Research On Responsive Bus Connection For Landside Network Underdeveloped Airport

With the rapid development of civil aviation transportation,the number of airports is increasing.In this case,there are some shortcomings in landside transport planning,such as lack of systematicness,which will seriously affect the speediness of civil aviation transport,reduce the scope of its services,and reduce passenger travel efficiency.To solve this problem,this theme studies a demand-responsive bus operation mode,airport-responsive bus,focusing on three aspects:flexible station planning,pre-scheduling of the responsive bus and real-time path planning.By summarizing the relevant research results at home and abroad,this theme establishes the relevant model of airport responsive public transport,and combines the actual operating characteristics of public transport companies,carrying out the following research:Firstly,the basic concepts and characteristics of the responsive bus are introduced.On this basis,the classification of airport responsive bus,customization process and operation mode are studied.It also introduces the basic theory of airport passenger transport connection,which provides theoretical and practical support for later writing.Secondly,according to the characteristics of the flexible bus line and flexible bus stop,a mathematical model of the flexible bus stop is established and solved by the simulated annealing algorithm.To reduce the time complexity,the reliability of the road network is transformed into the impedance of the road network through mathematical transformation.According to the actual operation,the traditional optimal model of the system is improved,thus the pre-scheduling problem is transformed into the passenger flow assignment problem.According to the characteristics of dynamic change of road network information,the incremental allocation method is used to complete passenger flow distribution,and the number of vehicles to be used is determined according to the passenger flow distribution.Thirdly,after completing the pre-scheduling of the responsive bus,a real-time path planning model is established to meet the real-time demand on the post-departure network.Firstly,the mathematical description method of the road network and path optimization is introduced.Secondly,a multi-objective optimization model is established to maximize demand,minimize operating costs,minimize passenger consumption time and minimize time window deviation,and to constrain vehicle capacity,quality of service(number of rejected orders)and number of buses.Thirdly,aiming at the situation that genetic algorithm is easy to premature and fall into local optimum when searching globally,the crossover and mutation process of genetic algorithm is added by the Metropolis criterion of simulated annealing algorithm,so that the defect that only local optimum solution can be obtained can be avoided by the jump probability of simulated annealing algorithm.Finally,taking Shijiazhuang Zhengding International Airport as an example,starting from the characteristics of the airport passenger flow,combining with the characteristics of the airport connecting system,the paper analyses the influence of different factors on the operation from the aspects of passenger flow composition and passenger demand.The above theory is used to optimize bus route planning,pre-scheduling and real-time route,which proves the validity and practicability of the theory.