In order to further increase the isolation rate,a double layer vibration isolation system with Magnetorheological fluid dampers(MRD) is investigated numerically in the paper.

In the condition of two types of acceleration induced by the nuclear explosion, the isolation properties of double mass spring system are studied by the Runge Kutta method based on vibration dose value (VDV) criterion.

Research on working mechanism of story isolation structure;

Theoretical study on story isolation system

simplified analysis on calculation model of interlayer seismic isolation;

Here the application of the interlayer seismic isolation in some engineering is introduced,and the finite element program—ETABS is used for making out the dynamic nonlinear time-history analysis.

This paper describes the working characteristic of interlayer seismic isolation.

Setting isolation layer is a new technology between superstructure and substructure of project,which can reduce earthquake damage.

For new buildings,a new type of steel -asphalt composite isolation layer can be set in the top surface of foundation,which has advantages of good damping effect,low cost and convenient construction,and is suitable for most new buildings in rural areas.