Abstract
The purpose of this paper is to study the fundamental characteristics of inherent amsotropic Toyoura sand under drained cyclic shear conditions. Towards this end, cyclic loading tests and a loading test with rotation of principal stress axes were carried out using a large hollow cylindrical apparatus. Through the analysis of the experiment results, it is verified that the drained cyclic shear behavior of sand with inherent anisotropy could well be simulated, using the concept of a field of hardening moduli on the deviatoric stress plane and a function of normalized plastic work, based on the characteristics regarding drained shear behavior under monotonic loading.
