Ортотропная композитная плита

Ортотропная композитная плита относится к области строительства мостов, эстакад, путепроводов и других сооружений для перехода или пропуска через препятствия людей и транспортных средств. Полезная модель может быть использована для перекрытий пролетов мостов и покрытий проезжей части на них, требующих восприятия различных нагрузок, и их передачи на несущие элементы сооружения. Ортотропная плита выполнена из полимерного композиционного материала, содержит жестко соединенные между собой верхний и нижний пояса, состоящие из оснований, в виде листов с зигзагообразным профилем, образованным треугольными трубами, с поперечным сечением в виде равностороннего треугольника уложенными плотно друг к другу и жестко присоединенными к основанию, причем верхний и нижний пояса соединены между собой таким образом, что вершины зигзага каждого из поясов опираются в основание другого пояса. Указанная конструкция и применение полимерных композитных материалов обеспечивают достаточную прочность при существенном снижении веса плиты и повышенную коррозионную стойкость. Ц 1 173490 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ 19 11 зе а ва < (13 ВУ’ 1734907 44 (51) МПК ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ ВОО 19/12 (2006.0Т) ВОР ТОО (2006.0Т) (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2017113594, 19.04.2017 (24) Дата начала отсчета срока действия патента: 19.04.2017 Дата регистрации: 29.08.2017 Приоритет(ы): (22) Дата подачи заявки: 19.04.2017 (45) Опубликовано: 29.08.2017 Бюл. № 25 Адрес для переписки: 190005, Санкт-Петербург, ул. 2-я Красноармейская, 4, ФГБОУ ВО "СПбГАСУ", Служба интеллектуальной собственности управления научно-технической работы (72) Автор(ы): Аверченко Глеб Александрович (КО), Квитко Александр Владимирович (КО) (73) Патентообладатель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный архитектурно-строительный университет" (КО) (56) Список документов, цитированных в отчете о поиске: КО ...

METHOD FOR BUILDING OVER AN OPENING VIA INCREMENTAL LAUNCHING

Methods and systems for building a stress ribbon structure over an opening via incremental launching, a construction fixture, a support structure, an anchorage panel, and a stress ribbon structure are disclosed. Construction fixtures are constructed adjacent to a support structure. The stress ribbon structure is constructed in a staging area and in sections that are suspended between the construction fixtures. Anchorage panels at each end of a section engage a blister on the construction fixtures and the support structure. Completed sections are launched from the construction fixtures onto and along the support structure. Sections are individually constructed and launched and adjacent sections abut along a lateral edge. Adjacent sections are aligned by adjusting tension in integral support cables and their ends pivot or rotate about the blisters via a bearing system with both rotational flexibility and low friction to support sliding in the direction of launching. 1. A construction fixture for constructing a stress ribbon structure via incremental launching comprising:a foundation system configured to support loads associated with a static stress ribbon section and forces that result from launching the stress ribbon section;a blister that is located on a top surface of the construction fixture and that is configured to engage a bearing surface of an anchorage panel of the stress ribbon section, wherein the blister extends across the top surface of the construction fixture parallel to a direction of launching; andone or more bearings installed on a surface of the blister aid sliding of the anchorage panel along the blister during launching,wherein the construction fixture is constructed adjacent to a support structure at a first side of an opening and opposite a second construction fixture constructed at a second side of the opening, the construction fixture supports a first end of the stress ribbon section during construction of the stress ribbon section, and the ...

Continuous CFRP Decked Bulb T Beam Bridges For Accelerated Bridge Construction

A pre-stressed concrete bridge using longitudinal load members of a single continuous beam including at least two types of concrete, one of which is ultra-high-performance concrete (UHPC) mix with a compressive strength exceeding 20 ksi and tensile strength exceeding 1.5 ksi in a region proximate to the support structure. 1. A bridge comprising:a longitudinal load member including a first and a second section being formed substantially out of UHPC and an intermediate section between said first and second section not being formed out of UHPC and wherein said longitudinal load members include a plurality of longitudinally extending internal tendons along predetermined paths and wherein said internal tendons include at least one tendon extending along a first predetermined path.2. The bridge of wherein said first predetermined path passes through said first intermediate section along a first travel path and through said first section along a second travel path claim 1 , and wherein said first and said second travel paths are angled relative to each other and are not parallel.3. The bridge of wherein said first predetermined path includes a third travel path through said second section and wherein said third travel path is angled relative to both of said first travel path and said second travel path.4. The bridge of wherein said first predetermined path includes a fourth travel path in said first and second section and wherein said fourth travel path is angled relative to said second and third travel paths.5. The bridge of wherein said fourth travel path is substantially parallel to said first travel path.6. The bridge of including a support structure having at least one abutment and wherein at least one of said first and second sections rests on said abutment.7. The bridge of wherein said support structure includes at least one pier claim 6 , and wherein at least one of said first and said second sections rests on said pier.8. The bridge of further including a support ...

Composite Bridge Deck and Bridge Construction

A bridge construction comprises a bridge support or abutment () and a bridge deck () supported thereon, comprising a composite panel () with a top plastic skin (), a bottom plastic skin () and a core () between and attached to the plastic skins. The bridge deck also comprises an edge beam () on at least one edge of the composite panel and resting on the bridge support. The edge beam () overlaps the core () of the composite panel () in the height direction, while the top plastic skin () has a protruding part () which protrudes relative to the core (). The protruding part () of the top plastic skin () extends over and is attached to the edge beam (). 1. A bridge deck comprisinga composite panel with a top plastic skin, a bottom plastic skin and a core between and attached to the plastic skins, andan edge beam on at least one edge of the composite panel,wherein the edge beam overlaps the core of the composite panel in the height direction,wherein the top plastic skin has a protruding part which protrudes relative to the core, andwherein the protruding part of the top plastic skin extends over and is attached to the edge beam.2. The bridge deck according to claim 1 , wherein the composite panel comprises a bulkhead that delimits the core and where applicable the plastic skins claim 1 , which bulkhead abuts the edge beam or a filling layer claim 1 , with which the edge beam is at least partially coated or covered.3. The bridge deck according to claim 2 , wherein the core and the bottom plastic skin butt up against the edge beam or against a filling layer with which the edge beam is at least partially coated or covered.4. The bridge deck according to claim 1 , wherein mutually aligned openings are present in the protruding part of the top plastic skin and the edge beam claim 1 , and wherein a peg or bolt extends through each pair of an opening in the top plastic skin and an opening in the edge beam which are mutually aligned.5. The bridge deck according to claim 4 , ...

DEPLOYABLE PLATFORMS

A platform panel is disclosed. The panel includes a core having a top surface and a bottom surface. The core has a composite skin disposed on the top surface and the bottom surface of the core. Further, recessed pockets having a fastener port. Moreover, the panel includes a first hinge member disposed on a first side of the core, and a second hinge member disposed on an opposing side of the core in relation to the first hinge member. 1. A platform panel comprising:a core having a top surface and a bottom surface;a composite skin disposed on the top surface and the bottom surface of the core;a recessed pocket disposed on the top surface of the core, wherein the recessed pocket comprises a fastener port;a first hinge member disposed on a first side of the core; anda second hinge member disposed on an opposing side of the core in relation to the first hinge member.2. The panel of claim 1 , wherein:the composite skin on the top surface of the core has a thickness greater than the composite skin on the bottom surface of the core.3. The panel of claim 1 , wherein:the composite skin on the top surface of the core has a non-uniform thickness.4. The panel of further comprising:a receiving port for attachment to an adjacent panel.5. The panel of further comprising:a rigid frame disposed around a periphery of the core.6. The panel of claim 5 , wherein:the rigid frame further comprises embedded hard points for mechanical attachments.7. The panel of further comprising:a positioner coupled to the bottom surface of the core.8. The panel of claim 1 , wherein:the first hinge member further comprises a spacer; andthe second hinge member does not have a spacer.9. The panel of claim 1 , wherein:the first hinge member further comprises a cut-out portion.10. The panel of claim 9 , wherein the second hinge member further comprises a cut-out portion.11. A panel comprising:a core having a top surface and a bottom surface;a composite skin disposed on the top surface and the bottom surface of ...

Floor Slab Structure for Bridge

The present disclosure relates to a floor slab structure for a bridge, the structure comprising: a girder-integrated floor slab having a girder member which is supported on a pier and supports a floor slab member, and which integrally protrudes from the lower surface of the floor slab member, multiple floor slab members being arranged to be connected in longitudinal and transverse directions; and a side barrier-integrated floor slab having a side bather member which integrally protrudes from the upper surface of one side of the floor slab member, multiple floor slab members being arranged to be connected in longitudinal and transverse directions. Accordingly, on-site work is minimized, the construction process for a bridge superstructure is simplified, the construction time period is shortened, the construction costs are significantly reduced, and the construction of skew bridges or curved bridges is simplified. 1. A floor slab structure for a bridge , comprisingfloor slab members being arranged to be connected to each other in longitudinal and transverse directions to form a floor slab for a bridge.2. The floor slab structure for a bridge as set forth in claim 1 , wherein the floor slab member includes a transverse shear key which protrudes from one of both end surfaces of the floor slab member in the longitudinal direction and a transverse shear key insertion hole in the remaining end surface.3. The floor slab structure for a bridge as set forth in claim 2 , wherein the transverse shear key hole is longer than the transverse shear key in a lengthwise direction of the floor slab member.4. The floor slab structure for a bridge as set forth in claim 1 , wherein side members are formed at both side ends of the floor slab member in a manner to extend along a lengthwise direction of the floor slab member and protrude from a lower surface of the floor slab member.5. The floor slab structure for a bridge as set forth in claim 1 , further comprising lateral connecting beam ...

Bridge Construction System and Method

The bridge construction system and method according to the present invention provides a lightweight, efficient, economical, long-lasting, and easily implemented composite steel structure that can be filled with concrete in place for the construction of pedestrian and smaller road bridges, specifically those found in rural areas. The bridge construction system of the present invention is unique in that it is a steel-frame reinforced composite bridge with decking and rebar caging that provides a permanent, non-removable form for poured-in-place concrete. The composite nature of the bridge allows for installation of the bridge to take place in one day, while the entire process from site preparation such as grading and excavation to cleanup takes a week or less. The quick installation of the bridge is designed to have a minimally invasive impact on the surrounding environment. 1. A bridge construction system comprising:a minimum of eight precast concrete setting blocks, wherein said blocks act as the foundation of the bridge;two steel abutment walls, wherein said abutment walls are hollow;four steel wing walls, wherein said wing walls are hollow;a plurality of lower steel beams;two steel scour edge beams;a plurality of lower rebar mats;two scour edge beam rebar cages;a plurality of upper steel tub girders;a plurality of upper decking panels;a plurality of upper rebar mats;means for connecting various components of said bridge construction system.2. The bridge construction system of claim 1 , wherein each of the two steel abutment walls are each connected together with two of the four steel wing walls so that two single walls exist prior to delivery to a jobsite.3. The bridge construction system of claim 1 , wherein the two steel abutment walls come in heights of 6 foot claim 1 , 8 foot claim 1 , or 10 foot.4. The bridge construction system of claim 1 , wherein said bridge construction system is designed to be capable of spanning a waterway from a width of 15 feet up to ...

STAY-IN-PLACE FORMS AND METHODS AND EQUIPMENT FOR INSTALLATION THEREOF

Stay-in-place forms and methods and equipment for installing thereof. A concrete form includes a vertical component and a horizontal component, the vertical component located substantially perpendicular to the horizontal component. Also, the form includes an interior surface, at least a portion of the interior surface providing a form for supporting uncured concrete; wherein the uncured concrete forms a concrete structural portion upon curing of the uncured concrete; and wherein the interior surface remains attached to the concrete structural portion after curing. The form may include inserts and compatible form attachments. Also, forms including recesses may be utilized to reduce the weight thereof. Lifting equipment and accessories may be utilized to lift the form from a form holder and set same in place. Forms contain the work area as soon as it is installed to minimize fall hazards and the time, costs, and downtime associated with installation of safety measures. 1. We claim a form for creation of a structure , the form for supporting uncured concrete prior to curing comprising: a substantially horizontal component having a substantially horizontal inwardly facing surface and a substantially horizontal outwardly facing surface, said substantially vertical component located substantially perpendicular to said substantially horizontal component and extending upwardly from said horizontal component, the substantially vertical component and the substantially horizontal component forming an L shape;', 'at least one insert in or through at least one of the group consisting of the substantially vertical inwardly facing surface, the substantially horizontal inwardly facing surface; and combinations thereof;', 'a rabbet extending longitudinally along the substantially horizontal component, the rabbet recessed in said substantially horizontal outwardly facing surface at the distal end thereof, the rabbet defined by top and side surfaces, the side surface being ...

Compositions, systems, and neural networks for bidirectional energy transfer, and thermally enhanced solar absorbers

The present invention provides a bidirectional energy-transfer system comprising: a thermally and/or electrically conductive concrete, disposed in a structural object; a location of energy supply or demand that is physically isolated from, but in thermodynamic and/or electromagnetic communication with, the thermally and/or electrically conductive concrete; and a means of transferring energy between the structural object and the location of energy supply or demand. The system can be a single node in a neural network. The thermally and/or electrically conductive concrete includes a conductive, shock-absorbing material, such as graphite. Preferred compositions are disclosed for the thermally and/or electrically conductive concrete. The bidirectional energy-transfer system may be present in a solar-energy collection system, a grade beam, an indoor radiant flooring system, a structural wall or ceiling, a bridge, a roadway, a driveway, a parking lot, a commercial aviation runway, a military runway, a grain silo, or pavers, for example.

Modular Orthotropic Steel Bridge Deck

A new modular orthotropic steel bridge deck, and its manufacturing method, which introduces the design standardization of the orthotropic steel bridge deck designs, thereby, leading to cost-effective solutions by avoiding the complexities and costly details that are unnecessary for orthotropic steel bridge deck and short span bridge applications. 1. A method of manufacturing a modular orthotropic steel bridge deck comprising:a. a concrete deck layer that may include rebar reinforcementb. a flat steel deck platec. a series of trapezoidal steel ribsd. a series of shear studs.2. The method according to claim 1 , further comprising:a. a series of modular orthotropic steel bridge deck panels to build a two traffic lane bridge with a width of 33 feet.3. The method according to claim 1 , wherein the modular orthotropic steel bridge deck has a maximum length of 110 feet.4. The method according to claim 1 , further comprising:a. a series of trapezoidal steel ribs having a pair of internal longitudinal equal bends with a bending radius in accordance with AASHTO standards.5. The method according to claim 1 , further comprising:a. a series of trapezoidal steel ribs manufactured using cold roll forming equipment and process.6. The method according to claim 1 , further comprising:a. a series of trapezoidal steel ribs manufactured using brake press cold forming equipment and process.7. The method according to claim 1 , further comprising:a. a series of trapezoidal steel ribs manufactured using hot roll forming equipment and process.8. The method according to claim 5 , further comprising:a. configuring a cold roll forming equipment having a plurality of stations to form a pair of internal longitudinal equal bendsb. passing unheated steel plate material through a subset of the plurality of cold roll forming stations to induce positive camber.9. The method according to claim 8 , wherein the positive camber is approximately ½ inch per 10 feet of length.10. The method according to ...

SYSTEM AND METHOD FOR MAKING A DECK OF A BRIDGE OR OTHER CONSTRUCTION

A bridge or other construction comprising a deck, in which the deck is designed to be lightweight and durable, such as by including aluminum, and readily installable on a main bearing structure of the bridge or other construction (e.g., without welding and/or without drilling or otherwise creating holes into the main bearing structure of the bridge or other construction), even if the main bearing structure of the bridge or other construction is based on different material (e.g., steel). 1. A system for making a deck of a bridge , the system comprising:a plurality of aluminum deck members; anda fastening assembly configured to fasten the aluminum deck members to a main bearing structure of the bridge such that the aluminum deck members are retained together weldlessly and the main bearing structure of the bridge is free of fastening holes to fasten the aluminum deck members to the main bearing structure of the bridge.2. The system of claim 1 , wherein the aluminum deck members are aluminum deck extrusions.3. The system of claim 1 , wherein the aluminum deck members and the main bearing structure of the bridge are free of fastening holes to fasten them to one another.4. The system of claim 1 , wherein each aluminum deck member comprises: a body comprising an upper surface of the aluminum deck member; and a connector integrally formed with the body of the aluminum deck member and configured to connect the aluminum deck member to the main bearing structure of the bridge.5. The system of claim 4 , wherein: the fastening assembly comprises a plurality of fasteners; and the connector of the aluminum deck member is configured to receive a given one of the fasteners to fasten the aluminum deck member to the main bearing structure of the bridge.6. The system of claim 5 , wherein the connector of the aluminum deck member comprises a fastener-receiving channel extending in a longitudinal direction of the aluminum deck member and configured to receive the given one of the ...

Structure deflection measurement apparatus

An apparatus includes: a deflection acquiring unit that acquires a deflection amount caused in a measurement target region on a structure by a vehicle traveling on the structure; a vehicle position acquiring unit that acquires a position of the vehicle on the structure at time when the deflection amount is acquired; and a rigidity coefficient calculating unit that calculates a rigidity coefficient specifying a relation between a magnitude of a force applied to the structure due to a weight of the vehicle and flexural rigidity of the structure, from a relation equation, the acquired deflection amount, and the detected position of the vehicle. The relation equation is established among a position of the vehicle on the structure, the magnitude of the force, a position of the measurement target region on the structure, a length of the structure, the flexural rigidity, and a deflection amount caused in the measurement target region.

Bridge decking and installation

A pre-fabricated deck panel includes a plurality of corrugations extending transversely along a length, and a pre-fabricated end dam on at least one end of the panel. The end dam extends to a height of the corrugations. The panel may further include at least one pre-fabricated side edge dam on at least one side of the panel. The side edge dam extends to height above the corrugations.

COMPOSITE STRUCTURAL PANEL AND METHOD OF FABRICATION

A structural panel and method of fabricating and manufacturing same comprises a top panel and a bottom panel separated by and attached to at least one, but preferably a plurality, of structural composite preforms which may be fabricated by a continuous manufacturing process and may be saturated by resin using a continuous wetting process. The composite preforms may take any cross sectional shape but are preferably trapezoidal. The top and bottom panels may be fabricated from a plurality of layers of woven fabric layers and non-woven fabric layers which are saturated with a resin that is subsequently cured using cure processes known in the art. The composite structural panel of the invention is usable as a flat structural member for use as bridge decking, ramps, trestles, and any application requiring a structural panel. 129-. (canceled)30. A structural composite assembly comprising: a top plate having an upper surface and an underneath surface, wherein the top plate is comprised of a plurality of fiber layers saturated with resin and subsequently cured; and', 'a first plurality of composite preforms attached to the underneath surface of the top plate, each composite preform comprising a foam core covered in a fabric, wherein the foam has expanded into interstitial spaces in the fabric, and wherein the fabric has been saturated with resin which has been subsequently cured; and, 'a top structural panel comprising a bottom plate having an upper surface and a lower surface, wherein the bottom plate is comprised of a plurality of fiber layers saturated with resin and subsequently cured; and', 'a second plurality of composite preforms attached to the upper surface of the bottom plate, each composite preform comprising a foam core covered in a fabric, wherein the foam has expanded into interstitial spaces in the fabric, and wherein the fabric has been saturated with resin which has been subsequently cured., 'a bottom structural panel comprising31. The structural composite ...

BOTTOM OF A COUPLING MODULE AS AN INTERFACE BETWEEN A PASSENGER BRIDGE OR STAIRS AND THE FUSELAGE OF AN AIRCRAFT

A bottom of a coupling module as an interface between a passenger bridge or stairs and the fuselage of an aircraft, the coupling module featuring an exit opening, the floor comprising a floor head part, the floor head part being horizontally slidable, under the control of at least one sensor arrangement, in the direction of the exit opening of the coupling module, while forming a front side distance between the floor head part and the aircraft fuselage. 1. A bottom of a coupling module as an interface between a passenger bridge or stairs and a fuselage of an aircraft , comprising:a drive device;a sensor arrangement; anda floor head part attached to a coupling module, the floor head part being horizontally slidable in a direction transverse to a longitudinal axis of an aircraft, the drive device sliding the floor head part toward a fuselage of the aircraft under the control of the sensor arrangement, the sensor arrangement determining a distance between the floor head part and the fuselage of the aircraft, the drive device and the sensor arrangement configured to maintain at least a front side distance between the floor head part and the fuselage of the aircraft.2. The bottom of a coupling module according to claim 1 , further comprising a stationary floor section having a rear end and a front end claim 1 , the rear end of the stationary floor section attached to the coupling module claim 1 , the front end of the stationary floor section disposed toward the fuselage of the aircraft claim 1 , the floor head part being attached to the coupling module through the stationary module such that the floor head part is displaceably disposed on the stationary floor section claim 1 , the floor head part being displaceable substantially parallel to the stationary floor section.3. The bottom of a coupling module according to claim 1 , wherein the floor head part comprises a plurality of floor segments claim 1 , the plurality of floor segments disposed along a direction of the ...

REINFORCEMENT STEEL

A reinforcement steel bar includes a shaft part and a head part formed by forging an end portion of the shaft part. A front end surface with its normal direction aligned with an axial direction of the shaft part is formed at a front end portion of the head part. A base end portion of the head part projects from the shaft part in a radial direction of the shaft part. A plate-shaped flange portion is formed at an outer peripheral part of the base end portion of the head part. 1. A reinforcement steel comprising:a shaft part; anda forged head part provided at an end portion of the shaft part, whereina front end surface with a normal direction aligned with an axial direction of the shaft part is formed at a front end portion of the head part,a base end portion of the head part projects from the shaft part in a radial direction of the shaft part,a plate-shaped flange portion is provided at an outer peripheral part of the base end portion of the head part, andgrid ribs are provided on an outer peripheral surface of the shaft part.2. The reinforcement steel according to claim 1 , whereinthe front end surface is located at a concentric position with the shaft part, andan outer edge portion of the front end surface is located outside, in a radial direction of the shaft part, of a corner portion between a base end surface of the base end portion and an outer peripheral surface of the shaft part.3. The reinforcement steel according to claim 2 , wherein the corner portion has a curved surface.4. The reinforcement steel according to claim 2 , wherein a recess is formed along the corner portion.5. The reinforcement steel according to claim 1 , wherein a flat surface is provided on the front end and base end portions of the head part claim 1 , and the flat surface is parallel to the axial direction of the shaft part.6. The reinforcement steel according to claim 5 , wherein a distance from a shaft center of the shaft part to the flat surface is in a range from 0.5 to 0.7 times as ...

REINFORCEMENT STEEL

A reinforcement steel bar includes a shaft part extending in a front-back direction, and a head part formed by forging an end portion of the shaft part. A width in a right-left direction of an upper end portion of the head part is formed wider than a diameter of the shaft part. The width in the right-left direction of a lower end portion of the head part is formed narrower than the diameter of the shaft part. An upper end surface extending parallel to an axial direction of the shaft part is formed at the upper end portion of the head part. A left side surface and a right side surface of the head part are inclined such that the width in the right-left direction of the head part is gradually reduced from the upper end portion to the lower end portion of the head part. 1. A reinforcement steel comprising:a shaft part extending in a front-back direction; anda forged head part provided at an end portion of the shaft part, whereina width in a right-left direction of an upper end portion of the head part is formed wider than a diameter of the shaft part,the width in the right-left direction of a lower end portion of the head part is formed narrower than the diameter of the shaft part,an end surface extending parallel to an axial direction of the shaft part is formed at the upper end portion of the head part, anda left side surface and a right side surface of the head part are inclined such that the width in the right-left direction of the head part is gradually reduced from the upper end portion to the lower end portion of the head part, andthe reinforcement steel is provided with grid ribs on an outer peripheral surface of the shaft part.2. The reinforcement steel according to claim 1 , wherein each of the left side surface and the right side surface is a flat surface.3. The reinforcement steel according claim 1 , wherein a plate-shaped flange portion is formed at an outer peripheral part of a base end portion of the head part.4. The reinforcement steel according claim 1 ...

CURVED PATHWAY

A curved pathway including a double helix form with no center support column includes a plurality of segments, wherein each of the segments is formed from a plurality of rods coupled to a plurality of connecting nodes. The plurality of rods are arranged in a skewed tetrahedral geometry, which causes the plurality of stair segments to form a helical structure when the plurality of segments are coupled together. The plurality of rods form a spine on an underside of the plurality of stair segments. A pathway surface is coupled to each of the segments. In alternate embodiments, the curved pathway may be formed from sheet metal creased to form a plurality of linear support locations and connecting nodes. 1. A self-supporting curved pathway comprising:a plurality of segments, wherein each of said segments comprises a plurality of rods coupled to a plurality of connecting nodes;wherein said plurality of rods are arranged in a skewed tetrahedral geometry, said skewed tetrahedral geometry causes said plurality of segments to form a curved structure when said plurality of segments are coupled together;wherein said plurality of rods form a spine on an underside of said plurality of stair segments; anda pathway surface coupled to each of said stair segments.2. The self-supporting curved pathway of claim 1 , each of said plurality of segments further comprising 18 rods and 5 connecting nodes.3. The self-supporting curved pathway of claim 1 , wherein each of said plurality of segments further comprises an inner cheek and an outer cheek; and wherein said inner cheek and said outer cheek are farther apart at a first portion of said curved pathway than at a middle portion of said curved pathway.4. The self-supporting curved pathway of claim 1 , wherein each of said plurality of segments further comprises an inner cheek and an outer cheek; and wherein said inner cheek and said outer cheek are farther apart at a second portion of said curved pathway than at a middle portion of said ...

CONCRETE DECK DEMOLITION SYSTEM AND METHOD

A concrete deck demolition method for demolishing a concrete deck. The demolition method includes cutting two access windows into the concrete deck, installing a guide rail along a structural beam, making two tilted cuts on an upper surface of the structural beam, supporting the weight of the concrete deck utilizing an arching effect created by the geometry of the tilted cuts and lifting away a concrete deck cut portion for further demolition process. 1. A concrete deck demolition method comprising the steps of:{'b': '2', 'a. cutting access windows into a concrete deck, the access windows are located on either side of a flange or any other upper surface of an I-beam or H-beam, a box beam, a concrete beam, a steel beam, or any type of structural beam;'}b. installing a guide rail along the beam;{'b': '2', 'c. making tilted cuts, one on each side of the flange or upper surface of the beam, going from top to bottom, the tilted cuts are tilted away from the center of the beam;'}d. wherein the concrete panel will still be supported due to the geometry of the angled cuts creating an arching effect to support the weight of the concrete panel without any additional temporary support.2. A double-bladed road-saw wherein the blades are tilted in the shape of an inverted “V” thereby allowing the road-saw to make simultaneous tilted cuts. This Application claims the benefit of U.S. Provisional Application 62/925,184 filed on Oct. 23, 2019.The present disclosure relates generally to concrete deck demolition systems, and more particularly to a system and method for demolishing concrete decks utilizing a double-bladed road-saw having tilted blades.Transportation infrastructure plays a vital role in improving quality of life and for the well-being of economy. Among various transportation infrastructures, bridges have a crucial role in connecting people and delivering goods. Bridges must be built strong enough to safely support their own weight as well as the weight of the people and ...

BRIDGE OVERHANG BRACKET ASSEMBLY

An improved bridge overhang bracket assembly may include top, diagonal and side members. A hanger element may be mounted to the top member and pivotally attached proximate to the top end of the side member. The hanger element may be translatable along the top member for adjusting its longitudinal position, to vary the positions of the diagonal and side members quickly and easily, without disassembly, and may enable folding of the members to a shipping/storage position. A second hanger element may be mounted to the top member for attaching the assembly to a tie rod. The diagonal member may include at least one connection tab for receiving a bolt to connect the top and diagonal members together in the shipping/storage position. Also disclosed is a fastener assembly for securing a side rail to a T-bolt channel. 1. A bridge overhang bracket assembly , comprising:a top member extending lengthwise between inner and outer ends;a diagonal member extending lengthwise between lower and upper ends, the top and diagonal members being pivotally attached proximate to the respective outer and upper ends thereof;a hanger element mounted to the top member and translatable along the top member for adjusting a longitudinal position of the hanger element relative to the top member; anda side member extending lengthwise between bottom and top ends, the diagonal and side members being pivotally attached proximate to the respective lower and bottom ends thereof, and the hanger element being pivotally attached proximate to the top end of the side member.2. The assembly of claim 1 , wherein the hanger element comprises a pivot pin pivotally mounted about a generally horizontal axis claim 1 , and the side member is attached to the pivot pin.3. The assembly of claim 2 , wherein the hanger element comprises a generally horizontal bore for receiving the pivot pin in sliding fit.4. The assembly of claim 3 , wherein the pivot pin comprises a generally vertical bore through which the side member ...

SHEAR CONNECTOR FOR CORRUGATED SHEET STEEL AND CONCRETE

A shear connector for corrugated sheet steel and concrete, comprises a flange plate welded at an upper end portion of the corrugated sheet steel, with more than one U-shaped steel channel welded in the longitudinal direction at an upper edge of the flange plate, the channel walls of each U-shaped steel channel being provided with two longitudinal sides, the left and right sides of the front and rear channel walls being respectively provided with corresponding holes or grooves, the left and right sides of the front and rear channel walls being respectively provided with corresponding holes or grooves, which penetrates and connects each of the steel channels; in the holes or grooves on the left and right sides of each U-shaped steel channel respectively, a vertically bent steel bar is provided, a bottom steel bar of each of the vertically bent steel bars penetrating the holes or grooves on the left or the right side in a longitudinal direction, both ends of the bottom steel bar being respectively bent upwards and extending to form a vertical steel bar. 1. A shear connector for corrugated sheet steel and concrete , comprises a flange plate welded at an upper end portion of the corrugated sheet steel , wherein , more than one U-shaped steel channels are welded in the longitudinal direction at an upper edge of the flange plate , the channel walls of each U-shaped steel channel being provided with two longitudinal sides , the left and right sides of the front and rear channel walls being respectively provided with corresponding holes or grooves , the left and right sides of the front and rear channel walls being respectively provided with corresponding holes or grooves , which penetrates and connects each of the steel channels; in the holes or grooves on the left and right sides of each U-shaped steel channel respectively , a vertically bent steel bar is provided , a bottom steel bar of each of the vertically bent steel bars penetrating the holes or grooves on the left or ...

CONCRETE STRUCTURE

A concrete structure includes a first concrete member, a second concrete member, a sheath that is disposed in a through hole extending from the first concrete member to the second concrete member, a tension part that is inserted over the entire length of the sheath and that is subjected to a tensile force, a fixing tool that fixes the tension part to the first concrete member or the second concrete member, and an anticorrosion part that covers the fixing tool. The tension part includes a stranded wire part and a first cover that covers an outer periphery of the stranded wire part. A space between the sheath and the tension part is not filled with a grout material. 1. A concrete structure in which a plurality of concrete members are disposed side by side and are connected to each other , the concrete structure comprising:a first concrete member that is disposed on one end portion of the concrete structure;a second concrete member that is disposed on another end portion of the concrete structure;a sheath that is disposed inside a through hole extending through the plurality of concrete members from the first concrete member to the second concrete member so that the sheath covers a wall surface surrounding the through hole;a tension part that is inserted into the sheath over an entire length of the sheath so that an end part region of the tension part is exposed from two ends of the sheath, and that is subjected to a tensile force in a longitudinal direction of the tension part;a fixing tool that fixes the end part region of the tension part that is exposed from the sheath to the first concrete member or the second concrete member; andan anticorrosion part that covers the fixing tool, a stranded wire part in which a plurality of steel wires are stranded, and', 'a first cover layer that covers an outer periphery of the stranded wire part, and, 'wherein the tension part includes'}wherein a space between the sheath and the tension part is not filled with a grout material. ...

PREFABRICATED, PRESTRESSED BRIDGE MODULE

A method for making a prefabricated, prestressed module includes arranging one or more steel beams atop a supporting formwork element in a direction transverse to the supporting formwork element and arranging one or more precast deck elements across the one or more steel beams to create a substantially continuous surface. The one or more precast deck elements have pockets for receiving connectors that protrude from the one or more steel beams. The method also includes arranging the supporting formwork element to allow the one or more steel beams to bend into a cambered shape to impart compressive stresses to a bottom flange of the one or more steel beams and tension stresses to a top flange of the one or more steel beams and inserting grout into the pockets to hold the cambered shape and to bond the one or more precast deck elements to the connectors and the top flange. 1. A method for making a prefabricated , prestressed module comprising the steps of:arranging one or more steel beams atop a supporting formwork element in a direction transverse to the supporting formwork element;arranging one or more precast deck elements across the one or more steel beams to create a substantially continuous surface wherein the one or more precast deck elements have pockets for receiving connectors that protrude from the one or more steel beams;arranging the supporting formwork element to allow the one or more steel beams to bend into a cambered shape to impart compressive stresses to a bottom flange of the one or more steel beams and tension stresses to a top flange of the one or more steel beams; andinserting grout into the pockets to hold the cambered shape and to bond the one or more precast deck elements to the connectors and the top flange.2. The method of claim 1 , further comprising:applying an overlay to the substantially continuous surface.3. The method of claim 1 , further comprising:placing shims atop top flanges of the one or more steel beams and between the one or ...

BRIDGE OVERHANG BRACKET ASSEMBLY WITH CONNECTION ELEMENT

A bridge overhang bracket assembly includes a top member having an upper surface. The top member and a diagonal member are pivotally attached proximate to respective distal and upper ends thereof. The diagonal member and a side member are pivotally attached proximate to respective lower and bottom ends thereof. A connection element is mounted to the top member and is pivotally attached to a top end of the side member. The connection element is translatable along the top member to adjust a longitudinal position of the connection element relative to the top member. The connection element does not extend above the upper surface of the top member. 1. A bridge overhang bracket assembly , comprising:a top member extending lengthwise between a proximal end and a distal end, the top member comprising an upper surface;a diagonal member extending lengthwise between a lower end and an upper end, the top member and the diagonal member being pivotally attached proximate to the respective distal and upper ends thereof;a side member extending lengthwise between a bottom end and a top end, the diagonal member and the side member being pivotally attached proximate to the respective lower and bottom ends thereof; anda connection element mounted to the top member and pivotally attached to the top end of the side member, the connection element translatable along the top member for adjusting a longitudinal position of the connection element relative to the top member between the proximal and distal ends thereof,wherein the connection element does not extend above the upper surface of the top member.2. The assembly of claim 1 , wherein the connection element is generally flush with the upper surface of the top member.3. The assembly of claim 2 , wherein the connection element does not extend below a lower surface of the top member.4. The assembly of claim 3 , wherein the connection element is generally flush with the lower surface of the top member.5. The assembly of claim 1 , wherein ...

ELONGATE PIPE-BASED TEMPORARY BRIDGE FOR SUPPORTING HEAVY LOADS

A temporary bridge for supporting heavy loads includes elongate hollow cylinders. A first rigid flat plate is horizontally disposed in overlying relation to each hollow cylinder and a second rigid flat plate is horizontally disposed in underlying relation to each hollow cylinder. Stress-distributing strengthening members formed by a pair of legs that are angularly disposed with respect to one another are circumferentially positioned about each hollow cylinder and the respective free ends of the legs are secured to their associated rigid flat plates. A key extends from a first end of each hollow cylinder and a mating socket is formed in a second end of each hollow cylinder to facilitate end-to-end interconnection of a plurality of hollow cylinders. Further embodiments include longitudinally-disposed timber mats, pedestrian walkways and curvature-creating members so that the bridge may follow a non-linear path of travel. 1. A temporary bridge , comprising:an elongate hollow cylinder having a longitudinal axis of symmetry;a first pair of stress-distributing strengthening members mounted to said hollow cylinder on opposite sides of a vertical plane that bisects said hollow cylinder;a second pair of stress-distributing strengthening members mounted to said hollow cylinder on opposite sides of a vertical plane that bisects said hollow cylinder;said first and second pairs of strengthening members disposed on opposite sides of a horizontal plane that bisects said hollow cylinder;each of said strengthening members being generally “L”-shaped and being formed by legs that are disposed in angular relation to one another;a first flat plate of rectangular configuration and rigid construction overlying said hollow cylinder;a second flat plate of rectangular configuration and rigid construction underlying said hollow cylinder;each of the legs of the upper pair of strengthening having a free end secured to an underside of said first flat plate;each of the legs of the lower pair of ...

Elongate pipe-based structure for supporting heavy loads

An elongate structure for supporting heavy loads includes an elongate hollow cylinder having a longitudinal axis of symmetry. Stress-distributing strengthening members are circumferentially positioned about and secured to the hollow cylinder in parallel relation to the longitudinal axis of symmetry. A first flat plate is disposed in overlying relation to the hollow cylinder and to the first, upper pair of strengthening members and a second flat plate is disposed in underlying relation to the hollow cylinder and to the second, lower pair of strengthening members. The second flat plate is disposed in a horizontal plane in parallel and diametrically opposed relation to the first flat plate. A key extends from a first end of the hollow cylinder and a mating socket is formed in a second end of the hollow cylinder to facilitate end-to-end interconnection of a plurality of the hollow cylinders.

A MODULE FOR A STRUCTURE

A construction module for a structure, comprising: a formwork member that includes a base, a pair of parallel side walls that extend upwardly from the base, and a pair of parallel end walls. The base, the side walls and the end walls define a cavity for reinforcement and concrete. A reinforcement member includes an upper portion and a lower portion. When the reinforcement member is located in the cavity and concrete fills the cavity, the lower portion of the reinforcement member and the concrete define an elongate beam. 142-. (canceled)43. A module for a structure , comprising:a formwork member that includes a base, a pair of side walls that extend upwardly from the base, and a pair of end walls, with the base, the side walls and the end walls defining a cavity for reinforcement and concrete, the cavity comprising an upper section and a lower section, with the lower section having a width that is less than that of the upper section; anda reinforcement member that includes an upper portion that is formed to extend across the width and along the length of the upper section of the cavity, and a lower portion that is formed to extend at least substantially along the length of the lower section of the cavity,wherein when the reinforcement member is located in the cavity and concrete fills the cavity, the lower portion of the reinforcement member and the concrete define an elongate beam.44. The module of claim 43 , wherein the lower section of the cavity comprises at least two spaced-apart elongate cavities claim 43 , and when the reinforcement member is located in the cavity claim 43 , the lower portion of the reinforcement member and the concrete define at least two elongate beams.45. The module of claim 44 , wherein the plurality of elongate beams span the length of the module claim 44 , each of the plurality of beams separated by land portions.46. The module of claim 43 , wherein the lower portion of the reinforcement member further includes an end portion claim 43 , ...

LEADING-EDGE STRUCTURE, PASSENGER BOARDING BRIDGE FLOOR STRUCTURE AND PASSENGER BOARDING BRIDGE

The present disclosure discloses a leading-edge structure of a passenger boarding bridge floor, a passenger boarding bridge floor structure and a passenger bridge. Wherein the leading-edge structure of the passenger boarding bridge floor includes a protruding assembly, a protruding guide structure and an energy storage assembly. Under action of the protruding guide structure and the energy storage assembly, the protruding assembly may be protruded or contracted relative to the passenger boarding bridge floor body. The protruding assembly may automatically adjust according to the position of the airplane, under the action of limiting and guiding of the protruding guide structure, the protruding assembly may be adaptively protruded or retracted relative to the passenger boarding bridge floor body, so as to improve the safety of the airplane. 1. A leading-edge structure mounted on a front end edge of a passenger boarding bridge floor , wherein the leading-edge structure of the passenger boarding bridge floor comprises:a protruding assembly configured to be protruded or retracted relative to a passenger boarding bridge floor body, wherein the leading-edge of the protruding assembly may directly contact one side of a cabin door of an airplane;a protruding guide structure between the protruding assembly and the passenger boarding bridge floor body configured to limit and guide protruding or retracting movement of the protruding assembly; andan energy storage assembly, configured to store energy while the protruding assembly retracts relative to the passenger boarding bridge floor body and release energy while the protruding assembly protrudes relative to the passenger boarding bridge floor body.2. The leading-edge structure of claim 1 , wherein the leading-edge structure further comprises a cab apron claim 1 , the cab apron further comprising a first end elastically hinged on the protruding assembly and a second end lapped on a passenger boarding bridge floor; wherein a ...

SELF ALIGNMENT STRUCTURE FOR APPLICATIONS JOINING EXTRUDED MEMBERS

A self alignment structure for applications joining extruded members is provided. The self-aligning structure may comprise one or more bridge decking members including an upper panel and a lower panel connected by webbing members therebetween. One side of the bridge decking member have a void space between the upper panel and lower panel and an other side the decking member may have a vertical webbing member between the upper panel and the lower panel. The self aligning structure may further include an upper shelf and lower shelf, each extending horizontally away from the vertical webbing member, operable to align a neighboring decking member, forming abutment joints in preparation for the application of a joining application, such as a friction stir welding tool. 1. a self-aligning structure for friction stir welding applications , comprisinga first bridge decking member having an upper and lower panel connected by webbing members therebetween,a second bridge decking member having an upper and lower panel connected by webbing therebetween,wherein the area of the upper panels extending away from the center of the first and second members comprise flanges with ends operable to form an abutment joints therebeween; andwherein the first bridge decking member further comprises an upper shelf extending horizontally beneath the abutment joint formed by the upper flanges;a lower shelf extending horizontally above the abutment joint formed by the lower flanges, andwherein the upper and lower shelf are connected by a vertical webbing member therebetween.2. The structure of claim 1 , wherein the second decking member has a void space between the upper and lower panels claim 1 , and wherein the void space is filled by the vertical webbing member and upper and lower shelves of the first decking member3. The structure of claim 2 , wherein the upper shelf of the first decking member has a horizontal face and wherein the horizontal face is in contact with the lower surface of the ...

CONCRETE STRUCTURE BODY AND MANUFACTURING METHOD THEREOF

A concrete structure body includes a first concrete member having a first facing surface; a second concrete member having a second facing surface and disposed such that the first facing surface and the second facing surface face each other; a connection portion that fills a gap between the first facing surface and the second facing surface; and a tendon disposed in the connection portion to extend along the first facing surface and the second facing surface and to which a tensile force is applied in a longitudinal direction. 1. A concrete structure body comprising:a first concrete member having a first facing surface;a second concrete member having a second facing surface and disposed such that the first facing surface and the second facing surface face each other;a connection portion that fills a gap between the first facing surface and the second facing surface; anda tendon disposed in the connection portion to extend along the first facing surface and the second facing surface and to which a tensile force is applied in a longitudinal direction.2. The concrete structure body according to claim 1 , wherein the tendon compresses the connection portion with an adhesion force with respect to the connection portion.3. The concrete structure body according to claim 1 , wherein the tendon includes a twisted wire portion having a structure constituted by a plurality of steel wires that are twisted together claim 1 , the twisted wire portion extending in the connection portion along the first facing surface and the second facing surface.4. The concrete structure body according to claim 1 , wherein the tendon includes a cover layer that covers an outer circumference of the tendon.5. The concrete structure body according to claim 1 , comprising a plurality of the tendons.6. The concrete structure body according to claim 1 , wherein the connection portion is made of concrete or mortar.7. A method of manufacturing a concrete structure body claim 1 , comprising:a step of ...

Boardwalk and Sidewalk System With Dual Use As Flood Control Barrier

A walkway including: a foundation base at least partially embedded in ground adjacent to a body of water; first and second supports, at least the first support being connected to the foundation base; a plank having a surface for use by pedestrians to travel along a shoreline, the plank having a first end rotatably connected to the first support and having a second end supported on the second support, the surface being exposed for use by the pedestrians when the plank is in a first position where the second end is supported by the second support, the plank having a length between the first and second supports; and a lifting mechanism operatively connected to the plank to rotate the plank from the first position to a second position where the length of the plank is oriented in a first direction to impede a rising height of the body of water. 1. A walkway for use along a shoreline of a body of water , the walkway comprising:a foundation base at least partially embedded in ground adjacent to the body of water;first and second supports, at least the first support being connected to the foundation base;a plank having a surface for use by pedestrians to travel along the shoreline, the plank having a first end rotatably connected to the first support and having a second end supported on the second support, the surface being exposed for use by the pedestrians when the plank is in a first position where the second end is supported by the second support, the plank having a length between the first and second supports; anda lifting mechanism operatively connected to the plank to rotate the plank from the first position to a second position where the length of the plank is oriented in a first direction to impede a rising height of the body of water.2. The walkway of claim 1 , wherein each of the first and second supports are connected to the foundation base.3. The walkway of claim 1 , wherein the plank comprises a plurality of planks arranged in series in a second direction ...

RAILWAY FASTENER FOR USE WITH CROSSTIES

A fastening system configured to attach railroad crossties to one or more support structures such as the girder of a bridge. The fastening system includes a plate mounted on a crosstie and a clip attached to the plate that is configured to provide a force between the support structure and the crosstie and secure the crosstie in place 1. A railway fastening system for fastening railway crossties to at least one support structure , comprising:a plate that is configured to be mounted to a side of the crosstie in a vertical plane with respect to the side of the crosstie and perpendicular to a rail above the crosstie; anda resilient clip slidably attached to the plate and including a linearly extending section, a curve section extending contiguously from the straight section and a contoured tip extending contiguously from the curved section,wherein the contoured tip is configured to contact a surface of the support structure and secure the crosstie to the support structure, andwherein the clip can be advanced along the plate and along an underside of the support structure, as desired to secure the crosstie to the support structure.2. A fastening system securing a railroad crosstie to a support structure , the railroad crosstie having a top surface supporting a rail and a side surface , the support structure having a flange with an upper surface with a bottom surface , the fastening system comprising:a plate having at least one flange extending therefrom; anda clip having a first segment extending horizontally through an opening in the flange and a second curved segment and a contoured end segment with the contoured end engaging the bottom surface when the crosstie is installed on the upper surface and the clip generating a friction force between said crosstie and the support structure.3. The fastening system of claim 2 , wherein the first segment has a surface that interacts with and forms an intererence fit with the opening in the flange.4. The fastening system of claim ...

STRUCTURE AND METHOD OF PAVEMENT ON STEEL DECK BRIDGE

A pavement structure and method of steel bridge deck. The pavement method for steel bridge deck comprises: laying consecutively a 0.6 mm-0.8 mm epoxy waterproofing bond material layer, a 30 mm-40 mm injectable self-flowing asphalt concrete material layer, a 0.4 mm-0.6 mm epoxy asphalt bond material layer, and a 25 mm-40 mm latex cement mortar poured asphalt concrete material layer onto the top of the steel bridge deck to form the steel bridge deck pavement structure. The present invention has improved the overall deformation coordination ability and anti-fatigue performance of the pavement layer, and has obtained a comprehensive balance among the crack resistance at low temperatures, the stability performance at high temperatures, and the durability of the structure, and it is a scheme with high performance pavement structure. 1125364. A steel bridge deck pavement structure , characterized in that the structure comprises a steel bridge deck () , an anti-corrosion primer () , an epoxy resin waterproof bond material layer () , an injectable self-flowing asphalt concrete material layer () , an epoxy asphalt bond material layer () , and a latex cement mortar poured asphalt concrete material layer () arranged consecutively from bottom to top.2. A pavement method for the steel bridge deck pavement structure according to claim 1 , characterized in that the method comprises:laying consecutively a 0.6 mm-0.8 mm epoxy waterproofing bond material layer, a 30 mm-40 mm injectable self-flowing asphalt concrete material layer, a 0.4 mm-0.6 mm epoxy asphalt bond material layer, and a 25 mm-40 mm latex cement mortar poured asphalt concrete material layer onto the top of the steel bridge deck to form the steel bridge deck pavement structure; wherein,the epoxy resin waterproof bond material layer is formed by mixing an epoxy resin of 1,6-hexanediol diglycidyl ether with a curing agent containing 2-acrylic acid and 1,3-butadiene polymer, in a weight mixing ratio of 50:50;the injectable ...

ORTHOTROPIC DECK

A method of manufacturing an orthotropic deck panel includes cambering a deck plate of the orthotropic deck panel to a first degree of camber in a longitudinal direction, cambering the deck plate to a second degree of camber in a transverse direction, and attaching a rib member of the orthotropic deck panel to the deck plate by welding the rib member to the deck plate. The first degree of camber corresponds to a shape of a surface of which the orthotropic deck panel is a part, and the second degree of camber is configured such that the deck plate is flatter in the transverse direction after the rib member is welded to the deck plate than when the deck plate is being cambered in the transverse direction. 1. A method of manufacturing an orthotropic deck panel , comprising:cambering a deck plate of the orthotropic deck panel to a first degree of camber in a longitudinal direction;cambering the deck plate to a second degree of camber in a transverse direction, wherein the transverse direction is orthogonal to the longitudinal direction; andattaching a rib member of the orthotropic deck panel to the deck plate by welding the rib member to the deck plate,wherein the first degree of camber in the longitudinal direction corresponds to a shape of a surface of which the orthotropic deck panel is a part, andwherein the second degree of camber in the transverse direction is configured such that the deck plate is flatter in the transverse direction after the rib member is welded to the deck plate than when the deck plate is being cambered in the transverse direction.2. The method of claim 1 , wherein the act of cambering the deck plate in the longitudinal direction and the act of cambering the deck plate in the transverse direction include securing the deck plate to a cambering fixture.3. The method of claim 1 , wherein prior to attaching the rib member to the deck plate claim 1 , the method further comprises securing the rib member against the deck plate with a plurality of ...

OVERHEAD GUIDED-TRANSPORT TRACK SPAN, AND VIADUCT FORMED BY SUCH SPANS

The invention relates to an overhead guided-transport track span having a U-shaped cross section, the two arms of which form lateral walls () of said track, and the central region of which, connecting the two arms, forms a load-bearing slab () of said track, characterised in that said load-bearing slab () comprises at least one groove () that is provided in said slab longitudinally along said span and is designed to be able to receive a running support () of a guided-transport vehicle intended to travel on said track. 1. An overhead guided-transport track span having a U-shaped cross section , two arms forming lateral walls of said span , and a central region , connecting the two arms , and forming a load-bearing slab of at least one track , said load-bearing slab comprising at least one groove that is provided in said slab longitudinally along said span and is adapted to receive a running support of a guided-transport vehicle intended to travel on said span , and in that said span comprises one longitudinal rib for each groove , which rib extends under said load-bearing slab opposite to said groove and forms longitudinal stiffening means of said load-bearing slab.2. The span according to claim 1 , wherein each groove has dimensions that are matched to and conjugate with the dimensions of the running support that is intended to be accommodated in said groove such that claim 1 , once arranged in said groove claim 1 , said running support does not extend beyond an upper surface of said load-bearing slab.3. The span according to wherein each longitudinal rib is formed by two longitudinal beams that are arranged on either side of said groove.4. The span according to claim 1 , wherein said stiffening means further comprises a trapezoidal caisson provided under the load-bearing slab.5. The span according to claim 1 , wherein the span comprises at least two parallel grooves that are provided longitudinally along said span so as to be able to each receive one running ...

Slab bridge structure

A slab bridge structure having improved rigid connection strength between bridge girders and concrete piers. The slab bridge structure has a rigid connection structure in which slab concrete ( 3 ) is poured between side surfaces of bridge girders ( 1 ) arranged in line in a bridge width direction, throughout a longitudinal direction of the bridge girders, connection concrete ( 12 ) in which bridge girder portions ( 1 ′) supported by a bridge seat ( 2 a ) of a concrete pier ( 2 ) that supports the bridge girders are embedded is further added onto the bridge seat, and the slab concrete and the concrete pier are concrete-joined through the connection concrete, the slab bridge structure further includes: a connecting rod ( 13 ) embedded in the concrete pier and projecting upward from the bridge seat of the pier; and a connecting plate ( 14 ) connecting upper end portions of the adjacent bridge girder portions.

MODULAR BRIDGE DECK SYSTEM CONSISTING OF HOLLOW EXTRUDED ALUMINUM ELEMENTS

A modular bridge deck system supported on a plurality of cooperating girders and the deck system that comprises a plurality of deck panels secured together to form a modular bridge deck. Each deck panel is preferably formed by longitudinally shop friction-stir welding a plurality of elongated, multi-void, extruded aluminum structural elements. A top surface of each respective deck panel and the longitudinal shop-welding form a substantially continuous top surface of the modular bridge deck. In addition, the modular bridge deck has a depth and weight that is substantially equal to a weight of a steel open-grid deck of a moveable bridge or fixed span bridge to be replaced by the modular bridge deck system. 1. A modular bridge deck system supported on a plurality of cooperating girders , comprising:a plurality of deck panels secured together to form a modular bridge deck wherein each deck panel being formed by longitudinally shop friction-stir welding a plurality of elongated, multi-void, extruded aluminum structural elements, and a top surface of the respective deck panels and the longitudinal shop-welding form a substantially continuous top surface of the modular bridge deck; and,wherein the modular bridge deck has a depth and weight that is substantially equal that of a steel open-grid deck of a moveable bridge or fixed span bridge to be replaced by the modular bridge deck system.2. The modular bridge deck system of claim 1 , further comprising a plurality of stringer beams shop or field mounted to a bottom surface of the plurality of deck panels with the stringer beams parallel to one another and that extend in a direction parallel to a direction of traffic over the bridge deck.3. The modular bridge deck system of claim 2 , wherein the stringer beams are affixed to a bridge superstructure.4. The modular bridge deck system of claim 1 , further comprising a wearing layer applied to the top surface of the modular bridge deck.5. The modular bridge deck system of claim ...

FOUNDATION SYSTEM FOR BRIDGES AND OTHER STRUCTURES

A bridge system is provided that utilizes foundation structures that are formed of the combination of precast and cast-in-place concrete. A method of constructing the combination precast and cast-in-place concrete foundation structures involves receiving at a construction site a precast concrete foundation unit having elongated upright wall members that define a channel therebetween, and multiple upright supports located within the channel; placing the precast concrete foundation unit at a desired use location; delivering concrete into the channel while the precast concrete foundation unit remains at the desired use location; and allowing the concrete to cure-in-place such that the elongated upright wall members are connected to the cured-in-place concrete by reinforcement embedded within both the cured-in-place concrete and the upright wall members. The bridge units may be placed before the pouring step to embed the bottoms of the bridge units in the cast-in-place concrete. 1. A method of constructing a foundation structure , comprising:utilizing a foundation unit having a first elongated upright wall member and a second elongated upright wall member spaced apart from the first elongated upright wall member to define a channel therebetween, and at least first and second upright supports extending laterally across the channel and interconnecting the first elongated upright wall member and the second elongated upright wall member, the first and second upright supports spaced apart from each other in a lengthwise direction parallel to a lengthwise axis of the foundation unit to form a channel cell, wherein an inner side of the first elongated upright wall member includes a first recess facing the channel cell and extending only partially through a lateral thickness of the first elongated upright wall member, and an inner side of the second elongated upright wall member includes a second recess facing the channel cell and extending only partially through a lateral ...

Over decking systems and methods

In one embodiment, a decking system provides a surface upon which traffic may travel. Drivable decking surfaces can support heavy vehicles, such as tanks. Exemplary decking systems include a first module, a second module, a first upper fastening assembly, a first lower fastening assembly, a second upper fastening assembly, and a second lower fastening assembly. These fastening assemblies can secure the first module and the second module together. Decking systems may also include side ramp assemblies and/or end ramp assemblies, and such ramp assemblies can be coupled with a decking platform. Fastening assemblies may include a pin, a first clip, and a second clip.

MODULAR PANELED STRUCTURE HAVING CONNECTIVE MEANS TO PREVENT GAP OPENING AND DISCONNECTION

A modular paneled structure, comprising a main panel with a symmetric profile which has a closed-sectional portion in the middle and open-sectional portions at each end; and further comprising a cover panel which interconnects two side-by-side main panels, where the cover panel closes the open-sectional portions of the two side-by-side main panels forming a closed-sectional shape together with main panels; and further comprising a tensioning member which interconnects and pre-tensions the main panels that are placed side by side; and consequently, forms an assembled paneled structure with all these connective means, which is used to construct a paneled ground structures. 1. A modular paneled structure having connective means to prevent gap opening and disconnection , comprising each of the following:a main panel with a symmetric profile which has a closed-sectional portion in the middle and open-sectional portions at each end,wherein the closed-sectional portion comprises an upper plate, a lower plate, and inner webs, connecting the upper and lower plates to form a plurality of divisional cells of polygonal tubular cross-sectional shapes between the upper and lower plates,wherein the open-sectional portion comprises an extended lower plate, an upward outer web at the end of the extended lower plate, and an outermost inner web which is shared in common with the closed-sectional portion;a cover panel with a symmetric profile of an open-sectional portion which interconnects two side-by-side main panels, where the cover panel closes the open-sectional portions of the two side-by-side main panels,wherein the cover panel comprises an upper plate, two downward outer projected portions which each project from the upper plate at each end, and two downward inner projected portions in the mid-section of the cover panel in-between the outer projected portions which project from the mid-section of the upper plate; anda tensioning member which interconnects and pre-tensions the ...

Deck system

A deck system is disclosed having a mounting plate with a planar support surface and at least one locating rod extending from the support surface. The locating rod extends in a direction that is substantially perpendicular to the support surface. A beam having a first end and a second end is positioned on the support surface of the mounting plate. The first and second ends of the beam have a slot and the slot is disposed for receiving the locating rod. At least one tread is disposed to extend between the two spaced apart parallel oriented beams. The tread has opposed shoulders on the side of the tread that engages the spaced apart beams. The opposed shoulders are disposed for engaging a side of the spaced apart beams that are in adjacent relationship.

METHOD FOR LAUNCHING/CONSTRUCTING BRIDGE USING ASSEMBLY OF PRECAST BOTTOM PLATE AND CONCRETE-FILLED STEEL TUBE TRUSS GIRDER

The present invention relates to a method for launching/constructing a bridge using assembly of a precast bottom plate and a concrete-filled steel tube truss girder, wherein a CFT truss girder and a precast bottom plate are provisionally assembled, thereby forming a segment, and then a plurality of segments are successively launched, thereby constructing a bridge. 1. A launching method of a bridge , which constructs a bridge to have a superstructure composed of a concrete filled steel tube (CFT) truss girder and a precast concrete slab , the launching method comprising:placing a precast concrete slab on a CFT truss girder at a casting bed to fabricate a segment including the CFT truss girder and the precast concrete slab in a temporarily assembled state, successively disposing segments to connect CFT truss girders integrally with each other, and launching the segments in order in a front direction to form a superstructure of a bridge; andintegrally composing the CFT truss girders and the precast concrete slabs after the segments are completely launched.2. The launching method of a bridge according to claim 1 ,wherein a plurality of precast concrete slabs is successively disposed in a longitudinal direction at a single segment, andafter the segments are completely launched, when the CFT truss girders and the precast concrete slabs are integrally composed, a prestressing force is applied to the plurality of precast concrete slabs in a longitudinal direction so that the precast concrete slabs are integrated with each other.3. The launching method of a bridge according to claim 1 ,wherein the CFT truss girder includes an upper beam, a lower beam, and a web beam connecting the upper and lower beams,wherein a support member is provided at an upper surface of the upper beam to support the precast concrete slab, a shear pocket formed with a through hole is formed in the precast concrete slab at a location placed on the upper beam of the CFT truss girder, and a stud inserted ...

COMPOSITE STRUCTURAL PANEL AND METHOD OF FABRICATION

A structural panel and method of fabricating and manufacturing same comprises a top panel and a bottom panel separated by and attached to at least one, but preferably a plurality, of structural composite preforms which may be fabricated by a continuous manufacturing process and may be saturated by resin using a continuous wetting process. The composite preforms may take any cross sectional shape but are preferably trapezoidal. The top and bottom panels may be fabricated from a plurality of layers of woven fabric layers and non-woven fabric layers which are saturated with a resin that is subsequently cured using cure processes known in the art. The composite structural panel of the invention is usable as a flat structural member for use as bridge decking, ramps, trestles, and any application requiring a structural panel. 1. A structural composite panel , comprising:a top plate defined as a planer structure and having an upper surface and an underneath surface, wherein said top plate is comprised of a plurality of fiber layers saturated with resin and subsequently cured;a bottom plate defined as a planer structure and having an upper surface and a lower surface wherein said bottom plate is comprised of a plurality of fiber layers saturated with resin and subsequently cured;a first set of at least one composite preforms having a foam core and covered in a fabric saturated with resin and subsequently cured;a second set of at least one composite preforms having a foam core and covered in a fabric saturated with resin and subsequently cured;wherein said first set of composite preforms are attached to said underneath surface of said top plate; andwherein said second set of composite preforms are attached to said upper surface of said bottom plate; andwherein said first set of composite preforms and said second set of composite preforms are attached together forming a structural composite panel.2. The structural composite panel of claim 1 , wherein said first and said ...

Device for attachment to a bridge support bracket

A device for attachment to a bridge support bracket is adapted to be connected to an end of a support bracket horizontal component and to an end of a support bracket vertical component. The device comprises a support adapted to be attached to the end of the horizontal component, a sliding tube adapted to be attached to the end of the vertical component, and a mounting tube attached to the support for mounting the sliding for sliding movement relative to the support. A slot is in the side of the mounting tube, and a nub is attached to the sliding tube and extends through the slot. The nub has a threaded opening therein, and a threaded rod extends through and engages the threaded opening, the threaded rod being mounted for rotation but not vertical movement relative to the support, for moving the vertical piece vertically relative to the support.

ADJUSTABLE FORMS FOR POURED CONCRETE STRUCTURES AND RELATED SYSTEMS AND METHODS

An apparatus for adjusting a haunch height and related systems and methods are described. The apparatus may include a support angle. The support angle may include first and second flanges, a surface of the first flange including a hole. The apparatus also may include a coil rod and a rotatable nut. 1. An apparatus for adjusting a haunch height , the apparatus comprising:a support angle, the support angle comprising a first flange and a second flange, wherein a surface of the first flange includes a hole;a coil rod at least partially extending through the hole; anda rotatable nut at least partially surrounding the coil rod, wherein motion of the rotatable nut adjusts a position of the support angle.2. The apparatus of claim 1 , wherein the coil rod is threaded.3. The apparatus claim 2 , wherein the threaded coil rod is seated within a threaded coupler.4. The apparatus of claim 3 , wherein the threaded coupler is embedded in a flange of a bridge girder.5. The apparatus of claim 4 , wherein the coil rod is a first coil rod claim 4 , wherein the apparatus further includes a bearing plate and a second coil rod claim 4 , wherein the bearing plate is coupled to the first coil rod and to the second coil rod claim 4 , and wherein the second coil rod extends parallel to the flange.6. The apparatus of claim 5 , wherein the rotatable nut is welded to the bearing plate.7. The apparatus of claim 1 , further including a coil rod splicer supporting at least a portion of the support angle.8. The apparatus of claim 1 , further including an additional nut coupled to the coil rod and supporting at least a portion of the support angle.9. The apparatus of claim 8 , further including a washer or plate welded to the additional nut and supporting at least a portion of the support angle.10. The apparatus of claim 1 , wherein the apparatus is a stay-in-place form system configured to receive a concrete pour to form a bridge deck.11. An apparatus for adjusting a haunch height claim 1 , the ...

REINFORCEMENT STEEL

A reinforcement steel bar includes a shaft part and a head part formed by forging an end portion of the shaft part. The head part is provided with a projection projecting from the shaft part in a radial direction of the shaft part, and a flat surface extending parallel to an axial direction of the shaft part. A distance from a shaft center of the shaft part to the flat surface is in a range from 100% to 115% of a maximum radius of the shaft part. 1. Reinforcement steel comprising:a shaft part; anda forged head part provided at an end portion of the shaft part, wherein a projection projecting from the shaft part in a radial direction of the shaft part, and', 'a flat surface extending parallel to an axial direction of the shaft part, and, 'the head part is provided with'} 'wherein a rib is formed on an outer peripheral surface of the shaft part.', 'a distance from a shaft center of the shaft part to the flat surface is in a range from 100% to 115% of a maximum radius of the shaft part,'}2. (canceled)3. The reinforcement steel according to claim 1 , wherein the head part is provided with a recess formed along a corner portion between the projection and an outer peripheral surface of the shaft part.4. (canceled) The present invention relates to reinforcement steel.A coupling structure for coupling decks laid on a bridge superstructure is configured such that a reinforcement steel bar of one of the decks and a reinforcement steel bar of the other deck are caused to project to a space between the decks, and concrete is placed in the space.There is an example of reinforcement steel used in a ferroconcrete structure such as the aforementioned deck coupling structure, in which a diameter of a head part of the reinforcement steel is expanded more than a diameter of a shaft part thereof (see Japanese Patent Application Publication No. 2005-139650, for example).A ferroconcrete structure is subject to the regulation of a covering depth of concrete from reinforcement steel to an ...

SYSTEM FOR CONSTRUCTION OF COMPOSITE U SHAPED REINFORCED GIRDERS BRIDGE DECK AND METHODS THEREOF

A system of construction of composite U shaped Reinforced Concrete and Steel girders bridge deck and methods thereof are disclosed. The system consists of a plurality of steel main girders with unsymmetrical top flange plurality of cross girders being connected above bottom flange of main girders and U shaped RCC girder comprising of concrete flange above main girder, web and deck slab above cross girder. Inspection path/crash barrier provided for Rail/Road. System is adoptable upto 3 Tracks/four lane Road. In Cast in situ construction, main girders are placed over supports. Cross girders are connected and concreted. In precast construction, main girder with top slab is precast and placed over supports. Two or more cross girders with precast slab are connected to web of main girder. Concrete web portion is cast in situ. 1. A system of construction of composite U shaped reinforced concrete and steel girders bridge deck , the system comprises:a plurality of main girders including an unsymmetrical top flange, a symmetrical bottom flange and a web;a plurality of cross girders including end cross girders and intermediate cross girders, being connected to said main girders, wherein said cross girders are bent near support in such a way to match said bottom flange of said main girder;at least one U shaped RCC girder provided with a top flange, a web and a deck slab, wherein, said deck slab and said web are constructed over said unsymmetrical top flange of main girder and whereas said concrete deck slab, said web and concrete flange over said top flange of main girder forms U shape;at least one crash barrier, wherein foot path of 1.5 m or service path of 0.45 m is provided between said crash barrier and said web of U shaped RCC girder.wherein, said top flange of said main girder is unsymmetrical to thereby take said top flange of U shaped RCC girder over said top flange of said main girder;wherein, said top flange of said U shaped RCC girder is projected inside a concrete ...

BRIDGE TIE FASTENER SYSTEM

Methods, system and apparatus are disclosed, including a tie fastener apparatus for attaching railroad ties to a superstructure. The apparatus comprises a threaded hook bolt, including a hook to engage the underside of a flange of a beam. The apparatus further comprises a cross strap configured to engage with a flange of the beam. The apparatus further comprises a metal member for engaging plural ties. The metal member includes a tie fastener hole at plural locations. A nut fastens a threaded end of the threaded hook bolt for installation when the threaded hook bolt is passed through the bolt hole. When the threaded hook bolt is installed, the hook engages the superstructure, and a neck of the threaded hook bolt engages the cross strap. The apparatus is installed from above the superstructure without drilling holes in ties or the superstructure, or requiring manned installation from below the superstructure. 1. A tie fastener apparatus for attaching railroad ties to a superstructure , the tie fastener apparatus comprising:a threaded hook bolt, including a hook on one end of the threaded hook bolt, the hook including a hook end configured to engage the underside of a flange of a beam of the superstructure;a cross strap that includes a cross strap hook end and a cross strap slot end, the cross strap hook end including a hook configured to engage a top flange of a beam of the superstructure, the cross strap slot end including one or more L-shaped slots for engaging the threaded hook bolt;a metal member for engaging two or more ties, the metal member including a tie fastener hole at one or more locations; anda nut configured to be fastened to a threaded end of the threaded hook bolt for installation when the threaded hook bolt is passed through the bolt hole and optionally through a washer; a neck of the hook engages the slot of the cross strap; and', 'the hook engages the superstructure and an L-shaped slot in the cross strap, tightening the cross strap to the ...

Pultruded GFRP Reinforcing Bars, Dowels and Profiles with Carbon Nanotubes

A glass fiber reinforced polymer reinforcing structure comprised of glass fibers mixed with one or more polymers. Incorporated in the polymer are a hybrid mix of pristine multi-walled carbon nanotubes at 0.0-4.0 wt. % of the polymer and multi-walled carbon nanotubes functionalized with carboxylic group at 0.0-2.0 wt. % of the polymer. The above mixture is pultruded to produce GFRP reinforcing bars, dowels or structural profiles. 1. A broom resistant glass fiber reinforced polymer reinforcing structure comprising:an elongated structure;said structure comprised of glass fibers mixed with one or more polymers;a plurality of pristine multi-walled carbon nanotubes at 0.0-4.0 wt. % of said polymer are incorporated in said polymer; andmulti-walled carbon nanotubes functionalized with carboxylic group at 0.0-2.0 wt. % of said polymer are incorporated in said polymer.2. The broom resistant glass fiber reinforced polymer reinforcing structure of wherein said polymer is an ester (vinyl ester claim 1 , poly ester or other ester type of polymers).3. The broom resistant glass fiber reinforced polymer reinforcing structure of wherein said elongated structure is made by pultrusion.4. The broom resistant glass fiber reinforced polymer reinforcing structure of wherein said elongated structure is a reinforcing bar.5. The broom resistant glass fiber reinforced polymer reinforcing structure of wherein said elongated structure is a reinforcing dowel claim 3 , plates claim 3 , angles claim 3 , and I-beams.6. A broom resistant GFRP reinforcing bar for concrete structures comprising: glass fibers mixed with one or more polymers; a plurality of/hybrid mix of pristine multi-walled carbon nanotubes at 0.0-4.0 wt. % of said polymer are incorporated in said polymer; and multi-walled carbon nanotubes functionalized with carboxylic group at 0.0-2.0 wt. % of said polymer are incorporated in said polymer.7. The broom resistant GFRP reinforcing bar of wherein said polymer is vinyl ester claim 6 , ...

ORTHOTROPIC DECK

A method of manufacturing an orthotropic deck panel includes securing a rib member in a first fixture, beveling an edge surface of the rib member while the rib member is secured in the first fixture, and releasing the rib member from the first fixture, attaching the rib member to a deck plate, and attaching a floor beam to the rib member and the deck plate. 1. A method of manufacturing an orthotropic deck panel , comprising:securing a rib member in a first fixture;beveling an edge surface of the rib member while the rib member is secured in the first fixture;releasing the rib member from the first fixture;attaching the rib member to a deck plate; andattaching a floor beam to the rib member and the deck plate.2. The method of claim 1 , further comprising cambering the deck plate in a first direction and in a second direction using a second fixture prior to the act of attaching the rib member to the deck claim 1 , wherein the second direction is transverse to the first direction.3. The method of claim 1 , further comprising securing the rib member against the deck plate with a plurality of third fixtures prior to the act of attaching the rib member to the deck claim 1 , wherein the third fixtures are spaced relative to each other.4. The method of claim 1 , further comprising:creating a profile of the rib member and deck plate at a location; andcutting the floor beam to match the profile at the location,wherein the acts of creating a profile and cutting the floor beam occur prior to the act of attaching the floor beam.5. The method of claim 4 , wherein the profile of the rib member and the deck plate is created using laser tracking.6. The method of claim 1 , wherein attaching the floor beam comprises tack welding the floor beam with the orthotropic deck panel in a first orientation claim 1 , pivoting the orthotropic deck panel from the first orientation to a second orientation orthogonal to the first orientation claim 1 , and welding the floor beam in continuous weld ...

ADJUSTABLE FORMS FOR POURED CONCRETE STRUCTURES AND RELATED SYSTEMS AND METHODS

An apparatus for adjusting a haunch height and related systems and methods includes a support angle. The support angle includes first and second flanges, and a surface of the first flange includes a hole. The apparatus also includes a coil rod and a rotatable nut. 1. An apparatus for adjusting a haunch height , the apparatus comprising:a support angle, the support angle comprising a first flange and a second flange, wherein a surface of the first flange includes a hole;a coil rod at least partially extending through the hole; anda rotatable nut at least partially surrounding the coil rod, wherein motion of the rotatable nut adjusts a position of the support angle.2. The apparatus of claim 1 , wherein the coil rod is threaded.3. The apparatus claim 2 , wherein the threaded coil rod is seated within a threaded coupler.4. The apparatus of claim 3 , wherein the threaded coupler is embedded in a flange of a bridge girder.5. The apparatus of claim 4 , wherein the coil rod is a first coil rod claim 4 , wherein the apparatus further includes a bearing plate and a second coil rod claim 4 , wherein the bearing plate is coupled to the first coil rod and to the second coil rod claim 4 , and wherein the second coil rod extends parallel to the flange.6. The apparatus of claim 5 , wherein the rotatable nut is welded to the bearing plate.7. The apparatus of claim 1 , further including a coil rod splicer supporting at least a portion of the support angle.8. The apparatus of claim 1 , further including an additional nut coupled to the coil rod and supporting at least a portion of the support angle.9. The apparatus of claim 8 , further including a washer or plate welded to the additional nut and supporting at least a portion of the support angle.10. The apparatus of claim 1 , wherein the apparatus is a stay-in-place form system configured to receive a concrete pour to form a bridge deck.11. An apparatus for adjusting a haunch height claim 1 , the apparatus comprising:a support angle;a ...

PNEUMATIC SUPPORT

A pneumatic support having a body () which can be pneumatically pressurised and which, when under operating pressure, operationally holds a compression member ( to ′) which extends substantially over the length of the body and a tensile member ( to ′) which likewise extends substantially over the length (I) of the body at a distance from each other, wherein the compression member ( to ′) and the tensile member ( to ′) are connected to each other at the end in connection nodes (), and wherein the body which can be pneumatically pressurised has pneumatic drop-stitch transverse fibre pressure panels ( to ). 1. A pneumatic support comprising a body , which can be pneumatically pressurized and which , when under operating pressure , operationally holds a compression member , which extends substantially over the length of the body , and a tensile member , which likewise extends substantially over the length of the body , at a distance from one another , wherein , the compression member and of the tensile member are connected to one another on the end side in connecting nodes , characterized in that the body , which can be pneumatically pressurized , has pneumatic transverse fiber pressure panels.29394144147. The pneumatic support according to claim 1 , wherein connecting points for at least one tensile connecting element ( claim 1 , claim 1 , to ) claim 1 , which extends between the compression member and the tensile member claim 1 , are provided at the compression member and at the tensile member.3. The pneumatic support according to claim 1 , wherein the connecting element extends between the compression member and the tensile member in a zigzag-shaped manner over a plurality of connecting points each in the region of the compression member as well as in the region of the tensile member claim 1 , and wherein at least one connecting element is preferably provided at each of the outer sides of the pneumatic support.4. The pneumatic support according to claim 1 , wherein ...

Eisenbahn-Hilfsbruecke grosser Stuetzweite

Bonding system for wear surfaces

A wear surface such as steel bridge deck surfaced with a wear-resistant overlay such as plastic tiles is disclosed in which the tiles are bonded to the deck by means of a bonding layer having preferably a shore 00 hardness of from approximately 78 to 90 and comprising an elastomer compounded with a stiffening filler in an amount equal to at least about half the weight of the elastomer. Low volatile liquid plasticizer is present in an amount to provide the stated hardness. The elastomer is preferably a mixture of acrylic elastomer and butyl elastomers, and the stiffening filler is a high abrasion furnace carbon black. The tiles are adhered to the layer with a solution coating comprising neoprene in admixture with a terpene-phenolic resin and the coating desirably includes a hydrophobic silica.

Guss asphalt composition and Paving method of the road using the same

본 발명은 구스 아스팔트 조성물 및 이를 이용한 도로포장방법에 관한 것으로서, 좀 더 구체적으로 설명하면, 교각용 도로의 포장에 적합한 물성을 가지면서도 낮은 연화점을 가져서 운반성, 저장성 및 시공성이 우수한 구스 아스팔트를 제공할 수 있는 발명에 관한 것이다. The present invention relates to a goose asphalt composition and a road paving method using the same, more specifically, to provide a goose asphalt which has physical properties suitable for pavement on a pier road and has a low softening point and is excellent in transportability, storability and workability The present invention relates to an image forming apparatus.

Construction method using water resistance layer and stone mastic asphalt

본 발명은 일반적인 아스팔트 포장층의 보조기층 및 기층 또는 교면에 방수층을 형성하고 그 위에 스톤 매스틱 아스팔트를 포설하는 것으로 방수층에 개질혼합재와 채움혼합재를 첨가하여 방수층 상부 및 하부층의 유기적인 결합과 함께 일반적인 택코트나 프라임코트보다 방수 기능을 개선하고, 방수층과 동일한 개질혼합재와 채움혼합재를 사용한 스톤 매스틱 아스팔트를 방수층의 상부에 형성하여 방수층과의 결합력을 향상시킴과 동시에 스톤 매스틱 아스팔트 혼합물의 골재의 인터락킹을 이용하여 포장의 내구성을 증진시키는 포장 구조에 관한 것이다. 또한 스톤 매스틱 아스팔트의 상부에는 다공성 골재를 포설하여 동결융해 저항성을 향상시키기 위한 것이다. In the present invention, a waterproof layer is formed on an auxiliary layer, a base layer or a bridge surface of a general asphalt pavement layer, and a stone mastic asphalt is laid on the base layer or pavement. By adding a modified mixed material and a filler mixed material to the waterproof layer, It is possible to improve the waterproof function of tack coat or prime coat and to improve the bonding strength with the waterproof layer by forming a stone mastic asphalt using the same modifying admixture and filling admixture as the waterproof layer on the upper part of the waterproof layer, To a packaging structure for improving the durability of packaging by using interlocking. In addition, the upper part of the stone mastic asphalt is provided with a porous aggregate to improve the resistance to freezing and thawing.

Compostion for mastic asphalt pavement and manufacturing method of the same

The present invention relates to a mastic asphalt pavement mixture capable of maintaining a constant quality, and a manufacturing method thereof. According to an embodiment of the present invention, the mastic asphalt pavement mixture comprises 70 to 85 wt% of a straight asphalt, 3 to 8 wt% of a polymer modifier, 5 to 15 wt% of a reinforcing agent, 7 to 10 wt% of an asphalt binder composition, and 90 to 93 wt% of an aggregate.

为建筑物和桥面板施加沥青防水膜材料的方法

本发明公开了一种使用木屑为建筑物和桥面板施加沥青防水膜材料的方法。更具体地说，本发明公开了一种使用木屑施加具有优异防水能力的防水膜组合物的方法，因此组合物没有被外力破坏，可以起防水材料作用。

Rahmen Bridge having Corner Connecting Structure of Concrete Members, and Constructing Method thereof

본 발명은 프리스트레스가 도입되어 있는 PSC 거더를 교량 벽체 사이에 거치하고, PSC 거더의 단부가 놓인 교량 벽체의 상단부에 현장 타설 콘크리트를 타설하여 PSC 거더의 단부와 교량 벽체의 상단부를 서로 일체화시키는 모서리를 형성함으로써 라멘 교량을 시공함에 있어서, PSC 거더의 단부와 교량 벽체의 상단부 간의 결합력을 증대시켜 PSC 거더와 교량 벽체를 견고하게 일체화시키면서도, 모서리에 별도의 모서리 보강철근을 배근하는 작업 및 철근의 결속을 위한 커플러 체결작업이 필요가 없도록 하고, 모서리의 구조를 단순화시켜 현장 콘크리트 타설 및 다짐 작업시의 어려움을 해소함으로써, 경제적이고 효율적으로 시공되는 라멘 교량과, 그시공방법에 관한 것이다. The present invention mounts a PSC girder in which prestress is introduced between bridge walls, and casts site-cast concrete on the upper end of the bridge wall on which the end of the PSC girder is placed to integrate the edge of the PSC girder and the upper end of the bridge wall. In the construction of the ramen bridge, the coupling force between the end of the PSC girder and the upper end of the bridge wall increases the coupling force between the reinforcing bar and the reinforcing bar of the reinforcing bar. The present invention relates to a ramen bridge and a construction method that are economically and efficiently constructed by eliminating the need for a coupler fastening operation and simplifying the structure of the corners to solve the difficulties in the concrete placement and compaction work.

Precasted concrete plate

본 고안은 교량의 거더상에 거치되며, 현장타설 콘크리트의 하부에 배치되어, 그 현장타설 콘크리트와 함께 슬래브를 구성하는 피씨플레이트에 있어서, 프리캐스트 방식으로 제작되며, 콘크리트로 이루어지는 판상의 본체; 상기 본체의 내부에 매립되며, 상기 거더의 길이 방향 및 폭 방향으로 일정간격을 두고 배근되는 철근; 상기 본체의 내부에 매립되고, 상기 피씨플레이트에 프리스트레스를 도입하기 위한 강연선; 상기 강연선을 정착시키기 위한 정착구; 일부는 상기 본체에 매설되고, 나머지는 상기 본체의 상면으로 노출되어 상기 현장타설 콘크리트에 매설됨으로써 상기 피씨플레이트와 상기 현장타설 콘크리트의 결합을 견고하게 하는 돌출 구조체;를 포함하여 이루어지는 것을 특징으로 하는 피씨플레이트를 제공한다. The present invention is mounted on the girder of the bridge, disposed in the lower portion of the cast-in-place concrete, the PC plate constituting the slab together with the cast-in-place concrete, which is produced in a precast manner, the plate-shaped body made of concrete; A reinforcing bar embedded in the main body, the reinforcing bar having a predetermined interval in the longitudinal direction and the width direction of the girder; A strand wire embedded in the main body to introduce prestress into the PC plate; A fixing tool for fixing the strand; A part is embedded in the main body, the rest is exposed to the upper surface of the main body is embedded in the cast concrete, the projecting structure for strengthening the coupling of the PC plate and the cast concrete; Provide the plate.

Constructing Method of Bridge using Half Precast Panel having Connecting Bar

본 발명은 거더 사이에 거치되는 반단면 프리캐스트 패널에 긴장재를 배치하여 프리스트레스를 도입하되, 긴장재의 단부에 단면이 확대된 구근을 형성하고, 이러한 구근을 통해서 교폭방향으로 반단면 프리캐스트 패널을 견고하게 연속화시킴으로써, 반단면 프리캐스트 패널의 교폭방향 단부에서 균열이 발생하는 것을 방지하게 되는 반단면 프리캐스트 패널 이용 교량의 시공방법에 관한 것이다. 본 발명에서는 복수개의 거더(2)를 배치하는 단계; 교폭방향 측면 외부에는 연결재가 돌출되어 있되, 상기 외부로 돌출되어 노출된 연결재의 단부에는 연결재의 지름보다 더 큰 지름의 구근(11)이 형성되어 있으며 상기 구근(11)은 교폭방향 외측면 밖으로 돌출되어 있는 구성의 반단면 프리캐스트 패널(1)을, 서로 이웃하는 거더(2)의 상부에 걸쳐서 설치하되, 이웃하는 반단면 프리캐스트 패널(1) 사이에 간격이 존재하고, 상기 간격에서 구근(11)이 서로 겹쳐져 위치하도록 설치하는 단계; 반단면 프리캐스트 패널(1) 사이의 간격에 연속부 콘크리트(20)를 타설하여, 구근(11)이 서로 겹쳐진 상태에서 매립됨과 동시에 이웃하는 반단면 프리캐스트 패널(1)이 서로 일체화되어 연속되게 만드는 단계; 및 상기 반단면 프리캐스트 패널(1)의 상부와 연속부 콘크리트(20)의 상부에 바닥판 구축용 콘크리트(30)를 타설하여 교량의 바닥판을 형성하는 단계를 포함하는 것을 특징으로 하는 교량 시공방법이 제공된다. The present invention is to introduce a prestress by placing the tension member in the half-section precast panel mounted between the girders, forming a bulb with an enlarged cross-section at the end of the tension member, and through the bulb in the cross-section precast panel firmly It is related with the construction method of the bridge | cross section using the half-section precast panel which prevents a crack from generate | occur | producing in the bridge direction direction edge part of a half-section precast panel by making it continuous continuously. In the present invention, placing a plurality of girders (2); A connecting member protrudes from the outside of the lateral direction, and a bulb 11 having a diameter larger than the diameter of the connecting member is formed at an end of the connecting member protruding to the outside, and the bulb 11 protrudes out of the lateral direction of the lateral direction. The half-section precast panel 1 having the structure configured is provided over the upper portions of the neighboring girders 2, and there is a gap between the neighboring half-section precast panels 1, Installing 11) so as to overlap each other; The continuous concrete 20 is poured in the interval between the half-section precast panels 1 so ...

A Steel Composite Bridge Having Steel Plates Connected by Using Concrete Cross Beams and Its Constructing Method

본 발명은 콘크리트 크로스 빔을 이용하여 강 주형을 연결한 강 합성 교량 및 시공방법에 관한 것이다. 본 발명은, 단순 교로 제작되어 각 경간에 설치되는 다수의 강 주형; 상기 강 주형의 단부면 전체에 강 주형의 플랜지보다 넓은 횡방향 폭으로 각각 형성되는 마감판 형태의 웨브와, 그 표면에 다수의 전단 연결 재들이 돌출된 연결부; 및 상기 강 주형의 연결부 사이에서 콘크리트 바닥 판과 일체로 콘크리트 타설되어 서로 인접 배치된 강 주형의 연결부들을 일체로 결합시키는 크로스 빔;을 포함하여 강 주형 간의 용접 또는 볼트 결합 없이도 강 주형들을 길게 연결하는 콘크리트 크로스 빔을 이용하여 강 주형을 연결한 강 합성 교량을 제공한다. 본 발명에 의하면 강 주형을 공장에서 제작하여 현장으로 운반한 후에 강 주형의 연속화 작업이 모두 콘크리트 공사로 이루어 지기 때문에 용접과 볼트체결 작업이 전혀 필요하지 않게 된다. 따라서 현장에서 강 주형 간의 용접 또는 볼트 결합 없이도 강 주형들을 길게 연결하여 강 합성 교량을 신속하게 구축할 수 있음으로써, 현장 시공기간을 단축하고 그에 따른 시공원가의 절감을 이룰 수 있는 우수한 효과가 얻어진다. 삭제 The present invention relates to a steel composite bridge and construction method by connecting a steel mold using a concrete cross beam. The present invention is made of a simple bridge, a plurality of steel molds are installed at each span; A web in the form of a finishing plate, which is formed on the entire end face of the steel mold in a wider transverse width than the flange of the steel mold, and a plurality of shear connecting members protruding from the surface; And a cross beam in which concrete is poured integrally with a concrete floor plate between the connecting portions of the steel mold to integrally connect the connecting portions of the steel molds disposed adjacent to each other; including long welding of the steel molds without welding or bolting between the steel molds. Provided is a steel composite bridge connecting steel molds using concrete cross beams. According to the present invention, after the steel mold is manufactured at the factory and transported to the site, all of the sequential work of the steel mold is made of concrete construction, so that no welding or bolting is required. Therefore, by constructing steel composite bridges quickly by connecting steel molds long without welding or bolting between steel molds in the field, it is possible to shorten the construction time on the site and reduce the construction cost accordingly. . delete

High Grade Waterproofing Asphalt Concrete Composition SIS and CRM and Constructing Methods Using Thereof

The present invention provides a high grade waterproofing asphalt concrete composite containing: 0.1-50 parts by weight of styrene-isoprene; 5-20 parts by weight of styrene butadiene; 10-60 parts by weight of waste tire powder; 2-15 parts by weight of anti-aging agent for rubber; 2-15 parts by weight of an ultraviolet absorbing agent; 2-15 parts by weight of a compatibilizer; 3-15 parts by weight of an antioxidant; 2-15 parts by weight of a deformation preventing agent; 10-30 parts by weight of biomass; 1-10 parts by weight of a performance improver; 5-20 parts by weight of an adhesion promoter; 1-10 parts by weight of a release agent; and 1-10 parts by weight of a stabilizer with respect to 100 parts by weight of asphalt. The high grade waterproofing asphalt concrete composite according to the present invention is provided with high cohesive power and high coupling power to have excellent waterproofness, has high performance grade (PG 88-40), has excellent durability, prevents infiltrating water and potholes while preventing easy occurrence of plastic deformation, aging and/or peeling, reduces noises and performs pavement at low costs.

Integrated form structure for constructing cantilever slab and protective wall of bridge, and construction method using the same

The present invention provides an integrated form structure for constructing a cantilever slab and a protective wall of a bridge and a method for constructing a cantilever slab and a protective wall using the same, in which form support structures having a rectangular bracket structure are manufactured on land to construct the cantilever slab and the protective wall of the bridge, a plurality of the manufactured form support structures are arranged at regular intervals, longitudinal horizontal reinforcement is coupled thereto to manufacture a form support block, a form is integrated therewith to manufacture the integrated form structure, and then the integrated form structure is collectively refloated and installed, thereby being able to minimize high place works for installing a cantilever slab form support structure and manufacturing the form; in addition, a work plate for disassembling a primary fixture of a rectangular form support structure is integrated with the form support block manufactured on land, thereby being able to minimize high place work for disassembling the primary fixture of the form support structure and operation of refloating equipment; in addition, a secondary fixture is newly installed in a vertical member for the protective wall form of the form support structure with the rectangular bracket structure; and, after the slab and the protective wall of the bridge are sequentially constructed, the secondary fixture of the form support structure is disassembled on the previously constructed slab to disassemble the integrated form structure, thereby being able to disassemble the form support structure safely and conveniently.

水泥混凝土桥面双层ac沥青混合料铺装结构及铺装方法

本发明提供了一种水泥混凝土桥面双层AC沥青混合料铺装结构及铺装方法。一种水泥混凝土桥面双层AC沥青混合料铺装结构，水泥混凝土桥面上自下而上依次设置防水粘结层、中间层、粘结层和上面层，中间层包括碎石盲沟和下面层，碎石盲沟设置在路缘石侧面，且碎石盲沟厚度与下面层相同，下面层和上面层均为加聚酯纤维的AC沥青混合料层，所述防水粘结层采用热熔复合改性沥青纤维增强桥面防水粘结层；粘结层采用改性乳化沥青或多组分环氧沥青复合材料。

一种高耐久不等厚钢桥面铺装结构的施工方法

本发明涉及一种高耐久不等厚钢桥面铺装结构的施工方法，其包括以下步骤：步骤一，对不等厚钢桥面板(1)进行清洁及喷砂除锈作业；步骤二，防锈层(2)布设；步骤三，防水黏层(3)洒布；步骤四，底碎石层(4)布设；步骤五，整平层(5)铺设；步骤六，下粘结层(6)洒布；步骤七，下碎石层(7)布设；步骤八，结构层(8)摊铺；步骤九，上粘结层(9)洒布；步骤十，磨耗面层(10)摊铺。本发明所述的施工方法机械化程度高、操作难度低，铺装施工结束后经短期养护即可投入服役，在车辆荷载长期作用下铺装结构的病害发展缓慢且有限，只需对磨耗面层进行定期检修，整体维养成本低，维养难度小，与不等厚钢桥面板之间具备优异的匹配性。

Concrete shear key strengthened with steel cover plate and tension member and the construction method therewith

PURPOSE: A precast steel composite deck with a concrete shear key, strengthened with a steel plate, and a connection member and a construction method thereof are provided to enable cost-efficient construction by not requiring a welding work. CONSTITUTION: A precast steel composite deck(100) with a concrete shear key, strengthened with a steel plate, and a connection member comprises main tension beams(110), intermediate plates(120), upper bars(130), connection sleeves(140), upper concrete, and steel plates(160) for shear key reinforcement. The intermediate plates are used as a lower form of the upper concrete. The upper bars comprise horizontal and vertical bars(131,132). The connection sleeves are formed on the ends of the horizontal bars and have grouting holes(141). The upper concrete is placed on the top of the main tension beams. The steel plates for shear key reinforcement are installed concrete shear keys to be separated from the main tension beams and the sides of the upper bars.

교량상판 해체방법 및 장치

목적 노후화 등에 의해 개축이 필요해진 콘크리트 교량상판을 용이하게 또한 경제성을 구비하여 해체할 수 있는 교량상판의 해체방법에 관한 것이다. 구성 교량상판을 해체함에 있어서, 해체하고자 하는 상판을 복수의 블록으로 절단함과 동시에 정착을 해방하고자 하는 블록의 인접한 양측 블록에 반력잭을 구비한 반력각부를 위치시키고, 이 반력각부 사이에 철거보를 걸쳐서 고정함과 동시에, 철거보위에 반력잭에 접속하여 반력잭의 작동에 의해 연동하는 지례수단을 설치하고, 지레수단과 블록을 접속한 후, 반력잭을 작동시켜서 지레수단에 의해 블록을 달아올리게 한 것이다. 또, 장치에 있어서, 특히 복수의 달아올리기 능력에 대처하기 위하여 지레수단의 지지점 위치를 바꿀 수 있게 한 것을 특징의 하나로 한다.

Temporary prestress deck for steel bridge

A method of constructing a bridge according to the present invention includes: an I-shaped steel girder mounting step of placing the I-shaped steel girder 300 at an alternate or pierched angle; A deck preparation step of preparing a deck 100 made of a reinforced concrete structure; A deck installing step of installing the deck 100 below the I-shaped steel girder 300 so that a preceding load acts on the I-shaped steel girder 300; A mold setting step of setting a mold A for installing the bottom plate 1 using the deck 100 as a work table; Concrete pouring and curing step in which concrete is laid and cured in the formwork (A) to form the bottom plate (1); And a deck removing step of removing the deck (100) and introducing an upward force to the bridge. According to the present invention, an upward force can be introduced into an upper structure in which an I-shaped steel girder and a bottom plate are combined without a separate hydraulic device or power generation device. In addition, by using the construction method of the present invention, stable high-altitude work can be performed and safety accidents can be prevented in the field.

Compostion for mastic asphalt pavement and manufacturing method of the same

The present invention relates to a mastic asphalt concrete pavement method and concrete using the same. The mastic asphalt concrete pavement method according to an embodiment of the present invention comprises the steps of: (s10) forming a surface layer by polishing and cleaning a steel plate deck bridge, a concrete upper deck bridge, or an aged cement concrete road; (s20) forming an adhesive layer by applying an adhesive on the road surface layer; (s30) forming mixture by mixing mastic asphalt binder and aggregate; (s40) storing, heating, stirring and conveying the mixture in a movable plant; and (s50) pulling the conveyed mixture on the adhesive layer. The mixture for pavement consists of: 70 to 85 wt% of straight asphalt; 3 to 8 wt% of polymer modifier; 5 to 15 wt% of stiffener; 7 to 10 wt% of asphalt binder composition containing 1.1 to 7 wt% of stabilizer; and 90 to 93 wt% of aggregate.

Precast end-block with girder connection member and bridge construction method using ths same

본 발명은 교량하부구조에 거더의 양 단부를 강결시킨 후, 상기 거더 상부에 슬래브를 시공하여 교량을 시공함에 있어서, 프리캐스트 방식으로 제작된 단부 프리캐스트블록을 교량하부구조에 간단하게 강결시키는 작업을 통해 교량을 시공함으로서 교량의 급속시공에 효과적으로 대처할 수 있고, 현장공기 단축에 의한 경제적인 교량시공이 가능한 교량시공방법에 대한 것으로써, 이를 위해 본 발명은 프리캐스트블록의 내부로부터 교축방향으로 돌출되도록 형성되는 거더연결재가 미리 형성된 단부 프리캐스트블록을 교축방향으로 서로 마주보는 교량하부구조 상면에 설치하고, 교량하부구조와 상기 단부 프리캐스트블록을 서로 강결시키고, 상기 단부 프리캐스트블록의 거더연결재 사이에 거더를 연결시키는 단계를 포함하는 것을 특징으로 하는 거더연결재가 형성된 단부 프리캐스트블록을 이용한 교량시공방법을 제공한다. According to the present invention, after both ends of the girder are stiffened to the bridge undercarriage, the construction of the bridge by constructing the slab on the upper part of the girder, the work to simply harden the end precast block produced by the precast method to the bridge undercarriage The bridge construction method can effectively cope with the rapid construction of the bridge by constructing the bridge, and the bridge construction method capable of economical bridge construction by shortening the field air. To this end, the present invention protrudes in the direction of the bridge from the inside of the precast block. Girder connecting member is formed so that the pre-formed end precast block is formed on the upper surface of the bridge lower structure facing each other in the axial direction, and the bridge lower structure and the end precast block is rigid with each other, between the girder connecting member of the end precast block Connecting the girder to the Further it provides a bridge construction method using a precast block end consolidated is formed.

continuous steel bridge having precast concrete slab and construction method thereof

본 발명은 프리캐스트 콘크리트 바닥판을 갖는 강주형 연속합성형 교량 및 이를 시공하는 방법에 관한 것이다. The present invention relates to a steel cast continuous composite bridge having a precast concrete deck and a method of constructing the same. 본 발명은 강주형의 상부에 다수의 콘크리트 바닥판을 교량길이방향으로 연속적으로 결합하여 시공되는 교량에 있어서, 상기 내부지지점에서 부모멘트가 발생되는 복수개의 바닥판의 몸체에 적어도 하나이상 관통공을 형성하고, 상기 내부지지점에서 부모멘트가 발생되는 복수개의 바닥판중 최선단 바닥판과 최후단 바닥판에 각각 선,후단 정착구를 구비하며, 상기 관통공을 통하여 선,후단정착구사이에 양단이 연결되는 내부강선을 갖추어 상기 바닥판사이에 배치되는 유압잭으로서 바닥판을 상기 정착구 방향으로 이동시키어 상기 정착구사이의 내부강선에 긴장력을 인가하는 프리스트레스부를 구비하여 구성된다. The present invention is a bridge that is constructed by continuously combining a plurality of concrete bottom plate in the bridge length direction on the upper portion of the steel casting mold, forming at least one through hole in the body of the plurality of bottom plate generated the parent moment at the inner support point And a front end and a rear end fastening device are respectively provided at the bottom end and the bottom end of the plurality of bottom plates in which the parent moment is generated at the inner support points, and both ends are connected between the front and rear end fixing holes through the through holes. The hydraulic jack is disposed between the bottom plates with an inner steel wire, and is provided with a prestress portion for moving the bottom plate in the direction of the anchorage to apply tension to the inner steel wire between the anchorages. 본 발명에 의하면, 내부지지점과 같이 하중에 의하여 부모멘트가 발생하는 부분에 내부강선을 이용하여 압축응력을 도입하므로써 바닥판에 작용하는 인장응력을 제어하고, 시공기간을 단축하고, 공사비용을 절감할 수 있다. According to the present invention, by introducing the compressive stress using the internal steel wire to the portion where the parent moment occurs due to the load, such as the internal support point, to control the tensile stress acting on the floor plate, shorten the construction period, reduce the construction cost can do. 강주형, 바닥판, 부모멘트, 내부강선, 유압잭, 압축응력, 인장응력, 프리스트레스 Steel casting, bottom plate, parent cement, internal steel wire, hydraulic jack, ...

Connecting Structure between Steel Girder and Precast Panel

본 발명은, 강재거더의 상부에 길이방향을 따라 배치된 전단연결재; 프리캐스트 바닥판의 저면 상에 강재거더와의 접촉 부위를 따라 형성되고, 강재거더 상의 전단연결재가 위치되는 연결홈; 프리캐스트 바닥판의 상부면에서 연결홈으로 연통된 타설공; 연결홈을 통해 노출되는 철근을 포함하며, 프리캐스트 바닥판이 강재거더 상에 복수개가 연속적으로 배치된 후, 타설공을 통해 모르타르를 타설하면 모르타르는 연결홈을 통해 이동하며 충진된 후 경화되어 전단연결재와 철근에 의해 강재거더와 프리캐스트 바닥판이 연결되는 강재거더와 프리캐스트 바닥판 연결 구조를 제공한다. 본 발명에 의한 강재거더와 프리캐스트 바닥판 연결구조에 의하면, 프리캐스트 바닥판을 따라 연결홈을 형성하고, 강재거더 상에는 연결홈에 따라 복수개의 전단연결재를 균등하게 배치함으로써 강재거더와 프리캐스트 바닥판의 연결부위에 응력이 고르게 분산되는 효과가 있다. 또한 프리캐스트 바닥판에 연결홈을 형성하여 타설공을 통해 모르타르를 충진하면 연결홈을 통해 모르타르가 이동하며 모르타르가 충진되어 프리캐스트 바닥판과 강재거더가 서로 연결되도록 함으로써 강재거더와 프리캐스트 바닥판의 연결을 위한 작업 시간이 단축되어 작업 생산성이 향상된다. The present invention, the shear connector disposed along the longitudinal direction on top of the steel girder; A connection groove formed along a contact portion with the steel girder on a bottom surface of the precast bottom plate and having a shear connector on the steel girder; A pour hole communicating with the connecting groove in the upper surface of the precast deck; It includes reinforcing bars exposed through the connection groove, and after the plurality of precast bottom plates are continuously disposed on the steel girder, and when mortar is poured through the pour hole, the mortar moves through the connection groove and is filled and cured. The steel girder and the precast bottom plate connecting structure are connected to the steel girder and the precast bottom plate by the reinforcing bars and the reinforcing bars. According to the connection structure of the steel girder and the precast bottom plate according to the present invention, the connection groove is formed along the precast bottom plate, and the steel girder and the precast floor are arranged evenly on the steel girder according to the connection groove. There is an effect that the stress is evenly distributed in the connecting portion of the plate. In addition, when the mortar is filled through the pouring hole by forming the connecting groove in the precast deck, the mortar moves through ...

Box Girder Having Hybrid Cantilever and Bridge Using Such Box Girder

본 발명은 박스형 단면을 가진 주거더부가 양측의 캔틸레버부에 비하여 상대적으로 작은 형태의 단면을 가지고 있고 양측의 캔틸레버부는 초고강도 콘크리트로 이루어지며 바닥판이 일체로 되어 있는 T형 단면을 가지고 있어 광폭의 교량 상부구조를 효과적으로 구현할 수 있도록 구성된 초고강도 콘크리트 날개형 캔틸레버부를 구비한 교량용 콘크리트 박스 거더와, 이를 이용한 교량에 관한 것이다. 본 발명에서는 사각형 단면을 가지는 주거더부(10)와, 상기 주거더부(10)의 양측에 구비되는 캔틸레버부(20)를 포함하며; 주거더부(10)는 하부판(11), 상부판(12) 및 측벽(13)으로 이루어져 사각형 단면을 가지고 있고 교축방향으로 길게 형성되고; 상기 캔틸레버부(20)는 수평한 바닥판부(21)와 수직한 수직 가로보(22)로 이루어져 T자 형상의 날개형 단면을 가지고 있으며, 교축방향으로 상기 캔틸레버부(20)가 연속적으로 결합되어 배치됨으로써 상기 수직 가로보(22)가 교축방향으로 간격을 가지고 위치하게 되고; 긴장재(31)에 의해 상기 양측 캔틸레버부(20) 사이에 긴장력이 도입되어 캔틸레버부(20)가 주거더부(10)와 일체화되는 구성을 가지는 것을 특징으로 하는 박스 거더, 및 이를 이용한 교량이 제공된다. 박스, 거더, 교량, 가로보, 캔틸레버, 긴장재, 사장교 The present invention has a housing-shaped section having a box-shaped cross section having a relatively small cross section compared to the cantilever portions on both sides, and the cantilever portions on both sides are made of ultra high-strength concrete and have a T-shaped cross-section in which the bottom plate is integrated, thereby wide bridges. The present invention relates to a concrete box girder for a bridge having an ultra high strength concrete wing-shaped cantilever configured to effectively implement a superstructure, and a bridge using the same. The present invention includes a housing further having a rectangular cross section (10), and the cantilever unit (20) provided on both sides of the housing (10); The housing portion 10 is composed of a lower plate 11, an upper plate 12, and a side wall 13, which has a rectangular cross section and is elongated in the axial direction; The cantilever portion 20 is composed of a horizontal bottom plate portion 21 and a vertical crossbeam 22 perpendicular to each other and has a T-shaped wing-shaped cross section. The cantilever portion 20 is continuously coupled in an axial direction. Thereby the vertical cross beams 22 are positioned at intervals in the axial direction; A tension box is introduced between the two side cantilever portions 20 by the tension member 31 to ...

钢筋-钢板骨架组合桥面板及其施工方法

本发明提供了一种钢筋‑钢板骨架组合桥面板及其施工方法，钢筋‑钢板骨架组合桥面板包括多个骨架单元和混凝土，骨架单元包括钢板、钢筋网以及连接件，钢板与钢筋网之间通过连接件相连接，钢筋网架设于钢板上并浇筑混凝土，相邻两个骨架单元之间通过连接单元衔接并通过连接单元将骨架单元架设于钢梁上；本发明通过将钢板、钢筋网和连接件预先制成骨架单元并作为结构承受荷载，从而使得骨架单元具有厚度小、抗弯强度高、跨越能力强、易于吊装和挠度小等特点，从而使其应用范围广泛；另外，本发明的钢筋‑钢板骨架组合桥面板中的焊接作业均在工厂预先完成，施工现场采用全机械操作，从而具有施工速度快和施工质量好等特点。

Lightweight deck and method of manufacturing the same

The present invention relates to a lightweight soil deck, and a manufacturing method thereof, wherein the lightweight soil deck can provide excellent deflection strength and impact strength and reduce a weight. Moreover, the lightweight soil deck comprises: a base member; a soil paste layer formed on the base member; a resin layer coated on the surface of the soil paste layer exposed to the outside of the base member; and a non-slip layer formed on the surface of the resin layer.

Concrete structure waterproofing construction method using deposite-coating on site

The present invention relates to a method for constructing a concrete structure, and more specifically, to a method for waterproofing and constructing a concrete structure which applies a hybrid sheet deposited at a site to prevent infiltration of water into a cured concrete structure. According to the present invention, the method for waterproofing and constructing a concrete structure using an on-site deposition method comprises: a step of constructing a concrete structure; a step of cleaning a basis surface of the concrete structure, on which a waterproof layer is to be formed; a step of stirring cement, an aqueous dispersion emulsion polymer, and filler to uniformly mix a waterproof agent; a step of depositing the mixed waterproof agent on the cleaned basis surface to form a waterproof layer; and a step of drying and hardening the deposited waterproof layer.

Rhamen bridge having prestressed concrete girder of arch-shaped and construction method thereof

본 발명은 본 발명의 아치형 PSC빔을 이용한 라멘교는, 하부에 기초를 갖고 지반 위에 설치되는 복수 개의 벽체와; 벽체 상부에 설치되는 무수축콘크리트와; 상기 무수축콘크리트 상부에 설치되고, 지점부 선단에는 "ㄷ"자형상의 매입철근 일부가 돌출형성되며, 지점부에는 하부에 배치되고 중앙부에는 상부에 배치된 플랜지가 압축부위에 형성되어 상부슬래브 가설시 동바리와 비계가 필요 없어 시공이 간단하며 긴장력이 도입된 아치형 PSC빔과; 상기 아치형 PSC빔 위로 타설되는 상부슬래브와; 상기 무수축콘크리트와 벽체의 상단부에 타설되는 벽체콘크리트를 포함하여서 이루어지고, 또한, 본 발명의 아치형 PSC빔을 이용한 라멘교의 시공방법은, 지점부 선단에는 "ㄷ"자형상의 매입철근 일부가 돌출형성되고, 지점부에는 하부에 배치되고 중앙부에는 상부에 배치된 플랜지가 형성되며, 긴장력이 도입된 아치형 PSC빔을 제작하는 단계와; 하부에 기초를 갖고 지반 위에 복수 개의 벽체를 설치하는 단계와; 지반 위에 설치된 벽체 상부에 무수축콘크리트를 설치하는 단계와; 긴장력이 도입된 아치형 PSC빔을 상기 벽체 상부의 무수축콘크리트 위에 설치하는 단계와; 상기 아치형 PSC빔 위로 상부슬래브를 타설하는 단계와; 상기 무수축콘크리트와 벽체의 상단부에 벽체콘크리트를 타설하는 단계를 포함하여서 이루어지는 아치형 PSC빔을 이용한 라멘교 및 그 시공방법에 관한 것이다. 이러한 본 발명은 강합성 거더 대신에 아치(반달)형 형태로 제작된 PSC 빔을 사용함으로써 상부자중을 최소화하고 상부슬래브와 벽체가 만나는 우각부의 응력전달을 확실하게 하여 경제성과 구조적 효율성을 동시에 확보할 수 있는 효과가 있다. The present invention provides a ramen bridge using the arcuate PSC beam of the present invention, comprising: a plurality of walls having a base at the bottom thereof and installed on the ground; Non-concrete concrete installed on the wall; It is installed on the non-concrete concrete, the part of the "B" shaped reinforcing bar is protruded at the tip of the branch portion, the flange is disposed at the lower portion in the branch portion and the upper portion is formed at the compression portion in the upper portion when the upper slab is installed. An arc-shaped PSC beam, which is simple in construction and does not require clubs and scaffolding, and has introduced tension; An upper slab cast over the arcuate PSC beam; Including the non-concrete concrete and wall concrete which is poured on the upper end of the wall, and the construction method of the ramen bridge using the arched PSC beam of the present invention, a portion of the "B" -shaped embedded reinforcing bar protrudes at the tip of the branch portion. And a flange disposed at a lower portion of the branch portion and a flange disposed at an upper portion of ...

Incremental launching apparatus for launching concrete slab for composite bridge using form of buried type

본 발명의 매립형 거푸집을 이용한 강합성 교량의 상부슬래브 압출가설용 압출가설 장치는, 압출슬래브 작업대에 배치되고, 상부슬래브 하부에 터널을 형성하는 매립형 거푸집; 상부슬래브에 전단포켓부를 형성하기 위해 매립형 거푸집 상부에 체결되는 포켓 거푸집; 압출 방향을 따라 배치되어 상부슬래브의 압출을 가이드하며, 매립형 거푸집 및 포켓 거푸집이 배치되는 제작대 플랜지; 제작대 플랜지 상부에 배치되고, 전단포켓 개구부가 형성된 상부슬래브를 거더의 상부플랜지 상에서 연속적으로 압출하는 압출잭; 및 상부슬래브의 압출 전에 거더의 상부플랜지 상에 용접되어 상부슬래브와 상부플랜지 합성시 전단연결재 역할을 하는 전단 스터드를 포함하되, 매립형 거푸집은 상부슬래브에 매립된 상태로 압출가설되며, 상부슬래브는 전단포켓 개구부가 형성된 전단포켓부 및 전단포켓 개구부가 형성되지 않는 일반부가 형성되는 것을 특징으로 한다. An extruding apparatus for an upper slab extrusion of a steel composite bridge using a buried formwork of the present invention comprises: a buried form disposed in an extruded slab workbench and forming a tunnel under the upper slab; A pocket form fastened to the top of the buried formwork to form a shear pocket portion in the upper slab; A production stand flange disposed along the direction of extrusion to guide the extrusion of the upper slab, wherein a buried formwork and a pocket formwork are disposed; An extrusion jack disposed above the fabric flange and continuously extruding an upper slab formed with a shear pocket opening on the upper flange of the girder; And a shear stud welded on the upper flange of the girder prior to the extrusion of the upper slab to serve as a shear connector in the combination of the upper slab and the upper flange, wherein the buried form is extruded in a state of being embedded in the upper slab, A front end pocket portion in which the pocket opening is formed and a general portion in which the front end pocket opening is not formed are formed.

A cantilever system having the function of vibration proofing shock absorber

The present invention relates to a cantilever system having a shock absorbing function. Provided is the cantilever system having a shock absorbing function, in which the cantilever system is easily installed due to a reverse coupling structure of a first cantilever portion and a second cantilever portion, in which vibration or shock generated in a structure is absorbed and dispersed to be reduced as the first cantilever portion and the second cantilever portion are elastically combined by an elastic body and a spring buffer unit, and for effectively corresponding to deformation and elastic rotation of a deck road structure, caused by an earthquake and the like. To achieve the described objective, the cantilever system having a shock absorbing function includes: a first cantilever portion installed to allow one side to be combined with an edge of a structure and the other side to protrude toward the outside of the structure, in which an inclination accommodating portion at an incline in a reverse direction from an upper part to a lower part is formed in an end of the other side, and in which a support plate is horizontally protruding under the inclination accommodating portion; a second cantilever portion in which an inclined fitting plate is installed in an end of one side to be inserted into the inclination accommodating portion, and installed to be supported by the support plate while being insertion-combined with the inclination accommodating portion through the inclined fitting plate; an elastic body elastically supporting the second cantilever portion as the elastic body is installed on an upper surface of the support plate to be interposed between the support plate and the second cantilever portion; and a plurality of spring buffer units elastically supporting the first cantilever portion and the second cantilever portion by elastically fastening the inclination accommodating portion to the inclined fitting plate.

양단부에 프리스트레스미도입부를 설치한 프리스트레스트콘크리트합성거더와 이의 제작방법 및 이를 이용한 조립식슬래브교 시공방법

본 발명은 해안에 일정한 크기의 부두를 설치하기 위하여 잔교를 설치하거나 또는 하천을 복개하기 위하여 설치하는 복개교량인 조립식슬래브교에 관한 것이다. 지반에 격자형으로 강관파일을 다수개 설치하고, 상기 강관파일의 일정범위 하부에 내부받침판을 설치하고, 상기 내부받침판이 설치된 내부와 강관파일의 상부에 수직철근이 노출되도록 설치하고, 상기 강관파일의 상부에 하부지지대를 걸쳐설치하고, 상기 하부지지대 위에 프리스트레스트콘크리트합성거더를 거치하면서, 상기 콘크리트합성거더의 단부에 노출된 노출강선및 노출철근을 수직철근과 함께 루프철근으로 상호 연결하여 설치하고, 상기 설치된 루프철근에 방사상으로 일정한 간격을 두고 방사철근을 연결설치한 거더연결부를 설치하고, 상기 프리스트레스트콘크리트합성거더의 상부에, 양단부에 프리스트레스가 도입되지 않도록 한 프리캐스트콘크리트판넬을 마루깔듯이 다수개 설치하고, 상기 거더연결부와 상기 프리캐스트콘크리트판넬의 상부에 콘크리트를 타설경화시켜 슬래브를 설치한 조립식슬래브교 시공방법에 관한 것이다.

Long span vertical arch bridge structure with temperature fixed point

본 발명은 온도고정점을 분할시킨 장경간 상로 아치 교량구조에 관한 것이다. 본 발명은 이를 위해 다수의 교각과 교각의 사이에 각각 연결 설치되는 아치리브(20); 상기 각각의 교각이 설치된 아치리브의 상부에 수직으로 설치되는 장기둥(31); 상기 각각의 아치리브의 상부 좌우측 양단에 수직으로 설치되는 신축이음기둥(50); 상기 각각의 아치리브의 상단 중앙에 수직으로 설치되는 단기둥(61); 상기 장기둥의 상단에 수평으로 설치되는 고정점교량상판(30); 및 상기 단기둥의 상단에 수평으로 설치되는 신축이음교량상판(60);으로 구비되어 구성된다. 상기와 같이 구성된 본 발명은 장경간 교량에서 장대레일신축이음장치(Rail Expansion Joint: R.E.J)를 배제하는 교량형식을 제공하되 특히 이를 위해 장경간을 가지는 아치구조물 위에 온도고정점을 분할시키는 연속 라멘구조물이 적용된 복합구조형식을 제공하여 교량상판 온도 신축량을 일정치 이하로 유지시킬 수 있도록 한 것이고 또한 상판을 연속 라멘형식으로 적용함과 아울러 교각과 상판 그리고 교각을 상호 연결하는 아치형 격벽을 설치하여 온도신축에 저항하도록 한 것이며 이로 인해 제품의 시공성과 품질을 대폭 향상시켜 소비자로 하여금 좋은 이미지를 심어줄 수 있도록 한 것이다. 교량신축이음부, 온도고정점 분할, 장경간, 상로 아치 교량구조. The present invention relates to an arch bridge structure with a long span divided by a temperature fixed point. The present invention is an arch rib 20 is connected to each other between the plurality of bridges and piers for this purpose; An organ pole 31 installed vertically on an upper portion of the arch rib on which each pier is installed; Stretch joint pillars 50 which are vertically installed at the upper left and right sides of each of the arch ribs; A short column 61 installed vertically at the center of the upper end of each arch rib; A fixed point bridge top plate 30 installed horizontally on an upper end of the long term column; And expansion joint bridge top plate (60) installed horizontally on the upper end of the short column. The present invention configured as described above provides a bridge type that excludes a rail extension joint (REJ) from a long span bridge, but for this purpose, a continuous ramen structure for dividing a temperature fixed point on an arch structure having a long span. The composite structure type is applied to keep the temperature of the bridge deck temperature below a certain value. The system is also applied to the roof plate in a continuous ramen form, and the expansion and contraction of arch bridges connecting the bridges, decks and piers is installed. It has ...

Collecting apparatus

본 발명은 교량의 상판에 설치되는 집수구에 유동체에 포함된 오물을 퇴적시키는 수단 및 그 퇴적된 오물을 수거할 수 있는 수단이 구비되어 집수관 및 배수관의 막힘을 사전에 예방할 수 있으며 이로 인해, 환경오염도 추가적으로 예방되는 집수구에 관한 것이다. The present invention is provided with a means for depositing the dirt contained in the fluid and a means for collecting the accumulated dirt in the water collecting port installed on the top plate of the bridge can prevent the clogging of the water collecting pipe and drain pipe in advance, thereby Contamination is also directed to catch basins which are additionally prevented. 이를 위해, 본 발명은 우수, 오수 및 오물을 포함하는 유동체를 외부로 배출시키는 집수구를 구성함에 있어서, 상기 집수구는, 소정깊이에서 단차되어 퇴적공간(11)이 형성된 집수관(10)과, 상기 집수관(10)의 상단부에 안착되는 것으로 전면에 다수의 유입공(21,22)이 형성된 덮개(20)와, 상기 집수관(10)에 단차되어 형성된 퇴적공간(11)의 끝단부에 설치되는 것으로 상기 덮개(20)를 통해 유동되는 유동체 중 우수 및 오수와 같은 액체는 걸러주고, 오물은 퇴적시켜 주는 유동체 선별수단(30)으로 이루어진다. To this end, the present invention in the configuration of the water collecting port for discharging the fluid containing rainwater, sewage and dirt to the outside, the water collecting port, the water collecting pipe 10 is formed stepped at a predetermined depth (11), and the It is installed at the end of the cover 20 formed with a plurality of inlet holes (21, 22) on the front side and the sedimentation space (11) formed in the collecting pipe (10) to be seated on the upper end of the collecting pipe (10) It consists of a fluid sorting means 30 to filter the liquid, such as rainwater and sewage of the fluid flowing through the cover 20, and to deposit the dirt. 교량, 집수구, 집수관, 배수관, 오물, 쓰레기, 필터 Bridge, Sewer, Sump, Drain, Sewage, Garbage, Filter

Rocking bridge having module type rail and footplate

A suspension bridge according to the present invention comprises: main tower parts arranged at both sides; a cable connected between the main tower parts; a bridge unit installed between the two main tower portions to allow a pedestrian to pass thereon; and support wires connected between the bridge unit and the cable. The bridge unit includes: a guard-rail column part arranged at regular intervals; an upper bar arranged between the guard-rail column parts in a modular form and arranged on the upper side in a horizontal direction; a lower bar horizontally arranged at a lower side; a guard-rail part including a connection bar connected between the upper bar and the lower bar in a vertical direction; a footboard part arranged between the guard-rail column parts in a modular form; and a flexible connection part flexibly connected between the guard-rail column part and the guard-rail part. The flexible connection part includes: a hinge plate fixated on the guard-rail column part and having a first hinge plate protruding to one side and a second hinge plate protruding to the other side; a first slide member hinge-connected to the first hinge plate and sliding-movably inserted into one end of the upper bar and the lower bar of the guard-rail part; and a second slide member hinge-connected to the second hinge plate and sliding-movably inserted into the other end of the upper bar and the lower bar of the guard-rail part, thereby modularizing the guard-rail part and the footboard part such that, if assembled on the spot, construction is finished to reduce construction time and construction costs.

Blow mold footbridge

The present invention relates to a pile drive type footbridge which is installed on a slope face or a bank of a road for passage of pedestrians or bicycles and which can prevent sinking and deformation of posts due to damage or destroy of soil of the slope face, thereby enhancing durability, providing excellent constructability, reducing construction expenses, and remarkably reducing the construction period. The pile driven footbridge according to an embodiment of the present invention comprises: a plurality of posts vertically standing under the ground of a slope face of a road and installed at predetermined intervals by striking them by a pile driver; a support bar connected and mounted at the upper sides of the posts in the form of ″X″; a support frame put on the upper portions of the posts to be fixed; a main beam put on the upper portion of the support frame and mounted in the longitudinal direction; a footbridge mounted on the upper portion of the main beam to form the bottom surface when concrete or an elastic paving material is poured; and height adjusting means mounted between the post and the support frame to adjust height of the support frame.

Concrete slab structure and construction method

본 발명은 처짐에 대한 강성 즉 휨강성이 향상된 구조의 콘크리트 슬래브 구조물 및 그 시공방법을 개시한다. 본 발명에 따른 콘크리트 슬래브 구조물은: 콘크리트를 타설하여 형성되는 콘크리트 슬래브층; 그리고 상기 콘크리트 슬래브층의 처짐을 지지하기 위하여, 상기 콘크리트 슬래브층과 일체로 되어 상기 콘크리트 슬래브층과 일체 거동을 하는 에프알피 파이프(FRP Pipe)를 포함하여 구성된다. The present invention discloses a concrete slab structure and a construction method thereof in which a rigidity against deflection, that is, flexural rigidity is improved. Concrete slab structure according to the present invention includes: a concrete slab layer formed by pouring concrete; And in order to support the deflection of the concrete slab layer, it is configured to include a FRP pipe (FRP Pipe) to be integral with the concrete slab layer and integral with the concrete slab layer. 상술한 구성을 가지는 본 발명에 따르면, 인장강도 및 인장에 대한 저항력이 우수한 에프알피(섬유강화플라스틱)의 특성을 갖는 상기 FRP 파이프가 콘크리트 슬래브층과 일체적 거동을 하면서 처짐을 감소시키고, 기존 콘크리트 슬래브 구조물에 비해 처짐방지를 위한 철근 등의 재료비가 절감되며, 더 나아가 상기 FRP 내부에 콘크리트가 타설되지 않도록 중공의 비충전식인 경우 시멘트 기타 골재의 소모량이 절감되어 콘크리트 슬래브 구조물의 자중이 감소된다. According to the present invention having the above-described configuration, the FRP pipe having the characteristics of FRP (fiber-reinforced plastic) excellent in tensile strength and tensile strength while reducing the deflection while integrally behaving with the concrete slab layer, existing concrete Compared with slab structures, material costs such as rebar for preventing sagging are reduced, and in addition, when the hollow non-filling type is not placed in the FRP, the consumption of cement and other aggregates is reduced, thereby reducing the weight of the concrete slab structure. FRP 파이프, 콘크리트 슬래브층, 데크 플레이트, 주근, 래티스, 받침부재 FRP pipe, concrete slab layer, deck plate, freckles, lattice, support member

Rahmen bridge construction method with abutment socket and tendon

PURPOSE: A construction method of a rahmen bridge using a socket and an abutment horizontal tendon is provided to improve construction performance by easily and strongly coupling an abutment and both ends of a girder. CONSTITUTION: A construction method of a rahmen bridge using a socket and an abutment horizontal tendon is as follows. Abutments(100) are installed to be separated from each other in a longitudinal direction. Both ends of girders(200) are inserted into sockets formed in the top of the abutments. A form is previously installed in the top of the girders and the abutments. A slab is integrally formed in the form.

用于钢混叠合梁预制全宽桥面板安装的轻型装置

本发明涉及一种用于钢混叠合梁预制全宽桥面板安装的轻型装置，承重框架系统通过前支腿、中支腿、后支腿支撑在轨道系统以及前端临时搁置墩上，轨道系统以及前端临时搁置墩直接布置在钢梁顶上；桥面板起吊系统布置在上部承重主横梁上，上部承重主横梁与承重框架系统之间设置滑道以及牵引拉杆，承重框架系统及运板小车共用一套轨道系统和牵引卷扬机。该装置体积轻便，施工过程安全可靠，可用于钢混叠合梁全宽预制桥面板的安装。施工过程中该装置直接利用钢梁顶面站位进行操作，可实现整跨钢梁顶面任意位置的预制桥面板安装，施工便捷快速，该装置以及配套的运输系统直接利用外部卷扬机作为牵引，构造简单，受施工环境制约小，可节约施工成本。

Assembly type steel plate bridge deck continuous structure and construction method

本发明公开了一种装配式钢板桥面连续构造及施工方法，连续构造位于桥梁相邻跨主梁的接缝处，包括两相邻主梁分别具有的且相对的端部Ⅰ和端部Ⅱ，端部Ⅰ和端部Ⅱ之间具有接缝，覆盖所述接缝且固定于所述端部Ⅰ和端部Ⅱ的上表面装配有连续钢板；本发明采用在主梁安装就位后再在相邻跨主梁桥道板断缝间安装桥面连续钢板，再加铺沥青铺装层，该结构既保持简支梁的受力体系又实现了相邻跨主梁间桥面无断缝，行车平顺；桥面连续钢板具有较强的抵抗轴向拉压、弯矩、剪力作用的能力，克服了传统混凝土桥面连续构造受拉开裂的致命弱点，连接施工迅速，实现了全装配式施工理念，质量易于保证，在钢结构表面涂装和桥面防水层具有质量保证下，具有较好的耐久性和可靠性。

Steel beam using perpendicular plate member and tendon member

본 고안은 수직판재를 상부 및/또는 하부플랜지에 돌출되도록 보강판을 이용하여 고정시킨 형태로 상기 보강판에는 긴장재가 긴장 후 정착되도록 하여 프리스트레스가 강재빔에 도입되도록 함으로서 그 제작의 용이성과 강성증대의 효과를 최적화 할 수 있어, 보다 장 지간으로 교량용 주형 및 건축용 들보 등에 사용할 수 있도록 한 강재빔에 관한 것이다. The present invention is a vertical plate is fixed by using a reinforcing plate to protrude to the upper and / or lower flanges in the form of the tension material is fixed to the reinforcement plate after the tension to be introduced into the steel beam to increase the ease and rigidity of the fabrication This invention relates to steel beams that can be used to optimize the effects and to be used in bridge molds and building beams. 강성, 강재빔, 보강판, 긴장재 Rigidity, steel beam, reinforcement plate, tension material

Construction method of girder bridge with later-tension precast plate

A construction method of a girder bridge with a later-tension precast floor slab is provided to manage the girder bridge effectively by introducing compression stress to the precast floor slab and controlling the tensile crack generation. A concrete(C) is poured on an abdomen of a negative moment part girder. A positive moment part girder and the negative moment part girder are continuously placed on a pier(500). A precast floor slab(300) laid with sheath pipes is mounted on the negative moment part girder. Non-attached steel wires(330) are inserted in the sheath pipe and then tensed to apply compression force to the precast floor slab. The concrete is poured and hardened between the upper and abdomen parts of the positive moment part girder and on the connected parts between the positive and negative moment part girders.

Micro-surfacing overlay construction method suitable for pavement preventive maintenance

本发明公开了一种适用于路面预防性养护的微表处罩面施工方法，包括如下步骤：步骤一，施工前准备：包括原材料准备和机械准备；原材料包括粗集料、细集料、改性乳化沥青、填料、添加剂；步骤二，原路面病害处理：提前对原路面进行调查，对于旧路面的纵向及横向裂缝，要根据裂缝的性质和裂缝宽度进行灌缝或挖补处理，对旧路面车辙大于1.5cm或有龟裂、唧浆等问题的部位提前进行挖补处理，对原路面标线、箭头、限速等进行精铣刨处理；步骤三、摊铺作业。对现有应用的微表处施工技术进行深入研究改良，克服原有微表处施工工艺铺筑后表观不均匀、光板路、接缝不平整、表面划痕、泛油现象、社会车辆通行一个月后过程中质量不稳定等问题。

Suspension hanger for slab form

A suspension hanger for a slab form is provided to allow workers to install the slab form simply and quickly by sustaining the slab form with horizontal support beams. A suspension hanger(H) for a slab form comprises a pair of fixing members(10), a plurality of positioning members(20), and two holding member(30), and horizontal support beams(A). Each fixing member includes two side protrusions(12) which are protruded out of a PC(Prestressed Concrete) girder(G) in a width direction. Exposed reinforcing bars(R), which are exposed on the top surface of the PC girder, are sandwiched between the fixing members. The positioning members pass through the fixing members sandwiching the exposed reinforcing bars to fix the position of the fixing members. The holding members, are height-adjustable, and installed at two side protrusions. The holding member extends lower than the top surface of the PC girder. The horizontal support beams, which is suspended by the holding members, sustains slab forms by being installed between two PC girders.

Prefabricated precast steel grid composite deck and the construction method therewith

프리캐스트 격자형 강합성 바닥판을 보다 간단하게 조립 제작할 수 있으면서도 전체 바닥판의 경량화 및 구조적 성능을 증진시킬 수 있어 최적화된 강합성 바닥판 구조시스템이 가능하면서도 바닥판들의 이음부의 연결시공이 용이하며, 상기 이음부에 균열파괴가 발생하는 경우에도 최소한의 전단저항성능을 확보할 수 있는 조립식 프리캐스트 격자형 강합성 바닥판 및 그 시공방법에 대한 것이다.

Precast slab bridge using continuous slab and construction method thereof

다경간 교량의 연속지점부에 현장타설 콘크리트 또는 프리캐스트 연속화슬래브를 설치하여 프리캐스트 슬래브를 연속화시키되, 연속지점부에서 신축이음장치를 설치하지 않고서도 교량을 시공할 수 있는 연속화슬래브를 이용한 프리캐스트 슬래브교량 및 그 시공 방법이 개시되며, 상기 프리캐스트 슬래브교량은 교량하부구조의 연속지점부(A)에 서로 종방향으로 이격 설치되어 서로 마주보도록 설치된 프리캐스트 슬래브; 및 상기 프리캐스트 슬래브의 하부는 서로 이격되도록 한 상태에서, 상부는 서로 연속화되도록 형성된 연속화슬래브;를 포함한다. The precast slab is made continuous by installing cast-in-place concrete or precast continuous slab at the continuous point of the multi-span bridge. Disclosed are a slab bridge and a construction method thereof, wherein the precast slab bridge includes: precast slabs installed to face each other by being spaced apart from each other in the longitudinal direction at the continuous point portion (A) of the bridge lower structure; and a continuous slab formed so that the lower portions of the precast slabs are spaced apart from each other and the upper portions of the precast slabs are continuous with each other.

Rhamen bridge and construction method there of

PURPOSE: A Rhamen bridge with minimized size of a foundation and a wall and a construction method thereof are provided to minimize corner moment on beam weight and improve the convenience of the temporary installation. CONSTITUTION: A Rhamen bridge with minimized size of a foundation and a wall comprise a foundation(1), a wall, a connecting steel girder, an upper beam, a bottom slab concrete(5), and a wall concrete(6). The foundation is installed on the ground. The wall is installed on the foundation so that moment on the top load is not transmitted to the foundation. The connecting steel girder is installed on the top of the wall to connect to the upper beam. The upper beam is connected to the connecting steel girder. The bottom slab concrete is placed on the upper beam.

Broadcast receiver and method for both direction broadcasting

본 발명은 기존 방송프로그램에서 시청자들이 직접적으로 참여하는데 발생하는 비용과 전화를 이용하여야 하는 것의 불편함을 해소하여 시청자들을 방송프로그램에 적극적으로 참여를 유도할 수 있는 양 방향성 방송 방법을 제공하기 위한 것으로서, 셋탑 박스를 통해 헤드-앤드로부터 송신되는 방송 신호를 화면에 표시하는 케이블 방송 수신기에 있어서, 리모콘으로부터 임의의 정보를 수신하는 IR 수신부와, 상기 수신된 정보를 기존 업스트림 케이블 MAC 데이터에 함께 결합하는 케이블 MAC부와, 상기 케이블 MAC부에서 생성된 신호를 암호화하는 암호화부와, 상기 암호화부에서 암호화된 신호를 디지털 변조하는 변환기와, 상기 디지털 변조된 신호를 헤드-앤드(head-end)에서 원하는 주파수로 변환하여 송신하는 튜너를 포함하여 구성되는 데 있다. The present invention is to provide a two-way broadcast method that can induce viewers to actively participate in the broadcast program by eliminating the inconvenience of having to use the phone and the costs incurred in the direct participation of the viewer in the existing broadcast program A cable broadcasting receiver for displaying a broadcast signal transmitted from a head-end through a set-top box on a screen, comprising: an IR receiver for receiving arbitrary information from a remote controller and combining the received information with existing upstream cable MAC data together; A cable MAC unit, an encryption unit for encrypting the signal generated by the cable MAC unit, a converter for digitally modulating the signal encrypted by the encryption unit, and the digitally modulated signal at the head-end. It is configured to include a tuner to convert the frequency to transmit. 양방향성 방송, 오픈 케이블 STB Two-way broadcast, open cable STB

Shearing stress with improved bicycle road for bridge and constructing method thereof

The present invention relates to a bicycle road bridge with enhanced shearing stress and a constructing method thereof and, more specially, related to a bicycle road bridge with enhanced shearing stress, constructing a separate bicycle road bridge distinguished from an existing bridge and integrating a main girder and an upper deck, so as to enhance structural stability and constructability; and a constructing method thereof. According to the present invention, the bicycle road bridge with enhanced shearing stress comprises: a bridge structure including a pile vertically installed on the ground and a coping part horizontally installed in an upper part of the pile; the main girder continuously installed on both upper sides of the coping part in a longitudinal direction of the bridge and having a vertical reinforcement plate protruding in an upper middle part; a cross beam coupling one side thereof to one side surface of the main girder, coupling the other side thereof to the other side surface of a neighboring main girder, and having a plurality of shear reinforcement plates formed in an upper part with constant intervals; a rectangular pipe installed in a guide groove formed between the shear reinforcement plates in a longitudinal direction of the bridge; the upper deck transversely installed in an upper part of the vertical reinforcement plate and the rectangular pipe to form an upper part of the bridge; and a handrail installed on upper both sides of the upper deck in the longitudinal direction of the bridge.

Bridge construction method using strength connector detail and composite curing pannel

PURPOSE: A method for construction of a cross-shaped prestressed concrete girder bridge using a composite form panel and a shear connection member integrated with an inside steel reinforcement of an upper flange is provided to efficiently secure the horizontal joint strength and vertical bending strength of the prestressed concrete girders. CONSTITUTION: A method for construction of a cross-shaped prestressed concrete girder bridge using a composite form panel and a shear connection member integrated with an inside steel reinforcement of an upper flange is as follows. Cross-shaped prestressed concrete girders(100) are installed in a lower structure of a bridge to be adjacent to each other in the horizontal direction, wherein each cross-shaped prestressed concrete girder comprises a lower flange(110), a web(120), an upper flange(130) expanded in the horizontal direction, and a top protruding block(140). A horizontal rigid shear connector(300) is inserted to horizontal connection holes(210) of shear connection members(200) and fastened with a nut between the shear connection members. A composite form panel(500) is installed between the upper flanges. Concrete is placed on the top of the prestressed concrete girders to form a deck.

Single and continuous prestressed concrete girder bridge and the construction method

PURPOSE: A PSC girder bridge with a single-span and multi-span and a construction method thereof are provided to cost-efficiently construct the PSC girder by efficiently arranging tendons. CONSTITUTION: A construction method of a PSC girder bridge with a single-span and multi-span is as follows. A single-span PSC girder or a multi-span PSC girder(B) is manufactured in order to arrange tendons using a sheath. The girder is installed between abutments. A slab is installed on the top of the girder. A third tendon inserted into a sheath is tensed and is anchored using anchorage devices(100).