Research On The Optimization Of Conventional Bus Route Based On Mass Transit Transfer Hub

Although in recent years,our country had made considerable progress in developing city public transportation.It had not changed the fact that urban public transport lagged behind the development of urban economy and society.Railway transit as a new public transport mode allowed residents who use public transport to travel can reach the destination more convenient,faster and more comfortable.Owing to the conditions of rail transit construction limited the coverage of rail transit,conventional bus could fix the defect of railway transit by expanding the scope of rail transit through the service of conventional bus.To improve the operation efficiency and service level of public transport system,the connection between rail transit and bus transit must be tight,and the transfer point of rail transit and bus transit must be arranged reasonably.Conventional bus can provide better service for railway transit.Firstly,with combining domestic and abroad advanced research theory,two parts were described included the optimization of conventional bus line network and the optimization and the adjustment between rail transit and conventional bus.With the results of the present study,some problems in current research field were analyzed,and research idea and technical route of this paper were established.Through comparing these two kinds of public transport modes and their traffic characteristics,the functional orientation of these two modes were analyzed by describing the basic meaning and the function of rail transit and conventional bus.Secondly,aimed at the connections between the rail transit hub and the conventional bus,this paper analyzed the connections from two aspects of the passenger flow and the layout modes.From the aspect of passenger flow,this paper determined the passenger-attracting scope of rail transit hub by analyzing the passenger flow characteristics of rail transit hub,which includes the first passenger flow and the secondary passenger flow attractive scopes.Based on the forecasting methods of rail transport hub passenger flow,the rail transit hub and the conventional bus were made better connections.From the aspect of layout modes,the spatial relationship between rail transit hub and conventional bus were analyzed which determined the principle of rail transit hub and bus transit,and different layout modes were analyzed.Finally,based on the optimization principle of bus route of rail transit,this paper suppose that the passengers in the track line whose travel demands were many-for-one and uniform distribution.Basing on this hypothesis,this paper took into account of the length of the line,the line repeat coefficient and model reference value,and so on as the constraints.And the mathematical models with the time cost of bus travel as the optimization goal were built,and also the mathematical analysis method was used to optimize conventional bus lines.From the existing conventional bus lines and new conventional bus lines,the optimization of conventional bus line design was discussed.At last,the Glowworm Swarm Optimization was used to solve the optimization problem of rail feeder bus routes.In this paper,through optimizing bus route of rail transit hub,not only the pressure of rail transportation hub passenger could be eased in the peak period,also the resources of public traffic could be allocated reasonably,and the passengers who used the public transport travelled more comfortable,convenient and efficient.At the same time,using GSO solve the optimization model of bus route which enriched the algorithm research of network optimization problem about bus lines.