候机楼大空间建筑自然排烟可行性分析

Analysis on the feasibility of natural smoke exhaust on the terminal

利用FDS软件模拟了某候机楼在发生火灾时的温度场、烟气体积分数、可见度、以CO为代表的有毒有害气体体积分数等情况,分析了候机楼大空间建筑的火灾特性。结果表明,采用顶棚排烟窗的自然排烟方式可以保证最不利火灾场景下烟气层不会下降到大厅三层,且温度、能见度、CO体积分数等均在人员可承受范围内。

Fire characteristics of the terminal buildings were ana lyzed. As fire simulation software, FDS was used to simulate the fire parameters in the building such as temperature field, smoke concentration field, visibility, poisonous and harmful ga- ses concentration field represented by CO. The results illustra- ted that natural smoke exhaust method with ceiling windows can guarantee the fire smoke would not fall to the third floor, and the temperature, smoke concentration, visibility and CO concentration were in the withstanding range of evacuees under the most unfavorable fire scenario.