摘要
以某办公大楼的复杂形态共享空间为例,通过火灾危险性分析和场景设计,模拟办公空间及附属空间发生火灾后的烟气蔓延情况,分析复杂形态共享空间的烟气扩散蔓延规律。通过对模拟结果的分析,得到不同比例开口面积的自然排烟对共享空间烟气积聚和扩散的影响、办公区域幕墙玻璃破碎情况、楼层间火灾蔓延情况等。结果表明:共享空间顶部自然排烟窗开口比例大于5%时可以避免层间火灾蔓延;自然排烟窗开口比例为25%时,大部分烟气可通过着火房间所在的共享空间的排烟窗直接排出室外,排烟效果最好。
Taking a complex shape shared space of an office building as an example,by fire hazard analysis and scenario design,smoke spread after fires in the office space and the attached space was simulated and the smoke spread law in complex shape shared space was analyzed.Through the analysis of the simulation results,the effects of natural smoke exhaust with different proportion on the accumulation and spread of smoke in the shared space,breakage of curtain wall glass in office area,and fire spread between floors were obtained.The results showed that the fire spread between floors can be avoided when the proportion of natural smoke exhaust window openings at the top of shared space is more than 5%.Most of the smoke can be directly discharged outdoors through the smoke exhaust window in the shared space where the ignition room is located and the smoke exhaust effect is the best when the opening ratio of natural smoke exhaust window is 25%.
作者
阚强
叶超
KAN Qiang;YE Chao(Tianjin Fire Research Institution of MEM,Tianjin 300381,China)
出处
《消防科学与技术》
CAS
北大核心
2019年第8期1081-1083,共3页
Fire Science and Technology
基金
国家重点研发计划项目“人员安全疏散智能诱导技术与系统”(2016YFC0800602)
公安部消防局应用创新项目“大型商业综合体消防安全管理研究”(2017XFCX15)
关键词
共享空间
自然排烟
数值模拟
烟气蔓延
shared space
natural smoke exhaust
numerical simulation
smoke spread
