KR100730234B1 - System for changing the upper structure of a bridge by transversly driving - Google Patents

Abstract

An emergency replacement system for an upper structure of a bridge by horizontal propulsion is provided to replace the deteriorated existing upper structure with a new upper structure quickly and safely. Disclosed is the emergency replacement system for an upper structure of a bridge by horizontal propulsion, which is used for removing the deteriorated existing upper structure(A) and installing a new upper structure(B) by propelling the whole upper structure equivalent to one span of a bridge in the horizontal direction and composed of a temporary pier(10), a horizontal propulsion device and many overturn prevention bracings. The temporary pier is located on the inside of a lower structure(C) which supports the existing upper structure as a steel structure and projected to the outside space of the existing upper structure as much as the width of a bridge to be installed three times as long as the width of a bridge. The horizontal propulsion device is installed on the temporary pier in the width direction of a bridge to lift up the existing upper structure and to space out from the lower structure, and then to install the new upper structure, and composed of a pair of horizontal propulsion rails installed parallel in the width direction of a bridge on the temporary pier and provided with stair-type reaction walls formed on one side under the new upper structure repeatedly and a slide guide plate formed on the center, a movable rail provided with a slide plate contacted with the slide guide plate to guide a sliding movement, placed on the horizontal propulsion rail and installed in the corresponding length to the width of the existing and new upper structures, a flat jack installed among the movable rail and the existing and new upper structures to ascend and descend the existing and new upper structures to the required height, and a hydraulic propulsion body coupled to a PC beam installed to the outermost edge of the new upper structure and pushing the existing and new upper structures in the horizontal direction from the stair-type reaction walls of the horizontal propulsion rail. The overturn prevention bracing is installed to prevent a bridge from being overturned by starting load and braking load caused while propelling in the horizontal direction and composed of horizontal bracings installed on the upper and lower parts of the PC beams and vertical bracings connecting and reinforcing the horizontal bracings.

Description

System for changing the upper structure of a bridge by transversly driving}

Figure 1a and Figure 1b is a plan view showing the superstructure of the bridge superstructure through the transverse propulsion according to the present invention, Figure 1a shows the state before the propulsion Figure 1b shows the state after the propulsion

Figure 2 is a side view showing the bridge superstructure emergency replacement system through the transverse propulsion in accordance with the present invention

Figures 3a and 3b is an extract showing a transverse propulsion device applied to the system of the present invention

Figure 4 is a view showing an extract of the fall prevention bracing applied to the system of the present invention;

<Description of Symbols for Main Parts of Drawings>

10: temporary pier 20: transverse propulsion device 21: propulsion rail

21a: stairway reaction wall 21b: sliding guide plate 22: movable rail

22a: sliding plate 23: flat jack 23a: end tap

23b: spherical support 24: hydraulic propellant 24a: hydraulic jack

24b: clasp 24c: clasp 25: guide rail

30: Brace 31: Crossover team 31a: Screw rod

31b: Screw 32: Vertical Team 33: Locking Nuts

40: Saddle A: Existing superstructure B: New superstructure

C: Substructure P: PC Beam

The present invention relates to the re-establishment after removing the superstructure of the aging bridge, and more specifically, it is difficult to secure the bypass road due to the site conditions or the need for minimizing the traffic blocking time as the bridge is concentrated traffic In this case, especially when it is difficult to secure alternative bridges during re-establishment period, such as railway bridges, the transverse superstructure can safely replace the superstructure of the aging bridge with the new superstructure in a short time of 3 to 5 hours without disrupting the traffic. It is about emergency supervisory system of bridge superstructure through direction promotion

In general, to remove the superstructure of the aging bridge (except for parts of the structure supported by shifts or substructures of bridges, eg slabs, beams, etc.) and to construct new superstructures, it is necessary to install bridges to secure them. By bypassing vehicles on temporary roads, the existing superstructures are demolished, and the new superstructures are rebuilt over existing substructures.

However, when installing a new superstructure after installing a bridge to secure a temporary bypass road and dismantling the superstructure of an aging bridge as described above, various problems occur as follows.

In other words, the construction period takes at least several months, which causes enormous obstacles to traffic flow during the long construction period, which causes great troubles in traffic communication. The environment not only increases the risk of accidents at night vehicles but also causes many problems for the safety of pedestrians.

In addition, it is not only expensive to install and dismantle the bridges used temporarily during the construction period, but also especially when the replacement bridges are located in the middle of the busy city or when the construction of the temporary bypass line such as a railway bridge is expensive. There are many problems, including the economic and social burden of removing existing superstructures and rebuilding new ones.

As described above, when the superstructure of an aging bridge is demolished and a new superstructure is newly replaced, a detour temporary road is usually constructed and constructed so that a vehicle may be controlled or a traffic jam may occur until the entire construction period has elapsed. There is no choice but to be.

Moreover, in case of construction work in the downtown area, serious traffic jams are caused and the economic loss is severe. In particular, in the case of railway bridges, it is almost impossible to replace only specific bridges because it is impossible to secure a bypass line.

Therefore, there is an urgent need to develop an alternative technology that can solve the above problems and replace and construct the superstructure of the aging bridge economically, safely and quickly with the new superstructure.

The present invention is difficult to secure the detour road in the field conditions in the demolition and re-installation of the superstructure of the aging bridge, or the traffic concentration is concentrated when there is a need to minimize the time of traffic blocking, especially during the re-establishment period, such as railway bridge The present invention has been made to solve the problems of the prior art in the case where it is difficult to secure alternative bridges, and an object of the present invention is to construct a new superstructure identical to the superstructure of an existing bridge corresponding to one span of the bridge next to the existing bridge. After a short time of 3 ~ 5 hours at night, the superstructure of the bridge is urgently replaced by pushing the existing superstructure at the temporary bridge and moving the new superstructure over the pier or shift to replace it. To provide a system.

Bridge superstructure emergency replacement system through the transverse propulsion of the present invention for achieving the above object, simultaneously pushing the entire superstructure corresponding to one span of the bridge in the transverse direction to demolish the old superstructure and newly established superstructure In the bridge superstructure replacement system for installation, located inside the lower structure (shift / pier) of the two sides supporting the existing superstructure, each protrudes by the length of the bridge to the outer space of both sides of the existing superstructure by the bridge width along the bridge direction A temporary bridge installed at a length of about 3 times the length of the bridge bridge, and a transverse propulsion device installed in the bridge width direction on the temporary bridge bridge to lift the existing superstructure away from the substructure and allow the new superstructure to be constructed thereon; Fixed and installed between PC beams of the existing and new superstructures. The structure consists of a plurality of bracing by connecting the vertical longitudinal braces and the vertical longitudinal braces that can be adjusted to stretch and prevent the upper structure from being conducted by the starting load and the braking load while allowing the entire structure to move in a batch. Place the new superstructure on one side of the transverse propulsion device by placing it side by side with the existing superstructure, fix and install the bracings between the PC beams, and then use the transverse propulsion device to At the same time, the existing superstructure is moved to the other side of the propulsion device to be demolished, and the new superstructure is moved to the substructure of the bridge to be re-established.

In another aspect, the present invention, the transverse propulsion device is installed in parallel in the crosswise direction on the temporary bridge piers, the step-like reaction wall is repeated and formed on one side located below the new superstructure, the sliding guide plate is provided at the center A pair of transverse propulsion rails and a sliding plate for inducing sliding movement while contacting the sliding guide plate are provided at a lower portion of the center, and are disposed on the transverse propulsion rail and have a length corresponding to the bridge width of the existing and new upper substructures. A movable rail, which is installed between the movable rail and the PC beams of the existing and new superstructures, and a flat jack for elevating the existing and new superstructures to a required height, and at the outermost edge of the new superstructure. It is attached to the installed PC beam and supports the existing and new superstructures with supporting points on the reaction walls of the transverse propulsion rail. It provides a technique which is characterized by consisting of a hydraulic pressure of the propellant moves in a direction to push.

In another aspect, the present invention, the bracing is composed of horizontal braces that are installed parallel to the top and bottom of the PC beams, and the middle braces to reinforce by connecting between the upper and lower horizontal braces, the horizontal braces and The longitudinal braces provide a technical configuration characterized in that they are fixed by a fixing nut while being stretched and adjusted by the combination of the screw rod and the screw tube.

The present invention of the above characteristics is to install a temporary bridge that is about three times the length of the bridge in the bridge direction (orthogonal direction of the bridge) next to the bridge or bridge of the existing bridge to remove the aging superstructure, the transverse propulsion on the temporary bridge After installing the transverse propulsion system with the rail and the propellant, and constructing the new superstructure identical to the existing superstructure corresponding to one span of the bridge on the transverse propulsion rail, the bridge system, the electric conduit, the water pipe, the railway rail and the After installing all the facilities such as street lamps in the new superstructure, the existing superstructure and the new superstructure of the bridge are simultaneously promoted in the horizontal direction in the short time of 3 ~ 5 hours by using the transverse propellant at night with no traffic. The old superstructure can be replaced quickly and safely with the new superstructure.

Therefore, according to the present invention, the control time of the vehicle is extremely short, which hardly affects the communication of the vehicle, and it is not necessary to install a bridge to secure the bypass of the vehicle, thereby reducing the construction cost, There is no fear of vehicle accidents due to the curve, which can ensure various safety effects.

Hereinafter, the technical configuration of the present invention will be described in more detail with reference to the accompanying drawings of FIGS. 1A to 4 according to the present invention.

Bridge superstructure emergency replacement system through the transverse propulsion according to the present invention, by simultaneously pushing the entire superstructure corresponding to one span of the bridge in the transverse direction to demolish the old superstructure (A) and newly established superstructure (B) It is to be used to install, largely divided into the construction of the temporary piers 10, transverse propulsion device 20 and a number of bracing 30 as the main components, side by side with the existing superstructure (A) the new After constructing the upper structure (B) on one side of the transverse propulsion device 20, the bracing 30 is fixed and installed between the PC beams (P), and then to the transverse propulsion device (20) The existing and the new superstructure (A) (B) is promoted at the same time by moving the existing superstructure (A) over the other side of the transverse propulsion device 20 to demolish and the new superstructure (B) of the bridge Configured to relocate by moving over infrastructure (C) All.

The temporary pier 10 is a steel structure, as shown in Figures 1a, 1b and 2, and is located inside the lower structure (shift / pier) (C) of both sides supporting the existing upper structure (A) It protrudes into the outer space on both sides of the upper structure (A) by the length of the bridge, and is installed with a length that is about three times the width of the bridge along the bridge direction.

2 to 3b show a transverse propulsion device 20 including a flat jack 23 which is a bridge elevating device.

The transverse propulsion device 20 is an important component of the present invention, is installed along the bridge width direction on the temporary bridge 10 and lifts the existing upper structure (A) to separate from the lower structure (C) and the new It serves to allow the superstructure B to be constructed thereon.

The transverse propulsion device 20 is provided in parallel in the crosswise direction on the temporary piers 10, and the stepped reaction wall 21a is repeatedly formed and formed at one side of the new superstructure B. And a pair of lateral propulsion rails 21 provided with a sliding guide plate 21b at the top of the center, and a sliding plate 22a for inducing sliding movement while being in contact with the sliding guide plate 21b. The movable rail 22 and the movable rail 22 and the existing and new, which are disposed on the transverse propulsion rail 21 and installed to have a length corresponding to the bridge width of the existing and new superstructures (A) and (B). A flat jack (23) installed between the PC beams (P) of the upper structure (A) and (B) to raise and lower the existing and new upper structures (A) and (B) to the required height, and the new upper structure (B). Stepped half of the transverse propulsion rail 21 is bound to the PC beam (P) installed on the outermost edge at Is constructed with a supporting point on the wall (21a) to the hydraulic propellant 24 to push moving the existing and new superstructure (A) (B) in the cross direction.

The sliding guide plate 21b is continuously formed over the entire length of the propulsion rail 21.

The sliding plate 22a is made of a plurality of units, and each unit is intermittently installed on each vertical line where the PC beams P of the existing and new superstructures A and B are located.

The present invention is the movable rail 22 is installed on the transverse propulsion rail 21 as described above and the flat jack 23 is installed on the movable rail 22, the transverse propulsion rail 21 and the movable rail 22 and The sliding guide plate 21b and the sliding plate 22a which are provided in order to reduce frictional resistance at the time of a lateral propulsion between are provided. The sliding guide plate 21b and the sliding plate 22a are designed such that the frictional force is about 3 to 6% of the vertical load of the bridge superstructure while ensuring a sufficient area to sufficiently support the load of the bridge.

In addition, the guide rail 25 is installed between the transverse propulsion rail 21 and the movable rail 22 to prevent the bridge from sliding in the axial direction during the transverse propulsion.

The flat jack 23 is fixed by the end tab 23a to prevent the PC beam P from slipping on the flat jack 23 during the lateral propulsion, and is twisted during the production of the PC beam P. Or if the lower surface of the twisted PC beam (P) during the hypothesis is not horizontal, the spherical base 23b (Sperical Dish) that can correct this is installed.

The hydraulic propulsion body 24 is hinged to the hydraulic jack 24a, the front end of which is bound to the newly established upper structure, and the rear end of the hydraulic jack 24a to be able to rotate up and down when the propulsion by the stroke of the hydraulic jack 24a While being mounted on the stepped reaction wall 21a, a support point is formed on the stepped reaction wall 21a, and when the stroke of the hydraulic jack 24a is restored, it moves freely and moves freely to the front stepped reaction wall 21a. Up and down rotation is hinged to the clasp 24b and the clasp 24b, and the hook formed at the rear end is caught by the protrusion of the stepped reaction wall 21a so that the existing and new superstructures A and B ) Is composed of an anti-slip latch (24c) that controls the movement of arbitrary).

The transverse propulsion device 20 configured as described above has the stepped reaction force formed at both ends of the transverse propulsion rail 21 when the hydraulic jack 24a of the hydraulic propulsion body 24 that applies the transverse thrust force pushes the stroke. The hydraulic jack 24a is extended with the support point 24b on the wall 21a, and the pusher 24b moves in the transverse direction while pushing the stepped reaction walls provided on both sides of the transverse propulsion rail 21. Propulsion of the rail 22 to move the existing and new superstructure (A) (B) installed on it in the transverse direction.

In addition, the existing and the new upper structure (A) (B) slips in the direction perpendicular to the throttle due to the minute inclination of the transverse propulsion rail 21 or the slight inclination due to the floating settlement of the temporary bridge 10 during the transverse propulsion. In order to prevent the clasp 24b from being mounted on the stepped reaction wall 21a, it is possible to prevent the non-slip clasp 24c from sliding the bridge over the stepped rail.

In addition, when the stroke of the hydraulic jack 24a is completed, when the anti-slip latch 24c is lowered and the stroke of the hydraulic jack 24a is restored, the clasp 24b automatically moves to the front stepped reaction wall 21a. When it is moved upward and pushes the stroke of the hydraulic jack 24a which exerts a transverse thrust force again, it pushes the movable rail 22 and pushes it.

Therefore, according to the transverse propulsion device 20 of the present invention as described above, the operation of the clasp 24b automatically moves only by the stroke reciprocating motion of the hydraulic jack 24a, so that the existing and new superstructures A and B of the bridge are operated. ) Can be easily pushed out in the lateral direction to the required position.

On the other hand, in the case of a bridge type which is not a slab bridge or a steel box type bridge, there is a high possibility that it will fall when a lateral force is applied.

2 and 4 show an anti-conduction bracing 30 installed to prevent the bridge from falling over by starting and braking loads that may occur during propulsion of the superstructure of the bridge in the lateral direction.

The bracing 30 is fixed and installed for each element between the PC beams (P) of the existing and new superstructures (A) and (B), the entire existing and new superstructures (A) and (B) during propulsion. While moving in a batch, it serves to prevent the superstructure from being conducted by the starting and braking loads.

This bracing 30 is a longitudinal longitudinal strut 32 that connects and reinforces between the horizontal struts 31 installed parallel to the upper and lower portions of the PC beams P, and the upper and lower horizontal struts 31. It consists of

The horizontal braces 31 and the vertical braces 32 are made of a structure that is fixed by the fixing nut 33 while being stretched and adjusted by the combination of the screw rod (31a) and the screw pipe (31b).

Here, the saddle 40 to protect while supporting the concrete body is installed in the lower portion of the PC beam (P), both end portions of the lateral brace 31 located on the lower side and the lower end of the longitudinal brace 32 is It is hinged to the saddle 40.

The bracing 30 configured as described above is to prevent the upper structure of the bridge caused by the starting load and the braking load, which may occur while pushing the bridge in the lateral direction, and all that can be tightened with the fixing nut 33 like a screw. Since the threaded rod 31a of the thread type is installed in the screw tube 31b, the fixing nut 33 is tightened or loosened like the screw jack so that the PC beams P can be adjusted as the size or mold spacing changes. It is recyclable and easy to install and dismantle.

According to the present invention, the PC beam P is fixed by the saddle 40 and the fall prevention bracing 30 through the above configuration, and the saddle 40 is mounted on the flat jack 23 which is a bridge elevating device.

When dividing the replacement construction of the bridge superstructure using the present invention step by step as follows.

Step 1: Bridge Install the temporary bridge 10 on the side of the substructure (shift or bridge) (C) of the existing superstructure (A). The temporary pier 10 is intended to bear the weight of the bridge during the transverse propulsion of the superstructure, and is installed in the bridge direction (orthogonal direction) on the side of the alternating or pier. At this time, the installation length of the temporary bridge 10 is to be more than three times the minimum bridge width so that the existing bridge can be supported after being pushed in the transverse direction.

Step 2: Install a transverse propulsion rail 21 on the temporary bridge 10.

Step 3: Install the sliding guide plate 21b and the movable rail 22 on the transverse propulsion rail 21.

Step 4: Install the flat jack 23 and the saddle 40, which is a superstructure elevating device, on the movable rail 22.

Step 5: Construct the new superstructure (B) in terms of the existing superstructure (A) of the bridge. At this time, all necessary facilities such as bridge pavement, lane painting, street light installation, bridge device installation, conduit installation, water supply pipe installation, communication pipe installation, and railway rail installation are installed.

Step 6: Install the fall prevention bracing 30 on the existing superstructure (A) and the new superstructure (B).

Step 7: Install the transverse hydraulic propeller 24 on the movable rail 22.

From step 1 to step 7, you do not need to control traffic.

Step 8: Temporarily control the vehicle and simultaneously move the existing and new superstructures (A) and (B) of the bridge in the transverse direction (required time 3 to 5 hours). At this time, through the transverse propulsion rail 21 When the hydraulic jack 24a pushes the stroke, the pusher 24b is pushed out, and the pusher 24b has a support point on the stepped reaction wall 21a provided on both sides of the transverse propulsion rail 21 and the hydraulic jack 24a. ), The movable rail 22 is pushed in the lateral direction.

In the case of such a transverse propulsion, when the inclination of the transverse propulsion rail 21 or the subtle inclination due to the settlement of the temporary piers 10 occurs, the clasp 24b is stepped to prevent the bridge from sliding in the perpendicular direction of the bridge. The anti-slip latch 24c prevents the bridge from sliding across the stepped rail when mounted on the rail.

When the stroke of the transverse propulsion hydraulic jack 24a is completed, when the stroke of the transverse propulsion hydraulic jack 24a is restored and the stroke of the transverse propulsion hydraulic jack 24a is restored, the transverse propulsion clasp 24b is automatically stepped forward. When moving over the mold reaction wall (21a) and push the stroke of the transverse propulsion hydraulic jack (24a) again to push while pushing the movable rail (22) in the transverse direction. The present invention is to replace the existing superstructure (A) with a new superstructure (B) by pushing the existing and new superstructure (A) (B) of the bridge in the transverse direction to the required position through the repetitive operation as described above.

Step 9: Communicate the vehicle

Step 10: Install the new superstructure (B), weld the bridge, connect the water pipes, connect the conduits, connect the communication lines, and install other connections.

Step 11: Remove the existing superstructure (A) and fixtures and complete the work.

The present invention after the installation of the transverse propulsion rail on the side of the existing bridge to be demolished as described above, after the newly built superstructure on the transverse propulsion rail as the existing superstructure, bridge device, conduit, water pipe, railway rail and After installing all the facilities such as street lights, the transverse propulsion hydraulic jacks can be used to replace existing bridges and newly constructed bridges in a short time of 3 to 5 hours by using nighttime without traffic.

The present invention is to produce a new superstructure on the side of the old bridge with the old structure of the old structure to put the old superstructure and the new superstructure on the transverse propulsion rails in the transverse direction to replace the bridge in construction Established a safe and economically aging bridge by providing a method to prevent the PC beam from falling and to prevent the bridge from falling off during the moving operation due to the impact of starting or braking loads that may occur during transverse movement. It can be replaced with a bridge.

In addition, the present invention has a very short control time of the vehicle and allows the entire bridge superstructure to be replaced only through temporary control at night, which has little effect on the communication of the vehicle, as well as a bridge construction to secure a bypass road. There is no need for construction, so construction costs can be reduced, and there is no fear of vehicle accidents due to sudden curves on the bypass road, thus ensuring safe operation.

Therefore, according to the present invention, the safety of drivers, pedestrians and construction is secured, and the construction cost is expected to be reduced due to the need for system recycling and bypass construction roads. It is a very useful invention which is expected to be superior in effectiveness.

Claims (6)

In the bridge superstructure replacement system for dismantling the old superstructure (A) and installing the new superstructure (B) by simultaneously pushing the entire superstructure corresponding to one span of the bridge in the transverse direction, Located inside the lower structure (shift / pier) (C) on both sides supporting the existing upper structure (A), and protrudes by the length of the bridge into the outer space on both sides of the existing upper structure (A), respectively, the width of the bridge along the direction of the bridge. Temporary piers 10 installed at a length that is about double, The transverse propulsion device 20 is installed in the crosswise direction on the temporary piers 10 and lifts the existing upper structure A to be spaced apart from the lower structure C, and the new upper structure B is constructed thereon. Wow, Fixed and installed between the PC beams (P) of the existing and new superstructures (A) and (B) to start and load the starting load and braking while moving the entire existing and new superstructures (A) and (B) collectively As a configuration consisting of a plurality of bracing 30 made by connecting the upper and lower horizontal braces 31 and the longitudinal longitudinal braces 32 that can be stretched and adjusted to prevent the upper structure is conducted by the load, The new superstructure B is installed on one side of the lateral propulsion device 20 by being positioned side by side with the existing superstructure A, and the bracings 30 are fixed between the PC beams P. After installation, the existing and the new superstructure (A) (B) is pushed simultaneously with the transverse propulsion device 20 to move the existing superstructure (A) over the other side of the transverse propulsion device (20). To dismantle and move the new superstructure (B) over the bridge (C) of the bridge to re-establish the bridge superstructure emergency replacement system, characterized in that the propulsion. The stepped reaction wall (21a) according to claim 1, wherein the transverse propulsion device (20) is installed in parallel in the crosswise direction on the temporary bridge (10) and is located below the newly formed superstructure (B). ) Is repeated and formed, and a pair of transverse propulsion rails 21 having a sliding guide plate 21b at the center and a sliding plate 22a for inducing sliding movement while in contact with the sliding guide plate 21b. The movable rail 22 and the movable rail 22 which are provided at a lower portion of the center and disposed on the lateral propulsion rail 21 and are installed to have a length corresponding to the width of the existing and new superstructures (A) and (B). And a flat jack 23 installed between the PC beams P of the existing and new superstructures A and B to raise and lower the existing and new superstructures A and B to a required height. The transverse propulsion rail 21 is bound to the PC beam P installed at the outermost edge in the new superstructure B. Bridge superstructure by transverse propulsion, characterized in that it consists of a hydraulic propellant 24 for pushing the existing and new superstructures (A) (B) laterally with support points on the stepped reaction walls (21a) Emergency replacement system. According to claim 2, The sliding guide plate 21b is continuously formed over the entire length of the propelling rail 21, the sliding plate 22a is made of a plurality of units each unit is the existing and new top Emergency replacement system of the upper structure of the bridge via the lateral propulsion, characterized in that intermittent installation on each vertical line where the PC beam (P) of the structure (A) (B). The hydraulic propeller (24) of the hydraulic jack (24a) is a hinge coupled to the rear end of the hydraulic jack (24a) and the hydraulic jack (24a) so that the up and down rotation of the hydraulic jack (24a) When the propulsion by the stroke is mounted on the stepped reaction wall (21a) while forming a support point on the stepped reaction wall (21a), when the stroke of the hydraulic jack (24a) is rotated upwards, the front stepped reaction wall (24a) is freely moved to the 21b, and the upper and lower rotation is freely hinged to the clasp (24b) and the hook formed at the rear end to the projection of the stepped reaction wall (21a) so that the existing and new top Emergency supervision system for bridge superstructures with lateral propulsion, characterized in that it consists of an anti-slip clasp (24c) that controls the structure (A) (B) is not moved arbitrarily. According to claim 1, The bracing 30 is the middle of the horizontal braces 31 are installed in parallel to the upper and lower portions of the PC beam (P) and the upper and lower horizontal braces 31 to connect and reinforce Consists of the longitudinal braces 32, the horizontal braces 31 and the longitudinal braces 32 are fixed by the fixing nut 33 while being stretched and adjusted by the combination of the screw rod (31a) and the screw pipe (31b). Bridge superstructure emergency replacement system through the transverse propulsion characterized in that. The method of claim 5, wherein the saddle 40 to protect the concrete while supporting the concrete body is installed in the lower portion of the PC beam (P), both ends of the horizontal brace 31 located on the lower side and the longitudinal brace 32 Lateral propulsion bridge emergency replacement system, characterized in that the lower end of the hinge is coupled to the saddle (40).

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