CONSOLIDATION ANALYSIS OF ELASTOPLASTIC SOIL

Non-linear consolidation analysis using a finite element formulation b ased on Blot's consolidation theory has been used to study the behavio ur of strip and circular footings resting on an elastic-perfectly plas tic soil satisfying the Mohr-Coulomb yield criterion. The initial stre ss method with a modified Newton-Raphson iterative scheme has been use d for this study. Displacement of the footing and pore pressure dissip ation in the soil are compared with those of linear analysis. Incorpor ation of the plastic behaviour of soil increases the consolidation rat e and settlement. Effects of flow rule and p(o)/c ratio on consolidati on behaviour have also been reported.