An Entry and Exit Model for Mobility-impaired Passengers in Subway Stations
To provide better travel services for mobility-impaired pedestrians,this paper investigates the micro-level travel behaviors of mobility-impaired pedestrians and analyzes the mechanisms of conflict avoidance among pedestrians with different individual attributes.Considering the physiological differences of pedestrians,this paper extends the traditional cellular automaton model field to incorporate with the micro-level travel characteristics of mobility-impaired pedestrians.In addition,improvements are made to the field strength model and model updating rules,resulting in the development of a cellular automaton model that describes the motion of mobility-impaired pedestrians.By conducting on-site experiments with pedestrians moving in opposite directions,the trajectories of both regular pedestrians and mobility-impaired pedestrians are extracted and analyzed to obtain parameters such as their movement speed,angular deviation,and lateral displacement during conflict avoidance.These parameters are then used to calibrate the relevant parameters of the cellular automaton model.The experimental results indicate that mobility-impaired pedestrians have lower mobility and freedom compared to regular pedestrians.During the conflict avoidance process,mobility-impaired pedestrians show significantly smaller angular deviation and displacement than regular pedestrians,mainly by reducing their walking speed to passively avoid conflicts.The simulations yielded errors of 2.74％,3.35％,6.71％and 6.16％for pedestrian speed and lateral offset distances for regular pedestrians,wheelchair pedestrians and pram pedestrians compared to the measured data.Based on the improved model,simulations were conducted to analyze passenger egress scenarios at the platform level of Shanghai Metro's Disney Station.This was conducted to further validate the model's effectiveness and propose an optimization plan for the placement of accessible elevators.The results indicate that the optimization plan effectively mitigates platform pedestrian queue intrusion,enhances pedestrian throughput efficiency,and can provide theoretical support for the planning and design of facilities such as subway accessible elevators.
urban trafficsimulation on mobility-impaired pedestriancellular automaton modelsubway stationavoidance behavior
万方数据
维普
