Effect of inherent anisotropy on the strength of natural granite residual soil under generalized stress paths
文献类型：期刊论文
| 作者 | Liu, Xinyu2,3; Zhang, Xianwei3; Kong, Lingwei3; An, Ran1; Xu, Guofang3 |
| 刊名 | ACTA GEOTECHNICA
 |
| 出版日期 | 2021-10-21 |
| 页码 | 20 |
| 关键词 | Anisotropy quantification Generalized stress paths Granite residual soil Hollow cylinder torsional shear Inherent anisotropy Simple shear Strength |
| ISSN号 | 1861-1125 |
| DOI | 10.1007/s11440-021-01393-5 |
| 英文摘要 | It is universally known that residual soils behave very differently from sedimentary soils. While the latter is widely known as cross-anisotropic, little is known regarding the strength anisotropy of residual soils. This study presents how the inherent anisotropy affects the strength of natural granite residual soils under generalized conditions, where intact specimens were carefully prepared and sheared under triaxial compression, extension, simple shear, and hollow cylinder torsional shear tests. The strength of natural residual soil, in terms of ultimate stress ratio M and undrained shear strength S-u, is found to be significantly anisotropic in a different way from normally consolidated clays with the maximum strength obtained under triaxial compression and the minimum under simple shear or at intermediate principal stress direction. As a result, the existing method failed to measure the anisotropy degree of the studied soil. Two parameters were proposed accordingly to quantify the anisotropic strength under general conditions, taking the special strength anisotropy pattern and cohesive-frictional nature of GRS into account. The proposed parameters enable the direct comparison of strength anisotropy among soils. This study serves as a data set to better understand residual soils regarding their anisotropic behaviors under generalized conditions. Although specific to granite residual soils in China, this study is expected to be more widely applicable to other weathered geomaterials. |
| 资助项目 | 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] ; Science Fund for Distinguished Young Scholars of Hubei Province[2020CFA103] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000710318800004 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/28388]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Xianwei |
| 作者单位 | 1.Wuhan Univ Sci & Technol, Coll Urban Construct, Wuhan 430070, 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. Effect of inherent anisotropy on the strength of natural granite residual soil under generalized stress paths[J]. ACTA GEOTECHNICA,2021:20. |
| APA | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,An, Ran,&Xu, Guofang.(2021).Effect of inherent anisotropy on the strength of natural granite residual soil under generalized stress paths.ACTA GEOTECHNICA,20. |
| MLA | Liu, Xinyu,et al."Effect of inherent anisotropy on the strength of natural granite residual soil under generalized stress paths".ACTA GEOTECHNICA (2021):20. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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