Shockproof buffering device for expressway bridge

Abstract

The utility model discloses an expressway bridge shockproof buffering device, and belongs to the technical field of shockproof buffering devices.The expressway bridge shockproof buffering device comprises a base, a damping groove is formed in the base, a bearing plate is arranged in the damping groove, and a pier is fixedly connected to the top of the bearing plate; a damping box is fixedly mounted on one side of the pier on the upper surface of the base; according to the shock-absorbing and energy-dissipating bridge, shock force borne by the bridge body can be preliminarily buffered and reduced through the first shock-absorbing and buffering units, vertically-downward shock impact force borne by the bridge body is further buffered and released through the second buffer springs, shock absorption and energy dissipation are conveniently conducted again through the elastic shock-absorbing pads and the second dampers, and the shock-absorbing and energy-dissipating effects are improved. By means of the device, vibration force borne by the bridge body can be buffered and reduced multiple times, vibration can be weakened multiple times, and therefore good anti-seismic protection can be conducted on the bridge body, the service life of the bridge body can be prolonged, and the safety performance of the bridge body during use is ensured.

Description

Technical Field

[0001] This application relates to the technical field of earthquake-proof and shock-absorbing devices, and particularly relates to an earthquake-proof and shock-absorbing device for highway bridges. Background Art

[0002] A bridge generally refers to a structure erected over rivers, lakes and seas to enable vehicles, pedestrians, etc. to pass smoothly. To adapt to the modern rapidly developing transportation industry, a bridge is also extended to a building that is erected across mountain streams, poor geological conditions or to meet other traffic needs to make passage more convenient. Earthquake action is one of the important reasons for the damage of bridge structures. At the same time, the vibration generated by the long-term action of vehicle loads will also cause damage to bridge structures. Therefore, earthquake-proof and shock-absorbing devices need to be set during the design and construction of bridges.

[0003] Currently, the commonly used earthquake-proof and shock-absorbing device structures usually use a single shock-absorbing pad or shock absorber for shock absorption. The load borne by the shock-absorbing pad or shock absorber is relatively large, resulting in poor shock absorption effect, making the bridge easily damaged when subjected to long-term vibration, and reducing the service life of the bridge. Therefore, an improvement is now made to an earthquake-proof and shock-absorbing device for highway bridges. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, this application provides an earthquake-proof and shock-absorbing device for highway bridges, which overcomes the deficiencies of the prior art and aims to solve the problem that the commonly used earthquake-proof and shock-absorbing device structures usually use a single shock-absorbing pad or shock absorber for shock absorption, the load borne by the shock-absorbing pad or shock absorber is relatively large, resulting in poor shock absorption effect, making the bridge easily damaged when subjected to long-term vibration, and reducing the service life of the bridge.

[0005] To achieve the above object, this application provides the following technical solution: An earthquake-proof and shock-absorbing device for highway bridges, including a base, a shock-absorbing groove is opened inside the base, a load-bearing plate is arranged inside the shock-absorbing groove, a bridge pier is fixedly connected to the top of the load-bearing plate, a shock-absorbing box is fixedly installed on the upper surface of the base on one side of the bridge pier, a first shock-absorbing and buffering unit is slidably connected inside the shock-absorbing box, the bridge pier is fixedly connected to the first shock-absorbing and buffering unit through a fixing block, an elastic shock-absorbing pad is fixedly installed on the inner bottom wall of the shock-absorbing groove, a plurality of placement grooves are opened on the upper surface of the elastic shock-absorbing pad, a damper two is fixedly installed inside the placement groove, a guide rod is slidably inserted into the load-bearing plate, both ends of the guide rod are fixedly installed on the inner wall of the shock-absorbing groove, and a buffer spring two is sleeved on the outer surface of the guide rod below the load-bearing plate.

[0006] By adopting the above technical solution, the first shock absorption and buffering unit can initially buffer and reduce the seismic force received by the bridge body. The vertical downward shock impact force borne by the bridge body is further buffered and energy-dissipated by the second buffer spring. The elastic shock pad and the second damper are used to facilitate shock absorption and energy dissipation again. The device can buffer and reduce the seismic force received by the bridge body multiple times, weaken the vibration multiple times, thereby providing good seismic protection for the bridge body, extending the service life of the bridge body, and ensuring the safety performance during the use of the bridge body.

[0007] As a preferred technical solution of the present application, the number of the shock absorption boxes, the first shock absorption and buffering units, and the fixing blocks is two, and the two shock absorption boxes, the first shock absorption and buffering units, and the fixing blocks are symmetrically distributed about the bridge pier.

[0008] By adopting the above technical solution, it is convenient to share the seismic force received by the bridge main body, enabling it to bear a greater shock absorption load and improving the shock absorption effect.

[0009] As a preferred technical solution of the present application, the first shock absorption and buffering unit includes a moving block slidably connected inside the shock absorption box. One outer wall of the moving block close to the bridge pier is fixedly connected with a first buffer spring, and the other end of the first buffer spring is fixedly connected with the inner wall of the shock absorption box. The other outer wall of the moving block is fixedly installed with a first damper, and the other end of the first damper is fixedly installed on the inner wall of the shock absorption box. The top of the moving block is fixedly installed with a first connecting seat, and a rotating rod is rotatably installed inside the first connecting seat. The rotating rod is rotatably connected with the fixing block through a second connecting seat.

[0010] By adopting the above technical solution, when the bridge body moves downward under the influence of the seismic force, the impact force generated by the vibration will be transmitted to the rotating rod. The moving block slides inside the shock absorption box under the influence of the rotating rod. The vibration received by the moving block can be buffered and reduced through the deformation of the first buffer spring, and the vibration received by the moving block can be shock-absorbed and energy-dissipated through the first damper. That is, the seismic force received by the bridge body can be initially buffered and reduced by the first shock absorption and buffering unit, and good seismic protection can be provided for the bridge body.

[0011] As a preferred technical solution of the present application, a limiting hole is formed inside the moving block. Moving grooves are symmetrically formed on both sides of the outer wall of the shock absorption box at the positions of the limiting hole. A limiting rod is rotatably connected inside the limiting hole, and the limiting rod is slidably connected inside the moving groove. Limiting blocks are fixedly installed at both ends of the limiting rod on one side of the moving groove.

[0012] By adopting the above technical solution, by providing a moving groove, a limiting rod and a limiting hole, the moving block can slide inside the shock-absorbing box, and by providing a limiting block, the limiting rod can be prevented from disengaging from the inside of the moving groove.

[0013] As a preferred technical solution of the present application, the top of the elastic shock-absorbing pad abuts against the bottom of the load-bearing plate, and the tops of several of the second dampers abut against the bottom of the load-bearing plate.

[0014] By adopting the above technical solution, the vertical downward shock impact force borne by the bridge body is shock-absorbed and energy-dissipated by the elastic shock-absorbing pad and the second damper, that is, good seismic protection can be provided for the bridge body.

[0015] As a preferred technical solution of the present application, the number of the guide rods is four, and the four guide rods are evenly distributed in a linear array inside the shock-absorbing groove, and both ends of the second buffer spring are respectively connected to the bottom of the shock-absorbing groove and the bottom of the load-bearing plate.

[0016] By adopting the above technical solution, the vertical downward shock impact force borne by the bridge body is buffered and energy-dissipated by the second buffer spring, that is, good seismic protection can be provided for the bridge body.

[0017] As a preferred technical solution of the present application, fixing holes are symmetrically formed on the outer walls on both sides of the pier, the inner side wall of the fixing block is arc-shaped, and a plugging hole is formed on the outer wall on the other side of the fixing block. The fixing block is threadedly connected with a fixing bolt through the plugging hole, the front end of the fixing bolt is inside the fixing hole, and the fixing bolt is adapted to the fixing hole.

[0018] By adopting the above technical solution, it is convenient to fixedly install the fixing block on the outer wall of the pier.

[0019] The beneficial effects of the present application:

[0020] In the present utility model, the first shock-absorbing and buffering unit provided can initially buffer and reduce the shock force received by the bridge body, the vertical downward shock impact force borne by the bridge body is further buffered and energy-dissipated by the second buffer spring, and by the elastic shock-absorbing pad and the second damper, it is convenient to perform shock absorption and energy dissipation again. The shock force received by the bridge body can be buffered and reduced multiple times by this device, and the shock is weakened multiple times, so that good seismic protection can be provided for the bridge body, the service life of the bridge body can be extended, and the safety performance during the use of the bridge body can be ensured.

[0021] Referring to the following description and the accompanying drawings, specific embodiments of the present utility model are disclosed in detail, indicating the ways in which the principles of the present utility model can be adopted. It should be understood that the embodiments of the present utility model are not limited in scope thereby. Brief Description of the Drawings

[0022] Figure 1 It is a front sectional structure schematic diagram of the present application;

[0023] Figure 2 It is a schematic diagram of the partial structure disassembly of the present application;

[0024] Figure 3 It is a schematic diagram of the structure of the first shock absorption and buffering unit of the present application;

[0025] Figure 4 It is an installation schematic diagram of the fixing block of the present application.

[0026] In the figure: 1, base; 2, shock absorption groove; 3, load-bearing plate; 4, bridge pier; 5, shock absorption box; 6, fixing block; 7, first shock absorption and buffering unit; 71, moving block; 72, damper one; 73, buffer spring one; 74, connecting seat one; 75, rotating rod; 76, connecting seat two; 77, limiting hole; 8, guide rod; 9, buffer spring two; 10, elastic shock absorption pad; 11, placement groove; 12, damper two; 13, moving groove; 14, limiting rod; 15, limiting block; 16, fixing hole; 17, insertion hole; 18, fixing bolt. Detailed Description of the Invention

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0028] Refer to Figures 1-4, A seismic shock-absorbing and buffering device for highway bridges, comprising a base 1. A shock-absorbing groove 2 is provided inside the base 1. A load-bearing plate 3 is arranged inside the shock-absorbing groove 2. A bridge pier 4 is fixedly connected to the top of the load-bearing plate 3. A shock-absorbing box 5 is fixedly installed on the upper surface of the base 1 on one side of the bridge pier 4. A first shock-absorbing and buffering unit 7 is slidably connected inside the shock-absorbing box 5. The bridge pier 4 is fixedly connected to the first shock-absorbing and buffering unit 7 through a fixing block 6. An elastic shock-absorbing pad 10 is fixedly installed on the inner bottom wall of the shock-absorbing groove 2. A plurality of placement grooves 11 are provided on the upper surface of the elastic shock-absorbing pad 10. A damper two 12 is fixedly installed inside the placement groove 11. A guide rod 8 is slidably inserted inside the load-bearing plate 3. Both ends of the guide rod 8 are fixedly installed on the inner wall of the shock-absorbing groove 2. A buffer spring two 9 is sleeved on the outer surface of the guide rod 8 below the load-bearing plate 3. During use, the first shock-absorbing and buffering unit 7 provided can initially buffer and reduce the seismic force received by the bridge body. The buffer spring two 9 further buffers and dissipates the vertical downward shock impact force borne by the bridge body. Through the elastic shock-absorbing pad 10 and the damper two 12, it is convenient to perform shock absorption and energy dissipation again. Through this device, the seismic force received by the bridge body can be buffered and reduced multiple times, and the vibration can be weakened multiple times, thereby being able to provide good seismic protection for the bridge body, extend the service life of the bridge body, and ensure the safety performance during the use of the bridge body.

[0029] In this embodiment, as Figure 1 and 2 shown, the number of the shock-absorbing boxes 5, the first shock-absorbing and buffering units 7 and the fixing blocks 6 is two, and the two shock-absorbing boxes 5, the first shock-absorbing and buffering units 7 and the fixing blocks 6 are symmetrically distributed about the bridge pier 4. During use, it is convenient to share the seismic force received by the bridge main body, enabling it to bear a greater shock-absorbing load and improving the shock-absorbing effect.

[0030] In this embodiment, as Figure 3As shown in the figure, the first shock absorption and buffering unit 7 includes a moving block 71 slidably connected inside the shock absorption box 5. On the outer wall of the side of the moving block 71 close to the bridge pier 4, a first buffer spring 73 is fixedly connected, and the other end of the first buffer spring 73 is fixedly connected to the inner wall of the shock absorption box 5. On the outer wall of the other side of the moving block 71, a first damper 72 is fixedly installed, and the other end of the first damper 72 is fixedly installed on the inner wall of the shock absorption box 5. On the top of the moving block 71, a first connecting seat 74 is fixedly installed. Inside the first connecting seat 74, a rotating rod 75 is rotatably installed. The rotating rod 75 is rotatably connected to the fixed block 6 through a second connecting seat 76. When in use, when the bridge body moves downward under the influence of the seismic force, the impact force generated by the vibration will be transmitted to the rotating rod 75. Affected by the rotating rod 75, the moving block 71 slides inside the shock absorption box 5. Through the deformation of the first buffer spring 73, the vibration received by the moving block 71 can be buffered and reduced. Through the first damper 72, the vibration received by the moving block 71 can be damped and energy dissipated. That is, the seismic force received by the bridge body can be initially buffered and reduced by the first shock absorption and buffering unit 7, that is, good earthquake protection can be provided for the bridge body.

[0031] In this embodiment, as Figure 3 shown, a limiting hole 77 is opened inside the moving block 71. On both sides of the limiting hole 77 on the outer wall of the shock absorption box 5, moving grooves 13 are symmetrically opened. Inside the limiting hole 77, a limiting rod 14 is rotatably connected, and the limiting rod 14 is slidably connected inside the moving groove 13. At both ends of the limiting rod 14 located on one side of the moving groove 13, limiting blocks 15 are fixedly installed. When in use, by providing the moving groove 13, the limiting rod 14 and the limiting hole 77, the moving block 71 can slide inside the shock absorption box 5. By providing the limiting blocks 15, the limiting rod 14 can be prevented from disengaging from the inside of the moving groove 13.

[0032] In this embodiment, as Figure 2 shown, the top of the elastic shock absorption pad 10 abuts against the bottom of the load-bearing plate 3, and the tops of several second dampers 12 abut against the bottom of the load-bearing plate 3. When in use, through the elastic shock absorption pad 10 and the second dampers 12, the vertical downward shock impact force borne by the bridge body is damped and energy dissipated, that is, good earthquake protection can be provided for the bridge body.

[0033] In this embodiment, as Figure 2 shown, the number of guide rods 8 is four, and the four guide rods 8 are evenly distributed in a linear array inside the shock absorption groove 2. The two ends of the second buffer spring 9 are respectively connected to the bottom of the shock absorption groove 2 and the bottom of the load-bearing plate 3. When in use, through the second buffer spring 9, the vertical downward shock impact force borne by the bridge body is buffered and energy dissipated, that is, good earthquake protection can be provided for the bridge body.

[0034] In this embodiment, as Figure 4As shown in the figure, fixing holes 16 are symmetrically formed on the outer walls on both sides of the pier 4. The inner wall of the fixing block 6 is arranged in an arc shape, and a plugging hole 17 is formed on the outer wall of the other side of the fixing block 6. A fixing bolt 18 is connected to the fixing block 6 through the plugging hole 17 in a threaded manner. The front end of the fixing bolt 18 is inside the fixing hole 16, and the fixing bolt 18 is adapted to the fixing hole 16. During use, it is convenient to fixedly install the fixing block 6 on the outer wall of the pier 4.

[0035] Working principle: When the bridge body moves downward under the influence of the seismic force, the impact force generated by the vibration will be transmitted to the rotating rod 75. The moving block 71 slides inside the shock absorption box 5 under the influence of the rotating rod 75. The deformation of the first buffer spring 73 can buffer and reduce the vibration received by the moving block 71. The first damper 72 can damp and dissipate the vibration received by the moving block 71. That is, the first shock absorption and buffer unit 7 can preliminarily buffer and reduce the seismic force received by the bridge body. The second buffer spring 9 further buffers and dissipates the vertical downward vibration impact force borne by the bridge body. Through the elastic shock absorption pad 10 and the second damper 12, it is convenient to damp and dissipate energy again. Through this device, the seismic force received by the bridge body can be buffered and reduced multiple times, and the vibration can be weakened multiple times, so as to provide good earthquake resistance protection for the bridge body, extend the service life of the bridge body, and ensure the safety performance of the bridge body during use.

[0036] The above are only the preferred embodiments of the present application and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An earthquake-proof and shock-absorbing device for highway bridges, comprising a base (1), characterized in that, A shock-absorbing groove (2) is formed inside the base (1). A load-bearing plate (3) is arranged inside the shock-absorbing groove (2). A bridge pier (4) is fixedly connected to the top of the load-bearing plate (3). A shock-absorbing box (5) is fixedly installed on the upper surface of the base (1) on one side of the bridge pier (4). A first shock-absorbing and buffering unit (7) is slidably connected inside the shock-absorbing box (5). The bridge pier (4) is fixedly connected to the first shock-absorbing and buffering unit (7) through a fixing block (6). An elastic shock-absorbing pad (10) is fixedly installed on the inner bottom wall of the shock-absorbing groove (2). A plurality of placement grooves (11) are formed on the upper surface of the elastic shock-absorbing pad (10). A damper two (12) is fixedly installed inside the placement groove (11). A guide rod (8) is slidably inserted into the load-bearing plate (3). Both ends of the guide rod (8) are fixedly installed on the inner wall of the shock-absorbing groove (2). A buffer spring two (9) is sleeved on the outer surface of the guide rod (8) below the load-bearing plate (3).

2. The earthquake-proof and shock-absorbing device for highway bridges according to claim 1, characterized in that The number of the shock-absorbing boxes (5), the first shock-absorbing and buffering units (7) and the fixing blocks (6) is two, and the two shock-absorbing boxes (5), the first shock-absorbing and buffering units (7) and the fixing blocks (6) are symmetrically distributed about the bridge pier (4).

3. An anti-seismic buffer device for highway bridges according to claim 1, characterized in that, The first shock-absorbing and buffering unit (7) includes a moving block (71) slidably connected inside the shock-absorbing box (5). One side outer wall of the moving block (71) close to the bridge pier (4) is fixedly connected with a buffer spring one (73). The other end of the buffer spring one (73) is fixedly connected with the inner wall of the shock-absorbing box (5). A damper one (72) is fixedly installed on the other side outer wall of the moving block (71). The other end of the damper one (72) is fixedly installed on the inner wall of the shock-absorbing box (5). A connecting seat one (74) is fixedly installed on the top of the moving block (71). A rotating rod (75) is rotatably installed inside the connecting seat one (74). The rotating rod (75) is rotatably connected to the fixing block (6) through a connecting seat two (76).

4. An earthquake-proof buffer device for highway bridges according to claim 3, characterized in that, A limiting hole (77) is formed inside the moving block (71). Moving grooves (13) are symmetrically formed on both sides of the outer wall of the shock-absorbing box (5) corresponding to the limiting hole (77). A limiting rod (14) is rotatably connected inside the limiting hole (77), and the limiting rod (14) is slidably connected inside the moving groove (13). Limiting blocks (15) are fixedly installed at both ends of the limiting rod (14) on one side of the moving groove (13).

5. The earthquake-proof and shock-absorbing device for highway bridges according to claim 1, characterized in that, The top of the elastic shock-absorbing pad (10) abuts against the bottom of the load-bearing plate (3), and the tops of the plurality of dampers two (12) abut against the bottom of the load-bearing plate (3).

6. The earthquake-proof and shock-absorbing device for highway bridges according to claim 1, characterized in that The number of the guide rods (8) is four, and the four guide rods (8) are evenly distributed in a linear array inside the shock-absorbing groove (2). Both ends of the buffer spring two (9) are respectively connected to the bottom of the shock-absorbing groove (2) and the bottom of the load-bearing plate (3).

7. An earthquake-proof buffer device for highway bridges according to claim 1, characterized in that, On both outer walls of the pier (4), fixing holes (16) are symmetrically formed. The inner wall of the fixing block (6) is arranged in an arc shape, and on the other outer wall of the fixing block (6), a plugging hole (17) is formed. The fixing block (6) is threadedly connected with a fixing bolt (18) through the plugging hole (17). The front end of the fixing bolt (18) is inside the fixing hole (16), and the fixing bolt (18) is adapted to the fixing hole (16).

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