Train Schedule Optimization Of Intercity Railway Considering Air-Rail Connection

With the continuous improvement of my country’s economic level,passengers have not only put forward higher requirements for the supply of transportation products,but also put forward higher standards for their service quality.At the same time,the rapid development of railway and civil aviation and the continuous launch of passenger air-rail combined transport products by the passenger transport sector have promoted the development of passenger air-rail combined transport in my country.In the medium and long-distance passenger transportation,the passenger air-rail combined transportation effectively combines the advantages of the two transportation modes of air and railway.With the advantages of large transportation volume and strong accessibility,railways are used as "ground feeder flights" of aviation,which expands the radiation scope of air transportation;aviation attracts medium and long-distance passengers for railways with the characteristics of high speed and long transportation distance,and also strengthens railways.Transportation accessibility.However,at present,there is a common problem of poor connectivity between the two modes of transportation in the process of passenger air-rail combined transportation in my country.How to optimize the railway train schedule connecting the airport to improve the connectivity of passenger air-rail combined transportation has become a problem worthy of study.The main research contents of this paper are as follows:(1)Sort out the relevant theories of passenger air-rail intermodal transportation,analyze the passenger air-rail intermodal transfer connection mode and the development status of domestic and foreign passenger air-rail intermodal transfer connection,and summarize the problems existing in the passenger air-rail intermodal transfer connection process in my country.(2)To sort out the relevant theories such as the intercity railway train schedule,train operation diagram,and train operation plan,especially summarize the content and compilation principles of the intercity train operation plan,and select the trains in the intercity railway train operation plan.The timetable is the research object of this paper.(3)Determine the optimization strategy from the perspective of improving the service quality of passenger air-rail intermodal transportation and the compilation of intercity railway train timetables.Considering the constraints of train safety,travel time,stops,operation time,and overruns,an intercity railway train schedule optimization model considering air-rail intermodal connections is established to maximize the number of passenger air-rail intermodal connections.(4)Design cases to verify the validity and feasibility of the model;on this basis,considering the uncertain factors of flight delays,design an optimization scenario of intercity railway train schedules considering flight delays in air-rail combined transportation.The results show that the train schedule obtained by the case optimization significantly increases the number of flights connected by railway trains in the process of passenger air-rail intermodal transportation;at the same time,through the sensitivity analysis of the influence of parameter changes on the case results,it provides a certain value for the development of air-rail intermodal transportation and improving service quality.theoretical reference.