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  2. 地质与地球物理研究所
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  4. 中国科学院页岩气与地质工程重点实验室
Shear performance of quasi-NPR steel bolted rock joints at different shear rates

文献类型：期刊论文

作者Luo, Guangming2,3,5; Qi, Shengwen2,3,5; Zheng, Bowen2,3,5; Guo, Songfeng2,3,5; He, Manchao1,4
刊名INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
出版日期2023-10-01
卷号170页码:10
ISSN号1365-1609
关键词Negative Poisson 's ratio Bolted rock joints Direct shear test Rate effect Digital image correlation
DOI10.1016/j.ijrmms.2023.105542
英文摘要To study the shear performance of rock joints reinforced by NPR (negative Poisson's ratio) bolts, direct shear experiments with different shear rates were carried out on both quasi-NPR steel and conventional steel bolted rock joints, and DIC (digital image correlation) technique was applied to analyze the influence of bolting on the deformation of rock joints. The experiments show that (1) increasing shear rate weakens the deformation capacity of bolts before their failure and the transformation of loading from the bolt to the rock mass. A higher loading rate results in lower resistance strength of HRB bolts but has little effect for that of NPR bolts. (2) The shear performance of NPR bolts, including the bolt contribution, the deformation capacity and the transformation of load to the rock, is better than conventional bolts at both shear rates applied here, with obvious superiority at the higher shear rate. Through the analysis of reinforcement mechanisms, we suggest that the novel deformation characteristics of NPR bolts could explain their better shear performance. Finally, the deformation field obtained by the DIC technique shows a good correlation with the size of the compaction zone and could help quantitatively characterize the influence of bolting.
WOS关键词ENERGY-ABSORBING BOLT ; FULLY-GROUTED BOLTS ; MECHANICAL-BEHAVIOR ; STRENGTH ; SUPPORT ; STRESS ; DAMAGE
资助项目National Natural Science Founda-tion of China[41825018] ; National Natural Science Founda-tion of China[41941018] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904]
WOS研究方向Engineering ; Mining & Mineral Processing
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:001048609900001
资助机构National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)
源URL[http://ir.iggcas.ac.cn/handle/132A11/111378]  
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Qi, Shengwen; He, Manchao
作者单位1.China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Luo, Guangming,Qi, Shengwen,Zheng, Bowen,et al. Shear performance of quasi-NPR steel bolted rock joints at different shear rates[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2023,170:10.
APA Luo, Guangming,Qi, Shengwen,Zheng, Bowen,Guo, Songfeng,&He, Manchao.(2023).Shear performance of quasi-NPR steel bolted rock joints at different shear rates.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,170,10.
MLA Luo, Guangming,et al."Shear performance of quasi-NPR steel bolted rock joints at different shear rates".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 170(2023):10.

入库方式： OAI收割

来源：地质与地球物理研究所

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