Risk assessment of slope stability

被引:0
作者
Rahhal, ME [1 ]
Germani, M [1 ]
Sherfane, J [1 ]
机构
[1] St Josephs Univ, Ecole Super Ingn Beyrouth, Beirut 11072050, Lebanon
来源
APPLICATIONS OF STATISTICS AND PROBABILITY IN CIVIL ENGINEERING, VOLS 1 AND 2 | 2003年
关键词
slope stability; reliability analysis; risk; geotechnical engineering; earthquake engineering;
D O I
暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The world has become more vulnerable to disasters caused by hazards such as landslides and earthquakes. In geotechnical engineering, slope stability is perhaps the subject most dominated by uncertainty. The main deficiency with deterministic analysis is that it cannot explicitly consider parameter uncertainties, and a significant ambiguity lies in the relation between the factor of safety and the corresponding level of risk. The concept of reliability index beta introduces a better approach to assessing risk. Two cases are considered. First, the effects of the presence and the fluctuation of a phreatic surface on slope stability are discussed. The reliability index is analyzed as a function of correlation coefficients rho involving friction angle phi, cohesion c and pore water pressure u. The most probable failure point (limit state) seems to be affected more by p(cphi) than by p(cu) or p(phiu). In the second case, additional risk due to earthquakes is estimated for slopes with simple failure modes.
引用
收藏
页码:1371 / 1377
页数:7
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