Pseudo-Static Analysis of Slope Considering Circular Rupture Surface

Pseudo-Static Analysis of Slope Considering Circular Rupture Surface

Sima Ghosh (NIT Agartala, Agartala, India)
Copyright: © 2014 |Pages: 7
DOI: 10.4018/ijgee.2014070103
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Abstract

In this present paper, a circular failure surface passing through the toe is assumed for a homogeneous soil, and the Fellenius line is used to locate the centre of the most critical circle. Using limit equilibrium analysis under the influence of static forces such as weight of potential slide mass and surcharge along with the pseudo-static seismic forces are considered to obtain the factor of safety of the slopes. Factor of safety is found through the application of force equilibrium. The effects of variation of different parameters like slope angle (i), soil friction angle (F) and seismic acceleration coefficients both in the horizontal and vertical directions (kh and kv respectively) on the factor of safety are presented. Finally, the present results are compared to the existing solutions available in literature and found to give minimum values of factor of safety using the present approach for seismic slope stability analysis.
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Method Of Analysis

This method is used for the stability analysis of homogeneous slopes. It is based on the limit equilibrium approach to compute the factor of safety against circular failure surface incorporating of pseudo-static horizontal and vertical seismic forces. These horizontal and vertical seismic forces have been expressed as a product of the horizontal and vertical seismic acceleration coefficients (kh and kv respectively) with the weight of the potential wedge and surcharge load.

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