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Erschienen in:
2021 | OriginalPaper | Buchkapitel
Reliability Analysis of Earth Slopes Using Direct Coupling
verfasst von : A. T. Siacara, G. F. Napa-García, A. T. Beck, M. M. Futai
Erschienen in: Challenges and Innovations in Geomechanics
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Abstract
This paper shows how accurately and efficiently reliability analyses of geotechnical installations can be performed by directly coupling geotechnical software with a reliability solver. An earth slope is used as the study object. The limit equilibrium method of Morgenstern-Price is used to calculate factors of safety and find the critical slip surface. The deterministic software package Slope/w is coupled with the StRAnD reliability software. Reliability indexes of critical probabilistic surfaces are evaluated by the first-order reliability methods (FORM). By means of sensitivity analysis, the effective cohesion (\( c^{\prime} \)) is found to be the most relevant uncertain geotechnical parameter for slope equilibrium. The slope was tested using different geometries. Finally, a critical slip surface, identified in terms of minimum factor of safety, is shown here not to be the critical surface in terms of reliability index.