摘要
文章对高速铁路固定设施的线间距与列车交会压力波之间关系理论进行了阐述,并以线间距和列车交会压力波关系为理论依据,实际测试不同线间距下列车交会压力波数据,另外采用仿真计算的方法对典型动车组不同线间距下列车交会压力波进行了计算。根据实测和数值仿真数据分析了线间距对列车交会压力波的影响关系,得出交会压力波与线间距关系拟合曲线。研究表明,交会压力波与线间距近似呈负指数关系。最后分别对250 km/h和350 km/h速度等级线路下列车交会压力波进行了预测分析,在实测数据的基础上获得列车更高速度级下交会压力波变化情况。结果表明,现有线间距满足列车以更高速度运行的交会压力波要求,且有较大的安全裕度。
The theory of relationship between line spacing of fixed facilities and pressure wave due to meeting of twooncoming trains is expounded in this paper and based on it, the pressure wave data due to meeting of two oncomingtrains under the conditions of different line spacing is practically tested, moreover, the pressure wave due to meeting oftwo typical oncoming EMUs under the conditions of different line spacing is calculated by simulation calculation method.The fitted curve of relationship between pressure wave and line spacing is got by analyzing the influence of line spacingon pressure wave according to actual measurement and numerical simulation data. The research result shows that it isnegative exponent relationship between pressure wave and line spacing. Finally, the regression analysis is maderespectively on pressure waves due to meeting of two oncoming trains at a speed of 250 km/h and 350 km/h. On thebasis of the measured data, the change of the pressure wave under higher speed level is got. The result shows that theexisting line spacing meets meeting pressure wave requirements under higher running speed and it has a large safetymargin.
出处
《高速铁路技术》
2016年第6期7-11,18,共6页
High Speed Railway Technology
关键词
高速铁路
线间距
交会压力波
high speed railway
line spacing
meeting pressure wave
