kinematic soil-structure interaction effects on inelastic systems with embedded foundation

The soil-structure interaction can affect the elastic and inelastic seismic response of buildings. in other words, the fixed-base assumption is not always correct to determine the dynamic response of structures. the soil-foundation-structure interaction initially changes the input motion applied to the system, which is known as kinematic interaction (ki). its second effect is the change in the dynamic properties of the soil-structure system (longer natural period and usually higher damping). the radiation of energy of the propagating waves away from the structure in the semi-infinite soil media, generally increase the soil-structure damping. this effect is called inertial interaction (ii) (wolf, 1985).