Stress relaxation characteristics of warm frozen clay under triaxial conditions
文献类型：期刊论文
| 作者 | Wang, Songhe; Qi, Jilin; Yao, Xiaoliang |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 69期号:1页码:112-117 |
| 关键词 | Stress relaxation Warm frozen clay Triaxial test Critical relaxation duration Relaxation rate |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2011.06.015 |
| 通讯作者 | Qi, Jilin(qijilin@lzb.ac.cn) |
| 英文摘要 | Stress relaxation is one of the main concerns in geotechnical engineering, especially in permafrost regions with warm frozen soil. This paper investigated the mechanical behaviors of a warm frozen soil during relaxation process. A series of triaxial relaxation tests were carried out on the warm frozen soil samples under the temperature from -1.0 degrees C to -0.2 degrees C and confining pressure of 0.5 MPa to 3.0 MPa. Three stages were observed during the whole stress relaxation process, i.e. instantaneous relaxation, intense relaxation and slow relaxation. Relationship between deviatoric stress and time was described by a hyperbolic relationship. With relatively small pre-strain (3% and 4%), volumetric changes during stress relaxation contracted initially followed by expansion, but contraction dominates the relaxation process with the magnitude of pre-strain over 6%. Characteristic parameters such as the instantaneous stress relaxation, the critical relaxation duration and relaxation rate are defined and analyzed. It is found that the parameters are all dependent on soil temperature, confining pressure and magnitude of pre-strain. (C) 2011 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000296311100012 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556518 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Qi, Jilin |
| 作者单位 | Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Songhe,Qi, Jilin,Yao, Xiaoliang. Stress relaxation characteristics of warm frozen clay under triaxial conditions[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2011,69(1):112-117. |
| APA | Wang, Songhe,Qi, Jilin,&Yao, Xiaoliang.(2011).Stress relaxation characteristics of warm frozen clay under triaxial conditions.COLD REGIONS SCIENCE AND TECHNOLOGY,69(1),112-117. |
| MLA | Wang, Songhe,et al."Stress relaxation characteristics of warm frozen clay under triaxial conditions".COLD REGIONS SCIENCE AND TECHNOLOGY 69.1(2011):112-117. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
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。