Pile under different loading situation by the FEM simulation and analysis on pile lateral friction resistance

This paper applied the plastic and elastic FEM to simulating static loading method and self-balanced method of single pile.It used contact element to simulate the discontinue face between pile and soil and combined the structure characteristics of soil and rock mass.The outcomes of simulation of the self-balanced method and that of the self-balanced method in field coincide better,so the model and coefficients used is reasonable.And then,through the simulation of the static loading method,the stress and displacement of pile and soil around the pile is analyzed.At the same time,the value of stress and strain of the element is obtained and the pile lateral normal force is determined.Finally,we get the pile lateral friction resistance combined with friction parameters by piles territories test,according to Mohr-coulomb theory.Compared the outcomes of FEM Simulation with outcomes of self-balanced method,it is certified that they coincide better based on reasonable selection of the physical parameters and mechanics models.Getting pole lateral friction resistance through FEM calculation is feasible.