A 3D Isolation/Vibration Bearing with Adaptive Stiffness Characteristics

Abstract

The invention relates to a three-dimensional shock insulation / vibration isolation support with self-adaptive stiffness characteristics. The three-dimensional shock insulation / vibration isolation support mainly comprises an upper connecting plate, a middle seat plate, a lower connecting plate, belleville springs, a compression spring, setup springs, a laminated lead core rubber support and viscousdampers. The upper connecting plate, the middle seat plate and the lower connecting plate are made of high-strength low-carbon steel and have higher bearing capacity. The upper connecting plate mesheswith the middle seat plate to play a role in guiding movement. The belleville springs, the compression spring, the setup springs, the laminated lead core rubber support and the viscous dampers together form a vertical shock insulation / vibration isolation system. The laminated lead core rubber support, the setup springs and the viscous dampers form a horizontal shock insulation / vibration isolationsystem. The three-dimensional shock insulation / vibration isolation support belongs to a passive adaptive vibration control method and can be used for buildings affected by environmental vibration, and can have the effect of insulating the ground shock while isolating the environmental vibration.

Description

technical field [0001] The invention relates to a three-dimensional shock-isolation / vibration support with self-adaptive stiffness characteristics, which belongs to the field of shock-isolation / vibration of building structures. Background technique [0002] Base 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 the seismic isolation support at the bottom of the building to obtain a seismic isolation layer with low horizontal stiffness, and reduce the seismic acceleration response of the upper structure through the filtering effect. And by setting the energy dissipation device on the seismic isolation layer to absorb and consume the earthquake vibration energy. Modern seismic isolation technology has a history of nearly 60 years and belongs to a passive vibration control technology....

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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