A new criterion for strength of frozen sand under quick triaxial compression considering effect of confining pressure
文献类型：期刊论文
| 作者 | Qi, Jilin; Ma, Wei |
| 刊名 | ACTA GEOTECHNICA
 |
| 出版日期 | 2007-10-01 |
| 卷号 | 2期号:3页码:221-226 |
| 关键词 | Confining pressure Frozen sand Strength criterion Triaxial compression |
| ISSN号 | 1861-1125 |
| DOI | 10.1007/s11440-007-0034-z |
| 通讯作者 | Qi, Jilin(qijilin@lzb.ac.cn) |
| 英文摘要 | The strength of frozen soils has been one of the most extensively studied aspects in frozen soil mechanics. When carrying out deep excavations using freezing methods, high stress states are often encountered. Therefore, the strength of frozen soils under high confining pressures is of major concern. This paper first reviews the present failure criteria for frozen soils, especially with regard to the effect of confining pressure on the strength. It is suggested that the strength consists of two components, cohesion and friction, and can be expressed by the Mohr-Coulomb criterion and in the framework of the Drucker-Prager criterion. However, these two components are both dependent on the stress state. Duncan's equation for the friction angle is extended to frozen soils. A frozen Lanzhou fine sand is taken as study subject. The frozen sand is compressed at a high strain rate under three different temperatures and under a wide range of confining pressure. Experimental results have confirmed the generally recognized principle that the strength increases with the confining pressure up to certain value. Thereafter, it decreases with continued increase in confining pressure. Experimental data from our own tests and literature are fitted to the new criterion, which shows its validity. |
| 收录类别 | SCI |
| WOS研究方向 | Engineering |
| WOS类目 | Engineering, Geological |
| 语种 | 英语 |
| WOS记录号 | WOS:000208460400006 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555959 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Qi, Jilin |
| 作者单位 | Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Jilin,Ma, Wei. A new criterion for strength of frozen sand under quick triaxial compression considering effect of confining pressure[J]. ACTA GEOTECHNICA,2007,2(3):221-226. |
| APA | Qi, Jilin,&Ma, Wei.(2007).A new criterion for strength of frozen sand under quick triaxial compression considering effect of confining pressure.ACTA GEOTECHNICA,2(3),221-226. |
| MLA | Qi, Jilin,et al."A new criterion for strength of frozen sand under quick triaxial compression considering effect of confining pressure".ACTA GEOTECHNICA 2.3(2007):221-226. |
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来源：寒区旱区环境与工程研究所
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