Innovative PSC simple bridge construction method

, Exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same elements are designated by the same reference numerals even though they are depicted in different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

It is also possible. In describing the components of the embodiments of the present disclosure, there may be terms like the terms 1, A 2, A, B, (a), (b), and the like. Each of these terminologies is not used to define an essence, order or sequence of a corresponding component but used merely to distinguish the corresponding component from other component. It will be understood that when an element is referred to as being 'connected' or 'coupled' to another element, it can be directly connected or coupled to the other element or intervening elements may be present.

1 To 5, an innovative PSC simple bridge construction method according to an exemplary embodiment of the present invention will be described in detail.

To FIG. 1. Example 1 of the innovative PSC simple bridge construction method according to an embodiment of the present invention produces PSC girder (1) and a prestressing girder (1) on PS-steel, each of which is 10-prestressed each of the girders (1). A girder bridge stage having temporary abutments in alternating and alternating angles and supporting the girders (1) over the temporary pedestals. The method of claim 1, wherein the bottom plate concrete (20) is placed over the upper part of the girder. Each of the girders 1 with PS steel 10; and tensioning the girder 2. The girder (1) is mounted on the bridge support by precisely adjusting the bridges in the abutment and the pier and removing the temporary abutments. The construction can be performed in the order.

The girder manufacturing step is performed. PSC girder (1) is prestressed into PS steel (1) in the production plant, and each of the fabricated girder (10) is subjected to a second tension of the PS steel (A) 1. PS steel 10 may be horizontally installed under a lower side or may include both of them. This is to counteract the moment acting on PSC girder 1. The girders 1 may include a transport process for transporting the fabricated girders 1 to a bridge construction site when the construction field of the bridge is remote from the construction site of the bridge.

The girder bridge step is a step of installing temporary abutments in alternating and alternating angles and holding girders (1) over the temporary pedestals. The girders of the girders 1 are generally constructed by lifting the girders 1 with a crane or the like and placing them in an alternating and alternating manner.

On the upper side of the girders 1, a bottom plate concrete (20) is placed on the upper side of the girder. In this step, intermediate transverse beams may be formed intermediate the girders 1. The intermediate runners may be formed at least in part on the abdominal part of the girder 1. The upper portion of the girders 1 may be formed on the entire upper portion 20 of the girders of the intermediate crossbeam formation.

The tensioning step. Each of the girders 1 is a step of 10 nd tension to PS material 2. 2 Is a cross-sectional view of PS steel anchors 1 installed on a fixing block 11 on the side surface of the girth of the girders 111 after tension using a steel wire tensioner. The 2 st tension anchorage 111 may be formed at a location spaced apart from an end of the girder 1.

The step of supporting the girder 1 on the bridge pedestals is to precisely adjust the bridge support in the abutment and the pier, thereby removing the temporary support and mounting the girders 1 on the bridge pedestals.

After placing the girder 1 on the bridge pedestals, it may further be necessary to install a protective wall on both sides of the bottom plate concrete 20 and to provide waterproofing and packaging to the bottom plate concrete 20.

To FIG. 2, an exemplary embodiment 2 of the innovative PSC simple bridge construction method according to an exemplary embodiment of the present invention is described. PSC girder (11) having a concave anchorage block (1) above both ends and 1 prestressing each of the girders (10) into PS steel (1). A girder bridge stage having temporary abutments in alternating and alternating angles and supporting the girders (1) over the temporary pedestals. The method of claim 11, wherein the bottom plate concrete (1) is placed on the entire upper part of the girders except for the concave fixing block (20). The method of claim 11, 111, wherein each of the girders 1 is prestressed using a fixing tool 10 with PS steel (2). The method of claim 11 wherein 3 layers of composite waterproofing are constructed in the concave anchorage block. The method of claim 11, further comprising the step of placing 20 the bottom plate concrete at a portion of the concave anchorage block. The girder (1) is mounted on the bridge support by precisely adjusting the bridges in the abutment and the pier and removing the temporary abutments. The construction can be performed in the order.

The construction method described in the first embodiment 1 and the same construction method as described in the first embodiment can be omitted. It is also possible. The construction method described above may be applied to the above description.

The step of manufacturing a girder of the present embodiment is a step of fabricating PSC girder 11 having a fusing block 1 recessed above both ends and 1 pretensioning each of the girders 10 with PS steel (1). PS steel material 1 for the 10 nd stretch is the same as in the above-1 th embodiment. That is, PS steel 10 may be horizontally installed under the lower side or may include both of them. This is to counteract the moment acting on PSC girder 1. The girders 1 may include a transport process for transporting the fabricated girders 1 to a bridge construction site when the construction field of the bridge is remote from the construction site of the bridge.

On the upper side of the girders 1, a bottom plate concrete (20) is placed on the upper side of the girder. In this step, intermediate transverse beams may be formed intermediate the girders 1. The intermediate runners may be formed at least in part on the abdominal part of the girder 1. This step is performed. Unlike the above-described exemplary 1, the bottom plate concrete (11) may be poured over the entire remaining section except for the concave fixing block (20). Namely, by not placing the bottom plate concrete 1 on the fixing block 11 formed at both upper ends of the girders 20, it is possible to smoothly perform the 2 st tension in the tensioning step described later.

In the tensioning step 1, each of the girders 10 is prestressed with PS steel 2. In the present step, PS steel (1) is fixed to a fixing tool (1) formed at both upper ends of the girder (11) differently than the above-described first and 111 th embodiments, and each of the girders 10 10 may be prestressed with PS steel (2 1).

PS steel 10 starts on one end upper side and protrudes downward in a center portion of each girder 1, and may be installed to be fixed to an upper side of the other end. , Anchors 2 for the 111 nd tension may be formed on the anchorage block 1 provided above the outer end of the girder 11 and the other end of the other end. The tension of PS steel 10 can be performed using a steel wire tensioner.

The waterproof step (see FIG. 3). In the concave anchorage block 11, 3 layers of composite waterproofing are performed. 3-layer waterproof layer 1 is formed by forming 1-layer waterproof layer on the upper side of the waterproof layer 2, and 2-layer asphalt waterproof layer is formed on the waterproof layer 3 3. By waterproofing the concave anchorage block 11 through the step, corrosion of PS steel (10), fixing equipment or the like is completely prevented, thereby increasing the life of the girder 1.

Further, 20 stages of waterproofing the top surface of the bottom plate concrete 2 can be performed. 2 Monotonicity can be effected after the additional floor plumbing step described below. That is, in the concave fixing block 11, the bottom plate concrete (20) is further poured, and then the concrete is added thereto. The top or bottom surface of the bottom plate concrete 20 may be watertight. The details 2 are the same as those of 3 layers described above.

The additional floor panel placing step is a step of placing the bottom plate concrete 11 on a part of the concave fixing block 20 20 to complete the pouring.

The cross-section of PSC girder 1 used in Example 2 and 1 may be manufactured in an enlarged section having a scale extended horizontally on both sides of a lower flange. The upper plate may have a lower rigidity than that of the lower plate.

In addition, each of the above-1 and 2 embodiments may further include 1-order tensioning of PS steel (10) convexly curved downwardly for each of the girders (3) after all of the steps are performed.

The 3 nd prestressing may be performed 1 by tensioning PS steel (3) convexly curved downwardly using 111 rd order anchorage (10) formed in each of the girders 3. Hence, the description thereof is omitted. Each of the girders 1 may further increase the tensile and compressive strength of each of the girders. 3 And 111 may be formed at both ends or ends of the girder 1 at a predetermined distance from each other.

Also, referring to FIG. 4 through 5, the step of manufacturing a girder of the above-described embodiments may include installing a fuser trumpet mold 30 for forming a fixing tool 31 for glass management. The fixing device trumpet mold 31 may be drawn into a fixing device trumpet mold drawing device 33 to form a fixing tool 30 for glass management. The anchorage trumpet molds (31) drawing may be carried out in a girder fabrication step or in other steps.

The fixing tool 30 for glass management refers to a hole capable of installing a steel trumpet which is a fixing device when tendon is further applied to PS material 1 to increase the rigidity of the girders 1 during long-term use of the girder 1 or to reinforce girders (10).

The fixing instrument trumpet mold 31 forms a mold for forming a fixing tool 30 for glass management. The outer peripheral surface may be formed into a shape to which the steel trumpet can be inserted and seated. For example, a tapered shape having a gradually reduced diameter may be formed in a forward direction.

The fixer trumpet mold 31 may be installed at various locations. For example, in 1 exemplary embodiments described above, a side fixing block 1 convexly formed in an intermediate portion between the girders 11 may be provided. Further, in the above 2-th embodiment, the lower flanges 1 of the girders 11 may be formed at the lower flanges or both sides of the anchorage blocks, respectively.

The anchorage trumpet mold 31 is installed in the fixing block 11 and is removed and removed after the concrete is hardened, thereby forming a fixing tool 1 for glass management in the girder 30.

The fuser trumpet mold 31 can be easily drawn in the fixing block 33 by a fixing device trumpet mold drawing device 11 described later.

To FIG. 4. The fixing instrument trumpet mold drawing device 33 is coupled to the fixture trumpet mold 31 and extends to the rear part (331). The connecting rod 331 and the reaction plate 333, respectively. A hitting sight (331) which is installed to be slidably mounted on the connecting rod 335. May be included.

The connecting rod 331 may be coupled to the fixer trumpet mold 31. Connecting rod (331) and fixing instrument trumpet mold (31) are joined together. The coupling bolt and the coupling plate fixer may be included.

The rear part of the fixing hole trumpet mold 31 may be formed of a plastic material. The bonding coupling plate 31 may be formed in a plate shape or a strip shape. The bonding plate 31 may be formed to have a size substantially reduced in consideration of only a minimum combination with the fixer trumpet mold.

A through-hole through which the connection rod 331 may penetrate may be formed at a central portion of the bonding connection plate. The connection rod 331 may be coupled to the front end of the coupling plate. The connection plate fixing hole may have a diameter larger than a diameter of the central through hole.

The connection rod 331 may be coupled with a reaction plate 333. The connection rod 331 may be installed so as to be slidable with respect to the striking force chain 335. The hitting sight chain 335 may have a hole formed in a center portion to be slidable after the connection rod 331 is inserted. The impact gangling chain 335 is rearward, i.e. on the connecting rod 331. The anchorage trumpet mold 333 embedded in the fixing block 11 may be drawn by repeatedly sliding and hitting the reaction plate 31. The striking force chain 335 may be hit by the worker in the direction of the force plate 333 by hand. This striking work can be drawn very efficiently by exerting a force exactly rearward to the fixer trumpet mold 31.

To FIG. 5, another embodiment of the fixer trumpet mold drawing device 33 includes a triangular bracket 335, which is installed between both ends of the hitting sighting chain 331 and slidably movable in the connection rod 2, and a pair of hydraulic jacks 337 339 installed between both ends of the triangular bracket 11 335 and the fixing 40 block 2. The 40 hydraulic jack 337 is characterized by striking or pressing 339 the trigonal bracket 339.

(2) The striking force chain 337 may be installed to be slidably movable on the front connecting rod 335 of the hitting sighting chain 331. The striking-sight chain 335 and the (2) th striking-point chain 337 may be connected to each other by a triangular bracket 339. In other words. The trigonal bracket 339 may be integrated with the impact-sight chain 335 and the (2)-th striking-point chain 337 to behave or press the reaction plate 333. The triangular bracket 339 may be formed by combining a pair of bracket 335 brackets inclined forward to both sides of the hitting sighting chain 1, and a pair of right 2 brackets which are installed in the left and right directions in both sides of the (337). 2.

The pair of hydraulic jacks 1 may be installed at both vertices at which the (2) bracket and the (40) bracket meet each other. That is, the hydraulic jack 1 may be installed at each of both ends of the coupling portion guide triangular bracket 2 to which the bracket 339 and the bracket 40 are coupled.

The hydraulic jack 40 may hit or press the triangular bracket 339 to strike or press the reaction plate 331 coupled to the rear part 333, so that the fixer trumpet mold 335 may be easily drawn from the fixing block 31 11.

, By forming the fixing tool 1 for glass management on the girder 30 through the above configurations, the fixing tool for glass management is formed. A girder (1) and a PS steel (10) are further provided in the bridge for long-term use of the bridge. Furthermore, it is possible to save the cost incurred by previously installing a steel trumpet which may not be used and which may not be used.

It will be understood that, although the terms first, second, etc, may be used herein to describe various elements, these elements should not be limited by these terms. That is, within the scope of the present invention, all the components may be selectively combined or operated as one or more components. It will be understood that although the terms first, second, etc, may be used herein to describe various elements, these elements should not be limited by these terms. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. All the terms that are technical, scientific or otherwise agree with the meanings as understood by a person skilled in the art unless defined to the contrary. It will be understood that, although the terms first, second, etc, may be used herein to describe various elements, these elements should not be limited by these terms.

Although exemplary embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Hence, the description thereof is omitted. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It will be understood that, although the terms first, second, etc, may be used herein to describe various elements, these elements should not be limited by these terms.