Research On Crowd Evacuation Simulation Method In Large Shopping Mall

In recent years,with the rapid development of science and technology and the development of the domestic economy,people’s living standards have gradually improved.Large shopping malls have gradually become an important place for people to live and entertain,and various safety issues have followed.At present,many large shopping centers have problems with irregular structures,dense staff,and closed spaces.If an emergency occurs and the evacuation is not timely,it will cause unpredictable consequences.Therefore,evacuation maneuvers and evacuation simulations have become particularly important.Traditional crowd evacuation exercises are costly,and it is not easy to change the structural planning in evacuation scenarios,so it is difficult to obtain rich site management and planning data.Through computer simulation,large-scale crowd evacuation simulation can be achieved,thereby reducing costs to a minimum and achieving the effect of evacuation drills.By modeling and analyzing pedestrian characteristics and evacuation plans in crowd evacuation scenarios under different evacuation scenarios,potential dangerous accidents can be avoided and the safety of personnel in evacuation scenarios can be ensured.The main content of this article is to conduct statistical analysis by observing the distribution,retention,and peak hours of the crowd in the corresponding period of the shopping mall based on the field survey of the crowd.In view of the traditional social force model,it is difficult to deal with the problems of single pedestrian trajectory and loose crowd in the process of crowd evacuation,and an improved social force model is proposed.Firstly,based on the original social force model,the movement trajectory of the person is changed by considering the choice of the movement direction during the movement of the pedestrian.Then,the intensity of panic and attraction in the process of pedestrian evacuation is considered to reproduce the self-organizing behavior in the process of pedestrian evacuation,and the simulations are performed in individual and group mode.Finally,the authenticity of the population model is verified by the selforganizing population morphology in the real video.The experimental results show that the improved pedestrian model can simulate the trajectory of pedestrians more realistically and reasonably,and the model is reasonable and effective.By setting up a crowded evacuation analysis similar to a real shopping mall,the key factors affecting the overall crowd evacuation time are determined.The main work of this article is as follows:(1)By studying the distribution of crowds in large shopping malls,based on the observation experiments of real scenes in the video,the flow of people and the distribution of crowds in various periods of the shopping mall are analyzed,and the crowds are studied.(2)Aiming at various forms of crowd movement and based on the state of crowd movement in real scenes,an improved Social Force Model based on the original Social Force Model is proposed.By considering the choice of movement direction during pedestrian evacuation,the walking trajectory during pedestrian evacuation was changed.By considering the intensity of panic emotions and attractiveness during pedestrian evacuation,reproduce the self-organizing behavior during pedestrian evacuation,and perform simulations in individual and group modes,and introduce self-organizing group patterns in real video for comparison and verification The authenticity of the group form.(3)Carry out evacuation simulation experiments under the establishment of a similar simulated shopping mall experiment scenario,and analyze and study the evacuation simulation results.Identify the unfavorable evacuation points that people tend to appear during the evacuation process,thus affecting the entire evacuation effect.Adding guides through zoning alleviates the congestion of evacuated pedestrians during the evacuation process,effectively solves the problem of uneven distribution of exits,and improves the overall evacuation efficiency.By changing the number of angles at the corners or changing to radians,the effect of evacuation time is reduced,and experiments have proved that the model has certain use value.