对防烟楼梯间及其合用前室分别加压送风防烟方案的流体网络分析

Air flow network analysis of separate pressurization air supply and smoke control schemes in smoke prevention staircase and its common antechamber

应用流体网络分析法,对现行高层建筑防火规范第8章第8.3.2条表8.3.2-2中的风量控制数据进行了校验性计算,揭示了分别加压送风的流动特性。计算结果表明,向防烟楼梯间加压是徒劳的,因为加压送风会直接从防烟楼梯间的疏散外门流失。

By an air flow network analysis,calculates and verifies the data of air flow control in the table 8.3.2-2 of the item 8.3.2 of the chapter 8 in the present fire protection code of tall buildings.Reveals the flow characteristics of separate pressurization air supply.Calculating results show that it is useless to pressure to smoke prevention staircase,since pressurization supply air goes directly from evacuation exterior door.