Optimization And Simulation Research On The Entry Flow Line Of Large Railway Passenger Station

China’s economy continues to grow leaps and bounds,and frequent circulation and exchanges in various regions have greatly stimulated the demand for transportation.With the promotion of modern railways marked by railway passenger dedicated lines and high-speed railways,a number of matching modern railway passenger stations with advanced facilities,powerful functions and first-class services have also been completed one after another.As important nodes of traffic flow,logistics and passenger flow distribution,large railway passenger station also undertakes multiple functions,such as passenger transportation,distribution transit,business and leisure and so on,it is not only an integrated and diversified core hub system that synthesizes multiple transportation modes,but also a complex three-dimensional queuing system which integrates three-dimensionality,comprehensiveness,and guidance quality in one,the passenger flow lines in the station show various characteristics such as distribution,multidirectivity,and mixture accordingly.Therefore,based on the "people-oriented" concept,how to put forward a scientific and reasonable optimization scheme to make the flow lines in the station smoother and more efficient has important practical significance for improving the operating efficiency and service quality of the passenger station system,It is also an important issue worth discussion in the new era.Since many dynamic factors in large railway passenger stations will have certain effects on passenger behaviors,the traditional theoretical evaluation method of simply using formulas to obtain each service index of passenger service equipment will affect the accuracy of the results.This paper uses computer simulation technology to obtain relevant data indicators,divide the service capacity level of the designated area in the station,and propose the optimization of the passenger flow line organization and the configuration of passenger transport equipment from the two aspects of "man" and "object" respectively,so as to realize the overall optimization of passenger station entry flow line.This method not only simplifies the evaluation and optimization process,but also makes the results more accurate and universal.The main work of this paper is as follows:First analyze the characteristics and main components of large railway passenger stations,and then introduce the passenger transportation facilities and equipment in the station in two aspects in detail,and match them with the behaviors of passengers due to receiving services or handling relevant procedures,finally,an "entry area" is defined,and the service level of the "entry area" is classified from two perspectives of broad time and space cost;Carry out theoretical research on the definition,main characteristics and design principles of the passenger flow line organization of large railway passenger stations,and through the analysis of the inbound,outbound and transfer flow lines of passenger flow to study the specificprocess of passenger flow line organization in the station,propose streamline organization optimization plan from the two angles of streamline organization intersection and passenger transport facilities and equipment;Construct a second-order queuing network model based on M / M / C,M / D / C,implant an example,and use theoretical calculations to find the bottleneck of the queuing service system in the arrival area of large railway passenger stations and determine the criticality of different passenger transportation equipment,introduce the function and application field of Anylogic simulation platform and the action principle of the social force model on which the software is based,and build the specific process of this simulation experiment based on the passenger arrival mode,inbound flow line and process,and propose the specific simulation ideas in this paper;Taking Chongqing West Railway Station as the research object for example analysis,combining the second-order queuing network model and the pedestrian-based micro-simulation based on Anylogic to optimize the passenger inbound flow line at the platform and departure layers,the former draws up three optimization schemes and theoretically calculates the average waiting time required for each scheme,it is concluded that the bottleneck of the queuing network is the security inspection system,it is determined that the criticality of different equipment for shortening the passenger arrival time,from large to small,in order of security check equipment,manual service windows,and automatic ticket machines,the latter is based on Anylogic that dynamically simulates the entire process of passengers from purchasing / ticketing to entering the central waiting area,while verifying with the former,verify the conclusions obtained by the previous theoretical calculations,and obtain relevant service data indicators to determine whether the overall passenger service level in the station at peak times and periods of high passenger flow meets actual passenger demand.According to the current service level in the station,the streamline optimization measures are proposed from two perspectives of passenger flow line organization and passenger transport facilities and equipment configuration,explore the better configuration schemes for passenger service equipment such as manual service windows,automatic ticket machines and security check equipment in the station in operation management,and simulate again after optimization to verify whether the proposed optimization measures are feasible and effective.