Research On Optimization Of Public Transit Network Based On Urban Rail Transit

Urban rail transit is currently at a rapid development stage,and its initial planning and construction are often along the bus passenger flow corridor,which will form a relationship of competition and cooperation with regular public transport.For the entire public transport system,some passengers will experience shifts in the mode of travel.This will require the adjustment of conventional bus routes to complement each other's advantages,reduce competition and expand cooperation.Based on the rail transit network,the study of the optimization of the normal public transit network and the construction of a sustainable public transport passenger transport system will have long-term and far-reaching significance for the ultimate realization of the objectives of“three wins”among conventional public transport,rail transit and passengers..This paper studies the basic theory of the coordinated development of urban rail transit and ground transportation.The functions,advantages and disadvantages of urban rail transit,ground bus,and transit bus were compared and analyzed.The function of bus line was divided into layers and the relations between levels were located.Based on rail transit research regular bus line adjustments.To study the principles and objectives of the adjustment of the bus line network,the narratives will be developed from three aspects:the layout and function of the public transport network,the convergence and convergence of the two networks,and the adjustment and addition of the conventional bus line network;and the study of the scope of the rail transit to attract passengers;The adjustment strategy of bus lines;study the sequence and principles of line adjustment.Based on the study of urban rail transit,new bus routes for picking up were added.The road network screening standards for supporting bus lines are studied from the aspects of road grades,road conditions,etc.;according to whether or not regular bus stops are linked to rail transit stations,the sites are divided into four categories to determine the candidate site's determination;Rail transit stations set up heuristic search steps,established a multi-objective line network optimization model,explored candidate transit bus routes;the solution method used improved genetic algorithms;and applied the above research results to conduct case studies.