Self-adaption stiffness characteristic motion decoupling three-dimensional earthquake/vibration isolation support

Abstract

The invention relates to a self-adaption stiffness characteristic motion decoupling three-dimensional earthquake/vibration isolation support. The support mainly includes an upper connecting plate, anintermediate plate, a lower connecting plate, a disc spring, a compression spring, pre-pressing springs, a laminated lead core rubber bearing and viscous dampers. The upper connecting plate, the intermediate plate and the lower connecting plate are made of high-strength low-carbon steel and have high bearing capacity. The upper connecting plate and the intermediate plate are engaged with each other to play a motion guiding role. The disc spring, the compression spring, the pre-pressing springs, the laminated lead core rubber bearing and the viscous dampers together form a vertical earthquake/vibration isolation system. The laminated lead core rubber bearing, the pre-pressing springs and the viscous dampers form a horizontal earthquake/vibration isolation system. The invention belongs to apassive self-adaption vibration control method, can be used for buildings affected by environmental vibration, and can isolate seismic oscillation while isolating the environment vibration.

Description

technical field [0001] The invention relates to a motion decoupling three-dimensional vibration isolation / vibration bearing with adaptive stiffness characteristics, belonging to the field of building structure vibration isolation / vibration. Background technique [0002] The basic isolation technology is regarded as one of the most important technological advances in the field of earthquake engineering in the 20th century, and has been widely used in the world. The basic principle of seismic isolation technology is to set seismic isolation bearings at the bottom of the building to obtain a seismic isolation layer with low horizontal stiffness, and reduce the seismic acceleration response of the superstructure through the filtering effect. And by setting up energy-consuming devices in the seismic isolation layer to absorb and consume the energy of ground vibration. Modern seismic isolation technology has a history of nearly 60 years and belongs to a passive vibration control ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing traditional building isolation bearings have the following deficiencies: First, they cannot isolate vertical earthquake / vibration and horizontal micro-vibration

Second, there is a contradiction between the traditional seismic isolation bearing in the horizontal direction to achieve a better seismic isolation effect and control the limit displacement of the seismic isolation layer

But at the same time, too small horizontal stiffness will lead to too large displacement of the isolation layer, and it is difficult to guarantee the safety of the structure under the action of a large earthquake

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