Soil arching effect and calculation model for soil pressures of passive piles

Numerical model is adopted to simulate the soil arching effect of passive piles due to the lateral displacement of soil and some results of soil arching effect of passive piles are obtained. Based on the soil movement and stress transfer approach, soil pressure of the passive piles is calculated considering the soil arching effect at the passive side of piles and active wedge model at the active side of piles. Considering the real soil layer and soil arching effect in the passive side of piles and the stress transfer of pile shaft into the soil by means of dynamic strain wedge at the active side of piles, a global equilibrium equation is established and solved by use of the finite difference method. Finally, the proposed method is verified by an engineering example.