A vibration-isolation rubber bearing

Abstract

A shock-isolation rubber bearing, which is composed of a rubber rubber layer, a stiffened steel plate, a protective rubber layer, a sealing layer steel plate and a support connecting steel plate, and the cylindrical space surrounded by the protective rubber layer is provided with alternating rubber rubber layers and stiffened steel plates. Filled laminated rubber body, the upper and lower ends of the laminated rubber body are respectively provided with sealing steel plates that seal the two ends of the protective rubber layer, and the multi-layer rubber rubber layer is combined by a specific arrangement. The specific arrangement The method is one of sequential arrangement, alternate arrangement or symmetrical arrangement; through the use of different rubber materials, each adhesive layer can achieve vibration reduction characteristics, high damping characteristics, shear characteristics, high load-bearing characteristics, etc. function, and the use of each adhesive layer can realize the performance coordination of the overall support, which can not only have both elasticity and damping performance, but also ensure the coordination of vertical load-bearing performance and horizontal shear performance. At the same time, it has multiple damping peaks to ensure the support The seat has good environmental adaptability and durability.

Description

technical field [0001] The invention relates to a rubber bearing, in particular to a shock-isolation rubber bearing. Background technique [0002] Isolation rubber bearings are rubber bearings used for seismic isolation of houses, bridges or other structures in earthquake areas, including natural rubber bearings (LNR), lead rubber bearings (LRB) and high damping rubber bearings (HDR) , the main structure is integrally vulcanized by laminated rubber and stiffened steel plates. The upper and lower structures are connected by sealing steel plates and connecting steel plates, which can effectively reduce the effect of structural seismic force. It has been applied in many engineering projects in recent years. [0003] The vibration-isolation rubber bearing needs to have good vertical bearing capacity, horizontal shear performance, self-resetting performance and damping energy dissipation characteristics, as well as good environmental adaptability and durability. In order to achi...

AI Technical Summary

Problems solved by technology

The higher the damping of the rubber material, the greater the energy consumption and the greater the heat generation, which will cause the molecular chain to break and accelerate the aging of the rubber, and the durability is poor; reducing the damping and improving the elasticity of the rubber material can improve the reset performance of the bearing and reduce permanent deformation, but Will not be able to guarantee energy consumption and shock isolation effect

[0005] (2) Insufficient temperature adaptability of a single rubber material

However, as a result of such modification, the overall properties of the rubber material, especially the mechanical properties, will often be reduced.

This is because when two or more types of rubber are blended and modified, the vulcanization time, vulcanization speed and vulcanization degree cannot be well matched when different materials are co-vulcanized, so there are few practical applications.

[0006] (3) The same kind of rubber has insufficient adaptability when meeting the vertical load-bearing and horizontal shear properties

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