Advanced calculations of safety factors for slope stability
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abstract
With a fast progress of FE codes for geotechnical applications, a so-called , c-reduction method is becoming widely used for the determination of the slope stability factors. It has been shown that this method yields comparable results with the traditional slice methods in case of simple slope geometries and ground conditions. However, its application is limited to the Mohr-Coulomb limit stress condition and usually neglects the influence of stress and deformation level on the shear strength of soils. This contradicts experimental evidence and may lead to an unsafe design. The paper analyzes the sensitivity of the , c-reduction method and shows the influence of the stress-dependent strength on the calculated safety factor and on the geometry of the slip surface.
