Passenger Alighting And Boarding Model And Simulation Based On Cellular Automata

With the advent of urban rail transit network operation era,subway traffic grows quickly,traffic congestion becomes serious,which not only reduces the network operation efficiency,but also brings a series of security issues.Improving the subway train interval traffic capacity and making the passenger travel safely and efficiently become hotspot at home and abroad.Boarding and alighting efficiency is one of key factors impacting the train interval traffic capacity,through the field research of passenger flow and boarding and alighting state of related station of Beijing subway.Based on actual research data,analyzing the boarding and alighting passenger behavior characteristics from three aspects:individual characteristics,distribution characteristics and movement characteristics;based on boarding and alighting passenger behavior characteristics,establishing the CA evolution model of passenger boarding and alighting movement,introducing the direction parameter,sensing parameter,proxemics parameter,competition parameter which used to describe the act of choosing and avoiding.By the study of the train structure and the number and distribution of passengers,analyzing the relationships between boarding/alighting efficiency and the factors(door width,vertical handrail distribution,passenger density,passenger distribution),and verifying by experiments.The main work is as follows:(1)Analyzing of boarding and alighting characteristic and its influence factorsCombine with the field research and existing research results at home and abroad,analyzing passenger behavior characteristics from three aspects:individual characteristics,distribution characteristics and movement characteristics.The analysis found that choice behavior of passenger is related to the attraction degree of different location of the station,individual competition ability,distance between passengers,congestion status.Analyzing boarding and alighting influence factors from three aspects:internal structure,platform layout,number and distribution of passenger.The analysis found that the internal structure(door width,vertical handrail distribution),platform layout(universal sign,diversion guardrail),passengers factors(number and distribution)can influence boarding and alighting efficiency to some extent.(2)Establishing CA evolution model of boarding and alighting movementBased on the boarding and alighting characteristics,introducing direction parameter,sensing parameter,proxemics parameter,competition parameter,which describe location attraction degree,fell crowd degree,space requirements,competitive capacity.Establishing CA evolution model of boarding and alighting,and correcting the model parameters combine with field research.(3)Simulation of boarding and alighting influence factors and experimental verification.Based on the CA evolution model of boarding and alighting,researching boarding and alighting efficiency from two aspects:train internal structure,number and distribution of passengers.Combine with simulation result,validating by physical experiment.The simulations reveal that door width/vertical handrail distribution/passenger density/passenger distribution have a significant impact on the efficiency of boarding and alighting.