Research On Pedestrian Selection Behavior Of Stair And Escalator And Simulation Model In Metro Station Transfer Channel

With the continuous development of urbanization,integrated transport hub playing an increasingly important role in people's travel.In the integrated hub,a variety of transportation modes are integrated,traffic environment becomes more complicated,which make pedestrian traffic safety problem increasingly prominent.Under such a background,it's significant for pedestrian flow organization and optimization of transportation facilities by simulating the walking behavior of pedestrians in various environments.Pedestrian flow simulation have become an important area for many researchers.This paper draws on the research results of pedestrian selection behaviors of stair and escalator and simulation models in subway station channel from domestic and abroad.Analyzing pedestrian flow characteristics in different situations.According to the actual situation,improving the existing model from three aspects:the choice model of stair and escalator,the analysis of the queuing mechanism,and the avoidance behavior of pedestrian in staircase area.Using MATLAB software to program existing and improved models and compare the effects of two model.This paper takes parallel arrangement of facilities in subway station channel as an example.Appling the improved model to simulate the selection behavior?avoidance behavior and queuing behaviors,which verifies the validity of the model.The main research contents of this article are as follows:(1)Taking stair and escalator areas in Xizhimen,Xidan and Caishikou subway station as research sites.Analyzing the selection behavior and queuing characteristics of pedestrians.It was concluded that pedestrians have the following characteristics in stair and escalator area.1)Pedestrians' choice of facilities not only affected by a variety of physical characteristics,but also related to their own time sensitivity.2)During peak hours,pedestrians line up in the escalator area,which formed a phenomenon that team-headed and the tail of the team is arched.3)In dual direction staircase area,pedestrian in the direction of the downstairs are more inclined to actively avoid.(2)According to the selection behavior of pedestrians,optimizing the model which proposed by zhang and Li.Through the combination of qualitative and quantitative methods,analyzing influencing factors of the selection behavior of pedestrians.Based on walking speed,classify pedestrian time sensitivity and introduce time-sensitive variables into existing models to complete parameter calibration,then compared with original model.(3)Optimizing the simulation model which proposed by Ji according to the queuing behavior of pedestrians in stair and escalator area.1)In consideration of the Li model,pedestrian walking process only considers the position benefit.Based on the positional attractive force of the original model,introducing a repulsive force and establish the function according to the relationship between the repulsion force and the queue position.Which made pedestrians' queuing state closer to reality.2)Through the analysis of the pedestrian's field of vision in staircase,the visual factor was introduced into the Karamouzas model to complete the improvement of the existing avoidance force function.3)Using MATLAB to program optimized and original model,Compare the model effect with the actual situation.(4)Using MATLAB software to compile the improved model simulation program.Taking the parallel arrangement of stair and escalator as example,apply the improved simulation model.Simulating pedestrian behavior in stair and escalator area in bidirectional channel.According to the analysis of the pedestrian choice behavior of stair and escalator,queuing behavior and pedestrian's rate in different situations,verified the validity of the model.