高速列车在艰险山区铁路长大隧道运行时的乘坐舒适性研究  

Study on riding confort of high-speed trains running in a long railway tunnels in treacherous mountainous areas

作　　者：敬霖 刘磊[1] 黄初贤 黄志辉[1] JING Lin;LIU Lei;HUANG Chuxian;HUANG Zhihui(State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学轨道交通运载系统全国重点实验室,成都610031

出　　处：《交通科技与经济》2024年第4期1-11,共11页Technology & Economy in Areas of Communications

基　　金：国家自然科学基金项目(12122211)。

摘　　要：为探讨艰险山区铁路长大隧道特殊线路环境对高速列车乘坐舒适性影响,考虑隧道内沿线高地温分布情况,建立列车隧道运行的计算空气动力学数值仿真模型和列车多体动力学模型,分析隧道温度和海拔高度对列车在长大隧道运行时车内压力及列车运行平稳性的影响规律。结果表明,在高地温隧道环境下,车内压力变化幅值最高下降13.2%,车体横向振动加速度仅在交会时减小,列车运行平稳性指标最高下降3.36%;随着海拔上升,车内压力变化幅值呈线性下降,列车运行平稳性指标减小,车体横向振动加速度仅在进出隧道及交会时减小。研究结果对保证高速列车在艰险山区铁路隧道运行时乘坐舒适性具有重要指导价值。To explore the effect of the special line environment of the long railway tunnel of the treacherous mountainous areas on the comfort of high-speed train,considering the distribution of high geo-temperature along the tunnel,the numerical simulation model of computational aerodynamics of trains running in tunnels and the train multi-body dynamics model were established in this study.The influence of tunnel temperature and altitude on the pressure inside the train and running stability of trains running in long tunnels were investigated.The results show that in the high geo-temperature tunnel environment,the maximum amplitude of pressure change inside the train decreases by 13.2%,and the lateral vibration acceleration of the train body only decreases during intersections and the maximum decrease in the stability index of the train is 3.36%.As the altitude increases,the amplitude of pressure changes inside the train decreases linearly,and the stability index of the train decreases.The lateral vibration acceleration of the train body decreases only for entering into or exiting tunnels as well as at intersections.These results have important guidance value for ensuring the ride comfort of high-speed trains running in tunnels of treacherous mountain railway.

关 键 词：交通工程 艰险山区铁路 高速列车 隧道运行 乘坐舒适性 

分 类 号：U270.11[机械工程—车辆工程]