Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed Basalt
Columnar jointed basalts (CJB) are featured by the joint network of discontinuities, which is hard for geotechnical design and construction. Therefore, investigating the mechanical behaviors of CJB is significant for the long-term use of the engineering structures. In this paper, field research stud...
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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/10.1155/2020/6659718 |
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| author | Shiyi Zhu Changdi He Fei Peng Anchi Shi Dongyang Yuan Weikang Zhang |
| author_facet | Shiyi Zhu Changdi He Fei Peng Anchi Shi Dongyang Yuan Weikang Zhang |
| author_sort | Shiyi Zhu |
| collection | DOAJ |
| description | Columnar jointed basalts (CJB) are featured by the joint network of discontinuities, which is hard for geotechnical design and construction. Therefore, investigating the mechanical behaviors of CJB is significant for the long-term use of the engineering structures. In this paper, field research studies, such as the rigid bearing plate tests and acoustic tests, were employed, to obtain the deformation modulus and the acoustic velocity of columnar jointed basalts, and the formula expressed by deformation modulus and acoustic velocity was then established, which would be a useful guidance for the site operation. Based on the monitoring and testing data of CJB, several numerical simulation models with different joint angles and weak thickness were built to further discuss the mechanical behaviors of CJB. The numerical simulation results show that the joint angle of 30° ∼ 60° presents weak antipressure abilities, for the shearing slipping force and interformational sliding are remarkable in them. Besides, the small material property difference is helpful for the compressive strength of rock masses. After adopting the most unfavorable joint angle and width to model the tunneling process in CJB, it suggests that it is easily damaged along the directions of rock joints in CJB when constructing in tunnels. |
| format | Article |
| id | doaj-art-03c9a65500084ba48a2ab16eae4821a5 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-03c9a65500084ba48a2ab16eae4821a52025-02-03T06:46:57ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/66597186659718Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed BasaltShiyi Zhu0Changdi He1Fei Peng2Anchi Shi3Dongyang Yuan4Weikang Zhang5Institute of Bridge and Tunnel Engineering, Zhejiang Scientific Research Institute of Transport, Hangzhou 310023, ChinaInstitute of Bridge and Tunnel Engineering, Zhejiang Scientific Research Institute of Transport, Hangzhou 310023, ChinaInstitute of Bridge and Tunnel Engineering, Zhejiang Scientific Research Institute of Transport, Hangzhou 310023, ChinaPowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaInstitute of Bridge and Tunnel Engineering, Zhejiang Scientific Research Institute of Transport, Hangzhou 310023, ChinaInstitute of Bridge and Tunnel Engineering, Zhejiang Scientific Research Institute of Transport, Hangzhou 310023, ChinaColumnar jointed basalts (CJB) are featured by the joint network of discontinuities, which is hard for geotechnical design and construction. Therefore, investigating the mechanical behaviors of CJB is significant for the long-term use of the engineering structures. In this paper, field research studies, such as the rigid bearing plate tests and acoustic tests, were employed, to obtain the deformation modulus and the acoustic velocity of columnar jointed basalts, and the formula expressed by deformation modulus and acoustic velocity was then established, which would be a useful guidance for the site operation. Based on the monitoring and testing data of CJB, several numerical simulation models with different joint angles and weak thickness were built to further discuss the mechanical behaviors of CJB. The numerical simulation results show that the joint angle of 30° ∼ 60° presents weak antipressure abilities, for the shearing slipping force and interformational sliding are remarkable in them. Besides, the small material property difference is helpful for the compressive strength of rock masses. After adopting the most unfavorable joint angle and width to model the tunneling process in CJB, it suggests that it is easily damaged along the directions of rock joints in CJB when constructing in tunnels.http://dx.doi.org/10.1155/2020/6659718 |
| spellingShingle | Shiyi Zhu Changdi He Fei Peng Anchi Shi Dongyang Yuan Weikang Zhang Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed Basalt Advances in Civil Engineering |
| title | Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed Basalt |
| title_full | Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed Basalt |
| title_fullStr | Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed Basalt |
| title_full_unstemmed | Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed Basalt |
| title_short | Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed Basalt |
| title_sort | experimental and numerical studies on the mechanical properties of columnar jointed basalt |
| url | http://dx.doi.org/10.1155/2020/6659718 |
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