Elastoplastic Coupled Model of Saturated Soil Consolidation under Effective Stress

Soil’s consolidation is a geotechnical problem resulting from stress-transfer process that initiates when the load applied to water contained in soil, producing reduction pore pressure and rearranging solid particles, thus causing decrease soil volume. Therefore, coupled flow–mechanical problem. Coupled models have been developed simulate this phenomenon while considering different theories, providing consistent results. This paper presents an elastoplastic model of under Terzaghi’s effective stress formulated using equations transient flow, balance moment, motion, critical state considered strains. The algorithm provided fast easy results due its flexibility, as it allowed combinations loading boundary conditions. Additionally, external/internal flow inflow or outflow, which modified produced changes horizontal vertical displacements. numerical obtained showed appropriate behavior phenomenon, well evolution Uy Ux displacements, pw, volumetric εv deviatoric εq strain, mean σp σq stress, variation ∆εv, elastic/plastic finite elements yield surface state.