Research On Evacuation Of Passengers In Terminal Building Based On Cellular Automata Model

The Thirteenth Five-Year Plan for Civil Aviation of China points that it is necessary to ensure safety as a prerequisite to build a safe,efficient,and green modern civil aviation system.The terminal is an extremely complex large-scale transportation infrastructure.Once a safety accident occurs,the consequences will be very serious.When the existing static evacuation plan of the terminal building responds to the dynamic change of the distribution of personnel,it is mainly adjusted based on the past experience of people,and the evacuation effect of this kind of control is often uncertain.Therefore,through the efficient and low-cost computer simulation technology,the improved evacuation model and the efficient route optimization algorithm can be combined to quantitatively obtain the effect of the evacuation simulation and provide certain theoretical support for optimizing the evacuation plan of the terminal building.This paper mainly improves the cellular automata model and the ripple-spreading algorithm,and adds the corresponding personnel characteristics,so that the model can reflect the speed difference of different personnel,the capacity difference of different cells,and the path similar to real life crowding,Waiting and other characteristics.Among them,the improved cellular automaton model is used as the main body to simulate evacuation,and the improved ripple diffusion algorithm is used as the optimal evacuation path for people.By simulating the evacuation situation of the terminal building,the evacuation effect difference between the original evacuation route of the terminal building and the optimal evacuation route calculated by the algorithm is compared;in the case of optimization,the evacuation route is further improved to achieve the goal of evacuation during the evacuation process.The purpose of reducing evacuation time and reducing path congestion.In the end,an ideal evacuation plan for the terminal building was obtained.Through simulation experiments,this article has the following conclusions:(1)The optimal evacuation path calculated by the improved ripple-spreading algorithm is more effective than the original evacuation path of the terminal building,and the evacuation effect is better after adding evacuation points according to the evacuation process.(2)The evacuation effect of different personnel distribution and the same evacuation route may be the same,but it may also be the opposite.Therefore,the planning of evacuation routes should not be static,but needs to be improved.(3)The optimal evacuation plan is not optimal in every single aspect of evacuation time or path congestion,but the best after comprehensive comparison.Therefore,this article puts forward suggestions for the evacuation route planning of the terminal building:The evacuation route of the terminal building should be combined with the distribution of personnel and the road network.The static evacuation route is not a fixed and universal one.With technology development,a dynamic plan library can be set up to store different types of evacuation routes to deal with different types of evacuation routes.Evacuation of people in the situation.At the same time,the research in this article also provides certain theoretical support for management methods such as planning evacuation routes and regulating the flow of people in various places.