Stability Assessment of Multi-Stage Slopes Considering Local Failure
The analytical method for slope stability analysis requires a collapse mechanism in advance. The collapse mechanism for a multi-staged slope is generally assumed to be overall failure, whereas this kind of slope may suffer from local failure. However, a local failure is rarely reported in the previo...
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Format: | Article |
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Frontiers Media S.A.
2022-06-01
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Series: | Frontiers in Earth Science |
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Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.798791/full |
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author | Haochen Wu Miaojun Sun Jinnan Wang |
author_facet | Haochen Wu Miaojun Sun Jinnan Wang |
author_sort | Haochen Wu |
collection | DOAJ |
description | The analytical method for slope stability analysis requires a collapse mechanism in advance. The collapse mechanism for a multi-staged slope is generally assumed to be overall failure, whereas this kind of slope may suffer from local failure. However, a local failure is rarely reported in the previous research for multi-staged slopes, which may result in an overestimate for slope stability. To this end, local failure is incorporated into the collapse mechanism for the first time, so as to develop a complete approach to assess the stability of multi-stage slopes. The modified pseudo-dynamic method is conducted to properly account for seismic effects. Thanks to the limit analysis method and strength reduction technique, the safety factor of a multi-stage slope is obtained. The result obtained by the presented approach shows a good agreement with that of previous literature and numerical calculations. The collapse mechanism of multi-stage slopes is studied, and the safety factor is presented schematically for a wide range of parameters. The results show that the local failure for a multi-stage slope often manifests under the intense seismic effects. |
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format | Article |
id | doaj.art-e07f49528f094e91abb85364d31272c3 |
institution | Directory Open Access Journal |
issn | 2296-6463 |
language | English |
last_indexed | 2024-04-12T13:22:17Z |
publishDate | 2022-06-01 |
publisher | Frontiers Media S.A. |
record_format | Article |
series | Frontiers in Earth Science |
spelling | doaj.art-e07f49528f094e91abb85364d31272c32022-12-22T03:31:27ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-06-011010.3389/feart.2022.798791798791Stability Assessment of Multi-Stage Slopes Considering Local FailureHaochen Wu0Miaojun Sun1Jinnan Wang2Zhejiang Provincial Seaport Investment & Operation Group Co., Ltd., Ningbo, ChinaPowerchina Huadong Engineering Corporation Limited, Zhejiang Engineering Research Center of Marine Geotechnical Investigation Technology and Equipment, Hangzhou, ChinaSchool of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, ChinaThe analytical method for slope stability analysis requires a collapse mechanism in advance. The collapse mechanism for a multi-staged slope is generally assumed to be overall failure, whereas this kind of slope may suffer from local failure. However, a local failure is rarely reported in the previous research for multi-staged slopes, which may result in an overestimate for slope stability. To this end, local failure is incorporated into the collapse mechanism for the first time, so as to develop a complete approach to assess the stability of multi-stage slopes. The modified pseudo-dynamic method is conducted to properly account for seismic effects. Thanks to the limit analysis method and strength reduction technique, the safety factor of a multi-stage slope is obtained. The result obtained by the presented approach shows a good agreement with that of previous literature and numerical calculations. The collapse mechanism of multi-stage slopes is studied, and the safety factor is presented schematically for a wide range of parameters. The results show that the local failure for a multi-stage slope often manifests under the intense seismic effects.https://www.frontiersin.org/articles/10.3389/feart.2022.798791/fullmulti-stage slopeoverall failurelocal failureseismic effectmodified pseudo-dynamic approach |
spellingShingle | Haochen Wu Miaojun Sun Jinnan Wang Stability Assessment of Multi-Stage Slopes Considering Local Failure Frontiers in Earth Science multi-stage slope overall failure local failure seismic effect modified pseudo-dynamic approach |
title | Stability Assessment of Multi-Stage Slopes Considering Local Failure |
title_full | Stability Assessment of Multi-Stage Slopes Considering Local Failure |
title_fullStr | Stability Assessment of Multi-Stage Slopes Considering Local Failure |
title_full_unstemmed | Stability Assessment of Multi-Stage Slopes Considering Local Failure |
title_short | Stability Assessment of Multi-Stage Slopes Considering Local Failure |
title_sort | stability assessment of multi stage slopes considering local failure |
topic | multi-stage slope overall failure local failure seismic effect modified pseudo-dynamic approach |
url | https://www.frontiersin.org/articles/10.3389/feart.2022.798791/full |
work_keys_str_mv | AT haochenwu stabilityassessmentofmultistageslopesconsideringlocalfailure AT miaojunsun stabilityassessmentofmultistageslopesconsideringlocalfailure AT jinnanwang stabilityassessmentofmultistageslopesconsideringlocalfailure |