On Private Station Identification And Emergency Evacuation Simulation Of Urban Rail Transit

Rail transit accidents will bring immense economic losses and casualties to the passengers, even endanger their lives of, therefore, it is critical for rail stations to make evacuation simulations. In view of the large numbers and the quite different characteristics of subway stations, this study analyzed danger-hidden rail network stations and made an exploration that how to evacuate when emergencies.Firstly, this study analyzed the characteristics of rail networks and abstracted the rail transit in center of Beijing as network topology with an application of complex network method; then, the topological parameters were calculated by using matlab programmer; at last, the private railway stations in rail networks were identified.Secondly, this study evaluated the above stations by using fuzzy matter-element evaluation method and analyzed the evaluating indicators quantitatively and qualitatively, according to the method, the correlation of indicators were confirmed accordingly. Results show that Xidan was the station with the lowest correlation and the worst safety, thus, this study made it as the emergency evacuation simulation target.Furthermore, on basis of social force model in normal conditions, this study built a force model which embedded the evacuation factors; then, with a combination of onsite observation and statistical methods, the environmental characteristics and passenger flow of Xidan was analyzed; at last, the density-speed variation rates for passenger flow in simulation stairs and channels was obtained, the rates for evacuation was amended accordingly.Finally, take Xidan station for example, an evacuation model was built by using Anylogic simulation software and by scene setting; l view of station numbers and export equipment attract, conflict points of passenger evacuation routes and panics, this study made a full analysis of impacts on evacuation efficiency and provide a reasonable proposals for how to improve the evacuation efficiency.The results aims to provide a reference for choosing emergency evacuation stations for urban rails and to provide a technical support for conducting emergency evacuation when emergency subway situations.