Rigid pile composite foundations are getting more and more application to construction engineering. However
the research on their response under dynamic loading
especially under earthquake loading
is quite limited. Now the seismic response analysis in time domain is performed with 3-D finite element method
taking into account of the interactions among soil
pile and the superstructure. The differences between rigid pile composite foundation and pile foundation in seismic response are analyzed. Some parameters influencing the anti-seismic behavior of rigid pile composite foundation are studied. Based on these analyses
some conclusions which may be of some value for anti-seismic design of this type of composite foundations are drawn.