Multi-layer rubber steel plate composite three-dimensional shock insulation support

Abstract

The utility model discloses a multi-layer rubber steel plate composite three-dimensional shock insulation support which comprises a hollow steel seat, a rubber bottom plate concentrically installed at the bottom end of the hollow steel seat in a sleeved mode and a steel cylinder installed at the top end of the rubber bottom plate in an inserted connection mode, and the top end of the steel cylinder penetrates out of the hollow steel seat and is sequentially provided with a steel plate body and an upper rubber plate in an overlapped mode. A top table is installed on the upper surface of the upper rubber plate, and a plurality of protruding columns extending into the steel cylinder are integrally formed at the bottom end of the top table. The at least two hydraulic dampers used for being connected with the convex columns at the lower end of the upper rubber plate are installed in the steel cylinder, the hydraulic dampers can absorb a large amount of vibration energy under the action of an earthquake, the strength of vibration transmitted to an upper structure is reduced, and the support can achieve multi-point energy dissipation. And the vibration control is more balanced and comprehensive.

Description

Multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing Technical Field

[0001] This utility model relates to the field of seismic isolation bearing technology, specifically a multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing. Background Technology

[0002] Three-dimensional seismic isolation bearings made of rubber and steel plates play a crucial role in seismic protection in modern buildings. They combine the elasticity of rubber with the rigidity of steel plates to form a multi-layered composite structure, effectively isolating seismic energy and mitigating the transmission of vibrations to the building structure, thereby improving the building's seismic performance. This type of bearing consists of rubber layers, steel plate layers, connectors, and a sealing protective layer, possessing excellent elastic deformation capacity and high load-bearing capacity. During an earthquake, it first responds to the seismic waves, absorbing some of the vibration energy through the elastic deformation of the rubber, converting the vibration energy into heat or other forms, reducing the amplitude of the vibration, lowering structural stress, and protecting the integrity of the building structure. Its multi-directional seismic isolation capability adapts to complex seismic waveforms, significantly reducing the vibration response of buildings and preventing structural damage and casualties. However, current three-dimensional seismic isolation bearings are structures of sequentially stacked rubber and steel plates, relying on the elasticity and damping characteristics of the materials to dissipate energy. Their damping effect is limited and relatively linear. Furthermore, there is no cavity between the stacked rubber and steel plates, preventing the addition of hydraulic damping elements, and the structure is limited by compatibility and spatial layout constraints. Summary of the Invention

[0003] The purpose of this utility model is to provide a multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing, in which a rubber base plate, a steel cylinder, a steel plate and an upper rubber plate are installed sequentially from bottom to top inside the hollow steel base, and at least two hydraulic dampers for connecting to the protruding column at the lower end of the upper rubber plate are installed inside the steel cylinder, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing, comprising a hollow steel base, a rubber base plate concentrically mounted at the bottom of the hollow steel base, and a steel cylinder inserted into the top of the rubber base plate. The top of the steel cylinder extends through to the outside of the hollow steel base, and a steel plate body and an upper rubber plate are sequentially stacked thereon. A top platform is installed on the upper surface of the upper rubber plate, and several protrusions extending into the interior of the steel cylinder are integrally formed at the bottom of the top platform. Several hydraulic dampers are installed at the bottom of the steel cylinder, and the top of the piston rod of the hydraulic damper is connected to the lower end of the protrusion.

[0005] Preferably, the hollow steel base has an integrally formed outwardly flared edge on the outer wall of the open end, and the upper surface of the outwardly flared edge is in contact with the lower surface of the steel plate body.

[0006] Preferably, the interior of the steel cylinder is provided with a cavity for accommodating multiple hydraulic dampers.

[0007] Preferably, a plurality of anti-deviation support structures are installed at equal intervals in a ring at the edge of the top of the hollow steel base. The anti-deviation support structure is a solid steel column welded and installed at the edge of the top of the hollow steel base, and the top of the solid steel column extends to the outside of the outer edge.

[0008] Preferably, a concave hole concentric with the solid steel column is provided at the edge of the bottom end of the top platform, and a flat steel spring is installed on the top wall of the concave hole.

[0009] Preferably, the lower end of the protruding post has an external threaded groove on its outer peripheral surface, and a nut is installed on the external threaded groove.

[0010] Compared with existing technologies, the beneficial effects of this utility model are as follows: This multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing has a rubber base plate, a steel cylinder, a steel plate, and an upper rubber plate installed sequentially from bottom to top inside a hollow steel base. At least two hydraulic dampers are installed inside the steel cylinder for connection to the lower protruding columns of the upper rubber plate. These hydraulic dampers can absorb a large amount of seismic energy under seismic action, reducing the intensity of the seismic energy transmitted to the superstructure. This allows the bearing to achieve multi-point energy dissipation, resulting in more balanced and comprehensive vibration control. This multi-point configuration not only improves the damping effect but also allows for adjustments based on different earthquake intensities and vibration levels. The dynamic characteristics allow the damping parameters of each damper to be adjusted automatically, thereby achieving dynamic adjustment and enhancing the adaptability of the support. Secondly, the rubber base plate and upper rubber plate provide the elastic deformation capacity of the foundation, ensuring flexible seismic isolation under light vibrations or normal loads. The steel cylinder and steel plate give the structure the necessary stiffness and load-bearing capacity, ensuring the stability of the structure during strong earthquakes. The introduction of hydraulic dampers enables the support to achieve optimal energy dissipation and stiffness adjustment under different vibration intensities. Especially in high-intensity earthquakes, hydraulic dampers can respond quickly, providing additional damping force to avoid excessive structural vibration and reduce the risk of damage. Attached Figure Description

[0011] Figure 1 is a three-dimensional structural schematic diagram of this utility model;

[0012] Figure 2 is a three-dimensional structural schematic diagram of this utility model;

[0013] Figure 3 is a schematic diagram of the three-dimensional cross-sectional structure of this utility model;

[0014] Figure 4 is a schematic diagram of the three-dimensional cross-sectional structure of this utility model;

[0015] Figure 5 is a schematic diagram of the three-dimensional structure of the top platform of this utility model.

[0016] In the diagram: 1. Hollow steel base; 101. Outwardly flared edge; 2. Rubber base plate; 3. Steel cylinder; 301. Cavity; 4. Steel plate body; 5. Upper rubber plate; 6. Top platform; 7. Protruding column; 701. External threaded groove; 702. Nut; 8. Hydraulic damper; 9. Anti-deviation support structure; 901. Solid steel column; 902. Upper concave hole; 903. Flat steel spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Example 1, as shown in Figures 1 to 5, includes a hollow steel base 1, a rubber base plate 2 concentrically mounted at the bottom of the hollow steel base 1, and a steel cylinder 3 inserted at the top of the rubber base plate 2. The top of the steel cylinder 3 extends through to the outside of the hollow steel base 1 and is sequentially stacked with a steel plate body 4 and an upper rubber plate 5. A top platform 6 is installed on the upper surface of the upper rubber plate 5. Several protrusions 7 are integrally formed at the bottom of the top platform 6 and extend into the interior of the steel cylinder 3. Several hydraulic dampers 8 are installed at the bottom of the steel cylinder 3. The top of the piston rod of the hydraulic damper 8 is connected to the lower end of the protrusion 7.

[0019] The vibration energy of the protruding column 7 is transmitted to the hydraulic damper 8 in the steel cylinder 3. The hydraulic damper 8 converts the remaining vibration energy into heat energy through nonlinear damping characteristics, thus achieving efficient energy dissipation and vibration mitigation.

[0020] The hollow steel base 1 has an integrally formed outer expansion edge 101 on the outer wall of the open end. The upper surface of the outer expansion edge 101 is in contact with the lower surface of the steel plate body 4. The outer expansion edge 101 is used to provide basic support for the steel plate body 4, the upper rubber plate 5 and the top platform 6.

[0021] When assembling the support, the workers concentrically fit the hollow steel base 1 and the rubber base plate 2 so that the rubber base plate 2 is located at the bottom of the hollow steel base 1, and the steel cylinder 3, steel plate body 4, upper rubber plate 5, and top platform 6 are sequentially stacked on the upper end of the rubber base plate 2.

[0022] The interior of the steel cylinder 3 is provided with a cavity 301 for accommodating multiple hydraulic dampers 8. The bottom of the steel cylinder 3 is installed at the bottom of the cylinder of the hydraulic damper 8, and the top of the piston rod of the hydraulic damper 8 is connected to the bottom of the protrusion 7 so that the hydraulic damper 8 can receive structural vibrations from the top platform 6, the upper rubber plate 5, and the steel plate body 4.

[0023] Several anti-deviation support structures 9 are installed at equal intervals in a ring at the top edge of the hollow steel base 1. The anti-deviation support structure 9 is a solid steel column 901 welded and installed at the top edge of the hollow steel base 1. The top of the solid steel column 901 extends to the outside of the outer expansion edge 101. An upper concave hole 902 concentric with the solid steel column 901 is provided at the bottom edge of the top platform 6. A flat steel spring 903 is installed on the top wall of the upper concave hole 902. The top of the solid steel column 901 extends to the outside of the outer expansion edge 101 and the steel plate body 4. The solid steel column 901 further improves the Z-axis rigidity of the hollow steel base 1 and the outer expansion edge 101.

[0024] In Example 2, based on Example 1, as shown in Figures 3 and 5, an external threaded groove 701 is provided on the lower outer circumferential surface of the protruding post 7, and a nut 702 is installed on the external threaded groove 701. In order to operate the nut 702, hollow parts need to be opened on the front and rear outer walls of the hollow steel base 1 and the steel cylinder 3, so that the rubber base plate 2 and the upper rubber plate 5 can be further tightened by the nut 702.

[0025] In this embodiment, the hollow steel base 1 serves as the core of the seismic isolation bearing, possessing excellent structural support strength. When seismic vibrations are transmitted, the elastic deformation of the rubber base plate 2 and the upper rubber plate 5 absorbs some of the vibration energy, reducing the transmission of vibration intensity. Furthermore, the rubber base plate 2, as the first elastic buffer layer of the seismic isolation bearing, undergoes elastic displacement under seismic action, absorbing and dissipating some of the vibration energy. Above the rubber base plate, the steel cylinder 3 and the steel plate body 4 together form a support and rigidity transmission frame. The steel cylinder 3, as the intermediate support element of the structure, has high load-bearing capacity and a certain elastic deformation capacity. The deformation of the steel cylinder 3 gradually transmits the vibration energy to the upper structure. Under the action of the steel plate body 4, the stiffness of the entire bearing is adjusted, ensuring that the structure does not rupture during vibration. Excessive deformation occurs; the upper rubber plate 5, as the final elastic layer of the seismic isolation bearing, is located between the upper damping structure and the seismic isolation bearing. The elastic deformation of the upper rubber plate 5 absorbs the vibration energy again, slowing down the speed and intensity of the vibration transmitted to the upper structure and protecting the building structure from severe damage. In the high-energy stage of seismic vibration, multiple hydraulic dampers 8 inside the steel cylinder 3 convert the vibration energy into the kinetic and thermal energy of the internal fluid through their nonlinear damping characteristics, thereby achieving efficient energy dissipation. The adjustment capability of the hydraulic dampers 8 allows them to exert the best damping effect under different magnitudes, reducing the duration and amplitude of the vibration. Thus, as the vibration gradually decays, the various components of the seismic isolation bearing continuously absorb and dissipate the vibration energy, ensuring that the upper structure remains relatively stable and safe under strong earthquake action.

Claims

1. A multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing, characterized in that: The device includes a hollow steel base (1), a rubber base plate (2) concentrically mounted on the bottom of the hollow steel base (1), and a steel cylinder (3) inserted into the top of the rubber base plate (2). The top of the steel cylinder (3) extends through to the outside of the hollow steel base (1) and a steel plate body (4) and an upper rubber plate (5) are installed in sequence. A top platform (6) is installed on the upper surface of the upper rubber plate (5). Several protruding columns (7) integrally formed at the bottom of the top platform (6) extend into the interior of the steel cylinder (3). Several hydraulic dampers (8) are installed at the bottom of the steel cylinder (3). The top of the piston rod of the hydraulic damper (8) is connected to the lower end of the protruding column (7).

2. The multi-layered rubber-steel plate composite three-dimensional seismic isolation bearing according to claim 1, characterized in that: The hollow steel base (1) has an integrally formed outer flank (101) on the outer wall of the open end, and the upper surface of the outer flank (101) is in contact with the lower surface of the steel plate body (4).

3. The multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing according to claim 1, characterized in that: The steel cylinder (3) has a cavity (301) inside for accommodating multiple hydraulic dampers (8).

4. The multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing according to claim 1, characterized in that: Several anti-deviation support structures (9) are installed at equal intervals in a ring at the edge of the top of the hollow steel base (1). The anti-deviation support structure (9) is a solid steel column (901) welded and installed at the edge of the top of the hollow steel base (1). The top of the solid steel column (901) extends to the outside of the outer expansion edge (101).

5. The multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing according to claim 4, characterized in that: The top platform (6) has an upper recessed hole (902) concentric with the solid steel column (901) at the bottom edge position, and a flat steel spring (903) is installed on the top wall of the upper recessed hole (902).

6. The multi-layer rubber-steel plate composite three-dimensional seismic isolation bearing according to claim 1, characterized in that: The lower end of the protrusion (7) is provided with an external thread groove (701), and a nut (702) is installed on the external thread groove (701).

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