An Improved Nishihara Model for Frozen Loess considering the Influence of Temperature
文献类型：期刊论文
| 作者 | Li, Xin1; Liu, Enlong1,2; Song, Bingtang2; Liu, Xingyan2 |
| 刊名 | ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
 |
| 出版日期 | 2018 |
| 页码 | 10 |
| ISSN号 | 1687-8434 |
| DOI | 10.1155/2018/9073435 |
| 通讯作者 | Liu, Enlong(liuenlong@lzb.ac.cn) |
| 英文摘要 | A series of triaxial creep tests under the constant confining pressure are performed on frozen loess specimens, and the creep behavior of the frozen loess with respect to variations in both temperature and deviator stress is examined. Experimental results illustrate that the frozen loess specimens present the attenuation creep at the lower deviatoric stress, whereas the nonattenuation creep under the higher deviatoric stress level, and with a drop in the temperature, the deviator stress value which the exhibition of nonattenuation creep needs will increase under the constant confining pressure condition. According to the microscopic analysis on deformation characteristics in the creep process of frozen soil, both temperature and external stress will cause the hardening and weakening effects, affecting the creep properties of frozen loess. By introducing the hardening variable and damage variable to consider the hardening and weakening effects of the frozen loess, an improved Nishihara model is proposed. The correlations between model parameters and the temperature as well as deviator stress are determined. The comparisons between model predictions and experimental results show that the improved creep constitutive model proposed here can not only describe the whole creep process well, but also reveal the influences of the temperature and deviator stress on the creep behavior of frozen loess, which demonstrate its accuracy and usefulness. |
| 收录类别 | SCI |
| WOS关键词 | CREEP-BEHAVIOR ; SOILS ; PERMAFROST ; EMBANKMENT |
| WOS研究方向 | Materials Science |
| WOS类目 | Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000449824900001 |
| 出版者 | HINDAWI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558264 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Liu, Enlong |
| 作者单位 | 1.Sichuan Univ, Coll Water Resources & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xin,Liu, Enlong,Song, Bingtang,et al. An Improved Nishihara Model for Frozen Loess considering the Influence of Temperature[J]. ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2018:10. |
| APA | Li, Xin,Liu, Enlong,Song, Bingtang,&Liu, Xingyan.(2018).An Improved Nishihara Model for Frozen Loess considering the Influence of Temperature.ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,10. |
| MLA | Li, Xin,et al."An Improved Nishihara Model for Frozen Loess considering the Influence of Temperature".ADVANCES IN MATERIALS SCIENCE AND ENGINEERING (2018):10. |
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来源：寒区旱区环境与工程研究所
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