Author(s)

M. Hyodo, Y. Yamamoto & M. Sugiyama

Abstract

Undrained cyclic shear behaviour of clay with initial static shear stress M. Hyodo, Y. Yamamoto, M. Sugiyama Department of Civil Engineering, Yamaguchi University, Ube 755, Japan ABSTRACT A series of undrained cyclic triaxial compression tests has been performed on a high plastic marine clay. Testing was performed for not only isotropically but also anisotropically consolidated specimens under various combinations of initial static and subsequent cyclic shear stresses. The cyclic shear strength was first discussed, and then, residual shear strain was investigated related with effective stress ratio at the peak of cyclic stress. Based on the experimental results, a semi-empirical model was proposed for evaluating the development of residual shear strain during cyclic loading. The model successfully explained the behaviour of clay subjected to various magnitude of initial static and subsequent cyclic shear stresses. INTRODUCTION The main in

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