Numerical Investigation of the Temperature Field of a New Convection-Intensifying Composite Embankment in Permafrost Regions
文献类型：期刊论文
| 作者 | Sun, Hong1; Ge, Xiurun1; Zhu, Dongpeng2; Niu, Fujun3; Chen, Jianbing2 |
| 刊名 | JOURNAL OF COLD REGIONS ENGINEERING
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 33期号:1页码:5 |
| 关键词 | Composite embankment Temperature field Permafrost Numerical simulation |
| ISSN号 | 0887-381X |
| DOI | 10.1061/(ASCE)CR.1943-5495.0000174 |
| 通讯作者 | Sun, Hong(sunhong@sjtu.edu.cn) |
| 英文摘要 | One of the main problems of wide expressway construction in permafrost regions involves protection of the thermal stability of roadbed. Although ventilating ducts and crushed-rock layers have been successfully used in railway embankment construction, their effects may fail to reach the requirements of large-width expressways. This paper proposes Convection-intensifying composite embankments composed of perforated ventilation ducts and crushed-rock layers and numerically studied their cooling effects. A numerical model for composite embankments in permafrost regions is established considering air flow and heat transfer characteristics in porous media. Temperature fields and cooling effects are simulated, and the results show that when the underlying permafrost temperature decreases, the position of the 0 degrees C isotherm increases significantly. The installed position of the ventilation duct and the thickness of crushed-rock layer have a significant influence on thermal status of the underlying permafrost. The new convection-intensifying composite embankment is a potential cooling measure for high-grade, large-width highway construction in permafrost regions. |
| 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:000457261500005 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558176 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Sun, Hong |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, Shanghai 200240, Peoples R China 2.CCCC First Highway Consultants Co Ltd, 63 Kejier Rd, Xian 710075, Shaanxi, Peoples R China 3.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Hong,Ge, Xiurun,Zhu, Dongpeng,et al. Numerical Investigation of the Temperature Field of a New Convection-Intensifying Composite Embankment in Permafrost Regions[J]. JOURNAL OF COLD REGIONS ENGINEERING,2019,33(1):5. |
| APA | Sun, Hong,Ge, Xiurun,Zhu, Dongpeng,Niu, Fujun,&Chen, Jianbing.(2019).Numerical Investigation of the Temperature Field of a New Convection-Intensifying Composite Embankment in Permafrost Regions.JOURNAL OF COLD REGIONS ENGINEERING,33(1),5. |
| MLA | Sun, Hong,et al."Numerical Investigation of the Temperature Field of a New Convection-Intensifying Composite Embankment in Permafrost Regions".JOURNAL OF COLD REGIONS ENGINEERING 33.1(2019):5. |
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来源：寒区旱区环境与工程研究所
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