摘要
以某砖木结构单层古建筑作为研究对象,利用FDS建模并对古建筑火灾进行数值模拟研究,分析火灾过程中热释放速率、火场温度、能见度和CO浓度变化规律,对古建筑火灾危险性进行综合评价。古建筑火灾过程中氧气供应不足为主要限制因素,火场热释放速率先升高再降低,之后再上升;火场内能见度低,CO浓度高,严重影响人员疏散与火灾扑救。火灾过程中古建筑屋顶与屋檐处积聚大量热量与烟气,易烧毁。
A single-story ancient building of brick and wood structure was researched,FDS was used to build the numeral model of the ancient building and the fire in it was simulated.The heat release rate,temperature,visibility and CO volume concentration of the fire were analyzed to evaluate the fire danger of ancient building comprehensively.Insufficient supply of oxygen was the main limiting factor of the fire of ancient building.The heat release rate of the fire rose at first and then decreased,then rose again.There were low visibility and high CO volume concentration in the ancient building during the fire,which increased the difficulty in evacuation and firefighting.During the fire,in the ancient building,the roofs and the eaves which accumulated a lot of heat and smoke were easy to burn out.
作者
田垚
常可可
李奥
TIAN Yao;CHANG Ke-ke;LI Ao(School of Resources and Safety Engineering,China University of Mining and Technology (Beijing),Beijing 100083,China)
出处
《消防科学与技术》
CAS
北大核心
2019年第1期101-104,共4页
Fire Science and Technology
基金
国家重点研发计划项目(2018YFC0808101)
国家自然科学基金项目(51874313)
关键词
古建筑火灾
数值模拟
FDS
热释放速率
温度分布
能见度
火灾危险性
ancient building
numeraI simulation
FDS
heat release rate
temperature distribution
visibility
fire danger
作者简介
田垚(1989-),男,河北唐山人,中国矿业大学(北京)资源与安全工程学院博士研究生,主要从事古建筑火灾研究,北京市海淀区学院路丁11号,100083。
