市域轨道交通穿越洞口和中间风井承压特性研究  

Study on Pressure-bearing Characteristics as Regional Rail Transit Train Passing through Tunnel Portals and Intermediate Air Shafts

作　　者：阎正才[1] 周丹[2] 陈城 郑晋丽[1] Yan Zhengcai;Zhou Dan;Chen Cheng;Zheng Jinli

机构地区：[1]上海市隧道工程轨道交通设计研究院 [2]中南大学

出　　处：《隧道与轨道交通》2024年第1期51-54,82,共5页Tunnel and Rail Transit

摘　　要：市域轨道交通列车进入隧道洞口、长大区间中间风井区段时,列车运行产生的空气动力学效应对隧道结构、区间设备等的承压,对乘客舒适性的影响非常突出。采用数值计算分析方法对列车高速通过隧道洞口、长大区间中间风井进行仿真模拟,研究不同的洞口缓冲结构、不同的中间风井通风面积和通风长度下隧道内压力波的变化规律,分析列车车体表面、隧道壁面、区间旁通道及防火门、区间设备箱的承压,并根据车内压力变化率确定满足乘客舒适性标准所需的车辆密封性指标要求。When a regional rail transit train passes through tunnel portals or intermediate air shafts of a long interval,the aerodynamic effect generated by the train is very prominent for the pressure-bearing of the tunnel structure,interval equipment,etc.,as well as for the comfort of the passengers.The train passing through the tunnel portal and intermediate air shaft of a long interval at a high speed was simulated by numerical calculation to study the change rule of the pressure wave in the tunnel with different portal buffer structures,different ventilation areas and lengths of the intermediate air shafts,and analyze the pressure bearing of the train body,tunnel wall,cross passages,fire doors,and the equipment boxs.The train airtightness index which can meet the passenger comfort standard is determined according to the pressure change rate inside the train.

关 键 词：市域轨道交通 空气动力学 阻塞比 车辆密封性 洞口缓冲结构 中间风井 压力变化 

分 类 号：U231[交通运输工程—道路与铁道工程] U270.11[机械工程—车辆工程]