Effect of the Flow Rule on the Bearing Capacity of Strip Foundations on Sand by the Upper-Bound Limit Analysis and Slip Lines
Publication: International Journal of Geomechanics
Volume 14, Issue 3
Abstract
The influence of the flow rule on the bearing capacity of strip foundations placed on sand was investigated using a new kinematic approach of upper-bound limit analysis. The method of stress characteristics was first used to find the mechanism of the failure and to compute the stress field by using the Mohr-Coulomb yield criterion. Once the failure mechanism had been established, the kinematics of the plastic deformation was established, based on the requirements of the upper-bound limit theorem. Both associated and nonassociated plastic flows were considered, and the bearing capacity was obtained by equating the rate of external plastic work to the rate of the internal energy dissipation for both smooth and rough base foundations. The results obtained from the analysis were compared with those available from the literature.
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International Journal of Geomechanics
Volume 14 • Issue 3 • June 2014
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© 2014 American Society of Civil Engineers.
History
Received: Dec 21, 2012
Accepted: Jun 3, 2013
Published online: Mar 24, 2014
Published in print: Jun 1, 2014
Discussion open until: Aug 24, 2014
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