СПОСОБ ОТЛИВКИ СБОРНЫХ ПРЕДВАРИТЕЛЬНО НАПРЯЖЕННЫХ БЕТОННЫХ ИЗДЕЛИЙ И СООТВЕТСТВУЮЩАЯ УСТАНОВКА

FIELD: construction. SUBSTANCE: group of inventions relates to cast prefabricated prestressed concrete articles, in particular to casting of concrete articles using sliding formwork. More specifically, this invention relates to tensioning prestressed strands during casting. According to the method, the reinforcing strands are subjected to tensioning, by means of the appropriate device, in the bundle on the molding stand before the casting with the sliding formwork. Parameters influencing the tension process are measured during the strands tensioning process. At the same time the design characteristic of the measured parameters influencing the tension process during the strands tension process is set. At that, manifestation and change of said measured parameters is compared to their specified design characteristic during strands tensioning process. Said measured parameters include force applied during strand tensioning, and elongation of reinforcing strand bundle. When specifying the calculated characteristics of said measured parameters, the number and type of reinforcement strands in the bundle are used, and in the process of tensioning the bundle of reinforcement strands, the effect of friction created by combs used for fixture of reinforcement strands is taken into account, and a tension device is calibrated, during which corresponding coefficients are introduced. EFFECT: technical result is higher accuracy of tensioning reinforcement strands, thereby improving quality of cast concrete article. 8 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 714 742 C2 (51) МПК B28B 23/04 (2006.01) E04C 2/06 (2006.01) E04C 5/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B28B 23/043 (2018.08); E04C 2/06 (2018.08); E04C 5/08 (2018.08); E04G 21/12 (2018.08) (21)(22) Заявка: 2015136812, 31.08.2015 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Элематик Ойй (FI) Дата регистрации: 19.02. ...

СПОСОБ ИЗГОТОВЛЕНИЯ СБОРНЫХ АРМИРОВАННЫХ ЦЕМЕНТНЫХ ПАНЕЛЕЙ И ПЛИТ

Способ относится к области строительства, а именно к способам изготовления армированных цементных панелей и плит. Изобретение позволит предотвратить нежелательное испарение воды из раствора в процессе схватывания. Способ изготовления сборных армированных цементных панелей и плит включает формование плит в металлических формах, имеющих средства сопротивления для выдерживания напряжения двухосных элементов армирования, в котором обеспечивают форму, способную принимать вертикальное или горизонтальное положение, образованную двумя параллельными центральными стенками, образующими главные лицевые стороны панели, двумя боковыми стенками, соединяющими стороны центральных стенок и образующих боковые кромки панели, и двумя верхней или передней и нижней или задней торцевыми стенками, соединяющими торцевые кромки центральных стенок и боковых стенок. Параллельные центральные стенки выполнены с криволинейной конфигурацией только в одном из своих измерений. Боковые стенки выполнены прямоугольными и плоскими ...

СПОСОБ ОТЛИВКИ СБОРНЫХ ПРЕДВАРИТЕЛЬНО НАПРЯЖЕННЫХ БЕТОННЫХ ИЗДЕЛИЙ И СООТВЕТСТВУЮЩАЯ УСТАНОВКА

Форма для изготовления предварительно напряженных изделий из бетонных смесей

Изобретение относитс  к производству изделий сборного бетона и железобетона. Позвол ет повысить надежность формы дл  изготовлени  предварительно напр женных изделий из бетонных смесей за счет снабжени  ее фиксаторами положени  упоров 2 дл  напр гаемой арматуры в виде подвижных контактирующих с упорами 2 самотормоз щихс  клиньев 4, св занных посредством т г 6 со свободными плечами двуплечих рычагов 8. Кроме того, поддон 1 снабжен направл ющими плитами 5, контактирующими с основанием самотормоз щихс  клиньев 4. 1 ил. This invention relates to the manufacture of precast concrete and reinforced concrete products. It allows to increase the reliability of the form for the manufacture of prestressed concrete products by supplying with clamps the positions of the stops 2 for the tension reinforcement in the form of movable self-braking wedges 4 in contact with the stops 2, connected by means of the t 6 of the free arms of the double-arm levers 8 In addition, the pallet 1 is provided with guide plates 5 in contact with the base of the self-braking wedges 4. 1 Il.

VORRICHTUNG ZUM SCHNEIDEN VON SPANNBETONERZEUGNISSEN.

Prestressed concrete units and method of manufacture

Improvements in or relating to reinforced concrete elements

... 693,287. Reinforced concrete; slabs. CONCRETE PATENTS, Ltd., and DANHOF, K. R. March 20, 1951, [April 18, 1950], No. 9542/50. Classes 20(iv) and 87(i) A reinforced element, e.g. an apertured slab 1 of low quality concrete comprises one or more reinforcing bars 2 of prestressed high quality concrete, embedded in it with their ends totally enclosed. The bars 2, which may be trapezium, rectangular or triangular cross-section with more than one pretensioned high tensile steel wire 3 providing the stress, may have lateral projections to assist bonding with the low quality concrete cast round them and their ends terminate a short distance from the ends of the slab.

PRODUCTION METHOD AND MEANS FOR CONCRETE ARTICLES

... 1359627 Moulding concerte ties CONCRETE INDUSTRIES (MONIER) Ltd 11 Oct 1972 [27 Oct 1971] 46761/72 Heading B5A Concrete railway sleepers 58 cast with reinforcing wires 21 and rail support inserts 41 in a multi-cavity mould 32 are removed therefrom by inverting the mould 32 about the pivot bar 49 of a frame 48 (see also Fig. 7) releasably holding the mould 32 to rails 10 by pivotal claws 51. The latter allow the mould to slide along the rails 10 when the tension applied to the wires 21 by rams (28, Fig. 3) during moulding is released. The mould 32 may be inverted by a slewing crane (16, Fig. 5) via a cable 56 attached to apertured lugs 55 on the mould 32. During inversion the sleepers 58 are retained within the mould 32 by pins passing through apertures in the inserts 41. The removal of the sleepers 58 may be facilitated by spraying the moulds with oil prior to casting and by shaking and heating the mould 32 after iversion. The sleepers may be collected by a fork-lift truck (60, Fig. 5).

Improvements in the production of pre-stressed reinforced concrete sleepers and similar beams

... 572,388. Moulding pre - stressed reinforced concrete sleepers, beams, &c. DOWSETT ENGINEERING CONSTRUCTION, Ltd., LESTER, D. R., and BARBER, R. S. V. April 12, 1943, No. 5846. [Class 87 (ii)] Reinforcing wires are tensioned above production lines arranged in tiers between walls 12. Pairs of mould tracks 13, 14, 15 project inwardly from each wall and longitudinally on either side of a filling and vibrating station A which includes a concrete-containing hopper 19, a vertically-movable vibratory table 23 and an elevator 35. The hopper; table and elevator run on tracks transversely to the production lines. In operation, wires 18 are tensioned along the production lines and the elevator 35, operated by electric motor 38 and cables 39, raises empty moulds from tier 14 to tier 15. The moulds are then pushed to the right, Fig. 1, on to a platform 30 below the hopper which, discharging through two openings, fills two moulds simultaneously. During filling, the moulds are vibrated by the engagement ...

Improvements in reinforced concrete constructions, and in the manufacture thereof

... 541,835. Reinforced concrete. ABELES, P. W. May 6, 1940, No. 8080. [Class 20 (iv)] A reinforced concrete beam 1 is provided with longitudinal members 3 of high tensile steel, and tensioned thin wires 2, both in the tensile zone. Additional members 4 may be provided in the compression zone to take up the counter-bending moment produced by the pre-tensioned members 2. If the beam is to be subjected to bending in more than one direction, additional members 2, 3 may be provided accordingly, so that the bending moments produced by the wires 2 are balanced and only pressure stresses are set up in the concrete. The tension in the wires is such that when calculated as a homogeneous material the resultant tensile stress when under load is in excess of the tensile strength of the concrete. Fig. 11, e and f shows the deflection of the beam before and after loading. To apply tension to the wires, two or more beams 10 are arranged on either side of a spacing member 13 either in a mould or in situ, the ...

Improvements in the manufacture of reinforced concrete elements

... 673,015. Prestressed concrete. SCHROEDER, W., and BOENNINGHAUS, R. Dec. 3, 1949 [Oct. 1,.1948), No. 31118/49. Class 20(iv). Prestressed concrete elements, e.g. slabs, props, beams, joists, columns, box girders, piles, railway sleepers, are made continuously in a train of moulds 7, each mould being placed, in succession, around tht wires 15 at A and connected, e.g. by hooks, to the next forward mould, so that the moulds pass over the roller way 6 to' a concrete charger 9, a vibrator 10 and a heating tunnel 11 in which the concrete sets. The traction on the wires is applied by an opposed pair of belts 13 which grip opposite faces of a concrete member from which the mould has been stripped at B, the bond of the wires and concrete being sufficient for this purpose. The wires between concrete members are then severed. The moulds are returned to position A by a conveyer 8. The wires 15, single or stranded, are supplied from superposed narrow drums on a frame 1, and pass over guides 2 through ...

Moulding reinforced concrete articles

Equipment for the production of pre-stressed concrete beams or railway sleepers includes two, spaced, reinforcement-tensioning, abutment assemblies with a casting bed lying between the assemblies. Mobile moulds can be moved into and out of the casting bed through one of the abutment assemblies and the latter includes a plurality of displaceable arms carrying reinforcement clamping means. Each arm is displaceable to allow passage of the moulds when the latter are filled with at least partially cured pre-stressed concrete articles. A mould train can be removed as a whole with cured articles therein and individual articles formed by severing the tensioning reinforcing bars or wires and the finished articles subsequently demoulded at a site remote from the casting bed.

Method of forming a prefabricated block

Improvements in the production of pre-stressed reinforced concrete sleepers

... 567,003. Making rods for reinforcing concrete. DOWSETT ENGINEERING CONSTRUCTION, Ltd., and LESTER, D. R. April 12, 1943, No. 5848. [Class 83 (ii)] [Also in Group X] Pre - stressed reinforcement for concrete sleepers consists of wire rods which are transversely distorted into a series of short lengths of flattened oblong section, with alternate flats at right angles. The wire, after drawing, is passed in stages through a press comprising two or more pairs of dies with their lines of pressure at right angles. Alternatively, the wire may be fed continuously through rotary dies. The distorting operation may be effected after a straightening operation. Specifications 4632/98, 7516/08 [both in Class 20], 1816/11, 338,864, [both in Class 20 (iv)], 364,621 and 393,576, [both in Group V], are referred to. The Provisional Specification refers also to the use of wires of triangular or rectangular section, helically twisted.

Improvements in or relating to a prestressing reinforcing device for concrete

... 552,873. Reinforced concrete. SCHORER, H. June 1, 1942, No. 7383. Convention date, Aug. 14, 1941. [Class 20 (iv)] Reinforcing wires 13 are held at each end during tensioning by an annular clamping device comprising radial wedge-shaped members 1 with grooves 2 receiving the ends of the wires, the members having inclined outer surfaces engaged by conical rings 8, which by longitudinal movement press against the wedge-shaped members forcing them together against the pressure of compression spacing springs 3. A central compression tube 14 abuts at one end against a screwed plug 25 in the sliding sleeve 91 around one of the clamping devices, and at the other end against a member 16 taking the reaction of the stressing force applied to the wires through a sliding sleeve 9 on the other clamping device by a screwed plunger 15 or by a hydraulic ram. The wires are spaced by discs 20 with edge recess receiving the wires. The compression tube is perforated and is surrounded by a filter fabric ...

METHOD OF PRERSTRESSING AND CONSTRUCTION OF CONCRETE COMPOSITE SECTION

Improvements in and relating to a method of producing concrete building elements reinforced with steel wires

... 815,438. Reinforced concrete. POLSKA AKADEMIA NAUK INSTYTUT PODSTAWOWYCH PROBLEMOW TECHNIKI. Aug. 22, 1956, No. 25697/56. Class 20(4) To form prestressed ceiling beams or railway sleepers, continuously re-used moulds 8 mounted on an endless band 9 and traversed by tensioned steel wires 2 travelling therewith pass through a filling station 7, a vibrating and de-aerating station 11 and an initial hot air setting station 12, finally delivering their partially hardened contents 3 supported by the wires 2 to rollers which pass them through a final hot air setting station 13 and they then pass to a station 14 where they are separated and delivered to store on a conveyer 15. The wires 2 are supplied from drums 1 through a braking means 6 and a spacer comb 4 and are tensioned by a series of motor-driven rolls 5 gripping the members 3 or by chain-operated grippers engaging the wires 2.

VERFAHREN ZUR HERSTELLUNG VON VORGESPANNTEN BETONFERTIGTEILEN

PROCEDURE FOR THE PRODUCTION OF LINKED UP PRECAST CONCRETE PARTS

FINISHED UNIT CEILING COMPONENT

PROCEDURE, SELF-SUPPORTING SCHALWAENDE AND INSTALLATIONS FUER THE IMPROVEMENT OF THE APPROPRIATENESS OF THE PROCEDURES FOR THE PRODUCTION OF PRECAST PRESTRESSED CONCRETE MEMBERS.

Procedure for the production of a pair of preformed carriers

A PROCESS FOR FORMING FERROCEMENT PRODUCTS

PRESTRESSED LONG CONCRETE MEMBERS IN MULTIPLE FORMS

PRODUCTION METHOD AND MEANS FOR CONCRETE ARTICLES

MOULDING REINFORCED CONCRETE ARTICLES

Equipment for the production of pre-stressed concrete beams or railway sleepers includes two, spaced, reinforcement-tensioning, abutment assemblies with a casting bed lying between the assemblies. Mobile moulds can be moved into and out of the casting bed through one or the abutment assemblies and the latter includes a plurality of displaceable arms carrying reinforcement clamping means. each arm is displaceable to allow passage of the moulds when the latter are filled with at least partially cured pre-stressed concrete articles. A mould train can be removed as a whole with cured articles therein and individual articles formed by severing the tensioning reiniorcing bars or wires and the finished articles subsequently demoulded at a site remote from the casting bed.

PROCESS AND APPARATUS FOR CONTINUOUSLY PRESTRESSING CONCRETE PRODUCTS

A method and apparatus for prestressing reinforcing tendons in concrete products manufactured in separable moulds in a production line where the reinforcing tendons are continuous, comprising the steps of prestressing the tendons within a first product mould, moulding a product in the first mould, introducing a subsequent mould in series with the first mould, and prestressing the reinforcing tendons between at least one point at the head of the production line and the previously moulded product in which stress transfer between the reinforcing tendons and the product has taken place.

METHOD FOR PRODUCING A TEXTILE-REINFORCED CONSTRUCTION MATERIAL COMPONENT, AND TENSIONING DEVICE FOR SAME

The invention relates to a method for producing a three-dimensional construction material component (20) which preferably has at least one surface curved in a concave and/or convex manner. A plurality of spacers (32) are arranged in a formwork (30). A textile reinforcement (21) is supported on the spacers (32), such that the textile reinforcement (21) has a defined position within a formwork interior (30a) of the formwork (30). A tensile force (FZ) is applied via a tensioning device (40) to the textile reinforcement (21) in at least one tension direction (Z) or in a plurality of directions (Z). Construction material (B) is introduced into the formwork interior (30a) of the formwork (30) and surrounds the textile reinforcement (21). The construction material (B) is then hardened, wherein the tensile force (FZ) is maintained during the hardening. During this process, the spacers (32) are integrated into the construction material component (20). The tensioning device (40) has at least one ...

AN APPARATUS AND METHOD TO MANUFACTURE CAST PANELS

A method and assembly (20) to form a cast concrete panel (21). The assembly (20) has end beams between which tendons (23) can pass. The beams need to be able to support tensioning of the tendons. Transversely extending form members (25) cooperate with form members (27) to enclose a space to receive concrete to form the panel (21). The tendons (23) pass through the space.

Verfahren zur Herstellung von bewehrtem Beton.

Verfahren zur Herstellung von mit vorgespannter Drahtbewehrung versehenen Betonkörpern und nach dem Verfahren hergestellter Betonkörper.

Verfahren zur Herstellung von vorgespannten Betonkörpern.

Verfahren zur Herstellung von Stahldraht für vorgespannte Einlagen in Stahlbeton, insbesondere Stahlsaitenbeton.

Einrichtung zum Herstellen armierter Betonware.

Formkasten für Gegenstände aus armiertem Beton mit vorgespannten Armierungseisen.

Procédé de moulage de pièces profilées en béton et dispositif pour la mise en oeuvre de ce procédé.

Armierung zum Vorspannen von Beton.

Verfahren zur Herstellung von armierten Körpern aus Leichtbeton und Vorrichtung zur Ausübung des Verfahrens

Procédé pour l'obtention de béton armé précontraint, et béton armé précontraint obtenu au moyen du procédé.

Bewehrungseinheit für Betonkörper, mit biegsamen Bewehrungselementen und mit Spannvorrichtung für diese letzteren.

Procedimento per la fabbricazione da impasti cementizi fibrosi di pezzi, dispositivo per realizzare tale procedimento e pezzo fabbricato con tale procedimento.

Verfahren zur Herstellung von vorgespannten Bauelementen sowie Vorrichtung zur Durchführung des Verfahrens.

Verfahren zur Herstellung vorgespannter Spannbetonbauteile im Spannbett

Dispositif de mise sous tension d'une armature tubulaire pour béton armé

Verfahren zur Herstellung eines Bauelementes aus Beton

Verfahren und Vorrichtung zum Fertigen von Spannbeton-U-Platten für grosse Spannweiten

Bauelement, insbesondere für den Kanal- und Tunnelbau

Procédé pour la fabrication d'une paire de poutres préfléchies et installation pour la mise en oeuvre de ce procédé

Method and device for manufacturing prefabricated parts made of prestressed concrete with immediate bonding, in particular of prestressed concrete sleepers

Method of making a prestressed concrete workpiece by an armature biased concrete workpiece and by a reinforcement.

Das erfindungsgemässe Verfahren zum Herstellen eines vorgespannten Betonwerkstücks ist dadurch gekennzeichnet, dass die Vorspannung durch eine Wärmebehandlung erzeugt wird, wobei der Beton und die Bewehrung dafür derart ausgewählt werden, dass bei einer Abkühlung des Betonwerkstücks aus einer erhöhten Temperatur der Wärmeausdehnungskoeffizient des Betons kleiner ist als derjenige der Bewehrung, und dass während der Abkühlung der Beton und die Bewehrung genügend stark aneinanderhaften, wenn der Beton während der Abkühlung wenigstens so weit hydratisiert ist, um die Bewehrung auf Grund der unterschiedlichen Wärmedehnungskoeffizienten dehnen zu können, und dass der Beton mit der Bewehrung derart auf die erhöhte Temperatur gebracht und während der Abkühlung wenigstens so weit hydratisiert wird, dass er nach der Abkühlung durch die Bewehrung vorgespannt ist.

Method and device for manufacturing a prestressed concrete element.

Die Erfindung betrifft ein verfahren zur Herstellung eines zumindest in eine Spannrichtung (S) vorgespannten Betonelements, wobei zumindest eine Armierung zwischen einer Rückhalteeinheit (2) und einer davon in Transportrichtung (T) stromabwärts angeordneten Zugeinheit (4) in einer Wanne (11) eingespannt und mit einer Zugspannung beaufschlagt wird, wobei die Wanne (11) einen Boden umfasst, die Armierung vom Boden beabstandet und parallel dazu positioniert ist, und die Armierung zwischen Zugeinheit (4) und Rückhalteeinheit (2) durch Zugabe einer Mischung aus Zement und Zuschlag zumindest teilweise einbetoniert und anschliessend zu einem Element ausgehärtet wird, wobei die bezüglich der Transportrichtung (T) vordere Abgrenzung der Wanne (11) durch einen bereits zumindest teilweise ausgehärteten Bereich des Elements oder eines Vorlaufelements gleicher Dicke gebildet wird und die Zugeinheit (4) Zugmittel umfasst die in dem zumindest teilweise ausgehärteten Bereich des Elements oder des Vorlaufelements ...

METHOD, DEVICES, STRUCTURES CARRYING MOULDS AND INSTALLATIONS FOR the IMPROVEMENT OF the EFFECTIVENESS the PROCESSES FOR MANUFACTURE the PRESTRESSED CONCRETE PRODUCTS

Manufactoring process of boards, slats, spacers and cross-pieces armed out of cement and other matters with catch

Manufactoring process of sheets corrugated out of armed asbestos cement

Process of setting in tension of the reinforcements of pipes and other parts out of reinforced concrete or material similar and produced while resulting

PIVOTING-TOOTH COMB-FORM FORMWORK FOR SEWERS OF REINFORCED CONCRETE BEAMS HAVING VERTICALLY-DISCONNECTABLE ENDS WHICH CAN BE DISPLACED VERTICALLY

IMPROVED MOLD RELEASE AND HANDLING PRODUCTS-CAST CONCRETE STATIONARY MOLDS

Proceeded for the manufacture of bodies made up in an elastic state of coercion, more particularly of structural components out of concrete precompresses

METHOD AND INSTALLATION FOR PRODUCING CONCRETE SLABS

Module indépendant de fabrication de béton précontraint et son procédé de mise en ùoeuvre.

Module de fabrication de produits plats ou allongés en béton précontraint, du type comportant soit un plateau,soit une série de moules juxtaposés parallèlement les uns des autres, dans lesquels sont disposés au moins un fil d'acier ancré dans deux chevêtres, caractérisé en ce qu'il comporte un cadre rigide constitué de deux longerons (2) parallèles entre lesquels sont disposés les moules (3), et des deux chevêtres, l'un (5) fixe, monté à une extrémité (7) des longerons, l'autre (6) mobile, relié à chaque longeron par un vérin (9) de mise sous tension.

PROCEDE DE FABRICATION DE PLAQUES EN BETON POUR DALLES UNIVERSELLES

LE NOUVEAU PROCEDE COMPORTE: -L'APPLICATION D'EFFORTS DE FLEXION P SUR UNE ARMATURE 1 PREALABLEMENT CONSTITUEE EN ARC, DE MANIERE A UTILISER LA RIGIDITE A LA FLEXION DE CETTE ARMATURE POUR Y ENGENDRER UNE PRECONTRAINTE DANS SON ETAT D'APLATISSEMENT; -LA COULEE DU BETON 4 DANS UN CADRE 3 ASSOCIE A L'ARMATURE; ET -LA SUPPRESSION DES EFFORTS P LORSQUE LA PRISE DU BETON EST SUFFISANTE.

Process and equipment for the manufacture of structural components out of prestressed concrete

DEVICE IMPROVES RELEASE FROM THE MOULD AND OF HANDLING OF THE CONCRETE PRODUCTS RUN OUT OF FIXED MOULDS

Prefabricated element, in particular for the channel and tunnel construction and procedure for the production of the element

Process and equipment for the manufacture of structural components out of prestressed concrete

A method of manufacturing prestressed concrete girder and beams obtained by the method

Procédé de fabrication de poutres en béton précontraint, dans lequel on dépose dans le coffrage une pluralité d'étriers transversaux ouverts à leur partie supérieure, des entretoises de mise à hauteur des armatures, on met sous tension les armatures, préalablement tirées dans le coffrage à l'intérieur des ouvertures des étriers, coupées et clavetées, on dépose une pluralité de peignes portant des profilés de répartition des armatures, on coule le béton dans le coffrage et on le vibre au moyen d'aiguilles vibrantes introduites dans les ouvertures des étriers.

Mould for prestressed reinforced concrete elements

Process and equipment for the manufacture of prestressed reinforced concrete elements

A METHOD AND APPARATUS OF CURING CONCRETE STRUCTURES

L'invention concerne un procédé permettant de réguler le durcissement de structures en béton au moyen d'une chaleur intralaminaire générée par l'application d'énergie électrique sur des éléments conducteurs disposés dans les structures. Ces éléments conducteurs comprennent des fibres de carbone. Ce procédé utilise également les éléments conducteurs en tant que renfort intérieur dans la structure durcie et finie afin de réduire ou d'éviter le recours à l'acier de renfort. Les éléments conducteurs se présentent sous différentes formes, notamment des formes pliables imprégnées d'une matrice de résine polymère pouvant être rigidifiée et des formes complètement rigidifiées. L'invention peut être utilisée conjointement avec des agents sensibles à la chaleur afin d'activer le durcissement. Un mode de réalisation préféré du procédé selon l'invention est un durcissement régulé (accéléré ou activé à chaud) d'une structure en béton. L'invention concerne également des structures en béton qui présentent ...

PRODUCTION OF PRESTRESSED CONCRETE

Method of manufacturing prestressed concrete culverts

A method of manufacturing a three-sided culvert includes prestressing tendons in the culvert form. A series of prestressing tendons are secured within a form adapted for casting a concrete culvert having three orthogonal sides. The prestressing tendons are utilized in the top slab of the three-sided culvert and are positioned within the form prior to the pouring of concrete therein. Reinforcing steel can be eliminated along with the costs associated therewith and a culvert configuration can be provided with enhanced strength and improved material properties. Such culverts may thus be provided in modular form for placement upon foundations at remote locations for the creation of bridges, drainage areas and the like.

A form for casting concrete

... 976,308. Moulding concrete panels. C. I. WILLIAMS. April 5, 1962 [April 13, 1961], No. 13114/62. Heading B5A. [Also in Division E1] A plurality of forms for casting concrete are made together from a cast material, e.g. concrete in a mould 30 which is divided into elements by removable separator plates 34. Tensioned reinforcing rods 39, 40 are incorporated in the mould and pass through apertures in the separator plates 34 which are arranged so that, on removal of the plates 34 when the concrete has set, the reinforcing rods can be cut by the cutters 37. The forms are joined together in use by means of a spider 27 as shown in Fig. 1. Vertical rods (not shown) in the mould form notches at the corners of the panels which provide apertures for the bolts 26 to pass through.

PRODUCTION OF PRESTRESSED CONCRETE

... 1330636 Moulding prestressed concrete FLOWCRETE Ltd 22 Sept 1970 [30 Sept 1969] 47975/69 Heading B5A In an apparatus for continuous production of prestressed concrete, fluent concrete is fed on to a moulding conveyer 10 from a casting unit 29, the conveyer drive drum 28 being operated synchronously with a pretensioned wire feed drum 37 so that pretensioned wires 31 are fed at the same linear speed as the conveyer 10. The speed of the conveyer may be regulated to ensure that the concrete product 20 has set by the time it reaches a predetermined position with respect to an output location on the conveyer. To form the product 20, a crosshead 33 (Fig. 1) is initially used by means of which a closed loop of pretensioned wire is obtained, passing from reels 32, along the outside conveyer to pulleys 35, back under the conveyer, on to the feeding drum 37 through a guide 36, and from there to the crosshead 33, the wires being tensioned by means of hydraulic jacks 39. A length of concrete is then ...

An improved reinforcement for prestressing concrete and process of manufacturing prestressed concrete with it

... 696,938. Reinforced concrete. BAKKER, J. Jan. 30, 1952 [Dec. 13, 1951], No. 2432/52. Class 20(iv) Reinforcement for prestressing concrete consisting of a part subjected to adhesion of the concrete and brought under tensile stress, and a part insulated against adhesion of the concrete and brought under compressive stress, which parts are mutually connected in a disconnectable manner at the ends, so that after embedding the reinforcement in the concrete and the setting of the concrete, this latter can be prestressed by the part under tensile stress by disconnecting the connection between the two parts, is characterized in that the two parts, of which at least one is subdivided into two or more elements, are mutually connected in an axially displaceable manner and lie, alternating in a definite sequence, with their axes in a single flat plane or symmetrically with respect to a single flat plane, besides one another. Several forms are described; in that shown in Fig. 1 for example, the compressive ...

Apparatus for manufacturing reinforcement for concrete building elements

... 851,140. Slat and lath fabrics. INTERNATIONELLA SIPOREX A. B. May 6, 1959 [May 7, 1958], No. 15473/59. Class 45. In an apparatus for the manufacture of fabrics composed of wooden ribs 6 and metal rods 4, the rods are driven through the ribs and form their own holes. The apparatus comprises a table 1 on which are mounted two parallel rollers 2 driven by a motor 3. The rolls are grooved to take the rods and drive them towards a stop 7. The wooden ribs 6 are supported by holders 5 each comprising two angle brackets 10 and 11 which have slots 101 and 111 to allow the passage of the rods. In front of each ribholder is a guide 8, which is divided in a vertical plane so that the formed mat can be removed upwards when the halves of the guide are separated. A magazine 12 under each ribholder 5 contains a supply of ribs which are pushed into position by a feed mechanism 13. The mechanism is linked to a roller 16 which opens the guide 8 and is also linked to an ejector device comprising ...

A METHOD OF CONSTRUCTING A SKID FOR HEAVY PLANT OR MACHINERY

LOAD SUPPORTING STRUCTURES HAVING A CASTABLE CORE

... 1,213,548. Piles. RAYMOND INTERNATIONAL Inc. 17 Dec., 1968 [23 Feb., 1968], No. 59962/68. Heading E1H. A pile is formed by providing a tubular jacket or shell 12 (e.g. of steel), pouring a wet concrete mix including an expansive additive (e.g. calcium sulfoaluminate) into the shell and allowing the mix to cure therein and expand against the shell thus forming a core 14 upon which the jacket exerts an inwardly directed pressure thereby increasing the strength of the core material in an axial direction.

Production of pre-stressed concrete sleepers and similar beams

... 572,391. Moulding pre stressed reinforced concrete sleepers. DOWSETT ENGINEERING CONSTRUCTION, Ltd., BARBER, R. S. V., and LESTER, D. R. July 26, 1943, No. 12154. [Class 87-(ii)] In a method for the production of concrete sleepers having tensioned reinforcing wires therein, the wires being arranged parallel to each other in production lines, the supply of clean empty moulds to the production lines and the discharge of full moulds containing hardened' sleepers (or of empty moulds and sleepers separately) are effected by means of transversely-disposed conveyers or runways. Fig. 1 is a plan view of a plant lay-out comprising four production lines PL in two pairs, the reinforcing wires 18 being stretched between pedestals (not shown) at the ends of the production lines. Clean empty moulds are introduced along a transverse track 19, and the full moulds are discharged along a second transverse track 26, both tracks being disposed below the production lines. Fig. 4 shows a device for shutting ...

Improvements in Lintels

... 1,181,226. Moulding concrete. CHESHIRE FERROCONCRETE Ltd. 1 June, 1967 [16 Aug., 1966], No. 36570/66. Heading B5A. [Also in Divisions E1 and E2] Prestressed concrete lintels, Fig. 1, with weather grooves, are produced in longitudinal moulds 10, Fig. 2, having groove producing ribs 13. Cables 15 extend longitudinally of the mould between tensioning means 16 and 17 and through hollow partitions 19 which divide the mould into lengths and permit cable cutting e.g. by a blow torch.

MOULDING REINFORCED CONCRETE ARTICLES

Prestressed concrete castings

... 906,566. Reinforced concrete slabs. MARSH, A. F. Jan. 19, 1960 [Jan. 19, 1959], No. 1982/60. Class 87 (1). [Also in Group V] A concrete panel has reinforcing wires W1 which are prestressed to exert an inwardlydirected pressure on the concrete. Additional diagonally-arranged wires W5, W6 may be provided. Brackets 32 which support the wires during moulding are left in the concrete to transmit stress. Securing bolts S may be threaded to the brackets 32.

Procedure for the production of reinforced concrete bodies.

COMPOUND, LINKED UP CONSTRUCTION UNIT AND PROCEDURE FOR ITS PRODUCTION.

APPARATUS AND METHOD FOR MAKING PRESTRESSED CONCRETE PRODUCTS

METHODS, DEVICES, MOLD-BEARING STRUCTURES AND INSTALLATIONS FOR IMPROVING THE EFFECTIVENESS OF PROCESSES FOR THE MANUFACTURE OF PRESTRESSED CONCRETE PRODUCTS Some self-supporting screens for closing the mold head, some self-supporting separating screens, group positioning devices and group tensioning devices, are used. A series of novel installations for the shock heat treatment, stripping and removal of the products enables by combination with the foregoing means, improvement with respect to known processes, on the one hand of the manufacturing process and on the other hand enables stripping to be brought forward.

INSULATED CONCRETE PANEL BILLETS

REINFORCED ADDITIVE MANUFACTURING PROCESS FOR THE MANUFACTURE OF COMPOSITE MATERIALS

An additive manufacturing process for the manufacture of a body from composite materials, including the steps of: providing a support structure against which the composite material is to be formed; installing a reinforcing material adjacent the support structure; and progressively applying a matrix material to the support structure to cover the reinforcing material, the matrix material being applied from a nozzle movable relative to the support structure.

A METHOD FOR THE MANUFACTURE OF PREFABRICATED REINFORCED MORTAR PANELS AND SLABS

Method for manufacturing prefabricated reinforced-mortar panels and slabs, essentially consisting of a method which uses metal moulds which have resistant means for withstanding the reinforcing tension along two axes. According to the method a mould (3) is provided, said mould being formed by two central parallel walls (2, 5) which form the larger sides of the panel, two side walls (9), which connect the sides of the central walls (2, 5) and form the side edges of the panel, and two end walls, which connect the end edges of the central walls (2, 5) and side walls (9) and form the end edges of the panel. A tensioned reinforcement (7, 8) is arranged along two axes between the side walls (9) and the end walls. Finally the mortar is introduced through a passable space provided in one of the central walls (2, 5), side walls (9) and/or end walls.

VERSION OF REALISATION STEEL BEAM WITH ENHANCED LOWER END OF

TOGETHER OF MOULDING Of PRESTRESSED, IN PARTICULAR OF CROSS-PIECES, AND MANUFACTORING PROCESS REINFORCED CONCRETE ELEMENTS OF THESE ELEMENTS

Process for the manufacture of continuous reinforced concrete parts in broken lines, in particular of prestressed concrete parts

Mobile, general-purpose prestressing bed with adjustable head

Prefabricated element, in particular for the channel and tunnel construction and procedure for the production of the element

APPARATUS FOR MANUFACTURING A PAIR OF PREBENT GIRDER

Process of setting in tension of the reinforced concrete reinforcements

Improvements brought to the processes and devices to obtain elements and constructions out of concrete

MOLD DEVICE FOR MOLDING A WAFFLE SLAB AND METHOD OF MANUFACTURING A WAFFLE SLAB HAVING CHAMFERS

The present disclosure is related to a mold device for molding a waffle slab, wherein a plurality of connecting structures made of steel bars protrude from the sides of the waffle slab, the mold device comprising: a plurality of steel molds provided at both sides of each of the plurality of connecting structures and surrounding the waffle slab, each of the plurality of steel molds having a top surface, which has a hole therein; a plurality of auxiliary devices respectively disposed at the sides of the waffle slab and having through holes corresponding to holes in the plurality of steel molds; and a plurality of fasteners; wherein the plurality of fasteners respectively pass through the through holes of the plurality of auxiliary devices and are fixed into the holes of the plurality of steel molds so that each of the plurality of auxiliary device transversely connects the top surfaces of the plurality of steel molds. 2. The construction structure of claim 1 , wherein each of the plurality of auxiliary devices comprises an inclined surface facing the waffle slab claim 1 , the inclined surface extending inwardly from an edge of the top of an auxiliary device to an edge of the bottom of the auxiliary device for forming a chamfer on a corresponding corner of the waffle slab.3. The construction structure of claim 2 , wherein each of the plurality of auxiliary devices comprises a first flat upper surface adjacent to the waffle slab claim 2 , the first flat upper surface and the inclined surface forming an angle of about 45 degrees.4. The construction structure of claim 3 , wherein the first flat upper surface of each of the plurality of auxiliary devices is substantially flush with the top of the waffle slab.5. The construction structure of claim 4 , wherein each of the plurality of auxiliary devices includes a second flat upper surface that is more distant from the waffle slab than the first flat upper surface claim 4 , the second flat upper surface being next to the ...

Dual direction pre-stressed pre-tensioned precast concrete slabs and process for same

A precast roadway slab is pre-tensioned longitudinally and transversely, and may also be post-tensioned. A casting bed has the capability of permitting pre-tensioning of a concrete cast to be carried out within the casting bed in both the longitudinal direction and in the transverse direction. Slots are provided at regular intervals within the side walls and jacking heads of the casting bed for tensioning wires to pass therethrough for pre-tensioning. The process utilizes a multilayer grid of pre-tensioning wires disposed within the casting bed, prior to pouring of the concrete. The cast concrete product can also be made with optional tubular ducts, laid parallel to the longitudinal wires, for post-tensioning subsequent to the cast of the concrete. The post-tensioning of the hardened cast, if called for, takes place at the job site.

Compact anchor for post-tensioned concrete segment

An anchor assembly for a post-tensioning tendon may include a compact anchor and wedge. The compact anchor may include a wedge extension having a frustoconical inner surface. The frustoconical inner surface may have a diameter of 0.95 inches or less. The compact wedge may have a length of 1.1 inches or less. The compact anchor and compact wedge may be formed from steel having no added lead. The compact anchor and wedge may be formed by cold heading.

Cement mortar panel with prestressed biaxial reinforcement

This cement mortar panel with prestressed biaxial reinforcement is formed by a slab of cement mortar which, having a thickness ranging from 2 to 7 cms, includes a biaxial reinforcement. The slab has occluded in the cement plugs for versatile operating on the panel assembly allowing for its handling and/or fixation to a building structure via a plurality of panel fixing members. Each panel fixing member has a first end inserted in an axial blind hole of said plugs and a second opposite end which passes through a polygonal plate associated with positioning members configured to enable adjustment of a distance between the panel and the building structure. The building structure further comprises transverse sections having a portion thereof forming an upwardly open cannel-shaped cradle configured to receive one edge of the polygonal plate.

SELF-STRESSING SHAPE MEMORY ALLOY-FIBER REINFORCED POLYMER PATCH

A self-stressing shape memory alloy (SMA)/fiber reinforced polymer (FRP) composite patch is disclosed that can be used to repair cracked steel members or other civil infrastructures. Prestressed carbon FRP (CFRP) patches have emerged as a promising alternative to traditional methods of repair. However, prestressing these patches typically requires heavy and complex fixtures, which is impractical in many applications. This disclosure describes a new approach in which the prestressing force is applied by restraining the shape memory effect of nickel titanium niobium alloy (NiTiNb) SMA wires. The wires are subsequently embedded in an FRP overlay patch. This method overcomes the practical challenges associated with conventional prestressing. 1. A self-stressing composite patch for repair of damage to a structural element , comprising:one or more wires comprising a prestrained shape memory alloy (SMA), wherein the wires have terminal ends; andtabs comprising fiber reinforced polymer (FRP) located on the terminal ends of the wires, wherein the terminal ends of the wires are embedded in the tabs over a terminal embedment length, and wherein a central portion of the wires is not embedded in the tabs.2. The self-stressing composite patch of claim 1 , further comprising a fiber reinforced polymer (FRP) overlay patch having a size designed to completely overlay the wires and the tabs after placement on the structural element.3. The self-stressing composite patch of claim 2 , wherein the fiber reinforced polymer (FRP) of the overlay patch comprises carbon fibers embedded in an epoxy-based saturating resin.4. The self-stressing composite patch of claim 2 , wherein the fiber reinforced polymer (FRP) of the overlay patch is carbon fiber reinforced polymer (CFRP) claim 2 , glass fiber reinforced polymer (GFRP) claim 2 , aramid fiber reinforced polymer (AFRP) claim 2 , steel fiber reinforced polymer (SFRP) claim 2 , or basalt fiber reinforced polymer (BFRP).5. The self-stressing ...

POCKET CAP FOR POST-TENSIONED CONCRETE MEMBER

A system for post tensioning a concrete member is disclosed. The system may include an anchor body, and a strand, the strand inserted through the anchor body. The strand may have a strand end and an outer diameter. The system may also include a pocket cap, the pocket cap positioned around the strand. The pocket cap may have a cylindrical interior wall, the cylindrical interior wall having a pocket cap diameter corresponding to the outer diameter of the strand. 1. A system for post tensioning a concrete member comprising:an anchor body;a strand, the strand inserted through the anchor body, the strand having a strand end and an outer diameter;a pocket cap, the pocket cap positioned around the strand, the pocket cap having a cylindrical interior wall.2. The system of claim 1 , wherein the strand passes through the pocket cap.3. The system of claim 2 , wherein cylindrical interior wall terminates in an end flange.4. The system of further comprising one or more seals positioned between the cylindrical interior wall and the strand.5. The system of claim 2 , wherein the pocket cap comprises extensions.6. The system of claim 1 , wherein the pocket cap contains grease.7. The system of claim 1 , wherein the pocket cap encloses the strand end.8. The system of claim 7 , wherein the pocket cap comprises a cap end wall claim 7 , the cap end wall containing grease.9. The system of further comprising a gasket claim 8 , the gasket compressed between the anchor body and the pocket cap.10. A method of forming a post-tensioned concrete member comprising:positioning a post-tensioning tendon within a concrete form, the post-tensioning tendon including a tension member, fixed anchor, and a stressing end anchor, the tension member including a strand;positioning a pocket former between the stressing end anchor and the concrete form, the pocket former coupled to the stressing end anchor, the stressing end anchor having a stressing end anchor body;pouring concrete into the concrete form ...

Pre-Stressed Box Culvert and Methods for Assembly Thereof

A pre-stressed concrete box culvert includes a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall. The first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, and the first and the second sidewalls each include a free end that has at least one male or female connector. The pre-stressed concrete box culvert includes a three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall. The third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, and the third and the fourth sidewalls each include a free end that has at least one male or female connector to mate with the at least one corresponding male or female connector arranged at one of the respective free ends of the first and the second sidewalls. 1. A pre-stressed concrete box culvert comprising:a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall, wherein the first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, and wherein the first and the second sidewalls each include a free end that has at least one male or female connector; anda three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall, wherein the third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, and wherein the third and the fourth sidewalls each include a free end that has at least one male or female connector arranged to mate with the at least one corresponding male or female connector at one of the respective free ends of the first and the second sidewalls.2. The pre-stressed concrete box culvert of claim 1 , wherein the three-sided culvert top section is positioned atop the three-sided culvert bottom section such that the top slab is arranged opposite the bottom ...

Method and apparatus for casting prefabricated prestressed concrete products

A method and an apparatus for casting prefabricated prestressed concrete products with a substantially horizontal slipform casting process, in which method reinforcement strands are stressed in a bundle on a casting bed before the slipform casting is started, wherein the expected behavior of at least one measurable variable affecting the strand stressing process during the strand stressing process is predetermined, and the behavior of the at least one measurable variable is measured and compared to its predetermined expected behavior during the strand stressing process.

DUAL DIRECTION PRE-STRESSED PRE-TENSIONED PRECAST CONCRETE SLABS AND PROCESS FOR SAME

A precast roadway slab is pre-tensioned longitudinally and transversely, and may also be post-tensioned. A casting bed has the capability of permitting pre-tensioning of a concrete cast to be carried out within the casting bed in both the longitudinal direction and in the transverse direction. Slots are provided at regular intervals within the side walls and jacking heads of the casting bed for tensioning wires to pass therethrough for pre-tensioning. The process utilizes a multilayer grid of pre-tensioning wires disposed within the casting bed, prior to pouring of the concrete. The cast concrete product can also be made with optional tubular ducts, laid parallel to the longitudinal wires, for post-tensioning subsequent to the cast of the concrete. The post-tensioning of the hardened cast, if called for, takes place at the job site. 1. A process for preparing a dual direction prestressed pretensioned slab of concrete which comprises:(A) creating a casting bed having a base, spaced aligned side walls, and steel jacking heads all of which are upstanding from said base, wherein each side wall and each jacking head has spaced ports therethrough along the length thereof, which spaced ports are aligned both elevationally and by distance between adjacent ports on each of the two side walls;(B) laying out a series of spaced pre-stressing longitudinal wires along the length of the casting bed, of a length that exceeds the length of the cast to be made, with the termini of said wires to be accessible for stressing prior to a cast;(C) laying out a series of spaced pre-stressing wires transversely at uniform intervals along the length of the cast to be made and disposed above, below or above and below the longitudinal wires, the termini of each transverse wire extending through the slots of the two respective side walls of said casting bed;(D) laying out a series of spaced elongated tubes at the same elevation as the longitudinal wires for the future reception of post ...

MOLD DEVICE FOR MOLDING A WAFFLE SLAB AND METHOD OF MANUFACTURING A WAFFLE SLAB HAVING CHAMFERS

The present disclosure is related to a mold device for molding a waffle slab, wherein a plurality of connecting structures made of steel bars protrude from the sides of the waffle slab, the mold device comprising: a plurality of steel molds provided at both sides of each of the plurality of connecting structures and surrounding the waffle slab, each of the plurality of steel molds having a top surface, which has a hole therein; a plurality of auxiliary devices respectively disposed at the sides of the waffle slab and having through holes corresponding to holes in the plurality of steel molds; and a plurality of fasteners; wherein the plurality of fasteners respectively pass through the through holes of the plurality of auxiliary devices and are fixed into the holes of the plurality of steel molds so that each of the plurality of auxiliary device transversely connects the top surfaces of the plurality of steel molds. 1. A mold device for molding a waffle slab , a plurality of connecting structures protruding from four sides of the waffle slab , the mold device comprising:a plurality of steel molds provided on both sides of each of the plurality of connecting structures and surrounding the waffle slab, each of the plurality of steel molds having a top surface that has at least one hole therein;a plurality of auxiliary devices respectively disposed around four sides of the waffle slab and having through holes corresponding to holes of the plurality of steel molds; anda plurality of fasteners;wherein the plurality of fasteners respectively pass through the through holes of the plurality of auxiliary devices and are fixed into the holes of the plurality of steel molds so that each of the plurality of auxiliary devices transversely connects the top surfaces of the plurality of steel molds.2. The mold device of claim 1 , wherein each of the plurality of auxiliary devices comprises an inclined surface facing the waffle slab claim 1 , the inclined surface extending inwardly ...

Continuous fiber reinforcing material tension apparatus, continuous fiber reinforcing material tension method, and wedge body

The continuous fiber reinforcing material tension apparatus includes a pressing body that presses a sleeve to a side of a fixed structure and contains a hollow portion, in which a wedge body is allowed to reciprocate along a continuous fiber reinforcing material, a cylindrical bracket located in an opposite side of the sleeve from the pressing body and having an inner wall surface on which a projection is formed, a columnar rotary jig that is allowed to reciprocate inside the bracket, that engages with an end face of the wedge body, that has a spiral key groove that engages with a key, and that applies rotative force around an axis of the continuous fiber reinforcing material, and a piston that presses an end face of the rotary jig to a side of the fixed structure.

A STEEL BEAM EMBODIMENT WITH REINFORCED LOWER HEAD

The present invention is a steel beam () having a steel profile () comprising a lower head () and an upper head () which is substantially parallel to said lower head (), characterized by comprising cables () provided under the steel profile () along the length of the steel profile () and to which tensioning process is applied, and a lower reinforcing concrete () embodied by the steel profile () lower head () in the form of a layer in a manner covering the cables () so as to fix said cables () at their positions and tensions. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)51020232123. A reinforcing method for a steel beam () embodiment having a steel profile () comprising a lower head () and an upper head () which is substantially parallel to said lower head () , characterized by comprising the steps of:{'b': 232', '23', '20, 'a) Connecting embedded studs () under the lower head () of the steel profile (),'}{'b': 41', '42', '30, 'b) Positioning the fixture () and cables () inside a mold system (),'}{'b': 20', '30', '232', '41, 'c) Positioning the steel profile () on the mold system () such that the embedded studs () are placed into said fixture (),'}{'b': 42', '60, 'd) Applying pre-tensioning process to said cables () by means of pre-tensioning apparatus (),'}{'b': 42', '40', '312', '30, 'e) Fixing the tensions and positions of said cables () and applying lower reinforcing concrete () to a concrete chamber () provided in the mold system (),'}{'b': 60', '42, 'f) Removing the pre-tensioning apparatus () and releasing the cables (),'}{'b': 42', '40', '10', '232, 'g) Transferring the tensioning forces, existing in the fixed cables () and in the lower reinforcing concrete (), to the steel beam () through the embedded studs ().'}6102041423230231. A steel beam () reinforcing method according to claim 5 , wherein during the production step claim 5 , in order to prevent the deflection in the steel profile () which occurs due to the fixture () and the cables () claim 5 , ...

PRESTRESSED CONCRETE

An object to provide a prestressed concrete that can be widely used for general building members, in which a chemical stress induced by an expansive material and a mechanical stress induced by a continuous fiber reinforcing wire are simultaneously used together, and due to a synergistic effect of the mechanical stress and the chemical stress, the strength is increased, the reduction in weight, reduction in thickness, and suppression of cracking are achieved, and the degree of freedom in design increased. To provide a prestressed concrete characterized in that, in a concrete into which a prestress is introduced, a mechanical stress induced by a tensional material and a chemical stress induced by an expansive material for a concrete are introduced simultaneously into the concrete, the tensional material is a continuous fiber reinforcing wire, the expansive material for a concrete is contained in an amount of 5 to 30 kg/m3, and aluminum oxide contained in an amount of 0.2 to 2.0% by weight to the expansive material. 1. A prestressed concrete , being a concrete into which a prestress is introduced , whereina mechanical stress induced by a tensional material and a chemical stress induced by an expansive material for a concrete are introduced simultaneously into the concrete,the tensional material is a continuous fiber reinforcing wire,the expansive material for a concrete is contained in an amount of 5 to 30 kg /m3 to the concrete material, andaluminum oxide is contained in an amount of 0.2 to 2.0% by weight to the expansive material for a concrete.2. The prestressed concrete according to claim 1 , whereinthe continuous fiber reinforcing wire is a reinforcing fiber wire of one or more kinds of fibers selected from an aramid fiber, a carbon fiber, a glass fiber, a poly-p-phenylenebenzobisoxazole fiber, a stone material fiber such as a basalt fiber, and a rust prevention-treated PC steel strand wire.3. The prestressed concrete according to claim 1 , whereinthe expansive ...

Pre-Stressed Box Culvert and Methods for Assembly Thereof

A pre-stressed concrete box culvert includes a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall. The first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, and the first and the second sidewalls each include a free end that has at least one male or female connector. The pre-stressed concrete box culvert includes a three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall. The third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, and the third and the fourth sidewalls each include a free end that has at least one male or female connector to mate with the at least one corresponding male or female connector arranged at one of the respective free ends of the first and the second sidewalls. 1. An apparatus , comprising:at least one three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall, wherein the pre-stressed top slab has a first end and a second end arranged parallel to and opposite to each other and a first side and a second side arranged parallel to and opposite to each other such that the pre-stressed top slab is formed as a parallelogram having two obtuse angles and two acute angles, wherein the first sidewall extends orthogonally from the first end of the pre-stressed top slab and the second sidewall extends orthogonally from the second end of the pre-stressed top slab, wherein the pre-stressed top slab has a plurality of steel tendons extending between the first end and the second end of the pre-stressed top slab thereby imparting a compressive force to the pre-stressed top slab.2. The apparatus of claim 1 , wherein the two acute angles of the pre-stressed top slab range from 15 degrees to 65 degrees.3. The apparatus of claim 1 , further comprising a plurality of bolt pockets in a top surface of the pre-stressed top ...

METHOD FOR MANUFACTURING SEGMENTS FOR A TOWER, PRESTRESSED SEGMENT, TOWER RING, TOWER, WIND TURBINE, AND PRESTRESSING DEVICE

Provided is a method for manufacturing segments for a tower, in particular of a wind turbine, and a prestressed segment for a tower. Provided is tower ring for a tower, a tower of the wind turbine, and a wind turbine. In addition, a prestressing device is provided. The method for manufacturing segments for a tower, in particular of a wind turbine, comprises: arranging at least one prestressing element in a mold, wherein the prestressing element comprises or consists of fiber-reinforced plastic; tensioning the prestressing element; embedding the prestressing element in a concrete mass; hardening of the concrete mass into a longitudinal segment, preferably in the form of a complete longitudinal segment of a tower; removing the hardened longitudinal segment from the mold. 1. A method for manufacturing segments for a tower of a wind turbine , the method comprising:arranging a prestressing element in a mold, wherein the prestressing element comprises fiber-reinforced plastic;tensioning the prestressing element;embedding the prestressing element in a concrete mass;hardening the concrete mass into a longitudinal segment to form a longitudinal segment of a tower; andremoving the longitudinal segment from the mold.2. The method as claimed in claim 1 , comprising:releasing a connection between the prestressing element and a prestressing device.3. The method as claimed in claim 1 , comprising:cutting the longitudinal segment into a plurality of segments.4. The method as claimed in claim 3 , wherein the cutting comprises cutting the longitudinal segment by sawing or water jet.5. The method as claimed in claim 1 , comprising:arranging a reinforcement in the mold, wherein the reinforcement comprises one or more of: fibers, polymer-coated fibers, fiber-reinforced plastic, or steel.6. The method as claimed in claim 1 , comprising:producing the prestressing element in a vacuum infusion process, a manual laminating process, or a pultrusion process.7. The method as claimed in claim 1 ...

Modified Pocket Former

A pocket former includes a pocket former body and a keyway former. The pocket former is adapted to form a void in a concrete member allowing access to the stressing end of a post-tensioning tendon. The keyway former is adapted to form a keyway in the concrete to allow grout to be more securely retained in the void.

System and method for 3d construction printing

A large-scale additive manufacturing system for printing a structure includes an extrusion system and a knitting system. The extrusion system includes a nozzle configured to receive a supply of structural material and to selectively dispense the structural material in flowable form, and a first gantry configured to move the nozzle along toolpaths defined according to a structure to be printed such that structural material may be dispensed along the toolpaths to print a series of structural layers, wherein the series of structural layers bond together to form all or a portion of the structure. The knitting system includes a tow feeder configured to feed a supply of tow material to a location proximate a current course of loops extending above an upper surface of a current structural layer or extending above a base surface in regions where no structural layer has been printed, and a hooking device configured to engage the tow material and bring it through the current course of loops to form a subsequent course of loops interwoven with the current course of loops. A controller is configured to operate the knitting system to form additional subsequent courses of loops each interwoven with a current course of loops after each of the series of structural layers are printed, wherein the interwoven courses of loops create a reinforcement network of knitted loops embedded in the structure, and wherein the series of structural layers are tied together.

Method and device for producing concrete components

In the process of the invention for producing concrete components, carbon fibers which have been prestressed by means of tensile stress or tensile-stressable fibers of at least one textile structure comprising carbon fibers are embedded in a concrete matrix. At least one textile structure comprising carbon fiber bundles is laid in a mold. The carbon fiber bundles are inserted, in each case at a distance from one another, into two accommodation elements which are arranged at two diametrical end faces of the mold and can be connected on the end walls of the mold or thereto through openings so that hollow spaces within the accommodation element are filled with a rapid-curing viscous composition having a mineral basis or a rapid-curing polymer. After curing of the composition or of the polymer, tensile forces act on one or both accommodation element(s) in the longitudinal direction of the carbon fiber bundles at at least one end face by means of a tensioning device. While the tensile forces are acting, the interior of the mold is subsequently filled completely with viscous concrete. After curing of the concrete, the tensile forces on the prestressed carbon fiber bundles are largely transferred to the cured concrete and the concrete component can then be removed from the mold.

Pre-Stressed Concrete Body

A pre-stressed concrete body is disclosed. The concrete body is elongated with a first end and an opposite second end. A plurality of reinforcement strands within the concrete body extend from the first end to the second end and impart a compressive force. A baseplate is disposed on the first end, and has a plurality of first fastener receiving holes and a plurality of second fastener receiving holes. 1. A pre-stressed concrete body , comprising:an elongated concrete body having a first end and an opposite second end;a plurality of reinforcement strands within the concrete body and extending from the first end to the second end, the reinforcement strands imparting a compressive force; anda baseplate disposed on the first end, wherein the baseplate further comprises a plurality of first fastener receiving holes and a plurality of second fastener receiving holes.2. The pre-stressed concrete body of claim 1 , further comprising a plurality of first fasteners embedded in the first end and extending outward from the first end through the plurality of first fastener receiving holes.3. The pre-stressed concrete body of claim 2 , wherein the first fasteners are threaded on an end extending outward from the first end.4. The pre-stressed concrete body of claim 2 , wherein a portion of each of the first fasteners within the concrete body extends less than a full distance between the first end and the second end.5. The pre-stressed concrete body of claim 3 , wherein a portion of each of the first fasteners within the concrete body extends less than a full distance between the first end and the second end.6. The pre-stressed concrete body of claim 1 , wherein the plurality of second fastener receiving holes receive a plurality of second fasteners extending from below the baseplate to above the baseplate.7. The pre-stressed concrete body of claim 6 , wherein the baseplate of the body is removably fastened to a surface below the baseplate using the second fasteners.8. The pre- ...

Refined Prestressed Concrete Elements

Disclosed invention comprises innovations in the fabrication process and the associated design methodology for producing refined prestressed concrete elements/components. The innovations disclosed are fabrication using multiple stages, the use of ultra high strength materials for only critical subcomponents, utilizing thinner sections made of ultra high strength materials, and a unique method of inducing and controlling camber. The embodiments of this invention enable the accelerated construction of concrete structures that are both durable and cost effective. This disclosure demonstrates the significant improvements to the prior art in the areas of durability, constructability, and cost reduction for prestressed concrete components. The embodiments presented in this disclosure are for bridge superstructure applications. 1. A prestressed concrete component designed , fabricated , and incorporated into a structure using innovations: staged fabrication process of prestressed concrete components in which subcomponents of the element are produced separately and combined or sequentially produced , culminating in the formation of a complete prestressed concrete component; use of ultra high strength and extremely durable cementitious materials such as UHPC only in a critical subcomponent(s) of a prestressed concrete component; usage of thin sections with ribs or stiffeners for subcomponents made from ultra high strength materials such as UHPC; generate precisely controlled camber in prestressed prefabricated components by managing the geometry of one or more of the subcomponents prior to adding or attaching other subcomponents while not utilizing the eccentricity of prestressing forces to the centroid of a concrete component to generate camber.2. The design and fabrication process of prestressed concrete component in further comprising of applying restraints to resist changes to the geometric shape of a subcomponent by shoring the bottom flange of a prestressed concrete ...

Roadway Conduit Systems and Methods

A conduit segment casting mold system includes at least one inner mold; at least one outer mold configured as at least two outer mold sections of opposed shapes that define a cavity between the at least two outer mold sections that is sized to at least partially enclose the at least one inner mold, each of the at least two outer mold sections including a respective mating surface, each of the at least two outer mold sections including at least one hole sized to receive a cable, and the at least one hole of a particular one of the at least two outer mold sections is aligned with the at least one hole of another particular one of the at least two outer mold sections when the mating surfaces of the particular one and the another particular one of the at least two outer mold sections are mated; and a mold base. 1. (canceled)2. A vehicle roadway conduit system , comprising: a floor portion that comprises a roadway surface configured to receive one or more traveling vehicles,', 'a ceiling portion, and', 'at least one sidewall portion coupled to the floor portion and the ceiling portion such that the floor, ceiling, and at least one sidewall portions define a roadway conduit volume through which the one or more autonomous, traveling vehicles traverse the at least one roadway conduit section;, 'at least one roadway conduit section that comprisesat least one roadway conduit ingress coupled to a first location of the at least one roadway conduit section;at least one roadway conduit egress coupled to a second location of the at least one roadway conduit section; anda visual display coupled to at least a portion of the at least one roadway conduit section and configured to generate an image viewable by at least one passenger of the one or more autonomous, traveling vehicles that traverse the at least one roadway conduit section within the roadway conduit volume.3. The roadway conduit system of claim 2 , wherein the one or more autonomous claim 2 , traveling vehicles comprises ...

Production Of Pre-Stressed Concrete Structures Using Fibrous Reinforcing Tendons

A pre-stressed cast concrete structure comprises embedded fibrous reinforcing tendons in tension. The fibrous reinforcing tendons each comprises a plurality of continuous non-metallic fibers extending substantially the entire length of the tendon. A system for pre-stressing a cast concrete structure includes a mold for containing concrete, fibrous reinforcing tendons, chuck assemblies associated with the reinforcing tendons and a tensioning mechanism. When cured, the concrete rigidly surrounds the reinforcing tendons such that the reinforcing tendons are maintained in tension. The chuck assemblies have a plurality of jaws that contact the reinforcing tendons in a manner to resist damage to the fibers. 1. A pre-stressed cast concrete structure comprising a plurality of embedded fibrous reinforcing tendons in tension , wherein each of said fibrous reinforcing tendons comprising a plurality of continuous non-metallic fibers extending substantially the entire length of said tendon.2. The pre-stressed cast concrete structure of claim 1 , wherein said non-metallic fibers are selected from the group consisting of basalt fibers claim 1 , carbon fibers claim 1 , polymeric fibers claim 1 , glass fibers and mixtures thereof.3. The pre-stressed cast concrete structure of claim 1 , wherein said non-metallic fibers are embedded in a composite matrix with a binding polymer comprising a thermoset resin or a thermoplastic resin.4. The pre-stressed cast concrete structure of claim 3 , wherein said binding polymer is selected from the group comprising epoxy claim 3 , a polyester claim 3 , a vinyl ester or nylon.5. A chuck assembly for retaining a fibrous reinforcing tendon in tension claim 3 , the chuck assembly comprising:(a) a cylindrical housing having an incoming end and an outgoing end, said housing having an interior surface that tapers inwardly from said outgoing end to said incoming end to form a central annular opening at said incoming end;(b) a plurality of jaws, each of ...

THERMAL-INSULATED EXTERIOR WALL BOARDS, DEDICATED MOLDS AND MAKING METHODS THEREOF

A prefabricated prestressed thermal-insulated exterior wall board and a light weight composite thermal-insulated exterior wall board include a thermal-insulated core board, a reinforcement mesh on both sides of the thermal-insulated core board, and a concrete layer cast on the reinforcement mesh, and the thermal-insulated core board includes a plurality of throughout-length thermal-insulated core board ribs, and the concrete layer includes a plurality of concrete ribs interlaced with and matching the thermal-insulated core board ribs, a shear-resistant connection members connected with the reinforcement mesh is inserted between the adjacent thermal-insulated core board ribs, and prestressed tendons are disposed in grooves formed between the adjacent thermal-insulated core board ribs and grooves formed between the adjacent concrete ribs in the prefabricated prestressed thermal-insulated exterior wall board. 1. A lightweight composite thermal-insulated exterior wall board , comprising a thermal-insulated core board , a reinforcement mesh on both sides of the thermal-insulated core board , and a concrete layer cast on the reinforcement mesh , wherein the thermal-insulated core board is provided with a plurality of throughout-length thermal-insulated core board ribs , the concrete layer is provided with a plurality of concrete ribs interlaced with and matching the thermal-insulated core board ribs , and a shear-resistant connector connected with the reinforcement mesh is inserted between the adjacent thermal-insulated core board ribs.2. The lightweight composite thermal-insulated exterior wall board according to claim 1 , wherein the cross sections of the thermal-insulated core board rib and the concrete rib are trapezoidal claim 1 , zigzag or wavy.3. The lightweight composite thermal-insulated exterior wall board according to claim 2 , wherein the thermal-insulated core board is made of a thermal-insulated material such as XPS claim 2 , EPS claim 2 , polyphenylene ...

REINFORCED ADDITIVE MANUFACTURING PROCESS FOR THE MANUFACTURE OF COMPOSITE MATERIALS

An additive manufacturing process for the manufacture of a body from composite materials, including the steps of: providing a support structure against which the composite material is to be formed; installing a reinforcing material adjacent the support structure; and progressively applying a matrix material to the support structure to cover the reinforcing material, the matrix material being applied from a nozzle movable relative to the support structure. 128-. (canceled)29. An additive manufacturing process for the manufacture of a body from composite materials , comprising the steps of:providing a support structure against which the composite material is to be formed; installing a reinforcing material adjacent the support structure; andprogressively applying a matrix material to the support structure to cover the reinforcing material, the matrix material being applied from a nozzle movable relative to the support structure.30. The process of claim 29 , wherein the support structure is inclined and a closing member is provided claim 29 , the support structure and the closing member cooperating to form a mould cavity in which the composite material is formed.31. The process of claim 30 , wherein the closing member is applied progressively as the matrix material is applied.32. The process of claim 29 , wherein the nozzle is part of a movable printing head.33. The process of claim 29 , further including the step of bringing a shaping member into contact with the matrix material to obtain a desired surface contour.34. The process of claim 29 , wherein the step of providing a support structure includes arranging a fabric material adjacent a support structure and applying a hardening agent to the fabric.35. The process of claim 29 , wherein the matrix material is heated during application.36. The process of claim 35 , wherein the support structure is heated to heat the matrix material.37. The process of claim 35 , wherein the reinforcing material conducts electricity and ...

METHOD AND SYSTEM FOR PRODUCING A CONCRETTE WORK PIECE PRESTRESSED BY REINFORCEMENT

The method according to the invention for producing a prestressed concrete workpiece is characterized in that the prestress is created by a heat treatment, wherein the concrete and the reinforcement therefor are selected in such a way that, when cooling the concrete workpiece from an elevated temperature, the heat expansion coefficient of the concrete is less than that of the reinforcement, and in that, during cooling, the concrete and the reinforcement adhere sufficiently strongly to one another if, during cooling, the concrete is hydrated at least to such an extent in order to be able to expand the reinforcement on account of the different heat expansion coefficients, and in that the concrete, together with the reinforcement, is brought to the elevated temperature in such a way that and is hydrated during cooling at least to such an extent that it is prestressed by the reinforcement after cooling.

Pocketformer with releasable grout ring and tendon, tail gauge and method for using

A pocketformer includes a pocketformer body having a tapered exterior surface. The exterior surface has at least one portion along a length thereof of substantially constant diameter. The pocketformer body has a feature for engaging an anchor base in a concrete structure prior to pouring concrete and a grout ring having a substantially constant inner diameter substantially equal in diameter to the at least one portion. The grout ring has an exterior surface shaped to cause retention of the grout ring in set concrete.

PRESTRESSING PROCESS THROUGH PRESTRESSED CONCRETE BARS ACTIVATED FROM THE MIDDLE SECTION OF THE BAR

A process for molding prestressed slender and corrugated surface concrete bars to be used subsequently in casting concrete pieces or structures includes, placing them conveniently inside said pieces or structures, in order to also prestress said pieces or structures by gripping and relieving the tensions contained in said bar from the middle section of its longitudinal length. 13313. A prestressing process through prestressed concrete bars activated from the middle section of the concrete bar , wherein it previously prestresses slender corrugated surface concrete bars () , said prestressed bars used to cast concrete pieces or structures which shall also be prestressed through transfer of forces by gripping , when said bars () are activated from the middle section of its longitudinal length by relieving the tensions previously applied to said prestressed bar , removing part of the cast concrete around the steel wire cable () placed inside the prestressed bar () or using any other device previously introduced to the center of the bar capable of relieving said tensions , transferring them to the concrete piece or structure.2. A method for prestressing cast concrete structures , comprising:casting a concrete bar, the cast concrete bar having corrugations on its exterior surface, the concrete bar cast externally to a tensioned cable;releasing the cable from tension;casing a concrete structure externally to the concrete bar;creating an opening in the concrete structure to access the concrete bar proximate a center of the concrete bar removing a section of the concrete bar proximate a center thereof; andfilling the opening with a material to protect the cable.3. The method of wherein the material comprises cement mortar.4. The method of wherein the concrete bar is cylindrical. Continuation of International Application No. PCT/BR2018/050455 filed on Dec. 11, 2018. Priority is claimed from Brazilian Application No. 20 2017 026689 9 filed on Dec. 11, 2017. Both the foregoing ...

SYSTEM AND METHOD FOR APPLYING STRESS TO A REINFORCEMENT MEMBER

A system and method for applying tension to a reinforcement member is provided. The system includes a gripping device, a tension device, and a tension application sub-system. The gripping device includes first and second attachments. Each attachment retains a respective end of the reinforcement member with sufficient friction force based on a predetermined tension to be applied to the reinforcement member. The tension device includes first and second tension tubes configured to removably receive and hold the first and second attachments, respectively. The tension application sub-system has first and second tension application apparatuses and first and second coupling devices. The first and second coupling devices couple the first and second tension tubes to the first and second tension application apparatuses, respectively. At least one of the first and second tension application apparatuses creates and controllably adjusts a tension load within the reinforcement member. 1. A system , comprising:a gripping device including a first attachment and a second attachment, each attachment being configured to retain a respective end of a reinforcement member with sufficient friction force based on a predetermined tension to be applied to the reinforcement member;a tension device including first and second tension tubes, each of the first and second tension tubes being configured to removably receive and hold the first and second attachments, respectively; anda tension application sub-system having first and second tension application apparatuses, the first and second tension application apparatuses being fixed a predetermined distance apart, the tension application sub-system including first and second coupling devices, the first and second coupling devices being configured to fixedly couple the first and second tension tubes to the first and second tension application apparatuses, respectively, at least one of the first and second tension application apparatuses being ...

System and method for embedding substrate in concrete structure

A system and method for allowing components to attach to a pre-cast pre-stressed concrete structure is provided. The system includes a first attachment part and a second attachment part. The first attachment part has a first body. The first body has a first concrete structure facing side and a first plurality of attachment members extending from the concrete structure facing side. The second attachment part has a second body. The second body has a second concrete structure facing side and a second plurality of attachment members extending from the concrete structure facing side. The first and second attachment parts are spaced apart forming a compressible junction therebetween. The pre-cast, pre-stressed concrete structure is formed from uncured cement, at least of a portion of the first and second attachment members being embedded in the pre-cast, pre-stressed concrete structure.

System and method for embedding substrate in concrete structure

System and method allows a component to attach to a pre-cast, pre-stressed concrete structure. The system includes a first attachment part, a pre-cast, pre-stressed concrete member and first and second reinforcing members. A first body of a first attachment part has a first concrete structure facing side and a first plurality of attachment members. The pre-cast, pre-stressed concrete member is formed from uncured cement. At least a portion of the attachment members are embedded within the pre-cast, pre-stressed concrete member. The first reinforcing member is placed under a first tension load and the second reinforcing member is placed under a second tension load. The pre-cast, pre-stressed concrete member is formed from uncured cement poured about at least a portion of the first and second reinforcing members while the first and second reinforcing members are under stress.

Systems, apparatuses, and methods related to fiber strands used in reinforced concrete

A reinforcing bar, and a method of producing a reinforcing bar, are provided. The reinforcing bar includes a plurality of strands and a deformity pattern. Each strand includes a plurality of carbon fibers. The strands having been impregnated with a resin and twisted forming a unified structure. The deformity pattern being formed within the unified structure by twisting the strands a predetermined number of times per linear foot of the unified structure and allowing the resin-impregnated unified structure to cure.

Method for Producing a Textile-reinforced Construction Material Component, and Tensioning Device for Same

A method for producing a three-dimensional construction material component preferably having at least one curved surface. A plurality of spacers are arranged in a formwork. A textile reinforcement is supported on the spacers, such that the textile reinforcement has a defined position within a formwork interior of the formwork. A tensile force is applied via a tensioning device to the textile reinforcement in at least one tension direction. Construction material is introduced into the formwork interior and surrounds the textile reinforcement. The construction material is then hardened, wherein the tensile force is maintained during the hardening. During this process, the spacers are integrated into the construction material component. The tensioning device has at least one clamping unit for clamping an end portion of the textile reinforcement between two clamping surfaces. The clamping surfaces are provided on clamping insert bodies, which are of a plastic material of a defined hardness. 12021. A method for producing a construction material component () having a textile reinforcement () , said method comprising:{'b': 30', '31', '20, 'providing a formwork () having at least one formwork part () for producing the construction material component (),'}{'b': 32', '30, 'placing spacers () in the formwork (),'}{'b': 21', '23', '32, 'arranging the textile reinforcement () produced from at least one textile strand () on the spacers (),'}{'b': 21', '40', '30, 'applying a tensile force (FZ) to the textile reinforcement () with a tensioning device () located outside the formwork (),'}{'b': 30', '21, 'pouring a flowable construction material (B) into the formwork () around the textile reinforcement () and hardening the construction material (B),'}{'b': 20', '30, 'removing the hardened construction material component () from the formwork ().'}232323231a. The method according to claim 1 , wherein the spacers () are arranged with an underside () of the spacers () on a formwork part ...

REFINED PRESTRESSED CONCRETE ELEMENTS

Disclosed invention comprises innovations in the fabrication process and the associated design methodology for producing refined prestressed concrete elements/components. The innovations disclosed are fabrication using multiple stages, the use of ultra high strength materials for only critical subcomponents, utilizing thinner sections made of ultra high strength materials, and a unique method of inducing and controlling camber. The embodiments of this invention enable the accelerated construction of concrete structures that are both durable and cost effective. This disclosure demonstrates the significant improvements to the prior art in the areas of durability, constructability, and cost reduction for prestressed concrete components. The embodiments presented in this disclosure are for bridge superstructure applications. 1. A method of reducing camber variance among beams during fabrication , the method comprising:applying prestress and/or post tension to a lower flange of a beam either before casting and curing of the lower flange and/or after the casting and curing of the lower flange, thereby forming a compressed lower flange of the beam;applying an external force to the compressed lower flange to introduce a first amount of camber, which is of the compressed lower flange; andduring the applying of the external force, disposing a web of the beam on the compressed lower flange thereby resulting in a second amount of camber, which is of the beam.2. The method of claim 1 , wherein the applying of the prestress includes prestressing of strands of the lower flange.3. The method of claim 1 , wherein the applying of the post tension includes applying the post tension to tendons of the lower flange.4. The method of claim 1 , wherein the applying of the prestress to the lower flange of the beam does not apply prestress and/or post tension to the web of the beam.5. The method of claim 1 , wherein the disposing of the web further includes disposing a top flange of the beam ...

PRE-STRESSED INSULATED CONCRETE PANELS AND METHODS FOR MAKING AND USING THE SAME

Pre-stressed insulated concrete panels are disclosed. Methods of making and using pre-stressed insulated concrete panels are also disclosed. 1. A method of making a pre-stressed insulated concrete panel , said method comprising:forming the pre-stressed insulated concrete panel with a concrete panel thickness of the pre-stressed insulated concrete panel extending in a horizontal orientation, a concrete panel width of the pre-stressed insulated concrete panel extending in a vertical orientation, and a concrete panel length (height) of the pre-stressed insulated concrete panel extending in a horizontal orientation.2. The method of claim 1 , wherein said forming step comprises:forming the pre-stressed insulated concrete panel on a base form, wherein said forming step comprises:forming the pre-stressed insulated concrete panel on (i) the base form and between (ii) front and back side panels extending along the concrete panel width and the concrete panel length, and (ii) first and second form end panels extending along the concrete panel width and the concrete panel thickness.3. The method of claim 2 , wherein the base form comprises (a) one or more first base form holes within an upper surface of the base form claim 2 , and said forming step comprises attaching the first and second form end panels to an upper surface of the base form via the one or more first base form holes claim 2 , and (b) one or more second base form holes within an upper surface of the base form claim 2 , and said forming step comprises attaching the first and second side panels to the base form via the one or more second base form holes.4. The method of claim 2 , wherein (A) each of the front and back side panels has (a) a side panel height (i.e. claim 2 , extending in a vertical direction) of from about 30 inches (in) to about 72 in claim 2 , and (b) a side panel length (i.e. claim 2 , extending in a horizontal direction) of from about 8 ft to about 12 ft claim 2 , and (B) each of the first and ...

用于混泥土砌块的钢结构

本专利涉及一种钢结构，公开了一种用于混泥土砌块的钢结构，包括由预应力横筋固定连接预应力纵筋形成的第一平面架和第二平面架，第一平面架与第二平面架之间固定连接有有连接件，第一平面架与第二平面架之间转动相连有叶轮，第一平面架与第二平面架之间设有倾斜的滑轨，滑轨内滑动相连有齿条，齿条的一端伸出钢结构外，齿条啮合连有若干齿轮，齿轮转动连接在滑轨上，齿轮上连有摆锤，摆锤位于第一平面架与第二平面架之间；本专利与现有技术相比，在混泥土砌块的浇注过程，混泥土砌块内部产生的气泡通过叶轮，提高了混泥土砌块的质量，同时浇注过程中，齿条带动摆锤摆动，使混泥土砌块的沉淀更好，更加结实，品质更高。

Steel structure for concrete building block

本发明涉及一种钢结构，公开了一种用于混泥土砌块的钢结构，包括由预应力横筋固定连接预应力纵筋形成的第一平面架和第二平面架，第一平面架与第二平面架之间固定连接有有连接件，第一平面架与第二平面架之间转动相连有叶轮，第一平面架与第二平面架之间设有倾斜的滑轨，滑轨内滑动相连有齿条，齿条的一端伸出钢结构外，齿条啮合连有若干齿轮，齿轮转动连接在滑轨上，齿轮上连有摆锤，摆锤位于第一平面架与第二平面架之间；本发明与现有技术相比，在混泥土砌块的浇注过程，混泥土砌块内部产生的气泡通过叶轮，提高了混泥土砌块的质量，同时浇注过程中，齿条带动摆锤摆动，使混泥土砌块的沉淀更好，更加结实，品质更高。

Lightweight reinforced structural material

A lightweight, reinforced structural material, having low density and high flexure and compression strengths, is prepared by combining together inorganic cementitious material and organic polymer-forming material to form a mixture and forming the mixture into a slab while embedding an elongate reinforcing members which are relatively rigid in the depth dimension of the slab. Polymerization and setting of the material tensions the reinforcing members.

Method for production of slab on production line of off-formwork molding

FIELD: construction. SUBSTANCE: invention relates to production of building structures, particularly, to production of hollow-core reinforced concrete slabs by bench-topping. Method of making a slab on a process line of off-formwork molding includes production of a floor slab with installation and tensioning of high-strength working reinforcement above the stand of the technological line. Note here that said slabs are formed by application of autonomous moving concrete feeder. In addition, the combine is equipped with a hinged line for lubrication of the surface of the stand part of the table of the process line and a hinged pneumatic line and placed above the stressed working fittings and along the movement path of the autonomous combine. Lubricant is first supplied between the rods of the stressed working reinforcement on the surface of the table stand part by means of nozzles, and then the mixture of concrete is supplied. At that, lubricant is supplied through dosing units into nozzles directed with their outlets downwards, towards stand bench part below stressed working fittings, but above table bench stand surface. At that nozzles with proportioners are connected by distribution pipes to the main pipeline, which in its turn is connected in series along the circuit with control valve, pressure sensor, filter, pump and tank fixed on the combine. Note here that vessel is filled with lubricant. Each nozzle is connected by distributing pneumatic tubes to the pneumatic main line, and then to the pressure and air flow rate regulator connected to the compressor by means of the receiver. Spraying of lubricant directly above surface of table bench part is carried out synchronously with connection of control valve by means of automatic switching on movement sensor of combine, arranged on process line with hinged suspension for lubrication with possibility of supply of latter under pressure. EFFECT: enlarging technological capabilities, increasing efficiency of bench line ...

Method of fastening an anchor body made of steel on a tension wire

Method of fastening anchoring means to a tensioning wire

Pedestal for preventing beam end from tensioning cracks and construction method

本发明提供了一种防梁端张拉裂缝台座及施工方法，属于建筑施工技术领域。其技术方案为：一种防梁端张拉裂缝台座，包括第一模板、第二模板、连接合页、止水胶条，设置在第一模板底部的第一支撑部，以及设置在第二模板底部的第二支撑部；第二支撑部包括由上至下依次设置在第二模板正下方的第一连接板、第二连接板，均匀设置在第二模板与第一连接板之间的若干个第二纵梁支撑，固定连接在第一连接板与第二连接板之间的若干个高强弹簧，以及固定连接在第一连接板底面上的附着式振捣器。本发明的有益效果为：本发明提供的一种防梁端张拉裂缝台座及施工方法可避免梁端裂缝、保证梁端混凝土的浇筑质量、结构及制作简单、可周转使用、适应性强。

Post-tensioning method prestress box girder movable type tensioning trolley system

本发明提供一种后张法预应力箱梁移动式张拉台车系统，包括牵引车、移动台车，所述移动台车包括台车底盘、支撑立柱、功能机构；所述台车底盘包括行走轮、行走轴承、台车纵梁、台车横梁、放置平台、人行通道，所述台车横梁和台车纵梁形成框架结构，所述放置平台和人行通道设置在框架结构上方，所述支撑立柱竖向设置在台车纵梁的上方；所述功能机构包括横梁、纵梁、纵向移动小车、起重葫芦轨道梁、起重葫芦，所述起重葫芦轨道梁横向设置，与纵向移动小车协同实现预制箱梁的纵向移动和横向移动。本发明利用起重葫芦、纵向移动小车、牵引车实现起吊和移动的综合功能，减少了预制梁场龙门吊的占用时间和配置数量，降低了成本，提高了施工效率。

PCCP tube core vertical pouring rapid material homogenizing device and method

本发明公开了一种PCCP管芯混凝土立式浇筑快速均料装置，涉及预应力钢筒混凝土管浇筑成型工艺领域。它包括顶杆，均料锥筒，附着式风动振捣器以及分隔板，所述附着式风动振捣器附着于所述均料锥筒内壁；有吊耳位于所述顶杆中下部，所述顶杆底端与所述均料锥筒的锥顶连接；所述分隔板均匀分布于所述均料锥筒的外壁，有伸缩槽位于所述分隔板中部，有长短边呈凹凸状交错分布于所述均料锥筒的锥底外边缘。它克服了现有技术费时，需要人工均料，浇筑质量无保证，管芯产量严重受限的缺点。本发明还公开了PCCP管芯混凝土立式浇筑快速均料方法。

A kind of slab ballastless track concrete track slab, manufacture method and tensioning equipment thereof

一种用于制造上述板式无砟轨道混凝土轨道板的张拉装置，包括由若干个与板体形状相适配的钢模，所述先张纵向预应力钢筋、先张横向预应力钢筋均设置于各钢模内部，所述钢模沿横向、纵向排列成钢模矩阵；所述各先张纵向预应力钢筋、先张横向预应力钢筋的两端均设置有连接杆，位于所述钢模矩阵中相邻两个钢模之间的连接杆同轴固定连接；通过设置于预应力筋上的、外凸的锚固板，在张拉预应力钢筋、并浇筑混凝土，养护、放张以后，通过预应力钢筋的回缩趋势自锚，使制成的轨道板中的预应力钢筋具有先张法所带来的高握裹力的同时、兼具后张法制造时预应力钢筋端部的锚固功能，从而提高轨道板的整体强度。

A kind of precast prestressed concrete beam formula stair and making construction method

本发明公开了一种预制预应力混凝土梁式楼梯及制作施工方法，属于建筑工程技术领域，其结构包括梁式楼梯本体和支撑梁式楼梯本体的上层楼梯梁、下层楼梯梁，梁式楼梯本体包括梯段斜梁和阶梯状踏步，梯段斜梁沿梁式楼梯本体长度方向设置，踏步的两端支撑于梯段斜梁上，梁式楼梯本体的两端分别与上层楼梯梁、下层楼梯梁相连，梯段斜梁下部沿长度方向布置预应力钢筋，梯段斜梁上部沿长度方向布置上部普通钢筋，预应力钢筋和上部普通钢筋的外部沿长度方向等间距布置箍筋，预应力钢筋和上部普通钢筋位于箍筋内，所述的踏步内设置有踏步分布钢筋。本发明具有适用跨度大、抗裂性能好、自重轻、便于吊装和运输及抗震性能优良等特点。

Cement mortar panel with pretensed biaxial reinforcement

This cement mortar panel with pretensed biaxial reinforcement, comprises a cement mortar plate that, is between 2 and 7 cm. thick and includes a biaxial reinforcement, with hidden in the cement mortar means for versatile operation of the whole panel enabling handling and/or fastening thereof to a building structure, said means of versatile operation comprise, firstly means of retention in the hardening cement mortar and secondly and conversely, means for any type of securing for manipulation elements for the panel and means for fastening the same to the building structure.

Prestressed solid square pile arranges mould and square pile processing method

本发明提供了一种预应力实心方桩排模及方桩加工方法，涉及预应力方桩的技术领域。所述的预应力实心方桩排模，包括：底模和多个侧模，多个所述侧模沿所述底模的宽度方向间隔设置，相邻两个侧模之间形成用于浇筑方桩的预留空间；所述底模上设有多个第一安装孔；所述侧模上设有第二安装孔；紧固件分别穿过第一安装孔和第二安装孔将底模与侧模固定连接。以缓解现有技术中存在的模具不能制造出多种规格方桩的技术问题。

Pallet of mould for making prestressed reinforced-concrete articles

Process for manufacturing prestressed constructions

СПОСОБ ИЗГОТОВЛЕНИЯ ПРЕДВАРИТЕЛЬНО НАПРЯЖЕННЫХ СТРОИТЕЛЬНЫХ КОНСТРУКЦИЙ, включающий установку арматурного каркаса, нанесение легкобетонного сло  с объемной массой 200-400 кг/м и по раст нутой зоне - полимербетонной смеси, термообработку с последующим нанесением мастики по периметру сжатой зоны конструкции, установку облицовочных накладных элементов по слою мастики и отверждение, отличающийс  тем, что, с целью повыщени  эксплуатационной надежности конструкций , перед нанесением легкобетонного сло  в сжатую зону конструкции укладывают бетонную смесь, а в раст нутой зоне после термообработки размещают дополнительную арматуру, нат жение которой производ т в два этапа: после установки облицовочных торцовых элементов на 45-55% от предельной величины предварительного напр жени  и окончательно - после установки облицовочных накладных элементов в сжатой зоне. О) 05 а THE METHOD OF MANUFACTURING A PRECISELY STRESSED CONSTRUCTION STRUCTURES, including installing a reinforcement cage, applying a lightweight concrete layer with a bulk weight of 200-400 kg / m and along the stretched zone - polymer concrete mix, heat treatment followed by applying a mastic around the perimeter of the device. mastic and curing, characterized in that, in order to increase the operational reliability of the structures, before applying the lightweight concrete layer to the compressed zone of the structure The concrete mix is placed in, and in the stretched zone, after heat treatment, additional reinforcement is placed, the tension of which is carried out in two stages: after installing facing facing elements by 45-55% of the maximum prestressing value and finally - after installing facing facing elements in compressed zone. O) 05 a

Vertical pouring and fast homogenizing device and method for pipe cores of PCCPs

本发明公开了一种PCCP管芯混凝土立式浇筑快速均料装置，涉及预应力钢筒混凝土管浇筑成型工艺领域。它包括顶杆，均料锥筒，附着式风动振捣器以及分隔板，所述附着式风动振捣器附着于所述均料锥筒内壁；有吊耳位于所述顶杆中下部，所述顶杆底端与所述均料锥筒的锥顶连接；所述分隔板均匀分布于所述均料锥筒的外壁，有伸缩槽位于所述分隔板中部，有长短边呈凹凸状交错分布于所述均料锥筒的锥底外边缘。它克服了现有技术费时，需要人工均料，浇筑质量无保证，管芯产量严重受限的缺点。本发明还公开了PCCP管芯混凝土立式浇筑快速均料方法。

Method for producing solid square pile by using hollow square pile die

本发明提供一种利用空心方桩模具生产实心方桩的方法。包括以下步骤：将搅拌好的混凝土通过方桩模具的布料口泵送压入方桩模具中进行布料，布料同时将方桩模具的临近溢料口的一端抬高；待布料结束后，将方桩模具放平，用第一临时堵料门封闭布料口，然后将方桩模具的临近溢料口的一端抬高；至混凝土将初凝时，将方桩模具放平，用第二临时堵料门封闭溢料口；将方桩模具放入蒸汽养护池中进行蒸汽养护。

Precasting brick moduel with earthquake resistant structure and manufacturing method thereof

본 발명은 내진 구조의 프리캐스팅 벽돌 모듈 및 그 제조방법에 관한 것으로, 더욱 상세하게는 복수의 벽돌에 연결홈부를 형성하고, 연결홈부에 와이어 형상의 연결부재를 삽입하여 접합함으로써, 복수의 벽돌이 일체로 접합되어 하나의 모듈 형태로 만들기 때문에 외장 벽돌을 조적하는 시간을 현저히 단축할 수 있고 지진 등의 충격에도 견딜 수 있는 내진 구조의 프리캐스팅 벽돌 모듈 및 그 제조방법에 관한 것이다.

Continuous production complete equipment for prestressed track slab

本发明公开了一种预应力轨道板连续化生产成套设备，其包括自前往后依次分布的脱模工序设备、清模工序设备、预装件工序设备和浇注设备，还包括平行设置且用于输送轨道板模具的两套传送机构和位于两套传送机构一端且用于输送轨道板模具的转向输送机构，两套传送机构和转向输送机构组成U型的输送线，输送线上设有间隔设置的多个轨道板模具，输送线的一侧设有水养池和轨道板存储架，两套传送机构的另一端设有养护箱，养护箱内设有多个托架，所述预应力轨道板连续化生产成套设备还包括能将养护箱的箱门打开且同时将轨道板模具运送到托架上的转运车。本发明可实现预应力轨道板的连续化生产，具有有效保证轨道板生产质量和提高劳动效率的优点。

Reinforced pipe

This patent application provides reinforced, composite concrete pipe having polymeric resin composition, filler and fiber reinforcement providing high strengths and resistant features to corrosion and environmental conditions. Joinery means for making pipelines of the individual pipe elements is provided and includes methods of making resilient resistant joinery and shock absorbinb joinery and pipe features of construction. The pipe has interior and exterior laminated constructions on porous structural material bodies, and includes also polymeric resin composition, filler and fiber reinforcements within the body of the porous structural material as a unitary structured material. Force systems derived from ehcmical means of stressing as well as thermal and mechanical means of prestressing preloads into the structure of the made pipe and pipelines comprise components of structure of the said reinforced, composite concrete pipe and pipelines.

Method for manufacturing concrete block for turn out of automated guideway type light rail transit and method for laying turn out of automated guideway type light rail transit using concrete block manufactured by the same method

본 발명은 안내궤도식 고무차륜 경전철의 분기기용 콘크리트 블록 제조방법에 관한 것으로서, 공장에서 지반의 양측에 임시조립대를 대향 설치하여 다수를 배열하는 단계와, 임시조립대에 임시레일을 설치한 후 조정하는 단계와, 임시조립대 사이의 지반에 하부거푸집을 설치하는 단계와, 바닥부 및 측면부로 이루어지는 측면거푸집을 하부거푸집의 상면 일측 및 타측에 바닥부가 안착되도록 설치하는 단계와, 측면거푸집의 바닥부에 속이 빈 형태의 매입너트를 상방으로 향하도록 설치하되 안내레일지주 및 고정안내판 또는 가동안내판이 설치되어야 하는 위치에 다수를 설치하는 단계와, 임시레일을 따라 이동하는 철근시공기를 이용하여 하부거푸집 상에 철근을 배근하는 단계와, 하부거푸집 상에 양단이 각각 측면거푸집에 접촉되도록 횡방향으로 조절관을 설치하고 종방향으로 쉬스관을 설치하는 단계와, 하부거푸집과 측면거푸집의 바닥부 상에 콘크리트를 타설한 후 양생하여 콘크리트 블록을 형성하는 단계와, 콘크리트 블록을 거푸집으로부터 분리한 후 뒤집는 단계를 포함한다. The present invention relates to a method for manufacturing a concrete block for the branch of the guideway rubber wheel light rail, the step of arranging a plurality of temporary assembly stand opposite sides of the ground in the factory, and after installing the temporary rail in the temporary assembly stand And installing the lower formwork on the ground between the temporary assembly stand, and installing the side formwork consisting of the bottom part and the side part so that the bottom part is seated on one side and the other side of the lower formwork, and the bottom part of the side formwork. Install the hollow nut in the upward direction, but install a plurality of guide rail holders, fixed guide plate or movable guide plate in the position to be installed, and using the reinforcement machine moving along the temporary rail Placing the reinforcing bar on the side, and on both sides of the lower form Installing the control pipe and installing the sheath pipe in the longitudinal direction, placing concrete on the bottom of the lower formwork and the side form and curing to form a concrete block, and separating the concrete block from the formwork and turning it over Steps.

A kind of vertical connecting plate girder construction and production method

本发明涉及一种纵连板梁结构及制作方法，属于轨道及桥梁工程技术领域，包括轨板梁，所述轨板梁包括板体，所述板体内预留有纵向后张预应力孔道和用于安装梁板间纵向拉筋的拉筋孔，纵向后张预应力孔道具有拱度，板体顶面有两条平行、间隔的承轨槽；所述板体顶面内凹形成所述承轨槽，所述承轨槽纵向贯穿板体的两端面。本发明将轨道功能和桥梁功能合二为一，不仅构成简单，而且可降低建造成本，是一种全新的桥梁的上部结构；在板体内预留安装梁板间纵向拉筋的拉筋孔，通过在拉筋孔中装纵向拉筋将多个轨板梁连接在一起形成长区段或全线纵连板梁。当轨板梁的一端受力时，其另一端被纵向拉筋拉住从而不会向下低头和向上翘起，可增强轨道的整体稳定性。

Manufacturing method of composite block and composite block

The present invention relates to a synthetic block of stone and concrete and a manufacturing method thereof, which are able to form a stonework by using a synthetic block, which is made from stone for a front surface and made from concrete blocks for a rear surface, to present a natural beauty by building an exposed surface of the stonework by using stone, to firmly install the stonework on an inclined surface by using the concrete blocks, to perform a stable construction in terms of structure, to firmly fixate the stone and the concrete blocks, to prevent the stone from escaping, and to easily manufacture the synthetic blocks by using a steel frame divided into a lower frame and an upper frame. To this end, according to the present invention, the synthetic block of stone and concrete comprises: the stone built on a cut ground unit or an embankment ground to be placed on a front surface when being built to express a natural beauty; an anchor installed to allow one side end to be inserted into the stone and to allow the other side end to be exposed to the outside of the stone; and the concrete block molded on and integrated with the stone by the anchor.

Transformable formwork apparatus and method for manufacturing concrete precast wall

본 발명은, 상판(A), 하판(B)과 상기 상판과 상기 하판 사이에서 놓여져 상판을 지탱하는 트러스(T)를 포함하는 프리캐스트 콘크리트 벽체를 제작하기 위한 거푸집 장치로서, 상부에 철근을 배근할 수 있는 직사각형 테이블(2), 상기 테이블 가장자리를 따라서 설치되며 한 면이 판의 맞춤단부의 외형을 갖는 마구리(3), 횡방향 양쪽에는 적절한 간격으로 이격되어 설치된 H빔 기둥(4), 종방향으로 이격되게 설치된 H빔 기둥(5)을 포함한다. 상기 각각의 횡방향 H빔 기둥(4)은 안쪽으로 돌출하며, 상기 횡방향 H빔 기둥(4)을 따라서 상하로 이동가능한 받침대(41)를 포함하며, 상기 받침대(41)에는 수평빔(6)이 평행하게 설치되어 있으며, 수평빔(6) 사이에 상판이 놓여지고 상판과 수평빔(6)에 종방향으로 걸쳐 놓여진 브라켓(7)을 포함한다. 이러한 장치는 두 개의 대칭적인 판을 가지는 벽체를 보다 용이하게 제작할 수 있게 한다. The present invention is a formwork device for manufacturing a precast concrete wall including an upper plate (A), a lower plate (B) and a truss (T) that is placed between the upper plate and the lower plate to support the upper plate, and reinforced a reinforcing bar at the top. A rectangular table (2) that can be used, a maguri (3) that is installed along the edge of the table and has the outer shape of the matching end of the plate (3), H-beam columns (4) installed at appropriate intervals on both sides in the transverse direction, vertical It includes an H-beam column (5) installed to be spaced apart in the direction. Each of the transverse H-beam pillars 4 protrudes inward and includes a pedestal 41 that is movable vertically along the transverse H-beam pillar 4, and the pedestal 41 includes a horizontal beam (6). ) Are installed in parallel, the top plate is placed between the horizontal beams 6, and includes a bracket 7 placed over the top plate and the horizontal beams 6 in the longitudinal direction. Such a device makes it easier to manufacture a wall having two symmetrical plates.

Recycled concrete laminated slab containing prestressed FRP tendon fiber and manufacturing method thereof

本发明涉及一种含预应力FRP筋束纤维再生混凝土叠合板及其制作方法，包括混凝土下板体，该混凝土下板体内架设有横纵交错的钢筋骨架，钢筋骨架上端均布有若干呈倒V型的凸筋，所述凸筋V口朝下并于端部固连在钢筋骨架上，凸筋顶端凸出混凝土下板体并与浇筑于混凝土下板体上端的混凝土上板体结合，所述混凝土下板体内预埋有若干沿水平方向平行设置的预埋管，所述预埋管孔内插设有FRP筋束，该混凝土叠合板加强了上、下混凝土板体间的连接，保证连接处混凝土的协调变形，防止预制混凝土叠合板的整体性不足所带来的不利影响。

Method of manufactring concrite block using waste vinyl and plastic

The present invention relates to a method for manufacturing concrete blocks using waste plastic film and waste plastic, which manufactures high-strength concrete blocks. According to the present invention, the method comprises the following steps: melting and extruding a recycled mixture of waste plastic film, waste plastic, waste wood, and a binder to form a rod-shaped molded body; cutting the molded body to a predetermined length to form a recycled frame suitable for a block size; placing the formed recycled framework in a block mold; filling the inside of the block mold with a mortar mixture; compacting the mortar mixture filled in the block mold; curing the compacted mortar at room temperature so that the mixture hardens to form a concrete molded body; and separating the cured concrete molded body from the block mold and drying the separated concrete molded body.

METHOD AND DEVICE FOR MANUFACTURE OF CONCRETE HOLLOW ELEMENTS

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 131 101 A (51) МПК B28B 23/04 (2006.01) B28B 15/00 (2006.01) B28B 23/02 (2006.01) B28B 5/04 (2006.01) B28B 7/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018131101, 29.08.2018 (71) Заявитель(и): ФОЛЛЕРТ АНЛАГЕБАУ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ФОЛЛЕРТ Ханс-Йорг (DE) 20.11.2017 DE 10 2017 127 283.6 Адрес для переписки: 129090, Москва, ул. Большая Спасская, д. 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" Стр.: 1 A 2 0 1 8 1 3 1 1 0 1 R U A (57) Формула изобретения 1. Способ изготовления бетонных полых элементов, имеющий следующие этапы, в частности методом циркуляции: a) предоставление поддона (15); b) установка элементов (16, 17) опалубки на поддон (15); c) транспортировка поддона (15) в станцию (5) армирования, в которой в пространство, заданное поддоном (15) и элементами (16, 17) опалубки, закладываются и предварительно натягиваются напрягающие проволоки (19); d) транспортировка поддона (15) в станцию (7) бетонирования, в которой в пространство, заданное поддоном (15) и элементами (16, 17) опалубки, заливается по меньшей мере один первый слой бетона; e) ввод стержневых элементов (21) в пространство, заданное поддоном (15) и элементами (16, 17) опалубки; f) заливка по меньшей мере одного другого слоя бетона в пространство, заданное поддоном (15) и элементами (16, 17) опалубки; g) транспортировка поддона (15) в станцию (11) твердения, в которой бетон затвердевает; и h) транспортировка поддона (15) в станцию раскрепления, в которой напрягающие проволоки (19), в частности одновременно, раскрепляются. 2. Способ по п.1, отличающийся тем, что на этапе c) напрягающие проволоки (19) проводят через отверстия по меньшей мере в двух находящихся друг напротив друга элементах (16) опалубки и на стороне этих элементов (16) опалубки, обращенной от пространства, заданного поддоном (15) и элементами (16, 17) опалубки, ...

Method and device for manufacturing of concrete hollow elements

FIELD: construction. SUBSTANCE: invention relates to method and device for production of concrete hollow elements, in particular, for production of parts of prefabricated elements, such as ceilings or walls. Proposed method comprises furnish of tray, installation of elements of moulding on tray, transportation of tray to reinforcement station where tensioning wires are laid and pre-tensioned in space defined by tray and elements of formwork. At that, at the stage tension wires are fixed in a tension stop, which to create preliminary tension moves relative to the tray in the first direction, indicating from the manufactured concrete hollow element. After creating pre-tension in tension wires between tension stop and tray, at least one retaining cantilever and/or at least one hydraulic punch is inserted. Tray is transported to the concreting station, wherein at least one first concrete layer is poured into the space defined by the tray and the formwork elements. Rod elements are inserted into the space defined by the tray and the formwork elements. At least one other concrete layer is poured into the space defined by the tray and the formwork elements. Pallet is transported to hardening station where concrete hardens. Tray is transported to the detachment station, in which tensioning wires, in particular, simultaneously, are detached. Device has at least one cleaning station, at least one formwork station, at least one reinforcement station, at least one concreting station, at least one hardening station or hardening chamber and at least one decanting station. Besides, the device also contains transportation device for transfer of trays between separate stations. EFFECT: technical result is higher efficiency of prefabricated units’ parts production. 7 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 718 743 C2 (51) МПК B28B 23/04 (2006.01) B28B 15/00 (2006.01) B28B 23/02 (2006.01) B28B 5/04 (2006.01) B28B 7/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ ...

Laminated preparation method of trough plate

本发明公开了槽形板的叠层式制备方法，包括如下步骤：(1)对地模进行清洁，并准备好边模和预应力锚具；(2)在地模上表面、边模的内侧面刷涂隔离剂或者覆盖隔离膜；(3)在预应力锚具之间张拉一组钢筋；(3)在地模上安装槽形芯模，再在钢筋内侧通过一对定位卡子定位，防止气囊左右移动和上浮；(4)在钢筋上连接钢筋保护层垫块或预埋件；(5)生产流态混凝土并将其浇注到边模之间，在填充一部分流态混凝土以后进行振捣密实，然后填充保温层，在保温层填充完成后再次浇注混凝土，完成单层槽形板的制作；(6)将浇注成型的槽形板静置1‑3小时后，表面收光；(7)对槽形板进行蒸汽养护或自然养护；(8)留置试件检测；(9)在上一层成型的槽形板上铺设隔膜，再次在预应力锚具之间张拉一组钢筋，并再次固定连接边模，重复步骤五至八，进行下一层槽形板的制备；(10)重复步骤9，使得槽形板层叠层数为3‑6层。本发明提供了的制备方法工艺简单，能够在短时间内制备多块槽形板，有效的降低了制备槽形板时的占地面积。

Method of making prestressed ferroconcrete element

Panel from cement building mortar with prestressed biaxial reinforcement and method of its manufacturing

FIELD: construction. SUBSTANCE: panel from a cement building mortar with a pre-stressed biaxial reinforcement is formed by means of a board from a cement building mortar, which, having thickness in the range from 2 to 7 cm, includes a biaxial reinforcement. The board contains a mass of a cement building mortar, multifunctional operating facilities on a panel assembly, providing for its displacement and/or attachment to a building structure. Multifunctional operating facilities represent at one side facilities for their retention in the hardened mass of the cement building mortar, and on the other side, opposite to the first one, facilities of anchor fixation either for elements for panel displacement or for elements for its attachment to a building structure. EFFECT: invention provides for the panel integrity during its transportation. 31 cl, 17 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 452 825 (13) C2 (51) МПК E04C 2/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009146061/03, 03.12.2007 (24) Дата начала отсчета срока действия патента: 03.12.2007 (73) Патентообладатель(и): ФРАДЕРА ПЕЛЬИСЕР Карлос (AD) R U Приоритет(ы): (30) Конвенционный приоритет: 14.05.2007 ES U200700993 11.10.2007 ES U200702060 (72) Автор(ы): ФРАДЕРА ПЕЛЬИСЕР Карлос (AD) (43) Дата публикации заявки: 20.06.2011 Бюл. № 17 2 4 5 2 8 2 5 (45) Опубликовано: 10.06.2012 Бюл. № 16 2 4 5 2 8 2 5 R U (85) Дата начала рассмотрения заявки PCT на национальной фазе: 14.12.2009 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: US 2002059768 A1, 23.05.2002. US 5138813 A, 18.08.1992. US 5239798 A, 31.08.1973. JP 2005307649 A, 04.11.2005. US 3943676 A, 16.03.1976. ES 2217948 A1, 01.11.2004. SU 1143817 A1, 07.03.1985. (86) Заявка PCT: ES 2007/000706 (03.12.2007) (87) Публикация заявки РСТ: WO 2008/139003 (20.11.2008) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат. ...

Precast prestressed floor production mould, production equipment and production technology

本发明公开了一种预制预应力楼板生产模具，包括预制板底模、侧模和经、纬交错分布在预制板底模、侧模内的预应力钢筋和分布钢筋，预应力钢筋两端紧固在固定台和张拉机构上，所述分布钢筋的两端固连侧模，张拉机构包括液压伸缩装置、张拉板和张拉端头板，液压伸缩装置的固定端固连固定柱，液压伸缩装置的伸缩端固连张拉端张拉板，张拉端张拉板通过锚具固连预应力钢筋的一端，当加载预应力时、液压伸缩装置的伸缩端回缩、预应力钢筋绷紧在固定台和张拉机构之间，张拉端头板上设有与预应力钢筋分布间距相当的齿槽，当张拉端头板架设在侧模间时，张拉端头板和侧模合围成一个四周封闭的灌注容腔。该设备能够快速、高效地完成预制预应力楼板的生产，且通过蒸汽养护，能够让构件快速形成强度，后期不容易产生裂缝。

Local steel bar truss prestressed concrete laminated bottom plate and manufacturing method thereof

本发明公开了一种局部钢筋桁架预应力混凝土叠合底板及其制作方法，包括预应力混凝土叠合底板和局部钢筋桁架。其中，预应力混凝土叠合底板包括混凝土板和沿纵向预埋在混凝土板内的预应力筋；局部钢筋桁架的下部预埋在混凝土板内，局部钢筋桁架的上部位于混凝土板外，局部钢筋桁架沿纵向布置于预应力混凝土叠合底板的跨中施工临时支撑处。相比于现有技术，本发明通过局部钢筋桁架抵抗由于支撑产生的反向弯矩，制作简单，应用灵活，在满足工程应用跨度的需求下，达到施工无支撑或少支撑的目标，解决现阶段由于施工支撑和全长钢筋桁架布置造成的叠合楼板成本较高的问题。

Tensioning nut positioning device for end-plate-free precast pile and using method

本申请公开了一种无端板预制桩张拉螺母定位装置及使用方法，无端板预制桩张拉螺母定位装置包括限位内环、保护外环以及弹性连接件，弹性连接件的一端固定于保护外环的内壁，另一端与限位内环相切并固定，限位内环与保护外环同心设置并通过弹性连接件连接在一起；限位内环开设有限位通孔。该装置通过弹性连接件将限位内环与保护外环连接成一个环向均匀分布的同心圈定位装置，外侧的保护外环可以避免桩端锐角被碰坏；每个张拉螺母可以被固定在限位内环上的限位通孔内，张拉螺母得以在三维上被约束固定，既不能转动也不能轴向窜动，使得安装张拉螺丝时，可以直接用多个风炮旋紧多个张拉螺丝，一次就能同步锁紧张拉螺丝，效率非常高。

Pre-tensioned rail plate flowing water unit method produces tooling device and method

本发明公开了先张轨道板流水机组法生产工装设备及方法，该工装设备包括轨道板模具、张拉杆、张拉装置、浇注装置、振动装置、蒸养装置、放张装置和脱模装置。运用本发明所述的先张轨道板流水机组法生产工装设备，其生产轨道板采用能够重复使用的模具，以及适应该模具的对轨道板张拉、放张和脱模的装置，能够从模具底部顶升抬起其中轨道板，使模具与轨道板分离，达到模具使用时固定不拆卸的目的，该工装设备相对现有技术理念先进，机械化程度高，减少轨道板生产过程中对人力的需求量，提高轨道板生产效率，由于使用的模具不必在每张轨道板生产前后单独合模和拆模，使得模具所生产的轨道板一致性良好。

Manufacturing and construction method of assembled prestressed anchor cable frame beam for slope reinforcement

本发明涉及用于边坡加固的装配式预应力锚索框架梁制作及施工方法，本发明的装配式预应力锚索框架梁，可改善梁的截面性能，可以承受更大的锚固力，解决了传统现浇的钢筋混凝土格构梁在遇到锚索锚固力较大情况时，可能在跨中位置被拉裂而导致构件在降水频发地区钢筋易被腐蚀，刚度下降的缺陷；力学性能大大提高。还可降低梁体的厚度或减少受力钢筋，提高材料利用率，从而更加经济。预应力锚索框架梁由若干预制梁体单元相互拼接而成，梁体单元制作更加简易、安装更加轻便、且安装时容易调节，施工周期大大缩短。

Uniform heating system for curing concrete using microwaves and construction method of concrete structure using same

The present invention relates to a uniform heating system for curing concrete using microwaves and a construction method of a concrete structure using the same. More specifically, provided are a uniform heating system for curing concrete using microwaves and a construction method of a concrete structure using the same, which can reduce initial hydration time of concrete poured into a mold by heating the mold by using a highly efficient uniform heating system generating heat using microwaves when precast concrete, such as bridge foundations (piers, abutments), slabs of buildings such as apartments, houses or office buildings, concrete linings of tunnels, bridge decks, girders, boxes, beams, culverts, retaining walls, posts, track slabs, concrete sleepers, and so on are manufactured and constructed, thereby remarkably reducing a construction period of a concrete structure in low outdoor temperature environments, especially, in wintertime or in extremely cold regions, and considerably removing poor construction and improving workability.

METHOD, DEVICES, MOLD-SUPPORTING STRUCTURES AND FACILITIES FOR IMPROVING THE EFFICIENCY OF PROCESSES FOR THE MANUFACTURE OF PRE-STRESSED CONCRETE PRODUCTS

ON UTILISE QUELQUES ECRANS AUTOPORTANTS DE FERMETURE DES TETES DE MOULES ET, QUELQUES ECRANS AUTOPORTANTS DE SEPARATION ES, DES DISPOSITIFS DE MISE EN PLACE EN GROUPE, ET DE MISE EN TENSION EN GROUPE MT, ET UNE SERIE D'INSTALLATIONS NOUVELLES DE TRAITEMENTTHERMIQUE DE CHOC, DEMOULAGE ET EVACUATION QUI, PAR RAPPORT AUX PROCEDES CONNUS, AMELIORENT D'UNE PART LE PROCESSUS DE FABRICATION ET QUI, D'AUTRE PART, PERMETTENT DE DEVANCER, DANS CERTAINS CAS, LE DEMOULAGE.

Concrete member high-precision bearing foundation

一种砼构件高精度承重底胎，其特征在于所述承重底胎包括钢板组成的箱型断面的钢构体，所述钢构体的上端面分布设置圆形凹槽和矩形凸台，钢构体的侧面设置多个用于液压顶推装置设置的凹槽，钢构体内灌注混凝土。该砼构件高精度承重底胎结构设计合理，实现高精度定位和承重。其能够精确的实现底胎上表面的调整，能够满足大型砼构件的承重要求，并可以精确定位砼构件内部预埋件的平面位置，形成混凝土构件地面所需形状和平整度。

Tension-head for tightening concrete reinforcements - consists of a mobile trimmer and double acting hydraulic jacks

One of the ends of the reinforcement being pulled is fixed onto a mobile trimmer box. The hydraulic device consists of two double-acting jacks, one of which is directly connected to the fluid source, and the other is connected to it by means of an intermediate constant volume cylinder and piston. The hydraulic device exerts on the trimmer a translation movement perpendicular to its lengthwise direction, as a result of the automatic and permanent balancing of two forces applied to it. The jacks and the cylinder-piston device are connected to the fluid source by a distributor with slide-valve. A screw and nut arrangement for each jack keeps the reinforcement taut, after the force exerted on the trimmer has been released.

Method of tensioning reinforced concrete reinforcements

Threaded concrete prestress member fastener - has fixed unit braced against all round movable spherically ended roller cage

The concrete prestressing member with end thread is tensioned by a press which has its fixed part supported against this member. A spherical nut is screwed onto the thread, acting in conjunction with a shell-shaped mounting face on the end of the building element. The fixed part (5) of the clamping press (4) is supported against a roller cage (13) via a spherical end face (12a). The cage is displaceable in all directions, relative to the prestressing member (5), against the building element (A) end face (A1). The fixed part of the press can be annular piston directly supported against the roller cage.

Cable anchorage traverse for prestressed concrete beam prodn. bed - has inner edge key-hole slots receiving wedged cable ends

The anchorage system for prestressing beds has a static and a movable transverse anchor beam at opposed ends of the line. The bed is for the prodn. of precast prestressed concrete beams (5) and the anchor beams are used to anchor and apply tension to the steel stressing cables (C). The anchor beams have open ended key-hole sockets (8) on their inner upper edges to locate the cable ends. The system reduces the quantity of cable wasted. The anchor sockets (8) are of key-hole shape in plan aligning on the cable (C) axis, with the stem opening out onto the inner anchor beam (6) face and receive the cable end with attached wedge. The width of the bed may be subdivided into relatively narrow sections (1) with individual anchor beams (6) to each section. The mobile anchor beam (6) may be guided by roller (14) in rails (12) and displaced by a jack (15, 16) at each end. The jacks (15, 16) acts between the inner face of the anchor beam (6) and thrust blocks (3, 4) which flank the end of the subject beam (5).

Construction process for concrete elements

Patent FR2122936A5

Patent FR2375971B1

Improvement in the manufacture of curved hollow elements such as aerodyne elements

Installation and method for tensioning cables in order to produce, on track, articles manufactured from prestressed reinforced concrete

The invention relates to the manufacture of prestressed concrete articles. The prestressing cables (4) are mounted in reels (8) on a carriage (3) which moves along the concrete-casting track, and their ends are fixed to an arm (10) articulated on the carriage and controlled in a vertical and horizontal movement by jacks (34). This arm places the cables in a bearing position on the lower plate of a vice (5, 6) on which an upper plate is then arranged for clamping the cables. The carriage then runs along the track, tensioning the cables, as far as the opposite end where it places the cables in another vice. Main application: articles made of prestressed concrete and cast on track.

Patent FR2106915A5

TENSIONER FOR REINFORCEMENT IN PREFABRICATED CONCRETE ELEMENTS

Patent FR2163382B1

Reinforced concrete

PRECONTROL BENCH FOR PREFABRICATION OF A CONCRETE STRUCTURAL ELEMENT AND METHOD OF IMPLEMENTING SUCH A BENCH

La présente invention concerne un banc de précontrainte (1), pour la préfabrication d'un élément structurel en béton, le banc de précontrainte (1) s'étendant entre deux extrémités longitudinales (1A) et comportant des torons (30), ainsi que des moyens (40) de tension des torons (30) entre les extrémités longitudinales (1A), à travers un coffrage prévu pour former l'élément structurel. Le banc de précontrainte (1) est caractérisé en ce que les moyens de tension (40) comprennent un système de précontrainte inférieur (60) et un système de précontrainte supérieur (80), configurés pour mettre en tension puis détendre respectivement des torons inférieurs (36) et des torons supérieurs (38), de manière à précontraindre une partie inférieure et une partie supérieure de l'élément structurel. L'invention concerne également un procédé de mise en œuvre d'un tel banc de précontrainte (1). The present invention relates to a prestressing bench (1), for prefabrication of a concrete structural element, the prestressing bench (1) extending between two longitudinal ends (1A) and comprising strands (30), as well as means (40) for tensioning the strands (30) between the longitudinal ends (1A), through a formwork intended to form the structural element. The prestressing bench (1) is characterized in that the tensioning means (40) comprise a lower prestressing system (60) and an upper prestressing system (80), configured to tension and then respectively relax lower strands ( 36) and upper strands (38), so as to preload a lower portion and an upper portion of the structural member. The invention also relates to a method of implementing such a prestressing bench (1).

Process for the execution and tensioning of steel reinforcements for prestressed structures

Construction process for prestressed reinforced concrete columns

Manufacturing process of pre-stressed concrete castings with tensioned adhesive reinforcement before concrete pouring

Process for the tensioning of metal reinforcements, more particularly for the manufacture of elements made of pre-compressed cement conglomerate

Prestressed pretensioned concrete beam making plant - uses expanding inverted Frame jacked down from portal to tension wires

Prestressed pretensioned concrete beam making plant uses an expanding inverted 'V' frame (4e to tension the stressing wires (12). The frame has a pinned joint (6) at the top and is expanded by a jack (8, 9, 11) on a fixed portal frame (7) pressing down on the apex of the 'V' members so that their rounded ends slide over a falt surface (1) below. The wires (12) extend between the lower ends of the 'V' members where they are attached to end plates (5). After the 'V' frame has been jacked down and the wires tensioned, the concrete unit is cast embedding the wires. When the concrete has set the 'V' frame is released. The wire anchorages may include end plates (5) with keyhole slots anchorage plates (3) and packing plats (18). The wires may have end anchorage nipples (15). The equipment may include formwork for the concrete pouring.

INDEPENDENT MODULE FOR MANUFACTURING PRE-STRESSED CONCRETE AND ITS IMPLEMENTING METHOD.

Apparatus of manufacturing pretensioned concrete member and method of manufacturing pretensioned concrete member using the same

본 발명은 프리텐션 콘크리트 부재 제작 장치 및 이를 이용한 프리텐션 콘크리트 부재 제작 방법에 관한 것으로서, 본 발명의 일 실시예에 따른 프리텐션 콘크리트 부재 제작 장치는 긴장재를 미리 인장시킨 상태에서 긴장재가 매립되도록 콘크리트를 타설하여 거더 부재를 제작하는 프리텐션 콘크리트 부재 제작 장치로서, 거더 부재를 제작하기 위한 거푸집이 안착되는 거푸집 바닥판, 상기 거푸집 바닥판의 하측에 연결되며, 긴장재를 미리 인장시킨 상태에서 반력을 지지하는 반력빔, 상기 거푸집 바닥판과 상기 반력빔 사이에서 상기 반력빔과 교차하는 방향으로 결합되는 거치빔, 상기 거푸집 바닥판을 통해 제작된 거더 부재를 탑재하여 제1 레일부를 따라 이송하는 제1 이송부, 및 상기 제1 레일부의 말단까지 이송된 거더 부재를 상기 제1 이송부로부터 전달 받으며, 제2 레일부를 따라 거더 부재를 적재장소까지 이송하는 제2 이송부를 포함한다. The present invention relates to an apparatus for manufacturing a pre-tensioned concrete member and a method for manufacturing a pre-tensioned concrete member using the same, wherein an apparatus for manufacturing a pre-tensioned concrete member according to an embodiment of the present invention includes: A method for manufacturing a pre-tensioned concrete member for constructing a girder member by pouring, comprising the steps of: forming a decking plate on which a formwork for making a girder member is seated; connecting the decking member to a lower side of the decking plate; A first conveying unit for mounting a girder member manufactured through the formwork bottom plate to carry along the first rail unit, a first conveying unit for conveying the girder member along the first rail unit, And a girder member transferred to a distal end of the first rail portion, Along the second rail, receive transmission from a second transfer unit for transferring to the girder member loading place.

Temporary holder and lock for carbon fibre reinforced plastic reinforcing rods comprises conical segment jaws tensioned inside sleeve

The holder and lock for a round section carbon fibre reinforced plastic (CFRP) reinforcing rod (4) with an outer surface coating of ceramic sand, consists of a sleeve (1) with a conical inner surface containing at least three locking jaws (3) in the shape of cone segments. The holder and lock for a round section carbon fibre reinforced plastic (CFRP) reinforcing rod (4) with an outer surface coating of ceramic sand, consists of a sleeve (1) with a conical inner surface containing at least three locking jaws (3) in the shape of cone segments. The jaws are separated by radial slits (6) and have a cylindrical inner channel (5) of smaller diameter than the reinforcing rod. The sleeve is tensioned by a nut (8) on its outer threaded surface (7), tightening the jaws and tensioning the reinforcing rod.

Patent FR2507232B1

Manufacturing process of reinforced concrete hollow bodies and devices intended for its implementation