Study of damping property and seismic action effect for soil-structure dynamic interaction system

Through investigating the property of structure damping, material viscous damping of soil and the radiation damping of foundation considering translation and rocking, the coupling damping ratio and the damping reduction factor of the soil-structure-interaction system are deduced. Based on studying of the relationship between damping reduction factor. and seismic influence coefficient., it is shown that it will improve the damping property and earthquake-resistant capability, and reduce the earthquake action of the SSI system, so as to provide a theoretical basis for the aseismatic researches and aseismic designs.