Three-Dimensional Nonlinear Analysis for the Cooling Characteristics of Crushed-Rock Interlayer Embankment with Ventilated Duct along the Qinghai-Tibet Expressway in Permafrost Regions
文献类型：期刊论文
| 作者 | Zhang, Mingyi; Lai, Yuanming; Dong, Yuanhong |
| 刊名 | JOURNAL OF COLD REGIONS ENGINEERING
 |
| 出版日期 | 2010-12-01 |
| 卷号 | 24期号:4页码:126-141 |
| 关键词 | Cooling characteristic Ventilated duct Qinghai-Tibet Expressway Crushed-rock interlayer embankment Permafrost |
| ISSN号 | 0887-381X |
| DOI | 10.1061/(ASCE)CR.1943-5495.0000018 |
| 通讯作者 | Zhang, Mingyi(myzhang@lzb.ac.cn) |
| 英文摘要 | The crushed-rock embankment and duct-ventilated embankment have been used as effective cooling measures to protect permafrost underlying the Qinghai-Tibet Railway from thawing in China. These two cooling techniques are not directly applied to the Qinghai-Tibet Expressway, however, due to the large width and higher temperature of pavement surface. Therefore, considering the heat transfer characteristics of crushed-rock interlayer embankments and duct-ventilated embankments, we designed the crushed-rock interlayer embankment with ventilated duct. For cold regions engineering projects, the thermal regime is the most important factor that determines the stability of construction. To investigate the thermal stability of this new type of embankment, a three-dimensional numerical model was developed based on heat and mass transfer theory. The model includes coupled heat transfer between the airflow and the duct wall, air convective heat transfer within the crushed-rock interlayer, and heat conduction with phase change in the soil layer. The computational results indicated that the numerical model can reasonably solve the coupled heat and mass transfer for the crushed-rock interlayer embankment with ventilated duct. Based on an assumption that the mean annual air temperature will increase by 2.6 degrees C in the next 50 years, it was determined that in areas where the mean annual air temperature is currently -4.0 degrees C, the crushed-rock interlayer embankment with ventilated duct can be an effective measure to decrease the underlying ground temperature and ensure the stability of the Qinghai-Tibet Expressway in permafrost regions. |
| 收录类别 | SCI |
| WOS关键词 | RAILWAY EMBANKMENT ; PLATEAU |
| 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:000284273900003 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556377 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang, Mingyi |
| 作者单位 | 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 | Zhang, Mingyi,Lai, Yuanming,Dong, Yuanhong. Three-Dimensional Nonlinear Analysis for the Cooling Characteristics of Crushed-Rock Interlayer Embankment with Ventilated Duct along the Qinghai-Tibet Expressway in Permafrost Regions[J]. JOURNAL OF COLD REGIONS ENGINEERING,2010,24(4):126-141. |
| APA | Zhang, Mingyi,Lai, Yuanming,&Dong, Yuanhong.(2010).Three-Dimensional Nonlinear Analysis for the Cooling Characteristics of Crushed-Rock Interlayer Embankment with Ventilated Duct along the Qinghai-Tibet Expressway in Permafrost Regions.JOURNAL OF COLD REGIONS ENGINEERING,24(4),126-141. |
| MLA | Zhang, Mingyi,et al."Three-Dimensional Nonlinear Analysis for the Cooling Characteristics of Crushed-Rock Interlayer Embankment with Ventilated Duct along the Qinghai-Tibet Expressway in Permafrost Regions".JOURNAL OF COLD REGIONS ENGINEERING 24.4(2010):126-141. |
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来源：寒区旱区环境与工程研究所
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