地铁车站岛式和侧式站台可调风口屏蔽门通风特性研究
Ventilation characteristics of adjustable vent screen doorson island and side platforms in subway stations
摘要：
以沈阳地铁1号线中街站为例,建立了数值模型,并进行了实验验证。基于所建模型分析了在岛式和侧式2种站台形式下,可调风口屏蔽门系统的风口位置、风口面积及风口开启角度对站台通风特性的影响。结果显示:风口位置对2种站台通风特性的影响不大;站台活塞风量与风口面积呈正相关,但是当岛式站台风口宽度大于300 mm、侧式站台风口宽度大于200 mm时,活塞风量不再增大;当风口开启角度从15°增大到45°时,岛式和侧式站台的活塞风量均显著增大。
Abstract：
Taking Zhongjie Station of Shenyang Metro Line 1 as an example, a numerical model is established and verified by experiments. Based on the established model, the effects of the vent position, vent area, and vent opening angle of the adjustable vent screen door system on the platform ventilation characteristics are analysed under both island and side platform conditions. The results show that the vent position has little effect on the ventilation characteristics of the two platforms. The piston air volume on the platform is positively correlated with the vent area, however, when the vent width exceeds 300 mm for the island platform and 200 mm for the side platform, the piston air volume no longer increases. When the vent opening angle increases from 15° to 45°, the piston air volume for both the island and side platforms significantly increases.
Keywords:subway station; island platform; side platform; adjustable vent screen door; ventilation characteristic; vent position; vent area;vent opening angle