高速列车通过隧道时的压力波动问题

发布时间：2018-05-09 09:24

本文选题：高速列车 + 隧道　；参考：《机械工程学报》2014年24期

【摘要】：高速列车通过隧道时将会在隧道内引起相当复杂的气体压力波动,这是由于列车进入隧道时在隧道入口产生的压力波在隧道内来回传递并与列车经过时的气体压力扰动相互叠加的结果。从车体强度设计和列车运行安全性角度考虑,希望了解隧道内可能的最大气体正、负压力大小及其发生位置;气体压力波动与列车运行速度的关系。通过流体力学方程三维动态数值计算,仿真分析列车高速通过隧道的过程。计算结果证明了入口压力波效应与列车经过的扰动效应的叠加关系,得到列车通过时隧道内最大正压和最大负压发生的可能位置,以及最大正压值与最大负压值与车速间的关系式。可为高速铁路隧道和高速列车设计提供参考。
[Abstract]:When a high-speed train passes through a tunnel, it will cause quite complex gas pressure fluctuations in the tunnel. This is due to the fact that the pressure wave generated at the tunnel entrance when the train enters the tunnel is transmitted back and forth in the tunnel and superimposed with the gas pressure disturbance when the train passes by. From the point of view of the strength design of the car body and the safety of the train, we hope to know the possible maximum gas positive, negative pressure and its occurrence position in the tunnel, and the relationship between the gas pressure fluctuation and the train running speed. The three-dimensional dynamic numerical calculation of fluid dynamics equation is used to simulate and analyze the high-speed train passing through the tunnel. The calculation results prove the superposition between the inlet pressure wave effect and the disturbance effect of train passing, and obtain the possible position of the maximum positive pressure and the maximum negative pressure in the tunnel when the train passes. And the relationship between the maximum positive pressure and the maximum negative pressure and the speed. It can provide reference for the design of high speed railway tunnel and high speed train.
【作者单位】：西南交通大学机械工程学院;
【基金】：国家科技支撑计划(2009BAG12A04-A10) 高等学校博士学科点基金(20100184110002)资助项目
【分类号】：U270.11;U451.3

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