Granular behaviour under bi-directional shear with constant vertical stress and constant volume
文献类型：期刊论文
| 作者 | Zhang, Min2; Yang, Yunming1; Zhang, Hanwen1; Li, Qi3,4
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| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 16期号:10页码:4300-4318 |
| 关键词 | Granular material Bi-directional shear Constant vertical stress Constant volume Principal stress rotation (PSR) Anisotropy |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2024.01.010 |
| 英文摘要 | This paper aims to investigate the role of bi-directional shear in the mechanical behaviour of granular materials and macro-micro relations by conducting experiments and discrete element method (DEM) modelling. The bi-directional shear consists of a static shear consolidation and subsequent shear under constant vertical stress and constant volume conditions. A side wall node loading method is used to exert bi-directional shear of various angles. The results show that bi-directional shear can significantly influence the mechanical behaviour of granular materials. However, the relationship between bidirectional shear and mechanical responses relies on loading conditions, i.e. constant vertical stress or constant volume conditions. The stress states induced by static shear consolidation are affected by loading angles, which are enlarged by subsequent shear, consistent with the relationship between bidirectional shear and principal stresses. It provides evidence for the dissipation of stresses accompanying static liquefaction of granular materials. The presence of bi-directional principal stress rotation (PSR) is demonstrated, which evidences why the bi-directional shear of loading angles with components in two directions results in faster dissipations of stresses with static liquefaction. Contant volume shearing leads to cross-anisotropic stress and fabric at micro-contacts, but constant vertical stress shearing leads to complete anisotropic stress and fabric at micro-contacts. It explains the differentiating relationship between stress-strain responses and fabric anisotropy under these two conditions. Micromechanical signatures such as the slip state of micro-contacts and coordination number are also examined, providing further insights into understanding granular behaviour under bi-directional shear. (c) 2024 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/). |
| 资助项目 | National Natural Science Foundation of China[42307243] ; Henan Province Science and Technology Research Project[232102321102] ; Shanxi Provincial Key Research and Develop-ment Project[202102090301009] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001336453900001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42855]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Yunming; Li, Qi |
| 作者单位 | 1.Univ Nottingham Ningbo China, Dept Civil Engn, Ningbo 315100, Peoples R China 2.Henan Univ, Sch Civil & Architectural Engn, Kaifeng 475004, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Min,Yang, Yunming,Zhang, Hanwen,et al. Granular behaviour under bi-directional shear with constant vertical stress and constant volume[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2024,16(10):4300-4318. |
| APA | Zhang, Min,Yang, Yunming,Zhang, Hanwen,&Li, Qi.(2024).Granular behaviour under bi-directional shear with constant vertical stress and constant volume.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,16(10),4300-4318. |
| MLA | Zhang, Min,et al."Granular behaviour under bi-directional shear with constant vertical stress and constant volume".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 16.10(2024):4300-4318. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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