Discrete mechanism for upper bound analysis of nonhomogeneous slopes

被引：0
|
作者：
Sun Z. [1 ]
Pan Q. [2 ]
Yang X. [3 ]
Hou C. [1 ]
Shang M. [1 ]
机构：
[1] School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, 230009, Anhui
[2] Laboratory 3SR, Grenoble Alpes University, Grenoble
[3] School of Civil Engineering, Central South University, Changsha, 410075, Hunan
来源：
| 1680年 / Academia Sinica卷 / 36期
关键词：
Failure mechanism; Nonhomogeneous slope; Slope engineering; Stability analysis; Upper bound analysis;
D O I：
10.13722/j.cnki.jrme.2016.1565
中图分类号：
学科分类号：
摘要：
A new mechanism of two-dimensional failure was proposed for the upper bound analysis of nonhomogeneous slopes with the friction angle varying spatially. This failure mechanism obeys the associated flow rule and geometry uniform condition and was established based on the idea of discretized slip surface. The velocity discontinuity surface was generated point by point. The rate of external work and the internal energy dissipation were derived. The critical height of the slope was derived through the methods of sequential quadratic programming(SQP) and bisection searching. The effectiveness of the presented method was verified in homogeneous, anisotropic and nonhomogeneous conditions respectively. Finally, the critical height of the nonhomogeneous slope was analyzed using the failure mechanism with the friction angle increases linearly with the depth. The results show that the nonhomogeneous coefficient of friction angle has the significant effect on the critical height. © 2017, Science Press. All right reserved.
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页码：1680 / 1688
页数：8
相关论文
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