Climate Change Data Portal
| DOI | 10.1007/s11629-020-6463-y |
| Creep characteristics and constitutive model for frozen mixed soils | |
| Song Bing-tang; Liu En-long; Shi Zhao-yun; Wang Pan; Yu Qi-hao | |
| 通讯作者 | Liu, EL (通讯作者)，Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China. ; Liu, EL (通讯作者)，Sichuan Univ, Coll Water Resources & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China. |
| 发表日期 | 2021 |
| ISSN | 1672-6316 |
| EISSN | 1993-0321 |
| 起始页码 | 1966 |
| 结束页码 | 1976 |
| 卷号 | 18期号:7 |
| 英文摘要 | The uniform settle caused by the permafrost creep is still the primary problem of engineering construction in cold region. To investigate the creep characteristics of frozen soils mixed with silty clay and coarse-grained sand, several triaxial creep tests of frozen mixed soils under different conditions (temperature, confining pressure, coarse-grained particle content) were performed, and the effects of the temperature, confining pressure and coarse particle content on the creep characteristics of frozen mixed soils were also analyzed. The results of the experiments indicated that when the confining pressure was low, the specimen exhibited an attenuation creep under a low-stress level (0.4-0.7) and a non-attenuation creep under a high-stress level (0.7-0.9). In contrast, when the confining pressure was high, the specimen had both initial and stable creep stages, but no the accelerated creep stage. The higher the content of coarse grains, the shorter the stable creep stage, and the easier to enter the accelerated creep stage for the specimen. Further, the long-term strength of frozen soils decreased with an increase in the content of coarse grains. Finally, a newly improved Nishihara model was proposed to consider both the hardening effect and damage effect by introducing both the hardening and damage variables, which can model the entire creep process of frozen soils modeled relatively easily. It was found that with the increasing content of coarse particle, both the strengthening and damaged effects in the creep process are reduced |
| 关键词 | STRENGTH CRITERIONYIELD CRITERIONSTRESSSTRAINCLAYTEMPERATURESANDSTONEBEHAVIORRAILWAYLOESS |
| 英文关键词 | Frozen mixed soil; Creep; Hardening and damage; Constitutive model |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:000672444400019 |
| 来源期刊 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/254298 |
| 作者单位 | [Song Bing-tang; Liu En-long; Wang Pan; Yu Qi-hao] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Song Bing-tang; Wang Pan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Liu En-long] Sichuan Univ, Coll Water Resources & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China; [Shi Zhao-yun] Yalong River Hydropower Dev Co Ltd, Chengdu 610051, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song Bing-tang,Liu En-long,Shi Zhao-yun,et al. Creep characteristics and constitutive model for frozen mixed soils[J]. 中国科学院西北生态环境资源研究院,2021,18(7). |
| APA | Song Bing-tang,Liu En-long,Shi Zhao-yun,Wang Pan,&Yu Qi-hao.(2021).Creep characteristics and constitutive model for frozen mixed soils.JOURNAL OF MOUNTAIN SCIENCE,18(7). |
| MLA | Song Bing-tang,et al."Creep characteristics and constitutive model for frozen mixed soils".JOURNAL OF MOUNTAIN SCIENCE 18.7(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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。
