Multi-stage shock insulation and wind resistance support
Through the design of multi-stage seismic isolation and wind-resistant bearings, the problems of large size and constant friction coefficient of existing elastic sliding plate bearings are solved, staged sliding is achieved, the seismic isolation effect and wind resistance performance are improved, and the building space occupancy and construction costs are reduced.
Patent Information
- Application Number
- CN202422818971.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The existing elastic slide plate bearings are large in size, and the constant friction coefficient results in uneven seismic isolation effects, making it difficult to balance the seismic isolation effects during small and medium earthquakes and large earthquakes, and is not conducive to the use of building space.
A multi-stage seismic isolation and wind-resistant bearing is designed. By setting sliding friction pairs and wind-resistant components with gradually increasing friction coefficients, staged sliding is achieved to adapt to different earthquake intensities, and the sliding range is controlled in combination with limit rings.
While reducing the size of the bearings, it improves the seismic isolation effect during small, medium and large earthquakes, controls structural displacement, reduces the amount of reinforced concrete, and has good wind resistance.
Smart Images
Figure CN223386783U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building seismic isolation, and more particularly to a multi-stage seismic isolation and wind-resistant bearing. Background Art
[0002] In recent years, isolation bearings have been commonly installed within building structures to improve their seismic performance. Elastic slide bearings are a common type of isolation bearing. However, existing elastic slide bearings are large, making them unsuitable for building space utilization. Furthermore, their sliding surface friction coefficient is often constant, resulting in significant variations in isolation effectiveness for earthquakes of varying magnitudes. This fails to provide both effective isolation during small and medium earthquakes and effective displacement control during large earthquakes. Utility Model Content
[0003] In view of this, the present invention provides a multi-stage seismic isolation and wind-resistant bearing, the purpose of which is to solve the problems existing in the prior art.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0005] A multi-stage seismic isolation and wind-resistant bearing comprises: a lower bearing plate, a sliding body, an upper bearing plate and a top plate arranged in sequence from bottom to top; a first sliding friction pair is provided between the lower bearing plate and the sliding body; a second sliding friction pair is provided between the sliding body and the upper bearing plate; a third sliding friction pair is provided between the upper bearing plate and the top plate; the friction coefficient of the first sliding friction pair is smaller than the friction coefficient of the second sliding friction pair; the friction coefficient of the second sliding friction pair is smaller than the friction coefficient of the third sliding friction pair; a first limiting ring is provided on the upper surface of the lower bearing plate; and a second limiting ring is provided on the lower surface of the upper bearing plate.
[0006] Preferably, the first sliding friction pair includes a first friction plate and a first stainless steel plate; the first friction plate is embedded in the lower surface of the sliding body; the first stainless steel plate is fixedly connected to the upper surface of the lower support plate; the first stainless steel plate is arranged in the first limiting ring; the lower surface of the first friction plate abuts against the upper surface of the first stainless steel plate.
[0007] Preferably, the second sliding friction pair includes a second friction plate and a second stainless steel plate; the second friction plate is embedded in the upper surface of the sliding body; the second stainless steel plate is fixedly connected to the lower surface of the upper support plate; the second stainless steel plate is arranged in the second limiting ring; the upper surface of the second friction plate abuts against the lower surface of the second stainless steel plate.
[0008] Preferably, the third sliding friction pair includes a third friction plate and a third stainless steel plate; the third friction plate is embedded in the upper surface of the upper support plate; the third stainless steel plate is fixedly connected to the lower surface of the top plate; the upper surface of the third friction plate abuts against the lower surface of the third stainless steel plate.
[0009] Preferably, a plurality of wind-resistant components are distributed between the top plate and the lower support plate.
[0010] Preferably, the wind-resistant assembly includes an upper fixing seat, a shear pin and a lower fixing seat; the upper fixing seat is fixedly connected to the lower surface of the top plate; the lower fixing seat is fixedly connected to the upper surface of the lower support plate; the upper fixing seat and the lower fixing seat are connected by the shear pin.
[0011] Compared with the prior art, the utility model has achieved the following technical effects:
[0012] 1) The utility model can achieve staged sliding by providing three sliding friction pairs with gradually increasing friction coefficients, so that the bearing can exhibit different performances when subjected to earthquakes of different intensities, thereby improving the seismic isolation effect of the bearing;
[0013] 2) The present invention can achieve the unification of the isolation effect for small and medium earthquakes and the displacement control effect of the isolation layer for large earthquakes while reducing the size of the bearing;
[0014] 3) The utility model can not only improve the isolation effect of small and medium earthquakes, but also avoid the problem of excessive displacement of the structure during large earthquakes;
[0015] 4) When the support of the present invention is subjected to wind load, the wind-resistant component can play a certain role in resisting the load;
[0016] 5) The overall size of the support of the present invention is small, which greatly reduces the amount of reinforced concrete connected to the support and has good economy. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a structural diagram of a multi-stage seismic isolation and wind-resistant bearing of the utility model;
[0018] Figure 2 for Figure 1 A partial enlarged view of part A;
[0019] Figure 3 for Figure 1 A partial enlarged view of part B;
[0020] Figure 4 This is a sliding diagram of a multi-stage seismic isolation and wind-resistant bearing of the utility model;
[0021] In the figure: 1. Lower support plate; 11. First limiting ring; 2. Sliding body; 3. Upper support plate; 31. Second limiting ring; 4. Top plate; 5. First sliding friction pair; 51. First friction plate; 52. First stainless steel plate; 6. Second sliding friction pair; 61. Second friction plate; 62. Second stainless steel plate; 7. Third sliding friction pair; 71. Third friction plate; 72. Third stainless steel plate; 8. Wind-resistant assembly; 81. Upper fixed seat; 82. Shear pin; 83. Lower fixed seat. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] Example
[0024] Reference Figure 1-4As shown, the utility model discloses a multi-stage seismic isolation and wind-resistant bearing, comprising: a lower bearing plate 1, a sliding body 2, an upper bearing plate 3 and a top plate 4 arranged in sequence from bottom to top; a first sliding friction pair 5 is provided between the lower bearing plate 1 and the sliding body 2; a second sliding friction pair 6 is provided between the sliding body 2 and the upper bearing plate 3; a third sliding friction pair 7 is provided between the upper bearing plate 3 and the top plate 4; the friction coefficient of the first sliding friction pair 5 is less than the friction coefficient of the second sliding friction pair 6; the friction coefficient of the second sliding friction pair 6 is less than the friction coefficient of the third sliding friction pair 7; the upper surface of the lower bearing plate 1 is provided with a first limiting ring 11 for limiting the movement range of the first sliding friction pair 5; the lower surface of the upper bearing plate 3 is provided with a second limiting ring 31 for limiting the movement range of the second sliding friction pair 6; when in use, the top plate 4 is fixedly connected to the upper building structure, and the lower bearing plate 1 is fixedly connected to the lower building structure. When an earthquake occurs, the first sliding friction pair 5 reaches the maximum static friction force and yields, and then begins to slide to consume energy. If the magnitude of the earthquake is low, the multi-stage seismic isolation and wind-resistant bearing only needs to use the sliding friction of the first sliding friction pair 5 to perform seismic isolation and energy consumption. If the magnitude of the earthquake is slightly higher, the first sliding friction pair 5 moves to the limit, the sliding body 2 contacts and is subjected to force with the first limiting ring 11, and then the second sliding friction pair 6 starts to slide and works together with the first sliding friction pair 5 to perform sliding energy consumption. If the magnitude of the earthquake is high, the first sliding friction 5 and the second sliding friction pair 6 both move to the limit, the sliding body 2 contacts and is subjected to force with the first limiting ring 11 and the second limiting ring 31, and then the third sliding friction pair 7 starts to slide and works together with the first sliding friction pair 5 and the second sliding friction pair 6 to perform sliding energy consumption. In this process, the multi-stage seismic isolation and wind-resistant bearing works with obvious stages and has a certain recognition ability for earthquake intensity.
[0025] The above technical solution can provide a larger sliding displacement at the same size by setting the first sliding friction pair, the second sliding friction pair and the third sliding friction pair with gradually increasing friction coefficients. Compared with the existing elastic sliding plate bearing, under the same bearing capacity and the same displacement, it can not only greatly reduce the plane area and the overall size, but also improve the overall seismic isolation capacity of the bearing. On the other hand, it can enable the bearing to achieve staged sliding when subjected to earthquake action, and use the sliding friction pair with a smaller friction coefficient to dissipate energy during small and medium earthquakes, and introduce the sliding friction pair with a larger friction coefficient to dissipate energy and control the displacement during large earthquakes, thereby effectively improving the seismic isolation effect.
[0026] In this embodiment, the first sliding friction pair 5 includes a first friction plate 51 and a first stainless steel plate 52; the first friction plate 51 is embedded in the lower surface of the sliding body 2; the first stainless steel plate 52 is fixedly connected to the upper surface of the lower support plate 1; the first stainless steel plate 52 is arranged in the first limiting ring 11; the lower surface of the first friction plate 51 abuts against the upper surface of the first stainless steel plate 52.
[0027] In this embodiment, the second sliding friction pair 6 includes a second friction plate 61 and a second stainless steel plate 62; the second friction plate 61 is embedded in the upper surface of the sliding body 2; the second stainless steel plate 62 is fixedly connected to the lower surface of the upper support plate 3; the second stainless steel plate 62 is arranged in the second limiting ring 31; the upper surface of the second friction plate 61 abuts against the lower surface of the second stainless steel plate 62.
[0028] In this embodiment, the third sliding friction pair 7 includes a third friction plate 71 and a third stainless steel plate 72; the third friction plate 71 is embedded in the upper surface of the upper support plate 3; the third stainless steel plate 72 is fixedly connected to the lower surface of the top plate 4; the upper surface of the third friction plate 71 abuts against the lower surface of the third stainless steel plate 72.
[0029] In this embodiment, a plurality of wind-resistant components 8 are evenly distributed between the top plate 4 and the lower support plate 1 to provide wind resistance for the building.
[0030] In this embodiment, the wind-resistant component 8 includes an upper fixing seat 81, a shear pin 82 and a lower fixing seat 83; the upper fixing seat 81 is fixedly connected to the edge position of the lower surface of the top plate 4; the lower fixing seat 83 is fixedly connected to the edge position of the upper surface of the lower support plate 1; the upper fixing seat 81 and the lower fixing seat 83 are connected by the shear pin 82; when the building encounters low-intensity wind pressure but not earthquake intensity, the wind-resistant component 8 acts alone to help the building resist the load brought by the wind pressure, so that the building has better wind resistance and effectively reduces the construction cost in high wind pressure areas. When the building encounters high-intensity wind pressure or earthquake intensity, the shear pin 82 in the wind-resistant component 8 is sheared due to the force limit, and the sliding friction pair of the support begins to slide.
[0031] In this embodiment, the lower support plate 1 and the first limiting ring 11 are integrally formed.
[0032] In this embodiment, the upper support plate 3 and the second limiting ring 31 are integrally formed.
[0033] Working principle: When the building encounters low-intensity wind pressure but not earthquake intensity, the wind-resistant component 8 plays a role alone, helping the building to resist the load brought by the wind pressure, so that the building has a better wind-resistant effect and effectively reduces the construction cost in high wind pressure areas; when the building encounters high-intensity wind pressure or earthquake intensity, the shear pin 82 in the wind-resistant component 8 is sheared due to the force limit; when an earthquake occurs and the shear pin 82 is stressed, the first sliding friction pair 5 reaches the maximum static friction force and yields, and then begins to slide and consume energy. If the earthquake magnitude is low, this multi-stage seismic isolation and wind-resistant bearing only needs to use the first The sliding friction pair 5 performs seismic isolation and energy consumption by sliding friction. If the magnitude of the earthquake is slightly higher, the first sliding friction pair 5 moves to the limit, the sliding body 2 contacts and is subjected to force with the first limiting ring 11, and the second sliding friction pair 6 starts to slide and works together with the first sliding friction pair 5 to perform sliding energy consumption. If the magnitude of the earthquake is higher, the first sliding friction 5 and the second sliding friction pair 6 both move to the limit, the sliding body 2 contacts and is subjected to force with the first limiting ring 11 and the second limiting ring 31, and the third sliding friction pair 7 starts to slide and works together with the first sliding friction pair 5 and the second sliding friction pair 6 to perform sliding energy consumption.
[0034] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A multi-stage seismic isolation and wind-resistant bearing, characterized in that: include: A lower support plate (1), a sliding body (2), an upper support plate (3) and a top plate (4) are arranged in sequence from bottom to top; a first sliding friction pair (5) is provided between the lower support plate (1) and the sliding body (2); a second sliding friction pair (6) is provided between the sliding body (2) and the upper support plate (3); a third sliding friction pair (7) is provided between the upper support plate (3) and the top plate (4); the friction coefficient of the first sliding friction pair (5) is smaller than the friction coefficient of the second sliding friction pair (6); the friction coefficient of the second sliding friction pair (6) is smaller than the friction coefficient of the third sliding friction pair (7); a first limiting ring (11) is provided on the upper surface of the lower support plate (1); and a second limiting ring (31) is provided on the lower surface of the upper support plate (3).
2. The multi-stage seismic isolation and wind-resistant bearing according to claim 1, characterized in that: The first sliding friction pair (5) includes a first friction plate (51) and a first stainless steel plate (52); the first friction plate (51) is embedded in the lower surface of the sliding body (2); the first stainless steel plate (52) is fixedly connected to the upper surface of the lower support plate (1); the first stainless steel plate (52) is arranged in the first limiting ring (11); the lower surface of the first friction plate (51) abuts against the upper surface of the first stainless steel plate (52).
3. The multi-stage seismic isolation and wind-resistant bearing according to claim 1, characterized in that: The second sliding friction pair (6) includes a second friction plate (61) and a second stainless steel plate (62); the second friction plate (61) is embedded in the upper surface of the sliding body (2); the second stainless steel plate (62) is fixedly connected to the lower surface of the upper support plate (3); the second stainless steel plate (62) is arranged in the second limiting ring (31); the upper surface of the second friction plate (61) abuts against the lower surface of the second stainless steel plate (62).
4. The multi-stage seismic isolation and wind-resistant bearing according to claim 1, characterized in that: The third sliding friction pair (7) comprises a third friction plate (71) and a third stainless steel plate (72); the third friction plate (71) is embedded in the upper surface of the upper support plate (3); the third stainless steel plate (72) is fixedly connected to the lower surface of the top plate (4); the upper surface of the third friction plate (71) abuts against the lower surface of the third stainless steel plate (72).
5. The multi-stage seismic isolation and wind-resistant bearing according to claim 1, characterized in that: A plurality of wind-resistant components (8) are evenly distributed between the top plate (4) and the lower support plate (1).
6. The multi-stage seismic isolation and wind-resistant bearing according to claim 5, characterized in that: The wind-resistant assembly (8) comprises an upper fixing seat (81), a shear pin (82) and a lower fixing seat (83); the upper fixing seat (81) is fixedly connected to the lower surface of the top plate (4); the lower fixing seat (83) is fixedly connected to the upper surface of the lower support plate (1); the upper fixing seat (81) and the lower fixing seat (83) are connected via the shear pin (82).