A direction-dependent shear strength criterion for rock joints with two new roughness parameters
The surface morphology of a rock joint is closely related to its mechanical properties. To reasonably characterize a rock surface, two new roughness parameters were proposed in this paper. One is related to the average slope angle of asperities that contribute to the shear strength, and the other re...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Springer
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/72292 |
| _version_ | 1848762711313219584 |
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| author | Ban, L. Qi, C. Lu, Chunsheng |
| author_facet | Ban, L. Qi, C. Lu, Chunsheng |
| author_sort | Ban, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The surface morphology of a rock joint is closely related to its mechanical properties. To reasonably characterize a rock surface, two new roughness parameters were proposed in this paper. One is related to the average slope angle of asperities that contribute to the shear strength, and the other reflects the frictional behavior of asperities that is defined as the maximum possible contact area in the shear direction. Taking the standard joint roughness coefficient profiles as example, these two roughness parameters can be applied to describe the directional characteristics of shear strength. Based on their relationships with initial dilation angles, the proposed roughness parameters were incorporated into a peak shear strength criterion. It is shown that the predicted peak shear strength is consistent with experimental data, and there is a power–law relationship. The application range of new roughness parameters was determined, which may facilitate a measurement process. |
| first_indexed | 2025-11-14T10:51:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-72292 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:51:54Z |
| publishDate | 2018 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-722922019-02-20T05:49:31Z A direction-dependent shear strength criterion for rock joints with two new roughness parameters Ban, L. Qi, C. Lu, Chunsheng The surface morphology of a rock joint is closely related to its mechanical properties. To reasonably characterize a rock surface, two new roughness parameters were proposed in this paper. One is related to the average slope angle of asperities that contribute to the shear strength, and the other reflects the frictional behavior of asperities that is defined as the maximum possible contact area in the shear direction. Taking the standard joint roughness coefficient profiles as example, these two roughness parameters can be applied to describe the directional characteristics of shear strength. Based on their relationships with initial dilation angles, the proposed roughness parameters were incorporated into a peak shear strength criterion. It is shown that the predicted peak shear strength is consistent with experimental data, and there is a power–law relationship. The application range of new roughness parameters was determined, which may facilitate a measurement process. 2018 Journal Article http://hdl.handle.net/20.500.11937/72292 10.1007/s12517-018-3818-6 Springer restricted |
| spellingShingle | Ban, L. Qi, C. Lu, Chunsheng A direction-dependent shear strength criterion for rock joints with two new roughness parameters |
| title | A direction-dependent shear strength criterion for rock joints with two new roughness parameters |
| title_full | A direction-dependent shear strength criterion for rock joints with two new roughness parameters |
| title_fullStr | A direction-dependent shear strength criterion for rock joints with two new roughness parameters |
| title_full_unstemmed | A direction-dependent shear strength criterion for rock joints with two new roughness parameters |
| title_short | A direction-dependent shear strength criterion for rock joints with two new roughness parameters |
| title_sort | direction-dependent shear strength criterion for rock joints with two new roughness parameters |
| url | http://hdl.handle.net/20.500.11937/72292 |