地铁高速通过中间风井时乘客舒适性研究  

Research on Passengers'Comfort when Metro Train Passing through Middle Ventilating Shaft at High Speeds

作　　者：杨波 YANG Bo(School of Business,Changsha Social Work College,Changsha 410004,Hunan)

机构地区：[1]长沙民政职业技术学院商学院,湖南长沙410004

出　　处：《湖南工业职业技术学院学报》2024年第6期1-6,30,共7页Journal of Hunan Industry Polytechnic

基　　金：湖南省教育厅科学研究项目“地铁高速通过中间风井对乘客舒适性影响及改进研究”(项目编号:23B0984)。

摘　　要：地铁列车高速通过中间风井时,车内产生的压力脉动影响乘客乘车舒适性。采用不可压、非定常k-ε湍流模型及滑移网格技术,对时速120 km地铁列车通过中间风井时的空气动力学效应进行数值仿真,按密封指数方程进行换算并评估车内乘客舒适性。结果表明:扩大风井处隧道断面面积或提前降低车速均能有效提升乘客舒适性。其中,6.0 m盾构直径隧道的车内压力变化率和3 s内压力变化比5.4 m盾构直径隧道的分别低36.39%和27.25%。5.4 m盾构直径隧道内,地铁列车在中间风井200 m前减速至100 km/h的方案相比其以120 km/h的速度匀速运行的方案,车内压力变化率和3 s内压力变化分别减少10.72%和6.77%,能满足舒适性要求。When a high-speed subway train passes through the middle ventilating shaft of a tunnel,the pressure pulsation inside the train has a large impact on the human ear comfort of the driver and passengers.Using the incompressible and unsteady k-e turbulence model and slip grid technique,the aerodynamic effects of a 120 km/h high-speed subway train passing through the middle ventilating shaft were numerically calculated,and passenger comfort was evaluated according to the sealed index equation.The results of the study show that at a middle ventilating shaft,expanding the tunnel cross-section area and reducing the train speed can effectively improve the comfort of the passengers.Among them,the rate of pressure change and the pressure change in 3 s in the 6.0 m shield diameter tunnel condition were reduced by 36.39%and 27.25%,respectively,compared with that in the 5.4 m shield diameter tunnel condition.When the train changes speed to 100 km/h before 200 m of a middle ventilating shaft,the rate of pressure change and the pressure change in 3 s were reduced by 10.72%and 6.77%,respectively.

关 键 词：地铁 中间风井 压力变化率 变速运行 

分 类 号：U270.2[机械工程—车辆工程]