Arch rib wind-resistant structure and wind-resistant method for steel truss arch bridge suspension splicing construction

Abstract

The application belongs to the technical field of bridges, and particularly relates to an arch rib wind-resistant structure and a wind-resistant method for steel truss arch bridge suspension construction. In view of the poor bearing performance of the arch bridge in the prior art in actual use and the lack of corresponding lateral protection devices, the arch rib wind-resistant structure comprises a base plate and an arch bridge body. The arch rib wind-resistant structure comprises a plurality of base covers which are arranged at equal intervals on the top of the base plate. The top of each base cover is fixedly provided with a support beam. The top end of the support beam is fixedly provided with a mounting plate. The plurality of mounting plates are connected with the bottom of the arch bridge body. The arch rib wind-resistant structure can provide a plurality of support mounting points for the arch bridge body, thereby effectively improving the stability of the arch bridge body during installation. After the installation of the arch bridge body is completed, the arch rib wind-resistant structure can provide stable lateral elastic buffer support force for the arch bridge body, thereby protecting the arch bridge body from lateral wind and improving the protection effect of the arch bridge body.

Description

A wind-resistant arch rib structure and wind-resistant method for cantilever construction of steel truss arch bridges Technical Field

[0001] This invention relates to the field of bridge technology, and in particular to a wind-resistant arch rib structure and wind-resistant method for the cantilever construction of steel truss arch bridges. Background Technology

[0002] Arch bridges are a widely used type of bridge on highways in my country. In recent years, with the improvement of steel production and quality in my country, steel arch bridges have experienced rapid and vigorous development domestically. Currently, the large-span truss arch bridges already built in China include: Chaotianmen Bridge (span 552m) and Dashengguan Yangtze River Bridge (span 2x336m), etc. The main truss arches are constructed using a balanced cantilever assembly method with a hinged cable-stayed system and temporary tie rods.

[0003] There are still some shortcomings in the existing technology for the construction of arch bridges:

[0004] The current arch bridge is only connected to the foundation at both ends of the riverbank, which results in low support performance and poor load-bearing capacity in later use.

[0005] The current arch bridges were not equipped with corresponding lateral support devices during construction. When the bridges are subjected to crosswinds, they lack corresponding protective devices, which can easily lead to damage to the bridges.

[0006] To address the aforementioned problems, this invention proposes a wind-resistant arch rib structure and wind-resistant method for the cantilever construction of steel truss arch bridges. Summary of the Invention

[0007] This invention provides a wind-resistant arch rib structure and wind-resistant method for the cantilever construction of steel truss arch bridges, which solves the shortcomings of existing arch bridges in terms of poor load-bearing capacity and lack of corresponding lateral protection devices during actual use.

[0008] This invention provides the following technical solution:

[0009] A wind-resistant arch rib structure for cantilever construction of a steel truss arch bridge includes a base plate and an arch bridge body. The wind-resistant arch rib structure includes:

[0010] Multiple base covers are evenly spaced on the top of the base plate. A support beam is fixedly installed on the top of the base cover, and an mounting plate is fixedly installed on the top of the support beam. Multiple mounting plates are connected to the bottom of the arch bridge body to support the arch bridge body. A guide plate is fixedly installed on one side of the base cover.

[0011] Positioning mechanisms are installed on both sides of the base cover. The positioning mechanisms are connected to the top of the substrate and are used to stably install the base cover on the substrate.

[0012] A support frame is fixedly installed on the top of the substrate, and multiple flow holes are evenly spaced on the inner walls of both sides of the support frame.

[0013] The support mechanism is installed on top of the support frame and is connected to multiple support beams to provide lateral buffering force for the multiple support beams.

[0014] The adjustment mechanism is installed on the top inner wall of the support frame. Multiple sliding holes are symmetrically opened on the top inner wall of the support frame. The top of the adjustment mechanism passes through the multiple sliding holes and extends to the top of the support frame. The adjustment mechanism is connected to the support mechanism.

[0015] In one possible design, multiple support plates are symmetrically fixedly mounted on the top of the substrate. The support plates are located inside the corresponding base cover. The two sides of the support plates are in contact with the inner walls of the two sides of the base cover, respectively. Elastic buffer plates are fixedly mounted on the other two sides of the support plates. The elastic buffer plates are in contact with the inner wall of one side of the corresponding base cover.

[0016] In one possible design, the positioning mechanism includes a fixed plate fixedly mounted on one side of the base cover, a mounting bracket fixedly mounted on the top of the base plate, a movable plate slidably connected inside the mounting bracket, a locking assembly mounted on the top of the movable plate, the top end of the locking assembly passing through the top inner wall of the mounting bracket and the fixed plate and extending above the fixed plate, the locking assembly being connected to the fixed plate, and a limiting assembly connected to the bottom of the movable plate, the limiting assembly being connected to the top of the base plate.

[0017] In one possible design, the locking assembly includes a threaded tube fixedly mounted on the top of the movable plate, with a fixing bolt threaded inside the threaded tube. The top of the fixing bolt passes through the top inner wall of the mounting bracket and the top of the fixing plate, and the fixing bolt is connected to the fixing plate.

[0018] In one possible design, the limiting assembly includes a limiting rod fixedly installed at the bottom of the movable plate. Two connecting rings are symmetrically slidably sleeved on the limiting rod. Two elastic steel plates are symmetrically fixedly installed on the top of the connecting rings. The bottom of the elastic steel plates is fixedly connected to the inner wall of one side of the mounting frame. The inner sides of the two elastic steel plates are in contact with the same force-bearing rod, which is fixedly installed on the top of the base plate.

[0019] In one possible design, the support mechanism includes a fixed frame fixedly installed on the top of the support frame. Multiple connecting rods are slidably connected through the fixed frame at equal intervals. A first U-shaped frame is fixedly installed at both ends of each connecting rod. Two connecting bolts are connected through the first U-shaped frame, and the same second U-shaped frame is connected to the two connecting bolts. A support beam passes through the area between the first U-shaped frame and the second U-shaped frame and is clamped to the first U-shaped frame and the second U-shaped frame respectively. Two buffer components, both located within the fixed frame, are symmetrically connected to the connecting rods. The buffer components are connected to the adjustment mechanism.

[0020] In one possible design, the buffer assembly includes a pressure ring fixedly sleeved on a connecting rod, a force-bearing ring slidably sleeved on the connecting rod between two pressure rings, a buffer spring fixedly installed on one side of the force-bearing ring, the buffer spring being sleeved on the connecting rod, an adjusting ring fixedly installed on one end of the buffer spring, the adjusting ring being slidably sleeved on the connecting rod, and the adjusting ring being connected to an adjusting mechanism.

[0021] In one possible design, the adjustment mechanism includes a positioning plate fixedly mounted on the inner wall of the top of the support frame. The positioning plate is rotatably connected to a drive shaft, one end of which is rotatably connected to the inner wall of the top of the support frame. Multiple rotating shafts are rotatably connected at equal intervals on the inner wall of the support frame. Two threaded grooves with opposite thread directions are symmetrically opened on the rotating shafts. Threaded plates are threaded onto the threaded grooves. The top of the threaded plates passes through corresponding sliding holes and extends to the top of the support frame. The threaded plates are fixedly connected to corresponding adjustment rings. A worm gear located between the two threaded plates is fixedly sleeved on the rotating shaft. Multiple worms are fixedly sleeved at equal intervals on the drive shaft, and the worms mesh with the corresponding worm gears.

[0022] In one possible design, a connecting plate is fixedly mounted on one end of the drive shaft, and a plug rod is slidably connected through the eccentric position of the connecting plate. A positioning plate has multiple positioning slots at equal intervals on the side near the connecting plate. One end of the plug rod is movably engaged with each of the multiple positioning slots. A brake spring is sleeved on the plug rod, and the two ends of the brake spring are fixedly connected to one side of the connecting plate and the other end of the plug rod, respectively.

[0023] The wind-resistant method for the arch rib wind-resistant structure used in the cantilever construction of the steel truss arch bridge includes the following steps:

[0024] S1. After the base cover is fitted onto the support plate, two elastic buffer plates can be used to provide lateral support for the base cover.

[0025] S2. Insert the fixing bolt into the threaded tube from the fixing plate. When the fixing bolt is rotated, the threaded tube can be moved upward. At this time, the four corresponding elastic steel plates can bend and bear force. Therefore, the elastic steel plates can provide downward pulling force to the moving plate. Through the pulling of the threaded tube and the fixing bolt, a continuous downward pulling force can be provided to the base cover, so that the base cover and the base plate can be stably connected.

[0026] S3. Connect the arch bridge body to multiple support beams via corresponding mounting plates;

[0027] S4. The first and second U-shaped frames wrap and clamp the corresponding support beams, which enables the connecting rod to be stably connected to the support beam. When the arch bridge body is subjected to lateral wind force, the lateral force can be transferred to the connecting rod and apply pressure to the buffer spring. The buffer spring under stress can use its elastic potential energy to provide stable lateral support force to the connecting rod.

[0028] S5. By rotating the drive shaft, multiple shafts are driven to rotate. This causes two adjusting rings located on the same connecting rod to move in opposite directions along the axis of the connecting rod. This allows for adjustment of the initial elastic force of the buffer spring, so as to provide appropriate lateral support force to the arch bridge body.

[0029] S6. By pushing the insert rod, the insert rod is inserted into the corresponding positioning groove, thereby positioning the connecting plate and braking the drive shaft at the same time.

[0030] In this invention, after the base cover is fitted onto the support plate, two elastic buffer plates provide lateral support for the base cover, offering a certain buffering force when water impacts it. Furthermore, the guide plate on the outer side of the base cover diverts the water flow, preventing direct impact. Therefore, this enhances the protection of the arch bridge body. When the fixing bolt is inserted into the threaded pipe from the fixing plate and rotated, the threaded pipe moves upward. This upward movement of the threaded pipe causes the moving plate to move upward, which in turn causes the limiting rod to move the two connecting rings upward. The upward movement of the connecting rings provides additional support. When tension is applied to the two elastic steel plates connected to it, the support of the force-bearing rod provides support, allowing the elastic steel plates to bend around the force-bearing rod. This allows all four corresponding elastic steel plates to bend and bear force simultaneously. The elastic steel plates under force provide downward tension to the moving plate. Through the pulling of the threaded pipe and fixing bolts, a continuous downward tension is provided to the base cover, ensuring a stable connection between the base cover and the base plate. By using the first and second U-shaped frames to wrap and clamp the corresponding support beams, the connecting rods are stably connected to the support beams, and the arch bridge body is subjected to... After the lateral wind force, the lateral force can be transferred to the connecting rod, applying pressure to the buffer spring. The buffer spring, under stress, can utilize its elastic potential energy to provide stable lateral support to the connecting rod. This allows the arch bridge to provide lateral support when subjected to crosswinds, exhibiting good wind resistance. In actual use, rotating the drive shaft drives multiple worm gears to rotate. Under the meshing transmission of the corresponding worm wheels, multiple rotating shafts can rotate synchronously. The threaded transmission of the two symmetrically arranged threaded grooves on the rotating shafts further enhances the rotation. Moving the two threaded plates in opposite directions causes the two adjusting rings on the same connecting rod to move in opposite directions along the axis of the connecting rod. This adjusts the initial spring force of the buffer spring, providing suitable lateral support for the arch bridge body and thus providing stable support. After adjusting the initial support force of the buffer spring, the insert rod can be pushed to insert it into the corresponding positioning groove. This positions the connecting plate and brakes the drive shaft, ensuring that the multiple adjusting rings remain in stable positions and providing stable support for the arch bridge body.

[0031] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0032] In this invention, after the base cover is fitted onto the support plate, two elastic buffer plates can be used to provide lateral support for the base cover. When water flows into the base cover, they can provide a certain buffering force. Furthermore, the guide plate set on the outside of the base cover can guide the water flow and prevent the water flow from directly impacting the base cover. Therefore, after the arch bridge body is protected, the protection effect can be improved.

[0033] In this invention, when the fixing bolt is inserted into the threaded tube from the fixing plate and the fixing bolt is rotated, the threaded tube can be moved upward. At this time, the four corresponding elastic steel plates can bend and bear force. Therefore, the elastic steel plates can provide downward pulling force to the moving plate. Through the pulling of the threaded tube and the fixing bolt, a continuous downward pulling force can be provided to the base cover, thereby enabling a stable connection between the base cover and the substrate.

[0034] In this invention, by using the first U-shaped frame and the second U-shaped frame to wrap and clamp the corresponding support beam, the connecting rod and the support beam can be stably connected. When the arch bridge body is subjected to lateral wind force, the lateral force can be transferred to the connecting rod and apply pressure to the buffer spring. The buffer spring in the stressed state can use its elastic potential energy to provide a stable lateral support force to the connecting rod. In this way, when the arch bridge body is subjected to crosswind, the buffer spring can provide lateral support force to the arch bridge body, and it can have good wind resistance.

[0035] In this invention, during actual use, rotating the transmission shaft drives multiple rotating shafts to rotate. This causes two adjusting rings located on the same connecting rod to move in opposite directions along the axis of the connecting rod. This allows for adjustment of the initial elastic force of the buffer spring, providing appropriate lateral support to the arch bridge body and thus providing stable support for the arch bridge body.

[0036] This invention provides multiple support installation points for the arch bridge body, thereby effectively improving the stability of the arch bridge body during installation. After the arch bridge body is installed, it provides a stable lateral elastic buffer support force, which can provide good protection for the arch bridge body when it is subjected to crosswinds, thus improving the protective effect of the arch bridge body. Attached Figure Description

[0037] Figure 1 is a three-dimensional schematic diagram of the overall structure of the wind-resistant arch rib structure for the cantilever construction of a steel truss arch bridge provided in an embodiment of the present invention.

[0038] Figure 2 is a three-dimensional schematic diagram of the connection structure of multiple base covers, multiple support beams and multiple mounting plates of the wind-resistant arch rib structure for the cantilever construction of steel truss arch bridge provided in the embodiment of the present invention.

[0039] Figure 3 is a three-dimensional schematic diagram of the fixing plate, fixing bolts, threaded pipe and support frame connection structure of the arch rib wind-resistant structure for the cantilever construction of steel truss arch bridge provided in the embodiment of the present invention.

[0040] Figure 4 is a three-dimensional schematic diagram of the support plate, two elastic buffer plates, base cover and support beam connection structure of the arch rib wind-resistant structure for the cantilever construction of steel truss arch bridge provided in the embodiment of the present invention.

[0041] Figure 5 is a three-dimensional schematic diagram of the transmission shaft and multiple connecting rod connection structure of the arch rib wind-resistant structure for the cantilever construction of the steel truss arch bridge provided in the embodiment of the present invention.

[0042] Figure 6 is a schematic diagram of part A in Figure 5 of the wind-resistant arch rib structure for cantilever construction of steel truss arch bridge provided in an embodiment of the present invention.

[0043] Figure 7 is a three-dimensional schematic diagram of the transmission shaft, two buffer springs and connecting rod connection structure of the wind-resistant arch rib structure for the cantilever construction of steel truss arch bridge provided in the embodiment of the present invention.

[0044] Figure 8 is a schematic diagram of part B in Figure 7 of the wind-resistant arch rib structure for cantilever construction of steel truss arch bridge provided in an embodiment of the present invention.

[0045] Figure label:

[0046] 1. Base plate; 2. Base cover; 3. Support beam; 4. Mounting plate; 5. Arch bridge body; 6. Guide plate; 7. Fixing plate; 8. Mounting frame; 9. Moving plate; 10. Threaded pipe; 11. Fixing bolt; 12. Limiting rod; 13. Connecting ring; 14. Elastic steel plate; 15. Force-bearing rod; 16. Support plate; 17. Elastic buffer plate; 18. Support frame; 19. Flow hole; 20. Fixing frame; 21. Connecting rod; 22. First U-shaped frame; 23. Connecting bolt; 24. Second U-shaped frame; 25. Pressure ring; 26. Force-bearing ring; 27. Buffer spring; 28. Adjusting ring; 29. ​​Threaded plate; 30. Positioning plate; 31. Drive shaft; 32. Rotating shaft; 33. Threaded groove; 34. Worm gear; 35. Worm; 36. Positioning groove; 37. Connecting disc; 38. Insert rod; 39. Braking spring. Detailed Implementation

[0047] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0048] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0049] Example 1

[0050] Referring to Figures 1-5, a wind-resistant arch rib structure for cantilever construction of a steel truss arch bridge according to this embodiment includes a base plate 1, multiple base covers 2, a support frame 18, and an arch bridge body 5. Multiple base covers 2 are evenly spaced on the top of the base plate 1. A support beam 3 is fixedly installed on the top of the base cover 2. An installation plate 4 is fixedly installed on the top of the support beam 3. Multiple installation plates 4 are all connected to the bottom of the arch bridge body 5 to support the arch bridge body 5. A guide plate 6 is fixedly installed on one side of the base cover 2. A positioning mechanism is installed on both sides of the base cover 2. The positioning mechanism is connected to the top of the base plate 1 to stably install the base cover 2 on the base plate 1. The support frame 18 is fixedly installed on the top of the base plate 1. Multiple flow holes 19 are evenly spaced on the inner walls of both sides of the support frame 18.

[0051] Referring to Figure 4, multiple support plates 16 are symmetrically fixedly installed on the top of the substrate 1. The support plates 16 are located inside the corresponding base cover 2. The two sides of the support plates 16 are in contact with the inner walls of the two sides of the base cover 2. Elastic buffer plates 17 are fixedly installed on the other two sides of the support plates 16. The elastic buffer plates 17 are in contact with the inner wall of the corresponding side of the base cover 2. When the base cover 2 is fitted onto the support plates 16, the base cover 2 can be positioned. By using the elastic buffer plates 17 on both sides of the support plates 16 to keep in contact with the inner wall of the base cover 2, the elastic buffer plates 17 can provide elastic support for the base cover 2 when it is impacted by lateral water flow, thereby improving the overall buffering strength of the base cover 2.

[0052] Referring to Figures 1 and 3, the positioning mechanism includes a fixed plate 7 fixedly installed on one side of the base cover 2, a mounting bracket 8 fixedly installed on the top of the base plate 1, a movable plate 9 slidably connected inside the mounting bracket 8, a locking assembly installed on the top of the movable plate 9, the top end of the locking assembly passing through the top inner wall of the mounting bracket 8 and the fixed plate 7 and extending above the fixed plate 7, the locking assembly being connected to the fixed plate 7, and a limit assembly connected to the bottom of the movable plate 9, the limit assembly being connected to the top of the base plate 1. By driving the locking assembly, the movable plate 9 can be moved upward, at which time the limit assembly is subjected to force through the movable plate 9. In the case of a fixed arch bridge, the limiting assembly for handling the stress state can provide a downward pulling force to the base cover 2 through the moving plate 9 and the fixed plate 7, thereby stably installing the base cover 2 on the base plate 1. In Figure 3, the locking assembly includes a threaded tube 10 fixedly installed on the top of the moving plate 9. A fixing bolt 11 is threadedly connected to the threaded tube 10. The top of the fixing bolt 11 passes through the top inner wall of the mounting bracket 8 and the top of the fixed plate 7, respectively. The fixing bolt 11 is connected to the fixed plate 7. By twisting the fixing bolt 11, under the threaded transmission action with the threaded tube 10, the screw can be driven... The grooved tube 10 moves upward along the fixing bolt 11, thereby driving the moving plate 9 to one side, so that the limiting component is under force, so that the base cover 2 can be positioned and installed. In Figure 3, the limiting component includes a limiting rod 12 fixedly installed at the bottom of the moving plate 9. Two connecting rings 13 are symmetrically slidably sleeved on the limiting rod 12. Two elastic steel plates 14 are symmetrically fixedly installed on the top of the connecting rings 13. The bottom of the elastic steel plates 14 is fixedly connected to the inner wall of the bottom of one side of the mounting frame 8. The inner side of the two elastic steel plates 14 contacts the same force-bearing rod 15. The force-bearing rod 15 is fixedly installed on the base plate. At the top of 1, when the moving plate 9 moves upward, the four elastic steel plates 14 connected to the two connecting rings 13 can be pulled upward by the limiting rod 12 and the two connecting rings 13. At this time, under the support of the force rod 15, the elastic steel plates 14 can be supported, so that the elastic steel plates 14 can be bent and are under stress. At this time, the elastic steel plates 14 can provide a downward pulling force to the moving plate 9. Through the pulling of the threaded tube 10 and the fixing bolt 11, a continuous downward pulling force can be provided to the base cover 2, so that the base cover 2 can be stably connected to the base plate 1.

[0053] Example 2

[0054] Referring to Figures 2 and 5-8, based on Embodiment 1, a support mechanism and an adjustment mechanism are also proposed for the arch rib wind-resistant structure for the cantilever construction of the steel truss arch bridge proposed in Embodiment 1. The support mechanism is installed on the top of the support frame 18 and is connected to multiple support beams 3 to provide lateral buffer force for the multiple support beams 3. The adjustment mechanism is installed on the top inner wall of the support frame 18. Multiple sliding holes are symmetrically opened on the top inner wall of the support frame 18. The top of the adjustment mechanism passes through multiple sliding holes and extends to the top of the support frame 18. The adjustment mechanism is connected to the support mechanism.

[0055] Referring to Figures 2 and 5, the support mechanism includes a fixed frame 20 fixedly installed on the top of the support frame 18. Multiple connecting rods 21 are slidably connected through the fixed frame 20 at equal intervals. A first U-shaped frame 22 is fixedly installed at both ends of each connecting rod 21. Two connecting bolts 23 are connected through the first U-shaped frame 22, and the same second U-shaped frame 24 is connected to the two connecting bolts 23. The support beam 3 passes through the area between the first U-shaped frame 22 and the second U-shaped frame 24 and is clamped to both the first U-shaped frame 22 and the second U-shaped frame 24 respectively. Two buffer components, both located within the fixed frame 20, are symmetrically connected to the connecting rods 21. The buffer components are connected to the adjustment mechanism. By using the first U-shaped frame 22 and the second U-shaped frame 24 to wrap and clamp the corresponding support beam 3, the connecting rod 21 and the support beam 3 can be stably connected. Furthermore, the two buffer components on the connecting rods 21 can provide elastic support for the movement of the connecting rods 21 in two directions, thereby supporting the arch bridge body 5 under load. When crosswinds occur, the system provides necessary cushioning support. As shown in Figures 5 and 6, the cushioning assembly includes a pressure ring 25 fixedly sleeved on the connecting rod 21. A force-bearing ring 26 is slidably sleeved on the connecting rod 21 between the two pressure rings 25. A buffer spring 27 is fixedly installed on one side of the force-bearing ring 26. The buffer spring 27 is sleeved on the connecting rod 21, and an adjusting ring 28 is fixedly installed on one end of the buffer spring 27. The adjusting ring 28 is slidably sleeved on the connecting rod 21 and connected to an adjusting mechanism. When the connecting rod 21 is subjected to a lateral thrust, it can drive the pressure ring 25 to move laterally, thereby applying pressure to the corresponding buffer spring 27, so that the buffer spring 27 is in a stressed state. The buffer spring 27 in a stressed state can use its elastic potential energy to provide a stable lateral support force to the connecting rod 21. Thus, when the arch bridge body 5 is subjected to crosswinds, the buffer spring 27 can provide lateral support force to the arch bridge body 5, and has good wind resistance.

[0056] Referring to Figures 5, 6, and 7, the adjustment mechanism includes a positioning plate 30 fixedly mounted on the inner wall of the top of the support frame 18. A drive shaft 31 is rotatably connected to the positioning plate 30. One end of the drive shaft 31 is rotatably connected to the inner wall of the top of the support frame 18. Multiple rotating shafts 32 are rotatably connected at equal intervals on the inner wall of the support frame 18. Two threaded grooves 33 with opposite thread directions are symmetrically opened on the rotating shafts 32. Threaded plates 29 are threadedly connected to the threaded grooves 33. The top of the threaded plates 29 passes through corresponding sliding holes and extends to the support. Above the frame 18, the threaded plate 29 is fixedly connected to the corresponding adjusting ring 28. A worm gear 34 located between the two threaded plates 29 is fixedly sleeved on the rotating shaft 32. Multiple worms 35 are fixedly sleeved at equal intervals on the transmission shaft 31. The worms 35 mesh with the corresponding worm gears 34. By rotating the transmission shaft 31, the multiple worms 35 are driven to rotate. Under the meshing transmission action with the corresponding worm gears 34, the multiple rotating shafts 32 can be driven to rotate. Thus, under the threaded transmission action with the two threaded plates 29, the rotation can... By driving the two threaded plates 29 to move towards each other along the axis of the rotating shaft 32, the positions of the two adjusting rings 28 located on the same connecting rod 21 can be adjusted, thus adjusting the tightness of the corresponding buffer spring 27. In Figure 8, a connecting plate 37 is fixedly installed at one end of the transmission shaft 31. A plug rod 38 is slidably connected through the eccentric position of the connecting plate 37. The positioning plate 30 has multiple positioning slots 36 evenly spaced on the side near the connecting plate 37. One end of the plug rod 38 is movably engaged with the multiple positioning slots 36. A brake spring 39 is sleeved on the plug rod 38. The two ends of the brake spring 39 are fixedly connected to one side of the connecting plate 37 and the other end of the plug rod 38, respectively. After the positions of the multiple adjusting rings 28 are adjusted by rotating the transmission shaft 31, the plug rod 38 can be pushed to insert it into the corresponding positioning slot 36. This positions the connecting plate 37 and brakes the transmission shaft 31, thus ensuring that the multiple adjusting rings 28 remain in a stable position.

[0057] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wind-resistant arch rib structure for cantilever construction of a steel truss arch bridge, comprising a base plate (1) and an arch bridge body (5), characterized in that, The arch rib wind-resistant structure includes: multiple base covers (2), which are evenly spaced on the top of the base plate (1), with a support beam (3) fixedly installed on the top of the base cover (2), and an installation plate (4) fixedly installed on the top of the support beam (3). The multiple installation plates (4) are all connected to the bottom of the arch bridge body (5) for supporting the arch bridge body (5). A guide plate (6) is fixedly installed on one side of the base cover (2). Positioning mechanisms are installed on both sides of the base cover (2), and the positioning mechanisms are connected to the top of the base plate (1) for stably installing the base cover (2) on the base plate (1). A support frame (18) is fixedly installed on the top of the base plate (1), and multiple flow holes (19) are evenly spaced on the inner walls of both sides of the support frame (18). A support mechanism is installed on the top of the support frame (18), and the support mechanism is connected to multiple support beams (3) for providing lateral buffer force for the multiple support beams (3).An adjustment mechanism is installed on the top inner wall of the support frame (18). Multiple sliding holes are symmetrically opened on the top inner wall of the support frame (18). The top of the adjustment mechanism passes through these sliding holes and extends above the support frame (18). The adjustment mechanism is connected to the support mechanism. The support mechanism includes a fixed frame (20) fixedly installed on the top of the support frame (18). Multiple connecting rods (21) are slidably connected through the fixed frame (20) at equal intervals. A first U-shaped frame (22) is fixedly installed at both ends of each connecting rod (21). Two connecting bolts (23) are connected through the first U-shaped frame (22). The same second U-shaped frame (24) is connected to the two connecting bolts (23). The support beam (3) passes through the first U-shaped frame. The area between the first U-shaped frame (22) and the second U-shaped frame (24) is clamped to the first U-shaped frame (22) and the second U-shaped frame (24) respectively. Two buffer components, both located in the fixed frame (20), are symmetrically connected to the connecting rod (21). The buffer components are connected to the adjustment mechanism. The buffer components include a pressure ring (25) fixedly sleeved on the connecting rod (21). A force-bearing ring (26) located between the two pressure rings (25) is slidably sleeved on the connecting rod (21). A buffer spring (27) is fixedly installed on one side of the force-bearing ring (26). The buffer spring (27) is sleeved on the connecting rod (21). An adjustment ring (28) is fixedly installed at one end of the buffer spring (27). The adjustment ring (28) is slidably sleeved on the connecting rod (21). Above, the adjusting ring (28) is connected to the adjusting mechanism, which includes a positioning plate (30) fixedly installed on the inner wall of the top of the support frame (18). The positioning plate (30) is rotatably connected to a drive shaft (31). One end of the drive shaft (31) is rotatably connected to the inner wall of the top of the support frame (18). Multiple rotating shafts (32) are rotatably connected at equal intervals on the inner wall of the support frame (18). Two threaded grooves (33) with opposite thread directions are symmetrically opened on the rotating shafts (32). Threaded plates (29) are threadedly connected to the threaded grooves (33). The top of the threaded plates (29) passes through the corresponding sliding holes and extends to the top of the support frame (18). The threaded plates (29) are fixedly connected to the corresponding adjusting rings (28). The rotating shafts (32) are connected to the corresponding adjusting rings (28). A worm gear (34) is fixedly mounted between two threaded plates (29). Multiple worms (35) are fixedly mounted at equal intervals on the drive shaft (31), meshing with the corresponding worm gear (34). A connecting plate (37) is fixedly mounted at one end of the drive shaft (31). A sliding rod (38) is slidably connected through the eccentric position of the connecting plate (37). Multiple positioning grooves (36) are evenly spaced on the side of the positioning plate (30) near the connecting plate (37). One end of the rod (38) is movably engaged with each of the positioning grooves (36). A brake spring (39) is mounted on the rod (38), with both ends of the brake spring (39) fixedly connected to one side of the connecting plate (37) and the other end of the rod (38).

2. The arch rib wind-resistant structure for cantilever construction of steel truss arch bridges according to claim 1, characterized in that, Multiple support plates (16) are symmetrically fixedly installed on the top of the substrate (1). The support plates (16) are located inside the corresponding base cover (2). The two sides of the support plates (16) are in contact with the inner walls of the two sides of the base cover (2). Elastic buffer plates (17) are fixedly installed on the other two sides of the support plates (16). The elastic buffer plates (17) are in contact with the inner wall of one side of the corresponding base cover (2).

3. The arch rib wind-resistant structure for cantilever construction of steel truss arch bridges according to claim 2, characterized in that, The positioning mechanism includes a fixed plate (7) fixedly installed on one side of the base cover (2), a mounting frame (8) fixedly installed on the top of the base plate (1), a movable plate (9) slidably connected inside the mounting frame (8), a locking component installed on the top of the movable plate (9), the top of the locking component passing through the top inner wall of the mounting frame (8) and the fixed plate (7) and extending to the top of the fixed plate (7), the locking component being connected to the fixed plate (7), and a limiting component connected to the bottom of the movable plate (9), the limiting component being connected to the top of the base plate (1).

4. The arch rib wind-resistant structure for cantilever construction of steel truss arch bridges according to claim 3, characterized in that, The locking assembly includes a threaded tube (10) fixedly installed on the top of the movable plate (9). A fixing bolt (11) is threaded inside the threaded tube (10). The top of the fixing bolt (11) passes through the top inner wall of the mounting bracket (8) and the top of the fixing plate (7), respectively. The fixing bolt (11) is connected to the fixing plate (7).

5. The arch rib wind-resistant structure for cantilever construction of a steel truss arch bridge according to claim 4, characterized in that, The limiting assembly includes a limiting rod (12) fixedly installed at the bottom of the movable plate (9). Two connecting rings (13) are symmetrically slidably sleeved on the limiting rod (12). Two elastic steel plates (14) are symmetrically fixedly installed on the top of the connecting rings (13). The bottom of the elastic steel plates (14) is fixedly connected to the inner wall of the bottom of one side of the mounting frame (8). The inner sides of the two elastic steel plates (14) are contacted by the same force rod (15). The force rod (15) is fixedly installed on the top of the base plate (1).

6. The wind-resistant method for the arch rib wind-resistant structure used in the cantilever construction of a steel truss arch bridge according to claim 5, characterized in that, Includes the following steps: S1. After the base cover (2) is fitted onto the support plate (16), two elastic buffer plates (17) can be used to provide lateral support for the base cover (2); S2. The fixing bolt (11) is inserted into the threaded tube (10) through the fixing plate (7), and when the fixing bolt (11) is rotated, the threaded tube (10) can be driven to move upward. At this time, the four corresponding elastic steel plates (14) can be bent and subjected to force, so the elastic steel plates (14) can provide downward tension for the moving plate (9). Through the pulling of the threaded tube (10) and the fixing bolt (11), the base cover (2) can be provided with continuous downward tension, so that the base cover (2) and the base plate (1) can be stably connected; S3. The arch bridge body (5) is connected to the multiple support beams (3) through the corresponding multiple mounting plates (4); S4. The first U-shaped frame (22) and the second U-shaped frame (24) wrap and clamp the corresponding support beams (3), so that the connecting rods can be connected to the support beams (3). (21) It is stably connected to the support beam (3), and after the arch bridge body (5) is subjected to lateral wind force, the lateral force can be transmitted to the connecting rod (21) to apply pressure to the buffer spring (27). The buffer spring (27) under stress can use its elastic potential energy to provide a stable lateral support force to the connecting rod (21); S5, By rotating the drive shaft (31) to drive multiple rotating shafts (32) to rotate, at this time, two adjusting rings (28) located on the same connecting rod (21) can be driven to move towards each other along the axis of the connecting rod (21), so as to adjust the initial elastic force of the buffer spring (27) so as to provide a suitable lateral support force to the arch bridge body (5); S6, By pushing the insert rod (38), the insert rod (38) is inserted into the corresponding positioning groove (36), so as to brake the drive shaft (31) while positioning the connecting plate (37).

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