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An Advanced Shear Strength Criterion for Rock Discontinuities Considering Size and Low Shear Rate

文献类型：期刊论文

作者Zheng, Bowen1,4,5; Qi, Shengwen1,4,5; Huang, Xiaolin1,4,5; Guo, Songfeng1,4,5; Wang, Chonglang3; Zhan, Zhifa2; Luo, Guangming1,4,5
刊名APPLIED SCIENCES-BASEL
出版日期2020-06-01
卷号10期号:12页码:19
关键词rock mass engineering geomechanics rock discontinuities shear loading strength assessment size and shear rate effects qualitative characterization
DOI10.3390/app10124095
英文摘要The shear strength of the rock discontinuities under different shear rates is of great importance to evaluate the stability of rock mass engineering, which is remarkably influenced by the size effects induced by both the length and the undulated amplitude of discontinuities. An advanced shear strength criterion taking into account the size and the shear rate simultaneously was proposed. There is an advantage of the dimension unity in terms of the new shear strength criterion in comparison to previous related empirical equations. Additionally, it can be degraded into the International Society for Rock Mechanics (ISRM)-suggested Barton shear strength empirical equation on the peak shear strength of the rock discontinuities. Then, based on a new dynamic direct shear testing device on rock joints, the granite discontinuities with various lengths (200 mm to 1000 mm) and undulated amplitudes (3 mm to 23 mm) were designed to conduct direct shear tests under different low shear rates (0 mm/s to 1 mm/s) to verify the involved empirical equations. It was found that the results predicted by the new shear strength criterion agreed well with the experimental results. It was proved that the new shear strength criterion had a better applicability to characterize the shear strength of the rock discontinuities.
WOS关键词JOINT ROUGHNESS COEFFICIENT ; MECHANICS ; FRICTION ; BEHAVIOR ; FAILURE ; DEGRADATION ; DEPENDENCY ; ANISOTROPY ; VELOCITY ; STRESS
资助项目National Natural Science Foundation of China[41825018] ; National Natural Science Foundation of China[41672307] ; National Natural Science Foundation of China[41902289] ; National Natural Science Foundation of China[41702345] ; National Natural Science Foundation of China[41807273] ; China Postdoctoral Science Foundation[2017M620903]
WOS研究方向Chemistry ; Engineering ; Materials Science ; Physics
语种英语
WOS记录号WOS:000549500200001
出版者MDPI
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/97199]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Zheng, Bowen; Qi, Shengwen
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.China Highway Engn Consulting Corp, Beijing 100089, Peoples R China
3.Univ Toronto, Dept Civil & Mineral Engn, Toronto, ON M5S 1A4, Canada
4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zheng, Bowen,Qi, Shengwen,Huang, Xiaolin,et al. An Advanced Shear Strength Criterion for Rock Discontinuities Considering Size and Low Shear Rate[J]. APPLIED SCIENCES-BASEL,2020,10(12):19.
APA Zheng, Bowen.,Qi, Shengwen.,Huang, Xiaolin.,Guo, Songfeng.,Wang, Chonglang.,...&Luo, Guangming.(2020).An Advanced Shear Strength Criterion for Rock Discontinuities Considering Size and Low Shear Rate.APPLIED SCIENCES-BASEL,10(12),19.
MLA Zheng, Bowen,et al."An Advanced Shear Strength Criterion for Rock Discontinuities Considering Size and Low Shear Rate".APPLIED SCIENCES-BASEL 10.12(2020):19.

入库方式： OAI收割

来源：地质与地球物理研究所

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