A Kinematic Decoupling 3D Isolation/Vibration Bearing with Adaptive Stiffness Characteristics

Abstract

The present invention is a motion decoupling three-dimensional shock-isolation / vibration support with adaptive stiffness characteristics, the main parts of which include an upper connecting plate, a middle operating plate, a lower connecting plate, disc springs, compression springs, pre-compressed springs, laminated lead Core rubber mounts and viscous dampers. The upper connection plate, the middle operation plate and the lower connection plate are made of high-strength low-carbon steel, which has a high bearing capacity. The upper connecting plate and the middle working plate are engaged with each other to play the role of motion guide. Disc springs, compression springs, preload springs, laminated lead rubber bearings and viscous dampers together form a vertical vibration isolation / vibration system. Laminated lead rubber bearings, preloaded springs and viscous dampers form a horizontal vibration isolation / vibration system. The invention belongs to a passive self-adaptive vibration control means, which can be used in buildings affected by environmental vibration, and can isolate the ground vibration while isolating the environmental vibration.

Description

technical field [0001] The invention relates to a motion decoupling three-dimensional shock-isolation / vibration support with 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 contro...

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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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