Self-resetting fluid capacitive seismic isolation bearing

Abstract

This invention provides a self-resetting liquid inertial-capacitance seismic isolation bearing, comprising: a top plate, an intermediate plate, a bottom plate, a support ring, a flexible isolation body, an inertial container, a reset rod, and an elastic reset element. The reset rod passes through the inertial container and the intermediate plate, with its upper end connected to the top plate via the elastic reset element. The bottom plate has an arc-shaped groove, and the lower end of the reset rod contacts and engages with the arc-shaped groove. The inertial container includes a cylinder, a spiral tube, and a piston. A sealed cavity is formed within the cylinder and filled with working fluid. The piston divides the sealed cavity into an upper cavity and a lower cavity. The reset rod passes through and connects to the piston. The upper end of the spiral tube communicates with the upper cavity, and the lower end communicates with the lower cavity. By embedding the inertial container into the flexible isolation body, this invention achieves "high static strength and low dynamic stiffness," effectively expanding the damping frequency band and improving the seismic isolation effect. The liquid inertial container can increase the inertial mass and damping energy dissipation effect of the seismic isolation bearing, and it has a simple structure, high durability, and low cost.

Description

Technical Field

[0001] This invention relates to the field of seismic isolation structure technology, and in particular to a self-resetting liquid inertial capacitance seismic isolation bearing. Background Technology

[0002] Structural vibration control technology can effectively suppress the dynamic response of a structure under external excitations such as wind and earthquakes, reducing the damage caused by these external factors and ensuring the normal operation of the structure. Seismic isolation bearings, as a type of base isolation technology, can isolate a building from its foundation, preventing seismic loads from being directly transferred to the foundation through the building structure. At the same time, seismic isolation bearings allow the building structure to undergo relative displacement during an earthquake, thereby mitigating the impact of seismic loads and reducing the risk of earthquake damage.

[0003] Traditional seismic isolation bearings mainly include rubber bearings and friction bearings, with rubber bearings being the most common. Rubber bearings are made primarily of rubber and achieve seismic isolation, damping, and energy dissipation through the elastic deformation of the rubber and the combined action of other components (such as steel plates and damping elements). However, rubber bearings also have certain limitations. Their damping bandwidth and control effect are related to the stiffness of the bearing; that is, the lower the stiffness, the wider the damping bandwidth and the better the seismic isolation effect, but this can also lead to increased deformation of the isolation layer. Excessive deformation may cause the building structure to overturn due to eccentric loading. Summary of the Invention

[0004] This invention provides a self-resetting liquid inertial capacitance seismic isolation bearing that can achieve "high static strength and low dynamic stiffness", effectively expanding the damping frequency band of the seismic isolation bearing and improving the seismic isolation effect. This invention addresses the contradiction between the damping effect and the stiffness of existing seismic isolation bearings, namely, that although excessive stiffness can improve the damping effect, it can also lead to excessive deformation of the isolation layer, increasing the risk of building overturning.

[0005] The present invention provides a self-resetting liquid inertial capacitance seismic isolation bearing, comprising: a top plate, an intermediate plate, a bottom plate, a support ring, a flexible isolation body, an inertial container, a reset rod, and an elastic reset component.

[0006] The top plate, the intermediate plate, and the bottom plate are parallel to each other and spaced apart. The upper end of the support ring is connected to the top plate, and the lower end of the support ring is connected to the intermediate plate. The inertial container is located inside the support ring. The reset rod passes through the inertial container and the intermediate plate. The upper end of the reset rod is connected to the top plate through the elastic reset member. The top wall of the bottom plate is provided with an arc-shaped groove. The lower end of the reset rod contacts and engages with the arc-shaped groove. In the initial state, the lower end of the reset rod is located at the center of the arc-shaped groove, and the elastic reset member is in a pre-compression state.

[0007] The inertial container includes a cylinder, a spiral tube, and a piston. A sealed cavity is formed within the cylinder and filled with working fluid. The piston is located within the sealed cavity and divides the sealed cavity into an upper cavity and a lower cavity. The piston and the sealed cavity slide vertically together. A reset rod passes through the piston and is connected to the piston. The spiral tube is sleeved on the outer wall of the cylinder. The upper port of the spiral tube communicates with the upper cavity, and the lower port of the spiral tube communicates with the lower cavity.

[0008] The self-resetting liquid inertial capacitance vibration isolation bearing provided by the present invention further includes a guide rod and a limiting seat. One end of the guide rod is connected to the reset rod, and the limiting seat is disposed on the bottom wall of the top plate. The guide rod and the limiting seat slide in a vertical manner. In the initial state, there is a gap between the upper end of the guide rod and the bottom wall of the top plate, and the elastic reset member is sleeved on the limiting seat.

[0009] According to the self-resetting liquid inertial capacitance vibration isolation bearing provided by the present invention, the elastic reset element is a reset spring, and the reset spring is sleeved on the guide rod.

[0010] According to the self-resetting liquid inertial capacitance isolation bearing provided by the present invention, an inner cavity is formed within the flexible isolation body, and the inner cavity is used to limit the reset rod.

[0011] According to the self-resetting liquid capacitive vibration isolation bearing provided by the present invention, the diameter of the inner cavity is the same as the diameter of the arc-shaped groove.

[0012] According to the self-resetting liquid inertial capacitance vibration isolation bearing provided by the present invention, the lower end of the reset rod is provided with a ball head, and the ball head is in contact with the arc-shaped groove.

[0013] According to the self-resetting liquid capacitive vibration isolation bearing provided by the present invention, the surface of the arc-shaped groove is provided with a wear-resistant coating.

[0014] According to the self-resetting liquid capacitive seismic isolation bearing provided by the present invention, the wear-resistant coating is a chromium layer, a nickel layer, a zinc layer, an aluminum oxide layer, a silicon nitride layer, or a silicon carbide layer.

[0015] According to the self-resetting liquid inertial capacitance seismic isolation bearing provided by the present invention, the flexible seismic isolation body includes multiple flexible layers and multiple rigid layers, wherein the flexible layers and the rigid layers are alternately stacked.

[0016] According to the self-resetting liquid capacitive seismic isolation bearing provided by the present invention, the flexible layer is a rubber layer and the rigid layer is a steel plate layer.

[0017] The self-resetting liquid inertial capacity seismic isolation bearing provided by this invention can achieve "high static strength and low dynamic stiffness" by embedding a liquid inertial container into a flexible seismic isolation body, effectively expanding the damping frequency band and improving the seismic isolation effect. Compared with mechanical inertial containers, the liquid inertial container can add a certain amount of inertial mass and damping energy dissipation effect to the seismic isolation bearing, and has a simple structure, strong durability and low cost.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the self-resetting liquid capacitive seismic isolation bearing provided in an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Schematic diagram of the AA section.

[0022] Figure 3 yes Figure 2 A magnified view of part B in the diagram.

[0023] Figure 4 This is a schematic diagram of the inertial container in the self-resetting liquid inertial capacitive seismic isolation bearing provided in an embodiment of the present invention.

[0024] Figure label:

[0025] 10. Top plate; 110. Limiting seat; 20. Intermediate plate; 30. Bottom plate; 310. Arc-shaped groove; 40. Support ring; 50. Flexible isolation body; 510. Flexible layer; 520. Rigid layer; 530. Inner cavity; 60. Inertia container; 610. Cylinder; 620. Spiral tube; 630. Piston; 640. Sealed cavity; 70. Reset rod; 710. Ball head; 80. Elastic reset component; 90. Guide rod. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present 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 the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0029] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] The following is combined Figures 1 to 4 This invention describes a self-resetting liquid capacitive seismic isolation bearing.

[0032] See Figures 1 to 4 As shown, the self-resetting liquid inertial-capacitance seismic isolation bearing provided in this embodiment of the invention includes: a top plate 10, an intermediate plate 20, a bottom plate 30, a support ring 40, a flexible seismic isolation body 50, an inertial container 60, a reset rod 70, and an elastic reset member 80.

[0033] The top plate 10, the intermediate plate 20, and the bottom plate 30 are arranged parallel to each other and spaced apart. The upper end of the support ring 40 is connected to the top plate 10, and the lower end of the support ring 40 is connected to the intermediate plate 20. The inertial container 60 is located inside the support ring 40. The reset rod 70 passes through the inertial container 60 and the intermediate plate 20. The upper end of the reset rod 70 is connected to the top plate 10 through the elastic reset member 80. The inner wall of the bottom plate 30 is provided with an arc-shaped groove 310. The lower end of the reset rod 70 contacts and engages with the arc-shaped groove 310. In the initial state, the lower end of the reset rod 70 is located at the center of the arc-shaped groove 310, and the elastic reset member 80 is in a pre-compression state.

[0034] The inertial container 60 includes a cylinder 610, a spiral tube 620, and a piston 630. A sealed cavity 640 is formed inside the cylinder 610 and is filled with working fluid. The piston 630 is located inside the sealed cavity 640 and divides the sealed cavity 640 into an upper cavity and a lower cavity. The piston 630 and the sealed cavity 640 slide vertically together. A reset rod 70 passes through the piston 630 and is connected to the piston 630. The spiral tube 620 is sleeved on the outer wall of the cylinder 610. The upper port of the spiral tube 620 communicates with the upper cavity, and the lower port of the spiral tube 620 communicates with the lower cavity.

[0035] The self-resetting liquid inertial capacitance seismic isolation bearing provided by this invention achieves "high static strength and low dynamic stiffness" by embedding a liquid inertial container 60 into a flexible seismic isolator 50, effectively expanding the damping frequency band and improving the seismic isolation effect. Compared with a mechanical inertial container 60, the liquid inertial container 60 can add a certain amount of inertial mass and damping energy dissipation effect to the seismic isolation bearing, and has a simple structure, strong durability, and low cost. The working fluid can be silicone oil, polymer solution, or hydraulic oil. Among them, silicone oil has stable chemical properties, high temperature resistance (-50℃ to 200℃), small viscosity change with temperature, stable performance, flame retardancy, aging resistance, and long service life; polymer solution can adjust the damping characteristics by adjusting the polymer type and concentration, and is suitable for special needs; hydraulic oil has a high viscosity coefficient and can provide large damping force.

[0036] Specifically, seismic isolation bearings should be applicable to the construction industry, and when used, they should be placed between the foundation and the main structure of the building. When the seismic isolation bearing is subjected to shear force under horizontal seismic action, the intermediate plate 20 and the bottom plate 30 undergo horizontal relative displacement, which in turn causes the flexible seismic isolation body 50 to undergo horizontal deformation and displacement. The lower end of the reset rod 70 moves outward from its initial position (the center of the arc-shaped groove 310). During this process, the reset rod 70 is restricted from moving upward by the connecting hole of the intermediate plate 20, and its upper end compresses the elastic reset member 80. The reaction force generated when the elastic reset member 80 deforms can provide a vertical restoring force for the reset rod 70, thereby driving the reset rod 70 to quickly self-reset and increasing the friction between the bottom end of the reset rod 70 and the arc-shaped groove 310 to hinder the horizontal relative displacement of the seismic isolation bearing. At the same time, the reset rod 70 can also drive the piston 630 in the sealed cavity 640 to move upward. In the sealed cavity 640, the working fluid circulates between the upper cavity, the spiral tube 620 and the lower cavity under the driving action of the piston 630. The reset rod 70 is subjected to a damping force in the opposite direction of movement. After the horizontal earthquake action ends, the flexible seismic isolation body 50 and the elastic reset member 80 can restore the seismic isolation support to its initial state through their own elastic restoring force.

[0037] The top plate 10, intermediate plate 20, and bottom plate 30 are parallel to each other and spaced vertically. The upper end of the support ring 40 is connected to the bottom wall of the top plate 10 (e.g., by welding or using threaded connectors), and the lower end of the support ring 40 is connected to the top wall of the intermediate plate 20 (e.g., by welding or using threaded connectors). The inertia container 60 is located inside the support ring 40 and is protected by a spiral tube 620 wound around the outer wall of the cylinder 610 of the support ring 40. This prevents damage to the spiral tube 620 during the construction and installation of the seismic isolation bearing, thus preventing the internal working fluid from leaking out and effectively ensuring the vibration reduction effect of the seismic isolation bearing. The flexible seismic isolation body 50 is located between the intermediate plate 20 and the bottom plate 30, forming a stable frame structure for the seismic isolation bearing. The top plate 10, intermediate plate 20, bottom plate 30, and support ring 40 can all be made of high-strength materials (such as steel).

[0038] The reset rod 70 passes through the cylinder 610, piston 630, and intermediate plate 20 of the inertial container 60. In practice, a through hole matching the outer diameter of the reset rod 70 can be made at the center of the cylinder 610, piston 630, and intermediate plate 20 of the inertial container 60, and a sealing ring can be installed at the location requiring a sealed connection. Similarly, the reset rod 70 can also be made of a high-strength material (such as steel). The elastic reset component 80 can be a reset spring, reset pad, or other device with elastic reset function.

[0039] See Figure 4 As shown, the inertia container 60 is a liquid inertia container 60, which includes a cylinder 610, a spiral tube 620, and a piston 630. A sealed cavity 640 is formed within the cylinder 610, and a channel for the working fluid to flow is formed within the spiral tube 620. The principle is that when the piston 630 moves within the sealed cavity 640, it drives the working fluid in the upper and lower cavities through the outer spiral tube 620 to achieve a hydraulic mechanism. Since the inner diameter of the spiral tube 620 is much smaller than the inner diameter of the cylinder 610, the fluid velocity within the spiral tube 620 is amplified compared to the piston 630. By increasing the area of ​​the piston 630 or decreasing the cross-sectional area of ​​the spiral tube 620, the inertial mass of the liquid inertia container 60 can be amplified, effectively increasing the added mass in the structure and producing a mass amplification effect to achieve structural vibration reduction. By setting up the spiral tube 620, the distance the liquid travels is greatly increased, thereby increasing the duration of the damping force and the friction between the liquid and the spiral tube 620, thus improving the damping and energy dissipation effects.

[0040] On the other hand, the liquid flow in the liquid inertia container 60 will generate inertia. The negative stiffness, of which For the excitation frequency, The inertial capacitance value is expressed as follows.

[0041] ;

[0042] In the formula: The cross-sectional area of ​​cylinder block 610 is... The cross-sectional area of ​​the spiral pipe 620 is... For the density of the liquid, The length of the spiral tube is 620.

[0043] Because the cross-sectional area of ​​piston 630 is much larger than the cross-sectional area of ​​helical tube 620, and helical tube 620 has a certain length, the inertial capacity of liquid inertial container 60 is large, and the "negative stiffness" effect is significant. This negative stiffness is related to the excitation frequency; that is, negative stiffness only occurs when the fluid moves at a certain frequency.

[0044] When the seismic isolation bearing is subjected to shear force under horizontal seismic loading, the horizontal relative displacement between the intermediate plate 20 and the bottom plate 30 causes horizontal deformation and displacement of the flexible isolation body 50. The reset rod 70 moves upward under the action of the arc-shaped groove 310, simultaneously driving the piston 630 to move up and down, thus driving the liquid flow and achieving the purpose of embedding the seismic isolation bearing into the liquid inertial container 60. This achieves "high static stiffness and low dynamic stiffness," meaning higher horizontal stiffness at low frequencies and lower horizontal stiffness at high frequencies. Unlike the positive stiffness of traditional rubber isolation layers, the horizontal stiffness of this device dynamically adjusts with the excitation frequency, effectively expanding the damping bandwidth and improving the seismic isolation effect.

[0045] After the horizontal earthquake action ends, the flexible isolation body 50 and the elastic reset member 80 restore the isolation support to its initial state through their own elastic restoring force, thus realizing the self-reset function.

[0046] See Figure 2 and Figure 3 As shown, according to some embodiments of the present invention, the self-resetting liquid inertial capacitance isolation bearing further includes a guide rod 90 and a limiting seat 110. One end of the guide rod 90 is connected to the reset rod 70, and the limiting seat 110 is disposed on the bottom wall of the top plate 10. The guide rod 90 and the limiting seat 110 slide in a vertical manner. In the initial state, there is a gap between the upper end of the guide rod 90 and the bottom wall of the top plate 10, and the elastic reset member 80 is sleeved on the limiting seat 110.

[0047] By setting the guide rod 90 and the limiting seat 110, when the bottom of the reset rod 70 moves outward from the center of the arc-shaped groove 310, it can drive the guide rod 90 to move upward. Since the guide rod 90 and the limiting seat 110 slide in a vertical manner, and in the initial state, there is a gap between the upper end of the guide rod 90 and the bottom wall of the top plate 10, the elastic reset member 80 can apply a force in the opposite direction to the reset rod 70. At the same time, it can also ensure that the elastic force applied by the elastic reset member 80 to the reset rod 70 is always kept in the axial direction, preventing the elastic force of the elastic reset member 80 from deviating from the axial direction.

[0048] Specifically, the limiting seat 110 has an inner hole adapted to the guide rod 90. The depth of the inner hole is greater than the length of the guide rod 90, so that there is a gap between the upper end of the guide rod 90 and the bottom wall of the top plate 10 in the initial state, so that the reset rod 70 and the guide rod 90 can move vertically. The elastic reset member 80 is sleeved on the outer wall of the limiting seat 110 for limiting and fixing it, and preventing the elastic force of the elastic reset member 80 from deviating from the axial direction.

[0049] See Figure 2 As shown, according to some embodiments of the present invention, the elastic reset member 80 is a reset spring, which is sleeved on the guide rod 90.

[0050] By selecting a return spring as the elastic return element 80, a stable elastic restoring force can be provided, enabling the structure to quickly return to its original position after being subjected to external excitation. Secondly, the return spring has good adjustability, and the magnitude of the return force can be precisely controlled by adjusting the stiffness of the spring. In addition, the return spring has a simple structure, low cost, and good durability, and can maintain stable working performance for a long time.

[0051] Preferably, a steel spring with a high elastic modulus can be used as the return spring to further improve the spring's stiffness and restoring force. The high elastic modulus of steel springs enables them to generate strong restoring ability under large deformations, thus ensuring that the structure can quickly and effectively return to its original position after being subjected to external excitation.

[0052] See Figure 2 As shown, according to some embodiments of the present invention, a cavity 530 is formed inside the flexible isolation body 50, and the cavity 530 is used to limit the reset rod 70.

[0053] By setting an inner cavity 530 within the flexible seismic isolation body 50, the reset rod 70 can be effectively limited to prevent excessive displacement or offset under seismic action. It can also provide additional control, enabling the reset rod 70 to maintain good recovery performance and safety under seismic action.

[0054] See Figure 2 As shown, according to some embodiments of the present invention, the diameter of the inner cavity 530 is the same as the diameter of the arcuate groove 310.

[0055] By setting the diameter of the inner cavity 530 to be the same as the diameter of the arc-shaped groove 310, the bottom of the reset rod 70 can be confined within the arc-shaped groove 310, preventing it from coming out of the arc-shaped groove 310 and thus failing to reset.

[0056] See Figure 2 As shown, according to some embodiments of the present invention, the lower end of the reset rod 70 is provided with a ball head 710, which contacts and engages with the arc-shaped groove 310.

[0057] By setting a ball head 710 at the lower end of the reset rod 70, when the seismic isolation bearing is subjected to shear force under horizontal seismic action, the lower end of the reset rod 70 can easily move outward along the center of the arc groove 310 to offset the horizontal shear force generated by the earthquake. After the seismic action disappears, the ball head 710 structure can more easily return to the center position of the arc groove 310, which facilitates the overall reset of the seismic isolation bearing.

[0058] Specifically, the ball head 710 can be connected to the lower end of the reset rod 70 by welding, or the reset rod 70 and the ball head 710 can be integrated into one piece.

[0059] According to some embodiments of the present invention, the surface of the arc-shaped groove 310 is provided with a wear-resistant coating.

[0060] By applying a wear-resistant coating to the surface of the arc-shaped groove 310, the frictional performance and durability between the bottom of the reset rod 70 and the arc-shaped groove 310 can be significantly improved. The wear-resistant coating can reduce the wear generated by the arc-shaped groove 310 during sliding, thereby extending its service life.

[0061] Specifically, the wear-resistant coating can be applied to the surface of the arc-shaped groove 310 by means of electroplating, spraying, thermal spraying, chemical deposition, etc.

[0062] As examples, wear-resistant coatings can be chromium, nickel, zinc, alumina, silicon nitride, or silicon carbide layers. These wear-resistant coatings offer good wear resistance and service life, effectively improving the surface's anti-wear properties. For instance, chromium and nickel layers provide high hardness and excellent corrosion resistance, suitable for general friction environments; zinc layers are primarily used for corrosion protection, especially in humid environments; alumina layers have extremely high hardness, suitable for applications requiring high wear resistance and heat resistance; and silicon nitride and silicon carbide layers, due to their excellent high-temperature resistance and wear resistance, are often used in environments subject to extreme friction and high pressure.

[0063] In practice, selecting the appropriate coating based on different working conditions can significantly extend the service life of the equipment and improve its performance.

[0064] See Figure 2 As shown, according to some embodiments of the present invention, the flexible isolation body 50 includes a plurality of flexible layers 510 and a plurality of rigid layers 520, wherein the flexible layers 510 and the rigid layers 520 are alternately stacked.

[0065] By configuring the flexible isolation body 50 as including multiple alternating layers of flexible layers 510 and rigid layers 520, when the isolation bearing is subjected to shear force under horizontal seismic action, the layered flexible layers 510 and rigid layers 520 can undergo horizontal deformation and displacement. While absorbing the shear force, it allows horizontal relative displacement between the intermediate plate 20 and the bottom plate 30, enabling the ball head 710 to move outward from the center position of the arc-shaped groove 310. The piston 630 is driven to move upward through the reset rod 70, thereby applying a damping force in the opposite direction to the reset rod 70 using the inertial container 60.

[0066] Preferably, the flexible layer 510 can be a rubber layer, which can effectively absorb seismic forces due to its excellent elasticity and cushioning properties; while the rigid layer 520 can be a steel plate layer, whose hardness and strength can provide the required support and stability, enhancing the overall structure's durability and seismic performance.

[0067] Specifically, the alternating layers of rubber and steel plates can be bonded together by high-temperature vulcanization, and the upper and lower ends of the flexible isolation body 50 can be bonded to the intermediate plate 20 and the bottom plate 30 respectively.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-resetting liquid capacitive seismic isolation bearing, characterized in that, include: Top plate, intermediate plate, bottom plate, support ring, flexible isolation body, inertia container, reset rod and elastic reset component; The top plate, the intermediate plate, and the bottom plate are parallel to each other and spaced apart. The upper end of the support ring is connected to the top plate, and the lower end of the support ring is connected to the intermediate plate. The flexible isolation body is disposed between the intermediate plate and the bottom plate, and the upper and lower ends of the flexible isolation body are respectively connected to the intermediate plate and the bottom plate. The inertia container is located inside the support ring. The reset rod passes through the inertia container and the intermediate plate. The upper end of the reset rod is connected to the top plate through the elastic reset member. The top wall of the bottom plate is provided with an arc-shaped groove. The lower end of the reset rod contacts and engages with the arc-shaped groove. In the initial state, the lower end of the reset rod is located at the center of the arc-shaped groove, and the elastic reset member is in a pre-compression state. The inertial container includes a cylinder, a spiral tube, and a piston. A sealed cavity is formed inside the cylinder and filled with working fluid. The piston is located inside the sealed cavity and divides the sealed cavity into an upper cavity and a lower cavity. The piston and the sealed cavity slide vertically together. A reset rod passes through the piston and is connected to the piston. The spiral tube is sleeved on the outer wall of the cylinder. The upper port of the spiral tube communicates with the upper cavity, and the lower port of the spiral tube communicates with the lower cavity. It also includes a guide rod and a limiting seat. One end of the guide rod is connected to the reset rod. The limiting seat is located on the bottom wall of the top plate. The guide rod and the limiting seat slide vertically together. In the initial state, there is a gap between the upper end of the guide rod and the bottom wall of the top plate. The elastic reset member is sleeved on the limiting seat. The flexible isolation body has an inner cavity, which is used to limit the position of the reset rod; The flexible isolation body includes multiple flexible layers and multiple rigid layers, which are alternately stacked.

2. The self-resetting liquid inertial capacitance seismic isolation bearing according to claim 1, characterized in that, The elastic reset component is a reset spring, which is sleeved on the guide rod.

3. The self-resetting liquid inertial capacitance seismic isolation bearing according to claim 1, characterized in that, The diameter of the inner cavity is the same as the diameter of the arc-shaped groove.

4. The self-resetting liquid inertial capacitance seismic isolation bearing according to claim 1, characterized in that, The lower end of the reset rod is provided with a ball head, which contacts and engages with the arc-shaped groove.

5. The self-resetting liquid capacitive seismic isolation bearing according to claim 1, characterized in that, The surface of the arc-shaped groove is coated with a wear-resistant coating.

6. The self-resetting liquid inertial capacitance seismic isolation bearing according to claim 5, characterized in that, The wear-resistant coating is a chromium layer, a nickel layer, a zinc layer, an aluminum oxide layer, a silicon nitride layer, or a silicon carbide layer.

7. The self-resetting liquid capacitive seismic isolation bearing according to claim 1, characterized in that, The flexible layer is a rubber layer, and the rigid layer is a steel plate layer.

Images