高速列车隧道交会最不利长度实车试验研究  

Vehicle Test Study on the Most Unfavorable Intersection Length of High-speed Trains in the Tunnel

作　　者：林洋[1] 何德华[1] 白夜 张超[1] 

机构地区：[1]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《铁道机车车辆》2017年第6期26-30,共5页Railway Locomotive & Car

摘　　要：根据隧道压力波传播和叠加理论的分析,分别在两条350km/h等级线路上进行了多个速度级的列车隧道通过和隧道交会的实车试验。结果表明:实车监测压力波特性与一维压力波传播与叠加理论分析相一致,两列列车的车外正压与正压和负压与负压均充分叠加;速度为300km/h时列车隧道交会最大压力变化比是隧道通过的1.98倍,隧道长度越接近最不利长度时压力波叠加更充分。According to the analysis of tunnel pressure wave propagation and superposition theory,the experiments of real vehicles passing through the tunnel and intersection in the tunnel were carried out upon different velocity levels on railway line.The results show that the pressure wave properties from real vehicle monitoring are consistent with the theory analysis of one-dimensional pressure wave propagation and superposition.It turns out that the two trains＇ outside positive pressures are fully overlapping and the same as the outside negative pressures.Maximum pressure change ratio of train tunnel intersection 1.98 times that of passing through the tunnel at the speed of 300 km/h.The pressure waves overlap more fully when the tunnel length is close to the most unfavorable length.

关 键 词：高速列车 隧道交会压力波 实车试验 

分 类 号：U260[机械工程—车辆工程]