DEFORMATION PREDICTION FOR ANISOTROPIC SAND DURING THE ROTATION OF PRINCIPAL STRESS AXES.

Abstract

A model which can simulate the deformation behavior of an anisotropic sand under the stress condition including arbitrary rotation of principal stress is proposed. The present model is based on the idea that the deformation behavior of soil is controlled by the sliding deformation on infinite potential sliding planes. Formulation of the two-dimensional stress-strain relationships on sliding planes by employing the quadric hyperbolic relation between shear strain and stress obliquity with the aid of Masing's rule, and application of the extended concept of Compounded Mobilized Plane by Matsuoka (1974) make it possible to predict the three-dimensional anisotropic stress-strain relationships. The verification with respect to the deformation behavior of anisotropic dense sand measured in the hollow cylinder apparatus indicates the sufficient capability of this model.