Electromagnetic damping negative-rigidity support

Abstract

The invention relates to an electromagnetic damping negative-rigidity support. The electromagnetic damping negative-rigidity support comprises a circular upper connecting plate, a circular lower connecting plate, a cylindrical seismic isolation support connected with the centers of the upper connecting plate and the lower connecting plate, an electromagnetic damping module and an electromagnetic force module, wherein the electromagnetic damping module and the electromagnetic force module are arranged between the upper connecting plate and the lower connecting plate. The electromagnetic dampingmodule comprises annular magnets fixed to the upper connecting plate and conductor plates fixed to the lower connecting plate. The electromagnetic force module comprises inner ring magnets fixed to the upper connecting plate and outer ring magnets fixed to the lower connecting plate. The annular magnets, the inner ring magnets and the outer ring magnets are arranged sequentially from the centersto the outer edges. The conductor plates are annular and are arranged between the seismic isolation support and the outer ring magnets. Compared with the prior art, the electromagnetic damping negative-rigidity support has the advantages that external energy sources are not needed, durability and reliability are achieved, and negative rigidity is generated.

Description

technical field [0001] The invention relates to the field of shock absorption and isolation in civil engineering, in particular to an electromagnetic damping negative stiffness support. Background technique [0002] Earthquake disasters have brought immeasurable loss of life and property to human beings. The base isolation system is an ideal new technology for earthquake resistance and disaster prevention to reduce earthquake disasters. It shows better seismic performance than traditional isolation systems in earthquakes. [0003] The basic seismic isolation structure system divides the structure into three parts: the upper structure, the seismic isolation layer and the lower structure by setting a flexible seismic isolation layer. After the main seismic energy is consumed, only a small part of the energy is transmitted to the superstructure. Its essence is to reduce the seismic response of the structure by reducing the structural stiffness and prolonging the natural vibrat...

AI Technical Summary

Problems solved by technology

[0005] At present, rubber shock-isolating bearings are widely used, but according to the existing technical conditions, it is difficult to produce qualified rubber shock-isolating bearings with very low stiffness

A large number of experiments have shown that the vibration isolation bearing with too low rubber hardness or too large total rubber thickness is not stable, has low bearing capacity, and is prone to abnormal deformation

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