Maintainable friction pendulum shock insulation support with shock absorption function

Abstract

The maintainable friction pendulum shock insulation support comprises an upper supporting plate, a lower supporting plate, a spherical hollow shock absorption and isolation block and a connecting plate, the spherical hollow shock absorption and isolation block is arranged between the upper supporting plate and the lower supporting plate, and the outer surface of the spherical hollow shock absorption and isolation block and the bottom surface of the upper supporting plate and the top surface of the lower supporting plate form friction pairs; the connecting plate is detachably mounted on the upper supporting plate and the lower supporting plate; a sealed middle cavity is formed in the spherical hollow shock absorption and isolation block, and the middle cavity is filled with a shock absorption medium, so that the support has the dual functions of friction pendulum shock isolation and fluid damping shock absorption; the upper supporting plate is formed by splicing a plurality of modular components, and by detachably removing part of the modular components, the spherical hollow seismic mitigation and isolation blocks can be exposed for maintenance, detection or replacement under the condition that the support is not connected with a main body structure. The technical problems that a traditional support is single in function, inconvenient to maintain and difficult to give consideration to both tensile strength and compactness are solved.

Description

Technical Field

[0001] This invention relates to the field of building seismic isolation technology, and in particular to a maintainable friction pendulum seismic isolation bearing with vibration reduction function. Background Technology

[0002] Friction pendulum seismic isolation bearings are seismic isolation devices that extend the vibration period of a structure through spherical oscillation and dissipate seismic energy through friction at the sliding interface. Traditional friction pendulum bearings primarily rely on frictional energy dissipation for isolation, but lack an effective vibration reduction mechanism, resulting in limited control over structural vibrations under dynamic loads such as earthquakes or wind-induced vibrations. Furthermore, traditional bearings typically lack effective tensile strength between the upper and lower bearing plates, and bearings with partial tensile structures often lead to increased volume. More importantly, existing bearings are mostly integral sealed structures; after long-term use, if internal components wear or degrade, local inspection and maintenance are impossible, requiring complete replacement, resulting in high maintenance costs and long construction periods. Therefore, developing a friction pendulum seismic isolation bearing that combines efficient vibration reduction, ease of maintenance, and a compact structure has significant engineering application value. Summary of the Invention

[0003] The present invention aims to overcome the shortcomings of the prior art and provide a maintainable friction pendulum isolation bearing with vibration reduction function.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a maintainable friction pendulum isolation bearing with vibration reduction function, comprising:

[0005] Upper support plate;

[0006] The lower support plate is positioned opposite to the upper support plate.

[0007] A spherical hollow vibration damping block is set between the upper support plate and the lower support plate, and its outer surface forms a friction pair with the bottom surface of the upper support plate and the top surface of the lower support plate, respectively.

[0008] A connecting plate, which can be detachably installed on the upper support plate and the lower support plate, is used to connect the two into an integral support structure;

[0009] The spherical hollow vibration isolation block has a sealed central cavity inside, which is filled with a damping medium, so that the support has the dual functions of friction pendulum vibration isolation and fluid damping vibration reduction.

[0010] The upper support plate is assembled from multiple modular components. By detachably removing some of the modular components, the spherical hollow vibration damping block can be exposed for maintenance, inspection or replacement without disconnecting the support from the main structure.

[0011] Specifically, the modular components of the upper support plate include an upper support main plate, an upper support auxiliary plate, and a toothed support block. The two upper support main plates are symmetrically and detachably assembled. The upper support auxiliary plate is located at the end of the interface of the upper support main plate and is detachably connected to the upper support main plate, forming the main support and tensile force transmission path. The toothed support block is removably disposed between the upper support main plate and the lower support plate, and is arranged in an anti-symmetrical manner with the upper support auxiliary plate in the plane.

[0012] Specifically, the connecting plate includes a main board interconnecting plate, a main and auxiliary support plate, and a main thread support plate. The main board interconnecting plate is used to connect two upper support main boards. The main and auxiliary support plates are used to connect upper support accessories, upper support plates, and lower support plates. The main thread support plate is used to connect the upper support plates and lower support plates and to limit the thread support blocks.

[0013] Specifically, the top of the upper support main board is connected to the building through embedded parts, and the bottom is provided with an upper groove that matches the top of the spherical hollow vibration damping block. The end of the interface of the upper support main board is provided with an upper support auxiliary slot for accommodating the upper support auxiliary parts, and the bottom of the right-angle end is provided with a toothed support block slot for accommodating the toothed support block.

[0014] Specifically, on the adjacent sides of the ends of the two upper support motherboard interfaces after assembly, there are motherboard interconnection plate slots for embedding the motherboard interconnection plate. The sides of the upper support motherboards are also provided with main and auxiliary support plate slots for embedding the main and auxiliary support plates and main tooth support plate slots for embedding the main tooth support plate.

[0015] Specifically, the top of the lower support plate has a groove that matches the bottom of the spherical hollow vibration damping block, and the side of the lower support plate has a support plate groove for embedding the main and auxiliary support plates and the main tooth support plate.

[0016] Specifically, the spherical hollow vibration isolation block includes an upper hemispherical vibration isolation block and a lower vibration isolation block. The two are fixedly connected and enclosed at the mating surface to form a middle cavity. A leak-proof filling membrane is installed in the middle cavity, and a vibration damping medium injection pipe communicating with the leak-proof filling membrane is installed in the lower vibration isolation block.

[0017] In particular, the leak-proof filling membrane is a closed, fluffy thick membrane with a structure of double-layered pleated polytetrafluoroethylene or modified polytetrafluoroethylene film, with glass fiber or rock wool filling the middle layer.

[0018] Specifically, the vibration damping medium injection pipe has an inlet connected to the leak-proof filling membrane at one end near the central cavity, and a check valve is installed inside it. The other end is connected to a sealing screw via a thread.

[0019] Specifically, the damping medium is a viscous fluid or gas.

[0020] The beneficial effects of this invention are:

[0021] Functional upgrades achieve dual effects of "seismic isolation + vibration reduction": By filling the interior of the spherical hollow seismic isolation block with viscous fluid or gas, it can not only isolate the seismic force through the principle of friction pendulum under seismic action, but also consume vibration energy by utilizing the fluid damping effect, significantly improving the seismic and wind vibration resistance of the structure.

[0022] Convenient maintenance and significantly reduced life-cycle costs: The upper support plate adopts a modular and detachable design (upper support accessories, toothed support blocks, etc.), which allows for the inspection, replacement or replenishment of the core spherical hollow vibration damping block without the need to replace the entire support. The maintenance operation is flexible and efficient, solving the problem of high maintenance costs of traditional supports.

[0023] Structural optimization balances tensile strength and compactness: A highly efficient tensile force transmission path is formed by a modular upper support plate and an embedded connecting plate. When subjected to tensile force, the force flow is reliably transmitted to the lower support plate through modules such as the upper support accessories and toothed support blocks, via key connecting components such as the main and auxiliary support plates and the main toothed support plate. While providing excellent tensile strength, the compactness of the support is ensured, overcoming the bulky defects of traditional tensile supports.

[0024] Easy installation and adjustment: The toothed support block design allows for fine-tuning of the position and tilt of the upper support main board during installation and maintenance, ensuring installation accuracy and performance. The modular design makes component replacement and system adjustment more flexible. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the external structure of the present invention;

[0027] Figure 3 for Figure 2 Sectional view of AA;

[0028] Figure 4 This is a schematic diagram of the upper support motherboard structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the toothed support block structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the lower support plate structure of the present invention;

[0031] Figure 7 This is a schematic diagram of an angle of the spherical hollow vibration damping block of the present invention;

[0032] Figure 8 This is another schematic diagram of the spherical hollow vibration damping block of the present invention;

[0033] In the picture:

[0034] 1-Upper support plate; 11-Upper support main board; 111-Upper groove; 112-Upper support auxiliary slot; 113-Threaded support block slot; 114-Main board inter-connector plate slot; 115-Main and auxiliary support plate slot; 116-Main threaded support plate slot; 12-Upper support auxiliary; 13-Threaded support block;

[0035] 2-Lower support plate; 21-Lower groove; 22-Support plate groove;

[0036] 3-Spherical hollow vibration damping block; 31-Intermediate cavity; 32-Upper hemispherical vibration damping block; 33-Lower vibration damping block; 34-Leak-proof filling membrane; 35-Vibration damping medium injection pipe; 36-Inlet; 37-Sealing screw;

[0037] 4-Connecting plate; 41-Main board inter-connecting plate; 42-Main and auxiliary support plates; 43-Main thread support plate;

[0038] The following will describe in detail, with reference to the accompanying drawings, embodiments of the present invention. Detailed Implementation

[0039] The present invention will be further described below with reference to embodiments:

[0040] like Figures 1-8 As shown, a maintainable friction pendulum isolation bearing with vibration damping function includes an upper support plate 1, a lower support plate 2, a spherical hollow vibration damping block 3, and a connecting plate 4. The lower support plate 2 is arranged opposite to the upper support plate 1; the spherical hollow vibration damping block 3 is disposed between the upper support plate 1 and the lower support plate 2, and its outer surface forms a friction pair with the bottom surface of the upper support plate 1 and the top surface of the lower support plate 2, respectively; the connecting plate 4 is detachably installed on the upper support plate 1 and the lower support plate 2 to connect the two into an integral support structure; wherein, the spherical hollow vibration damping block 3 has a sealed intermediate cavity 31 inside, which is filled with a damping medium (the damping medium is a viscous fluid or gas), so that the bearing has the dual functions of friction pendulum vibration isolation and fluid damping vibration reduction; the upper support plate 1 is assembled from multiple modular components, and by detachably removing some modular components, the spherical hollow vibration damping block 3 can be exposed for maintenance, inspection or replacement without disconnecting the bearing from the main structure.

[0041] By contacting the friction surfaces of the upper support plate 1, lower support plate 2, and spherical hollow seismic isolation block 3, the natural vibration period of the building is extended through oscillation, effectively isolating seismic energy and reducing the transmission of seismic loads to the superstructure, meeting the basic requirements for seismic isolation performance in the national standard "Friction Pendulum Seismic Isolation Bearing for Buildings". The spherical hollow seismic isolation block 3 has a central cavity 31 that can be filled with viscous fluid or gas. Combined with the expansion characteristics of the leak-proof filling membrane 34, it can further dissipate vibration energy. Compared to traditional bearings that only provide "seismic isolation", this design can reduce structural resonance response and improve overall vibration stability when dealing with reciprocating loads such as earthquakes and wind vibrations. Under seismic action, the spherical hollow seismic isolation block 3 not only achieves seismic isolation through frictional energy dissipation but also absorbs vibration energy through the viscous damping effect of the fluid, achieving a dual effect of vibration reduction and seismic isolation, significantly improving the seismic performance of the building.

[0042] The modular components of the upper support plate 1 include an upper support main plate 11, an upper support auxiliary plate 12, and a toothed support block 13. The two upper support main plates 11 are symmetrically and detachably assembled. The upper support auxiliary plate 12 is located at the end of the interface of the upper support main plate 11 and is detachably connected to the upper support main plate 11, forming the main support and tensile force transmission path. The toothed support block 13 is removably arranged between the upper support main plate 11 and the lower support plate 2, and is arranged in an anti-symmetrical manner with the upper support auxiliary plate 12 in the plane.

[0043] The upper support accessory 12 and the toothed support block 13 are designed as detachable structures, which facilitates maintenance without removing the entire support. The spherical hollow vibration damping block 3 can be inspected, filled with liquid / gas, replaced with friction powder or replaced with damaged parts by partial disassembly, jacking, etc., which greatly reduces the later maintenance cost and downtime.

[0044] The connecting plate 4 includes a main board interconnecting plate 41, a main and auxiliary support plate 42, and a main tooth support plate 43. The main board interconnecting plate 41 is used to connect two upper support main boards 11. The main and auxiliary support plate 42 is used to connect the upper support auxiliary component 12, the upper support plate 1, and the lower support plate 2. The main tooth support plate 43 is used to connect the upper support plate 1 and the lower support plate 2 and to limit the tooth support block 13.

[0045] Specifically, the connecting plate 4 is divided into a main plate inter-plate 41, a main and auxiliary support plate 42, and a main thread support plate 43. The strength and steel grade of these plates are not lower than those of the connected components. Their length should be no less than 0.5 times the height of the friction pendulum isolation bearing, and the distance between the upper and lower rows of bolts and the outermost edge should be no less than 0.5 times the bolt diameter. Their thickness h and width ls are determined based on tensile and compressive performance, and their cross-sectional area S = 4h·ls ≤ F / ξf (where F = max{Ftensile, 0.2N}, ξ is an empirical coefficient, generally taken as 0.85; f is the frictional strength). The design value of the yield strength of the steel for the friction pendulum vibration isolation bearing can be taken from the "Steel Structure Design Standard", such as 205MPa for Q235 steel. To ensure that the friction pendulum vibration isolation bearing has a good appearance, the main and auxiliary support plates 42 and the main tooth support plate 43 are both embedded. That is, the connecting plate 4 is installed inside the connected component at a position of 1 to 1.2 times the bolt head depth and is tightly fitted to the surrounding area. By planing and tightening the ends, the bearing capacity can be well integrated by relying on the combined stress performance of the bolt shear resistance, the friction between the plate and the connected component, and the longitudinal force of the plate.

[0046] The top of the upper support main board 11 is connected to the building through embedded parts, and the bottom is provided with an upper groove 111 that matches the top of the spherical hollow vibration damping block 3. The interface end of the upper support main board 11 is provided with an upper support auxiliary slot 112 for accommodating the upper support auxiliary 12, and the bottom of the right angle end is provided with a toothed support block slot 113 for accommodating the toothed support block 13.

[0047] On the adjacent sides of the interfaces of the two upper support motherboards 11 after assembly, there are motherboard interconnection plate slots 114 for embedding the motherboard interconnection plate 41. The sides of the upper support motherboards 11 are also provided with main and auxiliary support plate slots 115 for embedding the main and auxiliary support plates 42 and main tooth support plate slots 116 for embedding the main tooth support plate 43.

[0048] Specifically, the upper support main plate 11 is a steel structure block. The upper part is connected to the building through embedded parts, and the lower part has a semi-circular groove cut upwards from the center to ensure that it fits tightly with the spherical hollow vibration damping block 3 under normal conditions (maximum gap b≤30mm). The two upper support main plates 11 are doubly fixed by the embedded main plate connecting plate 41 and the outer hoop connecting plate 4 (main and auxiliary support plate 42, main tooth support plate 43) to ensure that they form a stable ring.

[0049] The thickness of the weakest part on the top surface of the upper support motherboard 11 should not be less than its width l. The width l of the upper support motherboard is determined according to the formula... (Where: N is the most unfavorable combination design value of the vertical action transmitted from the building to the top of the friction pendulum vibration isolation support; ξ is an empirical coefficient, generally taken as 0.85; f is the design value of the yield strength of the steel of the friction pendulum vibration isolation support, which can be taken according to the "Steel Structure Design Standard", such as 205MPa for Q235 steel; A is the contact area between the upper support main plate 11 and the upper building, which can be taken as πl(2r+2b+l) according to the ring calculation, where r is the horizontal nominal radius of the spherical hollow vibration isolation block 3 and b is the installation gap between the spherical hollow vibration isolation block 3 and the upper support main plate 11).

[0050] The upper support accessory 12 is a corner support block at the interface of the upper support main board 11. Its material and height are the same as the upper support main board 11. It can form a square support surface with the upper support main board 11 through the connecting plate 4 and is connected to the lower support plate 2. In the normal use state of the friction pendulum vibration isolation bearing, it can play a role in supporting the upper building or resisting tensile forces. After removing the upper support accessory 12, a flat jack can be installed at this location, and a support plate can be installed on the top of the jack to lift the upper building by about 10mm. At this time, the upper support main board 11 is separated from the upper building. The connecting nut between the two upper support main boards 11 can be removed, the connecting plate 41 between the main boards can be removed, and the two upper support main boards 11 can be moved to the outside of the friction pendulum vibration isolation bearing. The internal spherical hollow vibration damping block 3 can be inspected, filled with viscous fluid or air, and the anti-slip powder can be replaced. The upper support main board 11 and the spherical hollow vibration damping block 3 can also be replaced after severe vibration, which greatly reduces the amount of maintenance work and costs.

[0051] The toothed support block 13 is a corner support block positioned asymmetrically to the upper support accessory 12. Its material and height are the same as the upper support main plate 11, and it is located between the upper support main plate 11 and the lower support plate 2, without fixed connection. When the upper support accessory 12 cannot be removed due to excessive force, the toothed support block 13 and the connecting plate 4 on the outside of the upper support accessory 12 can be removed. The toothed support block 13 can be removed with a hammer, and the upper support main plate 11 can be lifted with a small range using a pry bar or jack to facilitate the removal of the upper support accessory 12. The same operation can be used when the upper support accessory 12 is difficult to install. After the upper support main plate 11 and the toothed support block 13 are installed, the position and tilt angle of the upper support main plate 11 can be adjusted by adjusting the toothed support block 13, ensuring the accuracy of the support installation and usage, and reducing the difficulty of maintenance.

[0052] The lower support plate 2 has a groove 21 at the top that matches the bottom of the spherical hollow vibration damping block 3, and the lower support plate 2 has a support plate groove 22 on the side for embedding the main and auxiliary support plates 42 and the main tooth support plate 43.

[0053] Specifically, the lower support plate 2 corresponds in position to the projection of the upper support main plate 11 and the upper support auxiliary plate 12. Its material is the same as that of the upper support main plate 11 and the upper support auxiliary plate 12, but its thickness can be appropriately reduced compared to the upper support main plate 11 and the upper support auxiliary plate 12 depending on the actual situation. At the position corresponding to the projection of the groove in the upper support main plate 11, the lower support plate 2 has a downward-facing groove, which is circular and used to house the spherical hollow vibration damping block 3. Under normal conditions, it fits tightly against the spherical hollow vibration damping block 3.

[0054] The overall support system is composed of "upper support plate + upper support accessories + toothed support block + connecting plate". The embedded connecting plate design hides the connectors inside the structure, which not only ensures the overall strength but also improves the appearance and avoids the increase in volume caused by additional protruding structures. This ensures the overall compactness of the support and adapts to the spatial requirements of different building foundations.

[0055] The modular upper support plate 1 and the embedded connecting plate 4 form an overall support system. The embedded connecting plate 4 design hides the connectors inside the structure, ensuring overall strength, improving the appearance, and avoiding the increase in volume caused by additional protruding structures. This ensures the overall compactness of the support and adapts to the spatial requirements of different building foundations. The upper support main plate 11 is made of steel structural blocks and is double-fixed with the main and auxiliary support plates 42 and the main tooth support plate 43 of the outer hoop through the embedded main plate connecting plate 41, forming a stable ring. The upper support auxiliary component 12 is made of the same material and height as the upper support main plate 11, and together they form a square support surface. Under normal use, it can work together to bear the load of the upper building and improve the overall deformation resistance of the support. The lower support plate 2 is designed according to the projection of the upper support structure. The groove is precisely placed with spherical vibration damping blocks to ensure that the force of each component is balanced and reduce local stress concentration.

[0056] The spherical hollow vibration damping block 3 includes an upper hemispherical vibration damping block 32 and a lower vibration damping block 33, which are fixedly connected and enclose a central cavity 31 at their mating surfaces. A leak-proof filling membrane 34 is installed inside the central cavity 31. A damping medium injection pipe 35, communicating with the leak-proof filling membrane 34, is installed inside the lower vibration damping block 33. The leak-proof filling membrane 34 is a closed, fluffy thick membrane, with a structure of a double-layered, wrinkled polytetrafluoroethylene (PTFE) or modified PTFE film, with a middle layer filled with glass fiber or rock wool. The damping medium injection pipe 35 has an inlet 36 near the central cavity 31, connected to the leak-proof filling membrane 34, and a check valve is installed inside it. The other end is connected to a sealing screw 37 via a threaded connection.

[0057] Specifically, the spherical hollow vibration damping block 3 can be single-spherical or double-spherical. The difference between the single-spherical hollow vibration damping block and the double-spherical hollow vibration damping block lies in whether the lower part of the lower isolation block 33 is arc-shaped; otherwise, they are the same.

[0058] The lower vibration isolation block 33 is preferably made of metal. The upper part of the lower vibration isolation block 33 can be an embedded groove around its perimeter, into which the upper hemispherical vibration isolation block 32 is embedded and fixed firmly by a fastener. Alternatively, it can be made of the same material as the upper hemispherical vibration isolation block 32 and cast together as a whole. The lower vibration isolation block 33 of a single-spherical hollow vibration damping block can be a cylinder. The lower vibration isolation block 33 of a double-spherical hollow vibration damping block can be a cylinder with an arc-shaped protrusion at the bottom.

[0059] The upper hemisphere isolation block 32 should preferably be made of polytetrafluoroethylene (PTFE), modified PTFE, or modified ultra-high molecular weight polyethylene (UHMWPE). PTFE should be made from fresh virgin material, while modified PTFE should be made from fresh virgin material with a novel high-molecular-weight reinforcing agent. The average particle size of fresh virgin PTFE should not exceed 50 μm. UHMWPE should be made from polyethylene raw materials with additives, and the molecular weight of the polyethylene should not be less than 9 million. Furthermore, the raw materials should be uniformly mixed, and recycled or reclaimed materials should not be used. The upper hemisphere isolation block 32 can be spherical or cylindrical with a spherical cap.

[0060] The upper hemispherical vibration isolation block 32 and the lower vibration isolation block 33 form an intermediate cavity 31, which can be filled with gas or viscous fluid to increase the vibration reduction effect of the vibration isolation support. When the intermediate cavity 31 is a vacuum, the spherical hollow vibration isolation block 3 is tightly fitted with the upper support main plate 11 and the lower support plate 2. After the upper building is built or the two-story building is completed, gas or viscous fluid can be filled into the intermediate cavity 31 through the vibration reduction medium injection pipe 35.

[0061] One side of the leak-proof filling membrane 34 is hot-melt welded to the periphery of the upper hemisphere isolation block 32 of the spherical hollow vibration damping block 3, and the other side is pressed tightly to the periphery of the bottom filling inlet 36 of the lower isolation block 33 of the spherical hollow vibration damping block 3. Its functions are: first, to expand effectively, which is more conducive to exerting the vibration damping and isolation effect of the spherical hollow vibration damping block 3; second, to close and prevent the filling liquid or gas from escaping.

[0062] When the lower isolation block 33 of the spherical hollow vibration damping block 3 is metal, a relatively long hole (for the vibration damping medium injection pipe 35) is drilled in the lower isolation block 33. A check valve is installed at the end of the hole, which automatically opens when liquid or gas is filled and automatically closes when filling is completed. The vibration damping medium injection pipe 35 is sealed with a sealing screw 37 (the length of the screw is 0.5 to 0.75 times that of the vibration damping medium injection pipe 35). When the lower isolation block 33 of the spherical hollow vibration damping block 3 is non-metallic, the vibration damping medium injection pipe 35 is a hollow round pipe with a check valve installed on the inside and is embedded in the lower isolation block 33. The vibration damping medium injection pipe 35 is sealed with a sealing screw 37.

[0063] Working principle of this invention:

[0064] Seismic isolation: When an earthquake occurs, the superstructure transmits the force to the spherical hollow seismic isolation block 3 through the upper support plate 1. The spherical surface slides, dissipating energy through friction and extending the structural period, thereby achieving seismic isolation.

[0065] Vibration reduction: At the same time, the damping medium in the intermediate cavity 31 generates reciprocating flow under the action of power, and consumes a large amount of vibration energy through the viscous damping effect, thereby achieving vibration reduction.

[0066] Maintenance: When maintenance is required, first remove the main and auxiliary support plates 42 and take off the upper support accessory 12. Then, a flat jack can be installed in this space to slightly lift the upper structure. Next, remove the main tooth support plate 43, remove the toothed support block 13, and then remove the main plate connecting plate 41. This allows the two upper support main plates 11 to be moved out, fully exposing the spherical hollow vibration damping block 3 for inspection, replacement, or replenishment of the damping medium via the injection pipe. After maintenance, reassemble all components.

[0067] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0068] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0069] The present invention has been described above by way of example. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or direct application to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A maintainable friction pendulum vibration isolation bearing with vibration damping function, characterized in that, include: Upper support plate (1); The lower support plate (2) is set opposite to the upper support plate (1); A spherical hollow vibration damping block (3) is set between the upper support plate (1) and the lower support plate (2), and its outer surface forms a friction pair with the bottom surface of the upper support plate (1) and the top surface of the lower support plate (2), respectively. The connecting plate (4) is detachably installed on the upper support plate (1) and the lower support plate (2) to connect the two into an integral support structure; Among them, the spherical hollow vibration isolation block (3) has a sealed intermediate cavity (31) inside, which is filled with vibration damping medium, so that the support has the dual functions of friction pendulum vibration isolation and fluid damping vibration reduction. The upper support plate (1) is assembled from multiple modular components. By detachably removing some of the modular components, the spherical hollow vibration damping block (3) can be exposed for maintenance, inspection or replacement without disconnecting the support from the main structure.

2. The maintainable friction pendulum vibration isolation bearing with vibration reduction function according to claim 1, characterized in that, The modular components of the upper support plate (1) include an upper support main plate (11), an upper support auxiliary plate (12), and a toothed support block (13). The two upper support main plates (11) are symmetrically and detachably assembled. The upper support auxiliary plate (12) is located at the end of the interface of the upper support main plate (11) and is detachably connected to the upper support main plate (11) to form the main support and tensile force transmission path. The toothed support block (13) is removably arranged between the upper support main plate (11) and the lower support plate (2) and is arranged in an anti-symmetrical manner with the upper support auxiliary plate (12) in the plane.

3. A maintainable friction pendulum vibration isolation bearing with vibration reduction function according to claim 2, characterized in that, The connecting plate (4) includes a main board interconnecting plate (41), a main and auxiliary support plate (42), and a main tooth support plate (43). The main board interconnecting plate (41) is used to connect two upper support main boards (11). The main and auxiliary support plate (42) is used to connect the upper support auxiliary part (12), the upper support plate (1), and the lower support plate (2). The main tooth support plate (43) is used to connect the upper support plate (1) and the lower support plate (2) and limit the tooth support block (13).

4. A maintainable friction pendulum isolation bearing with vibration reduction function according to claim 3, characterized in that, The top of the upper support main board (11) is connected to the building through embedded parts, and the bottom is provided with an upper groove (111) that matches the top of the spherical hollow vibration damping block (3). The interface end of the upper support main board (11) is provided with an upper support auxiliary slot (112) for accommodating the upper support auxiliary (12), and the bottom of the right angle end is provided with a toothed support block slot (113) for accommodating the toothed support block (13).

5. A maintainable friction pendulum isolation bearing with vibration reduction function according to claim 4, characterized in that, On the adjacent sides of the interfaces of the two upper support motherboards (11) after assembly, there are motherboard interconnection plate slots (114) for embedding the motherboard interconnection plate (41). The sides of the upper support motherboards (11) are also provided with main and auxiliary support plate slots (115) for embedding the main and auxiliary support plates (42) and main tooth support plate slots (116) for embedding the main tooth support plate (43).

6. A maintainable friction pendulum vibration isolation bearing with vibration reduction function according to claim 3, characterized in that, The bottom support plate (2) has a groove (21) at the top that matches the bottom of the spherical hollow vibration damping block (3), and the side of the bottom support plate (2) has a support plate groove (22) for embedding the main and auxiliary support plates (42) and the main tooth support plate (43).

7. A maintainable friction pendulum vibration isolation bearing with vibration reduction function according to claim 1, characterized in that, The spherical hollow vibration damping block (3) includes an upper hemispherical vibration damping block (32) and a lower vibration damping block (33). The two are fixedly connected and enclosed at the mating surface to form an intermediate cavity (31). A leak-proof filling membrane (34) is provided in the intermediate cavity (31), and a vibration damping medium injection pipe (35) communicating with the leak-proof filling membrane (34) is provided in the lower vibration damping block (33).

8. A maintainable friction pendulum vibration isolation bearing with vibration reduction function according to claim 7, characterized in that, The leak-proof filling membrane (34) is a closed, fluffy thick membrane with a double-layered pleated polytetrafluoroethylene or modified polytetrafluoroethylene film, and the middle interlayer is filled with glass fiber or rock wool.

9. A maintainable friction pendulum isolation bearing with vibration reduction function according to claim 7, characterized in that, The vibration damping medium injection pipe (35) has an inlet (36) connected to the leak-proof filling membrane (34) at one end near the middle cavity (31), and a check valve is installed inside it. The other end is connected to a sealing screw (37) by a thread.

10. A maintainable friction pendulum vibration isolation bearing with vibration reduction function according to claim 1, characterized in that, The vibration damping medium is a viscous fluid or gas.

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