Effect of spatial variability of shear strength on reliability of infinite slopes using analytical approach

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• 作者：Jing-Sen Cai^a ; E-Chuan Yan^a ; Tian-Chyi Jim Yeh^b ; ^c ; ^{yeh@hwr.arizona.edu" class="auth_mail" title="E-mail the corresponding author} ; Yuan-Yuan Zha^d ; Yue Liang^e ; Shao-Yang Huang^f ; Wen-Ke Wang^h ; Jet-Chau Wen^f ; ^g
• 关键词：Infinite slope ; Slope stability ; Shear strength ; Spatial variability ; Analytical approach ; Reliability
• 刊名：Computers and Geotechnics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：81
• 期：Complete
• 页码：77-86
• 全文大小：727 K

文摘

This paper develops an analytical approach for reliability analysis of infinite slope stability in presence of spatially variable shear strength parameters. The analytical approach considers spatial autocorrelation of each parameter and cross-correlations between different parameters. It is robust, computational efficient and provides insight to the importance of spatial correlation scale on slope reliability analysis. This paper also explores the difference in continuous and discrete random fields and emphasizes the importance of fine discretization in relation to correlation scale. Finally, it shows that conditioning the stability analysis with information about trends and spatial data leads to reliability assessments with less uncertainty.