Dynamic responses of a multilayered site with saturated soils are computed by using the exact dynamic-stiffness matrix of layer and halfspace. The calculations of free field response (incident P and SV waves)

Green’s functions and dynamic stiffness of strip rigid foundation are presented. The site model is more close to the real site. The degenerated results of this study are coincided with that of dry site. The influences of permeability of saturated soil on the dynamic stiffness of foundation are studied; and the results are compared to that of the corresponding dry site. The numerical studies indicate that the permeability conditions have an significant influence on vertical spring coefficients. It is shown that the porous fluid plays an important role in dynamic response of multilayered site with saturated soils.