Study On Pedestrian Dynamics In The Case Of Bi-Direction And Crossing Obstacles

In today’s society,the population has shown a steady upward trend,the pace of life has accelerated,people frequently go out to participate in social activities has been everywhere.Pedestrian congestion is very common in shopping malls,public transport hubs,scenic spots and other places.It causes great inconvenience and delay to people’s lives,and even threat to people’s life safety.How to improve the safety of pedestrian movement and reduce the occurrence of congestion has attracted many scholars to study.This paper first summarizes the current situation of the research on pedestrian flow at home and abroad,and summarizes the relevant research methods.On this basis,a bi-direction pedestrian flow model is established.There are two kinds of pedestrians in the model,one’s target direction is east,the other’s target direction is west.Then it introduces an analysis method of 2-cluster mean-field,which considers the correlation between pedestrians.The 2-cluster mean-field method is used to analyze the bi-direction pedestrian flow model,and then compares the analysis and simulation results to verify the accuracy of the model and the effectiveness of the analysis method.In addition,this paper studies the influence of an obstacle which can be crossed on pedestrian evacuation.First,the evacuation model is established by combining the static floor field,the dynamic floor field and the shortest path selection strategy of pedestrians based on the evacuation experiment scene in Hefei University Of Technology Feicuihu campus.Then the situation of no obstacle,obstacle can’t be crossed and obstacle can be crossed are simulated many times.Through the simulation it can analyze the influence of obstacle height,the distance from the obstacle to the exit and whether the obstacle can be crossed on the evacuation efficiency.Compared with the experimental results,the effectiveness of the model is verified.However,there are still some shortcomings in the process of modeling,which need to be further improved in the future.The research results of this paper can provide reference for infrastructure construction and pedestrian safety management in public places.