辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(5)：538-545,8.DOI:10.11956/j.issn.1008-0562.20240045
城镇"多合一"建筑火灾灾变机理研究
Research on catastrophe mechanism of fires in urban multi-functional integrated buildings
摘要
Abstract
In order to solve the problems of unclear smoke disaster mechanism and difficult evacuation in urban"multi-in-one"building fires,the fire dynamics simulation(FDS)method was used to construct a numerical model of a typical case and carry out the whole process fire simulation research.The results show that the heat release rate(HRR)curve has the stage characteristics of rising,stable,rapid decline and slow decline;the change of HRR was significantly correlated with CO volume fraction,temperature and visibility,and was weakly correlated with effective dose fraction(FED).The burn-through of the sandwich color steel plate wall is the key node of the disaster,and the smoke toxicity and extinction are the main disaster-causing factors.The evacuation time of about 120 s can be obtained by controlling the growth rate of HRR and the smoke flow.The technical defense path of"chain-breaking disaster reduction"proposed by provides a theoretical basis for formulating fire prevention and control measures for such buildings.关键词
火灾动力学模拟/"多合一"建筑/火灾灾变机理/火灾演化规律/烟气毒性Key words
fire dynamics simulation/"multi-functional integrated"buildings/fire disaster mechanism/fire evolution patterns/smoke toxicity分类
资源环境引用本文复制引用
赵卫强,袁泉,句海洋..城镇"多合一"建筑火灾灾变机理研究[J].辽宁工程技术大学学报（自然科学版）,2025,44(5):538-545,8.基金项目
应急管理部研究中心、全国安全职业教育教学指导委员会科教融汇重点课题(AHLLCX2025008) （AHLLCX2025008）
北京工业职业技术学院科研课题(BGY2025KY-20) （BGY2025KY-20）
