Seismic Bearing Capacity Factors for Strip Footings on an Embankment by Using Lower-Bound Limit Analysis
Publication: International Journal of Geomechanics
Volume 16, Issue 3
Abstract
By using the lower-bound finite-element limit-analysis technique, the bearing capacity of a strip footing placed over an embankment was determined with the incorporation of pseudostatic horizontal seismic body forces. The variation of the bearing capacity factors , , and were calculated as the function of the friction angle of soil , slope angle , horizontal seismic acceleration coefficient , and setback distance . On the basis of the magnitude of , the values were varied from 0B to 15B. From the results, it can be understood that the bearing capacity factors decrease with the increase in and . With the increase in and , the bearing capacity factors were found to increase. After a particular setback distance, the effect of the embankment slopes was found to be negligible. Failure patterns were also studied.
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© 2015 American Society of Civil Engineers.
History
Received: Aug 6, 2014
Accepted: Jun 4, 2015
Published online: Dec 3, 2015
Discussion open until: May 3, 2016
Published in print: Jun 1, 2016
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