On characteristics of K0 value and shear behaviour of loess using triaxial test
文献类型：期刊论文
| 作者 | Liu, Xin2; Xu, Xinyu2; Huang, Liang2; Wei, Xiao3; Lan, Hengxing1,2 |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2024-05-29 |
| 卷号 | 14期号:1页码:10 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-023-42248-1 |
| 英文摘要 | Compared with conventional soils, such as sand and clay, little knowledge on the coefficient of lateral earth pressure at-rest (K-0) has been established for loess in the current literature. This paper presents an experimental investigation on K-0 of compacted loess and the associated impacts on undrained shear behaviour. By adopting a K-0 consolidation module in the triaxial system, the K-0 stress state for loess samples was achieved through a unique feedback control. During the K-0 consolidation, the deviatoric stress (q) increases progressively with the premise that the volumetric strain (epsilon(v)) of the sample equals to the axial strain (epsilon(a)). The results show that the K-0 value of compacted loess is in a range of 0.28 to 0.53, which is dependent on the packing density and the clay content. A distinguishable decrease of K-0 was found in the course of K-0 consolidation for the loosely compacted loess sample, whereas a similar trend was not observed in the dense sample. In the undrained shear stage, all loess specimens revealed contractive response in the stress path (q-p') diagram, which can be quantified by a modified collapsibility index (I-c). The index is consistently higher for the K-0 consolidated loess samples than for the isotropic ones. The experimental results indicate a strong impact of the initial stress state on the shear behaviour of compacted loess. |
| WOS关键词 | STRESS |
| 资助项目 | the National Natural Science Foundation of China[42041006] ; the National Natural Science Foundation of China[41927806] ; the National Natural Science Foundation of China[41807226] ; National Natural Science Foundation of China[2022JQ-251] ; Natural Science Basic Research Plan in Shaanxi Province of China[300102260201] ; Fundamental Research Funds for the Central Universities through Chang'an University, China |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001235693100022 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | the National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Fundamental Research Funds for the Central Universities through Chang'an University, China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/206587]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Liu, Xin; Lan, Hengxing |
| 作者单位 | 1.Chinese Acad Sci, LREIS, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Peoples R China 3.Zhejiang Univ, Res Ctr Coastal & Urban Geotech Engn, Hangzhou 310058, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xin,Xu, Xinyu,Huang, Liang,et al. On characteristics of K0 value and shear behaviour of loess using triaxial test[J]. SCIENTIFIC REPORTS,2024,14(1):10. |
| APA | Liu, Xin,Xu, Xinyu,Huang, Liang,Wei, Xiao,&Lan, Hengxing.(2024).On characteristics of K0 value and shear behaviour of loess using triaxial test.SCIENTIFIC REPORTS,14(1),10. |
| MLA | Liu, Xin,et al."On characteristics of K0 value and shear behaviour of loess using triaxial test".SCIENTIFIC REPORTS 14.1(2024):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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