Research On Emergency Evacuation Of Fire In Light Rail Station Based On BIM Technology

Rail transit is the lifeblood and foundation of the city.It has effectively improved the accessibility between regions,and gradually become the preferred way for citizens to travel.As an important part of urban rail transit,light rail undertakes the mission of escorting passengers to arrive safely.Once an accident occurs,it will inevitably have a great negative impact.Therefore,how to effectively carry out the emergency evacuation task in the emergency situation has become a problem in the current society.BIM(building information modeling)technology can integrate the three-dimensional model of the station,and support the real-time data sharing and exchange of all participants and different software in all stages of the project.According to the characteristics of the station,it is possible to apply BIM Technology to the fire protection work of the station,so as to improve the efficiency of emergency evacuation of passengers.In view of the above background and practical problems,this study first analyzes the relevant theories of station fire risk and personnel evacuation by consulting a large number of data,specifically introduces BIM Technology and its characteristics,and provides the possibility and relevant technical support for the application of BIM Technology in the fire evacuation simulation of rail transit;secondly,through field investigation,taking a light rail station as an example,analyzes the BIM of the station Building information model,using BIM tools and Revit software to model,connecting DXF format with Pyrosim software,determining fire simulation parameters of light rail station,simulating the law of fire smoke spread of light rail station,analyzing the process of light rail station fire under different light rail station fire conditions;then,using Pathfinder simulation software to simulate light rail station people personnel evacuation,setting evacuation simulation parameters,analyzing the two situations of light rail station hall fire and train fire,it is found that the evacuation can not be completed completely when the light rail station hall fire,and the evacuation time of train fire is enough to meet the evacuation requirements;finally,simulating smoke dispersion and personnel evacuation under two fire conditions,feasible evacuation measures are summarized in order to enhance emergency evacuation management ability and fire safety,as well as ensure personnel safety.