线间距对高速列车隧道内交会压力波影响的数值模拟研究

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (21) : 79-88.

论文

胡啸1，孔繁冰2，梁永廷2，于淼2，段修平1，梅元贵1

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Numerical simulation for influence of line spacing on crossing pressure wave of high-speed trains in tunnel

HU Xiao1, KONG Fanbing2, LIANG Yongting2, YU Miao2, DUAN Xiuping1, MEI Yuangui1

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摘要

基于三维、非定常、可压缩流动的雷诺平均N-S方程和SST k-ω湍流模型，采用重叠网格技术，研究在250 km/h、350 km/h、400 km/h等速交会下线间距（4.6 m、4.8 m以及5.0 m）对隧道内交会压力波的影响。鉴于交会压力波的危害，从车体压力最值、车体两侧压差、“头尾波”现象三方面来进行阐述。研究结果表明：车体两侧压差时间历程曲线形状和明线交会压力波时间历程曲线形状相似，在通过列车的车头和车尾经过监控点时，压差值分别产生先正后负和先负后正的脉冲波，车尾通过时产生的压差明显比车头经过时低；“头波”幅值大约为“尾波”幅值的两倍；车厢交会侧监控点的最大正压值、最大负压值、最大压力峰峰值、车体两侧压差幅值和“头尾波”幅值均与线间距成负指数关系。

Abstract

Based on 3-D, unsteady and compressible flow Reynolds-averaged N-S equations and SST k-ω turbulence model, adopting the overlapping grid technique, effects of 3 line spacings of 4.6 m, 4.8 m and 5.0 m on crossing pressure wave during 2 high-speed trains meeting in a tunnel at speeds of 250 km/h, 350 km/h and 400 km/h were studied.In view of the harm of intersection pressure wave, the effects were presented from three aspects including the maximum pressure value of car body, the pressure difference on both sides of car body and the phenomenon of “head-tail wave”.Results showed that the time history curve shape of the pressure difference on both sides of car body is similar to that of crossing pressure wave in open line; when the head and tail of the met train passing the measurement points, the pressure difference produces firstly positive and then negative pulses and firstly negative and then positive pulses, respectively, the pressure difference generated by the train tail passing is obviously lower than that by the train head passing; the amplitude of the head wave is about two times of that of the tail wave; the maximum positive pressure, the maximum negative pressure, the maximum pressure peak value, the amplitude of pressure difference on both sides of car body and the amplitude of “head and tail wave” have a negative exponential relationship with line spacing.

导出引用

胡啸1，孔繁冰2，梁永廷2，于淼2，段修平1，梅元贵1. 线间距对高速列车隧道内交会压力波影响的数值模拟研究[J]. 振动与冲击, 2020, 39(21): 79-88

HU Xiao1, KONG Fanbing2, LIANG Yongting2, YU Miao2, DUAN Xiuping1, MEI Yuangui1. Numerical simulation for influence of line spacing on crossing pressure wave of high-speed trains in tunnel[J]. Journal of Vibration and Shock, 2020, 39(21): 79-88

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