Experimental investigation of the creep behaviour of remoulded loess under different levels of compactness
文献类型：期刊论文
| 作者 | Tang, Hao1,2; Luo, Jinzhi2; Duan, Zhao2; Wang, Dongpo3; Qi, Shengwen4 |
| 刊名 | PLOS ONE
 |
| 出版日期 | 2022-01-24 |
| 卷号 | 17期号:1页码:19 |
| ISSN号 | 1932-6203 |
| DOI | 10.1371/journal.pone.0262456 |
| 英文摘要 | Generally, a loess high fill project will undergo a time-dependent deformation and settlement process for a long time after the initial fill. Understanding the creeping behaviour of compacted loess is an important part of determining the stability of a compacted loess foundation. To study the creep behaviour of remoulded loess under different levels of compactness, we performed triaxial shear and triaxial creep tests using Q(2) loess specimens obtained from the new district of Yan'an city. Based on laboratory test results, the triaxial shear and creep characteristics of remoulded loess under different levels compactness are summarised. The regularity of instantaneous strain, creep strain, total accumulated strain and initial shear modulus were analysed and the relationship between the compactness and long-term strength of remoulded loess is provided. It was found that the remoulded loess becomes harder and its long-term strength increases with an increase in compactness. Furthermore, we propose a new creep model (HD), based on the hardening-damage mechanism, and have derived one-dimensional (1D) and three-dimensional (3D) creep equations based on this new creep model. This new creep model is flexible enough to fit the typical creep test curves of remoulded loess, while perfectly describing the tertiary creep stage. Finally, the sensitivity of the HD creep model parameters was analysed; the results indicate that the parameters denoted as alpha, gamma, and beta significantly affect the morphological changes and various stage characteristics are represented by the creep curve. |
| WOS关键词 | FRACTIONAL CALCULUS ; CONSTITUTIVE MODEL ; MECHANISMS ; EVOLUTION ; CHINA ; SOILS |
| 资助项目 | National Natural Science Foundation of China[41790442] ; National Natural Science Foundation of China[41602305] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000773223800032 |
| 出版者 | PUBLIC LIBRARY SCIENCE |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105069]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Luo, Jinzhi |
| 作者单位 | 1.Xian Univ Sci & Technol, Geol Res Inst Coal Green Min, Xian, Peoples R China 2.Xian Univ Sci & Technol, Coll Geol & Environm, Xian, Peoples R China 3.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Hao,Luo, Jinzhi,Duan, Zhao,et al. Experimental investigation of the creep behaviour of remoulded loess under different levels of compactness[J]. PLOS ONE,2022,17(1):19. |
| APA | Tang, Hao,Luo, Jinzhi,Duan, Zhao,Wang, Dongpo,&Qi, Shengwen.(2022).Experimental investigation of the creep behaviour of remoulded loess under different levels of compactness.PLOS ONE,17(1),19. |
| MLA | Tang, Hao,et al."Experimental investigation of the creep behaviour of remoulded loess under different levels of compactness".PLOS ONE 17.1(2022):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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