Slip Mechanism‐based Constitutive Model for Granular Soils
Publication: Journal of Engineering Mechanics
Volume 115, Issue 4
Abstract
A stress‐strain relationship for granular soils based on microstructural consideration is presented. Granular medium is considered to be an assembly of particles intersected by a large number of potential sliding planes. Under loading the planes are mobilized and the overall deformation of the soil mass is obtained from the movement of these planes. The movements of these planes are governed by the resolved tractions on these planes. The mechanical properties of these planes can be different in each orientation in order to account for the anisotropy of the granular media. The parameters of each plane is estimated from the overall deformation behavior of fhe soil sample. Procedure for the determination of the model parameters is discussed. Three types of tests are needed for determining the parameters, namely, isotropic compression test, triaxial compression test and triaxial extension test. An example of Ottawa sand in cubical triaxial device is shown to demonstrate the applicability of the model.
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Published In
Journal of Engineering Mechanics
Volume 115 • Issue 4 • April 1989
Pages: 790 - 807
Copyright
Copyright © 1989 ASCE.
History
Published online: Apr 1, 1989
Published in print: Apr 1989
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