Seismic Bearing Capacity of Foundations on Cohesionless Slopes

Kumar, Jyant and Chakraborty, Debarghya (2013) Seismic Bearing Capacity of Foundations on Cohesionless Slopes. In: JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 139 (11). pp. 1986-1993.

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Abstract

By applying the lower bound theorem of limit analysis in conjunction with finite elements and nonlinear optimization, the bearing capacity factor N has been computed for a rough strip footing by incorporating pseudostatic horizontal seismic body forces. As compared with different existing approaches, the present analysis is more rigorous, because it does not require an assumption of either the failure mechanism or the variation of the ratio of the shear to the normal stress along the footing-soil interface. The magnitude of N decreases considerably with an increase in the horizontal seismic acceleration coefficient (kh). With an increase in kh, a continuous spread in the extent of the plastic zone toward the direction of the horizontal seismic body force is noted. The results obtained from this paper have been found to compare well with the solutions reported in the literature. (C) 2013 American Society of Civil Engineers.

Item Type:	Journal Article
Publication:	JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
Publisher:	ASCE-AMER SOC CIVIL ENGINEERS
Additional Information:	copyright for this article belongs to ASCE
Keywords:	Load bearing capacity; Earthquakes; Failures; Limit analysis; Optimization; Plasticity; Slopes; Seismic effects; Bearing capacity; Earthquakes; Failure; Foundations; Limit analysis; Optimization; Plasticity
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	11 Nov 2013 11:35
Last Modified:	11 Nov 2013 11:35
URI:	http://eprints.iisc.ac.in/id/eprint/47737

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