The numerical study on the ventilated embankment in permafrost regions in Qinghai-Tibet railway
文献类型：期刊论文
| 作者 | Su, B; Li, N; Quan, XJ |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 38期号:2-3页码:229-238 |
| 关键词 | ventilated embankment temperature field numerical experiment frost heaving artificial regulation |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2003.11.003 |
| 通讯作者 | Su, B(subo525@hotmail.com) |
| 英文摘要 | Ventilated duct system is widely used to prevent the degradation of the permafrost. For the ventilated embankment in high-temperature frozen soil region in the Qinghai-Tibet railway project, numerical analysis of temperature field under different layouts of ventilated duct system, such as the duct span, duct diameter, buried depth of the ducts and the height of embankment are systematically considered and optimized design of the ventilated duct system is proposed. The main results are as follows. (1) With an artificial regulation of the boundary condition of the ducts, the mean annual ground temperature of the permafrost drops to about 1.0-2.0 degreesC. (2) With the same ratio of the span to the diameter of the ducts, the layout with the smaller diameter ducts can get a relative better cooling effect. (3) Considering the ducts traversing the embankment, the stability of the ducts and the roadbed is also analyzed under the load cases of initial stress, the dead load of the soil, the trains' load and the frost heaving. (4) The differential deformation made by frost heaving under the proposed layout of the ducts and embankment cause larger tensile stress on the ducts than ordinary loads, especially on those ducts with larger diameter, which should be paid more attentions by the engineers. (C) 2004 Published by Elsevier B.V. |
| 收录类别 | SCI |
| 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:000220338800012 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555635 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Su, B |
| 作者单位 | Chinese Acad Sci, CAREERI, State Key Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, B,Li, N,Quan, XJ. The numerical study on the ventilated embankment in permafrost regions in Qinghai-Tibet railway[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2004,38(2-3):229-238. |
| APA | Su, B,Li, N,&Quan, XJ.(2004).The numerical study on the ventilated embankment in permafrost regions in Qinghai-Tibet railway.COLD REGIONS SCIENCE AND TECHNOLOGY,38(2-3),229-238. |
| MLA | Su, B,et al."The numerical study on the ventilated embankment in permafrost regions in Qinghai-Tibet railway".COLD REGIONS SCIENCE AND TECHNOLOGY 38.2-3(2004):229-238. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。