地铁列车进站过程中活塞风对站台屏蔽门的影响——以杭州地铁为例  

Influence of Piston Wind on Subway Platform Screen Door During Vehicle Entry

作　　者：董梦雪 赵帅帅 DONG Mengxue;ZHAO Shuaishuai(Hangzhou Wanxiang Polytechnic,Hangzhou 310023,China)

机构地区：[1]杭州万向职业技术学院,杭州310023

出　　处：《河南科学》2021年第10期1575-1580,共6页Henan Science

基　　金：浙江省教育厅科研项目(Y201942546)。

摘　　要：以活塞风为研究对象,采用SST k-ω模型进行非定常计算,研究了地铁列车进站过程中产生的活塞风对站台全封闭屏蔽门的影响.研究结果表明,在列车进站过程中,活塞风井对活塞风的疏导作用与列车位置相关,距离车头位置越近的活塞风井对活塞风的疏导作用越大;列车在进站过程中会引起屏蔽门表面压力发生变化,该压力在车头通过第一个活塞风井后达到峰值,站台屏蔽门破损风险较大,且越靠近该活塞风井的屏蔽门表面压力波动幅值越大;在列车进站过程中,活塞风井内存在着回流区,且该回流区不断发展演化,与列车对空气挤压产生的活塞风相互叠加,导致屏蔽门表面压力反复振荡.With the piston wind as object,by using SST k-ωturbulence models for unsteady calculation,the effect of the piston wind on the subway screen door during vehicle entry is studied.The results showed that the dredging effect of piston wind shaft on piston wind is related to the vehicle position in the process of subway train entering the station.The closer the piston air shaft is to the front of subway train,the greater the dredging effect of piston air shaft on piston wind is.The process of subway train entering the station will cause the change of platform screen door surface pressure,which reaches the peak after the front of the vehicle passes through the first piston air shaft,and the closer the piston air shaft is,the greater the fluctuation amplitude of platform screen door surface pressure is.In the process of subway train entering the station,there is a reflux area in the piston air shaft and continues to develop and evolve.It overlaps with the piston wind generated by the air extrusion of subway train,resulting in the repeated oscillation of the surface pressure of platform screen door.

关 键 词：活塞风 地铁列车 站台屏蔽门 非定常流动 

分 类 号：U45[建筑科学—桥梁与隧道工程]