Research On Fire Safety Early Warning Visualization And Evacuation In Subway Station Construction Based On BIM

As an indispensable transportation mode for modern cities,the subway is particularly important for subway projects.The structure space of the subway is relatively narrow,closed and below the ground,and the station has a large amount of flow and few imports and exports.Once the subway fire danger occurs,the rescue work is difficult,and it is easy to cause a large number of casualties,and the loss is difficult to estimate.Therefore,it is of great significance to do a good job in preventing the disaster in the subway.This study uses the BIM concept to study the design of fire warning plug-ins using tools such as Revit and C#,and to verify the practicability of the plug-ins through evacuation simulation.Specific research content and work include:First,visual early warning plugin design.With Revit as the development platform,the C# programming language and the Revit program command interface API are used to develop the early warning visualization system and realize the communication between the information and the BIM model.The developed plug-in has three functional modules: information viewing,information processing and information transmission,which realizes real-time viewing of data,automatic warning and sending of mail.Second,information management database design.Research on database-based fire monitoring information integration management method.It classifies and classifies various data tables such as user management and monitoring information.SQL Server 2008 is used as the back-end database to collect and manage the data of the detectors.Then use Visual Studio to write the program and use the functions of the database as a window.The way the value is passed is displayed in the Revit platform.Third,fire warning and evacuation systems.The information visualization technology and the database function are combined,and the fire classification warning mechanism is added to form a fire early warning system.The modeling and simulation methods of fire simulation and evacuation simulation are introduced,and the concept of multi-use BIM model is verified.Fourth,the feasibility test of the fire warning plug-in system based on the example model.Taking the Chuangye Road subway station as an example,the fire warning and evacuation system was brought into the actual project,and the subway fire and evacuation were simulated.The simulation data is brought into the early warning visualization and information management database for testing,real-time viewing of the data received by the detector,over-limit detector warning and management data,etc.Through the analysis of the evacuation time,the available evacuation time greatly exceeds the necessary evacuation.Time,verify the practicality of the proposed method in practical engineering.