Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of spatially variable shear strength parameters with linearly increasing mean trend on reliability of infinite slopes
Highlights Mean trend of shear strength parameters increasing with depth is highlighted. Slope reliability considering spatial variability is studied. Mean trend of shear strength parameters influences slope reliability significantly. Ignoring increasing trend of shear strength overestimates probability of failure. Critical slip surface lies at the bottom of sandy slope for a constant mean trend.
Abstract This paper studies the reliability of infinite slopes in the presence of spatially variable shear strength parameters that increase linearly with depth. The mean trend of the shear strength parameters increasing with depth is highlighted. The spatial variability in the undrained shear strength and the friction angle is modeled using random field theory. Infinite slope examples are presented to investigate the effect of spatial variability on the depth of critical slip line and the probability of failure. The results indicate that the mean trend of the shear strength parameters has a significant influence on clay slope reliability. The probability of failure will be overestimated if a linearly increasing trend underlying the shear strength parameters is ignored. The possibility of critical slip lines occurring at the bottom of the slope decreases considerably when the mean trend of undrained shear strength is considered. The linearly increasing mean trend of the friction angle has a considerable effect on the distribution of the critical failure depths of sandy slopes. The most likely critical slip line only lies at the bottom of the sandy slope under the special case of a constant mean trend.
Effect of spatially variable shear strength parameters with linearly increasing mean trend on reliability of infinite slopes
Highlights Mean trend of shear strength parameters increasing with depth is highlighted. Slope reliability considering spatial variability is studied. Mean trend of shear strength parameters influences slope reliability significantly. Ignoring increasing trend of shear strength overestimates probability of failure. Critical slip surface lies at the bottom of sandy slope for a constant mean trend.
Abstract This paper studies the reliability of infinite slopes in the presence of spatially variable shear strength parameters that increase linearly with depth. The mean trend of the shear strength parameters increasing with depth is highlighted. The spatial variability in the undrained shear strength and the friction angle is modeled using random field theory. Infinite slope examples are presented to investigate the effect of spatial variability on the depth of critical slip line and the probability of failure. The results indicate that the mean trend of the shear strength parameters has a significant influence on clay slope reliability. The probability of failure will be overestimated if a linearly increasing trend underlying the shear strength parameters is ignored. The possibility of critical slip lines occurring at the bottom of the slope decreases considerably when the mean trend of undrained shear strength is considered. The linearly increasing mean trend of the friction angle has a considerable effect on the distribution of the critical failure depths of sandy slopes. The most likely critical slip line only lies at the bottom of the sandy slope under the special case of a constant mean trend.
Effect of spatially variable shear strength parameters with linearly increasing mean trend on reliability of infinite slopes
Li, Dian-Qing (Autor:in) / Qi, Xiao-Hui (Autor:in) / Phoon, Kok-Kwang (Autor:in) / Zhang, Li-Min (Autor:in) / Zhou, Chuang-Bing (Autor:in)
Structural Safety ; 49 ; 45-55
01.01.2013
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2014
Probabilistic stability analyses of undrained slopes with linearly increasing mean strength
| Online Contents | 2017