Multi-damping friction pendulum support
By introducing multiple damping designs into the friction pendulum bearing, and using damping blocks and sliding wear-resistant components to buffer vibrations, the problem of friction pendulum bearings being prone to shearing under large earthquakes has been solved, achieving multiple damping and anti-overturning effects of the bearing and extending the service life of the bridge.
Patent Information
- Application Number
- CN202520474514.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-18
AI Technical Summary
The existing friction pendulum bearing has a simple energy dissipation mechanism and is prone to shearing under the action of a large earthquake, which may lead to excessive relative displacement between the upper and lower bearing plates, potentially causing the bearing to overturn and the bridge to collapse.
The multi-dampening friction pendulum bearing design includes a first damping block, anti-vibration pin, sliding wear-resistant components, and wear-resistant plates. It uses flexible connections and friction energy dissipation mechanisms to buffer and reduce vibration impacts, thereby enhancing the bearing's seismic resistance.
It improves the service life of the bearings, reduces the impact force during earthquakes, avoids excessive displacement and overturning of the bearings, and extends the service life of the bridge.
Smart Images
Figure CN223936989U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bridge bearing technology, specifically to a multi-vibration damping friction pendulum bearing. Background Technology
[0002] Friction pendulum bearings are commonly used in bridge construction to isolate the bridge superstructure from the piers and abutments. They utilize the damping and friction effects of the bearings to dissipate energy, thereby reducing earthquake damage and extending the bridge's service life. However, existing friction pendulum bearings have a simplistic energy dissipation mechanism. Under strong earthquakes, the seismic pins may shear off instantaneously, causing excessive relative displacement between the upper and lower bearing plates. This can easily lead to bearing overturning and potentially bridge collapse.
[0003] Therefore, the existing friction pendulum support needs to be improved. Utility Model Content
[0004] In view of this, this application provides a multi-damping friction pendulum bearing to solve the technical problem that the existing friction pendulum bearing has a single energy dissipation mechanism, and the seismic pins are instantly sheared under the action of a large earthquake, resulting in excessive relative displacement between the upper and lower bearing plates, which can easily cause the bearing to overturn and potentially lead to the collapse of the bridge.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A multi-damping friction pendulum support, comprising:
[0007] lower seat panel;
[0008] An upper seat plate, which is located above the lower seat plate;
[0009] A pair of damping components are connected between the lower seat plate and the upper seat plate. The damping components include a first damping block and an anti-vibration pin. The first damping block is connected to the edges of the lower seat plate and the upper seat plate, and the anti-vibration pin is connected between the lower seat plate, the upper seat plate and the first damping block.
[0010] A sliding wear-resistant component is connected between the lower seat plate and the upper seat plate.
[0011] Furthermore, the sliding wear-resistant component includes:
[0012] A first convex sliding block is connected to the upper seat plate;
[0013] The second convex sliding block is connected to the lower seat plate;
[0014] A concave sliding block is slidably connected between a first convex sliding block and a second convex sliding block.
[0015] Furthermore, the sliding wear-resistant assembly also includes a pair of second damping blocks and a pair of third damping blocks, the pair of second damping blocks being connected to both ends of the upper seat plate, and the pair of third damping blocks being connected to both ends of the lower seat plate.
[0016] Furthermore, a first wear-resistant plate is connected between the upper seat plate and the first convex sliding block.
[0017] Furthermore, a second wear-resistant plate is connected between the lower seat plate and the second convex sliding block.
[0018] Furthermore, a third wear-resistant plate is connected between the first convex sliding block and the concave sliding block.
[0019] Furthermore, a third wear-resistant plate is connected between the second convex sliding block and the concave sliding block.
[0020] As can be seen from the above technical solution, the advantages of this utility model are:
[0021] 1. In this application, the edges of the upper seat plate and the lower seat plate are connected by a first damping block and an anti-vibration pin. The first damping block and the anti-vibration pin work together to reduce vibration at the edges of the upper seat plate and the lower seat plate, thereby improving the service life of the edges of the upper seat plate and the lower seat plate.
[0022] 2. In this application, a first convex sliding block and a second convex sliding block are provided between the upper seat plate and the lower seat plate, and a concave sliding block is provided between the first convex sliding block and the second convex sliding block. When vibration and compression occur, the first convex sliding block and the second convex sliding block can slide relative to the concave sliding block, thereby consuming energy through friction and achieving the overall shock absorption effect.
[0023] 3. By setting a second damping block and a third damping block on both sides of the first and second convex sliding blocks, the impact and compression of the first and second convex sliding blocks on the upper and lower seat plates during vibration can be reduced, thereby reducing the degree of damage to the upper and lower seat plates, resulting in good shock absorption and long service life.
[0024] 4. In this application, a first wear-resistant plate is provided between the first convex sliding block and the upper seat plate, and a second wear-resistant plate is provided between the second convex sliding block and the lower seat plate. By providing the first wear-resistant plate and the second wear-resistant plate, the wear of the first convex sliding block, the second convex sliding block and the concave sliding block can be reduced, thereby extending the service life. Attached Figure Description
[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0026] Figure 1 This is a schematic diagram of the structure of this application.
[0027] Explanation of reference numerals in the attached drawings: 1-lower seat plate; 2-upper seat plate; 31-first wear-resistant plate; 32-second wear-resistant plate; 33-third wear-resistant plate; 41-first damping block; 42-second damping block; 43-third damping block; 5-first convex sliding block; 6-concave sliding block; 7-anti-vibration pin; 8-second convex sliding block. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and their descriptions are used to explain this application, but are not intended to limit it.
[0029] refer to Figure 1 ,like Figure 1 As shown, this embodiment provides a multi-vibration damping friction pendulum bearing, including: a lower bearing plate 1, an upper bearing plate 2, a pair of damping components, and a sliding wear-resistant component. The upper bearing plate 2 is connected to the superstructure of the bridge, the lower bearing plate 1 is connected to the pier, and the upper bearing plate 2 is located above the lower bearing plate 1, with a gap between them. The pair of damping components are connected between the edges of the lower bearing plate 1 and the upper bearing plate 2. The sliding wear-resistant component is connected in the middle of the lower bearing plate 1 and the upper bearing plate 2, so the pair of damping components are located on both sides of the sliding wear-resistant component.
[0030] Specifically, the damping assembly includes a first damping block 41 and a seismic pin 7. The first damping block 41 is connected between the end edges of the lower seat plate 1 and the upper seat plate 2, and the seismic pin 7 is connected between the lower seat plate 1, the upper seat plate 2, and the first damping block 41. Compared to the prior art where pins are directly placed at the edges of the upper seat plate 2 and the lower seat plate 1, this application adds the structure of the first damping block 41, making the connection between the upper seat plate 2 and the lower seat plate 1 flexible. Even if bridge vibrations cause the upper seat plate 2 and the lower seat plate 1 to collide, the first damping block 41 can provide elastic force for buffering, thereby reducing the impact force generated by the collision and improving service life. Furthermore, the upper and lower ends of the seismic pin 7 are connected to the upper seat plate 2 and the lower seat plate 1 respectively, with the first damping block 41 in the middle, which reduces the risk of the seismic pin 7 breaking during a major earthquake. Therefore, the first damping block 41 and the seismic pin 7 work together to provide damping.
[0031] In one embodiment, the sliding wear-resistant component includes: a first convex sliding block 5, a second convex sliding block 8, and a concave sliding block 6. The first convex sliding block 5 is connected to the lower end of the upper seat plate 2; the second convex sliding block 8 is connected to the upper end of the lower seat plate 1. The first convex sliding block 5 and the second convex sliding block 8 have the same structure and are symmetrically distributed vertically; the concave sliding block 6 is slidably disposed between the first convex sliding block 5 and the second convex sliding block 8.
[0032] Preferably, the sliding wear-resistant component further includes a pair of second damping blocks 42 and a pair of third damping blocks 43, the pair of second damping blocks 42 being connected relative to each other between the upper seat plate 2 and the first convex sliding block 5, and the pair of third damping blocks 43 being connected relative to each other between the lower seat plate 1 and the second convex sliding block 8.
[0033] Preferably, the concave sliding block 6 has arc-shaped cavities on both its upper and lower sides, and the first convex sliding block 5 and the second convex sliding block 8 have arc-shaped convex surfaces on their respective sides. This allows the convex surfaces to slide and engage with the corresponding arc-shaped cavities. Therefore, when the first convex sliding block 5 and the second convex sliding block 8 are subjected to an inclined compressive force by seismic waves, the first convex sliding block 5 and the second convex sliding block 8 will slide relative to the concave sliding block 6. The friction generated by the sliding will weaken the inclined compressive force, thereby achieving the effect of energy dissipation and shock absorption. Therefore, the sliding of the first convex sliding block 5, the second convex sliding block 8, and the concave sliding block 6 results in a good and stable connection between the three.
[0034] Furthermore, when the tilting compression is significant, the first convex sliding block 5 and the second convex sliding block 8 will move to the sides. The elastic force generated by the second damping block 42 and the third damping block 43 under compression can buffer this compression impact, thereby reducing the impact between the upper seat plate 2 and the first convex sliding block 5, and between the lower seat plate 1 and the second convex sliding block 8, thus achieving energy dissipation and vibration reduction again. Therefore, the mutual restraint between the first convex sliding block 5 and the second damping block 42, and between the second convex sliding block 8 and the third damping block 43, can prevent the entire support from undergoing excessive displacement and overturning.
[0035] Preferably, the first damping block 41, the second damping block 42, and the third damping block 43 are rubber damping blocks or spring damping blocks.
[0036] In one embodiment, a first wear-resistant plate 31 is connected between the upper seat plate 2 and the first convex sliding block 5, and the first wear-resistant plate 31 can increase the wear resistance between the upper seat plate 2 and the first convex sliding block 5; a second wear-resistant plate 32 is connected between the lower seat plate 1 and the second convex sliding block 8, and the second wear-resistant plate 32 can increase the wear resistance between the lower seat plate 1 and the second convex sliding block 8; a third wear-resistant plate 33 is connected between the first convex sliding block 5 and the second convex sliding block 8 and the concave sliding block 6, and a pair of third wear-resistant plates 33 can increase the wear resistance between the first convex sliding block 5 and the concave sliding block 6 and between the second convex sliding block 8 and the concave sliding block 6. Therefore, during an earthquake, the friction between the upper seat plate 2 and the first convex sliding block 5 provides energy dissipation to mitigate the impact, the friction between the lower seat plate 1 and the second convex sliding block 8 provides energy dissipation to mitigate the impact, and the sliding of the first convex sliding block 5 and the second convex sliding block 8 will rub against the concave sliding block 6 to provide energy dissipation to mitigate the impact. In this way, the impact between the upper seat plate 2 and the lower seat plate 1 is greatly reduced, that is, the impact force between the bridge superstructure and the pier is greatly reduced, thus effectively playing the role of energy dissipation and shock reduction.
[0037] Preferably, the first wear-resistant plate 31, the second wear-resistant plate 32, and the third wear-resistant plate 33 are cylindrical curved alloy steel plates, which have the characteristics of wear resistance and high rigidity, and are therefore very strong and durable.
[0038] In summary, this application, by incorporating two energy-dissipating structures—a damping component and a sliding wear-resistant component—provides a powerful, tiered damping effect for the entire support. Furthermore, the internal constraints and friction within the sliding wear-resistant component provide damping energy dissipation, preventing excessive displacement and overturning of the support. Therefore, this application offers the advantages of multiple damping and anti-overturning features.
[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to the embodiments of this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A multi-vibration damping friction pendulum support, characterized in that, include: Lower seat plate (1); Upper seat plate (2), which is located above the lower seat plate (1); A pair of damping components are connected between the lower seat plate (1) and the upper seat plate (2). The damping components include a first damping block (41) and an anti-vibration pin (7). The first damping block (41) is connected to the edges of the lower seat plate (1) and the upper seat plate (2). The anti-vibration pin (7) is connected between the lower seat plate (1), the upper seat plate (2) and the first damping block (41). A sliding wear-resistant component is connected between the lower seat plate (1) and the upper seat plate (2).
2. The multi-damping friction pendulum support according to claim 1, characterized in that, The sliding wear-resistant component includes: The first convex sliding block (5) is connected to the upper seat plate (2); The second convex sliding block (8) is connected to the lower seat plate (1); A concave sliding block (6) is slidably connected between a first convex sliding block (5) and a second convex sliding block (8).
3. The multi-damping friction pendulum support according to claim 2, characterized in that, The sliding wear-resistant assembly also includes a pair of second damping blocks (42) and a pair of third damping blocks (43). The pair of second damping blocks (42) are connected to the two ends of the upper seat plate (2), and the pair of third damping blocks (43) are connected to the two ends of the lower seat plate (1).
4. The multi-damping friction pendulum support according to claim 3, characterized in that, A first wear-resistant plate (31) is connected between the upper seat plate (2) and the first convex sliding block (5).
5. The multi-damping friction pendulum support according to claim 4, characterized in that, A second wear-resistant plate (32) is connected between the lower seat plate (1) and the second convex sliding block (8).
6. The multi-damping friction pendulum support according to claim 5, characterized in that, A third wear-resistant plate (33) is connected between the first convex sliding block (5) and the concave sliding block (6).
7. The multi-damping friction pendulum support according to claim 6, characterized in that, A third wear-resistant plate (33) is connected between the second convex sliding block (8) and the concave sliding block (6).