Tension-compression friction pendulum seismic isolation bearing

Abstract

The utility model relates to the technical field of shock absorption, disclose anti -tensile friction pendulum seismic isolation support, including upper connecting plate, the upper connecting plate bottom has the hinged sliding spherical cap, the sliding spherical cap bottom abuts with lower connecting plate, the lower connecting plate bottom is provided with the locating plate, the lower connecting plate top is provided with anti -tensile subassembly, the anti -tensile subassembly includes a plurality of even distribution's threaded rod, the threaded rod screw connection is in the lower connecting plate top, the threaded rod bottom fixedly connected with the limit block, the threaded rod outside slide connection has the installation clamping block, the installation clamping block top is provided with the mounting hole, the threaded rod slide connection is in the mounting hole, the installation clamping block top abuts with the limit nut, the installation clamping block outside fixedly connected with the anti -tensile ring, in the utility model, by setting up sliding spherical cap and anti -tensile subassembly, when the vertical tensile force effect, limit sliding spherical cap vertical displacement, solved the traditional support sliding surface separation or the problem of swing body instability.

Description

Technical Field

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

[0002] With the acceleration of urbanization, the construction of high-rise buildings and large-scale infrastructure is increasing, leading to a corresponding increase in the risk of earthquake damage to building structures. Traditional earthquake-resistant technologies mainly resist seismic forces by increasing structural stiffness and strength, but this method often results in structures bearing excessive internal forces during earthquakes, even causing severe damage. In recent years, seismic isolation technology has gradually become the mainstream direction of seismic design. By installing seismic isolation devices in the building foundation or key areas, the transmission of seismic energy to the superstructure is effectively reduced, thereby protecting building safety.

[0003] Currently, common friction pendulum seismic isolation bearings mainly consist of three parts: a sliding surface, a pendulum body, and a base. The sliding surface is typically made of a high-friction-coefficient material, such as polytetrafluoroethylene (PTFE) or stainless steel, to achieve energy dissipation through sliding friction. The pendulum body uses an arc-shaped design to achieve a self-resetting function. The base is used to fix the bearing and connect it to the building structure. In addition, some improved friction pendulum bearings have added damping devices, such as lead cores or rubber pads, to further improve energy dissipation capacity.

[0004] However, traditional friction pendulum bearings are prone to problems such as sliding surface separation or pendulum instability when subjected to vertical tensile forces. Especially under strong earthquakes, the insufficient tensile strength of the bearings may lead to seismic isolation failure. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a tensile friction pendulum isolation bearing, which aims to improve the problem that traditional friction pendulum bearings are prone to sliding surface separation or pendulum instability when subjected to vertical tension, especially the problem of isolation failure due to insufficient tensile performance under strong earthquakes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tensile friction pendulum vibration isolation support, comprising an upper connecting plate, a sliding spherical crown hinged to the bottom of the upper connecting plate, a lower connecting plate abutting the bottom of the sliding spherical crown, a positioning plate provided at the bottom of the lower connecting plate, and a tensile component provided at the top of the lower connecting plate; The tensile component includes multiple evenly distributed threaded rods, which are threadedly connected to the top of the lower connecting plate. A limit block is fixedly connected to the bottom of the threaded rod, and a mounting block is slidably connected to the outside of the threaded rod. The mounting block has a mounting hole at its top, and the threaded rod is slidably connected in the mounting hole. A limit nut abuts against the top of the mounting block, and a tensile ring is fixedly connected to the outside of the mounting block.

[0007] The above technical solution achieves the effect of foundation seismic isolation and limits the vertical displacement of the sliding spherical crown through tensile structure, thus preventing the separation of the sliding surface.

[0008] Preferably, the bottom of the positioning plate is fixedly connected with a plurality of evenly distributed lower embedded connecting sleeves, the top of the upper connecting plate is fixedly connected with a plurality of evenly distributed upper embedded connecting sleeves, the bottom of the positioning plate is fixedly connected with a lower limb block, and the lower connecting plate is internally threaded with a plurality of evenly distributed bolts.

[0009] The above technical solution achieves a firm connection between the support and the upper and lower structures, ensuring stable load transfer.

[0010] Preferably, the top of the positioning plate has multiple evenly distributed limiting grooves, and the limiting block is slidably connected in the limiting grooves.

[0011] The above technical solution has achieved the effect of ensuring the stable operation of the tensile components.

[0012] Preferably, the bolt is slidably connected inside the positioning plate, and the front end of the bolt is threadedly connected inside the lower embedded connecting sleeve.

[0013] The above technical solution achieves the effect of enhancing the overall connection strength.

[0014] Preferably, the limiting nut abuts against the top of the mounting block, and the tensile ring is sleeved on the outside of the sliding spherical crown.

[0015] The above technical solution effectively constrains the vertical displacement of the sliding spherical crown.

[0016] Preferably, a dustproof enclosure is provided on the top of the lower connecting plate, and connecting strips are fixedly connected to both sides of the dustproof enclosure.

[0017] The above technical solution achieves the effect of protecting the internal components of the support from dust and impurities.

[0018] Preferably, the top side of the dustproof enclosure abuts against the bottom side of the upper connecting plate.

[0019] The above technical solutions have achieved the effect of enhancing the sealing effect of the support and improving its dustproof and rainproof capabilities.

[0020] Preferably, the top boss surface of the lower connecting plate is a friction surface.

[0021] The above technical solution achieves the effect of dissipating seismic energy through friction when the sliding spherical crown slides.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, a sliding spherical crown is set between the upper connecting plate and the lower connecting plate, and a tensile component consisting of a threaded rod, a mounting block, a limiting nut and a tensile ring is added to the top of the lower connecting plate. When a vertical tensile force is applied, the tensile ring restricts the vertical displacement of the sliding spherical crown through the cooperation of the mounting block, the threaded rod and the limiting nut. This effectively solves the problem of sliding surface separation or pendulum instability that easily occurs when the traditional friction pendulum support is subjected to vertical tensile force.

[0023] 2. In this utility model, the connection structure of the positioning plate and the upper and lower embedded connecting sleeves and bolts ensures that the support is firmly fixed to the upper and lower structures and stably transmits the load. The cooperation of the limiting groove and the limiting block ensures the stable operation of the tensile components. The dustproof enclosure effectively protects the internal components of the support, further enhancing the overall stability, durability and reliability of the vibration isolation function of the support. Attached Figure Description

[0024] Figure 1 This is a perspective view of the anti-tensile friction pendulum vibration isolation support proposed in this utility model; Figure 2 This is a schematic diagram of the upper connecting plate structure of the anti-tensile friction pendulum seismic isolation support proposed in this utility model; Figure 3 This is a schematic diagram of the positioning plate of the anti-tensile friction pendulum seismic isolation support proposed in this utility model; Figure 4 This is a schematic diagram of the lower connecting plate structure of the anti-tensile friction pendulum seismic isolation support proposed in this utility model; Figure 5 This is a schematic diagram of the tensile component structure of the tensile friction pendulum seismic isolation support proposed in this utility model; Figure 6 This is a schematic diagram of the connecting clip structure of the anti-tensile friction pendulum seismic isolation support proposed in this utility model.

[0025] Legend: 1. Upper connecting plate; 2. Upper embedded connecting sleeve; 3. Lower connecting plate; 4. Limiting groove; 5. Sliding spherical crown; 6. Tensile ring; 7. Mounting block; 8. Mounting hole; 9. Threaded rod; 10. Limiting block; 11. Limiting nut; 12. Positioning plate; 13. Lower embedded connecting sleeve; 14. Lower limb block; 15. Bolt; 16. Dustproof enclosure; 17. Connecting strip. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0027] Reference Figures 1-6This utility model provides an embodiment of a tensile friction pendulum seismic isolation bearing, including an upper connecting plate 1. The upper connecting plate 1 is used to stably transfer the load of the upper structure to the inside of the bearing, and at the same time provides a base carrier for the hinged installation of the sliding spherical crown 5. The sliding spherical crown 5 is hinged to the bottom of the upper connecting plate 1. The sliding spherical crown 5 dissipates seismic energy by sliding at the bottom. The bottom of the sliding spherical crown 5 abuts against a lower connecting plate 3. The top boss surface of the lower connecting plate 3 is a friction surface. The sliding spherical crown 5 generates frictional resistance by sliding on the friction surface, thereby dissipating seismic energy and reducing the vibration intensity of the upper structure. A positioning plate 12 is provided at the bottom of the lower connecting plate 3. The positioning plate 12 is used to accurately fix the position of the lower connecting plate 3 to ensure that the installation elevation and level of the bearing meet the design standards and avoid installation deviations affecting the seismic isolation function. A tensile component is provided at the top of the lower connecting plate 3. The tensile component includes multiple evenly distributed threaded rods 9, which are threadedly connected to the top of the lower connecting plate 3. The threaded rods 9 evenly distribute the vertical tensile force, ensuring uniform stress distribution and preventing excessive local stress that could damage the structure. A limiting block 10 is fixedly connected to the bottom of each threaded rod 9, restricting its vertical movement and preventing it from dislodging from the lower connecting plate 3 under stress. The top of the positioning plate 12 has multiple evenly distributed limiting grooves 4, with the limiting blocks 10 slidably connected within them. The limiting grooves 4 and limiting blocks 10 work together to limit the horizontal displacement of the threaded rods 9. A mounting block 7 is slidably connected to the outside of each threaded rod 9, allowing it to slide vertically along the threaded rod 9. This facilitates adjusting the height of the tensile ring 6 according to actual working conditions, ensuring tensile strength. The ring 6 and the sliding spherical crown 5 always maintain effective contact. The top of the mounting block 7 has a mounting hole 8, and the threaded rod 9 is slidably connected in the mounting hole 8. The mounting hole 8 provides a passage for the threaded rod 9. Through the sliding cooperation with the threaded rod 9, the mounting block 7 can move smoothly along the threaded rod 9. The top of the mounting block 7 abuts against the limit nut 11. The limit nut 11 abuts against the top of the mounting block 7 and fixes its position by pressing against the mounting block 7 to prevent the mounting block 7 from sliding arbitrarily under the action of vertical force. The outside of the mounting block 7 is fixedly connected to the tensile ring 6. The tensile ring 6 is sleeved on the outside of the sliding spherical crown 5. The tensile ring 6 is connected to the threaded rod 9 through the mounting block 7 to form a ring constraint structure around the sliding spherical crown 5, which is used to directly limit the vertical displacement of the sliding spherical crown 5.

[0028] Reference Figure 2 and Figure 6The bottom of the positioning plate 12 is fixedly connected with multiple evenly distributed embedded connecting sleeves 13. The embedded connecting sleeves 13 are key connecting components for the connection between the support and the foundation structure, ensuring a firm connection between the support and the foundation. The top of the upper connecting plate 1 is fixedly connected with multiple evenly distributed upper embedded connecting sleeves 2. The upper embedded connecting sleeves 2 are used to connect the support to the upper building structure, achieving a rigid connection between the support and the upper structure, and ensuring stable load transfer. The bottom of the positioning plate 12 is fixedly connected with a lower limb pier 14. The lower limb pier 14 serves as the basic support component of the support, providing vertical load-bearing support for the positioning plate 12 and the entire support. The lower connecting plate 3 has multiple evenly distributed bolts 15 threaded inside. The bolts 15 are slidably connected inside the positioning plate 12. The bolts 15 are connected by... The threaded connection secures the lower connecting plate 3 to the positioning plate 12, ensuring a tight fit between them. The front end of the bolt 15 is threaded into the lower embedded connecting sleeve 13. The bolt 15 connects the lower connecting plate 3, the positioning plate 12, and the lower embedded connecting sleeve 13 into a whole, ensuring effective load transfer. A dustproof enclosure 16 is provided on the top of the lower connecting plate 3. Connecting strips 17 are fixedly connected to both sides of the dustproof enclosure 16. The top side of the dustproof enclosure 16 abuts against the bottom side of the upper connecting plate 1. The dustproof enclosure 16 can prevent external dust, rainwater, and other impurities from entering the interior of the support, avoiding impurities adhering to the friction surface or tensile components and affecting their working performance. The connecting strips 17 are used to enhance the installation stability of the dustproof enclosure 16, and the dustproof enclosure 16 can be removed through the connecting strips 17.

[0029] Working principle: When an earthquake occurs, the upper building structure drives the upper connecting plate 1 to move horizontally. Since the upper connecting plate 1 and the sliding spherical crown 5 are connected by a hinge, the sliding spherical crown 5 moves horizontally synchronously with the upper connecting plate 1. At this time, the bottom of the sliding spherical crown 5 contacts the friction surface of the top of the lower connecting plate 3 and slides along the friction surface under the action of horizontal force. The seismic energy is dissipated through the frictional resistance during the sliding process, thereby reducing the vibration intensity transmitted to the upper structure. During this process, the limiting block 10 in the tensile component slides slightly in the limiting groove 4 of the positioning plate 12 with the horizontal movement of the sliding spherical crown 5. This provides a flexible constraint in the horizontal direction for the threaded rod 9 to avoid rigid force damage, and does not affect the horizontal sliding function of the sliding spherical crown 5, ensuring that the seismic isolation and energy dissipation process proceeds stably.

[0030] When the support is subjected to vertical tension, the sliding spherical crown 5 tends to move upward and separate from the friction surface of the lower connecting plate 3. The anti-tension ring 6, which is sleeved on the outside of the sliding spherical crown 5, directly applies vertical constraint to the sliding spherical crown 5. The anti-tension ring 6 is connected to the threaded rod 9 through the mounting block 7. The position of the mounting block 7 is locked by the limit nut 11 at the top. The threaded rod 9 is fixed to the lower connecting plate 3 by threads, forming a tensile force transmission path, effectively limiting the vertical displacement of the sliding spherical crown 5 and preventing the sliding surface from separating.

Claims

1. A tensile friction pendulum seismic isolation bearing, comprising an upper connecting plate (1), characterized in that: The upper connecting plate (1) is hinged to a sliding spherical crown (5) at its bottom, the lower connecting plate (3) is abutted against the bottom of the sliding spherical crown (5), a positioning plate (12) is provided at the bottom of the lower connecting plate (3), and a tensile component is provided at the top of the lower connecting plate (3). The tensile component includes multiple evenly distributed threaded rods (9), which are threadedly connected to the top of the lower connecting plate (3). A limit block (10) is fixedly connected to the bottom of the threaded rod (9). A mounting block (7) is slidably connected to the outside of the threaded rod (9). A mounting hole (8) is opened on the top of the mounting block (7). The threaded rod (9) is slidably connected in the mounting hole (8). A limit nut (11) is abutted on the top of the mounting block (7). A tensile ring (6) is fixedly connected to the outside of the mounting block (7).

2. The anti-tensile friction pendulum seismic isolation bearing according to claim 1, characterized in that: The bottom of the positioning plate (12) is fixedly connected with a plurality of evenly distributed lower embedded connecting sleeves (13), the top of the upper connecting plate (1) is fixedly connected with a plurality of evenly distributed upper embedded connecting sleeves (2), the bottom of the positioning plate (12) is fixedly connected with a lower limb block (14), and the lower connecting plate (3) is internally threaded with a plurality of evenly distributed bolts (15).

3. The anti-tensile friction pendulum seismic isolation bearing according to claim 1, characterized in that: The top of the positioning plate (12) is provided with multiple evenly distributed limiting grooves (4), and the limiting block (10) is slidably connected in the limiting grooves (4).

4. The anti-tensile friction pendulum seismic isolation bearing according to claim 2, characterized in that: The bolt (15) is slidably connected inside the positioning plate (12), and the front end of the bolt (15) is threadedly connected inside the lower embedded connecting sleeve (13).

5. The anti-tensile friction pendulum seismic isolation bearing according to claim 1, characterized in that: The limiting nut (11) abuts against the top of the mounting block (7), and the tensile ring (6) is sleeved on the outside of the sliding spherical crown (5).

6. The anti-tensile friction pendulum seismic isolation bearing according to claim 1, characterized in that: The lower connecting plate (3) is provided with a dustproof enclosure (16) on the top, and connecting strips (17) are fixedly connected to both sides of the dustproof enclosure (16).

7. The anti-tensile friction pendulum seismic isolation bearing according to claim 6, characterized in that: The top side of the dustproof enclosure (16) abuts against the bottom side of the upper connecting plate (1).

8. The anti-tensile friction pendulum seismic isolation bearing according to claim 1, characterized in that: The top boss surface of the lower connecting plate (3) is a friction surface.

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