针对某建筑双层幕墙间的防火分隔设计能否阻止火灾跨层蔓延的问题,采用FDS火灾计算软件,对标准层发生不同规模的火灾后,烟气向内外、凹凸两外幕墙单元蔓延至“通风腔”内的温度分布进行计算,得出不同场景下幕墙的破裂规律,并根据计算结果评估火灾风险,采取相应的保护方案,降低其火灾危险性。 Aiming at the problem of whether the fire separation design between the two walls of a building can prevent the spread of the fire across the layers, the FDS fire calculation software is used to fire the smoke of different scales to the standard layer, The calculation of the temperature distribution in “Ventilation chamber” shows the rupture law of the curtain wall in different scenarios. According to the calculation result, the fire risk is evaluated and the corresponding protection scheme is adopted to reduce the fire risk.