应变软化边坡渐进破坏模式及稳定性可靠度

何成; 唐辉明; 申培武; 苏雪雪

doi:10.3799/dqkx.2020.058

Volume 46 Issue 2

Feb. 2021

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Article Navigation > Earth Science > 2021 > 46(2): 697-707

He Cheng, Tang Huiming, Shen Peiwu, Su Xuexue, 2021. Progressive Failure Mode and Stability Reliability of Strain-Softening Slope. Earth Science, 46(2): 697-707. doi: 10.3799/dqkx.2020.058

Citation:

He Cheng, Tang Huiming, Shen Peiwu, Su Xuexue, 2021. Progressive Failure Mode and Stability Reliability of Strain-Softening Slope. Earth Science, 46(2): 697-707. doi: 10.3799/dqkx.2020.058

He Cheng, Tang Huiming, Shen Peiwu, Su Xuexue, 2021. Progressive Failure Mode and Stability Reliability of Strain-Softening Slope. Earth Science, 46(2): 697-707. doi: 10.3799/dqkx.2020.058

Citation:

He Cheng, Tang Huiming, Shen Peiwu, Su Xuexue, 2021. Progressive Failure Mode and Stability Reliability of Strain-Softening Slope. Earth Science, 46(2): 697-707. doi: 10.3799/dqkx.2020.058

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Progressive Failure Mode and Stability Reliability of Strain-Softening Slope

doi: 10.3799/dqkx.2020.058

He Cheng^{1
,
,},
Tang Huiming^{1, 2
,
,
,},
Shen Peiwu¹,
Su Xuexue¹

1.
Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
2.
Three Gorges Research Center for Geo-Hazard of Ministry of Education, China University of Geosciences, Wuhan 430074, China

Received Date: 2019-10-17
Publish Date: 2021-02-15

Abstract

Abstract

Aiming at the shortcomings of the calculation assumptions proposed in the existing slope progressive failure analysis model considering the effect of strain-softening, the Zhaoshuling landslide in the Three Gorges Reservoir area is taken as the research object, and the influence of groundwater level fluctuations and seismic forces is considered to propose the progressive failure mode and stability reliability analysis method of strain-softening slope under multi-field coupling conditions.The results show that the groundwater level fluctuation and seismic force would affect the progressive failure mode and failure probability of the landslide to various degrees.The landslide was stable at 145 m, 175 m water level and the steeply reduced reservoir water level from 175 m to 145 m, but it had a local progressive failure probability with 14.119%, 20.266% and 21.797% respectively. And the landslide had a total progressive failure probability with 34.067%, 38.061% and 38.405% respectively under the action of seismic force with intensity VII, also three kinds of water storage conditions were considered. Moreover, according to the progressive failure mode of landslide, it is pointed out that the best reinforcement position should be at the front of Yanjiang Avenue. The analysis method is reliable and can provide a reference for the progressive failure mode and stability evaluation of slopes.
- strain-softening effect,
- uncertainty of geotechnical parameter,
- progressive failure,
- stability,
- engineering geology

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References(70)

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