The finite element analysis of the mechanical properties of CFG pile composite foundation

CFG pile composite foundation is composite foundation with high bond strength pile foundation.With the development of the theoretical research design on CFG pile composite foundation,the foundation form has been widely used throughout the country.In this paper,according to the geological conditions in HeFei,use the finite element analysis software ABAQUS to carry on the numerical simulation for the raft-pile-soil model about some engineering CFG pile composite foundation. Foundation settlement,the change of the stress and settlement of CFG piles and soil is studied in practical engineering.It draws the conclusion:(1)In this paper,according to the numerical analysis data,it confirms the rationality of the simulation software and illustrates the mattress layer in the role of the CFG pile composite foundation.(2)According to the load sharing ratio of pile and soil from the numerical analysis,calculated that utilization rate of the bearing capacity of a single pile was 74%.The optimization design method is put forward for the reason.