Simulation Study On Pedestrian Escape In Gymnasium Based On Path Cost Model

In emergencies,people often show instinctive panic,which directly affects pedestrian escape behavior and poses a great threat to the safety of the crowd.The stadiums are crowded,so in an emergency,panic can easily result in chaotic behavior and affect public safety.In order to study the impact of panic emotions on the escape efficiency of stadium pedestrians,this paper combines pedestrian panic behaviors,psychological behaviors and dynamics laws to summarize pedestrian evacuation characteristics,social behaviors and dynamic characteristics under panic emotions,and defines the degree of panic and pedestrians as well as the concepts such as the probability of herding behavior and the probability of choosing the nearest exit,taking into account the interaction between pedestrian psychology,behavior and environment;constructs a pedestrian escape path equivalent cost model algorithm suitable for stadiums and an optimal escape path equivalent cost mechanism;establishes a panic mood affected by the choice of evacuation exits,fully considering the influencing factors of pedestrian panic and forming an escape path equivalent cost model.In order to quantitatively study the impact of panic on the efficiency of escape,Any Logic software is applied to simulate the escape of pedestrians in a sports stadium in Chongqing and the verify the validity of the model.The simulation data is used to analyze the problems in the process of pedestrian escape.Based on the shortest path and the congestion-free escape allocation scheme,this paper distinguishes between pedestrian panic and non-panic path selection scenarios,with the goal of alleviating congestion and reducing the total time for escape,rationally selecting the escape path and determining the key time and location for emergency evacuation through analysis,proposing to widen the width of the evacuation passage opening at the crowded area around.The research results show that the equivalent cost of pedestrian escape path is significantly positively correlated with panic coefficient,and negatively correlated with the distance from pedestrian to exit.The degree of panic has the greatest impact on the equivalent equivalent cost of escape path,which proves the importance of controlling crowd panic work in emergency safety management.To prevent the spread of pedestrian panic,it is necessary to reduce the number of panic emotions caused by emergencies as much as possible,and strengthen the evacuation guidance for pedestrian escape between 210-220 and 320-330 seconds.Through the case simulation,this paper finds the crux of the emergency escape.The pedestrian escape path equivalent cost model can reduce the crowding degree of escape and provide a relatively reasonable escape path for each pedestrian,which can describe the movement characteristics of the pedestrians in the stadium and simulate the crowd in the stadium.The state of escape provides new research ideas for the crowd to escape,and provides valuable information for the emergency response of the stadium;it is instructive for optimizing the emergency evacuation plan of the stadium and provides facilities planning and functional design for the stadium,provides objective and quantitative decision-making suggestions and a reference for promoting the emergency management level of sports venues.