Composite device of building vibration isolation layer

Abstract

A combined system as the earthquake preventing layer of building is composed of a movable structure layer fixed to the building, a static structure layer fixed to foundation, and at least one sandwich layer while is between said movable and static layers and has multiple sandwich bases relative to said movable and static layers. Its advantage is high effect to increase the antiearthquake power of building.

Description

technical field [0001] The invention relates to a combined device for building shock isolation, which is also applicable to structures, bridges and other structures that need shock isolation. Background technique [0002] Chinese patent: 02272281.5 provides a building isolation device, the bottom of the building is provided with a movable movable structure plane, the movable foundation of the movable structure plane and the base structure plane connected to the foundation are provided with insulating and seismic isolation supports mechanism. In case of an earthquake, the plane of the foundation structure that is firmly connected to the foundation will have a horizontal displacement with the seismic wave. Because the building and the plane of the foundation structure are connected by an insulating support mechanism, the horizontal displacement of the foundation structure plane is transmitted through the insulation support mechanism , basically does not affect the movement of...

AI Technical Summary

Problems solved by technology

In case of an earthquake, the plane of the foundation structure that is firmly connected to the foundation will have a horizontal displacement with the seismic wave. Because the building and the plane of the foundation structure are connected by an insulating support mechanism, the horizontal displacement of the foundation structure plane is transmitted through the insulation support mechanism , basically does not affect the movement of the center of gravity of the building, thus greatly weakening the destructive power of the earthquake to the building

But because this kind of seismic isolation device is only provided with a group of structural layers that can be displaced relative to the movable structure plane and the base structure plane of the building, if a large earthquake occurs, the center of gravity of the building may deviate from the center of the fixed foundation when it is displaced too much. large, causing buildings to tilt and be destroyed

In order to prevent excessive displacement of the center of the building relative to the fixed foundation during an earthquake, a hard collision limit device is provided between the building and the fixed foundation in the prior art; if a hard collision limit occurs due to excessive displacement, The instantaneous collision of such a huge mass has a huge kinetic energy, and the impact force at this moment is also very large, exceeding the bearing strength of the hard collision limit block, resulting in the destruction of the building

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