Characteristics of roadbed settlement in embankment-bridge transition section along the Qinghai-Tibet Railway in permafrost regions
文献类型：期刊论文
| 作者 | Niu Fujun1,2; Lin Zhanju1,2,3; Lu Jiahao1,2,3; Liu Hua1,2,3; Xu Zhi-ying1,2,3 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2011-03-01 |
| 卷号 | 65期号:3页码:437-445 |
| 关键词 | Qinghai-Tibet Railway Roadbed-bridge transition section Settlement Permafrost Correlation analysis |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2010.10.014 |
| 通讯作者 | Niu Fujun(niufujun@lzb.ac.cn) |
| 英文摘要 | The Qinghai-Tibet Railway (QTR) project was finished on July 1, 2006, and has served for over 3 years. Judging from the present situation, the roadbed is stable and train speed in permafrost regions achieves 100 km/h as expected during the designing. However, as half part of the roadbed was constructed over the permafrost characterized by high ground temperature and high ice content, slight changes of the permafrost might lead to roadbed problems, of which the settlement in embankment-bridge transition section is an obvious and special one. Investigated results of 164 bridges and accounting to 656 positions from the Xidatan Basin to the Chiqu Valley along the QTR in 2009 showed that the settlement was influenced by factors including bridge orientation, embankment slope direction, embankment height, ground temperature, ground ice content of permafrost and local subgrade soil type. For the average value of the settlement, it was greater at the northern end of a bridge than that at the southern end, and was greater in sunny-slope than that in shady-slope. It was greater in high ice permafrost regions than that in low ice regions, and was greater in high-temperature permafrost regions than that in low-temperature regions. Additionally, it increased logarithmically with the height of the embankment. In regions where the subgrade soils were dominated by silt, silty clay or fine sand, the settlement amount was higher than that in bedrock regions. Correlation analysis results showed that there were good relationships between the settlement and the slope direction, embankment height, ground temperature and ice contents when some of the later items were quantified. The correlation coefficients were 0.234, 0.213, -0.21 and 0.151 respectively, when the factors were quantified. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | STABILITY |
| 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:000287787300017 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556575 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Niu Fujun |
| 作者单位 | 1.CAS, State Key Lab Frozen Soil Engn Cold & Arid Reg En, Lanzhou 730000, Gansu, Peoples R China 2.CAS, Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu Fujun,Lin Zhanju,Lu Jiahao,et al. Characteristics of roadbed settlement in embankment-bridge transition section along the Qinghai-Tibet Railway in permafrost regions[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2011,65(3):437-445. |
| APA | Niu Fujun,Lin Zhanju,Lu Jiahao,Liu Hua,&Xu Zhi-ying.(2011).Characteristics of roadbed settlement in embankment-bridge transition section along the Qinghai-Tibet Railway in permafrost regions.COLD REGIONS SCIENCE AND TECHNOLOGY,65(3),437-445. |
| MLA | Niu Fujun,et al."Characteristics of roadbed settlement in embankment-bridge transition section along the Qinghai-Tibet Railway in permafrost regions".COLD REGIONS SCIENCE AND TECHNOLOGY 65.3(2011):437-445. |
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来源：寒区旱区环境与工程研究所
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