摘要
以某大学在建学生宿舍为研究对象,分析火灾事故的风险因素,结合燃烧火灾特征,利用FDS对室外保温材料起火、室内木板材料起火、储存在室内的保温材料起火的火灾场景进行模拟,得到火灾特征参数值的变化规律。结果表明:外墙保温板燃烧时,高温会引燃室内堆积的可燃物,发生二次燃烧;木模板燃烧时,烟气迅速充满整栋建筑,短时间内CO体积分数达到危险临界值。对比木模板与保温板火灾模拟结果发现,相同环境下,木模板燃烧的危险性更大。
Taken the multi-storied building under construction as the research object, the risk factors of fire accident were analyzed. According to the characteristics of fire in combustion, the fire dynamics software FDS was used to simulate different fire scenarios, and the change rules of fire characteristic parameters were obtained. The results show that when the outer wall heat preservation board is burning, the high temperature released will ignite the accumulated combustible in the room and produce two combustion. When the wood template is burning, the flue gas quickly fills the whole building, and the CO volume fraction reaches the critical value in a short time; Comparing wood template with insulation board combustion scene, in the same combustion environment, wood template combustion is more dangerous.
出处
《消防科学与技术》
CAS
北大核心
2018年第1期26-29,共4页
Fire Science and Technology
基金
陕西省自然科学基础研究基金项目(2014JM2-5046)
陕西省科技统筹创新工程计划项目(2015KTCQ03-18)
关键词
多层建筑
火灾风险
数值模拟
FDS
multi--storey building
fire risk
numerical simulation
FDS
