摘要
为了探明隧道群效应对车体和隧道结构气动安全的影响,采用数值模拟的方法研究高速磁浮列车通过不同间距隧道群时的压力波特性,并与通过短隧道和长隧道时的压力波特性进行比较。研究结果表明:列车通过隧道群时,耦合气动效应对列车车体的影响大于其对隧道的影响,当隧道间距为0.2倍车长时,车体表面最大压力幅值比通过短隧道时的大14.7%,比通过长隧道时的大16.3%;随隧道间距增加,车体表面最大压力幅值呈阶梯下降趋势,当隧道间距从0.2倍车长增加至1.0倍车长时,车体表面最大压力幅值降低10%左右,而隧道表面压力幅值的变化小于2%。
In order to explore the influence of tunnel group effect on aerodynamic safety of vehicle body and tunnel structure,the pressure wave characteristics of high-speed maglev trains passing through tunnel groups with different spacing distances were investigated by numerical simulation and compared with that of single short and long tunnels.The results show that the tunnel group effect has greater impact on the train than on the tunnel.As the tunnel spacing distance equals to 0.2 times of the train length,the maximum pressure amplitude of train is 14.7%larger than that of a single short tunnel and 16.3%larger than that of a single long tunnel.Furthermore,the maximum pressure amplitude on the train surface decreases with the increase of the tunnel spacing distance in ladder-type.When the tunnel spacing distance grows from 0.2 times of the train length to 1.0 times of the train length,the maximum pressure amplitude increases by 10%approximately,but the change of the maximum pressure amplitude on the tunnel surface is only less than 2%.
作者
黄莎
李志伟
杨明智
王前选
黄尊地
HUANG Sha;LI Zhiwei;YANG Mingzhi;WANG Qianxuan;HUANG Zundi(School of Rail Transportation,Wuyi University,Jiangmen 529020,China;School of Traffic&Transportation Engineering,Central South University,Changsha 410075,China;Key Laboratory of Traffic Safety on Track of Ministry of Education,Central South University,Changsha 410075,China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2022年第5期1770-1781,共12页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(52002290)
江门市科技计划项目(2020JC01009,2019JC01021)
广东省普通高校特色创新类项目(2019KTSCX182)
五邑大学高层次人才科研启动项目(2017RC37,2017RC36)。
关键词
高速磁浮列车
隧道群
隧道间距
压力波
high-speed maglev train
tunnel group
tunnel spacing distance
pressure wave
