An energy-absorbing and buffering damper for steel bridge shock absorption and its usage method

Abstract

The present invention discloses an energy-absorbing and buffering damper for steel bridge shock absorption and its usage method, including a support seat, a bridge pier and a bridge deck. A top beam structure is arranged at the top of the bridge pier, and a fixed seat is also arranged at the top of the bridge pier. In the present invention, when the bridge deck is vibrated, the vibration of the bridge deck is transmitted to the first damping rod, causing the first damping rod to perform a damped telescopic motion, reducing the influence of the vibration on the bridge deck. At the same time, the damping block moves linearly along the guide rod inside the buffer cavity along with the movement of the bridge deck. During the movement, the second damping rod performs a damped telescopic motion, and the energy-absorbing spring performs an adaptive telescopic motion. The damping block drives the connecting rod to rotate during the movement, the connecting rod drives the rotating pin to rotate, the rotating pin drives the bottom bolt seat to deflect, and the deflection of the bottom bolt seat causes the bottom end of the steel cable to move, converting the dynamic load of the bridge deck into the dynamic load of the damping block, the second damping rod and the energy-absorbing spring, so that the steel bridge has a good shock absorption and buffering effect.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bridges, and particularly relates to an energy-absorbing and buffer-type damper for steel bridge shock absorption and its usage method. Background Art

[0002] In a steel bridge structure, in order to ensure its stability under the influence of environmental factors such as wind resistance and earthquakes, shock-absorbing bearings are usually installed at the lower end surface of the steel bridge for shock absorption. However, in existing steel bridges, the bridge deck is usually spliced in a segmented manner. When subjected to vibration, only through the shock absorption of the shock-absorbing bearing, the connection part is prone to fracture displacement, and the performance of shock absorption and energy dissipation is low. Summary of the Invention

[0003] The purpose of the present invention is to propose an energy-absorbing and buffer-type damper for steel bridge shock absorption and its usage method in order to solve the above problems.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An energy-absorbing and buffer-type damper for steel bridge shock absorption and its usage method, including a support seat, a bridge pier and a bridge deck. A top beam structure is provided at the top end of the bridge pier. A fixed seat is also provided at the top end of the bridge pier. A support cross beam is provided at the bottom end of the bridge pier. A damping rod one is provided between the support cross beam and the bridge deck. Grooves are provided on the front and rear end faces of the bridge deck. A cable shock-absorbing mechanism is provided between the grooves and the fixed seat. A buffer seat is provided at the lower end face of the bridge deck. A buffer cavity is provided at the lower end face of the buffer seat. A buffer component is provided inside the buffer cavity. A connecting rod connected to the cable shock-absorbing mechanism is also provided on the buffer component.

[0006] Preferably, the top beam structure is composed of three strengthening beams. The centers of the three strengthening beams intersect with each other, and both ends are fixedly connected to the bridge pier, forming a triangular structure therebetween.

[0007] Preferably, the cable shock-absorbing mechanism includes a rotating pin installed in the groove, a cable seat installed on the fixed seat and multiple steel cables. A bottom bolt seat fixed to the rotating pin is provided inside the groove. Through holes are provided on both the bottom bolt seat and the cable seat. Both ends of the steel cable penetrate through the through holes and are connected with locking balls.

[0008] Preferably, the buffer component includes a damping block installed in the buffer cavity. A guide rod penetrating through the damping block is also provided inside the buffer cavity. The side wall of the damping block is connected to the buffer cavity through a damping rod two. Extension plates are provided on the front and rear end faces of the damping block. The extension plates are rotatably connected to the connecting rod through a rotating shaft. The other end of the connecting rod is rotatably connected to the bottom end of the rotating pin.

[0009] Preferably, an energy-absorbing spring is sleeved on the telescopic end of the second damping rod.

[0010] A method for using an energy-absorbing and buffering damper for steel bridge shock absorption includes the following steps:

[0011] S1. Install the first damping rod, the cable shock absorption mechanism, and the buffer assembly on the steel bridge;

[0012] S2. When the bridge deck is vibrated, the first damping rod undergoes a damping motion;

[0013] S3. At the same time, the damping block moves linearly back and forth along the guide rod inside the buffer cavity along with the movement of the bridge deck. During the movement, the second damping rod undergoes damping telescoping, the energy-absorbing spring undergoes adaptive telescoping, the damping block drives the connecting rod to rotate during the movement, the connecting rod drives the rotating pin to rotate, the rotating pin drives the bottom bolt seat to deflect, and the deflection of the bottom bolt seat causes the bottom end of the steel cable to move.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0015] In this application, when the bridge deck is vibrated, the vibration of the bridge deck is transmitted to the first damping rod, causing the first damping rod to undergo damping telescoping motion, reducing the influence of the vibration on the bridge deck. For the vibration of the bridge deck, at the same time, the damping block moves linearly back and forth along the guide rod inside the buffer cavity along with the movement of the bridge deck. During the movement, the second damping rod undergoes damping telescoping, the energy-absorbing spring undergoes adaptive telescoping, the damping block drives the connecting rod to rotate during the movement, the connecting rod drives the rotating pin to rotate, the rotating pin drives the bottom bolt seat to deflect, and the deflection of the bottom bolt seat causes the bottom end of the steel cable to move, converting the dynamic load of the bridge deck into the dynamic loads of the damping block, the second damping rod, and the energy-absorbing spring, so that the steel bridge has a good shock absorption and buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a three-dimensional structural schematic diagram of an energy-absorbing and buffering damper for steel bridge shock absorption provided according to an embodiment of the present invention;

[0017] Figure 2 Shows a bottom view structural schematic diagram of an energy-absorbing and buffering damper for steel bridge shock absorption provided according to an embodiment of the present invention after hiding the support seat;

[0018] Figure 3 Shows an enlarged structural schematic diagram of part A in an energy-absorbing and buffering damper for steel bridge shock absorption provided according to an embodiment of the present invention Figure 2

[0019] Legend Explanation:

[0020] ​1. Support base; 2. Bridge pier; 3. Reinforcing beam; 4. Groove; 5. Rotating pin; 6. Bottom bolt seat; 7. Steel cable; 8. Fixed seat; 9. Cable support seat; 10. Lock ball; 11. Connecting rod; 12. Support cross beam; 13. First damping rod; 14. Buffer seat; 15. Buffer cavity; 16. Guide rod; 17. Damping block; 18. Second damping rod; 19. Energy-absorbing spring; 20. Extension plate; 21. Bridge deck. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Please refer to Figures 1-3 , the present invention provides a technical solution:

[0023] An energy-absorbing and buffering type damper for steel bridge shock absorption and its use method, including a support base 1, a bridge pier 2 and a bridge deck 21. There are multiple bridge piers 2 and they are installed on both sides of the support base 1. The top of the bridge pier 2 is provided with a top beam structure, which is beneficial to enhancing the support strength of the bridge pier 2. The top of the bridge pier 2 is also provided with a fixed seat 8. The bottom of the bridge pier 2 is provided with a support cross beam 12. A first damping rod 13 is arranged between the support cross beam 12 and the bridge deck 21, which is used to reduce the displacement of the bridge deck 21 when it is vibrated. The front and rear end faces of the bridge deck 21 have grooves 4. A cable shock absorption mechanism is arranged between the grooves 4 and the fixed seat 8, which is used to enhance the stability of the bridge deck 21. The lower end face of the bridge deck 21 is provided with a buffer seat 14. The lower end face of the buffer seat 14 has a buffer cavity 15. A buffer component is arranged inside the buffer cavity 15, which is used to transfer the vibration load of the bridge deck 21 and reduce the diagnosis amplitude of the bridge deck 21. A connecting rod 11 connected to the cable shock absorption mechanism is also arranged on the buffer component.

[0024] Specifically, as Figure 1 shown, the top beam structure is composed of three reinforcing beams 3. The centers of the three reinforcing beams 3 intersect with each other, and both ends are fixedly connected to the bridge pier 2, forming a triangular structure therebetween. The triangular decoupling stock has the characteristic of high stability, which is beneficial to enhancing the strength of the bridge pier 2.

[0025] Specifically, as Figure 2As shown in the figure, the cable shock-absorbing mechanism includes a rotating pin 5 installed in the groove 4, a cable seat 9 installed on the fixed seat 8, and multiple steel cables 7. A bottom bolt seat 6 fixed to the rotating pin 5 is arranged inside the groove 4. Both the bottom bolt seat 6 and the cable seat 9 are provided with through holes. Both ends of the steel cable 7 penetrate through the through holes and are connected with locking balls 10. A triangular structure is formed among the steel cable 7, the bridge deck 21, and the bridge pier 2, which improves the stability of the bridge deck 21 while enhancing the overall stability of the steel bridge.

[0026] Specifically, as Figure 2 and Figure 3 shown in the figure, the buffer assembly includes a damping block 17 installed in the buffer cavity 15. A guide rod 16 penetrating through the damping block 17 is also arranged inside the buffer cavity 15. The side wall of the damping block 17 is connected with the buffer cavity 15 through a damping rod two 18. An energy-absorbing spring 19 is sleeved on the telescopic end of the damping rod two 18. Extension plates 20 are arranged on the front and rear end faces of the damping block 17. The extension plates 20 are rotatably connected with a connecting rod 11 through a rotating shaft. The other end of the connecting rod 11 is rotatably connected with the bottom end of the rotating pin 5. When the bridge deck 21 vibrates, the damping block 17 moves linearly back and forth along the guide rod 16 inside the buffer cavity 15 along with the movement of the bridge deck 21. During the movement, the damping rod two 18 performs damping telescoping, and the energy-absorbing spring 19 performs adaptive telescoping. The damping block 17 drives the connecting rod 11 to rotate during the movement, the connecting rod 11 drives the rotating pin 5 to rotate, the rotating pin 5 drives the bottom bolt seat 6 to deflect, and the deflection of the bottom bolt seat 6 causes the bottom end of the steel cable 7 to move, converting the dynamic load of the bridge deck 21 into the dynamic loads of the damping block 17, the damping rod two 18, and the energy-absorbing spring 19.

[0027] Specifically, a usage method of an energy-absorbing and buffering type damper for steel bridge shock absorption includes the following steps:

[0028] S1. Install the damping rod one 13, the cable shock-absorbing mechanism, and the buffer assembly on the steel bridge;

[0029] S2. When the bridge deck 21 is subjected to vibration, the damping rod one 13 undergoes damping movement;

[0030] S3. At the same time, the damping block 17 moves linearly back and forth along the guide rod 16 inside the buffer cavity 15 along with the movement of the bridge deck 21. During the movement, the damping rod two 18 performs damping telescoping, and the energy-absorbing spring 19 performs adaptive telescoping. The damping block 17 drives the connecting rod 11 to rotate during the movement, the connecting rod 11 drives the rotating pin 5 to rotate, the rotating pin 5 drives the bottom bolt seat 6 to deflect, and the deflection of the bottom bolt seat 6 causes the bottom end of the steel cable 7 to move, converting the dynamic load of the bridge deck 21 into the dynamic loads of the damping block 17, the damping rod two 18, and the energy-absorbing spring 19.

[0031] In summary, for the energy-absorbing and buffering damper for steel bridge shock absorption and its usage method provided in this embodiment, when the bridge deck 21 is vibrated, the vibration of the bridge deck 21 is transmitted to the first damping rod 13, causing the first damping rod 13 to perform damping telescopic movement, reducing the influence of the vibration on the bridge deck 21. Meanwhile, the damping block 17 moves linearly and reciprocally along the guide rod 16 inside the buffer cavity 15 along with the movement of the bridge deck 21. During the movement, the second damping rod 18 performs damping telescopic movement, and the energy-absorbing spring 19 performs adaptive telescopic movement. The damping block 17 drives the connecting rod 11 to rotate during the movement, the connecting rod 11 drives the rotating pin 5 to rotate, the rotating pin 5 drives the bottom bolt seat 6 to deflect, and the deflection of the bottom bolt seat 6 causes the bottom end of the steel cable 7 to move, converting the dynamic load of the bridge deck 21 into the dynamic loads of the damping block 17, the second damping rod 18, and the energy-absorbing spring 19, enabling the steel bridge to have a good shock absorption and buffering effect.

[0032] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy-absorbing and buffering damper for steel bridge shock absorption, comprising a support seat (1), a bridge pier (2) and a bridge deck (21), characterized in that, A top beam structure is provided at the top end of the pier (2). A fixed seat (8) is also provided at the top end of the pier (2). A supporting cross beam (12) is provided at the bottom end of the pier (2). A damping rod one (13) is provided between the supporting cross beam (12) and the bridge deck (21). Grooves (4) are provided at the front and rear end faces of the bridge deck (21). A cable shock absorption mechanism is provided between the grooves (4) and the fixed seat (8). A buffer seat (14) is provided at the lower end face of the bridge deck (21). A buffer cavity (15) is provided at the lower end face of the buffer seat (14). A buffer assembly is provided inside the buffer cavity (15). A connecting rod (11) connected to the cable shock absorption mechanism is also provided on the buffer assembly; The cable shock absorption mechanism includes a rotating pin (5) installed in the groove (4), a cable seat (9) installed on the fixed seat (8), and multiple steel cables (7). A bottom bolt seat (6) fixed to the rotating pin (5) is provided inside the groove (4). Through holes are provided on both the bottom bolt seat (6) and the cable seat (9). Both ends of the steel cable (7) penetrate through the through holes and are connected with locking balls (10); The buffer assembly includes a damping block (17) installed in the buffer cavity (15). A guide rod (16) penetrating through the damping block (17) is also provided inside the buffer cavity (15). The side wall of the damping block (17) is connected to the buffer cavity (15) through a damping rod two (18). Extension plates (20) are provided at the front and rear end faces of the damping block (17). The extension plates (20) are rotatably connected to the connecting rod (11) through a rotating shaft. The other end of the connecting rod (11) is rotatably connected to the bottom end of the rotating pin (5).

2. The energy-absorbing and buffering type damper for steel bridge shock absorption according to claim 1, wherein, The top beam structure is composed of three strengthening beams (3). The centers of the three strengthening beams (3) intersect with each other, and both ends are fixedly connected to the pier (2), forming a triangular structure therebetween.

3. An energy-absorbing and buffer-type damper for steel bridge shock absorption according to claim 1, characterized in that, An energy absorption spring (19) is sleeved on the telescopic end of the damping rod two (18).

4. A method for using an energy-absorbing and buffering damper for steel bridge shock absorption according to any one of claims 1-3, characterized in that, Including the following steps: S1. Install the damping rod one (13), the cable shock absorption mechanism, and the buffer assembly on the steel bridge; S2. When the bridge deck (21) is vibrated, the damping rod one (13) undergoes damping motion; S3. At the same time, the damping block (17) moves linearly back and forth along the guide rod (16) inside the buffer cavity (15) following the movement of the bridge deck (21). During the movement, the damping rod two (18) undergoes damping telescoping, the energy absorption spring (19) undergoes adaptive telescoping. The damping block (17) drives the connecting rod (11) to rotate during the movement. The connecting rod (11) drives the rotating pin (5) to rotate. The rotating pin (5) drives the bottom bolt seat (6) to deflect. The deflection of the bottom bolt seat (6) causes the bottom end of the steel cable (7) to move.

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