Macro-meso fatigue failure of bimrocks with various block content subjected to multistage fatigue triaxial loads
文献类型：期刊论文
| 作者 | Wang, Yu1; Mao, Tianqiao2; Xia, Yingjie3; Li, Xiao2; Yi, Xuefeng1 |
| 刊名 | INTERNATIONAL JOURNAL OF FATIGUE
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 163页码:19 |
| ISSN号 | 0142-1123 |
| 关键词 | Bimrock Fatigue failure Block-matrix interface Rock block percentage |
| DOI | 10.1016/j.ijfatigue.2022.107014 |
| 英文摘要 | The non-linear mechanical behaviors of bimrock under static loading conditions have been widely studied currently. To data, however, the fatigue responses of bimrock with various rock block percentage (RBP) under multi-level cyclic loads were not well understood. The cyclic triaxial tests combined with post-test computed tomography scanning were employed to investigate the damage-cracking and volumetric dilatancy characteristics of a slope bimrock. The results reveal that multiple block-matric damage and volumetric dilatancy were strongly impacted by the block content. Bimrock strength and stiffness increase but volumetric deformation decreases with increasing block content. The occurrence of critical instability for bimrock with RBP is earlier than those with high RBP by the proposed volumetric strain rate. In addition, damage is larger for bimrock with low RBP and damage growth rate decreases accordingly. A two-stage damage evolution model was proposed to describe the damage propagation and the mode fits the testing data well. Moreover, the mesoscopic interface damage-cracking and volumetric dilatancy were visualized from CT images, two indices of interface damage ratio (IDR) and failed volumetric rock proportion (FVBP) reveal that the matrix expansion and interface cracking play a dominant role in volumetric dilatancy for bimrock with low block content. However, the block interlocking and occlusion contribute a lot to volumetric expansion of bimrock with high RBP, and their instability was limited at the confined condition. Through a series of macro-meso fatigue failure analysis, the effect of block proportion on bimrock under triaxial fatigue failure have been presented first. This study is in favor of predication the long-term stability of the bimrock slope under complex disturbed stress. |
| WOS关键词 | SOIL-ROCK MIXTURE ; MECHANICAL CHARACTERIZATION ; SHEAR-STRENGTH ; AGGREGATE ; CRACKING ; TESTS ; CT |
| 资助项目 | Beijing Natural Science Foundation[8202033] ; National Natural Science Foundation of China[52174069] ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power[ZDZX2020001] ; National Key Technologies Research & Development Program[2018YFC0808402] ; Fundamental Research Funds for the Central Universities[FRF-TP-20-004A2] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000903657100004 |
| 资助机构 | Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power ; Key Laboratory of Geological Environment Intelligent Monitoring and Disaster Prevention and Control of Henan Province, North China University of Water Resources and Electric Power ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106945]  |
| 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 | Xia, Yingjie |
| 作者单位 | 1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Dept Civil Engn, Beijing Key Lab Urban Underground Space Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, 19 Beitucheng West Rd, Beijing 100029, Peoples R China 3.Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yu,Mao, Tianqiao,Xia, Yingjie,et al. Macro-meso fatigue failure of bimrocks with various block content subjected to multistage fatigue triaxial loads[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,163:19. |
| APA | Wang, Yu,Mao, Tianqiao,Xia, Yingjie,Li, Xiao,&Yi, Xuefeng.(2022).Macro-meso fatigue failure of bimrocks with various block content subjected to multistage fatigue triaxial loads.INTERNATIONAL JOURNAL OF FATIGUE,163,19. |
| MLA | Wang, Yu,et al."Macro-meso fatigue failure of bimrocks with various block content subjected to multistage fatigue triaxial loads".INTERNATIONAL JOURNAL OF FATIGUE 163(2022):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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