Linear Analysis of Interaction between Flexible Piles and Soil under Rigid Bearing Platform

Based on the linear load transfer function for pile end side soil and pile end soil, considering the influence of the load shared by the pile side soil on load transfer law of piles, and using mechanics theory and approximate solution method district method of defferential equation , a set of analytical formulas for interaction between flexible piles and soil has been derived. The influence of the pile soil modulus ratio and the pile length on the pile soil stress ratio is discussed. Meanwhile the influence of the pile soil modulus ratio on the bearing capacity of pile and pile soil composite body, the friction force of pile side, the axial force and displacement of pile are discussed. To verify the reliability of the proposed method. the results of model tests are compared with the calculated results in this paper, which shows that the proposed method has good precision.