Coordination Of Urban Rail Transit And Conventional Public Transport Operation And Optimization Research

With the rapid development of national economy,a series of traffic problems are increasingly frequent.In the past,various urban transportation modes can no longer meet the needs of residents’ travel and urban development.As is known to all,vigorously developing public transportation is the main way to solve the urban traffic problems.How to better deal with the connection between the two,and then reduce the number and time of transfer between various modes of transportation has become the current research hotspot and focus.In particular,the coordination and connection between urban rail transit and regular public transport is a problem.Therefore,the two must be organically combined to form a coordinated public transport system,so as to make the operation efficiency and service level of urban public transport higher and better.This paper mainly studies the layout optimization of the regular bus stations around the existing rail transit stations,as well as the operation coordination and optimization between the rail transit and the regular bus stations.The main research contents and achievements of this paper are as follows:(1)Firstly,the theoretical basis of urban rail transit and conventional bus is analyzed.Secondly,the traffic characteristics and function positioning of the two are compared.Finally,the cooperation and competition between urban rail transit and conventional bus are discussed.(2)establish a site layout optimization model of urban rail transit and conventional public traffic,for urban residents to take public transport with target of minimizing the total cost of the average time,in a station spacing and logic as constraint conditions,is difficult to change,the premise of considering rail transit site by adjusting the bus station location optimization,cohesion in urban rail transit and conventional public traffic layout optimization.(3)On the basis of the above,further study on the collaborative optimization of rail transit and regular bus operation.In the process of urban residents taking rail transit and regular bus,through optimizing the operation organization of rail transit and regular bus,to realize the optimization model of the two cooperative operation.After the establishment of the model,a hybrid genetic algorithm is introduced,and Powell algorithm is introduced into the process of genetic algorithm.Based on the genetic algorithm,a solution algorithm of the optimization model is designed.(4)Take the local transfer network of Dalian Metro Line 1 and its surrounding four regular bus lines as an example.A case study of local collaborative optimization of urban public transportation was carried out.By comparing the objective function values before and after the analysis,it can be seen that through the optimization and adjustment of station layout,waiting time,bus time and transfer time have been reduced to varying degrees.Through the adjustment,the total travel time has decreased from 1448.97 seconds per capita to 1401.01 seconds.Through comprehensive optimization and encryption of the departure frequency of subway and bus,the waiting time and transfer time can be greatly reduced.According to the weight value of the objective function designed in this paper,the overall optimization efficiency of the objective function can reach 31.71%.It is basically believed that the model and solving algorithm can achieve the desired effect.