Optimization Of Train Stop Scheme Considering Passenger Attraction Effect At Intercity Railway Corridor

At present,the demand for intercity passenger transportation is increasing,but some domestic intercity railways have low attendance levels.In response to this problem,there are mainly two ways to improve passenger traffic and adopt small groups.A reasonable train stop plan can shorten the travel time of most passengers under a certain supply level,reduce the overall travel utility of passengers,and increase the passenger flow attracted by intercity railways in the various transportation modes of intercity corridors.Multi-group operation can directly increase train occupancy rate.The specific research content is as follows:(1)Summarize and analyze the public transportation passenger transportation situation and the intercity train stop plan of the typical intercity corridors in China.First,statistical analysis of the fare rate,average departure interval,average travel speed,and passenger volume of the main passenger transport modes in the intercity corridor.Secondly,it counts the service frequency of intercity railway trains in various periods,trains,stations,and various ODs,and analyzes the relationship between the number of stops and travel speed.Through investigation and analysis,it can be seen that there is a large room for improvement in the passenger flow shared by some existing intercity railways in the passage.It can be considered to reduce the travel time of more passengers by changing the stop plan and attract more passenger flow for the intercity railway.(2)Consider the travel cost of passengers from the perspective of the travel time,cost and passenger attributes.Analyze the impact of stop plan on travel time.Construct a travel utility function and use the Logit model to divide the transportation mode between each pair of OD nodes.The design includes an example of an intercity passage including intercity railways,general-speed railways,intercity buses,and intercity buses to analyze the influence of the stop plan on the passenger flow attraction effect of the intercity railway.The results of calculation examples show that appropriately reducing the number of stops at low-level stations can attract more passenger flow.There is a certain game relationship between the running time saved by sacrificing the number of stops to achieve the speed-up effect and increasing the waiting time of the reduced number of stops.By changing the stop plan,the average travel time of passengers can be reduced as much as possible,the overall travel utility can be reduced,and more passenger flow can be attracted.(3)Determine the area of the intercity passage with the radius of attraction,and randomly generate the starting and ending points of passengers.Considering the constraints of passenger flow,occupancy rate,service frequency,number of stops,departure and arrival,etc.,an optimization model of the stop plan with the goal of maximizing the passenger turnover of the intercity railway is constructed.Aiming at the problem of excess transportation capacity,a marshalling optimization model with the goal of maximizing the average passenger seat utilization rate of trains(that is,the number of passenger kilometers completed per passenger-kilometre)is maximized.Solve by genetic algorithm to determine the stop order and load distribution of each train.(4)Case analysis shows that,compared with the initial stop plan,the optimized plan has an increase in passenger volume of intercity railway by about 9.470%,an increase in passenger turnover by about 8.99%,and an average travel time of all passengers by about 4 minutes.The passenger flow-stop matching degree of all stations under the optimization plan(That is,the sum of the squares of the difference between the proportion of passenger flow and the proportion of stops at each station)has been optimized by 41.642%.After optimizing the optimal stop plan,the passenger seat utilization rate increased by 15.477%.The applicability of the model was verified through the four spatial distribution types of balanced,gradual,stepped,and intermediate inter-city corridors,and compared with the initial stop plan to optimize the passenger flow,turnover,and passenger flow-stop matching of the four.The degree and guest utilization have been optimized.