Abstract：A simplified coupling analysis method for elastoplastic consolidation problem of clay under different stress paths is presented. An elastoplastic constitutive model of clay is constructed on different initial conditions based on numerical modeling method and it can be adopted with Biot consolidation theory. Then the incremental governing partial differential equations are established for plane strain consolidation problem. Based on the constitutive models，a Poisson equation for pore water pressure is derived and the basic solution is obtained. Because the volumetric strain can be acquired as the right term of the equation by the constitutive model straightly；the deformation field of soil skeleton and pore water pressure field are coupled directly. Thus the Poisson equation is more accurate than the classic diffusion equation and it is easier for solving than the Biot functions. Moreover，the interaction between the volumetric strain and shear strain is considered. A semi-analytical and semi-numerical method for the nonlinear consolidation equations with the coupling fluid-solid issue is presented and its finite element program is given. Moreover，a systematic numerical approach from numerical modeling through simulation for soil consolidation is established. The computational results of some examples under different stress paths show that this approach is simple and able to reflect the influences of some facts，such as stress paths and load scope，on displacement，settlement and pore water pressure of foundation. Especially，stress path affects the solid deformation field evidently.
