Based on the basic theory of soil - structure interaction , a finite element model for the analysis of soil - buried structure dynamic interaction is built with ansys program in this paper , some subroutines are programmed in apdl for the time - history seismic analysis 本文根據(jù)土-結(jié)構(gòu)動(dòng)力相互作用的基本理論,在ansys上建立了土-地下結(jié)構(gòu)相互作用的有限元模型,利用ansys的二次開(kāi)發(fā)語(yǔ)言apdl編制了時(shí)程分析的子程序段。