Friction pendulum shock insulation support
By introducing a limiting ring and high-strength bolt connection into the friction pendulum seismic isolation bearing, the problem of difficult replacement of shear pins was solved, achieving the effect of rapid repair and reduced repair costs.
Patent Information
- Application Number
- CN202423065127.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The shear pins of existing friction pendulum supports are difficult to replace quickly after they break, which affects repair time and increases repair costs.
A friction pendulum vibration isolation bearing was designed, which uses a limiting ring and high-strength bolts to connect shear pins. If the shear pin breaks, it can be easily removed and replaced by unscrewing the limiting bolts, simplifying the replacement process.
It enables rapid replacement of shear pins, shortens repair time, reduces repair costs, and prevents excessive beam displacement to avoid beam collapse.
Smart Images
Figure CN223576930U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of shock isolation, and particularly relates to a friction pendulum shock isolation bearing. BACKGROUND
[0002] Traditional seismic design of buildings such as bridges mainly relies on the strength and deformation of the building structure itself, which usually causes a large amount of seismic energy to be transmitted from the ground to the building itself, and the design is difficult and poor in economy. In recent years, in order to improve the structure and seismic performance, a large number of shock absorption bearings are used at home and abroad to prolong the natural vibration period of the structure and reduce the seismic energy transmitted to the upper structure, thereby playing a role of shock isolation and energy dissipation. The friction pendulum bearing is widely used in engineering due to its low sensitivity to seismic frequency range, durability and stability, and strong self-resetting capability. However, the shear pin of the existing friction pendulum bearing is in interference fit with the upper bearing plate, and after the shear pin is fractured by shear force, the remaining part is often stuck in the pin hole at the bottom of the upper bearing plate and is difficult to remove, which affects the repair time of the friction pendulum bearing and increases the repair cost. CONTENT OF THE UTILITY MODEL
[0003] In order to make up for the deficiency of the prior art, the utility model provides a friction pendulum shock isolation bearing, which can be quickly replaced after the shear pin is fractured by shear force, thereby shortening the repair time and reducing the repair cost.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A friction pendulum shock isolation bearing, characterized in that: comprising an upper bearing plate and a lower bearing plate, a spherical crown lining plate is arranged between the upper bearing plate and the lower bearing plate;
[0006] An upper spherical surface sliding plate is arranged between the spherical crown lining plate and the upper bearing plate;
[0007] A lower spherical surface sliding plate is arranged between the spherical crown lining plate and the lower bearing plate;
[0008] A limiting device is arranged on the upper bearing plate, and the limiting device comprises a limiting ring, a limiting bolt and a shear pin, the limiting ring is arranged on the inner side of the upper bearing plate, and the limiting ring and the upper bearing plate are fixedly connected through the horizontal limiting bolt;
[0009] A vertical semicircular hole is arranged on the inner side of the upper bearing plate, and a vertical semicircular hole is arranged on the outer side of the limiting ring, the semicircular hole on the upper bearing plate and the semicircular hole on the limiting ring form a circular hole, and the shear pin is arranged in the circular hole;
[0010] The upper bearing plate is connected with a bridge body through an anchoring sleeve, and the lower bearing plate is connected with a pier through an anchoring sleeve.
[0011] Further, the upper spherical surface sliding plate is arranged in the groove of the spherical crown lining plate.
[0012] Further, the lower spherical sliding plate is embedded in the groove of the lower support plate.
[0013] Further, the upper anchoring sleeve is fixedly connected with the upper support plate through anchoring bolts, and the upper anchoring sleeve is embedded and fixed with the bridge body.
[0014] Further, the lower anchoring sleeve is fixedly connected with the lower support plate through anchoring bolts, and the lower anchoring sleeve is embedded in the pier.
[0015] Further, the limiting bolt is a high-strength bolt.
[0016] The utility model discloses the beneficial effect:
[0017] 1) the utility model discloses shear pin respectively embeds the limiting ring and the upper support plate, and the limiting ring and the upper support plate are separated through the twist of limiting bolt, and the remainder of shear pin fracture is easily taken out, and the new shear pin is replaced, and the time of post-earthquake repair of friction pendulum bearing is improved.
[0018] 2) the limiting structure of the utility model, simple structure can prevent the beam body from generating too big displacement, prevents the occurrence of beam. DRAWINGS
[0019] Figure 1 It is the front view of the utility model embodiment;
[0020] Figure 2 It is the top view of the utility model embodiment;
[0021] 1-upper support plate;2-upper spherical sliding plate;3-crown lining plate;4-lower spherical sliding plate;5-lower support plate;6-limiting bolt;7-shear pin;8-limiting ring;9-anchoring sleeve. SPECIFIC EMBODIMENT
[0022] The utility model will be explained in detail in connection with specific embodiment.
[0023] As Figure 1 , 2 The utility model discloses upper support plate 1 and lower support plate 5, and the crown lining plate 3 is arranged between upper support plate 1 and lower support plate 5.
[0024] A spherical cap lining plate 3 is provided with an upper spherical surface sliding plate 2 between the upper spherical cap lining plate 3 and the upper support plate 1; the spherical cap lining plate 3 is provided with a lower spherical surface sliding plate 4 between the lower spherical cap lining plate 3 and the lower support plate 5; the upper spherical surface sliding plate 2 is arranged in the groove of the spherical cap lining plate 3, and the upper spherical surface sliding plate 2 is in direct contact with the upper support plate 1 and slides relative to the upper support plate 1 when the bridge body is displaced; the lower spherical surface sliding plate 4 is embedded in the groove of the lower support plate 5, and the lower spherical surface sliding plate 4 is in direct contact with the lower end of the spherical cap lining plate 3 and slides relative to the spherical cap lining plate 3 when the bridge body is displaced. The upper spherical surface sliding plate 2 and the lower spherical surface sliding plate 4 are both made of polytetrafluoroethylene sliding surface plates.
[0025] A limiting device is arranged on the upper support plate 1, and the limiting device comprises a limiting ring 8, a limiting bolt 6 and a shear pin 7; the limiting ring 8 is arranged on the inner side of the upper support plate 1, and the limiting ring 8 and the upper support plate 1 are fixedly connected through the horizontal limiting bolt 6; the inner side of the upper support plate 1 is provided with a vertical semicircular hole, and the outer side of the limiting ring 8 is provided with a vertical semicircular hole; the semicircular hole on the upper support plate 1 and the semicircular hole on the limiting ring 8 form a circular hole, and the shear pin 7 is arranged in the circular hole; the limiting bolt 6 is a high-strength bolt.
[0026] The upper support plate 1 is connected with the bridge body through an anchoring sleeve 9, and the lower support plate 5 is connected with the pier through the anchoring sleeve 9. The upper anchoring sleeve 9 is fixedly connected with the upper support plate 1 through an anchoring bolt, and the upper anchoring sleeve 9 is embeddedly fixed with the bridge body. The lower anchoring sleeve 9 is fixedly connected with the lower support plate 5 through an anchoring bolt, and the lower anchoring sleeve 9 is embedded in the pier.
[0027] The working principle of the utility model is as follows:
[0028] The upper support plate is connected with the beam body, and the lower support plate is connected with the pier; when an earthquake occurs, the support transmits horizontal seismic force. When the horizontal seismic force borne by the support is greater than the horizontal shear force that can be resisted by the shear pin of the support, the shear pin is sheared, and the upper support plate and the lower support plate of the friction pendulum support are relatively moved, and the energy is consumed through the friction force of the upper spherical surface sliding plate and the lower spherical surface sliding plate. When the relative displacement is too large, the limiting ring limits the relative displacement of the friction pendulum support, so that the beam does not fall. After the earthquake, the shear pin is broken, the limiting ring and the upper support plate can be separated by unscrewing the limiting bolt, the remaining part of the broken shear pin is easily taken out, and a new shear pin is replaced, so that the time for repairing the friction pendulum support after the earthquake is shortened, and the traffic is quickly restored, so that the rescue team quickly arrives at the disaster area, and the rescue work is guaranteed.
[0029] In the description of the utility model, unless another definite provision and limitation, the term "arrangement", "installation", "connection", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element internal communication or two element's mutual action relation. For ordinary skilled person in the art, the above-mentioned terms can be understood in the specific meaning in the utility model according to the specific circumstances.
[0030] The content of the utility model is not limited to the enumeration of the embodiments, and any equivalent transformation of the technical scheme of the utility model adopted by the person skilled in the art by reading the utility model specification is covered by the claims of the utility model.
Claims
1. A friction pendulum vibration isolation bearing, characterized in that: It includes an upper support plate (1) and a lower support plate (5), and a spherical crown liner (3) is provided between the upper support plate (1) and the lower support plate (5); An upper spherical sliding plate (2) is provided between the spherical crown liner (3) and the upper support plate (1); A lower spherical sliding plate (4) is provided between the spherical crown liner (3) and the lower support plate (5); The upper support plate (1) is provided with a limiting device, which includes a limiting ring (8), a limiting bolt (6), and a shear pin (7). The limiting ring (8) is located inside the upper support plate (1), and the limiting ring (8) and the upper support plate (1) are fixedly connected by a horizontal limiting bolt (6). A vertical semi-circular hole is provided on the inner side of the upper support plate (1), and a vertical semi-circular hole is provided on the outer side of the limiting ring (8). The semi-circular hole on the upper support plate (1) and the semi-circular hole on the limiting ring (8) form a circular hole, and the shear pin (7) is set in the circular hole. The upper support plate (1) is connected to the bridge body through the anchor sleeve (9), and the lower support plate (5) is connected to the pier through the anchor sleeve (9).
2. The friction pendulum vibration isolation bearing according to claim 1, characterized in that: The upper spherical sliding plate (2) is set in the groove of the spherical crown liner (3).
3. A friction pendulum vibration isolation bearing according to claim 2, characterized in that: The lower spherical slide plate (4) is embedded in the groove of the lower support plate (5).
4. A friction pendulum vibration isolation bearing according to claim 3, characterized in that: The upper anchor sleeve (9) is fixedly connected to the upper support plate (1) by anchor bolts, and the upper anchor sleeve (9) is then fitted and fixed to the bridge body.
5. A friction pendulum vibration isolation bearing according to claim 4, characterized in that: The lower anchor sleeve (9) is fixedly connected to the lower support plate (5) by anchor bolts, and the lower anchor sleeve (9) is then embedded into the pier for fixation.
6. A friction pendulum vibration isolation bearing according to claim 5, characterized in that: The limiting bolt (6) is a high-strength bolt.