Comparison of factor of safety obtained from limit equilibrium methods with strength reduction factors in finite element modeling

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2012
Engin, Volkan
Designing with Limit Equilibrium Methods involve a factor of safety (FS) in order to maintain the stability and to keep the resisting structure away from limit state on the safe side. Finite Element Program (such as Plaxis) on the other hand, instead of an FS, reduces the shear strength of the soil by introducing a reduction factor that is applied to tanɸ & c values, resulting in different analysis results compared with Limit Equilibrium Methods results. This study aims to associate tanɸ & c reduction factors with the FS value obtained from Limit Equilibrium Methods. The conventional value obtained by Limit Equilibrium Method will be assumed as the true FS, and tanɸ & c reduction factors will be correlated with this value. The expected result of this thesis is to obtain a relation or a factor between assumed true FS value obtained from Limit Equilibrium Methods and tanɸ & c reduction factors derived from the software model.
Citation Formats
V. Engin, “Comparison of factor of safety obtained from limit equilibrium methods with strength reduction factors in finite element modeling,” M.S. - Master of Science, Middle East Technical University, 2012.