| 隧道长度对瞬变压力的影响 |
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| 引用本文： | 王建宇,万晓燕,吴剑.隧道长度对瞬变压力的影响[J].现代隧道技术,2008,45(6). |
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| 作者姓名： | 王建宇 万晓燕 吴剑 |
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| 作者单位： | 中铁西南科学研究院有限公司,成都,610031 |
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| 摘 要： | 与阻塞比和车速不同,隧道长度对瞬变压力的影响呈现出明显的非单调性。这是在高速铁路隧道设计中必须考虑的问题。根据现场实测资料,研究分析了压力波的传播、反射和叠加规律,提出了单线隧道相应于压力变化不同情况的"最不利隧道长度"的计算图表及公式。
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| 关 键 词： | 高速铁路 隧道长度 瞬变压力 叠加规律 |
Influence of Tunnel Lengths upon Air Pressure Fluctuation in High Speed Railway Tunnels |
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| Wang Jianyu,Wan Xiaoyan,Wu Jian.Influence of Tunnel Lengths upon Air Pressure Fluctuation in High Speed Railway Tunnels[J].Modern Tunnelling Technology,2008,45(6). |
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| Authors: | Wang Jianyu Wan Xiaoyan Wu Jian |
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| Abstract: | Besides blockage ratio and train speed,one of the important factors which influence air pressure fluctuation within tunnels is the tunnel length.In-situ measurements indicated that tunnel lengths vs.pressure fluctuation relationship is of obviously non-monotone character.By means of analysis on transmission,reflection and superposition of high-speed-train-caused air pressure waves,formulae for calculating the most unfavorable lengths for different instances in single track tunnels are presented as following |
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| Keywords: | High speed railway Tunnel length Transient air pressure Principle of superposition |
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