| 基于活塞风理论的高速铁路隧道衬砌压力计算改进方法 |
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| 引用本文： | 马云东,范斌.基于活塞风理论的高速铁路隧道衬砌压力计算改进方法[J].大连铁道学院学报,2010(3):12-15. |
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| 作者姓名： | 马云东 范斌 |
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| 作者单位： | 大连交通大学土木与安全工程学院; |
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| 基金项目： | 辽宁省高校优秀人才基金资助项目(2009R07) |
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| 摘 要： | 依据一维非定常流理论,对以往的活塞风理论进行了改进与优化,首先对不同状态下隧道内的空气密度进行了修正,充分考虑了活塞风的非定常性,改进了以往理论中空气密度的选取方法,使其更符合实际工况.其次引入了压力波传递机制,将其应用于活塞风的状态方程中,更准确地反映出隧道内压力的传递规律.
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| 关 键 词： | 高速铁路 活塞风 隧道 压力传递 |
Improved Method of Pressure Calculation in High-Speed Railway Tunnel Based on Piston Wind Theory |
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| MA Yun-dong,FAN Bin.Improved Method of Pressure Calculation in High-Speed Railway Tunnel Based on Piston Wind Theory[J].Journal of Dalian Railway Institute,2010(3):12-15. |
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| Authors: | MA Yun-dong FAN Bin |
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| Institution: | MA Yun-dong,FAN Bin(School of Civil , Safety Engineering,Dalian Jiaotong University,Dalian 116028,China) |
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| Abstract: | Based on piston wind theory achieved in the high-speed railway tunnel,an improved method is proposed for one-dimensional unsteady flow.The changing of air density in the tunnel is fully taken into account with the unsteady nature of the piston wind,and the veriation of air density selection method.By the introduction of pressure wave transmission mechanism,the piston wind equation of wind state can reflect more accuratly the pressure passing laws inside the tunnel. |
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| Keywords: | high-speed railway piston wind tunnel pressure passing |
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