Shear-induced anisotropy analysis of rock masses containing non-coplanar intermittent joints
文献类型：期刊论文
| 作者 | Zhu, Kaiyuan1,2; Sun, Guanhua1,2; Shi, Lu1,2 |
| 刊名 | ARCHIVE OF APPLIED MECHANICS
 |
| 出版日期 | 2024-02-19 |
| 页码 | 24 |
| 关键词 | Anisotropy Discrete element method Micromechanics Rock bridge Fabric tensor |
| ISSN号 | 0939-1533 |
| DOI | 10.1007/s00419-024-02550-4 |
| 英文摘要 | The macroscopic mechanical behavior of granular materials is closely related to the fabric anisotropy and contact force anisotropy. In order to investigate the microevolution of fabric and force anisotropy of rock masses containing non-coplanar intermittent joints under direct shear loading, this paper establishes a numerical model using the particle flow code (PFC) based on the distinct element method (DEM) and investigates the effects of non-coplanar intermittent joints on the evolutions in the fabric and force anisotropy and the distributions of contact forces of rock specimens by setting up specimens with different ligament angles of joints. Meanwhile, the shear strength, deformation characteristics and failure mode, energy dissipation were analyzed to deepen the understanding of the macroscopic mechanical behavior of the specimens from the microscopic mechanism. Three anisotropic tensors aijc\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${a}_{ij}<^>{c}$$\end{document}, aijn\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${a}_{ij}<^>{n}$$\end{document} and aijt\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${a}_{ij}<^>{t}$$\end{document} are defined to characterize the anisotropic behavior of the granular materials which can show the evolution law of fabric and mechanical anisotropy of the system under direct shear load. The findings indicate that the degree of fabric anisotropy increases with increasing ligament, and the length of the load side significantly influences the initial mechanical anisotropy of the specimen. Concurrently, a rise in the ligament angle impedes the progression of anisotropy within the specimen, leading to a substantial reduction in the macroscopic mechanical strength of the rock. |
| 资助项目 | the Natural Science Foundation of Hubei Province (Three Gorges Innovation Development Joint Fund)[11972043] ; National Natural Science Foundation of China[2022CFD031] ; Natural Science Foundation of Hubei Province (Three Gorges Innovation Development Joint Fund) |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001164456100001 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40636]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Shi, Lu |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Kaiyuan,Sun, Guanhua,Shi, Lu. Shear-induced anisotropy analysis of rock masses containing non-coplanar intermittent joints[J]. ARCHIVE OF APPLIED MECHANICS,2024:24. |
| APA | Zhu, Kaiyuan,Sun, Guanhua,&Shi, Lu.(2024).Shear-induced anisotropy analysis of rock masses containing non-coplanar intermittent joints.ARCHIVE OF APPLIED MECHANICS,24. |
| MLA | Zhu, Kaiyuan,et al."Shear-induced anisotropy analysis of rock masses containing non-coplanar intermittent joints".ARCHIVE OF APPLIED MECHANICS (2024):24. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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