Effect of spatially variable shear strength parameters with linearly increasing mean trend on reliability of infinite slopes

作者: Dian-Qing Li , Xiao-Hui Qi , Kok-Kwang Phoon , Li-Min Zhang , Chuang-Bing Zhou

DOI: 10.1016/J.STRUSAFE.2013.08.005

关键词: Slip lineRandom fieldGeotechnical engineeringSlip (materials science)GeologySpatial variabilityFriction angleSlope stabilityRandom field theoryShear strength (soil)

摘要: This paper studies the reliability of infinite slopes in presence spatially variable shear strength parameters that increase linearly with depth. The mean trend increasing depth is highlighted. spatial variability undrained and friction angle modeled using random field theory. Infinite slope examples are presented to investigate effect on critical slip line probability failure. results indicate has a significant influence clay reliability. failure will be overestimated if underlying ignored. possibility lines occurring at bottom decreases considerably when considered. considerable distribution depths sandy slopes. most likely only lies under special case constant trend.

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