New and Simple Equations for Ultimate Bearing Capacity of Strip Footings on Two-Layered Clays: Numerical study
Publication: International Journal of Geomechanics
Volume 16, Issue 4
Abstract
In this paper, two very simple and accurate equations are introduced that enable geotechnical engineers to determine the undrained ultimate bearing capacity of shallow strip foundations resting on two-layered clays. Results of the analyses show that in the case of weak-over-strong clay, usually general shear failure occurs, and in the case of strong-over-weak clay, the soil will most likely experience punching failure with a large amount of plastic settlement before it reaches its ultimate bearing capacity. This study applied the finite-difference method using a computer program to evaluate the undrained bearing capacity for all cases analyzed. The Mohr-Coulomb failure criterion was used for modeling the plastic behavior of soil. Simple equations are presented for cases of both strong-over-weak clay and weak-over-strong clay representing the bearing capacity of shallow foundations resting on two-layered clays. Results of this study are verified by acceptable statistical methods, and advantages of the presented equations in this paper are discussed.
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Published In
International Journal of Geomechanics
Volume 16 • Issue 4 • August 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Nov 20, 2014
Accepted: Sep 24, 2015
Published online: Jan 4, 2016
Discussion open until: Jun 4, 2016
Published in print: Aug 1, 2016
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