Research On Time Collaborative Optimization Of Air Rail Integration

High speed railway and civil aviation are both important parts of the comprehensive transportation system.They have great cooperation potential in practical needs,enterprise development,social benefits,energy saving and environmentally friendly.So all countries actively promote the construction of air rail intermodal infrastructure.However,there is a lack of collaborative organization in operation and management,especially in timetable formulation,which leads to low efficiency of air rail intermodal passenger transfer The low attraction of transport products restricts the development of air rail combined transport.It is of great significance for promoting the development of air rail integration to carry out the research on Collaborative Optimization of high-speed rail train and flight schedule and systematically coordinate the schedule of high-speed rail and civil aviation.This paper first combs the relevant research results of domestic and foreign aviation and high-speed rail cooperation,puts forward the research ideas and framework,and defines the cooperation mode of "two pole through" and "zero meter branch line".Secondly,it describes the process and basic model of air rail combined transport,analyzes the principles,models and specific methods of flight and train schedule adjustment for air rail combined transport,so as to lay a foundation for subsequent study on time collaborative optimization of air rail integration.Thirdly,for the "two pole through" mode,considering the time coordination mechanism of aviation and high-speed rail,a double objective time coordination optimization model is constructed to adjust the train timetable,and the tolerant hierarchical sequence method is selected to solve the problem according to the characteristics of the model.Fourthly,considering the characteristics of train and flight schedule resources,a timetable optimization model is constructed to coordinate the schedule of aviation and high-speed rail.Finally,the effectiveness of the model and algorithm is verified by Taking Shijiazhuang Zhengding airport as an example.The empirical results show that after the time collaborative optimization of the two pole through mode,the number of air rail connection increases by 97 times,an increase of 17.7%.The coordinated arrangement of flights and train schedules for zero meter feeder line mode can further increase the number of air rail connection by 34.5%,and will not have a great impact on the existing trains and flight schedules.The sensitivity analysis results show that when adjusting the train and flight schedule for air rail intermodal transport,on the basis of meeting the passenger transfer demand,appropriately increasing the transfer time window of transit passengers and the adjustable time window of train arrival and departure time can effectively improve the air rail connection times and promote the improvement of air rail integration level.