CAJ | 학술논문

地下商业街处于相对封闭的环境，在强制通风不利的情况下，内装修材料可燃性对火灾影响显得特别重要。应用FDS火灾模拟软件的大涡模拟（LES）模型，对分别采用木质、石膏板、PVC材质顶棚的地下商业街进行火灾模拟，重点讨论了不同顶棚材料对烟气温度、体积分数的影响。模拟结果表明，木质顶棚装修材料明显增加烟气体积分数、加速火灾轰然的形成。烟气蔓延速度快，烟气中CO最高浓度是其他两种材料的40倍，因此应限制地下商业街商户装修中使用木质顶棚材料。
지하상업가처우상대봉폐적배경，재강제통풍불리적정황하，내장수재료가연성대화재영향현득특별중요。응용FDS화재모의연건적대와모의（LES）모형，대분별채용목질、석고판、PVC재질정붕적지하상업가진행화재모의，중점토론료불동정붕재료대연기온도、체적분수적영향。모의결과표명，목질정붕장수재료명현증가연기체적분수、가속화재굉연적형성。연기만연속도쾌，연기중CO최고농도시기타량충재료적40배，인차응한제지하상업가상호장수중사용목질정붕재료。
Underground commercial streets are in a relatively closed environment, the flammability of interior decorative materials is particularly important in the case of unfavorable forced ventilation. FDS fire simulation software of large eddy simulation (LES) model is applied to simulate the wood, gypsum boards, PVC material ceiling of the underground business streets and the impact of different ceiling materials on flue gas temperature and volume fraction is discussed. The simulation results show that the wooden ceiling decoration materials can significantly increase flue gas volume fractionand accelerate fire crashing formation and that smoke spreads fast and the highest concentration of flue gas CO is 40 times that of the other two materials. Therefore, the use of wooden ceiling materials in the underground business street decoration should be restricted.