Steel structure bridge sliding temporary device and construction method

Abstract

The invention belongs to the technical field of bridge engineering, and discloses a steel structure bridge sliding temporary device and a construction method.The steel structure bridge sliding temporary device comprises a supporting assembly, and a guide rail assembly used for facilitating bridge sliding is arranged at the top end of the supporting assembly in a supporting mode; the guide rail assembly comprises steel beams arranged at the top end of the supporting assembly, and the two steel beams are parallel and arranged in the bridge sliding direction. A sliding guide rail arranged in the sliding direction of the bridge is arranged at the top end of the steel beam and used for limiting sliding of the bridge. A resistance reduction module is arranged at the top end of the sliding guide rail, and the resistance reduction module abuts against and makes contact with a bridge body of the bridge during translation. The device is scientific and reasonable in structural design, novel in translation construction process, simple in equipment, safe and reliable. All the assemblies work cooperatively, so that the bridge sliding operation is smoother, additional steps in the construction process are reduced, the construction progress is accelerated, the construction efficiency is improved, the period of the whole bridge transformation project is effectively shortened, and cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge engineering, and in particular to a temporary sliding device for a steel structure bridge and a construction method. Background Art

[0002] In railway, highway and municipal bridge projects, it is often necessary to renovate existing steel structure bridges, and the piers and supports at the bottom of the bridge need to be repaired. Therefore, in order to move the existing steel structure bridge out of the original pier as a whole, a set of steel structure bridge sliding bearing platforms must be built on one side of the pier to meet the sliding and temporary placement of the steel structure bridge.

[0003] At present, temporary devices for sliding steel structure bridges mostly use steel pipe pile foundations with supporting structures of welded main longitudinal beams, such as welded box-type or truss structures as main longitudinal beams. For example, the Chinese patent with patent number CN202311564053.1 discloses a sliding construction device for steel structure bridges, including a bracket, a lifting device arranged on the bracket; a first driving device arranged on the lifting device; a second driving device arranged on the foundation; a guide rail arranged on the first driving device and the second driving device, and the guide rail is used to arrange and install the steel box beam. The first driving device and the second driving device cooperate to drive the guide rail to move along the extension direction of the bridge to move the steel box beam to a specified position. However, the structure of this scheme is complex, and the problem of reducing translational friction resistance is not fully considered; the complex structural design leads to the difficulty of assembly and welding of the existing device, the cumbersome construction process, the long construction period, more labor consumption, higher material cost and labor cost, poor versatility, and insufficient adaptability to different geographical conditions and engineering requirements.

[0004] Therefore, the present application designs a temporary sliding device for a steel structure bridge and a construction method to solve the above-mentioned technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a temporary device for sliding a steel structure bridge and a construction method, which is particularly suitable for the construction or reconstruction of a bridge to ensure that the bridge can complete the sliding operation safely and smoothly. It is not only suitable for the translation of large-span steel beams in the reconstruction of railway bridges, but can also be widely used in other related fields of the construction industry to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a temporary device for sliding a steel structure bridge, comprising support assemblies symmetrically arranged on both sides of the bridge spanning end, the support assemblies being arranged corresponding to the bridge piers arranged on the bridge, and the top supports of the support assemblies being provided with guide rail assemblies for facilitating the sliding of the bridge;

[0007] The guide rail assembly includes a steel beam arranged at the top of the support assembly, the two steel beams are parallel and arranged along the sliding direction of the bridge; the top of the steel beam is provided with a sliding guide rail arranged along the sliding direction of the bridge, and the sliding guide rail is used to provide a limit for the sliding of the bridge;

[0008] A drag reduction module is arranged at the top end of the sliding guide rail, and the drag reduction module abuts against the beam body of the bridge during translation.

[0009] Preferably, the support assembly includes a plurality of steel column piles arranged along the translation direction of the bridge, a support steel plate is welded and fixed to the top end of the steel column, and the steel beams are sequentially welded to the top end of the support steel plate along the arrangement direction of the bridge.

[0010] Preferably, the support assembly comprises reinforced anchor piles, and the reinforced anchor piles are arranged on the sides of the steel column piles away from each other, and a first channel steel scissors brace is supported and arranged between the reinforced anchor piles and the corresponding steel column piles.

[0011] Preferably, a second channel steel scissors brace is provided between adjacent steel column piles.

[0012] Preferably, the top end of the steel beam is abutted against a first full-length steel plate, and the first full-length steel plate is welded and fixed to the sliding guide rail via a plurality of standard pressure plates.

[0013] Preferably, a second full-length steel plate is welded and fixed to the top end of the sliding guide rail along the sliding direction of the bridge, and the drag reduction module is slidably arranged on the top end of the second full-length steel plate.

[0014] Preferably, the drag reduction module comprises a stainless steel plate in sliding contact with the top end of the second full-length steel plate, a polytetrafluoroethylene plate is laid on the stainless steel plate, and the polytetrafluoroethylene plate is arranged in contact with the beam of the bridge.

[0015] The invention also discloses a sliding construction method for a steel structure bridge, comprising the following steps:

[0016] Assemble temporary steel structure bridge sliding devices at the location of the bridge to be moved;

[0017] Remove the supports and auxiliary structures of the bridge to be moved, and use jacking equipment to lift the bridge to be moved to separate it from the ground;

[0018] Extend the temporary sliding device to the bottom of the bridge after jacking up and correspond to the steel beam of the bridge;

[0019] Lower the beam onto the temporary sliding device and push the bridge to move horizontally to the designated position and then fix it;

[0020] Repair the structure to be rectified at the original location and complete the repair construction;

[0021] Move the bridge back to its original location, install the dismantled supports and auxiliary structures and secure the bridge;

[0022] Remove the temporary sliding device and complete the construction.

[0023] Preferably, during the jacking and sliding process of the bridge, multiple sets of synchronous distribution valve equipment are selected to control the synchronous jacking and lifting of the bridge in real time.

[0024] Preferably, during the sliding process of the bridge, the sliding of the bridge is performed in several times to ensure the balance of the bridge.

[0025] Compared with the prior art, the present invention has the following advantages and technical effects: the present application discloses a temporary device for sliding a steel structure bridge and a construction method thereof, the device mainly consists of three parts: a support assembly, a guide rail assembly and a drag reduction module; the support assembly is symmetrically arranged on both sides of the bridge span, precisely corresponding to the bridge pier, providing a stable support for the entire device, capable of bearing the entire weight of the bridge, ensuring the stability of the bridge during the sliding process, and effectively preventing safety hazards such as tilting and shaking; the guide rail assembly is installed at the top of the support assembly, comprising a series of steel beams arranged in parallel and extending along the sliding direction of the bridge. A sliding guide rail is specially arranged at the top of the steel beam to provide precise limit guidance for the bridge sliding, ensuring that the bridge slides smoothly in a predetermined direction, effectively preventing deviation, and ensuring the safety and accuracy of the sliding operation; the drag reduction module is slidably arranged at the top of the sliding guide rail, in close contact with the beam body during the translation of the bridge, significantly reducing the resistance during the sliding process. The friction force of the bridge during sliding is greatly reduced by sliding the drag reduction module on the sliding rail. Compared with the device without the drag reduction module, it can significantly reduce the power required to push the bridge, reduce the construction difficulty and cost, and reduce the wear on the bridge beam and temporary devices, extending their service life. The symmetrical layout design of the support assembly and the guide rail assembly enables the device to flexibly adapt to the sliding operation of steel structure bridges of various types and specifications. According to the actual size, weight and sliding requirements of the bridge, the strength of the support assembly, the length of the guide rail assembly and the performance of the drag reduction module can be flexibly adjusted, showing strong versatility and adaptability.

[0026] The structural design of the invention is scientific and reasonable, the translation construction process is novel, the equipment is simple, safe and reliable. The components work together to make the bridge sliding operation smoother, reduce the extra steps in the construction process, speed up the construction progress, improve the construction efficiency, effectively shorten the cycle of the entire bridge reconstruction project, and achieve cost savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 It is a schematic plan view of a temporary sliding device for a steel structure bridge according to the present invention;

[0029] Figure 2 It is a cross-sectional schematic diagram of a temporary sliding device for a steel structure bridge of the present invention;

[0030] Figure 3 It is a cross-sectional schematic diagram of a node of a sliding beam of a temporary sliding device for a steel structure bridge according to the present invention;

[0031] In the figure: 1. Steel column pile; 2. Steel beam; 3. Bridge pier; 4. Support steel plate; 5. First channel steel scissors brace; 6. Sliding guide rail; 7. First full-length steel plate; 8. Standard pressure plate; 9. Second full-length steel plate; 10. Stainless steel plate; 11. Polytetrafluoroethylene plate; 12. Second channel steel scissors brace; 13. Strengthened anchor pile. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-Figure 3 As shown, this embodiment provides a temporary device for sliding a steel structure bridge, including support assemblies symmetrically arranged on both sides of the bridge spanning end, the support assemblies are arranged corresponding to the bridge piers 3 arranged on the bridge, and the top supports of the support assemblies are provided with guide rail assemblies for facilitating the sliding of the bridge;

[0035] The guide rail assembly includes a steel beam 2 arranged at the top of the support assembly, and the two steel beams 2 are parallel and arranged along the sliding direction of the bridge; the top of the steel beam 2 is provided with a sliding guide rail 6 arranged along the sliding direction of the bridge, and the sliding guide rail 6 is used to provide a limit for the sliding of the bridge;

[0036] A drag reduction module is provided at the top end of the sliding guide rail 6, and the drag reduction module abuts against the beam of the bridge during translation.

[0037] The present application discloses a temporary device for sliding a steel structure bridge and a construction method thereof, the device mainly consists of three parts: a support assembly, a guide rail assembly and a drag reduction module; the support assembly is symmetrically arranged on both sides of the bridge span end, precisely corresponding to the bridge pier 3, providing a stable support for the entire device, capable of bearing the entire weight of the bridge, ensuring the stability of the bridge during the sliding process, and effectively preventing safety hazards such as tilting and shaking; the guide rail assembly is installed at the top of the support assembly, and includes a series of steel beams 2 arranged in parallel and extending along the sliding direction of the bridge. A sliding guide rail 6 is specially arranged at the top of the steel beam 2 to provide precise limit guidance for the bridge sliding, ensure that the bridge slides smoothly in a predetermined direction, effectively prevent deviation, and ensure the safety and accuracy of the sliding operation; the drag reduction module is slidably arranged at the top of the sliding guide rail 6, and is in close contact with the beam body during the translation of the bridge, significantly reducing the resistance during the sliding process. The friction force of the bridge during sliding is greatly reduced by sliding the drag reduction module on the sliding guide rail 6. Compared with the device without the drag reduction module, it can significantly reduce the power required to push the bridge, reduce the construction difficulty and cost, and reduce the wear on the bridge beam and temporary devices, extending their service life; the symmetrical layout design of the support assembly and the guide rail assembly enables the device to flexibly adapt to the sliding operation of steel structure bridges of various types and specifications. According to the size, weight and sliding requirements of the actual bridge, the strength of the support assembly, the length of the guide rail assembly and the performance of the drag reduction module can be flexibly adjusted, showing strong versatility and adaptability. The structural design of the present invention is scientific and reasonable, the translation construction process is novel, the equipment is simple, safe and reliable. The coordinated work of each component makes the bridge sliding operation smoother, reduces the extra steps in the construction process, speeds up the construction progress, improves the construction efficiency, effectively shortens the cycle of the entire bridge reconstruction project, and achieves cost savings.

[0038] In one embodiment of the present application, the steel beam 2 is made of two 500mm×300mm double H-shaped steels and is erected on the top of the support assembly.

[0039] To further optimize the solution, the support assembly includes a plurality of steel column piles 1 arranged along the translation direction of the bridge, a support steel plate 4 is welded and fixed to the top of the steel column, and the steel beams 2 are welded to the top of the support steel plate 4 in sequence along the arrangement direction of the bridge; a second channel steel scissors brace 12 is arranged between adjacent steel column piles 1. The supporting steel plate 4 is welded to the top of the steel column pile 1 to ensure uniform force on the top of the steel column and the overall stability of the bearing platform. The edge of the flange plate of the steel beam 2 is welded to several supporting steel plates 4, which plays the role of connecting and dispersing stress. Together with the steel column piles 1, it bears the weight of the bridge and provides a stable support structure for bridge sliding, ensuring that the device can bear the weight of the bridge and the reliability of the device during construction. In order to increase the integrity between adjacent steel column piles 1, the second channel steel scissors brace 12 of 22# specification is connected between adjacent steel column piles 1 to form a whole. When subjected to force, each steel column pile 1 transmits force to each other through the second channel steel scissors brace 12, and jointly bears the bridge load to enhance the integrity and stability of the support assembly, improve the bearing capacity of the device for the bridge, and reduce the risk of structural deformation caused by local uneven force.

[0040] In one embodiment of the present application, the support steel plate 4 is an A3 steel plate with a thickness of 30 mm and a plane size of 800 mm×800 mm.

[0041] In one embodiment of the present application, the steel column pile 1 is made of Φ609mm steel pipe and driven into the ground using a vibrating hammer. The length of the steel column pile 1 driven into the ground is determined by calculation based on the force.

[0042] In one embodiment of the present application, when the length of the steel column pile 1 is insufficient, welding is used to extend it, which allows for flexible adjustment.

[0043] In one embodiment of the present application, if the bearing capacity of the foundation at the position of the steel column pile 1 is large enough, the foundation of the steel column pile 1 can also adopt a concrete enlarged foundation, and a steel plate is embedded in the surface of the concrete enlarged foundation. The embedded steel plate is welded to the steel column pile 1 to prevent the steel column pile 1 from tipping over.

[0044] In one embodiment of the present application, during construction, all components are hoisted using a truck crane.

[0045] Further optimization scheme, the support assembly includes a reinforced anchor pile 13, and the reinforced anchor pile 13 is arranged on the side away from each other of the steel column piles 1 on both sides, and the first channel steel scissors brace 5 is supported and arranged between the reinforced anchor pile 13 and the corresponding steel column pile 1. The reinforced anchor pile 13 is connected to the steel column pile 1 through the first channel steel scissors brace 5 to enhance the lateral stability of the support assembly and resist the lateral force during the sliding process; during the sliding process, the reinforced anchor pile 13 and the steel column pile 1 work together, and the first channel steel scissors brace 5 connects the two as a whole to jointly resist the lateral force, improve the lateral stability of the support assembly, prevent the support assembly from lateral displacement or tipping when the bridge slides, and ensure construction safety.

[0046] In one embodiment of the present application, referring to the attached Figure 1 As shown, according to the actual geographical conditions on site, the temporary device for sliding of the steel structure bridge is arranged on both sides of the river bank or the road and positioned on one side of the bridge pier 3. Six Φ609mm columns are arranged on both sides of the river bank or the road, of which four are steel column piles 1 close to the river bank or the road side, which are mainly used to bear the weight of the bridge sliding; two reinforced anchor piles 13 for increasing lateral stability are arranged away from the steel column piles 1, and the two reinforced anchor piles 13 are 13m away from the four steel column piles close to the river bank or the road side.

[0047] To further optimize the solution, the top of the steel beam 2 is abutted with a first full-length steel plate 7, and the first full-length steel plate 7 is welded and fixed to the sliding guide rail 6 through a number of standard pressure plates 8. The first full-length steel plate 7 and the standard pressure plate 8 fix the sliding guide rail 6 to the steel beam 2, and the standard pressure plate 8 is welded and fixed to the first full-length steel plate 7 and the sliding guide rail 6 respectively, ensuring that the sliding guide rail 6 is in a stable position during the bridge sliding process, providing a reliable sliding track for the bridge; the standard pressure plate 8 tightly fixes the first full-length steel plate 7 and the sliding guide rail 6 to the steel beam 2, so that the sliding guide rail 6 can bear the bridge load together with the steel beam 2, and provide a stable track for the bridge sliding, ensuring the stability of the sliding guide rail 6, avoiding the displacement of the guide rail when the bridge slides, and ensuring the accuracy and safety of the bridge sliding.

[0048] To further optimize the solution, a second full-length steel plate 9 is welded and fixed to the top of the sliding guide rail 6 along the sliding direction of the bridge, and the drag reduction module is slidably arranged on the top of the second full-length steel plate 9. The second full-length steel plate 9 provides an installation base for the drag reduction module, so that the drag reduction module can be stably arranged on the top of the sliding guide rail 6, providing a stable installation platform for the drag reduction module, ensuring the effectiveness of the drag reduction module during the sliding process of the bridge, reducing the sliding resistance; ensuring the normal performance of the drag reduction function; when working, the drag reduction module is installed on the second full-length steel plate 9, and when the bridge slides, the drag reduction module slides on the second full-length steel plate 9 to reduce the friction between the bridge and the sliding guide rail 6.

[0049] In one embodiment of the present application, the thickness of the second full-length steel plate 9 is 2 cm.

[0050] In one embodiment of the present application, the joint of the steel beam 2 is arranged at the top of the steel column pile 1; the joint of the first full-length steel plate 7 does not need to be welded, and the joint of the sliding track and the second full-length steel plate 9 needs to be welded into a whole.

[0051] Further optimization scheme, the drag reduction module includes a stainless steel plate 10 in sliding contact with the top of the second full-length steel plate 9, and a polytetrafluoroethylene plate 11 is laid on the stainless steel plate 10, and the polytetrafluoroethylene plate 11 is arranged in contact with the beam of the bridge. The stainless steel plate 10 and the polytetrafluoroethylene plate 11 form a drag reduction module, and the friction force when the bridge slides is reduced by using the smooth surface of the stainless steel plate 10 and the low friction coefficient of the polytetrafluoroethylene plate 11; during the translation of the bridge, the polytetrafluoroethylene plate 11 contacts the bridge beam, and the stainless steel plate 10 slides on the second full-length steel plate 9, and the two work together to reduce the sliding resistance of the bridge, effectively reduce the friction force when the bridge slides, reduce the power required to push the bridge, improve construction efficiency, and reduce wear on the bridge and equipment.

[0052] In one embodiment of the present application, the thickness of the stainless steel plate 10 is 3 mm, and the thickness of the polytetrafluoroethylene plate 11 is 2 mm.

[0053] In one embodiment of the present application, the stainless steel plate and the polytetrafluoroethylene plate 11 do not need to be extended, but only need to be laid at the location of the steel bridge.

[0054] In one embodiment of the present application, in order to further reduce the frictional resistance during translation, before the translation operation, butter is manually applied to the polytetrafluoroethylene plate 11 to ensure lubrication. According to the actual situation on site, if butter is found to be missing, it is immediately replenished to ensure that all polytetrafluoroethylene plates 11 are covered with butter.

[0055] The invention also discloses a sliding construction method for a steel structure bridge, comprising the following steps:

[0056] Assemble a temporary device for sliding the steel structure bridge at the location of the bridge to be moved; according to the actual geographical conditions on site, the temporary device for sliding the steel structure bridge is arranged on both sides of the river bank or road and one side of the bridge pier 3. Four steel column piles 1 made of Φ609mm steel pipes are arranged on both sides of the river bank or road to bear the weight of the bridge sliding. Two reinforced anchor piles 13 are arranged away from the river bank or road to increase the lateral stability. The steel column piles 1 and the reinforced anchor piles 13 are driven into the ground with a vibrating hammer. The steel columns are arranged along the center line of the transverse support with a spacing of 2.3-3.3m. The specific spacing size is determined by calculation according to the force size;

[0057] Remove the supports and auxiliary structures of the bridge to be moved, and use the jacking equipment to lift the bridge to be moved to separate it from the ground; remove the connection between the bridge to be moved and the ground foundation to make the bridge free, and then use the jacking device to lift the bridge to facilitate the subsequent sliding adjustment; when lifting the bridge, select multiple sets of synchronous distribution valve equipment to control the synchronous pushing and lifting of the jacks at any time to improve the stability of the bridge;

[0058] Extend the temporary sliding device to the bottom of the bridge after jacking and correspond to the steel beam 2 of the bridge;

[0059] The beam body is lowered onto the temporary sliding device and the bridge is pushed to translate to the designated position and then fixed; the lifting device is loosened to allow the bridge to fall onto the steel beam 2, and the bridge is supported by the drag reduction module composed of the stainless steel plate 10 and the polytetrafluoroethylene plate 11; then a horizontal thrust is applied to the bridge using a horizontal jack, so that the drag reduction module drives the bridge to slide on the second full-length steel plate 9; to ensure the stability and safety of translation, a ruler is used to measure the movement during translation before translation, and the distance of each translation is set to no more than 5 cm during translation. At the same time, the translation of each stroke is monitored by an electronic dial indicator with an accuracy of 0.01 mm. When the limit value is exceeded, adjustments are made immediately to keep the translation error of the two jacks within 1 cm at all times;

[0060] Repair the structure to be rectified at the original location and complete the repair construction;

[0061] Move the bridge back to its original position, install the dismantled supports and auxiliary structures and fix the bridge; after the construction is completed, push the bridge in the opposite direction to make it return to its original position, then lift the bridge again to separate it from the drag reduction module, rebuild the dismantled supports, drop the bridge onto the repaired supports, fix the bridge and the supports, and install the auxiliary facilities back to their original positions to complete the bridge repair;

[0062] Remove the temporary sliding device and complete the construction.

[0063] In one embodiment of the present application, a reaction back must be installed before the steel bridge is translated. The reaction back is made of a steel structure and is placed on the sliding track of the lower sliding beam. The back of the steel structure is welded to the sliding track to provide a reaction force to the jack when the steel bridge is translated. The back of the steel structure can be in any form and can be any type of steel. It only needs to provide a vertical support plane to provide a vertical support surface for the horizontal jack.

[0064] In one embodiment of the present application, the reaction back can be used multiple times. After each translation distance reaches about 2m, the reaction back is removed and re-welded and fixed after moving forward. The jacks are arranged on the sliding track, and the number of jacks and the spacing between the reaction backs need to be determined according to the actual situation and scale of the project.

[0065] In one embodiment of the present application, in order to prevent damage to the steel bridge during the translation and pushing process, the stress points of the beam are reinforced before the translation operation. During pushing, a 4 cm thick steel plate is padded at the jack position on the side of the steel bridge body.

[0066] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0067] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A temporary sliding device for a steel structure bridge, characterized in that: It comprises support assemblies symmetrically arranged on both sides of the bridge spanning end, the support assemblies are arranged corresponding to the bridge piers (3) arranged on the bridge, and the top supports of the support assemblies are provided with guide rail assemblies for facilitating the sliding of the bridge; The guide rail assembly comprises a steel beam (2) arranged at the top end of the support assembly, the two steel beams (2) are parallel and arranged along the sliding direction of the bridge; the top end of the steel beam (2) is provided with a sliding guide rail (6) arranged along the sliding direction of the bridge, and the sliding guide rail (6) is used to provide a limit for the sliding of the bridge; A drag reduction module is arranged at the top end of the sliding guide rail (6), and the drag reduction module abuts against the beam body of the bridge during translation.

2. The temporary sliding device for steel structure bridge according to claim 1 is characterized in that: The support assembly comprises a plurality of steel column piles (1) arranged along the translation direction of the bridge, a support steel plate (4) is welded and fixed to the top of the steel column, and the steel beams (2) are sequentially welded to the top of the support steel plate (4) along the arrangement direction of the bridge.

3. The temporary sliding device for steel structure bridge according to claim 2 is characterized in that: The support assembly comprises a reinforcement anchor pile (13), the reinforcement anchor pile (13) being arranged on both sides of the steel column pile (1) away from each other, and a first channel steel scissors brace (5) being supported between the reinforcement anchor pile (13) and the corresponding steel column pile (1).

4. The temporary sliding device for steel structure bridge according to claim 3 is characterized in that: A second channel steel scissors brace (12) is provided between adjacent steel column piles (1).

5. The temporary sliding device for steel structure bridge according to claim 1 is characterized in that: The top end of the steel beam (2) is in contact with a first full-length steel plate (7), and the first full-length steel plate (7) and the sliding guide rail (6) are welded and fixed via a plurality of standard pressing plates (8).

6. The temporary sliding device for steel structure bridge according to claim 1 is characterized by: A second full-length steel plate (9) is welded and fixed to the top end of the sliding guide rail (6) along the sliding direction of the bridge, and the drag reduction module is slidably arranged on the top end of the second full-length steel plate (9).

7. The temporary sliding device for steel structure bridge according to claim 6 is characterized in that: The drag reduction module comprises a stainless steel plate (10) in sliding contact with the top end of the second full-length steel plate (9), a polytetrafluoroethylene plate (11) is laid on the stainless steel plate (10), and the polytetrafluoroethylene plate (11) is arranged in contact with the beam body of the bridge.

8. A sliding construction method for a steel structure bridge, characterized in that The following steps are involved: Assembling the temporary sliding device for a steel structure bridge according to any one of claims 1 to 7 at the location of the bridge to be moved; Remove the supports and auxiliary structures of the bridge to be moved, and use jacking equipment to lift the bridge to be moved to separate it from the ground; Extending the temporary sliding device to the bottom of the bridge after jacking and making it correspond to the steel beam (2) of the bridge; Lower the beam onto the temporary sliding device and push the bridge to move horizontally to the designated position and then fix it; Repair the structure to be rectified at the original location and complete the repair construction; Move the bridge back to its original location, install the dismantled supports and auxiliary structures and secure the bridge; Remove the temporary sliding device and complete the construction.

9. The sliding construction method for a steel structure bridge according to claim 8, characterized in that: During the bridge lifting and sliding process, multiple sets of synchronous distribution valve equipment are selected to control the synchronous pushing and lifting of the bridge in real time.

10. The sliding construction method for a steel structure bridge according to claim 8, characterized in that: During the process of bridge sliding, the bridge slides in several times to ensure the balance of the bridge.

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