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System reliability analysis of rock slope stability involving correlated failure modes
Abstract This paper aims to propose a systematic quantitative method for system reliability evaluation of rock slope with plane failure involving multiple correlated failure modes. A probabilistic fault tree approach is presented to model system reliability of rock slope. An n-dimensional equivalent reliability method is employed to perform the system reliability analysis of the slope involving multiple correlated failure modes. Reliability sensitivity analyses at three different levels, namely, the single limit state function level, single failure mode level, and system reliability level, are carried out to study the effect of variables on reliability. An example is presented to demonstrate the validity and capability of the proposed approach. The results indicate that the system reliability of rock slope involving multiple correlated failure modes can be evaluated efficiently using the proposed approach. The system probability of failure is overestimated if the correlations between different failure modes are ignored. The relative importance of different failure modes to the system reliability can differ considerably. The sensitivity coefficients of basic random variables strongly depend on the selected sensitivity analysis level. The system reliability is sensitive to the location of the tension crack and the percentage of the tension crack filled with water.
System reliability analysis of rock slope stability involving correlated failure modes
Abstract This paper aims to propose a systematic quantitative method for system reliability evaluation of rock slope with plane failure involving multiple correlated failure modes. A probabilistic fault tree approach is presented to model system reliability of rock slope. An n-dimensional equivalent reliability method is employed to perform the system reliability analysis of the slope involving multiple correlated failure modes. Reliability sensitivity analyses at three different levels, namely, the single limit state function level, single failure mode level, and system reliability level, are carried out to study the effect of variables on reliability. An example is presented to demonstrate the validity and capability of the proposed approach. The results indicate that the system reliability of rock slope involving multiple correlated failure modes can be evaluated efficiently using the proposed approach. The system probability of failure is overestimated if the correlations between different failure modes are ignored. The relative importance of different failure modes to the system reliability can differ considerably. The sensitivity coefficients of basic random variables strongly depend on the selected sensitivity analysis level. The system reliability is sensitive to the location of the tension crack and the percentage of the tension crack filled with water.
System reliability analysis of rock slope stability involving correlated failure modes
Li, Dian-Qing (Autor:in) / Jiang, Shui-Hua (Autor:in) / Chen, Yi-Feng (Autor:in) / Zhou, Chuang-Bing (Autor:in)
KSCE Journal of Civil Engineering ; 15 ; 1349-1359
01.11.2011
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
System probabilistic model of rock slope stability considering correlated failure modes
| British Library Online Contents | 2017
System probabilistic model of rock slope stability considering correlated failure modes
| British Library Online Contents | 2017
System probabilistic model of rock slope stability considering correlated failure modes
| Online Contents | 2017