Simulation Study on Pile-soil Interaction and Confirmation of Bearing Capacity of Single Pile

Based on the in-situ test of bored pile and soil interaction and connected with the specific soil properties and structures of Sujiahang(Suzhou-Hangzhou) Expressway,this paper simulates the interaction of bored pile and soil in soft soil zone by adopting the finite element method.Interaction of pile and soil,transfer of load,and relationship between pile-soil comparative displacement and pile side friction are studied.The simulation result of three-dimensional finite element method is close to the measured value by comparing with pile load test materials.On that base,this paper brings a new computational formula of ultimate bearing capacity of single pile according to characteristic of desynchronized maximum of side friction,substance of pile-soil interaction,and load transfer law.