KR101941942B1 - Integrated form structure for constructing cantilever slab and protective wall of bridge, and construction method using the same - Google Patents

Abstract

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

Description

Technical Field [0001] The present invention relates to a cantilever slab for bridges, a monolithic formwork for constructing a barrier wall, a cantilever slab using the same and a method of constructing a barrier wall,

The present invention relates to a cantilever slab and a barrier wall construction of a bridge, and more particularly, to a cantilever slab of a bridge, a protective wall formwork, a formwork support structure of a rectangular bracket structure, The present invention relates to a cantilever slab and a method of constructing a barrier for a bridge using the same, which is formed integrally with a form support block having a plurality of form support structures.

In general, the construction of a bridge is accomplished by first completing a bridge substructure such as an alternating or piercing bridge, installing a girder in longitudinal direction (longitudinal direction) on the alternating and / or piercing bridge, A plurality of bridges are installed on the upper part of the girders, and a bridge slab form is installed on the bridges.

Next, the reinforcing bars are placed in the longitudinal and transverse directions inside the bridge slab formwork to complete the final bridge slab by pouring the bridge slab concrete. The work for the bridge and formwork for the bridge slab, Because the bridge is made up of several tens of meters of elevation and the upper part of the bridge, it is necessary to pay attention to the safety management because it is accompanied by the elevation work, and the workability due to the installation and dismantling of the bridge slab and the formwork is very low. The workability of the bridge slab is lowered, the air (construction period) is inevitably delayed, and the construction cost is inefficient.

1 is a sectional view of a bridge cantilever slab according to a conventional technique.

A bridge slab form called a bridge deck 13 is provided between the girder 12 provided on the alternate bridge 11 and the girder 12 in a simple supporting manner and the bridge deck 13 (Half Depth Type) in which an additional reinforcing bar 14 is placed on the upper surface of the bridge slab 13 and a bridge slab is installed through the installation of the bridge slab concrete 15 has been introduced.

This method is advantageous in that it is possible to omit the installation work for installing a bridge slab for a bridging slab form, but this method is inevitably necessary for the construction of the cantilever slab 16 formed at both ends of the bridge slab There has been a problem that the cantilever slab-use flat bar 17 and the die 18 must be installed. Here, a cantilever slab refers to a slab having one end fixed and the other end free.

On the other hand, a barrier wall (railing) is installed at the end of the bridge cantilever slab to prevent a person or a vehicle from falling. Especially, in the case of a railway bridge, a joint for an electric wiring facility is installed together with a barrier wall.

The bridges of these bridges are laid on cantilever slab concrete and after curing, the exposed reinforcing bars are connected on the upper side of the cantilever slab, and the concrete is put into the field by assembling the formwork or the concrete is laid by the slipform paver . Therefore, it is only necessary to install a separate work foot plate outside the cantilever slab, and it is possible to assemble the wall formwork for the field installation. Also, since the concrete surface cleaning work can be performed after the fire wall construction, the work process is complicated, There is a possibility that there is an accident possibility and there is a problem that an installation cost is excessively increased.

FIG. 2 is a side view showing an installation state of a bracket for supporting a bridge cantilever slab formwork according to the related art.

Referring to FIG. 2, the bracket for supporting the bridge cantilever slab formwork according to the related art is composed of a triangular bracket fixed through a bolt passing through the end portion of the box-shaped girder BG, And can support the bridge deck form which is easy to dismantle.

Specifically, a vertical member 31 having a plate fixed to a flange of the box-shaped girder BG is provided at an upper portion thereof; A horizontal member 32 having one end thereof connected at a right angle to the upper end of the vertical member 31; An inclined material 33 which is connected to and fixed at both ends of the vicinity of a lower end of the vertical member 31 and a free end of the horizontal member 32; And at least one screw jack 34 which is vertically movably coupled to the horizontal member 32 and supports the yoke member 43 of the form F so as to ensure stability, The accident is prevented, the cost for installing the formwork is reduced, and a good concrete structure can be obtained. The plate F includes a plate member 41, a joist 42 and a yoke member 43. The plate member 41 is connected to the plate member 44 for forming a dentition, Reference numerals 31a, 32a and 33a denote fastening holes, and reference numeral 35 denotes a cushioning material.

3 is a photograph illustrating a conventional cantilever slab supporting structure.

As shown in FIG. 3, the bridge cantilever slab construction according to the related art is characterized in that after the form support structure of the triangular bracket structure is fixed to the upper side of the side surface of the girder, the long tails are arranged on the longitudinal direction of the bridge on the form support structure, After the slab is cured, a barrier wall for constructing a barrier wall is additionally installed at the end of the cantilever slab to construct a barrier wall.

Next, after such slab and barrier wall construction is completed, the form support structure is disassembled in the reverse order of the installation order.

However, in this case, since the form support structure for the cantilever slab construction must be individually fixed to the upper side of the girder, it takes a long time to complete the elevation work for installing the form support structure, and the elevation work for the barrier form construction is required Therefore, there is a problem in that the safety of the operator is difficult to secure, and the workability and productivity for forming the mold are greatly reduced

In addition, after the slab and barrier construction, the fixture of the form support structure fixed to the upper side of the girder is located under the cave slab eave. Therefore, in order to dismantle the form and form support structure, lifting equipment and over- Is greatly reduced.

Korean Patent No. 10-728106 filed on Sep. 15, 2006, entitled "Cantilever part mounting structure and construction method of bridge deck" Korean Registered Patent No. 10-1324982 filed on April 2, 2012, entitled "Method of constructing a foot bridge using a PS Seam girder with a joint fixing part" No. 20-226626 filed on Dec. 26, 2000 (filed on December 26, 2000), design name: "Bracket for supporting bridge deck formwork" Korean Patent No. 10-1144722 filed on November 3, 2009, entitled "Method of Construction of Precast Concrete Wall for Bridges" Korean Patent No. 10-469638 filed on Sep. 30, 2002, entitled "PSES-BEAM BRIDGE, Korean Patent Laid-Open Publication No. 2013-107872 (published on October 2, 2013), entitled "Haro Foot Bridge Construction Method"

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method of manufacturing a bridge cantilever slab and a barrier wall by fabricating a mold supporting structure of a rectangular bracket structure on the ground, arranging a plurality of the mold supporting structures And the cantilever slab and the barrier formwork are integrated with each other to form an integral type of formwork structure. Then, the cantilever slab and the barrier formwork are integrally formed, The present invention provides a cantilever slab of a bridge, an integrated die structure for a barrier wall construction, a cantilever slab using the same, and a method of constructing a barrier wall.

It is another object of the present invention to provide a method for dismantling a primary fixture by integrating a work scaffold for dismantling a primary fixture of a die support structure with a die support block, A cantilever slab of a bridge, an integral type die structure for constructing a barrier wall, a cantilever slab using the same, and a method of constructing a barrier wall.

Another object of the present invention is to provide a method for constructing a bridge structure for a mold structure for dismantling an integrated die structure by sequentially constructing a bridge slab and a barrier wall by installing a secondary fixture on a vertical member for a barrier formwork of a formwork supporting structure of a rectangular bracket structure, A cantilever slab of a bridge, an integrated die structure for constructing a barrier wall, and a cantilever slab using the same, which can be easily and safely dismounted from the die support structure, To provide a method of constructing a barrier wall.

According to the present invention, there is provided a cantilever slab of a bridge and a monolithic formwork structure for constructing a barrier wall, the cantilever slab including a cantilever slab form for constructing a cantilever slab and a barrier wall, A die support structure of a rectangular bracket structure for supporting the die; The form support structure includes a vertical member including a primary fastener in a rectangular bracket structure; A horizontal member coupled to an upper end of the vertical member; A reinforcing horizontal member coupled with a lower end of the vertical member; A reinforcing vertical member connected to one side of the horizontal member and the reinforcing horizontal member by an outer vertical member of the rectangular bracket structure; An inclined member arranged and joined between the horizontal member and the vertical member in an inclined manner; And a vertical member for a barrier formwork which is vertically coupled to the horizontal member to support the barrier form and in which a tie bolt through-hole of the secondary fixture is formed.

The cantilever slab of the bridge according to the present invention and the integral type die structure for constructing the barrier wall may include: a bolt for adjusting the spacing of the vertical member for the barrier formwork; And a gap adjusting bolt for supporting the lower portion of the vertical member at the lower portion of the girder side to adjust the gap between the form support structure and the girder.

A cantilever slab of a bridge according to the present invention and a monolithic mold structure for constructing a barrier wall comprise a mold support block in which a plurality of mold support structures are arranged at regular intervals and are bound to a longitudinal horizontal stiffener; And a scaffold for dismantling the primary fixture of the form support structure.

Here, the primary fixture may include a steel pipe installed at a connection portion between a cantilever slab form and a girder side so as to primarily fix the form supporting structure; A bolt fastened to the vertical section at the vertical end of the form support structure; And a nut fastened to the bolt.

The secondary fixture includes: a fixing hole embedded in the barrier wall, the di-con contacting the inside of the wall of the barrier wall; An L-shaped anchor bolt coupled with a reinforcing bar inside the barrier wall to fix the integral molded body in a secondary position and fastened to the de-cone; A body bolt connected to the other end of the de-cone to support the form support structure; A nut fastened to the other end of the body bolt; And a washer disposed under the nut.

The integral formwork structure is fixed to the primary fixture and the secondary fixture, and the cantilever slab and the barrier wall are sequentially installed. In the state where the secondary fixture embedded in the barrier wall is stably supported, It is possible to dismantle the primary fixture to be positioned under the cantilever slab and to disassemble the integrated fixture structure by separating the secondary fixture from the cantilever slab.

Here, after the integral formwork structure is dismantled, mortar may be filled in the recessed groove formed by the de-cone that has been embedded in the barrier wall, thereby finishing the surface of the barrier wall.

In another aspect of the present invention, there is provided a bridge cantilever slab and a barrier wall construction method using the integral formwork structure according to the present invention, comprising: a) a cantilever slab, a mold for constructing a barrier wall, A step of fabricating a monolithic die structure integrally formed with a die support block composed of a support structure and a work footplate for disassembling the die support structure; b) lifting the integral formwork and securing it to the primary fixture under the cantilever slab; c) arranging the assembly reinforcing bars for the slab construction of the bridge, and placing the concrete to construct the slab; d) installing a secondary fixture of the integral formwork structure together with a reinforcing bar reinforcement; e) constructing a barrier wall by pouring the barrier wall concrete; f) disassembling the first fixture using a work footrest for disassembling the form support structure, disassembling the second fixture of the fire wall, and disassembling the integrally formed mold structure; And g) finishing the surface of the barrier wall by filling the mortar with an embedding hole formed by a decon nut embedded in the barrier wall, wherein upon dismantling the form support structure, the first fixture is firstly disassembled The second fixture is disassembled in a space around the fire wall in a state in which the support structure for the form is stably supported by the second fixture.

According to the present invention, a large number of masonry supporting structures of a rectangular bracket structure for supporting a bridge cantilever slab and a wall formwork are manufactured on the ground, the masonry supporting blocks are formed by arranging the masonry supporting structures at predetermined intervals, The cantilever slab and the wall formwork are integrally formed in the formwork support block, and the integral formwork structure is manufactured. By collectively lifting the same, it is possible to minimize the work for installing and disassembling the formwork and the die support structure for slab and barrier wall .

According to the present invention, since the work footplate for dismantling the first fixture of the form support structure is integrally formed with the form support block, the operation of the elevating work and lifting equipment for dismantling the first fixture of the form support structure can be minimized.

According to the present invention, by disposing the secondary fixture in the vertical member for the wall formwork of the formwork supporting structure of the rectangular bracket structure, after the completion of the construction of the bridge slab and the barrier wall, the dismantling of the secondary fixture of the formwork supporting structure for disassembling the integrated- It is possible to safely and easily perform the disassembly work of the integral formwork structure.

1 is a cross-sectional view of a bridge cantilever slab according to a conventional technique.
FIG. 2 is a side view showing the installation state of a bracket for supporting a bridge slab formwork according to a conventional technique.
3 is a photograph illustrating a conventional cantilever slab supporting structure.
4 is a front view showing a bridge constructed using a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic die structure for constructing a barrier wall.
FIG. 5 is a perspective view showing a cantilever slab of a bridge according to an embodiment of the present invention and an integrated die structure for constructing a barrier wall.
6 is a front view showing a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic die structure for constructing a barrier wall.
FIG. 7 is a view showing a bridge including a cantilever slab of a bridge according to an embodiment of the present invention and an integrated die structure for constructing a barrier wall.
8 is a diagram specifically showing area A shown in FIG.
9 is a diagram specifically showing the area B shown in Fig.
10 is a diagram specifically showing the area C shown in FIG.
11 is a view showing a bridge in which a cantilever slab of a bridge according to another embodiment of the present invention and an integrally formed mold structure for constructing a barrier wall are installed.
12 is a view showing a bridge equipped with a cantilever slab of a bridge according to yet another embodiment of the present invention and an integrated die structure for constructing a barrier wall.
13 is a view showing a die structure for slab construction in a bridge having a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic formwork structure for a barrier wall construction.
14 is a flowchart illustrating an operation of a bridge cantilever slab and a method of constructing a barrier wall using the integrated formwork structure according to an embodiment of the present invention.
15A and 15B are photographs illustrating the construction of a bridge cantilever slab and a barrier wall by using the integral formwork structure according to the embodiment of the present invention, respectively.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Integrated formwork structure 300 for cantilever slab and barrier wall construction of bridges]

4 is a front view showing a bridge constructed using a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic formwork for constructing a barrier wall. FIG. 4a shows a general monolithic mold structure 300a, 4 (b) is a view showing a bridge constructed using a general integrated type mold structure 300a, a drainage channel, and a main rail forming integrated structure 300c.

As shown in FIGS. 4a and 4b, each of the integrated formwork structures 300a, 300b and 300c according to an embodiment of the present invention includes molds 310a to 310c for constructing a slab and a barrier wall, The girder 110 is provided on both sides of the girder 110 for the construction of the cantilever slab 130 and the barrier wall 140 of the bridge 100, The railway track 200 can be constructed after the installation of the slab 130 and the barrier 140, for example.

According to an embodiment of the present invention, a plurality of die support structures in the form of rectangular brackets are arranged at regular intervals on the ground, and then the longitudinal support members are connected to the longitudinal horizontal stiffeners to form a die support block. And the operation footrests are integrated to manufacture the integral type mold structure 300 and then the integral type mold structures are lifted as a whole so that a separate bracket for installing the cantilever slab 130 and the barrier wall 140 and a later- There is no.

As described later, the cantilever slab of the bridge according to the embodiment of the present invention and the integrally formed mold structure 300 for constructing the barrier wall are formed by two fixtures of the mold supporting structure of the rectangular bracket structure forming the integral mold structure, And the integral formwork structure is fixed by the step of constructing the barrier wall. The integral formwork structure is fixed to the upper side of the side of the girder by the primary fixture of the form support structure during the initial lifting, and supports the weight of the slab concrete during the construction of the bridge slab. After the slab construction, the fixed bolt and D- ), A secondary fixture formed of a tie bolt is installed inside the barrier wall, and when the barrier wall is constructed, a secondary fixture embedded in the barrier wall is formed.

After completion of the installation up to the barrier wall, the disassembly of the integral formwork structure 300 is performed in the same manner as the integral formwork fixation procedure. Since the integral formwork structure 300 is fixed by two fixtures of the form support structure, first, the primary fixture of the form support structure is disassembled from the operation footrest of the integrated formwork structure, The secondary fixture of the support structure is dismantled and the integral die structure is dismantled at once.

Referring to FIGS. 5 to 13, a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic mold structure for constructing a barrier wall will be described. Referring to FIGS. 14 and 15, A cantilever slab and a method of constructing a barrier wall using the integral formwork structure will be described.

FIG. 5 is a perspective view showing a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic formwork structure for constructing a barrier wall, FIG. 6 is a perspective view showing a cantilever slab of a bridge and a monolithic mold structure for constructing a barrier wall according to an embodiment of the present invention. Fig.

5 and 6, a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic die structure 300 for constructing a barrier wall includes a die 310 for forming a cantilever slab and a barrier wall, a die support structure 320 A work footplate 330 and a longitudinal horizontal stiffener 343 and also includes a primary fixture 350 and a secondary fixture 360.

The mold 310 is for constructing the cantilever slab 130 and the barrier wall 140 and includes a cantilever slab panel 313, a cantilever slab panel supporting brace 311, a barrier wall panel 314, (312), and the die is integrally formed with the die support structure.

The form support structure 320 is formed in a rectangular bracket structure with a vertical member 321, a horizontal member 322, an inclined member 323 and a reinforcing horizontal member 341 and a reinforcing vertical member 342, A vertical member 324 is further included. As described later, the integral formwork structures 300a to 300c are a structure in which a plurality of formwork supporting structures 320 are arranged at regular intervals, and the formwork 310 and the operation footboard 330 are integrally formed .

Specifically, the die support structure 320 includes a vertical member 321 adjacent to the side of the girder in the rectangular bracket structure and including a primary fixture fixed to the upper side of the girder side; A horizontal member 322 having one side joined to the upper end of the vertical member 321 by an upper horizontal member of the rectangular bracket; A reinforcing horizontal member 341 having one side joined to the lower end of the vertical member 321 by a lower horizontal member of the rectangular bracket; A reinforcing vertical member (342) connected to one side of the horizontal member and the reinforcing horizontal member as an outer vertical member of the rectangular bracket structure; An inclined member 323 slopingly disposed and coupled between the horizontal member 322 and the vertical member 321; And a vertical wall member 324 that is vertically coupled to the horizontal member to support the barrier form and in which a tie bolt through-hole of the secondary fixture is formed. A gap adjusting bolt 372 for adjusting the gap of the barrier wall form vertical member 324 and a gap adjusting bolt 371 for supporting the lower side of the vertical member at the lower side of the girder to adjust the distance between the form supporting structure 320 and the girder ).

The operation pedestal 330 is a safety pedestal installed for dismantling the primary fixture of the form support structure 320, and may be formed, for example, in a folding manner. Accordingly, the work foot plate 330 is integrated with the reinforcing horizontal member of the form supporting structure on the inside of the form support block composed of the plurality of form support structures 320 to form the integral type mold structure 300. It is not necessary to dispose a separate bracket and a hypothetical structure for constructing the cantilever slab 130 and the barrier wall 140 by assembling and assembling the integrally formed mold structure 300 as described above.

The reinforcing horizontal member 341 and the reinforcing vertical member 342 of the form support structure 320 of the rectangular bracket structure support the operation foot plate 330 and are members for securing the overall torsional rigidity of the rectangular bracket structure. And the connection between the reinforcing horizontal member and the reinforcing vertical member is connected by a steel pipe clamp and the connection between the vertical member 321 and the horizontal member 322 is welded by arc welding to secure the connection. Also, the longitudinal horizontal stiffeners 343 forming the form support blocks with the plurality of form support structures 320 are also arranged as steel pipe pipes having high section strength so that the external load can be sufficiently dispersed into the form support structure.

The primary fixture 350 is formed of a connection 351, a bolt 352 and a nut 353 at the upper end of the a-shaped steel vertical member 321 and is fixed to a connection portion at the upper side of the side surface of the girder 110, It is possible to support the weight of slab concrete due to the installation.

The secondary fixture 360 is a fixture composed of a body bolt, a D-cone, and an L-shaped anchor bolt. The D-cone is disposed inside the wall of the firewall wall, D-Cone) is connected to the reinforcing bars of the barrier wall, the body bolts are passed through the vertical member of the barrier formwork, the barrier formwork and the wall panel of the barrier wall to bind them to the D-cone, .

That is, a bolt hole is formed in the vertical wall member 324 for installation of the barrier wall mold 314, the wall member supporting wall 312 for supporting the wall wall panel and the wall wall panel 314, and the main body bolt is inserted into the barrier wall 140 The L-shaped anchor bolt 162 embedded in the barrier wall is fixed to the second fixing member 160 of the integrated mold structure 300 after the barrier wall is cured. The L-shaped anchor bolt 162 is connected to the D- (360). The dismantling of the secondary fixture of the integral formwork structure 300 can separate the integral formwork structure 300 from the structure by unscrewing the body bolts of the vertical formwork for the barrier formwork on the slab top plate. After disassembling the integral formwork structure 300, The D-Cone embedded in the protective wall is removed, and the cross-sectional loss by the D-Cone can finish the surface arrangement of the barrier wall through the mortar grooving.

In the state where the secondary fixture of the form support structure embedded in the barrier wall is stably supported after the barrier wall is cured, the primary fixture of the form support structure is disassembled from the operation foot plate of the integrated die structure, The secondary fixture of the form support structure embedded in the barrier wall on the cantilever slab is sequentially disassembled, for example, the integral formwork structure is connected to the heavy equipment in a secure manner. Then, the body bolt is loosened from the secondary fixture of the form support structure, D-Cone, it is possible to disassemble the integral formwork structure at once.

7 is a view showing a bridge equipped with a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic formwork structure for constructing a barrier wall, FIG. 8 is a view specifically showing area A shown in FIG. 7, 9 is a diagram specifically showing a region B shown in FIG. 7, and FIG. 10 is a diagram specifically showing a region C shown in FIG.

The secondary fixture 360 of FIG. 8 is a fixture embedded in the barrier wall 140, as shown by a reference A in FIG. 7, with a dia-con 361 in contact with the inside of the wall of the barrier wall. An L-shaped anchor bolt (365) coupled to a reinforcing bar inside the barrier wall to fix the integral workpiece structure (300) to the secondary and fixed to the de-cone (361); A body bolt 362 connected to the other end of the de-cone 361 to support the form support structure; A nut 363 fastened to the other end of the body bolt 362; And a washer 364 disposed under the nut 363. After the integral formwork structure is dismantled, the surface of the barrier wall 140 can be finished by filling mortars with the buried grooves formed by the de-cone 361 embedded in the barrier walls.

9, the primary fixture 350 includes a cantilever slab form 313 and a girder 313 to primarily fix the form support structure 320, as shown by reference numeral B in FIG. 7, (351) installed at a connecting portion of a side surface of the body (110); A bolt 352 fastened to the end of the vertical member 321 of the die support structure 320 with the a-shaped portion 351; And a nut 353 fastened to the bolt 352.

10, a position adjusting member 325 disposed on the horizontal member 322 may be further provided to adjust the position of the vertical wall member 324 in the horizontal member 322 according to the position of the barrier wall And a position fixing bolt 372 disposed on the position adjusting member 325 to adjust the position of the vertical wall member 324 for the barrier wall.

11 is a view showing a bridge including a cantilever slab of a bridge according to another embodiment of the present invention and an integrated die structure for constructing a barrier wall.

11, the cantilever slab of the bridge according to another embodiment of the present invention and the integral type mold structure 300b for constructing the barrier wall include a mold 310b, a mold supporting structure 320b, a work foot plate 330b, The cantilever slab and the formwork 310b for constructing the barrier wall are substantially the same as those of the cantilever slab and the barrier wall construction except that they are formed as a two- The description is omitted.

12 is a view showing a bridge including a cantilever slab of a bridge according to yet another embodiment of the present invention and an integrated die structure for constructing a barrier wall.

12, a cantilever slab of a bridge according to yet another embodiment of the present invention and a monolithic mold structure 300c for constructing a barrier wall may include a mold 310c, a mold support structure 320c, a work footrest 330c, And the directional horizontal stiffener 340c. The cantilever slab, the formwork 310b for constructing the barrier wall and the support structure for the formwork 320c are compared with the above-described FIG. 7, The structure is substantially the same except that the form support structure 320c is larger than that in the case where the traction main body is installed and the inclined material is additionally provided.

FIG. 13 is a view showing a formwork for constructing the inner slab between the girders in the bridge having the cantilever slab of the bridge according to the embodiment of the present invention and the integrated die structure for the barrier wall construction.

Referring to FIG. 13, in a bridge 100 in which a cantilever slab of a bridge according to an embodiment of the present invention and a monolithic die structure 300 for building a barrier are installed, a die structure 380 May include a pre-tie 381, a slab mold 382, a wood 383, a power steel 384 and a wedge pin 385, 110 and the girder 110. The slab 120 is formed by pouring the slab concrete.

As a result, the cantilever slab of the bridge according to the embodiment of the present invention and the one-piece mold structure 300 for the barrier wall construction are fixed to the two fixtures, the first fixture 350 and the second fixture 360, respectively.

For example, the secondary fastener 360 embedded in the barrier wall 140 is formed by a body bolt 362 and an L-shaped anchor bolt 365 as a dia-connut 361, and the cantilever slab 130, The bolts 140 of the primary clamp 350 located below the cantilever slab 130 in the work foot plate 330 are installed in the state where the secondary clamps embedded in the barrier walls are stably supported, 152 and the nut 153 are disassembled and dismantled in a primary manner and the main bolt 362 fastened to the D-connut 361 on the cantilever slab 130 is loosened and dismantled in a secondary manner.

Therefore, the mold 310 for the cantilever slab 130 of the bridge 100 and the barrier wall 140, the mold supporting structure 320 and the disengagement operation footrest 330 for the mold supporting structure are connected to the integral formwork 300 The integrally molded work structure 300 is lifted and secured while the mold 310 and the die support structure 320 are installed and the L-shaped anchor bolt 365 is installed on the barrier wall 140 to form a secondary fastener 360, minimizing the risk of disassembly of the form support structure 320.

[Bridge cantilever slab and barrier wall construction method using integral formwork structure]

14 is a flowchart illustrating an operation of a bridge cantilever slab and a method of constructing a barrier wall using the integrated formwork structure according to an embodiment of the present invention.

Referring to FIG. 14, a bridge cantilever slab and a barrier wall construction method using an integrated formwork structure according to an embodiment of the present invention includes a cantilever slab, a mold 310 for constructing a barrier wall, a rectangular mold support structure 320, And a plurality of rectangular form supporting structures joined by the longitudinal horizontal stiffener 343 and the operation pedestal 330 are integrally formed on the ground (S110).

Specifically, the integrated die structure includes: a die having a cantilever slab die and a barrier die integrally formed to form a cantilever slab and a barrier wall; a die support structure having a rectangular bracket structure for supporting the die; The form support structure includes a vertical member (321) having a rectangular bracket structure and including a primary fixture; A horizontal member 322 coupled to an upper end of the vertical member 321; A reinforcing horizontal member (341) coupled with a lower end of the vertical member (321); A reinforcing vertical member (342) connected to one side of the horizontal member and the reinforcing horizontal member as an outer vertical member of the rectangular bracket structure; An inclined member 323 slopingly disposed and coupled between the horizontal member 322 and the vertical member 321; And a vertical wall member 324 that is vertically coupled to the horizontal member to support the barrier form and in which a tie bolt through-hole of the secondary fixture is formed. A gap adjusting bolt 372 for adjusting the gap of the barrier wall form vertical member 324 and a gap adjusting bolt 371 for supporting the lower side of the vertical member at the lower side of the girder to adjust the distance between the form supporting structure 320 and the girder ) May be included. A die support block having a plurality of die support structures 320 arranged at regular intervals and bound by a longitudinal horizontal stiffener 343; And a work footrest for dismantling the primary fixture of the form support structure.

Next, the integral formwork structure 300 is weighed using both heavy equipment and then fixed to the girder with the primary fixture 350 under the cantilever slab 130, and an inner slab formwork is installed also on the inner side between the girders (S120).

The primary fixture 350 of the integral-type workpiece structure includes a cantilever slab die 313 for fixing the workpiece supporting structure 320 to the primary support 350, ); A bolt 352 for fastening the a section 351 to the end of the vertical member 321 of the form support structure 320; And a nut 353 fastened to the bolt 352.

Next, the assembled reinforcing bars for constructing the slab 130 of the bridge 100 are placed on the slab formwork, and then the bridge slab is constructed by using the on-site concrete (S130).

Next, the secondary fixture of the integrated workpiece structure 300 is installed (S140). Here, the secondary fixture 360 is a fixture embedded in the barrier wall 140, and includes a dia-con 361 contacting the inside of the wall of the barrier wall; An L-shaped anchor bolt (365) coupled to a reinforcing bar inside the barrier wall to fix the integral workpiece structure (300) to the secondary and fixed to the de-cone (361); A body bolt 362 connected to the other end of the de-cone 361 to support the form support structure; A nut 363 fastened to the other end of the body bolt 362; And a washer 364 disposed under the nut 363.

Next, the barrier 140 is installed by pouring concrete (S150).

Next, the integral formwork structure 300 is disassembled using the operation support footrest 330 for disassembling the form support structure 320 (S160). Specifically, when the form support structure 320 is dismantled, the form fastening structure 320 is stably supported by the second fastener 360, (350) is firstly dismantled and the secondary fixture (360) is dismantled on the cantilever slab.

Next, the surface of the barrier wall 140 is finely treated by filling mortars formed in the buried holes formed by the de-connuts previously embedded in the barrier 140 (S170).

15A and 15B are photographs illustrating the construction of a bridge cantilever slab and a barrier wall using the integral formwork structure according to the embodiment of the present invention, respectively.

15A and 15B, a cantilever slab of a bridge according to an embodiment of the present invention and an integrated die structure 300 for constructing a barrier wall have two fixtures, a first fixture 350 and a second fixture The secondary fixture 360 embedded in the barrier 140 is composed of a body bolt 362 and an L-shaped anchor bolt 365 as a de-connut 361, The cantilever slab 130 and the barrier wall 140 are successively installed so that the secondary fixture embedded in the barrier wall is stably supported and the primary cantilever slab 130, The bolts 152 and the nuts 153 of the fixture 350 are loosened and dismantled in a primary manner and the body bolts 362 fastened to the D-connuts 361 on the cantilever slabs 130 are loosened, .

As a result, according to the embodiment of the present invention, the cantilever slab, the barrier formwork, the rectangular support structure of the rectangular bracket structure, and the integrated worktop for dismantling the worktop support structure are integrally formed with the worktop support block, By forming the formwork structure, the workability, productivity, safety, and propriety can be improved.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Bridge 200: Railway track
300, 300a, 300b, 300c: integral formwork
110: girder 120: slab
130: Cantilever slab 140: Firewall
310: Cantilever slab and barrier formwork (integral type)
320: Form support structure
330: Work scaffold for demolishing formwork support structure
350: Primary fixture
360; Secondary fixture
311: Welding material for cantilever slab 312: Welding material for barrier wall
313: Cantilever slab form 314: Firewall form
321: first vertical member 322: horizontal member
323: Slope material 324: Second vertical material
325: Position adjusting member 341: Horizontal stiffener
342: Vertical stiffener 351: Steel section
352: Bolt 353: Nut
361: D-Cone nut 362: Body bolt
365: L type anchor bolt
363: Nut 364: Washer
371: Spacing adjusting bolt 372: Position fixing bolt
380: Slab formwork

Claims (10)

A dies (310) in which a cantilever slab and a cantilever slab former for constructing a barrier wall and a barrier form are integrally formed; And
And a die support structure (320) of a rectangular bracket structure for supporting the die, wherein the die support structure (320)
A vertical member 321 including a primary fixture in a rectangular bracket configuration;
A horizontal member 322 coupled to an upper end of the vertical member 321;
A reinforcing horizontal member (341) coupled with a lower end of the vertical member (321);
A reinforcing vertical member (342) connected to one side of the horizontal member and the reinforcing horizontal member as an outer vertical member of the rectangular bracket structure;
An inclined member 323 slopingly disposed and coupled between the horizontal member 322 and the vertical member 321; And
A vertical wall member 324 vertically bound to the horizontal member for supporting the barrier form and having a tie bolt through-hole of the secondary fixture,
The integral formwork structure 300 is fixed to the primary fixture 350 and the secondary fixture 360. The cantilever slab 130 and the barrier wall 140 are successively installed so that the secondary fixture The primary fixture 350 to be positioned below the cantilever slab 130 is firstly dismantled in the work foot plate 330 and the secondary fixture is separated from the cantilever slab 130 Wherein the integrated formwork structure is disassembled to thereby complete the cantilever slab of the bridge and the integral formwork structure for the barrier wall construction. The method according to claim 1,
A spacing adjusting bolt 372 and a die support structure 320 for adjusting the spacing of the vertical wall members 324; And
Further comprising a spacing adjustment bolt (371) for supporting the lower portion of the vertical member at the lower side of the girder side to adjust the spacing between the girders, and an integrally molded formwork for cantilever slab and barrier construction of the bridge. The method according to claim 1,
A die support block having a plurality of die support structures 320 arranged at regular intervals and bound by a longitudinal horizontal stiffener 343; And
A cantilever slab of a bridge further comprising a work footrest (330) for dismounting a primary fixture of a form support structure and an integral die formwork for barrier construction The apparatus of claim 1, wherein the primary fastener (350)
A cube 351 installed at the connection portion between the cantilever slab form 313 and the side surface of the girder 110 to primarily fix the form support structure 320;
A bolt 352 fastened to the end of the vertical member 321 of the die support structure 320 with the a-shaped portion 351; And
And a nut (353) fastened to the bolt (352). The integrated die structure for the construction of a cantilever slab and a barrier wall of a bridge. The apparatus of claim 1, wherein the secondary fastener (360)
A fixture embedded in the barrier wall (140), the di-con (361) contacting the inside of the wall of the barrier wall;
An L-shaped anchor bolt (365) coupled to a reinforcing bar inside the barrier wall to fix the integral workpiece structure (300) to the secondary and fixed to the de-cone (361);
A body bolt 362 connected to the other end of the de-cone 361 to support the form support structure;
A nut 363 fastened to the other end of the body bolt 362; And
And a washer (364) disposed under the nut (363). The integrated die structure for a cantilever slab and barrier construction of a bridge. delete The method according to claim 1,
Wherein the mortar is filled in the recessed groove formed by the de-cone (361) embedded in the barrier wall to finish the surface of the barrier wall (140) after the integral formwork structure is disassembled. The cantilever slab and the barrier Integrated die form for construction. a) fabricating a monolithic formwork integrated with a formwork support block and a formwork support structure for disassembling a formwork comprising a plurality of formwork support structures and a formwork support structure for cantilever slab and barrier wall construction;
b) lifting the integral formwork and securing it to the primary fixture under the cantilever slab;
c) arranging the assembly reinforcing bars for the slab construction of the bridge, and placing the concrete to construct the slab;
d) installing a secondary fixture of the integral formwork structure together with a reinforcing bar reinforcement; e) constructing a barrier wall by pouring the barrier wall concrete;
f) disassembling the first fixture using a work footrest for disassembling the form support structure, disassembling the second fixture of the fire wall, and disassembling the integrally formed mold structure; And
g) filling the mortar with holes formed by the decon nuts embedded in the fire wall to finish the surface of the fire wall,
The first fixing member is dismantled first and the second fixing member is dismantled in the space around the wall when the form supporting structure is dismantled and the mold supporting structure is stably supported by the second fixing member Bridge cantilever slab and barrier wall construction method using integral formwork structure. 9. The method of claim 8, wherein the integral formwork structure (300)
A dies (310) in which a cantilever slab and a cantilever slab former for constructing a barrier wall and a barrier form are integrally formed; And
And a die support structure (320) of a rectangular bracket structure for supporting the die, wherein the die support structure (320)
A vertical member 321 including a primary fixture in a rectangular bracket configuration;
A horizontal member 322 coupled to an upper end of the vertical member 321;
A reinforcing horizontal member (341) coupled with a lower end of the vertical member (321);
A reinforcing vertical member (342) connected to one side of the horizontal member and the reinforcing horizontal member as an outer vertical member of the rectangular bracket structure;
An inclined member 323 slopingly disposed and coupled between the horizontal member 322 and the vertical member 321; And
A method of constructing a bridge cantilever slab and a barrier using an integral formwork comprising a barrier material form vertical member (324) vertically bound to a horizontal member to support a barrier form and having a tie bolt through hole in the secondary fixture. The method of claim 9, wherein the primary fastener (350)
A cube 351 installed at the connection portion between the cantilever slab form 313 and the side surface of the girder 110 to primarily fix the form support structure 320; A bolt 352 fastened to the end of the vertical member 321 of the die support structure 320 with the a-shaped portion 351; And a nut 353 fastened to the bolt 352,
[10] The apparatus of claim 9, wherein the secondary fixture (360) is a fixture embedded in the barrier wall (140), the di-con (361) contacting the inside of the wall of the barrier wall; An L-shaped anchor bolt (365) coupled to a reinforcing bar inside the barrier wall to fix the integral workpiece structure (300) to the secondary and fixed to the de-cone (361); A body bolt 362 connected to the other end of the de-cone 361 to support the form support structure; A nut 363 fastened to the other end of the body bolt 362; And a washer (364) disposed under the nut (363). A method of constructing a bridge cantilever slab and a barrier wall using the integral formwork.

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