The influence of a constitutive model on the stress and strain paths in subsoil

This paper presents a study of dependence of stress and strain paths on a constitutive model. The analysis of a 3D non-axisymmetrical problem of a homogenous subsoil under a cuboid pad foundation subjected to a uniform load was conducted in the Z_SOIL.PC 2007 3D v.7.12 finite element program. Differences in the shape and length of the stress and strain paths obtained with the use of elastic, Drucker-Prager and Modified Cam Clay models at some selected points of the subsoil were presented. The results obtained with and without the interface elements were compared as well.