Numerical simulation for the pile with earthquake load

Downdrag develops when a pile is driven through a soil layer which will settle more than the pile. The estimate of downdrag forces is important to pile undergoing soil downward movement. Much numerical analysis work has been done on the behavior of single pile based on the linear or nonlinear finite element analysis, much less work has been done on pile downdrag, especially with earthquake load. In the present paper, a numerical model is founded with earthquake load, deformation and stress responses are obtained as well as the mechanical response of pile during calculation, whose result reveals the mechanism of pile with soil.