Three-Dimensional Slope Stability Analysis of Convex Turning Corners

被引：21

作者：

Zhang, Fei ^{[1
,2
]}

Leshchinsky, Dov ^{[3
,4
]}

Gao, Yufeng ^{[1
,2
]}

Yang, Shangchuan ^{[5
]}

机构：

[1] Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing 210098, Jiangsu, Peoples R China

[2] Jiangsu Prov Geotech Res Ctr, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China

[3] Univ Delaware, Dept Civil & Environm Engn, Newark, DE 19716 USA

[4] ADAMA Engn, 12042 SE Sunnyside Rd,Suite 711, Clackamas, OR 97015 USA

[5] Southwest Jiaotong Univ, Dept Geotech Engn, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China

来源：

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING | 2018年 / 144卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Slope stability; Corner; Three-dimensional (3D) analysis; Limit equilibrium; Stability chart; FINITE-ELEMENT-ANALYSIS; STRENGTH-REDUCTION; LIMIT EQUILIBRIUM; 3D; CHARTS;

D O I：

10.1061/(ASCE)GT.1943-5606.0001896

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Slopes forming convex corners are often constructed in practice. Observed failures of such corners possess three-dimensional (3D) characteristics. Hence, assessing corner stability requires 3D analysis. This study used a variationally derived 3D mechanism to analyze the stability of convex turning corners. Results of 3D stability analysis are presented in a convenient form of stability charts considering the effects of pore-water pressure and seismicity. These charts allow for a quick assessment of the 3D factor of safety. Stability of a convex corner increases as its angle decreases. When corners are subjected to localized loading conditions, its stability could be more critical than the straight slopes forming the corner. Comparisons between the current method and results from existing analytical and numerical studies are conducted. (C) 2018 American Society of Civil Engineers.

引用

页数：7

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