Reliability Analysis of Unsaturated Soil Slopes

Babu, Sivakumar GL and Murthy, DSN (2005) Reliability Analysis of Unsaturated Soil Slopes. In: Journal of Geotechnical and Geoenvironmental Engineering, 131 (11). pp. 1423-1428.

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Abstract

Many soil slopes are unsaturated in their initial state, and suction contributes to initial stability. Stability of these slopes decreases as suction decreases with time due to rainfall infiltration and water redistribution. Many of the parameters in the assessment of stability are highly variable. In this technical note, sensitivity/reliability analysis of design variables for a typical unsaturated soil slope is conducted. Sensitivity analysis shows that suction parameters have significant influence on the stability. Reliability computations performed for the slope considered show that failure zones are better captured by the reliability index than the conventional factor of safety. The study also shows that variation of saturated hydraulic conductivity significantly influences slope reliability.

Item Type:	Journal Article
Publication:	Journal of Geotechnical and Geoenvironmental Engineering
Publisher:	American Society of Civil Engineers
Additional Information:	Copyright of this article belongs to American Society of Civil Engineers (ASCE)
Keywords:	Slopes;Reliability;Hydraulic conductivity;Failures
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	16 Nov 2005
Last Modified:	19 Sep 2010 04:21
URI:	http://eprints.iisc.ac.in/id/eprint/3998

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