首页|Upper-Bound Limit Analysis of the Multi-Layer Slope Stability and Failure Mode Based on Generalized Horizontal Slice Method

Upper-Bound Limit Analysis of the Multi-Layer Slope Stability and Failure Mode Based on Generalized Horizontal Slice Method

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Multi-layer slopes are widely found in clay residue receiving fields. A generalized hori-zontal slice method (GHSM) for assessing the stability of multi-layer slopes that considers the energy dissipation between adjacent horizontal slices is presented. In view of the upper-bound limit analysis theory, the energy equation is derived and the ultimate failure mode is generated by comparing the slid-ing surface passing through the slope toe (mode A) with that below (mode B). In addition, the influence of the number of slices on the stability coefficients in the GHSM is studied and the stable value is ob-tained. Compared to the original method (Chen's method), the GHSM can acquire more precise re-sults, which takes into account the energy dissipation in the inner sliding soil mass. Moreover, the GHSM, limit equilibrium method (LEM) and numerical simulation method (NSM) are applied to ana-lyze the stability of a multi-layer slope with different slope angles and the results of the safety factor and failure mode are very close in each case. The ultimate failure modes are shown to be mode B when the slope angle is not more than 28°. It illustrates that the determination of the ultimate sliding surface requires comparison of multiple failure modes, not only mode A.

stability and failure modeslope stabilitygeneralized horizontal slice methodupper-bound limit analysisenergy dissipationgeotechnical engineering

Huawei Zhang、Changdong Li、Wenqiang Chen、Ni Xie、Guihua Wang、Wenmin Yao、Xihui Jiang、Jingjing Long

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Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Changjiang River Scientific Research Institute, Wuhan 430010, China

Faculty of Engineering, China University of Geosciences, Wuhan 430074, China

Badong National Observation and Research Station of Geohazards, China University of Geosciences, Wuhan 430074, China

School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China

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National Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities,China University of Geosciences(Wuhan)

2017YFC1501304420900544192205541931295CUGGC09

2024

10.1007/s12583-022-1626-0

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(3)
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