Binary-medium-based constitutive model of frozen soils subjected to triaxial loading
文献类型：期刊论文
| 作者 | Zhang, De1,2; Liu, Enlong1,3 |
| 刊名 | RESULTS IN PHYSICS
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 12页码:1999-2008 |
| 关键词 | Frozen soils Elastoplastic behaviors Binary-medium constitutive model Breakage ratio Strain concentration coefficient |
| ISSN号 | 2211-3797 |
| DOI | 10.1016/j.rinp.2019.02.029 |
| 通讯作者 | Liu, Enlong(liuenlong@lzb.ac.cn) |
| 英文摘要 | To model the elastoplastic behaviors of frozen soils, a binary-medium-based constitutive model is developed and validated by a series of cryotriaxial compressive tests. In the framework of the proposed model, frozen soils are conceptualized to consist of structural blocks and weakened bands. Herein, the structural blocks are idealized as bonded elements with elastic-brittle deformational behaviors. Moreover, the weakened bands are conceptualized as frictional elements whose deformational characteristics are described by a nonlinear Duncan-Chang hyperbolic model. The bonded elements are found to gradually break up and transfer into frictional elements, which collectively contribute to the resistance capability against external loading. From the micro perspective and in the representative volume element (RVE) of the soil specimen, nonuniform strain distributions and particle slippage mechanisms are considered in the strain concentration coefficient and breakage ratio to formulate a constitutive model. Predictions are calibrated with available laboratory results, demonstrating that the proposed model can reasonably account for a breakage mechanism and can quantitatively simulate the nonlinear elastoplastic behavior of frozen soils. |
| 收录类别 | SCI |
| WOS关键词 | CRITERION ; EVOLUTION ; SAND |
| WOS研究方向 | Materials Science ; Physics |
| WOS类目 | Materials Science, Multidisciplinary ; Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000460704700290 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555547 |
| 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.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, De,Liu, Enlong. Binary-medium-based constitutive model of frozen soils subjected to triaxial loading[J]. RESULTS IN PHYSICS,2019,12:1999-2008. |
| APA | Zhang, De,&Liu, Enlong.(2019).Binary-medium-based constitutive model of frozen soils subjected to triaxial loading.RESULTS IN PHYSICS,12,1999-2008. |
| MLA | Zhang, De,et al."Binary-medium-based constitutive model of frozen soils subjected to triaxial loading".RESULTS IN PHYSICS 12(2019):1999-2008. |
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来源：寒区旱区环境与工程研究所
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