| 多年冻土区路堤边坡上遮阳板的稳定性分析 |
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| 引用本文： | 石磊,李宁,李国玉,毕贵权.多年冻土区路堤边坡上遮阳板的稳定性分析[J].冰川冻土,2007,29(6):986-991. |
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| 作者姓名： | 石磊 李宁 李国玉 毕贵权 |
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| 作者单位： | 1. 中国科学院, 寒区旱区环境与工程研究所, 冻土工程国家重点实验室, 甘肃, 兰州, 730000;2. 西安理工大学, 岩土工程研究所, 陕西, 西安, 710048 |
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| 基金项目： | 中国科学院知识创新工程重大项目(KZCX1-SW-04)资助 |
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| 摘 要： | 在青藏铁路和青藏公路的施工建设中,许多主动保护冻土的措施已经被采用,遮阳板就是其中有效的降温措施之一.由于青藏高原风速较平原地区大,且会对建筑物造成一定的破坏,所以文章以高原平均风速最大的地区-安多地区的风速条件为例对遮阳板的稳定性进行数值试验,从而得出合理的遮阳板的结构参数,为今后施工和维护提供了科学依据.
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| 关 键 词： | 遮阳板 青藏铁路 冻土保护 新型护坡 遮阳板 青藏铁路 冻土保护 新型护坡 |
| 文章编号： | 1000-0240（2007）06-0986-06 |
| 收稿时间： | 2007-06-06 |
| 修稿时间： | 2007-09-19 |
Stability Analysis of the Awning in Road Engineering in Permafrost Regions |
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| SHI Lei,LI Ning,LI Guo-yu,BI Gui-quan.Stability Analysis of the Awning in Road Engineering in Permafrost Regions[J].Journal of Glaciology and Geocryology,2007,29(6):986-991. |
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| Authors: | SHI Lei LI Ning LI Guo-yu BI Gui-quan |
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| Institution: | 1. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China;2. Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an Shaanxi 710048, China |
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| Abstract: | There are a lot of active measures to protect permafrost adopted in the construction of the Qinghai-Tibet Railway and the Qinghai-Tibet Highway,of which an effective one is awning.The maximum wind velocity in the Tibetan Plateau is stronger than that in the plain,and brings about certain destroying to the buildings,therefore,in this article,the wind velocity condition of Amdo County,where the average wind velocity is maximal,is taken as an example to analyze the stability of awning,utilizing numerical simulation.The research results show that the height of the awning has significant influence on the structural stability,whereas,it has less impact on the thermal regime,and that the rational value ranges from 0.4 m to 1.0 m in height of the awning,1.5 m to 2.0 m in the interval space between the supporting angle irons,1.5 m to 2.0 m in the buried depth of the supporting angle iron.These researches provide a scientific basis for design,construction and maintenance of an awning. |
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| Keywords: | awning Qinghai-Tibet Railway permafrost protection slope protection of new type |
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