Building friction pendulum seismic isolation bearing

Abstract

The utility model relates to the technical field of building shock insulation, disclose building friction pendulum shock insulation support, including upper embedded plate and lower embedded plate, the lower embedded plate bottom is fixedly connected with lower connecting sleeve, the lower embedded plate top is fixedly connected with lower shock insulation support, the upper embedded plate top is fixedly connected with upper connecting sleeve, the upper embedded plate bottom is fixedly connected with upper shock insulation support, be provided with limit component between the upper shock insulation support and lower shock insulation support, the limit component includes upper limit axle. In the utility model, the displacement of vibration is absorbed through four spring dampers around the upper shock insulation support and the lower shock insulation support, the spring damper has a certain displacement distance above the axial direction of the upper limit axle and the lower limit axle on the outer wall of the upper limit axle and the lower limit axle, reaches the effect of front and back and left and right and axial location, solves the problem that the traditional friction pendulum shock insulation support is easy to dislocation deviation when swinging, improves the practicality of shock insulation support.

Description

Technical Field

[0001] This utility model relates to the field of building seismic isolation technology, and in particular to a building friction pendulum seismic isolation bearing. Background Technology

[0002] Friction pendulum seismic isolation bearings are a type of vibration reduction and isolation device used in high-rise buildings, long-span structures, and bridge engineering. This device, by placing isolation units between the superstructure and foundation, achieves relative sliding between the structure and the foundation under external forces such as earthquakes or wind loads. This prolongs the structural vibration period, reduces the energy input from seismic motion, and thus protects the main structure and improves overall seismic performance. As an important seismic resistance measure, friction pendulum seismic isolation bearings have been widely applied in various types of building engineering projects.

[0003] Existing friction pendulum seismic isolation bearings generally employ a spherical friction pair connection, utilizing friction and geometry to dissipate vibrational energy and restore displacement. Under seismic loading, the superstructure slides against the bearing via the friction surface; the friction dissipates some seismic energy, while the spherical geometry of the bearing provides self-restoring capability under load, allowing the structure to return to its initial position after vibration. These types of seismic isolation bearings have a relatively simple overall structure and possess high load-bearing capacity and reliable restoration performance, thus they are widely used in engineering practice.

[0004] However, existing friction pendulum seismic isolation bearings still have shortcomings in practical applications. Because they rely on the oscillating action of the friction pair to absorb seismic energy, they are prone to misalignment under complex seismic movements, especially under multi-directional loads or large displacements. This misalignment affects the bearing's limiting stability, reduces its seismic isolation performance, and consequently weakens the overall seismic resistance of the building, limiting the reliability and applicability of this type of device. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a building friction pendulum seismic isolation bearing, which aims to improve the problem of easy misalignment and displacement of traditional friction pendulum seismic isolation bearings during swing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a building friction pendulum seismic isolation bearing, comprising an upper embedded plate and a lower embedded plate, wherein a lower connecting sleeve is fixedly connected to the bottom of the lower embedded plate, a lower seismic isolation bearing is fixedly connected to the top of the lower embedded plate, an upper connecting sleeve is fixedly connected to the top of the upper embedded plate, an upper seismic isolation bearing is fixedly connected to the bottom of the upper embedded plate, and a limit component is provided between the upper seismic isolation bearing and the lower seismic isolation bearing; The limiting component includes an upper limiting shaft, one end of which is fixedly connected to the outer wall of the upper seismic isolation bearing. A lower limiting shaft is fixedly connected to the outer wall of the lower seismic isolation bearing. A spring damper is slidably connected to the outer wall of the upper limiting shaft, and the output end of the spring damper is slidably connected to the outer wall of the lower limiting shaft. Both the upper and lower seismic isolation bearings have cavities inside. A reset component is provided on the outer wall of the upper limiting shaft. A pressure-bearing block is slidably connected inside the upper and lower seismic isolation bearings, and the outer wall of the pressure-bearing block fits against the inner wall of the cavity.

[0007] By adopting the above technical solution, the effect of limiting movement in all directions (front, back, left, right, and axial) is achieved.

[0008] Preferably, the reset assembly includes a reset spring, which is sleeved on the outer wall of the upper limit shaft and the lower limit shaft. One end of the reset spring is fixedly connected to one end of the lower limit shaft, and the other end of the reset spring is fixedly connected to the outer wall of the reset spring.

[0009] By adopting the above technical solution, the dustproof effect of the cavity is achieved.

[0010] Preferably, the outer walls of both the upper and lower seismic isolation supports are fixedly connected with connecting tongue plates.

[0011] By adopting the above technical solution, the connection between the seismic isolation bearing and the embedded plate is facilitated.

[0012] Preferably, a rubber sleeve is provided between the upper and lower seismic isolation bearings. The rubber sleeve is semi-circular and is used to prevent dust from entering the cavities inside the upper and lower seismic isolation bearings.

[0013] By adopting the above technical solution, the dustproof effect of the cavity is achieved.

[0014] Preferably, the inner walls of both the upper and lower ends of the rubber sleeve are fixedly connected with connecting rings.

[0015] By adopting the above technical solution, the rubber sleeve can be easily installed.

[0016] Preferably, both the upper and lower seismic isolation supports have connecting grooves on their outer walls.

[0017] By adopting the above technical solution, the effect of connecting the rubber sleeve to the seismic isolation bearing is achieved.

[0018] Preferably, the rubber sleeve is fitted inside the connecting groove by a connecting ring.

[0019] By adopting the above technical solution, the installation of rubber sleeves can be made easier.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, the upper and lower seismic isolation supports are firstly connected by four spring dampers around the perimeter to absorb the displacement generated by vibration. The spring dampers have a certain displacement distance in the axial direction of the upper and lower limit shafts above the outer wall of the upper and lower limit shafts, which achieves the effect of limiting the front, back, left, right and axial movement. This solves the problem that traditional friction pendulum seismic isolation supports are prone to misalignment and displacement when swinging, and improves the practicality of the seismic isolation support.

[0021] 2. In this utility model, the rubber sleeve is connected to the upper and lower seismic isolation bearings by fitting the connecting rings on the upper and lower sides into the connecting grooves opened on the outer walls of the upper and lower seismic isolation bearings. This makes it easy to disassemble and replace the rubber sleeve after aging, achieving the effect of dust prevention in the cavity and facilitating installation. It solves the problem of dust entering the upper and lower seismic isolation bearings due to the gap between them, which is easily affected by the environment, and improves the service life of the seismic isolation bearings. Attached Figure Description

[0022] Figure 1 This is a perspective view of the building friction pendulum seismic isolation bearing proposed in this utility model; Figure 2 This is a plan view of the building friction pendulum seismic isolation bearing proposed in this utility model. Figure 3 This is a schematic diagram of the reset spring structure of the building friction pendulum seismic isolation support proposed in this utility model. Figure 4 This is a schematic diagram of the internal structure of the upper seismic isolation bearing of the building friction pendulum seismic isolation bearing proposed in this utility model. Figure 5 This is a schematic diagram of the rubber sleeve structure of the building friction pendulum seismic isolation bearing proposed in this utility model. Figure 6 This is a schematic diagram of the bearing block structure of the building friction pendulum seismic isolation bearing proposed in this utility model.

[0023] Legend: 1. Upper embedded plate; 2. Upper connecting sleeve; 3. Lower embedded plate; 4. Lower connecting sleeve; 5. Upper seismic isolation bearing; 6. Lower seismic isolation bearing; 7. Connecting tongue plate; 8. Cavity; 9. Bearing block; 10. Upper limit shaft; 11. Lower limit shaft; 12. Return spring; 13. Spring damper; 14. Rubber sleeve; 15. Connecting ring; 16. Connecting groove. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0025] Reference Figures 1-3 and Figure 6This utility model provides an embodiment of a building friction pendulum seismic isolation bearing, comprising an upper embedded plate 1 and a lower embedded plate 3. The upper embedded plate 1 and the lower embedded plate 3 serve as structural load-bearing components of the device, used to connect and fix it to the main building structure. A lower connecting sleeve 4 is fixedly connected to the bottom of the lower embedded plate 3, which cooperates with the foundation components to achieve stable installation of the bearing in the building structure. A lower seismic isolation bearing 6 is fixedly connected to the top of the lower embedded plate 3, serving as one of the main load-bearing and seismic isolation elements, used to cooperate with the upper structure to achieve seismic isolation. An upper connecting sleeve 2 is fixedly connected to the top of the upper embedded plate 1, used to reliably connect with the upper structural components to form an overall force transmission path. An upper seismic isolation bearing 5 is fixedly connected to the bottom of the upper embedded plate 1, and the upper seismic isolation bearing 5 cooperates with the lower seismic isolation bearing 6 to achieve seismic isolation and buffering effects on the building structure when subjected to earthquakes. A limit assembly is provided between the upper seismic isolation bearing 5 and the lower seismic isolation bearing 6. The limit assembly is used to provide limit protection when the bearings undergo relative displacement, preventing excessive movement from causing damage to the structure. The limiting assembly includes an upper limiting shaft 10, one end of which is fixedly connected to the outer wall of the upper seismic isolation bearing 5, serving as a guide and limiting mechanism between the upper and lower bearings. A lower limiting shaft 11 is fixedly connected to the outer wall of the lower seismic isolation bearing 6, forming a corresponding structure with the upper limiting shaft 10 to achieve coordination between limiting and resetting actions. A spring damper 13 is slidably connected to the outer wall of the upper limiting shaft 10, providing damping force during displacement to mitigate impact and extend the duration of action. The output end of the spring damper 13 is slidably connected to the outer wall of the lower limiting shaft 11, achieving flexible limiting and vibration reduction through this sliding connection. Both the upper and lower seismic isolation bearings 5 ​​and 6 have internal cavities 8, providing installation space for internal functional components and also serving as buffers and guides. A resetting assembly is provided on the outer wall of the upper limiting shaft 10, automatically resetting the bearing after it has been subjected to force and displacement, ensuring it returns to its initial working state.

[0026] Reference Figure 4 and Figure 5The upper isolation bearing 5 and the lower isolation bearing 6 are internally slidably connected by a pressure block 9. The outer wall of the pressure block 9 fits against the inner wall of the cavity 8, ensuring uniform force distribution and improving the load-bearing capacity and stability of the isolation bearing. The reset assembly includes a reset spring 12, which is sleeved on the outer wall of the upper limit shaft 10 and the lower limit shaft 11, providing a reset force after the bearing undergoes relative displacement. One end of the reset spring 12 is fixedly connected to one end of the lower limit shaft 11, and the other end is fixedly connected to the outer wall of the reset spring 12. This structure achieves reset constraint between the upper limit shaft 10 and the lower limit shaft 11. Both the upper isolation bearing 5 and the lower isolation bearing 6 are fixedly connected to a connecting tongue plate 7. The connecting tongue plate 7 is used to achieve auxiliary fixation and connection between the isolation bearing and the external structure, improving the overall installation stability. A rubber sleeve 14 is installed between the upper seismic isolation bearing 5 and the lower seismic isolation bearing 6. The rubber sleeve 14 is semi-circular and mainly used to protect the cavities 8 inside the upper seismic isolation bearing 5 and the lower seismic isolation bearing 6 from dust, preventing dust and impurities from entering and affecting the bearing performance. Connecting rings 15 are fixedly connected to the inner walls of both the upper and lower ends of the rubber sleeve 14. The connecting rings 15 are used to improve the reliability of the fixation between the rubber sleeve 14 and the bearing. Connecting grooves 16 are opened on the outer walls of both the upper seismic isolation bearing 5 and the lower seismic isolation bearing 6. The connecting grooves 16 fit into the connecting rings 15, allowing the rubber sleeve 14 to be firmly installed on the outer wall of the bearing, thereby achieving long-term effective sealing and protection. The overall structure achieves a reliable connection with the building structure through upper and lower embedded plates, and the upper seismic isolation bearing 5 and the lower seismic isolation bearing 6 form the main seismic isolation body.

[0027] Working principle: When using the building friction pendulum seismic isolation bearing, firstly, the lower support reinforcement is tied, then the lower embedded plate 3 is inserted into the reinforcement through the lower connecting sleeve 4, the formwork is erected and the concrete is poured, then the lower seismic isolation bearing 6 is installed on the lower embedded plate 3 with bolts, then the upper embedded plate 1 is installed on the top of the upper seismic isolation bearing 5, the upper support reinforcement is tied on the top of the upper embedded plate 1, the formwork is erected and the concrete is poured, and then the upper seismic isolation bearing 5 and the lower seismic isolation bearing 6 are installed; When the building is subjected to lateral vibration, the upper seismic isolation support 5 and the lower seismic isolation support 6 are connected by four spring dampers 13 around the perimeter to absorb the displacement generated by the vibration. One end of the spring damper 13 is connected to the upper seismic isolation support 5 through the upper limit shaft 10, and the other end of the spring damper 13 is connected to the lower seismic isolation support 6 through the lower limit shaft 11. At the same time, the spring damper 13 has a certain displacement distance in the axial direction above the upper limit shaft 10 and the lower limit shaft 11 on the outer wall of the upper limit shaft 10 and the lower limit shaft 11. This allows the spring dampers 13 on the left and right sides to have a certain deformation distance when vibrating in the front and back directions. The spring dampers 13 are supported and reset on the upper limit shaft 10 and the lower limit shaft 11 by the tension of the reset spring 12, which can keep the spring dampers 13 in the middle position of the upper limit shaft 10 and the lower limit shaft 11, thus achieving the effect of limiting the front, back, left and right directions and the axial direction. The gap between the lower connecting sleeve 4 and the lower vibration isolation support 6 is protected by the gap of the rubber sleeve 14. The rubber sleeve 14 is connected by the connecting rings 15 on the upper and lower sides, which are fitted into the connecting grooves 16 opened on the outer wall of the upper vibration isolation support 5 and the lower vibration isolation support 6. This makes it easy to disassemble and replace the rubber sleeve 14 after aging. In addition, the rubber sleeve 14 can be used to prevent dust from the pressure block 9 between the upper vibration isolation support 5 and the lower vibration isolation support 6, thus achieving the effect of dust prevention and easy installation inside the cavity 8.

Claims

1. A building friction pendulum seismic isolation bearing, comprising an upper embedded plate (1) and a lower embedded plate (3), characterized in that: The lower embedded plate (3) is fixedly connected to the bottom of the lower connecting sleeve (4), the lower embedded plate (3) is fixedly connected to the top of the lower seismic isolation support (6), the upper embedded plate (1) is fixedly connected to the top of the upper connecting sleeve (2), the upper embedded plate (1) is fixedly connected to the bottom of the upper seismic isolation support (5), and a limit assembly is provided between the upper seismic isolation support (5) and the lower seismic isolation support (6). The limiting component includes an upper limiting shaft (10), one end of which is fixedly connected to the outer wall of the upper seismic isolation support (5). The outer wall of the lower seismic isolation support (6) is fixedly connected to a lower limiting shaft (11). A spring damper (13) is slidably connected to the outer wall of the upper limiting shaft (10). The output end of the spring damper (13) is slidably connected to the outer wall of the lower limiting shaft (11). Both the upper seismic isolation support (5) and the lower seismic isolation support (6) have cavities (8) inside. The outer wall of the upper limiting shaft (10) is provided with a reset component. The upper seismic isolation support (5) and the lower seismic isolation support (6) are slidably connected to a pressure block (9). The outer wall of the pressure block (9) is in contact with the inner wall of the cavity (8).

2. The building friction pendulum seismic isolation bearing according to claim 1, characterized in that: The reset assembly includes a reset spring (12), which is sleeved on the outer wall of the upper limit shaft (10) and the lower limit shaft (11). One end of the reset spring (12) is fixedly connected to one end of the lower limit shaft (11), and the other end of the reset spring (12) is fixedly connected to the outer wall of the reset spring (12).

3. The building friction pendulum seismic isolation bearing according to claim 1, characterized in that: Both the upper seismic isolation bearing (5) and the lower seismic isolation bearing (6) have a connecting tongue plate (7) fixedly connected to their outer walls.

4. The building friction pendulum seismic isolation bearing according to claim 1, characterized in that: A rubber sleeve (14) is provided between the upper seismic isolation bearing (5) and the lower seismic isolation bearing (6). The rubber sleeve (14) is semi-circular and is used to prevent dust from entering the cavity (8) inside the upper seismic isolation bearing (5) and the lower seismic isolation bearing (6).

5. The building friction pendulum seismic isolation bearing according to claim 4, characterized in that: The rubber sleeve (14) has connecting rings (15) fixedly connected to the inner walls of both the upper and lower ends.

6. The building friction pendulum seismic isolation bearing according to claim 1, characterized in that: Both the upper seismic isolation bearing (5) and the lower seismic isolation bearing (6) have connecting grooves (16) on their outer walls.

7. The building friction pendulum seismic isolation bearing according to claim 4, characterized in that: The rubber sleeve (14) is fitted inside the connecting groove (16) via a connecting ring (15).

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