Application Research Of BIM Technology In Fire Safety Management Of Construction Site

Due to the large number of open fire operations,dense flammable materials,and large personnel density at the same time period,the construction site is prone to fire,which also increases the difficulty of personnel evacuation.Therefore,how to improve the level of fire safety management in construction site,in order to effectively prevent the occurrence of fire and improve the efficiency of personnel evacuation has become an urgent problem for fire safety management in construction site.BIM technology has been applied in various stages of the construction industry due to many characteristics.The main purpose of this study is to apply BIM technology in the fire safety management of the construction site,to provide auxiliary help to solve the problems existing in the traditional management mode,and to analyze and discuss the practical application of BIM technology in the fire safety management system of the construction site.The specific content and relevant conclusions of this paper are as follows:(1)Based on the research background of a new media industrial park project,this paper analyzes the advantages of BIM technology application in the construction site based on the fire safety management theory.According to the research purpose and numerical simulation requirements,the Revit software is used to establish a full professional model and a Three-dimensional field layout model of the building under construction.At the same time,the application framework of fire safety management on construction site based on BIM was constructed,and the overall layout of construction site was analyzed from three aspects of three-dimensional roaming,information management of temporary facilities and quantity statistics of works,so as to optimize the fire safety management mode on construction site.(2)Processed and imported Pyrosim and Pathfinder with the established model,conducted fire simulation and staff evacuation simulation for the living area sheds,office areas and building decoration and decoration construction.The smoke distribution and flow rule are analyzed in the fire simulation,and the temperature change and CO volume fraction change are discussed,and the available safety time is obtained.The results of fire simulation show that smoke is the most dangerous factor to human body,and the influence of smoke becomes less when building ventilation condition is better.Processed and imported Pyrosim and Pathfinder with the establishedmodel,conducted fire simulation and staff evacuation simulation for the living area sheds,office areas and building decoration and decoration construction.The smoke distribution and flow rule are analyzed in the fire simulation,and the temperature change and CO volume fraction change are discussed,and the available safety time is obtained.The results of fire simulation show that smoke is the most dangerous factor to human body,and the influence of smoke becomes less when building ventilation condition is better.(3)According to the results of fire simulation,set up key position traffic condition,according to the actual situation of construction site add obstacles evacuation simulation,the results show that the living quarters barrack and decoration construction during the evacuation process appear turn-back phenomenon,and office area satisfies the requirement of evacuation,and decoration during the period of construction plan 1evacuation total time is less than 2.On the basis of the former simulation,the optimization of personnel evacuation plans in different areas is carried out,and the fire safety management countermeasures and relevant Suggestions are obtained.