双层集装箱车通过隧道气动性能实车试验研究

来源期刊:中南大学学报(自然科学版)2010年第3期

论文作者:郭玉华 陈治亚 周丹

文章页码:1207 - 1211

关键词:双层集装箱车;隧道;压力波;空气动力学;实车试验

Key words:double container car; tunnel; pressure wave; aerodynamics; full-scale train test

摘    要:在合武(合肥—武汉)铁路上进行250 km/h等级隧道空气动力性能实车试验;对货物列车单列过隧道及货物列车与CRH2高速动车组在隧道内交会时,集装箱箱体表面的压力变化历程及所受的气动力进行测试。测试结果表明:当2列车在隧道内交会时,交会压力波与隧道内的压力波叠加,造成隧道内列车交会产生的压力变化幅值远大于明线交会产生的压力变化幅值;车体交会侧压力变化幅值比非交会侧压力变化幅值大16%,使得车辆受到较大侧向力作用;双层集装箱车辆进入隧道口时,空气压差阻力急剧上升,之后又逐渐回落;在隧道内运行的平均阻力约为明线运行时阻力的1.56倍,货物列车120 km/h和动车组250 km/h在大别山隧道和鹰嘴石隧道内交会时,双层集装箱车由气动力引起的最大2 s平均倾覆系数分别为0.063和0.067。

Abstract: The full-scale test about 250 km/h high-speed trains entering the tunnel was carried out on Hewu (Hefei-Wuhan) railway line. Air pressure change of double-deck train and aerodynamic force were measured when goods train and CRH2 covered and passed in tunnel. The results show that the pressure variation amplitude on the side body of train caused by trains passing in tunnel is more than that of passing trains in open air because pressure wave interacts each other in a complex way when trains travel in a tunnel and trains travel in open air. And pressure variation amplitude on the side body near the other train is 16% larger than that on the opposite side, which causes side force acted on the car. When the double container car travels in a tunnel, the pressure drag of the car rises quickly, then decreases gradually, and the amplitude of mean drag caused by train passing through the tunnel is almost 56% larger than that of the car running in open track. The coefficients of overturn moment per 2 s are 0.063 and 0.067 respectively when goods train and CRH2 converge and pass together in Dabiesan tunnel and Yingzuishi tunnel while the speed of goods train is 120 km/h and CRH2 is 250 km/h.

基金信息:铁道部科技研究开发计划项目

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