Study On Safety Evacuation Of Mall Personnel Under Fire Environment

With the development of social economy,shopping malls,as the most representative commercial buildings,have gradually developed in the direction of more complex functions and larger scales.While meeting people’s pursuit of constantly improving quality of life,there are many problems that cannot be ignored,among which the fire problem is one of the most important issues.In this paper,an actual shopping mall was selected as the specific research object.Three types of fire and seven different fire scenarios were selected,including atrium fire,corridor fire,shop fire.Atrium decoration fire,corridor trash fire and shop fire were setted to conduct safety research on personnel evacuation respectively.Firstly,Pathfinder was used to analyze the fire evacuation scene and obtained the evacuation time and the evacuation process.Secondly,PyroSim was used to determine the arrival time of danger in the staircases（T1,T2,T3,T4,and T5）of the most dangerous building floor on 7 different fire scenarios,and analyzed the evacuation safety of people according to the safety evacuation standard which is that the arrival time of danger should not be lower than the evacuation time.Finally,three evacuation strategies,which can effectively improve the safety of evacuation,were proposed for the fire scene with insufficient evacuation safety,such as closing the stairwell at the right time,reducing the number of evacuees and increasing the width of the evacuation stairs.The safety of evacuation of people in different fire scenes in target shopping malls was investigated through the numerical simulation method.The results maybe provide a certain reference help for the escape of people in shopping malls under fire environment,and provide reasonable guidance for the intelligent evacuation of similar buildings.