Characterization of Failure in Cross-Anisotropic Soils
Publication: Journal of Engineering Mechanics
Volume 130, Issue 5
Abstract
Drained true triaxial tests on dense Santa Monica Beach sand deposited with a cross-anisotropic fabric have been performed to study the failure condition in the principal stress space. The failure surface was assumed to be symmetric around the vertical axis (on the octahedral plane of the principal stress space), but varying as a function of the Lode angle. Data from previously performed consolidated-undrained true triaxial tests on San Francisco Bay Mud and data from triaxial compression, triaxial extension, and plane strain tests on Toyoura sand showed similar behavior in terms of effective stresses. A three-dimensional failure criterion is proposed for characterization of failure in cross-anisotropic soils, under commonly occurring conditions when loading and depositional directions coincide and no significant rotation of principal stresses occur. This cross-anisotropic criterion is developed using a coordinate rotation of the principal stress space and utilization of an existing isotropic failure formulation. Derivation of the three required parameters is explained and illustrated. The proposed criterion is compared with various experimental results; and it is demonstrated that the failure criterion for cross-anisotropic soils captures the experimental behavior with good accuracy.
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Information
Published In
Journal of Engineering Mechanics
Volume 130 • Issue 5 • May 2004
Pages: 599 - 606
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: May 1, 2002
Accepted: Sep 11, 2003
Published online: Apr 15, 2004
Published in print: May 2004
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