Shear Strength Anisotropy of Natural Granite Residual Soil
文献类型：期刊论文
| 作者 | Liu, Xinyu2,3; Zhang, Xianwei3; Kong, Lingwei3; Yin, Song1; Xu, Yiqing2,3 |
| 刊名 | JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
 |
| 出版日期 | 2022 |
| 卷号 | 148期号:1页码:13 |
| 关键词 | Granite residual soil Strength anisotropy Hollow cylinder torsional shear Sample preparation Effective friction angle Quantitative evaluation |
| ISSN号 | 1090-0241 |
| DOI | 10.1061/(ASCE)GT.1943-5606.0002709 |
| 英文摘要 | A significant feature of residual soil is the presence of a cemented structure and fissures that dominate its anisotropic behavior. Although the anisotropy of some sedimentary soils is well understood, that of residual soils is not. The present study investigates the strength anisotropy of granite residual soil via undrained hollow cylinder torsional shear tests for which intact and remolded hollow cylinder specimens were sheared in various principal stress directions alpha. The results reveal significant shear-strength anisotropy of the natural soil, whereas the remolded soil behaved almost isotropically. Expressed using the effective stress ratio at ultimate state t/s', the shear-strength variation reached 51% for alpha=0-90 degrees, within which range the highest values of t/s' was that for alpha=0 degrees. The torsional shear mode (alpha=45 degrees) resulted in the lowest soil strength. The anisotropic behavior of the studied soil differs much from that of some normally consolidated sedimentary soils such that new parameters are proposed for evaluating the degree of anisotropy. The proposed parameters confirmed the marked strength anisotropy of intact granite residual soil and found the anisotropy degree of soil significantly reduced after being remolded. This study provides the most direct evidence to date for the strength anisotropy of natural granite residual soil and enhances the understanding of this soil and weathered geomaterials in general. (C) 2021 American Society of Civil Engineers. |
| 资助项目 | National Natural Science Foundation of China[41972285] ; National Natural Science Foundation of China[41672293] ; National Natural Science Foundation of China[51709290] ; Youth Innovation Promotion Association CAS[2018363] ; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection[SKLGP2020K024] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z0190202] ; CRSRI Open Research Program[CKWV2021884/KY] ; Science Fund for Distinguished Young Scholars of Hubei Province[2020CFA103] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000719533900019 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/28250]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Xianwei |
| 作者单位 | 1.Zhongyuan Univ Technol, Sch Architectural Engn, Zhengzhou 450007, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,et al. Shear Strength Anisotropy of Natural Granite Residual Soil[J]. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,2022,148(1):13. |
| APA | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,Yin, Song,&Xu, Yiqing.(2022).Shear Strength Anisotropy of Natural Granite Residual Soil.JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,148(1),13. |
| MLA | Liu, Xinyu,et al."Shear Strength Anisotropy of Natural Granite Residual Soil".JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING 148.1(2022):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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