Slope-Stability Assessments Using Finite-Element Limit-Analysis Methods
Publication: International Journal of Geomechanics
Volume 17, Issue 2
Abstract
This paper utilizes finite-element limit-analysis methods to investigate the stability of slopes of various properties and in nature. Specifically, a slope with a soft (weak material) band, a postquake slope, and rock slopes were investigated. The conventional Mohr-Coulomb failure criterion and the Hoek-Brown failure criterion are utilized for soil and rock slopes, respectively. The Hoek-Brown failure criterion can be applied directly in the finite-element limit-analysis methods without the need for conversion to the equivalent Mohr-Coulomb parameters. The applicability of the numerical limit-analysis methods in both soil and rock slopes is clearly demonstrated. It is also significant to note that the results presented in this paper have two distinct solutions: the upper- and lower-bound solutions. In addition, the failure mechanisms of the slopes are also shown. Prior assumptions of the failure mechanisms are not required for these finite-element limit-analysis methods, therefore providing a more realistic understanding of slope failures.
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Published In
International Journal of Geomechanics
Volume 17 • Issue 2 • February 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jul 23, 2015
Accepted: Apr 7, 2016
Published online: May 17, 2016
Discussion open until: Oct 17, 2016
Published in print: Feb 1, 2017
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