Study on the Usage of Various Constitutive Models in Predicting Pore Water Pressure

In this paper pore pressure coefficients were studied using various constitutive models.The expressions of these coefficients for Tsinghua elasto-plastic model, modified Lade’s model and modified Cambridge model were derived. The undrained behaviors of a compacted clay with positive dilatancy and a medium sand with negative dilatancy wera predicted using above-mentioned three models, Duncan EB and linear elastic model with parameters determined from the CD test data. Some valuable conclusions have been obtained.