摘要
为研究吊顶形式(纵向和横向)对地铁车站烟气流动以及排烟效果的影响,文章采用FDS分别模拟纵向吊顶和横向吊顶两种工况。在其它条件不变的前提条件下,改变吊顶的方向,对比风口排烟效率、站厅层的烟气层高度、安全高度处的烟气温度、安全高度处的能见度,得出两种吊顶模式的优劣。研究结果表明,吊顶的方向对排烟效率、安全高度处的烟气温度基本没有影响;但是在站厅层烟气层高度和安全高度处的能见度方面,纵向吊顶明显优于横向吊顶。因此建议在装修允许的条件下尽量使用纵向吊顶,以强化防排烟效果。
To study the influence of the ceiling form(vertical and horizontal)on the smoke flow and smoke exhaust effect of the station,this paper uses FDS to simulate the two conditions of the vertical ceiling and the horizontal ceiling.Under the premise that other conditions remain unchanged,change the direction of the suspended ceiling,compare the efficiency of exhaust smoke,the height of the smoke layer,the temperature of the smoke at a safe height,and the visibility at the safe height,and obtain the pros and cons of the two ceiling modes.The research results show that the direction of the suspended ceiling has nearly no effect on the smoke exhaust efficiency and the smoke temperature at a safe height;however,the vertical suspended ceiling is significantly better than the horizontal suspended ceiling in terms of the height of the smoke layer and the visibility at the safe height.Therefore,it is recommended to use the vertical suspended ceiling as far as possible under the condition of decoration to strengthen the smoke prevention effect.
作者
潘正海
杨波
PAN Zheng-hai;YANG bo(Wuxi Metro Group Construction Company,Wuxi Jiangsu 214000 China)
出处
《江苏建筑》
2021年第4期77-79,109,共4页
Jiangsu Construction
关键词
吊顶
安全高度
烟气层
能见度
station ceiling
safe height
smoke layer
visibility
