Xiao Liu*, D. V Griffiths, Huiming Tang. (2015). Comparative Study of System Reliability Analysis Methods for Soil Slope Stability. Engineering Geology for Society and Territory - Volume 2, G. Lollino, et al., eds., , Springer, 1363-1366. DOI: http://dx.doi.org/10.1007/978-3-319-09057-3_240
Abstract:
Generally, a soil slope might have numerous potential slip surfaces, and each of them can lead to a failure of the slope. So, the soil slope’s reliability analysis is naturally a system reliability problem, and the overall failure probability may be larger than that of any single slip surface. This paper focuses on the comparative study of system reliability methods for soil slopes. Initially, a rigorous analytic solution is presented, followed by the classification of the existing analysis methods into four categories. Then, a comparison study between these categories is carried out. We conclude that the Monte Carlo-based analysis is best suited to resolve the system reliability assessment of soil slopes and that within this category the finite-element-based approach is superior to the limit-equilibrium-based one. Other methodologies tend to underestimate the failure probability of the soil slope system.
Keywords:
Slope stability; System reliability; Multiple failure modes; Probabilistic methods; Reliability analysis; Monte Carlo simulation
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