Computation method and realization procedure for time-domain recursive parameters of ground resistance

Based on the time-domain approach of computing foundation resistance with the frequency dependence of foundation impedance,the parameter fitting method and system stability were studied,and the computation procedure for time-domain recursive parameters of ground resistance was developed.By use of general FEM software and the time-domain difference of ground resistance,the structure history analysis programs with consideration of soil-structure dynamic interaction was developed.Finally,a numerical example was presented to verify the validity of the proposed method.The effect of impedance frequency dependence of foundation on the dynamic response of soil-structure system was preliminary discussed.