顶盖式下沉广场自然排烟系统可靠性分析

Reliability analysis of natural smoke exhaust system for covered sunken plaza

针对某超大型地下商业建筑群的消防设计难点,对有顶盖的下沉广场排烟系统进行了优化设计,结合建筑布局和最不利火灾场景,通过烟气模拟分析论证了该优化方案的可行性。并通过计算店铺玻璃破碎时间,分析机械排烟与自然排烟系统的相互影响以及商铺内排烟优化对下沉广场自然排烟的影响等,进行了排烟深化分析。

Against the fire safety design problems of a large underground commercial building, the natural smoke control system in covered sunken plaza was optimized. Combining with the building layout and the most unfavorable fire scene, the feasibility of the design plan was discussed by smoke simulation. Indepth analysis was conducted by calculating the time of shop glass broken, analyzing interaction between mechanical and na- ture smoke exhausting, and analyzing the influence of optimi zing the shop smoke exhausting to sunken plaza.