Based on the dynamic test of the pile in soft soil area

the interaction of pile and soil is analyzed by finite element method. Commonly used equivalent linear model is chosen to consider the nonlinerity of soil

material damping of pile is considered and the changing-status nonlinearity of soil-structure interface is considered by contact element. Parameters of pile and soil influenced on pile’s displacement were analyzed. The results show

there is some influences on pile top’s displacement as a result of a change of pile’s modulus of elasticity and material damping; and the pile’s displacement become smaller with the pile’s modulus of compressibility and material damping increasing.