Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained Slopes
The stability of the two-layer undrained clay slopes should be given considerable attention since they are commonly observed in nature and in manmade structures, and they traditionally have low stability. Therefore, with the elastoplastic finite element method, this paper thoroughly explores the inf...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/4253026 |
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| author | Shuangfeng Guo Ning Li Wenpeng Liu Zongyuan Ma Naifei Liu Gao Lv |
| author_facet | Shuangfeng Guo Ning Li Wenpeng Liu Zongyuan Ma Naifei Liu Gao Lv |
| author_sort | Shuangfeng Guo |
| collection | DOAJ |
| description | The stability of the two-layer undrained clay slopes should be given considerable attention since they are commonly observed in nature and in manmade structures, and they traditionally have low stability. Therefore, with the elastoplastic finite element method, this paper thoroughly explores the influence of the soil strength parameter cu, slope angle β, and slope depth ratio DH on the slope stability and failure mechanisms by the wide-ranging parametric changes. The aims of this study are also to find the critical strength ratio (cu2/cu1)crit and the maximum values of the stability number Nc that were observed in the parametric studies. Numerical results are displayed in the form of charts to give Nc and (cu2/cu1)crit as a function of cu, β, and DH. Moreover, influences of DH and β on Nc and failure mechanisms are examined in this study. The results of numerical analysis demonstrate that cu2/cu1 significantly affects both the critical failure mechanism and the stability of the two-layer undrained slope. Improved knowledge of the location of the critical failure mechanism allows for accurately estimating the stability of the two-layer undrained slopes for future strengthening measurements to preserve stability. |
| format | Article |
| id | doaj-art-6457cc66399d41d2a945658dbee4d5eb |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-6457cc66399d41d2a945658dbee4d5eb2025-02-03T06:06:31ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/42530264253026Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained SlopesShuangfeng Guo0Ning Li1Wenpeng Liu2Zongyuan Ma3Naifei Liu4Gao Lv5State Key Laboratory of Eco-hydraulics in Northwest Arid Region, X’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region, X’an University of Technology, Xi’an, Shaanxi 710048, ChinaEarth Mechanical Institute, Department of Mining Engineering, Colorado School of Mines, Golden, CO 80401, USAState Key Laboratory of Eco-hydraulics in Northwest Arid Region, X’an University of Technology, Xi’an, Shaanxi 710048, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, ChinaMechanical Engineering College, Xi’an Shiyou University, Xi’an, Shaanxi 710065, ChinaThe stability of the two-layer undrained clay slopes should be given considerable attention since they are commonly observed in nature and in manmade structures, and they traditionally have low stability. Therefore, with the elastoplastic finite element method, this paper thoroughly explores the influence of the soil strength parameter cu, slope angle β, and slope depth ratio DH on the slope stability and failure mechanisms by the wide-ranging parametric changes. The aims of this study are also to find the critical strength ratio (cu2/cu1)crit and the maximum values of the stability number Nc that were observed in the parametric studies. Numerical results are displayed in the form of charts to give Nc and (cu2/cu1)crit as a function of cu, β, and DH. Moreover, influences of DH and β on Nc and failure mechanisms are examined in this study. The results of numerical analysis demonstrate that cu2/cu1 significantly affects both the critical failure mechanism and the stability of the two-layer undrained slope. Improved knowledge of the location of the critical failure mechanism allows for accurately estimating the stability of the two-layer undrained slopes for future strengthening measurements to preserve stability.http://dx.doi.org/10.1155/2020/4253026 |
| spellingShingle | Shuangfeng Guo Ning Li Wenpeng Liu Zongyuan Ma Naifei Liu Gao Lv Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained Slopes Advances in Materials Science and Engineering |
| title | Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained Slopes |
| title_full | Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained Slopes |
| title_fullStr | Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained Slopes |
| title_full_unstemmed | Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained Slopes |
| title_short | Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained Slopes |
| title_sort | influence of both soil properties and geometric parameters on failure mechanisms and stability of two layer undrained slopes |
| url | http://dx.doi.org/10.1155/2020/4253026 |
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