Variational and traditional rigorous slope stability analyses: Comparison of safety factors.

LESHCHINSKY DOV, CHOWDHURY SABINA

doi:10.3208/sandf1972.33.3_139

Variational and traditional rigorous slope stability analyses: Comparison of safety factors.

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Variational and Traditional Rigorous Sl

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The main objective of this paper is to compare safety factors obtained from Morgenstern-Price, Janbu and Spencer methods with the factors calculated from the modified variational approach (Leshchinsky and Huang, 1992a). Such comparison is essential since there is no mathematical proof that the variational analysis indeed yields a minimum and thus, physically produce significant results. The safety factors compared well, indicating the variational analysis is on a par with acceptable existing rigorous methods. Availability of a user-friendly computer code may make the variational analysis useful to practicing engineers. However, its greatest potential at the moment is in 3-D applications; i.e., unlike other methods, its extension to 3-D is straightforward.