城际快速列车隧道交会气动特性
张宝珍1,2周安德1,2孟令锋1,2易晓丹1,2唐明赞1,2南喆1,2熊小慧3
Aerodynamic Characteristics of Intercity High-Speed Trains Meeting in Tunnels
ZHANG Baozhen1,2ZHOU Ande1,2MENG Lingfeng1,2YI Xiaodan1,2TANG Mingzan1,2NAN Zhe1,2XIONG Xiaohui3
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作者信息:1.中车株洲电力机车有限公司, 412001， 株洲
2.重载快捷大功率电力机车全国重点实验室， 412001， 株洲
3.中南大学交通运输工程学院， 410075， 长沙
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Affiliation:1.CRRC Zhuzhou Locomotive Co., Ltd., 412001, Zhuzhou, China
2.The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, 412001, Zhuzhou, China
3.School of Traffic and Transportation Engineering, Central South University, 410075, Changsha, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.05.014
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中图分类号/CLCN:U451.3;U270.11
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栏目/Col:土建工程
摘要:
［目的］城际快速列车在隧道内交会时产生的气动载荷和瞬时压力变化，严重影响了列车行车安全和旅客乘坐气动舒适性。因此，有必要对城际快速列车隧道交会时的气动特性进行研究。［方法］基于空气动力学数值计算方法，研究了某城际快速列车隧道内交会时的气动载荷和车内压力波动情况，分析了列车表面压力变化、隧道壁面压力变化、各节车辆所受横向力变化，以及车厢内压力变化。［结果及结论］交会侧和非交会侧的列车表面压力幅值基本一致；隧道壁面压力幅值基本沿隧道中部呈对称分布；列车所受横向力和倾覆力矩近似与列车交会速度的平方成正比；车内瞬时压力波动满足1 s内不大于500 Pa和3 s内不大于800 Pa的旅客乘坐气动舒适性要求。
Abstracts:
［Objective］The aerodynamic loads and instantaneous pressure changes generated when intercity high-speed trains meet in tunnels seriously affect the train operation safety and the passengers′ aerodynamic comfort. Therefore, it is necessary to study the aerodynamic characteristics of intercity high-speed trains meeting in tunnels. ［Method］Based on the numerical calculation method of aerodynamics, the aerodynamic loads and the pressure fluctuations inside certain intercity high-speed trains meeting in tunnels are studied. The pressure changes on the train surface and on the tunnel wall, the changes in the lateral force cast on every train car, and the pressure changes inside the carriage are analyzed.［Result & Conclusion］The amplitudes of the train surface pressures on the meeting side and on the other side are basically the same. The amplitude of the tunnel wall pressure is basically symmetrically distributed along the middle of the tunnel. The lateral force and the overturning moment experienced by the train are approximately proportional to the square of the meeting speed of the trains. The instantaneous pressure fluctuations inside the train meet the passengers′ aerodynamic ride comfort requirements that the pressure change is no more than 500 Pa within 1 s and no more than 800 Pa within 3 s.
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