Class Ratio Transform with an Application to Describing the Roughness Anisotropy of Natural Rock Joints
In this study, we explore the potential of class ratio transform with an application to describing the roughness anisotropy of natural rock joints. Roughness smooth coefficient, used for suitably smoothing the roughness parameter values to realize an anisotropic model, is proposed to represent the a...
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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 Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/5069627 |
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| author | Rui Yong Lei Huang Qinkuan Hou Shigui Du |
| author_facet | Rui Yong Lei Huang Qinkuan Hou Shigui Du |
| author_sort | Rui Yong |
| collection | DOAJ |
| description | In this study, we explore the potential of class ratio transform with an application to describing the roughness anisotropy of natural rock joints. Roughness smooth coefficient, used for suitably smoothing the roughness parameter values to realize an anisotropic model, is proposed to represent the apparent anisotropy of surface roughness. The geometric irregularities of roughness parameters in polar plots allow transforming to a regular roughness asperity pattern, which can be readily approximated by the ellipse function. The joint roughness coefficients in different orientations of natural rock joints were measured and revealed to be identical after applying the smoothing process using the class ratio transform method. The results show that the roughness smooth coefficient increases with sample size but decreases as azimuthal interval narrows. This method demonstrates the ability in describing the roughness anisotropy and inferring the roughness parameters Z2, Rp, and θmax∗/C+12 D. |
| format | Article |
| id | doaj-art-9d7456807eef4b21ad080357021ee13a |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-9d7456807eef4b21ad080357021ee13a2025-08-20T02:20:17ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/50696275069627Class Ratio Transform with an Application to Describing the Roughness Anisotropy of Natural Rock JointsRui Yong0Lei Huang1Qinkuan Hou2Shigui Du3Zhejiang Collaborative Innovation Centre for Prevention and Control of Mountain Geological Hazards, Shaoxing University, Shaoxing, Zhejiang 312000, ChinaThree Gorges Research Center for Geohazards, Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, ChinaZhejiang Collaborative Innovation Centre for Prevention and Control of Mountain Geological Hazards, Shaoxing University, Shaoxing, Zhejiang 312000, ChinaZhejiang Collaborative Innovation Centre for Prevention and Control of Mountain Geological Hazards, Shaoxing University, Shaoxing, Zhejiang 312000, ChinaIn this study, we explore the potential of class ratio transform with an application to describing the roughness anisotropy of natural rock joints. Roughness smooth coefficient, used for suitably smoothing the roughness parameter values to realize an anisotropic model, is proposed to represent the apparent anisotropy of surface roughness. The geometric irregularities of roughness parameters in polar plots allow transforming to a regular roughness asperity pattern, which can be readily approximated by the ellipse function. The joint roughness coefficients in different orientations of natural rock joints were measured and revealed to be identical after applying the smoothing process using the class ratio transform method. The results show that the roughness smooth coefficient increases with sample size but decreases as azimuthal interval narrows. This method demonstrates the ability in describing the roughness anisotropy and inferring the roughness parameters Z2, Rp, and θmax∗/C+12 D.http://dx.doi.org/10.1155/2020/5069627 |
| spellingShingle | Rui Yong Lei Huang Qinkuan Hou Shigui Du Class Ratio Transform with an Application to Describing the Roughness Anisotropy of Natural Rock Joints Advances in Civil Engineering |
| title | Class Ratio Transform with an Application to Describing the Roughness Anisotropy of Natural Rock Joints |
| title_full | Class Ratio Transform with an Application to Describing the Roughness Anisotropy of Natural Rock Joints |
| title_fullStr | Class Ratio Transform with an Application to Describing the Roughness Anisotropy of Natural Rock Joints |
| title_full_unstemmed | Class Ratio Transform with an Application to Describing the Roughness Anisotropy of Natural Rock Joints |
| title_short | Class Ratio Transform with an Application to Describing the Roughness Anisotropy of Natural Rock Joints |
| title_sort | class ratio transform with an application to describing the roughness anisotropy of natural rock joints |
| url | http://dx.doi.org/10.1155/2020/5069627 |
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