Simulation Of Fire Emergency Evacuation In Multistory Buildings And Study On Personnel Behavior Characteristics

With the increasing number of city dwellers in China,the economic strength continues to improve.Multistory buildings have been widely used in urban areas.A multistory building is a building with a height of more than 10 meters and less than 24 meters,and a number of floors above three storeys and below seven floors.Complex functional structure,large personnel density,narrow corridor,large number of rooms and adjacent to each other,fire load is a typical feature of multistory buildings.In the event of a fire accident,the trapped injury and even death of a person will cause huge economic losses and loss of talent.Therefore,the safety evacuation problem of multistory building fire personnel needs to be solved urgently,which plays an important role in controlling the occurrence of fire.By means of consulting the relevant literature and questionnaire survey,a large number of personnel in the fire emergency evacuation process of the basic characteristics and personnel behavior response data was been collected and collated in this article.At the same time,the basic characteristics of personnel behavior and other factors affecting on the evacuation time of the impact of personnel in the event of fire was been analyzed.Finally,the corresponding targeted recommendations were put forward by combination of various influencing factors.The model of PyroSim and Pathfinder was established on the background of No.second student apartment in the Capital University of Economics and Business,and the critical value of fire hazard was obtained by numerical simulation of flue gas in multistory building with PyroSim fire numerical simulation software.and the Pathfinder evacuation simulation software is used to simulate the impact on the evacuation time of people in the fire.The dynamic process of emergency evacuation and the safe evacuation time of personnel in the fire period of this multistory building are calculated by simulation.The behavior characteristic data of a large number of people evacuated were obtained by questionnaire survey,and the correlation between the basic characteristics of personnel and the evacuation behavior was analyzed by SPSS.In the course of the survey,most of the investigators were familiar with the safe exit and emergency evacuation signs,but only a small part of the respondents were able to know where the corridor fire extinguisher and alarm buttons existed and were proficient in their use.From the correlation aspect research,the factors that have significant correlation with the characteristics of evacuation behavior are the gender,the safety training education experience in fire protection and the familiarity with the safe export in the building.Combining with the basic characteristics of personnel,some practical countermeasures are put forward in this paper.