KR20100039080A - Movement type apparatus for constructing and detaching frame panel of a steel box bridge - Google Patents

Abstract

PURPOSE: A movable form installation and dismantlement apparatus for a steel box bridge is provided to facilitate the installation and dismantlement of the form panel, reduce construction time and construction costs, and increase working efficiency. CONSTITUTION: A movable form installation and dismantlement apparatus for a steel box bridge comprises a body frame(10), a wheel(20), a workbench(30), a first form dismantling tool, a second form dismantling tool(50), a first form unit(60), and a second form unit(70). The body frame comprises a parallel horizontal beam(11) and a downstream vertical beam. The wheel is installed on the lower end of the parallel horizontal beam of the body frame. The wheel travels on the central part of a bridge deck slab(7) placed on the top of a steel box(5). The workbench is connected to a horizontal support(15) of a body frame. The first form dismantling tool is installed inside the horizontal support of the body frame. The second form dismantling tool is installed outside the horizontal support of the body frame. The first form unit is coupled with the first form dismantling tool. The second form unit is coupled with the second form dismantling tool.

Description

MOVEMENT TYPE APPARATUS FOR CONSTRUCTING AND DETACHING FRAME PANEL OF A STEEL BOX BRIDGE}

The present invention relates to a formwork installation and dismantling device of the steel box bridge used to install and dismantle the formwork panel used when placing both sides of the bridge top plate of the steel box bridge to concrete.

In general, bridges are divided into slab bridges, girder bridges, truss bridges, arch bridges, ramen bridges, suspension bridges, and cable-stayed bridges according to their superstructures. Among them, girder bridges are further divided into T-shape, plate shape, steel box type, and the like. Shows a partial bottom perspective view of a typical steel box-type bridge.

In the case of the steel box-type bridge (3), as shown in Figure 1, after installing a bridge device (not shown) on the top of the concrete pier (4), the steel box (5) is placed on the top of the bridge device Next, the grating structure 6 is installed by the horizontal beam 6a and the vertical beam 6b so as to have a predetermined equal interval on the side of the steel box 5 to form the entire bridge structure.

In addition, in the placing of the bridge deck slab 7 of the steel box-type bridge 3, the center portion of the steel slab 7 may be directly placed on the steel box 5, but both sides thereof are formed in a grid-like space formed by the lattice structure 6. After installing the panels, the concrete should be poured and cured to pour the bridge deck slabs.

However, in order to install the formwork for placing both sides of the bridge slab (7), the scaffolding structure is piled up from the ground to almost the floor height of the bridge slab (7), and then the joists and yokes are laminated to each other, and the plywood material on top When the formwork panel is installed, and when the bridge deck slab is completed, it must be dismantled and the above-mentioned work must be repeated in the next section. Therefore, the work efficiency is reduced and the construction period and construction cost of the entire bridge are high. In particular, there is a problem that the dismantling work of the formwork panel is very complicated, and safety accidents are frequently caused by falling objects during the dismantling work.

It is an object of the present invention that the formwork panel can be easily installed without the need to install the scaffolding structure up to the floor height of the bridge slab when placing both sides of the bridge slab into concrete, greatly increasing the work efficiency and the overall construction period and It is to provide a mobile formwork installation and dismantling device of a steel box bridge so that construction costs can be significantly reduced.

Another object of the present invention is to provide a mobile formwork installation and dismantling device of the steel box bridge to be made easier to dismantle the formwork panel.

Objects of the present invention described above, the steel box bridge for installing and dismantling the formwork for placing both sides of the bridge deck slab on the lattice structure formed of horizontal beam and vertical beam on both sides of the steel box seated on the upper part of the bridge In the formwork installation and dismantling apparatus of the vertical horizontal beam is provided with horizontal support at both ends of the parallel horizontal beam extending across the bridge deck slab, the parallel horizontal beam and the down vertical beam are connected by connecting reinforcement, respectively The main frame is formed, a wheel installed at the lower end of the parallel horizontal beam of the main body frame and traveling on the center portion of the bridge deck slab mounted on the upper portion of the steel box, and the upper end of both sides connected to the horizontal support of the main frame Worktables installed in the longitudinal direction on both sides of the steel box, and installed inside the horizontal support of the main body frame The first formwork disassembling mechanism, the second formwork disassembling mechanism installed on the outside of the horizontal support of the main body frame, and the first formwork disassembly mechanism is coupled to the horizontal beam facing each other among the grid structure installed in the steel box The first formwork unit is installed over, and the second formwork unit is coupled to the second formwork disassembly mechanism and comprises a second formwork unit installed on the outside of the longitudinal beam of the grid structure installed in the steel box By providing a mobile formwork installation and dismantling device.

According to a preferred feature of the invention, the parallel horizontal beam of the main body frame is formed to be adjustable in length in accordance with the width of the bridge deck slab, respectively.

According to a preferred feature of the present invention, the downward vertical beam of the main body frame is hinged to both ends of the parallel horizontal beam of the main body frame, on the main body frame is provided with a winch mechanism for rotating the downward vertical beam relative to the parallel horizontal beam. The anti-rotation pins are coupled to both ends of the parallel horizontal beams to which the downward vertical beams are connected.

According to a preferred feature of the present invention, the first and second formwork disassembly mechanisms are formed of known rhombus jack mechanisms which are formed to be vertically movable by manipulating a screw rod.

According to a preferred feature of the invention, the first formwork unit, the first and second clamps are respectively fixed to the lower end of the horizontal beam facing each other among the grid structure installed in the steel box, respectively integrally on the upper portion of the clamp First and second vertical clubs which are formed to extend vertically and are adjustable in length, and are formed integrally on the upper side of the first and second vertical clubs and extend horizontally; And first and second auxiliary strip lines respectively installed on the first and second horizontal bars, first and second auxiliary formwork panels respectively installed on the first and second auxiliary strip lines, and the first and second auxiliary strip lines. A first fastening member for removably coupling a second auxiliary joist and said first and second auxiliary formwork panels to said first and second horizontal clubs, and installed over said first and second horizontal clubs A first joist coupled to the upper end of the formwork disassembly mechanism, a first formwork panel installed on the joist, and a second coupler that detachably couples the joist and the first formwork panel to the first and second horizontal clubs, respectively. It includes a fastening member.

According to a more preferred feature of the invention, the second formwork unit, after placing and curing the bridge slab slab, the length of the first and second vertical clubs stretch and the release of the first and second fastening members After dismantling the first and the second auxiliary main line and the first and second auxiliary formwork panel by, the first and the second vertical copper bar is moved to the long line and the first formwork panel, respectively, and then the first 1 The formwork disassembly mechanism is operated to disassemble the first formwork unit.

According to a preferred feature of the present invention, a clamp fixed to each of the outer lower end of the longitudinal beam of the grid structure installed in the steel box, vertically extending vertically to the upper portion of the clamp and is adjustable in length, the vertical A horizontal barrier coupled to an upper side of the barrier and formed with a groove for outward movement coupling of the vertical barrier, a joist installed on the horizontal barrier and coupled with an upper end of the second formwork disassembly mechanism, and installed on the joist It is made including a second formwork panel.

According to a more preferred feature of the present invention, after placing and curing the bridge deck slab, the length of the vertical club and the clamp is removed, the vertical club is coupled to the outside through the groove of the horizontal club Next, the second formwork unit is dismantled by operating the second formwork disassembly mechanism.

According to the mobile formwork installation and dismantling device of the steel box bridge according to the present invention, while the operator is riding on the workbench while traveling on the central portion of the bridge deck slab mounted on the upper part of the steel box step by step for each work section As the formwork is installed and dismantled after curing, it can be easily and easily placed on the concrete of both sides of the bridge slab slab, which greatly increases the work efficiency and significantly reduces the overall construction period and construction cost. There is an excellent effect that can be made more easily.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail, which will be described in detail so that those skilled in the art can easily carry out the present invention. This does not mean that the technical spirit and scope of the present invention are limited.

Figure 2 is a perspective view of a mobile formwork installation and dismantling device of the steel box bridge according to the present invention, Figure 3 is a cross-sectional view of the mobile formwork installation and dismantling device of the steel box bridge according to the invention, Figure 4 1 is a view illustrating the installation and disassembly of the formwork unit is shown, Figure 5 is a view illustrating the installation and disassembly of the second formwork unit, Figure 6a to 6d is a mobile formwork of a steel box bridge according to the present invention The operation diagram of the installation and dismantling device is shown. 2 and 6d, the length of the horizontal beam 6a relative to the vertical beam 6b is reduced in comparison with FIG. 1.

The mobile formwork installation and dismantling apparatus 1 of the steel box bridge according to the present invention is a grating formed of a horizontal beam (6a) and a vertical beam (6b) on both sides of the steel box (5) seated on top of the bridge (4) Bridge deck slab 7 as shown in FIGS. 2-6D, for installing and dismantling formwork for placing both sides of the bridge deck slab 7 on the structure 6 (see FIG. 1). Downward vertical beams 13 having horizontal supports 15 are connected to both ends of the parallel horizontal beams 11 extending across the parallel horizontal beams 11 and the downward vertical beams 13 respectively. On the central portion of the bridge frame slab (7) installed on the lower end of the main body frame 10 and the parallel horizontal beam 11 of the main body frame (10) and placed on top of the steel box (5) Both ends of the wheel 20 and the horizontal support 15 of the main body frame 10 is connected to the upper side of the steel box 5 On the worktable 30 which is installed in the direction, the first formwork disassembly mechanism 40 which is installed inside the horizontal support 15 of the main body frame 10, and the outside of the horizontal support 15 of the main body frame 10. The second formwork disassembly mechanism 50 and the first formwork disassembly mechanism 40, which is installed across the horizontal beam (6a) facing each other among the grid structure (6) installed in the steel box (5) A second formwork unit 70 coupled to the formwork unit 60 and the second formwork disassembly mechanism 50 and installed outside the longitudinal beam 6b of the grid structure 6 installed in the steel box 5. It is made, including.

Here, the body frame 10 forms the frame of the mobile formwork installation and dismantling apparatus 1 of the steel box bridge according to the present invention, the parallel horizontal beam of 11 extending across the bridge deck slab (7) Downward vertical beams 13 having horizontal supports 15 are connected at both ends, and parallel horizontal beams 11 and downward vertical beams 13 are connected to each other by connecting reinforcing bars 17.

The parallel horizontal beams 11 of the main body frame 10 extend in parallel to each other at a distance corresponding to the work interval, and the parallel horizontal beams 11 are connected to each other by a screw rod 11a at the center thereof. The length of the bridge deck slab 7 is preferably formed to be adjustable in length. Therefore, the length of the parallel horizontal beam 11 can be adjusted longer than the total width of the bridge deck slab 7 as the length is stretched in accordance with the rotation direction of the screw rod (11a).

The horizontal support 15 provided in the downright vertical beam 13 enables the coupling of the work bench 30 to be described later, and at the same time enables the installation of the first and second formwork disassembly mechanisms 40 and 50 to be described later. In this way, it is bent vertically to the lower side of the vertical beams 13 extends toward the steel box (5).

The connecting reinforcement 17 is connected to the parallel horizontal beams 11 spaced apart from each other and at the same time by connecting the vertical beams 13 spaced apart from each other on both sides to integrate the body frame 10, reinforcement is possible It is preferably formed of a metal steel material.

In addition, the downward vertical beam 13 of the main body frame 10 may be integrally fixed to both ends of the parallel horizontal beam 11 of the main body frame 10, depending on the embodiment, the horizontal horizontal beam of the main body frame 10 It can also be pivotally hinged to both ends of the (11), in this case winch mechanism for rotating the downward vertical beam 13 relative to the parallel horizontal beam 11 on the main body frame 10, as shown in Figure 6d It is preferable that 19 is provided.

The winch mechanism 19 includes a drive motor 19a installed on the parallel horizontal beams 11, a winding bobbin 19b installed on the parallel horizontal beams 11 and rotationally driven by the drive motor 19a; A pulley 19c provided on the downward vertical beam 13 and a wire 19d, one end of which is wound around the gusset bobbin 19b and the other end of which is fixed to the end side of the downward vertical beam 13 via the pulley 19c. It may be made, including.

In addition, when the downward vertical beam 13 of the main body frame 10 is connected to the parallel horizontal beam 11 to be rotatable by the winch mechanism 19, the connection of the parallel horizontal beam 11 and the downward vertical beam 13 The site is preferably coupled to the anti-rotation pin 18 to prevent the random rotation of the downward vertical beam (13) during operation.

The wheel 20 is installed at the lower end of the parallel horizontal beam 11 of the body frame 10 described above, and the wheel 20 is located on the center of the bridge deck slab 7 which is placed on the upper portion of the steel box 5. By moving the, it is possible to move the movable formwork and dismantling device 1 of the steel box bridge according to the present invention, it is preferably formed of ordinary metal wheels, according to an embodiment the steel box (5) It is preferable to roll along the guide rail (not shown) installed on the center portion of the bridge deck slab 7 which is placed on the upper portion of the slab.

It is preferable that the upper end of both sides of the work bench 30 is connected to the lower portion of the horizontal support 15 of the main body frame 10, the work platform 30 is a first and second formwork unit to be described later by the operator To enable the work for the installation and disassembly (60 and 70), it is preferable to be formed in the shape of the enclosure of the safety railings, the steel box (5) to enable the work on both sides of the steel box (5) 1) are installed on each side of each side in the length direction.

The first formwork disassembling mechanism 40 is installed inside the horizontal support 15 of the main body frame 10, and the first formwork disassembling mechanism 40 has a first formwork unit 60 whose upper end will be described later. And coupled to the lower end is coupled to the horizontal support (15), during the concrete casting and curing of both sides of the bridge deck slab (7) the length thereof is extended to serve to support the first formwork unit (60) However, when the casting of both sides of the bridge deck slab 7 of a certain working period is completed by the operation of the operator to serve to pull the first formwork unit 60 to the bottom to separate, the operation of the screw rod It is preferable to be formed of a known rhombus jack mechanism that is formed to be vertically movable by.

The second formwork disassembly mechanism 50 is installed on the outer side of the horizontal support 15 of the body frame 10 described above, the second formwork disassembly mechanism 50 is the upper end of the second formwork unit 70 will be described later. And coupled to the lower end is coupled to the horizontal support 15, during the concrete casting and curing of both sides of the bridge deck slab 7 its length is extended to support the second formwork unit (70) However, when the casting of both sides of the bridge deck slab 7 of the predetermined working period is completed by the operator's operation to expand the second formwork unit 70 by pulling down to remove the first formwork. Like the dismantling mechanism 40, it is preferable that it is formed of the well-known rhombus jack mechanism formed so that a vertical movement is possible by the operation of a screw rod.

The first formwork unit 60 is coupled to an upper end of the above-mentioned first formwork disassembly mechanism 40, and the first formwork unit 60 faces each other among the grid structures 6 installed in the steel box 5. Supporting the bridge slab 7 to be installed over the horizontal beam (6a) to be placed thereon, as shown in Figure 4, facing each other of the grid structure (6) installed in the steel box (5) The first and second clamps 61a and 61b fixed to the lower ends of the horizontal beam 6a and the upper portions of the first and second clamps 61a and 61b are integrally formed to extend vertically and are adjustable in length. First and second vertical clubs 62a and 62b formed so as to be formed on the upper side of the first and second vertical clubs 62a and 62b, respectively. 63b), first and second auxiliary main lines 64a and 64b provided on the first and second horizontal clubs 63a and 63b, respectively, and the first and second First and second auxiliary formwork panels 65a; 65b and first and second auxiliary formwork lines 64a; 64b and first and second auxiliary formwork panels 65a respectively provided on the jangjoe lines 64a and 64b. A first fastening member (66a; 66b) detachably coupling the first and second horizontal clubs (63a; 63b) to the first and second horizontal clubs (63a; 63b); The first formwork 67 to which the upper end of the formwork disassembly mechanism 40 is coupled, the first formwork panel 68 installed on the joist 67, and the first formwork 67 and the first formwork panel 68 are firstly formed. And a second fastening member 69 detachably coupled to the second horizontal clubs 63a and 63b, respectively.

The first formwork unit 60 is a formwork for supporting concrete for placing concrete on both sides of the bridge slab 7. The first formwork unit 60 is formed by dividing the first formwork panel 68 and the auxiliary formwork panels 65a; There is a characteristic. Therefore, after placing and curing both sides of the bridge deck slab 7 of the work section, as shown in FIG. 4, the first and second auxiliary joists 64a and 64b and the first and second auxiliary formwork panels ( As the length of the first formwork unit 60 is reduced between the horizontal beams 6a which face each other as the first form 65a; 65b is removed, dismantling by manipulating the first formwork disassembly mechanism 40 is performed. It can be done easily.

Referring to this in more detail with reference to Figure 4, in the case of being cast and cured to both sides of the bridge deck slab 7 through the mobile formwork installation and dismantling device 1 of the steel box bridge according to the present invention, First, the lengths of the first and second vertical clubs 62a and 62b on the work table 30 are expanded and released, and the first fastening members 66a and 66b and the second fastening member 69 are released, for example, for dismantling. After disassembling the 1st and 2nd auxiliary main lines 64a and 64b and the 1st and 2nd auxiliary formwork panels 65a and 65b using a jack mechanism, the 1st and 2nd vertical copper legs 62a and 62b were respectively removed. After moving to the joist 67 and the first formwork panel 68, the first formwork unit 60 may be dismantled as the first formwork dismantling mechanism 40 is pulled downward.

A second formwork unit 70 is coupled to the second formwork disassembly mechanism 50, and the second formwork unit 70 is the outer side of the longitudinal beam 6b of the grid structure 6 installed in the steel box 5. To support the bridge deck slab (7) to be installed on the upper portion, as shown in Figure 5, the outer bottom of the longitudinal beam (6b) of the lattice structure (6) installed in the steel box (5) Clamps 71 fixed to each, a vertical grouping 72 extending vertically to the upper portion of the clamp 71 and formed to be adjustable in length, coupled to the upper side of the vertical grouping 72, the outer side of the vertical grouping 72 Horizontal clubs 73 formed with grooves 73a for movable coupling, joists 74 installed on the horizontal clubs 73, and upper ends of the second formwork disassembly mechanisms 50, and joists 74 It comprises a second formwork panel 75 is installed on the top, according to the embodiment, both ends of the clamp 71 and the horizontal clubs 73 It is configured to enable connection of each pivot is adjustable possibly further comprising a tilt support (76) is formed is preferable.

Therefore, after placing and curing both sides of the bridge slab 7 of the work section, as shown in FIG. 5, the length of the vertical club 72 is stretched and the clamp 71 is moved outside the vertical beam 6b. After removing from the lower end, the vertical circle 72 is moved outward through the groove 73a of the horizontal circle 73, and then the second formwork unit 70 is operated by the operation of the second form disassembly mechanism 50. It can be disassembled by pulling it downward.

Hereinafter, the overall operation of the mobile formwork installation and dismantling device 1 of the steel box bridge according to the present invention with reference to Figure 6a to 6d as follows:

First, the central part of the bridge deck slab 7 is poured into the upper part of the steel box 5 in the construction section, and then the mobile formwork installation and dismantling device 1 of the steel box bridge according to the present invention is positioned by using the crane on the upper part. Let's do it. In this case, the winch mechanism 19 is operated to install the downwardly vertical beam 13 in a state of upwardly rotating as shown in FIG. 6D, and then the winch mechanism 19 is operated in reverse to the downwardly vertical beam 13. ) And then rotated downward again to fix the state by combining the anti-rotation pin (18).

In this state, the worker rides on the work bench 30 by using a moving ladder or a high-altitude vehicle, and the first and the grid structure 6 including the horizontal beams 6a and the vertical beams 6b on both sides of the steel box 5. The second formwork units 60 and 70 are installed.

When the concrete is poured on both sides of the bridge deck slab 7 and the curing is completed, the operator operates the first and second formwork disassembling mechanisms 40 and 50 on the worktable 30 again to form the first and second formwork units 60. And 70), the movable formwork and dismantling apparatus 1 of the steel box bridge according to the present invention may be moved to the next construction section through the driving of the wheel 20, and then the above operation may be repeated.

When the whole construction is completed, by operating the winch mechanism 19, as shown in Figure 6d, the movable formwork of the steel box bridge according to the present invention using a crane with the downward vertical beam 13 is rotated upwards And the dismantling device 1 may be separated.

Therefore, when using the mobile formwork installation and dismantling device (1) of the steel box bridge according to the present invention, the bridge deck slab (7) placed in the upper portion of the steel box (5) in the state that the operator boarded on the work table (30) It is possible to simply pour the concrete on both sides of the bridge slab (7), while repeatedly installing the formwork on both sides and dismantling after disassembly while driving the central part of each step by step. It can be increased and the overall construction period and construction cost can be significantly reduced, and the dismantling work of the formwork can be made more easily.

1 is a partial bottom perspective view of a typical steel box bridge.

Figure 2 is a perspective view of a mobile formwork installation and dismantling device of the steel box bridge according to the present invention.

Figure 3 is a cross-sectional view of the mobile formwork installation and dismantling apparatus of the steel box bridge according to the present invention.

4 is a view for explaining the installation and disassembly of the first formwork unit in the mobile formwork installation and dismantling apparatus of the steel box bridge according to the present invention.

5 is a view for explaining the installation and disassembly of the second formwork unit in the mobile formwork installation and dismantling apparatus of the steel box bridge according to the present invention.

6a to 6d is an operation of the mobile formwork installation and dismantling device of the steel box bridge according to the present invention.

Explanation of symbols on the main parts of the drawings

1: mobile formwork installation and dismantling device of the steel box bridge according to the present invention

3: Steel box type bridge

4: pier

5: Steel Box

6: lattice structure

6a: horizontal beam

6b: vertical beam

7: bridge deck slab

10: main frame

11: parallel horizontal beam

13: downward vertical beam

15: horizontal support

17: connecting reinforcement

19: winch mechanism

20: wheel

30: work table

40: first formwork dismantling mechanism

50: second formwork dismantling mechanism

60: first formwork unit

70: second formwork unit

Claims (8)

In the formwork and dismantling device of the steel box bridge for installing and dismantling the formwork for placing both sides of the bridge slab slab on the lattice structure formed of horizontal beam and vertical beam on both sides of the steel box seated on the upper part of the bridge , A body frame having horizontal support beams connected to both ends of the parallel horizontal beams extending across the bridge deck slab, wherein the parallel horizontal beams and the vertical beams are connected to each other by connecting reinforcing bars; A wheel installed at a lower end of the parallel horizontal beam of the main body frame and traveling on a central portion of the bridge slab mounted on the steel box; Workbenches installed on both sides of the steel box in the longitudinal direction is connected to the upper end of the horizontal support of the main body frame; A first formwork disassembly mechanism installed inside the horizontal support of the main body frame; A second formwork disassembling mechanism installed outside the horizontal support of the main body frame; A first formwork unit coupled to the first formwork disassembling mechanism and installed over horizontal beams facing each other among the grid structures installed in the steel box; And And a second formwork unit coupled to the second formwork disassembling mechanism and installed on an outer side of the longitudinal beam among the grid structures installed in the steel box. 2. The method according to claim 1, The horizontal horizontal beam of the main body frame, the movable formwork installation and dismantling device of the steel box bridge, characterized in that the length is formed to be adjustable in accordance with the width of the bridge top slab. The method according to claim 1, The downward vertical beam of the main body frame is hinged to both ends of the parallel horizontal beam of the main body frame, a winch mechanism for rotating the downward vertical beam relative to the parallel horizontal beam is provided on the main body frame, parallel to which the downward vertical beam is connected Mobile formwork installation and dismantling device of the steel box bridge, characterized in that the anti-rotation pin is coupled to both ends of the horizontal beam to prevent the random rotation of the downward vertical beam. The method according to claim 1, The first and second formwork disassembly mechanism is a movable formwork installation and dismantling device of the steel box bridge, characterized in that formed by a known rhombus jack mechanism that is formed to be movable vertically by the operation of the screw rod. The method according to claim 1, The first formwork unit includes first and second clamps fixed to lower ends of horizontal beams facing each other among grid structures installed in the steel box, and are integrally formed on the upper portions of the clamps and vertically extended. First and second vertical clubs which are formed to be adjustable, first and second horizontal clubs which are formed integrally on the upper sides of the first and second vertical clubs, respectively, and extend horizontally, and the first and second horizontal bars First and second auxiliary joists, respectively installed on the copper bar, first and second auxiliary formwork panels respectively installed on the first and second auxiliary joists, the first and second auxiliary joists and the first And a first fastening member for detachably coupling a second auxiliary formwork panel to the first and second horizontal clubs, and installed over the first and second horizontal clubs, and having an upper end of the first formwork disassembly mechanism coupled thereto. A joist, a first formwork panel installed on the joist, and a second fastening member for detachably coupling the joist and the first formwork panel to the first and second horizontal clubs, respectively. Mobile formwork installation and dismantling device of steel box bridge. The method according to claim 5 After placing and curing the bridge deck slab, the first and second auxiliary joists and the first and second auxiliary lines are extended by stretching the lengths of the first and second vertical clubs and releasing the first and second fastening members. After dismantling the auxiliary formwork panel, the first and the second vertical movement are coupled to the joist and the first formwork panel, respectively, and then the first formwork unit is dismantled by operating the first formwork disassembly mechanism. Mobile formwork installation and dismantling device of the steel box bridge, characterized in that. The method according to claim 1, wherein the second formwork unit, Clamps fixed to the outer lower end of the vertical beam of the grating structure installed in the steel box, a vertical swivel extending vertically on the upper portion of the clamp and adjustable in length, coupled to the upper side of the vertical swivel and the vertical It comprises a horizontal copper bar which is formed with a groove for the outer movable coupling of the copper bar, the joist is installed on the horizontal bar and the upper end of the second formwork disassembly mechanism is coupled, and the second formwork panel installed on the joist Mobile formwork installation and dismantling device of the steel box bridge, characterized in that. The method of claim 7, After placing and curing the bridge slab, the length of the vertical club is stretched and the clamp is removed, and the vertical club is moved outward through the groove of the horizontal club, and then the second formwork disassembly mechanism Mobile formwork installation and dismantling device of the steel box bridge, characterized in that for dismantling the second formwork unit through the operation.

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