楼梯间自然防烟与首层房间窗口面积研究  

Smoke Protection of Stairwell and Window Area of First Floor Room

作　　者：李钰 张亚龙 LI Yu;ZHANG Yalong(School of Traffic and Transportation Engineering,Dalian Jiaotong University,Dalian 116028,China;School of Civil Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028 [2]大连交通大学土木工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2020年第5期94-97,共4页Journal of Dalian Jiaotong University

基　　金：辽宁省自然科学基金资助项目(20180550336)。

摘　　要：运用火灾动力学FDS软件,以12层高度48m的办公楼为物理模型,通过首层火源房间的自然排烟窗面积的改变对其在自然通风模式下的楼梯间防烟效果的影响进行数值模拟研究.研究结果表明,首层火源房间设置有效面积不小于该房间建筑面积2.5%的自然排烟窗,烟气不会进入楼梯间,可以得到更优的防烟效果.对《建筑防烟排烟系统技术标准》GB51251-2017优化提出修订建议.The office building with a height of 48 m and 12 stories is taken as the physical model,the influence of natural smoke exhaust window area of the first-floor fire source room on the smoke prevention effect of the stairwell in the natural ventilation mode was numerically simulated using FDS software.The results show that the effective area of the fire source room on the first floor is not less than 2.5%of the building area of the room,and the smoke will not enter the stairwell.Suggestions are proposed for the optimization of Technical Standards for Smoke management Systems in Buildings GB51251-2017.

关 键 词：楼梯间 FDS 自然开窗面积 自然通风防烟 

分 类 号：TU892[建筑科学] TU834