Multiaxial creep of frozen loess
文献类型：期刊论文
| 作者 | Zhou, Zhiwei; Ma, Wei; Zhang, Shujuan; Du, Haimin; Mu, Yanhu; Li, Guoyu |
| 刊名 | MECHANICS OF MATERIALS
 |
| 出版日期 | 2016-04-01 |
| 卷号 | 95页码:172-191 |
| 关键词 | Multiaxial creep Dilatancy behavior Rate-dependent Hyperplasticity |
| ISSN号 | 0167-6636 |
| DOI | 10.1016/j.mechmat.2015.11.020 |
| 通讯作者 | Ma, Wei(mawei@lzb.ac.cn) |
| 英文摘要 | A series of triaxial compression and creep tests were conducted on frozen loess under different confining pressure and temperature conditions in order to study the rate-dependent mechanical behaviors. Experimental results illustrate that uniaxial instantaneous strength and long-term strength both follow the same variation rule with change of temperature over the range studied. The frozen loess exhibits prominent dilatancy behavior under low confining pressures. When the stress level exceeds the long-term strength, the mean dilatancy coefficient has a tendency to constant value in stable creep stage. The parabola-shape strength loci of frozen loess in mean stress-effective stress space were determinated experimentally. This testing result is more in agreement with the Ma's yield criterion for frozen soils (Ma et al., 1993). In order to establish the rate-dependent constitutive model of frozen loess, the hyperplasticity theory with multiple internal variables is applied and further extended to rate dependent materials in this investigation. The predictive capability of this theoretical model, considering the effect of the pressure crushing and melting phenomena, is verified by the stress-strain- time behavior of the frozen loess in triaxial creep tests. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | INDEPENDENT DISSIPATIVE MATERIALS ; HIGH CONFINING PRESSURES ; THERMOMECHANICAL FRAMEWORK ; COMPRESSIVE STRENGTH ; MODEL ; DAMAGE ; DEFORMATION ; SOILS ; SAND ; CLAY |
| WOS研究方向 | Materials Science ; Mechanics |
| WOS类目 | Materials Science, Multidisciplinary ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000372558000014 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557387 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Ma, Wei |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Zhiwei,Ma, Wei,Zhang, Shujuan,et al. Multiaxial creep of frozen loess[J]. MECHANICS OF MATERIALS,2016,95:172-191. |
| APA | Zhou, Zhiwei,Ma, Wei,Zhang, Shujuan,Du, Haimin,Mu, Yanhu,&Li, Guoyu.(2016).Multiaxial creep of frozen loess.MECHANICS OF MATERIALS,95,172-191. |
| MLA | Zhou, Zhiwei,et al."Multiaxial creep of frozen loess".MECHANICS OF MATERIALS 95(2016):172-191. |
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来源：寒区旱区环境与工程研究所
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