Influence of Structural Plane Microscopic Parameters on Direct Shear Strength
Structural plane is a key factor in controlling the stability of rock mass engineering. To study the influence of structural plane microscopic parameters on direct shear strength, this paper established the direct shear mechanical model of the structural plane by using the discrete element code PFC2...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/9178140 |
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| author | Yanhui Cheng Weijun Yang Dongliang He |
| author_facet | Yanhui Cheng Weijun Yang Dongliang He |
| author_sort | Yanhui Cheng |
| collection | DOAJ |
| description | Structural plane is a key factor in controlling the stability of rock mass engineering. To study the influence of structural plane microscopic parameters on direct shear strength, this paper established the direct shear mechanical model of the structural plane by using the discrete element code PFC2D. From the mesoscopic perspective, the research on the direct shear test for structural plane has been conducted. The bonding strength and friction coefficient of the structural plane are investigated, and the effect of mesoscopic parameters on the shear mechanical behavior of the structural plane has been analyzed. The results show that the internal friction angle φ of the structural plane decreases with the increase of particle contact stiffness ratio. However, the change range of cohesion is small. The internal friction angle decreases first and then increases with the increase of parallel bond stiffness ratio. The influence of particle contact modulus EC on cohesion c is relatively small. The internal friction angle obtained by the direct shear test is larger than that obtained by the triaxial compression test. Parallel bond elastic modulus has a stronger impact on friction angle φ than that on cohesion c. Under the same normal stress conditions, the shear strength of the specimens increases with particle size. The shear strength of the specimen gradually decreases with the increase of the particle size ratio. |
| format | Article |
| id | doaj-art-632d4b15f9654a7e89876fc3e6b129c4 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-632d4b15f9654a7e89876fc3e6b129c42025-02-03T01:24:30ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/91781409178140Influence of Structural Plane Microscopic Parameters on Direct Shear StrengthYanhui Cheng0Weijun Yang1Dongliang He2School of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaSchool of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaSchool of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaStructural plane is a key factor in controlling the stability of rock mass engineering. To study the influence of structural plane microscopic parameters on direct shear strength, this paper established the direct shear mechanical model of the structural plane by using the discrete element code PFC2D. From the mesoscopic perspective, the research on the direct shear test for structural plane has been conducted. The bonding strength and friction coefficient of the structural plane are investigated, and the effect of mesoscopic parameters on the shear mechanical behavior of the structural plane has been analyzed. The results show that the internal friction angle φ of the structural plane decreases with the increase of particle contact stiffness ratio. However, the change range of cohesion is small. The internal friction angle decreases first and then increases with the increase of parallel bond stiffness ratio. The influence of particle contact modulus EC on cohesion c is relatively small. The internal friction angle obtained by the direct shear test is larger than that obtained by the triaxial compression test. Parallel bond elastic modulus has a stronger impact on friction angle φ than that on cohesion c. Under the same normal stress conditions, the shear strength of the specimens increases with particle size. The shear strength of the specimen gradually decreases with the increase of the particle size ratio.http://dx.doi.org/10.1155/2018/9178140 |
| spellingShingle | Yanhui Cheng Weijun Yang Dongliang He Influence of Structural Plane Microscopic Parameters on Direct Shear Strength Advances in Civil Engineering |
| title | Influence of Structural Plane Microscopic Parameters on Direct Shear Strength |
| title_full | Influence of Structural Plane Microscopic Parameters on Direct Shear Strength |
| title_fullStr | Influence of Structural Plane Microscopic Parameters on Direct Shear Strength |
| title_full_unstemmed | Influence of Structural Plane Microscopic Parameters on Direct Shear Strength |
| title_short | Influence of Structural Plane Microscopic Parameters on Direct Shear Strength |
| title_sort | influence of structural plane microscopic parameters on direct shear strength |
| url | http://dx.doi.org/10.1155/2018/9178140 |
| work_keys_str_mv | AT yanhuicheng influenceofstructuralplanemicroscopicparametersondirectshearstrength AT weijunyang influenceofstructuralplanemicroscopicparametersondirectshearstrength AT donglianghe influenceofstructuralplanemicroscopicparametersondirectshearstrength |