Abstract:The problem of passive pile is commonly met in bridge,wharf and industrial factory engineering. Based on soil movement and stress transfer approach,soil pressure of passive piles is calculated considering soil arching effect at passive side of pile and active wedge model at active side of pile. In this way one-dimensional model of beam on elastic foundation(BEF) is extended to 3D one considering the complicated interaction between pile and soil. Considering the realistic soil layers,soil arching effect in the passive side of pile and the stress of pile shaft transferring into soil by means of dynamic strain wedge at active side of pile,the global equilibrium equation is established,which is solved by finite difference method. Finally,the practical method is verified by an example from real engineering.