Determination of the Peak and Residual Shear Strengths of the Sandwich Material in Slopes
The mudded weak interlayer is a geotechnical sandwich material exhibiting strain softening behavior, which plays an important part in the slope stability. The present work primarily focuses on the shear strength of the mudded weak interlayer in rock slopes. To determine the peak and residual shear s...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/9641258 |
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| author | Qijun Hu Qijie Cai Leping He Xiaoqiang Yang Tao Ye Rendan Shi |
| author_facet | Qijun Hu Qijie Cai Leping He Xiaoqiang Yang Tao Ye Rendan Shi |
| author_sort | Qijun Hu |
| collection | DOAJ |
| description | The mudded weak interlayer is a geotechnical sandwich material exhibiting strain softening behavior, which plays an important part in the slope stability. The present work primarily focuses on the shear strength of the mudded weak interlayer in rock slopes. To determine the peak and residual shear strengths of the mudded weak interlayers, the particle flow code (PFC) is used to simulate the failure behavior during the direct shear tests. Laboratory investigations including uniaxial compression test, SEM, and 3D deformation measurement are employed to calibrate the essential micro parameters of the mudded weak interlayer during the simulation process in PFC. The numerical model is built based on these parameters and both the peak and residual shear strengths can be predicted from the model. The prediction results show that the peak and residual internal friction angle are 19.36° and 14.61°, while the peak and residual cohesion are 22.33 kPa and 2.73 kPa, respectively. Moreover, to validate the obtained peak and residual strengths, the results are compared with literature data. The peak and residual shear strengths of the mudded weak interlayer can serve as an important benchmark to evaluate the stability of side slopes and provide guiding suggestions for their reinforcement. |
| format | Article |
| id | doaj-art-e98f0148abc54818a46f081cffb8deb2 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-e98f0148abc54818a46f081cffb8deb22025-02-03T06:14:08ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/96412589641258Determination of the Peak and Residual Shear Strengths of the Sandwich Material in SlopesQijun Hu0Qijie Cai1Leping He2Xiaoqiang Yang3Tao Ye4Rendan Shi5School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Transportation and Logistics, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, ChinaThe mudded weak interlayer is a geotechnical sandwich material exhibiting strain softening behavior, which plays an important part in the slope stability. The present work primarily focuses on the shear strength of the mudded weak interlayer in rock slopes. To determine the peak and residual shear strengths of the mudded weak interlayers, the particle flow code (PFC) is used to simulate the failure behavior during the direct shear tests. Laboratory investigations including uniaxial compression test, SEM, and 3D deformation measurement are employed to calibrate the essential micro parameters of the mudded weak interlayer during the simulation process in PFC. The numerical model is built based on these parameters and both the peak and residual shear strengths can be predicted from the model. The prediction results show that the peak and residual internal friction angle are 19.36° and 14.61°, while the peak and residual cohesion are 22.33 kPa and 2.73 kPa, respectively. Moreover, to validate the obtained peak and residual strengths, the results are compared with literature data. The peak and residual shear strengths of the mudded weak interlayer can serve as an important benchmark to evaluate the stability of side slopes and provide guiding suggestions for their reinforcement.http://dx.doi.org/10.1155/2017/9641258 |
| spellingShingle | Qijun Hu Qijie Cai Leping He Xiaoqiang Yang Tao Ye Rendan Shi Determination of the Peak and Residual Shear Strengths of the Sandwich Material in Slopes Advances in Materials Science and Engineering |
| title | Determination of the Peak and Residual Shear Strengths of the Sandwich Material in Slopes |
| title_full | Determination of the Peak and Residual Shear Strengths of the Sandwich Material in Slopes |
| title_fullStr | Determination of the Peak and Residual Shear Strengths of the Sandwich Material in Slopes |
| title_full_unstemmed | Determination of the Peak and Residual Shear Strengths of the Sandwich Material in Slopes |
| title_short | Determination of the Peak and Residual Shear Strengths of the Sandwich Material in Slopes |
| title_sort | determination of the peak and residual shear strengths of the sandwich material in slopes |
| url | http://dx.doi.org/10.1155/2017/9641258 |
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