| 铁路挡风墙挡风效果和积沙情况分析 |
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| 引用本文： | 郑晓静,马高生,黄宁.铁路挡风墙挡风效果和积沙情况分析[J].中国沙漠,2011,31(1):21-27. |
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| 作者姓名： | 郑晓静 马高生 黄宁 |
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| 作者单位： | 兰州大学西部灾害与环境力学教育部重点实验室,甘肃兰州,730000 |
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| 基金项目： | 国家重点基础研究发展计划项目(2009CB421304,2006DFA03640); 国家自然科学基金项目(10532040,10872082)资助 |
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| 摘 要： | 对我国"百里风区"铁路沿线的已有挡风墙在受强侧风作用时避免行进列车倾覆方面的有效性以及挡风墙沿线所存在的积沙问题进行了定量分析,在此基础上,给出了列车车速和挡风墙高度对导致运行列车的某一节车厢倾覆的临界倾覆风速影响的规律以及对沙粒沉积的影响.结果表明.列车运行速度和挡风墙高度对车厢的临界倾覆风速有明显影响,目前在"百里...
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| 关 键 词： | 挡风墙 列车运行 临界倾覆风速 沙粒沉积 |
Shelter Effect of Wind-break Wall and Its Impact on Sand Deposition |
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| ZHENG Xiao-jing,MA Gao-sheng,HUANG Ning.Shelter Effect of Wind-break Wall and Its Impact on Sand Deposition[J].Journal of Desert Research,2011,31(1):21-27. |
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| Authors: | ZHENG Xiao-jing MA Gao-sheng HUANG Ning |
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| Institution: | ZHENG Xiao-jing,MA Gao-sheng,HUANG Ning(Ministry of Education Key Laboratory of Mechanics on Disaster and Environment in Western China,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | Wind-break walls are erected to protect running trains from overturn in an famous gale region in China.The shelter effect of wind-break wall and its impact on sand deposition on railway roadbed was quantitatively analyzed.Further,how the height of wind-break wall and the train speed affect sand deposition and the threshold wind speed causing carriage overturn are studied.The train speed and the height of wind-break wall have an obvious effect on the threshold wind speed.The construction of wind-break wall a... |
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| Keywords: | wind-break wall train running threshold overturn wind speed sand deposition |
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