Stability Analysis of Slope with Complex Spacial Shape

WU Xiaofei; YANG Tao; WU Kunlu; LI Hui; AI Yang; SHEN Shaohua; WANG Ying

doi:10.3969/j.issn.0258-2724.2018.04.013

Volume 31 Issue 4

Jul. 2018

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Journal of Southwest Jiaotong University > 2018 > 53(4): 756-761.

JIANG Wei, SU Qian, ZHANG Xiaoxi, ZHOU Heng. Determination Method of Slip Surface of Reinforced Soil Slope Subjected to Seismic Load[J]. Journal of Southwest Jiaotong University, 2015, 28(1): 156-160. doi: 10.3969/j.issn.0258-2724.2015.01.023

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WU Xiaofei, YANG Tao, WU Kunlu, LI Hui, AI Yang, SHEN Shaohua, WANG Ying. Stability Analysis of Slope with Complex Spacial Shape[J]. Journal of Southwest Jiaotong University, 2018, 53(4): 756-761. doi: 10.3969/j.issn.0258-2724.2018.04.013

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Stability Analysis of Slope with Complex Spacial Shape

doi: 10.3969/j.issn.0258-2724.2018.04.013

WU Xiaofei¹,
YANG Tao^{1
,
,},
WU Kunlu¹,
LI Hui²,
AI Yang¹,
SHEN Shaohua³,
WANG Ying^4,5

Received Date: 07 Dec 2017
Publish Date: 01 Aug 2018

Abstract

Abstract

Based on the three-dimensional point safety factor, a three-step point safety factor approach is proposed using three-dimensional numerical analysis to evaluate the stability of slope with complex spacial shape. First, the displacement field of slope in critical state is calculated with the reduced shear strength parameters of slope mass to obtain the critical state or large deformation state of slope using the strength reduction method. Second, the stress field of slope in current state is calculated by setting actual physical and mechanical parameters of slope mass. Finally, point safety factors of slope are obtained according to results of the displacement field in critical state and the stress field in current state. The proposed method is applied in the high slope project along the transportation road at Zhenfeng Coal-Fired Power Plant, Guizhou Province. It is shown that, the global safety factor of the unreinforced high slope is greater than the design value of 1.35, but the local safety factor at the toe is less than the design safety factor. Also, the local stability of the slope is markedly improved and its point safety factors are greater than 1.35 after the lower two levels of the high slope are reinforced by 8 m long and 25 mm in diameter anchors with a space of 2.0 m according to the distribution characteristics of point safety factors.
- high slope,
- stability analysis,
- point safety factor,
- numerical computation,
- complex spacial shape

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References(16)

References

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Stability Analysis of Slope with Complex Spacial Shape

doi: 10.3969/j.issn.0258-2724.2018.04.013