Heat transfer process of roadway embankments with different type and width of road surface in permafrost regions
文献类型：期刊论文
| 作者 | Yu Qihao; Pan Xicai; Cheng Guodong; Bai Yang |
| 刊名 | PROGRESS IN NATURAL SCIENCE
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 17期号:3页码:314-319 |
| 关键词 | wide road surface roadway embankment permafrost regions process of heat transfer heat flux ground temperature field |
| ISSN号 | 1002-0071 |
| 通讯作者 | Yu Qihao(yuqh@lzb.ac.cn) |
| 英文摘要 | The stability of roadbed in permafrost areas has become a big concern with rapid development and construction of throughways, highways and railways in these areas under the current climate change since it is governed by the thermal condition, or in other words, the heat transfer process in the embankment. We carried out a finite element analysis to analyze the effects of different types of road surface and the effect of breadth of embankment on the embankment heat transfer process. The results indicated that the mean annual heat transfer rate at the bottom of the roadway embankment with asphalt surfaces is 3 times that with sandy gravel surfaces. This means annual heat transfer rate increased by 60% when the breadth of asphalt surface was doubled. The increased heat transfer rate was mainly located at the bottom of the embankment and resulted in the effect of thermal concentration,. leading to degradation of the permafrost by as much as 1.6 times. It was also found that increasing embankment height would not reduce these increases of the heat transfer rate. Therefore both asphalt road surface and increased embankment breadth can lead to an intensified heat transfer rate in roadway embankment, consequently degradating the underlying permafrost and embankment instability. |
| 收录类别 | SCI |
| WOS研究方向 | Materials Science ; Science & Technology - Other Topics |
| WOS类目 | Materials Science, Multidisciplinary ; Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000246193900011 |
| 出版者 | TAYLOR & FRANCIS LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555901 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yu Qihao |
| 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 | Yu Qihao,Pan Xicai,Cheng Guodong,et al. Heat transfer process of roadway embankments with different type and width of road surface in permafrost regions[J]. PROGRESS IN NATURAL SCIENCE,2007,17(3):314-319. |
| APA | Yu Qihao,Pan Xicai,Cheng Guodong,&Bai Yang.(2007).Heat transfer process of roadway embankments with different type and width of road surface in permafrost regions.PROGRESS IN NATURAL SCIENCE,17(3),314-319. |
| MLA | Yu Qihao,et al."Heat transfer process of roadway embankments with different type and width of road surface in permafrost regions".PROGRESS IN NATURAL SCIENCE 17.3(2007):314-319. |
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来源：寒区旱区环境与工程研究所
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