高速列车车体高度对列车通过隧道气动效应影响研究  

Research on Influence of High-Speed Train Body Heighton Aerodynamic Effect of Train Tunnel Passing

作　　者：张学军 吴柯江 王孔明 高磊 ZHANG Xuejun;WU Kejiang;WANG Kongming;GAO Lei(CRRC Qindao Sifang Co.,Ltd.,Qingdao 266031,China;China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China;CREEC Chongqing Survey Design and Research Co.,Ltd.,Chongqing 401121,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛266031 [2]中铁二院工程集团有限责任公司,四川成都610031 [3]中铁二院重庆勘察设计研究院有限责任公司,重庆401121

出　　处：《成都大学学报（自然科学版）》2023年第3期324-329,共6页Journal of Chengdu University（Natural Science Edition）

摘　　要：列车车体高度是影响车辆轻量化及气动效应的重要指标,随着列车速度的增加,列车高度对气动效应的影响变得更加明显,建立了车体高度分别3.95 m和4.05 m的三车编组高速列车气动效应分析模型,分析列车表面压力、隧道壁面压力波动、隧道出口微压波和气动阻力.计算结果表明,车体高度由4.05 m减小至3.95 m时,车体表面测点的最大负压幅值最大减小5.21%,车体表面测点压力的峰值最大减小5.82%;隧道壁面测点压力峰值减小1.99%~10.42%左右,减小量最大值也出现在P13处,其余测点最大负压减小量均在5%以下;出口不同处微气压波幅值减小约2.03~3.63%;列车隧道内最大气动阻力减小2.17%.Train body height is an important indicator that affects vehicle weight reduction and aerodynamic effects.With the increase of train speed,the impact of train height on aerodynamic effects becomes more apparent.In this study,aerodynamic effect analysis models for three car marshalling high-speed trains with body heights of 3.95 m and 4.05 m have been established to analyze train surface pressure,tunnel wall pressure fluctuations,tunnel outlet micro pressure waves,and aerodynamic resistance.The calculation results show that when the height of the vehicle body decreases from 4.05 m to_(3).95 m,the maximum negative pressure amplitude at the measuring points on the vehicle body surface decreases by 5.21%,and the maximum peak to peak pressure at the measuring points on the vehicle body surface decreases by 5.82%;the peak pressure at the tunnel wall measurement points decreased by from about 1.99%to 10.42%,and the maximum reduction also occurred at P13.The maximum negative pressure reduction at other measurement points was below 5%;the amplitude of the micro pressure wave at different locations at the outlet decreases by from about 2.03%to_(3).63%;the maximum aerodynamic resistance in the train tunnel was reduced by 2.17%.

关 键 词：高速列车 车体高度 隧道 气动效应 压力波 微气压波 

分 类 号：U451.3[建筑科学—桥梁与隧道工程]