Elastoplastic plane strain consolidation of clay based on numerical modeling method

摘要

An elastoplastic constitutive model of clay is constructed based on umerical modeling method. The model is applied to Biot consolidation theory. Then the incremental governing partial differential equations are established for plane strain consolidation problem. On the basis of it, a physical equation for pore water pressure is presented and the basic solution is derived. By use of the basic solution of pore water pressure combined with finite element method of soil mechanics, the semi-analytical and semi-numerical method for nonlinear consolidation equations is presented. Moreover, a systematic numerical method of numerical modeling and simulation for soil consolidation is established. The method is applied to numerical analyses of some examples. It is indicated that this method is reasonable, which can reflect the effect of stress path on settlement and pore water pressure.