Research On Mechanism And Simulation Model Of Pedestrians And Vehicles Interference In Comprehensive Passenger Hub

The comprehensive passenger transport hub integrates various modes of transportation,and the reasonable arrangement of various transportation modes and facilities directly affects the hub gathering and evacuation efficiency.In all kinds of transportation modes,correctly understanding the relationship between pedestrian flow and vehicle flow and effectively dealing with interference will have important theoretical and practical significance for improving hub gathering and evacuation efficiency.However,at present,there is still a lack of systematic theory of the mechanism of interference between pedestrians and vehicles in the hub area,and there is a lack of relevant assessment methods and tools for the configuration of pedestrian-vehicle interaction facilities.In response to this problem,this paper studies the mechanism of pedestrian-vehicle interference in comprehensive passenger hub,and uses micro-simulation methods to evaluate the characteristics of pedestrians and vehicles in different areas,in order to provide theoretical reference and method support for the design of comprehensive passenger hub.The paper first analyzes the pedestrian and vehicle interference characteristics of the comprehensive passenger hub,determines the boundary of the hub area according to the pedestrian's walking time,and divides the hub area into the radiation area and the core area.The behavior of pedestrians and vehicles will be affected by the environment.The pedestrian and vehicle interference behaviors in the radiation area and the core area will be analyzed respectively,which will lay the foundation for the construction of pedestrian and vehicle interference models.Secondly,the pedestrian-vehicle interference model in the radiation area is constructed.There are two types of pedestrian-vehicle interference in the hub radiation area,which are the interference of one-way vehicles and pedestrians,and the interference of two-way vehicles and pedestrians.In the one-way vehicle and pedestrian interference model,the yielding behavior of the vehicle is constructed as a functional relationship with the pedestrians in the waiting area,and is fitted by data.The two-way vehicle and pedestrian interference model includes pedestrian crossing decision,conflict elimination,vehicle deceleration,yielding behavior,and pedestrian position interchange rules are improved to eliminate the unreasonable phenomenon of pedestrian position interchange entering conflict area.Then,the pedestrian-vehicle interference model in the core area of the hub is constructed.The interference of pedestrians and vehicles in the core area of the hub mainly occurs in the drop-off area.The interference of vehicles is not only between vehicles,but also by pedestrians.Pedestrians are subject to vehicle interference during the movement along the motorway and through the crosswalk,and pedestrians still have a change in direction during the movement.During the observation of the core area of Beijingxi Railway Station,the phenomenon of illegal parking of vehicles was also found,and this behavior was characterized by random probability in the model.Finally,taking Beijingxi Railway Station as an example,the model validity is verified by simulation.After the parameters are calibrated,the simulated pedestrian delay time or the traffic flow leaving the system is compared with the observed data to verify the validity of the model.And further analyze the evolution of pedestrian and vehicle interference:The distribution of vehicles and pedestrians leaving will be affected by the interference of pedestrians and vehicles;the delay is also affected by the arrival rate of vehicles and pedestrians;The interference rate of r vehicles and pedestrians will increase as the arrival rate of the other party increases;The delay of the vehicle is more obviously affected by the pedestrians in the immediate vicinity,and the influence of the pedestrians in the lanes on the delay of the vehicle increases with the increase of the arrival rate of the pedestrians in the immediate vicinity;The traffic capacity of the vehicle lane inside the core area is smaller than that of the outer lane,and the delay is greater than that of the outer lane.This paper expands the cellular automaton model of pedestrian and vehicle interference.The simulation model can provide core support for the development of simulation evaluation tools in comprehensive passenger hub.