Research On Emergency Management In The Subway Station Based On BIM

With the increase of subway operation line and the growth of passenger flow,the number of emergencies of subway stations have also shown an upward trend.This brings greater challenges to the emergency management of subway stations and puts forward higher requirements for emergency management.How to improve the emergency management efficiency of subway station by means of effective information technology has become an critical research topic nowadays.Emergency management of subway stations lack a set of model and a platform that carry emergency management information.The BIM(Building Information Modeling)technology provides reliable technical means and solution for this problem.It can well integrate 3D model of subway station,and support data sharing of the whole life cycle.Therefore,according to the characteristics of the subway station,the paper attempts to adopt the BIM technology to the emergency management of the subway stations.In order to improve the emergency management efficiency of the subway station,this paper has done the following research work:(1)For the actual situation that the information provided by the general design or completion model can not meet the needs of emergency management work,this paper studied the modeling scope and modeling standards of BIM modeling,applied to the emergency management of subway stations.According to the research results,this paper used the Revit to build a subway station emergency management BIM model based on an actual subway station.(2)The safety judgement of the subway station under the fire conditions is an important part of the emergency management.Based on the established subway station emergency management model,this paper carried out BIM-based fire simulation and personnel evacuation simulation.By using the BIM technology,The cumbersome process of manual modeling in the simulation software is avoided,the period of the fire safety determination link in the emergency management work is effectively shortened,and the work efficiency of this link in the emergency management work is improved.(3)There is a problem that data communication between Revit and Pyrosim,a fire simulation software,is not smooth,and a method for improving data communication efficiency between the two softwares is studied.This method used Revit's secondary development technology to achieve accurate and rapid extraction of material information from the established subway station BIM modle,thereby improving data communication efficiency in emergency management.(4)By comparing the BIM-based fire simulation analysis results with the BIM-based personnel evacuation simulation analysis results,the security of each key location of the subway station was determined,and according to the safety problems presented in the simulation process,the paper studied the corresponding emergency optimization measures to improve emergency management efficiency.(5)This paper studied the method of displaying and checking 3D dynamic process of the fire smoke and the personnel evacuation simultaneously in the established subway station BIM modle.This article couple the BIM-based fire simulation results with the BIM-based evacuation simulations results and achieved the simultaneous observation of fire smoke development process and personal evacuation process in the 3D subway station environment under a single software environment.The simulated scene presented is more realistic and easier to understand.(6)Researched how to integrate the information which are concerned in the emergency management work into the BIM platform.The paper used the Revit API to develop the “emergency management” plug-in,and integrate the emergency management information to the BIM platform.The plug-in bring the staff convince in the process of using data.The article analyzed the practical value of “emergency management” plug-in in improving emergency management efficiency of subway stations.