考虑渗流变形耦合作用的基坑开挖分析

In order to research the influence of the seepage on the deformation of supporting structure and pore pressure of soil during deep foundation pit excavation, based on the basis of Biot's consolidation theory and Drucker-Prager non-linear elatic model, the coupling of groundwater flow and soil skeleton deformation was analyzed by use of software ABAQUS. Numerical analysis model for deep excavation in Taiyuan has been done, one is based on the total stress theory without considering the role of water, the other is based on effective stress theory with considering the groundwater flow and deformation coupling. By comparision the two results which obtain by finite elements analysis, receiving that the variation of seepage on the deformation of supporting structure is great, so the seepage can not be ignored in an actual project.