A seismic-resistant bridge bearing bidirectional anchorage structure

Abstract

This utility model discloses a two-way anchoring structure for seismic-resistant bridge bearings, relating to the field of bridge bearing technology. It includes an upper bearing plate, with a stainless steel plate at its bottom, a flat polytetrafluoroethylene (PTFE) plate at its bottom, a spherical steel liner at its bottom, a spherical PTFE plate at its bottom, and a lower bearing plate at its bottom. Multiple seismic anchoring components are arranged between the upper and lower bearing plates. Each seismic anchoring component includes a damper, with ball heads fixed at both ends, and ball seats at one end of each ball head. By setting multiple seismic anchoring components between the upper and lower bearing plates, and using threaded connections of threaded anchor rods and long nuts, two-way stable anchoring of the upper and lower structures of the bearing is achieved, effectively avoiding the risk of loosening under dynamic loads with a single anchoring method and significantly improving the overall connection strength.

Description

Technical Field

[0001] This utility model relates to the field of bridge bearing technology, specifically to a seismic-resistant bridge bearing bidirectional anchorage structure. Background Technology

[0002] As the core load-bearing component connecting the superstructure and substructure of a bridge, the performance of bridge bearings directly determines the load-bearing stability and seismic safety of the bridge.

[0003] Existing anchoring methods are limited and are prone to bolt loosening and anchoring failure under dynamic loads such as earthquakes and strong winds, leading to the detachment of the bearing from the beam or pier and causing damage to the bridge structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a two-way anchorage structure for earthquake-resistant bridge bearings.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A seismic-resistant bridge bearing bidirectional anchoring structure includes an upper bearing plate, a stainless steel plate at the bottom of the upper bearing plate, a flat polytetrafluoroethylene (PTFE) plate at the bottom of the stainless steel plate, a spherical steel liner at the bottom of the flat PTFE plate, a spherical PTFE plate at the bottom of the spherical steel liner, a lower bearing plate at the bottom of the spherical PTFE plate, and multiple seismic anchoring components between the upper and lower bearing plates.

[0007] The seismic anchoring assembly includes a damper, with ball heads fixed at both ends of the damper. Each ball head has a ball seat at one end, with the ball head extending into the ball seat and slidingly connected to it. A long nut is rotatably connected to one end of the ball seat. Multiple threaded anchor rods are fixed on one side of both the upper and lower support plates.

[0008] Preferably, a groove is provided on one side of the long nut.

[0009] Preferably, a plurality of positioning components are installed on one side of the upper support plate and the lower support plate. The positioning components include a connecting shell, which is fixedly connected to the upper support plate and the lower support plate. An extension plate is fixedly provided on one side of the connecting shell, a pull ring is provided on one side of the connecting shell, a protruding plate is fixedly provided on one side of the pull ring, and a connecting rod is fixedly provided on one side of the protruding plate. The connecting rod passes through the connecting shell and is slidably connected to the connecting shell. A spring is sleeved on the outside of the connecting rod and is located inside the connecting shell. A locking block is fixedly connected to one end of the connecting rod, and the locking block engages with a locking groove.

[0010] Preferably, the bottom of the lower support plate is fixedly provided with multiple limiting sleeves.

[0011] Preferably, the bottom of the upper support plate is fixedly provided with multiple threaded sleeves.

[0012] Preferably, the threaded sleeve has a telescopic positioning pin connected inside by a thread, and one end of the telescopic positioning pin extends into the interior of the limiting sleeve.

[0013] Preferably, a handwheel is fixedly sleeved on the outside of the telescopic positioning column.

[0014] Preferably, the long nut is connected to the threaded anchor rod via a thread.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] By setting multiple seismic anchoring components between the upper and lower support plates, and using threaded connections of threaded anchor rods and long nuts, bidirectional stable anchoring of the upper and lower structures of the support is achieved. This effectively avoids the risk of loosening under dynamic loads with a single anchoring method, significantly improving the overall connection strength. The dampers in the seismic anchoring components can effectively absorb the impact energy generated by earthquakes, vehicle loads, etc. At the same time, the sliding connection structure between the ball head and the ball seat allows the components to rotate at multiple angles within a certain range, adapting to the horizontal displacement and rotation changes of the bridge, preventing the support from being damaged due to excessive deformation, and greatly improving the seismic performance of the support. Attached Figure Description

[0017] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial sectional view of the overall structure of this utility model;

[0020] Figure 3 This is an exploded view of the overall structural components of this utility model;

[0021] Figure 4 This is a perspective view of the seismic anchoring component of this utility model;

[0022] Figure 5 This utility model Figure 2 Enlarged view of the structure at point A in the image;

[0023] Figure 6 This utility model Figure 4 Enlarged view of the structure at point B in the image.

[0024] The diagram shows the following labels: 1. Upper support plate; 2. Limiting sleeve; 3. Threaded anchor rod; 4. Lower support plate; 5. Telescopic positioning column; 6. Threaded sleeve; 7. Handwheel; 8. Ball seat; 9. Ball head; 10. Damper; 11. Stainless steel plate; 12. Flat PTFE plate; 13. Spherical steel liner; 14. Spherical PTFE plate; 15. Long nut; 16. Connecting shell; 17. Connecting rod; 18. Protruding plate; 19. Pull ring; 20. Spring; 21. Locking block; 22. Locking groove; 23. Extension plate. Detailed Implementation

[0025] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0026] Example

[0027] like Figures 1-6 As shown, a seismic-resistant bridge bearing bidirectional anchoring structure includes an upper bearing plate 1, a stainless steel plate 11 at the bottom of the upper bearing plate 1, a flat polytetrafluoroethylene plate 12 at the bottom of the stainless steel plate 11, a spherical steel liner plate 13 at the bottom of the flat polytetrafluoroethylene plate 12, a spherical polytetrafluoroethylene plate 14 at the bottom of the spherical steel liner plate 13, and a lower bearing plate 4 at the bottom of the spherical polytetrafluoroethylene plate 14. Multiple seismic anchoring components are provided between the upper bearing plate 1 and the lower bearing plate 4.

[0028] The seismic anchoring assembly includes a damper 10, with ball heads 9 fixed at both ends of the damper 10. Each ball head 9 has a ball seat 8 at one end, extending into the ball seat 8 and slidingly connected thereto. A long nut 15 is rotatably connected to one end of the ball seat 8. Multiple threaded anchor rods 3 are fixedly mounted on one side of both the upper support plate 1 and the lower support plate 4. A handwheel 7 is fixedly fitted onto the outside of the telescopic positioning column 5. The long nut 15 at the top of the seismic anchoring assembly is aligned with the threaded anchor rod 3 on one side of the upper support plate 1. The long nut 15 is then rotated... 5. This allows for a tight connection between the threaded anchor rod 3 and the anchor rod 3 via threads. During bridge use, when encountering dynamic loads such as earthquakes, the damper 10 in the seismic anchoring assembly can effectively absorb impact energy. At the same time, the ball head 9 can slide flexibly within the ball seat 8 to adapt to the horizontal displacement and rotation changes caused by the load on the bridge, thus preventing damage to the support structure. The stainless steel plate 11, the flat polytetrafluoroethylene plate 12, the spherical steel liner plate 13, and the spherical polytetrafluoroethylene plate 14 between the upper support plate 1 and the lower support plate cooperate with each other to ensure the sliding performance and load-bearing stability of the support.

[0029] A slot 22 is provided on one side of the long nut 15. Multiple positioning components are installed on one side of the upper support plate 1 and the lower support plate 4. Each positioning component includes a connecting shell 16, which is fixedly connected to the upper support plate 1 and the lower support plate 4. An extension plate 23 is fixedly provided on one side of the connecting shell 16. A pull ring 19 is provided on one side of the connecting shell 16, and a protruding plate 18 is fixedly provided on one side of the pull ring 19. A connecting rod 17 is fixedly provided on one side of the protruding plate 18. The connecting rod 17 passes through the connecting shell 16 and is slidably connected to it. A spring 20 is sleeved on the outside of the connecting rod 17 and is located inside the connecting shell 16. A locking block 21 is fixedly connected to one end of the connecting rod 17, and the locking block 21 engages with the slot 22. Pulling the pull ring 19 in the positioning component first causes the pull ring 19 to move the connecting rod 17 outward from the connecting shell 16. As the connecting rod 17 moves, the locking block 21 at one end moves synchronously. At the same time, the spring 20 sleeved on the outside of the connecting rod 17 is compressed inside the connecting shell 16. Rotating the pull ring 19 causes the protruding plate 18 on one side of the pull ring 19 to engage with the extension plate 23 of the connecting shell 16, thereby limiting and fixing the locking block 21 and preventing the spring 20 from rebounding. Align the long nut 15 on the top of the seismic anchoring assembly with the threaded anchor rod 3 on one side of the upper support plate 1. By rotating the long nut 15, it is tightly connected to the threaded anchor rod 3 through the thread. After the connection is completed, rotate the pull ring 19 again to disengage the protruding plate 18 from the extension plate 23. The spring 20 rebounds under the action of elastic potential energy, pushing the connecting rod 17 to reset. The connecting rod 17 drives the locking block 21 to insert into the slot 22 on one side of the long nut 15, thereby locking the long nut 15 and preventing it from loosening during subsequent construction.

[0030] Multiple limiting sleeves 2 are fixedly provided at the bottom of the lower support plate 4, and multiple threaded sleeves 6 are fixedly provided at the bottom of the upper support plate 1. A telescopic positioning post 5 is connected to the inside of the threaded sleeve 6 by threads. One end of the telescopic positioning post 5 extends into the inside of the limiting sleeve 2. A handwheel 7 is fixedly fitted on the outside of the telescopic positioning post 5. By rotating the handwheel 7, the telescopic positioning post 5 is installed in the threaded sleeve 6 located at the bottom of the upper support plate 1 by threaded connection. After the seismic anchoring assembly is installed, the telescopic positioning post 5 is disassembled. By rotating the handwheel 7, the telescopic positioning post 5 is gradually disengaged from the threaded sleeve 6 by reverse rotation of the threads. After the telescopic positioning post 5 is completely disengaged from the threaded sleeve 6, it is pulled out from the limiting sleeve 2, thus completing the installation of the entire support structure.

[0031] The usage process of this utility model is as follows: the upper support plate 1 is fixed to the bottom of the bridge superstructure, and then the telescopic positioning column 5 is initially assembled. The handwheel 7 is rotated to install the telescopic positioning column 5 in the threaded sleeve 6 located at the bottom of the upper support plate 1 through a threaded connection. According to the distance between the bridge and the pier, the length of the telescopic positioning column 5 extending out of the threaded sleeve 6 is adjusted by rotating the handwheel 7, so as to provide a pre-positioning reference for the subsequent alignment of the upper support plate 1 and the lower support plate 4.

[0032] Next, the seismic anchoring assembly is connected to the upper support plate 1. First, pull the pull ring 19 in the positioning assembly. The pull ring 19 drives the connecting rod 17 to move outward of the connecting shell 16. The locking block 21 at one end of the connecting rod 17 moves synchronously. At the same time, the spring 20 sleeved on the outside of the connecting rod 17 is compressed inside the connecting shell 16. Rotate the pull ring 19 so that the protruding plate 18 on one side of the pull ring 19 engages with the extension plate 23 of the connecting shell 16, thereby limiting and fixing the locking block 21, preventing the spring 20 from rebounding, and thus preventing the seismic anchoring assembly from rebounding. The long nut 15 on the top of the vibration anchoring assembly is aligned with the threaded anchor rod 3 on one side of the upper support plate 1. By rotating the long nut 15, it is tightly connected to the threaded anchor rod 3 through the thread. After the connection is completed, the pull ring 19 is rotated again to disengage the protruding plate 18 from the extension plate 23. The spring 20 rebounds under the action of elastic potential energy, pushing the connecting rod 17 to reset. The connecting rod 17 drives the locking block 21 to insert into the locking groove 22 on one side of the long nut 15, thereby locking the long nut 15 and preventing it from loosening during subsequent construction.

[0033] After completing the installation of the relevant components of the upper support plate 1, the lower support plate 4 is fixed: the lower support plate 4 is precisely fixed on the top of the pier, ensuring that the lower support plate 4 and the upper support plate 1 are parallel and aligned. The superstructure of the bridge is slowly lowered so that the telescopic positioning column 5 at the bottom of the upper support plate 1 is precisely inserted into the limiting sleeve 2 at the top of the lower support plate 4. Through the cooperation of the telescopic positioning column 5 and the limiting sleeve 2, the coaxiality and alignment accuracy of the upper support plate 1 and the lower support plate 4 are further guaranteed. Then, according to the connection method of the seismic anchoring component and the upper support plate 1, the long nut 15 at the bottom of the seismic anchoring component is threadedly connected to the threaded anchor rod 3 on one side of the lower support plate 4. The locking is achieved by the cooperation of the locking block 21 and the locking groove 22 of the positioning component, thereby completing the bidirectional anchoring connection of multiple seismic anchoring components between the upper support plate 1 and the lower support plate 4.

[0034] After the seismic anchoring assembly is installed, the telescopic positioning column 5 is disassembled. The handwheel 7 is turned so that the telescopic positioning column 5 gradually disengages from the threaded sleeve 6 through reverse rotation of the thread. After the telescopic positioning column 5 is completely disengaged from the threaded sleeve 6, it is pulled out from the limiting sleeve 2 to complete the installation of the entire support structure. During the use of the bridge, when encountering dynamic loads such as earthquakes, the damper 10 in the seismic anchoring assembly can effectively absorb the impact energy. At the same time, the ball head 9 can slide flexibly in the ball seat 8 to adapt to the horizontal displacement and rotation changes of the bridge caused by the load, and avoid damage to the support structure. The stainless steel plate 11, the flat polytetrafluoroethylene plate 12, the spherical steel liner plate 13 and the spherical polytetrafluoroethylene plate 14 between the upper support plate 1 and the lower support plate cooperate with each other to ensure the sliding performance and load-bearing stability of the support.

[0035] In the later maintenance stage, if it is necessary to replace the seismic anchoring component, simply pull the pull ring 19 to disengage the locking block 21 from the locking groove 22, and rotate the long nut 15 to remove the seismic anchoring component from the threaded anchor rod 3. The operation is convenient and greatly reduces maintenance costs and difficulty.

[0036] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A seismic-resistant bridge bearing bidirectional anchorage structure, characterized in that: The system includes an upper support plate (1), a stainless steel plate (11) at the bottom of the upper support plate (1), a flat polytetrafluoroethylene plate (12) at the bottom of the stainless steel plate (11), a spherical steel liner plate (13) at the bottom of the flat polytetrafluoroethylene plate (12), a spherical polytetrafluoroethylene plate (14) at the bottom of the spherical steel liner plate (13), a lower support plate (4) at the bottom of the spherical polytetrafluoroethylene plate (14), and multiple seismic anchoring components between the upper support plate (1) and the lower support plate (4). The seismic anchoring assembly includes a damper (10), with ball heads (9) fixed at both ends of the damper (10). Each of the two ball heads (9) has a ball seat (8) at one end. The ball head (9) extends into the ball seat (8) and is slidably connected to the ball seat (8). A long nut (15) is rotatably connected to one end of the ball seat (8). Multiple threaded anchor rods (3) are fixed on one side of both the upper support plate (1) and the lower support plate (4).

2. The seismic-resistant bridge bearing bidirectional anchorage structure according to claim 1, characterized in that: A slot (22) is provided on one side of the long nut (15).

3. The seismic-resistant bridge bearing bidirectional anchorage structure according to claim 2, characterized in that: Multiple positioning components are installed on one side of the upper support plate (1) and the lower support plate (4). The positioning components include a connecting shell (16), which is fixedly connected to the upper support plate (1) and the lower support plate (4). An extension plate (23) is fixedly provided on one side of the connecting shell (16). A pull ring (19) is provided on one side of the connecting shell (16). A protruding plate (18) is fixedly provided on one side of the pull ring (19). A connecting rod (17) is fixedly provided on one side of the protruding plate (18). The connecting rod (17) passes through the connecting shell (16) and is slidably connected to the connecting shell (16). A spring (20) is sleeved on the outside of the connecting rod (17). The spring (20) is located inside the connecting shell (16). A locking block (21) is fixedly connected to one end of the connecting rod (17). The locking block (21) is engaged with the locking groove (22).

4. The seismic-resistant bridge bearing bidirectional anchorage structure according to claim 1, characterized in that: The bottom of the lower support plate (4) is fixed with multiple limiting sleeves (2).

5. The seismic-resistant bridge bearing bidirectional anchorage structure according to claim 1, characterized in that: The bottom of the upper support plate (1) is fixed with multiple threaded sleeves (6).

6. The seismic-resistant bridge bearing bidirectional anchorage structure according to claim 5, characterized in that: The threaded sleeve (6) has a telescopic positioning post (5) connected inside by threads, and one end of the telescopic positioning post (5) extends into the limiting sleeve (2).

7. The seismic-resistant bridge bearing bidirectional anchorage structure according to claim 6, characterized in that: The telescopic positioning column (5) is externally fitted with a handwheel (7).

8. The seismic-resistant bridge bearing bidirectional anchorage structure according to claim 1, characterized in that: The long nut (15) is connected to the threaded anchor rod (3) by threads.

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