Damping connecting device for ancient bridge

Abstract

The utility model discloses an ancient bridge shock absorption connecting device which is used for shock absorption connection between a bridge and a pier and comprises shock absorption connecting pieces, the shock absorption connecting pieces are respectively fixed at the lower end of the bridge and on the side face of the pier, spring dampers are arranged on the shock absorption connecting pieces fixed on the side face of the pier, and the spring dampers are connected with buffer chains. The other end of the buffer chain is connected with a damping connecting piece fixed at the lower end of the bridge; the damping connecting piece comprises a bottom plate and a connecting plate, the connecting plate is arranged above the bottom plate, and a spring assembly is arranged between the bottom plate and the connecting plate. The anti-seismic device can effectively absorb power generated by earthquakes, improves the anti-seismic performance of a bridge, and is simple in structure and convenient to maintain.

Description

Technical Field

[0001] The utility model belongs to the field of bridge engineering, and in particular relates to a shock-absorbing connection device for ancient bridges. Background Art

[0002] Ancient bridges are not only an important part of transportation but also witnesses of history, containing rich culture and wisdom. Their structural stability and seismic performance are crucial, especially in earthquake-prone areas. The traditional connection method between bridges and bridge piers, such as rigid connection, often cannot effectively absorb the kinetic energy generated by earthquakes, resulting in the bridge structure being prone to damage under strong earthquake action. To solve this problem, some elastic connection devices have emerged in the prior art to improve the seismic performance of ancient bridges. The Chinese utility model patent with the publication number CN218365547U discloses a device for preventing falling beams of precast beams, which relates to the technical field of civil bridge construction engineering and includes a traction component, a tensile seat arranged at one end of the traction component, and a fixing piece arranged at the other end of the traction component. The tensile seat is fixed on one side of the bridge pier, and the fixing piece is arranged on one side of the precast beam body. Among them, the fixing piece includes: a bottom plate that fits on the bottom surface of the precast beam body; side plates that are arranged on both sides of the bottom plate and extend along the outer side surface of the precast beam body to the outside of the web of the precast beam body; and a locking piece that penetrates through the side plates on both sides and the web of the precast beam body to fix the side plates and the bottom plate on the precast beam body, but this device has the problem of poor shock-absorbing effect. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a shock-absorbing connection device for ancient bridges. The utility model can effectively absorb the power generated by earthquakes, improve the seismic performance of bridges, and at the same time has a simple structure and is easy to maintain.

[0004] The technical solution of the utility model: A shock-absorbing connection device for ancient bridges, used for shock-absorbing connection between a bridge and a bridge pier, includes shock-absorbing connectors. The shock-absorbing connectors are respectively fixed at the lower end of the bridge and on the side surface of the fixed bridge pier. Among them, a spring damper is arranged on the shock-absorbing connector fixed on the side surface of the bridge pier, and the spring damper is connected with a buffer chain. The other end of the buffer chain is connected with the shock-absorbing connector fixed at the lower end of the bridge; the shock-absorbing connector includes a bottom plate and a connecting plate. The connecting plate is arranged above the bottom plate, and a spring assembly is arranged between the bottom plate and the connecting plate.

[0005] In the aforementioned shock-absorbing connection device for ancient bridges, a group of reinforcing ribs are arranged on the bottom plate; a group of rotating connecting plates extend from the connecting plate, and a rotating shaft is arranged through the rotating connecting plates.

[0006] In the aforementioned shock-absorbing connection device for ancient bridges, the spring assembly includes compression sleeves arranged at both ends of the connecting plate. Both ends of the bottom plate are provided with spring rods that are inserted into the compression sleeves and are slidably matched with the compression sleeves. A first spring is sleeved on the spring rods, and both ends of the first spring are respectively connected to the compression sleeve and the bottom plate. The spring assembly further includes a limiting rod that slidably penetrates through the middle of the connecting plate, and the lower end of the limiting rod is fixed to the bottom plate. A third spring is sleeved on the limiting rod and is located between the bottom plate and the connecting plate.

[0007] In the aforementioned shock-absorbing connection device for ancient bridges, a plurality of limiting members are slidably penetrated through the connecting plate. The top of the limiting member is provided with a protrusion located above the connecting plate, and the bottom of the limiting member is fixed to the reinforcing rib. A second spring is sleeved on the limiting member and is located between the reinforcing rib and the connecting plate.

[0008] In the aforementioned shock-absorbing connection device for ancient bridges, the spring damper includes a housing. The two ends of the housing are respectively provided with a first connecting head and a second connecting head. A compression rod connecting the first connecting head and the second connecting head is arranged inside the housing. A fourth spring is sleeved on the compression rod, and both ends of the fourth spring are respectively connected to the upper end and the lower end of the compression rod.

[0009] In the aforementioned shock-absorbing connection device for ancient bridges, the buffer chain includes a first horseshoe buckle, a plurality of annular buckles, and a second horseshoe buckle that are connected in sequence. The rotating shaft of the shock-absorbing connecting member fixed to the lower end of the bridge penetrates through the first horseshoe buckle, and the shock-absorbing connecting member fixed to the lower end of the bridge is hinged to the first horseshoe buckle. The second connecting head is hinged to the second horseshoe buckle.

[0010] In the aforementioned shock-absorbing connection device for ancient bridges, the rotating shaft of the shock-absorbing connecting member fixed to the side of the bridge pier penetrates through the first connecting head, and the shock-absorbing connecting member fixed to the side of the bridge pier is hinged to the first connecting head.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] Through the combination of the spring assembly, the buffer chain, and the spring damper, the present utility model can effectively absorb and disperse seismic forces, significantly improving the seismic performance of the bridge. The present utility model is applicable to various types of bridges, especially the reinforcement of ancient bridges, and can adapt to different construction conditions and environmental requirements. In addition, the present utility model adopts combinations such as the bottom plate, the connecting plate, and the rotating connecting plate, simplifying the connection structure, reducing the production cost, and facilitating installation and maintenance. By using the limiting members and the limiting rods in cooperation with the first, second, and third springs, the present utility model enhances the stability and reliability of the connection, ensuring the stability during long-term operation. Description of the Drawings

[0013] Figure 1 is the front view of the present utility model;

[0014] Figure 2 is a schematic diagram of the connection with the bridge of the present utility model;

[0015] Figure 3 is a schematic diagram of the shock-absorbing connecting member of the present utility model;

[0016] Figure 4 is a cross-sectional view of the shock-absorbing connecting member of the present utility model;

[0017] Figure 5 is a schematic diagram of the spring damper of the present utility model.

[0018] The marks in the attached drawings are: 1, annular buckle; 2, shock-absorbing connecting member; 3, bottom plate; 4, connecting plate; 5, spring assembly; 6, buffer chain; 7, spring damper; 8, reinforcing rib; 9, rotating connecting plate; 10, rotating shaft; 11, pressing sleeve; 12, spring rod; 13, first spring; 14, limiting member; 15, second spring; 16, protrusion; 17, limiting rod; 18, third spring; 19, housing; 20, first connecting head; 21, second connecting head; 22, compression rod; 23, fourth spring; 24, first horseshoe buckle; 25, second horseshoe buckle. Specific embodiments

[0019] The present utility model will be further described below in conjunction with the attached drawings and embodiments, but it is not used as a basis for limiting the present utility model.

[0020] Embodiment: An ancient bridge shock-absorbing connection device is configured as shown in Figures 1-5 and is used for shock-absorbing connection between a bridge and a pier. It includes a shock-absorbing connecting member 2, and the shock-absorbing connecting member 2 is respectively fixed at the lower end of the bridge and on the side of the pier. The shock-absorbing connecting member 2 includes a bottom plate 3 and a connecting plate 4. A spring assembly 5 is provided between the bottom plate 3 and the connecting plate 4. Through the combination of the bottom plate 3 and the connecting plate 4, the stability of the connection is ensured. A spring damper 7 is provided on the shock-absorbing connecting member 2 fixed on the side of the pier. The spring damper 7 is connected with a buffer chain 6, and the other end of the buffer chain 6 is connected with the shock-absorbing connecting member 2 fixed at the lower end of the bridge. A group of reinforcing ribs 8 are provided on the bottom plate 3. The connecting plate 4 is arranged above the bottom plate 3, and a group of rotating connecting plates 9 extend from the connecting plate 4, and a rotating shaft 10 is passed through between the rotating connecting plates 9.

[0021] The spring assembly 5 includes bushings 11 provided at both ends of the connecting plate 4. At both ends of the bottom plate 3, there are spring rods 12 inserted into the bushings 11 and slidably engaged with the bushings 11. A first spring 13 is sleeved on the spring rods 12, and both ends of the first spring 13 are respectively connected to the bushing 11 and the bottom plate 3. A plurality of limit members 14 are slidably inserted through the connecting plate 4. At the top of the limit member 14, there is a protrusion 16 located above the connecting plate 4, and the protrusion 16 is used to limit the connecting plate 4. The bottom of the limit member 14 is fixed to the reinforcing rib 8, and a second spring 15 is sleeved on the limit member 14 and located between the reinforcing rib 8 and the connecting plate 4. The spring assembly 5 further includes a limit rod 17 slidably inserted through the middle of the connecting plate 4, and the lower end of the limit rod 17 is fixed to the bottom plate 3; a third spring 18 is sleeved on the limit rod 17 and located between the bottom plate 3 and the connecting plate 4. The bushing 11, the spring rod 12, and the sleeved first spring 13 of the spring assembly 5 can effectively relieve the impact of seismic forces. The cooperation of the limit member 14 and the second spring 15 further stabilizes the connecting member and prevents excessive displacement. At the same time, through the third spring 18, the stability and shock absorption effect of the structure are further enhanced.

[0022] The spring damper 7 includes a housing 19. At both ends of the housing 19, there are respectively a first connector 20 and a second connector 21. Inside the housing 19, there is a compression rod 22 connecting the first connector 20 and the second connector 21. A fourth spring 23 is sleeved on the compression rod 22, and both ends of the fourth spring 23 are respectively connected to the upper end and the lower end of the compression rod 22.

[0023] The buffer chain 6 includes a first horseshoe buckle 24, several loop buckles 1, and a second horseshoe buckle 25 connected in sequence. The rotating shaft 10 of the shock-absorbing connector 2 fixed to the lower end of the bridge is inserted into the first horseshoe buckle 24, and the shock-absorbing connector 2 fixed to the lower end of the bridge is hinged to the first horseshoe buckle 24; the second connector 21 is hinged to the second horseshoe buckle 25. The rotating shaft 10 of the shock-absorbing connector 2 fixed to the side of the bridge pier is inserted into the first connector 20, and the shock-absorbing connector 2 fixed to the side of the bridge pier is hinged to the first connector 20. One function of the buffer chain 6 is to limit the minimum width of the bearing surface at the bearing link part; the other is the rigid body displacement constraint measure between the bridge and the bridge pier. The buffer chain 6 is one of the important components in bridge and construction engineering. Its function is to buffer the seismic forces received by the beam body during a strong earthquake and ensure that the bridge does not slide out of the bridge pier after a strong earthquake.

[0024] Through the combination of the spring assembly 5, the buffer chain 6 and the spring damper 7, this device can effectively absorb and disperse seismic forces, significantly improving the seismic performance of bridges. This device is applicable to various types of bridges, especially for the reinforcement of ancient bridges, and can adapt to different construction conditions and environmental requirements. In addition, this device adopts the combination of the bottom plate 3, the connecting plate 4, the rotating connecting plate 9, etc., which simplifies the connection structure, reduces the production cost, and facilitates installation and maintenance. By using the limiting member 14 and the limiting rod 17 in cooperation with the first spring 13, the second spring 15, and the third spring 18, the stability and reliability of the connection are enhanced, ensuring the stability during long-term operation.

[0025] Working Principle

[0026] In the initial stage of an earthquake, the bridge generates displacement, and the displacement force acts on the shock-absorbing connecting piece 2 fixed at the lower end of the bridge. As the bridge displaces, the buffer chain 6 connected to the shock-absorbing connecting piece 2 begins to be gradually tightened. During the pre-tightening process, the length of the buffer chain 6 is adjusted to ensure that it can be evenly stressed in the subsequent process. The loop buckles in the buffer chain 6 start to be evenly stressed, and the stress is dispersed to the entire buffer chain 6 through the loop buckles, avoiding stress concentration and extending the service life of the buffer chain 6. When the buffer chain 6 is pulled to a certain extent, its tension is transmitted to the spring damper 7 hinged to the shock-absorbing connecting piece 2 fixed on the side of the bridge pier. The compression rod 22 inside the spring damper 7 compresses the fourth spring 23 under the action of the tension. The compression of the fourth spring 23 absorbs part of the seismic energy and at the same time provides a reverse resistance to further relieve the seismic force. The spring assembly 5 inside the shock-absorbing connecting piece 2 fixed on the side of the bridge pier further relieves the impact of the seismic force on the bridge pier through the compression and stretching of the first spring 13. The cooperation between the limiting member 14 and the second spring 15 ensures the stability of the connecting piece and prevents excessive displacement. The third spring 18 between the bottom plate 3 and the connecting plate 4 enhances the stability and shock-absorbing effect of the overall structure through its compression and stretching. Through the synergistic effect of the above multi-stage shock-absorbing structure, the seismic force is effectively dispersed and absorbed, and the connection between the bridge and the bridge pier remains stable, ensuring the safety of the ancient bridge after a strong earthquake.

[0027] In summary, this utility model can effectively absorb the dynamic force generated by an earthquake, improve the seismic performance of the bridge, and at the same time has a simple structure and is convenient for maintenance.

Claims

1. A shock-absorbing connection device for ancient bridges, used for shock-absorbing connection between bridges and bridge piers, characterized in that: It includes a shock-absorbing connecting piece (2), and the shock-absorbing connecting piece (2) is respectively fixed at the lower end of the bridge and on the side of the pier. A spring damper (7) is arranged on the shock-absorbing connecting piece (2) fixed on the side of the pier. The spring damper (7) is connected with a buffer chain (6), and the other end of the buffer chain (6) is connected with the shock-absorbing connecting piece (2) fixed at the lower end of the bridge; the shock-absorbing connecting piece (2) includes a bottom plate (3) and a connecting plate (4), the connecting plate (4) is arranged above the bottom plate (3), and a spring assembly (5) is arranged between the bottom plate (3) and the connecting plate (4).

2. The ancient bridge shock-absorbing connection device according to claim 1, characterized in that: A group of reinforcing ribs (8) are arranged on the bottom plate (3); a group of rotating connecting plates (9) extend from the connecting plate (4), and a rotating shaft (10) is arranged through the rotating connecting plates (9).

3. The ancient bridge shock absorption connection device according to claim 2, characterized in that: The spring assembly (5) includes compression sleeves (11) arranged at both ends of the connecting plate (4). Spring rods (12) are arranged at both ends of the bottom plate (3) and are arranged in the compression sleeves (11) and are in sliding fit with the compression sleeves (11). A first spring (13) is sleeved on the spring rods (12), and both ends of the first spring (13) are respectively connected with the compression sleeve (11) and the bottom plate (3); the spring assembly (5) further includes a limiting rod (17) slidably penetrating through the middle of the connecting plate (4), and the lower end of the limiting rod (17) is fixed to the bottom plate (3); a third spring (18) is sleeved on the limiting rod (17) and is located between the bottom plate (3) and the connecting plate (4).

4. The ancient bridge shock-absorbing connection device according to claim 2, wherein: A plurality of limiting members (14) are slidably penetrated through the connecting plate (4). A protrusion (16) located above the connecting plate (4) is arranged at the top of the limiting member (14), and the bottom of the limiting member (14) is fixed to the reinforcing rib (8); a second spring (15) is sleeved on the limiting member (14) and is located between the reinforcing rib (8) and the connecting plate (4).

5. The ancient bridge shock-absorbing connection device according to claim 1, characterized in that: The spring damper (7) includes a housing (19), a first connecting head (20) and a second connecting head (21) are respectively arranged at both ends of the housing (19). A compression rod (22) connecting the first connecting head (20) and the second connecting head (21) is arranged in the housing (19). A fourth spring (23) is sleeved on the compression rod (22), and both ends of the fourth spring (23) are respectively connected with the upper end and the lower end of the compression rod (22).

6. The ancient bridge shock-absorbing connection device according to claim 5, wherein: The buffer chain (6) includes a first horseshoe buckle (24), a plurality of annular buckles (1) and a second horseshoe buckle (25) connected in sequence; the rotating shaft (10) of the shock-absorbing connecting piece (2) fixed at the lower end of the bridge is arranged in the first horseshoe buckle (24), and the shock-absorbing connecting piece (2) fixed at the lower end of the bridge is hinged with the first horseshoe buckle (24); the second connecting head (21) is hinged with the second horseshoe buckle (25).

7. The ancient bridge shock-absorbing connection device according to claim 6, characterized in that: The rotating shaft (10) of the shock-absorbing connecting piece (2) fixed on the side of the pier is arranged in the first connecting head (20), and the shock-absorbing connecting piece (2) fixed on the side of the pier is hinged with the first connecting head (20).

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