Experimental investigation of noncoaxial behavior of natural granite residual soil
文献类型：期刊论文
| 作者 | Liu, Xinyu2,3; Zhang, Xianwei2; Kong, Lingwei2; Zhang, Shixing1,4; Wang, Gang2,3 |
| 刊名 | ACTA GEOTECHNICA
 |
| 出版日期 | 2023-03-01 |
| 卷号 | 18期号:3页码:1289 |
| 关键词 | Cementation Granite residual soil Hollow-cylinder torsional shear test Inherent anisotropy Noncoaxial behavior Shear strength |
| ISSN号 | 1861-1125 |
| 英文摘要 | Noncoaxiality is critical for predicting accurately the constitutive relationships of soils. Although the noncoaxiality of sand and clay has been studied extensively, such information for residual soil is far from sufficient. The mechanical behavior of residual soil differs from that of sedimentary soil, thus the applicability of the existing results is yet to be confirmed. This paper reports systematic undrained hollow-cylinder torsional shear tests performed on specimens of natural granite residual soil (GRS). The tests involve shear paths of monotonic shear with fixed principal-stress direction (fixed-alpha) as well as rotation of the principal-stress direction at constant deviator stress (alpha-rotation). The results show that the noncoaxial behavior of GRS depends on the principal-stress direction as well as the deviator stress. In the fixed-alpha tests, the soil tends to become more coaxial when approaching an ultimate state. The higher deviator stress during the alpha-rotation tests results in reduced noncoaxiality, but no obvious reduction in noncoaxiality is induced by alpha-rotation. This paper correlates soil's inherent anisotropy with its noncoaxial behavior. For sand, the initial and maximum noncoaxiality degree correlate well with the initial anisotropy, and two corresponding empirical relationships are proposed. However, they do not apply to natural GRS and soft clay. The ultimate noncoaxiality degree correlates poorly with the inherent anisotropy because of the damage to the latter. For GRS, the inherent anisotropy declines when soil particles rearrange during shear, which damages the bridge-form iron-bearing minerals. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000843254800001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35414]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Norwegian Geotechnical Institute, N-0855 Oslo, Norway 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China 3.University of Chinese Academy of Sciences, Beijing, China 4.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China |
| 推荐引用方式 GB/T 7714 | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,et al. Experimental investigation of noncoaxial behavior of natural granite residual soil[J]. ACTA GEOTECHNICA,2023,18(3):1289. |
| APA | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,Zhang, Shixing,&Wang, Gang.(2023).Experimental investigation of noncoaxial behavior of natural granite residual soil.ACTA GEOTECHNICA,18(3),1289. |
| MLA | Liu, Xinyu,et al."Experimental investigation of noncoaxial behavior of natural granite residual soil".ACTA GEOTECHNICA 18.3(2023):1289. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。