(1) What is SSI？.(2) What kinds of phenomena are caused by SSI.(3) In order to consider the effect of SSI on the responseof structure, the soil-structure interaction system( Coupling system ) is modeled by Sway-Rocking Model.(4) The Sway-Rocking Model is supported by"Dynamic Impedance Function", and is subject to "Foundation input motion" as an earthquake disturbance.
(5) The Dynamic Impedance Functions are expressed bycomplex numbers. The real part of the Dynamic Impedance Function corresponds to the dynamic stiffness, and the imaginary part is related to damping. Dividing the imaginary part by circular frequency , the damping coefficient Cis obtained.(6) This damping is attributable mostly to the radiation waveemitting from the foundation into soil. Particularly,this damping is called "
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