Laboratory investigation on strength and deformation characteristics of ice-saturated frozen sandy soil
文献类型：期刊论文
| 作者 | Xu, Xiangtian1; Lai, Yuanming1; Dong, Yuanhong1,2; Qi, Jilin1 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 69期号:1页码:98-104 |
| 关键词 | Frozen sandy soil Strength criterion Stress-strain behavior Pressure melting Confining pressure |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2011.07.005 |
| 通讯作者 | Lai, Yuanming(ymlai@lzb.ac.cn) |
| 英文摘要 | To investigate the properties of ice-saturated frozen sandy soil, a series of triaxial compression tests on frozen sandy soil with a volumetric ice content of about 50% were carried out at a temperature of -2.0 degrees C. The effect of confining pressure on strength and deformation features is analyzed according to the experimental results. The results show that the strength changes with increasing confining pressure in three distinct phases. According to the effective stress principle, the mechanism of strength is explained. A strength criterion is proposed to describe the strength characteristic. The equivalent stress versus axial strain curve shows strain-softening under each confining pressure, and the extent of strain-softening decreases with the increase in confining pressure, until it behaves the so-called perfect elasto-plastic feature when the confining pressure is large enough. The improved Duncan-Chang hyperbolic model is taken to simulate the stress-strain behaviors. The simulation shows that the model can well describe the strain-softening. The dependency of the volumetric deformation on the confining pressure is also discussed. (C) 2011 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | DAMAGE CONSTITUTIVE MODEL ; CONSTANT STRAIN-RATE ; CRITERION ; BEHAVIOR ; STRESS ; SAMPLES ; CREEP ; SILT |
| 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:000296311100010 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556504 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Lai, Yuanming |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China 2.CCCC First Highway Consultants CO LTD, Xian 710075, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Xiangtian,Lai, Yuanming,Dong, Yuanhong,et al. Laboratory investigation on strength and deformation characteristics of ice-saturated frozen sandy soil[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2011,69(1):98-104. |
| APA | Xu, Xiangtian,Lai, Yuanming,Dong, Yuanhong,&Qi, Jilin.(2011).Laboratory investigation on strength and deformation characteristics of ice-saturated frozen sandy soil.COLD REGIONS SCIENCE AND TECHNOLOGY,69(1),98-104. |
| MLA | Xu, Xiangtian,et al."Laboratory investigation on strength and deformation characteristics of ice-saturated frozen sandy soil".COLD REGIONS SCIENCE AND TECHNOLOGY 69.1(2011):98-104. |
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来源：寒区旱区环境与工程研究所
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