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建筑幕墙外保温系统火灾事故频发,火灾危险性大,其防火安全性能已成为社会关注的焦点问题。利用FDS软件模拟了不同宽度、不同位置防火封堵下幕墙保温系统的火灾蔓延情况,讨论了防火措施抑制火焰传播的有效性和可行性,并提出了最优的防火构造组合。模拟结果表明,当防火封堵的宽度达到100mm,防火隔离带的宽度为300mm时,系统已具有较好的防火性能。可将其设为防火构造设计的基准参数,供综合考虑实际工程的应用性和经济性参考。
Building exterior insulation system fire accidents, fire danger, fire safety performance has become the focus of attention of the community. FDS software was used to simulate the fire spread of curtain wall insulation system with different widths and locations. The effectiveness and feasibility of fire prevention measures to suppress flame propagation were discussed, and the optimal combination of fire prevention structures was proposed. The simulation results show that when the width of the fire blocking reaches 100mm and the width of the firebreaking strip is 300mm, the system has good fireproof performance. It can be set as a benchmark for fire protection design, for comprehensive consideration of practical engineering and economic reference.