Stability analysis of a clay slope accounting for the rotated anisotropy correlation structure

被引：0
|
作者：
Cheng H. [1 ,2 ]
Chen J. [1 ,2 ]
Wang Z. [3 ]
Hu Z. [1 ,2 ]
Huang J. [1 ,2 ]
机构：
[1] State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Wuhan, 430071, Hubei
[2] University of Chinese Academy of Sciences, Beijing
[3] Research Institute of Science and Technology, China Railway Eryuan Engineering Group Co., Ltd., Chengdu, 610013, Sichuan
来源：
Chen, Jian (jchen@whrsm.ac.cn) | 2017年 / Academia Sinica卷 / 36期
基金：
中国国家自然科学基金;
关键词：
Random field; Rotated anisotropy; Sliding surface; Slope engineering; Slope stability; Spatial variability;
D O I：
10.13722/j.cnki.jrme.2017.0044
中图分类号：
学科分类号：
摘要：
Currently the studies of slope stability accounting for the spatial variability of soil properties are mainly concentrated on isotropy and transverse isotropy correlation structures. Considering the disadvantage, the influence of the rotated anisotropy correlation structure on clay slope was investigated in this paper. Based on random field theory, the rotated anisotropy random fields of soil parameters are simulated and set up using the covariance matrix decomposition method. Combining with the numerical approach, slope reliability was then explored. The results show that the rotated anisotropy correlation structure has a dual effect on slope stability in comparison to the transverse isotropy case, and the stronger effect for higher anisotropy. The mean of factor of safety obtained by stochastic analysis is less than the deterministic solution. The calculated coefficient of variation of factor of safety is less than that of undrained shear strength of clay. Three types of sliding surfaces are obtained, and the largest proportion occurring is the base sliding which is same as the deterministic results. © 2017, Science Press. All right reserved.
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页码：3965 / 3973
页数：8
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