Theoretical Research And Numerical Simulation Of Effect Of Stress Distribution Of Foundation Soil Under Compaction Disturbance

As China’s reform opening-up and continuous development， The developmentof the urbanization process faster and faster，available urban land become rare. It mustbe to reinforce some soft soil to alleviate the difficulties of land during citydevelopment.During the Proeessing of eonsturetion，it is that the soil will be disturbedmore or less，and the state of the disturbed soil is changed continually.This thesis isfocus on the soil compaction effect due to pile installation by theoretical andnumerical methods．Firstly， base on Vesic Cavity expansion theory， theoretical solution ofdisplacement,soil pore pressure and stress caused by undrained cylindrical cavityexpansion without considering the disturbances and considering the disturbances isfound．And simulate this two situations by finite element software(Abaqus)．Thetheoretical solutions are compared with those by Abaqus．We found that the analyticalsolution obtained in this study is consistent with the abaqus simulation results.Then，based on axisymmetric problems of three-dimensional consolidationwhich widely used in engineering－drainage consolidation of sand well foundation，theoretical solution of the sand well consolidation considering the disturbance theoryis found．And simulate the two situations by finite element software(Abaqus)，Combination of theory and model analysis．The law with considering the disturbancesof dissipation of pore water pressure development over time is found．...