Using a nonlinear load transfer function for the side soil and a linear load transfer function for the end soil of a pile, this paper introduces a method combining the incremental load transfer matrix method and the approximate analytical differential equation solution method. The proposed method provides a new approach for analyzing the nonlinear interaction between a flexible pile group under rigid platform and the surrounding soil. It is found that, under rigid platform, the longitndinal distributions of the skin frictions are different for the middle pile, side piles and corner piles,and t...
