Mechanical behaviour of rock containing a persistent joint under uniaxial compression at different strain rates
文献类型：期刊论文
| 作者 | Zhao, Wusheng; Xie, Peiyao; Chen, Weizhong; Gao, Hou |
| 刊名 | EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
 |
| 出版日期 | 2023-05-09 |
| 关键词 | Strain rate rock joint fracture stiffness failure pattern |
| ISSN号 | 1964-8189 |
| 英文摘要 | Understanding the mechanical behaviour of jointed rock during seismic events is crucial for ensuring the stability of rock engineering. A series of uniaxial compression tests were conducted on granite specimens containing a persistent joint at strain rates (10(-5)-0.05/s). Acoustic emissions (AEs) were monitored to detect the rock fracturing, and the strain field on the specimen surface was measured by the digital image correlation technique. Three failure patterns of specimens were observed: rock splitting, joint slipping and mixed rock splitting-joint slipping. The shapes of typical strain-stress curves for the three patterns are different, but they are all characterised by multiple stress drops indicating significant rock fractures. When significant fractures occur, the frequency range of AEs expends and the dominant frequency of AEs becomes much larger. The specimen strength is affected by the strain rate, but this effect differs for different failure patterns of specimens. The joint inclination could influence the mode and profile of fractures near the joint, and the specimen strength and joint stiffness significantly decrease with increasing joint angle. This study could help better understand the behaviour of jointed rocks subjected to seismic loads. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000985876900001 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34872]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Zhao, Wusheng,Xie, Peiyao,Chen, Weizhong,et al. Mechanical behaviour of rock containing a persistent joint under uniaxial compression at different strain rates[J]. EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,2023. |
| APA | Zhao, Wusheng,Xie, Peiyao,Chen, Weizhong,&Gao, Hou.(2023).Mechanical behaviour of rock containing a persistent joint under uniaxial compression at different strain rates.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING. |
| MLA | Zhao, Wusheng,et al."Mechanical behaviour of rock containing a persistent joint under uniaxial compression at different strain rates".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING (2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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