带疏散通道的高速铁路隧道内列车风分布特征  

Train Wind Characteristics of High-Speed Railway Tunnel with Evacuation Exits

作　　者：郝明东[1] 杜礼明[1] 李泉[1] 

机构地区：[1]大连交通大学辽宁省高等学校载运工具先进技术重点实验室,辽宁大连116028

出　　处：《大连交通大学学报》2014年第A01期33-37,共5页Journal of Dalian Jiaotong University

基　　金：牵引动力国家重点实验室开放基金资助项目(TPL0906)

摘　　要：采用数值方法对高速列车在带疏散通道的隧道内列车风时程变化规律和空间分布特征进行了研究.结果表明,测点处列车风的风速在车头与车尾经过时变化较剧烈,隧道纵向列车风最大值出现在列车完全进入隧道后的时段,且车头、车尾附近的列车风以横向风为主.隧道内会车时,列车风的时程变化规律与单车运行情况下基本相同,由于列车风反向叠加,两车之间的列车风风速很小,且在在隧道内呈中心对称分布.近列车疏散通道内纵向列车风变化规律与隧道中线附近的列车风基本相似,而远列车侧疏散通道内纵向列车风风速变化相对缓和.The schedule change rules and spatial distribution characteristics of high-speed train wind passing through a tunnel with evacuation exits were numerically analyzed. The results show that train wind speed in the observing point where the train head and the rear passing by changes severely, and the maximum longitudinal train wind appears during the whole train entering the tunnel completely. Near the head and the rear of the train, lateral wind is dominant. For the two trains meeting in tunnel, the schedule change rules are almost the same as one train passing through. The differences are that wind speed between the two train is very small, and it distributes symmetrically in the center of the tunnel due to reverse superposition of the train winds. It al- so indicates that the change rules of longitudinal train wind in the evacuation passage with a train nearby is similar to that of the tunnel central line, while the longitudinal train wind in the evacuation passage away from the train changes relatively moderate.

关 键 词：铁路隧道 列车风 疏散通道 高速列车 时程变化规律 

分 类 号：U451.3[建筑科学—桥梁与隧道工程]