摘要
为了研究高速列车进入隧道时在隧道内所产生的压力波和向外辐射出去的微压波的规律,开发了一套以压缩空气作为动力来驱动列车模型的缩尺模型试验装置。通过模型试验系统对高速列车突入带喇叭型入口隧道产生的复杂压力场进行模拟,通过分析模型试验结果中的压力及压力梯度曲线所表现的规律,对喇叭型入口削减隧道入口处的最大压力和最大梯度值的效果进行了研究,结果表明:喇叭型隧道入口能够有效地减小压缩波和微压波的影响,其削减效果依赖于入口长度。
In order to investigate pressure waves in high-speed railway tunnel and micro-pressure waves radiated outside due to high-speed train-tunnel entry, a reduced-scale experiment rig has been developed in which the model train is started by compressed air. Complex pressure field generated by a high-speed train passing through a tunnel with a flaring portal is simulated with the help of model experiment system. The pressure curve and the pressure gradient curve of the results of model experiment were analyzed and the effect of tunnel flaring portals for the maximum pressure and the maximum pressure gradient were investigated . The results show that tunnel flaring portals can efficiently alleviate compressive wave and micro-pressure wave. The alleviation effect depends on the length of the portals.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
2004年第4期22-25,共4页
Journal of Sichuan University (Engineering Science Edition)
基金
国家自然科学基金资助项目(50178060)
铁道部科技发展计划项目(2003G001)
关键词
高速列车
隧道
微压波
喇叭型隧道入口
high-speed train
tunnel
micro-pressure wave
model experiment
