Elastoplastic numerical approach for predicting the electro-osmotic consolidation behaviour of soft clays

A finite element (FE) formulation for electro-osmotic consolidation (EOC) analysis is developed in this paper which was implemented in a FE analysis (FEA) program. This formulation is integrated with the elastoplastic Modified Cam Clay (MCC) model to capture the nonlinear stress-strain behaviour of the soil during EOC using the fully coupled analysis approach. The numerical model is verified against triaxial EOC test data and close form solutions of typical one-dimensional EOC problems. Details of the formulation and the results of the validation analyses are reported in this paper.