A nested multifunctional shock-isolation rubber bearing

Abstract

The invention discloses a nested multifunctional vibration-isolation rubber bearing, which comprises a vertical vibration-isolation component and a horizontal vibration-isolation component embedded in the vertical vibration-isolation component; the vertical vibration-isolation component adopts thick laminated rubber , directly bear the vertical load of the superstructure, and provide the vertical low stiffness required for isolating environmental vibrations; the horizontal vibration isolation component uses thin laminated rubber, which can cooperate with the vertical vibration isolation component to generate horizontal shear deformation, providing The horizontal restoring force and damping required to isolate the earthquake action; the horizontal shock-isolation component does not directly bear the upper vertical load, and provides anti-buckling restraint for the high-flexibility vertical vibration-isolation component, avoiding the high-flexibility vibration-isolation support Seat rollover or buckling instability. The nested multifunctional shock-isolation rubber bearing of the present invention can not only isolate environmental vibrations, but also isolate earthquakes, and has high deformation stability at the same time.

Description

technical field [0001] The invention relates to a support, in particular to a nested multifunctional vibration-isolation rubber support. Background technique [0002] With the process of urbanization and the rapid development of modern industry, all kinds of rail and highway traffic are becoming more and more dense, and there are more and more production activities with exciting effects. The comfort level of facilities, and it will cause long-term cumulative damage or fatigue of old structures, historical buildings and valuables, or affect the normal use of instruments and equipment. At the same time, the potential earthquake risk also threatens the safety of these facilities and equipment. The use of seismic isolation technology is an effective way to solve the above problems, and the seismic isolation support is a necessary part of the implementation of seismic isolation technology. To comprehensively solve the above problems, the seismic isolation support used must have b...

AI Technical Summary

Problems solved by technology

[0005] (1) The vertical seismic isolation part and the horizontal seismic isolation part in this kind of three-dimensional seismic isolation bearing adopt the form of stacking vertically in series. Therefore, the two bear the same superstructure load, and the allowable surface pressure of the two However, it is often different. For example, the permissible surface pressure of thick-meat rubber is much smaller than that of traditional thin-layer rubber, so that the design of the shock-isolation bearing or the small surface pressure design results in material waste and sacrifices horizontal isolation. shock effect, or use a large support part in series with a small support part to form a strong punching effect on the large support part

[0006] (2) Since the vertical isolation part of this type of three-dimensional isolation bearing is independent, it is necessary to add a rigid limit device in the horizontal direction to completely limit its horizontal shear deformation. The support must overcome the vertical static friction force to produce vibration isolation motion. Therefore, the tiny environmental vibration will be transmitted through the rigid contact, so that its vibration isolation effect on environmental vibration is significantly reduced or even invalid.

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