Research On Layout Method Of Feeder Microcirculation Bus Lines For Urban Rail Transit

With the development of economy,traffic jam,air pollution and other" city disease" have plagued many cities in our country,so the development of public transport is essential.Despite the gradual improvement of the public transport network such as rail transit and BRT,there are still some areas in the city which can not be covered.In this context,microcirculation bus which aims to serve the residents within the region travel,share the trunk traffic pressure,and solve the "last mile" trip problem comes into being and mature.And "take the subway to the station,go home by bus"has become the new direction of public transport development.Based on this,the layout method of feeder microcirculation bus lines in areas with low public transport accessibility is studied comprehensively in this paper.The main work could be summarized as follows:(1)The concept of microcirculation bus is clarified,and its uniqueness is analyzed.First,the concept of microcirculation bus is elaborated,and the classification and characteristics of microcirculation bus is summarized.Then,the microcirculation bus is compared with other public transportation modes,and the microcirculation bus lines mode is analyzed.In addition,the line connection form of microcirculation bus and rail transit is summarized.(2)The basic characteristics of microcirculation bus lines and passenger flow are studied in this paper respectively.First of all the basic characteristics of microcirculation bus lines are analyzed.In order to know passenger flow law,the passenger flow data are analyzed from four aspects:passenger flow characteristics,purpose of passenger flow,time distribution of passenger flow and spatial distribution of passenger flow.Then,the relationship between the characteristics of microcirculation lines and its passenger flow are analyzed.So the layout line type of the paper is determined in this chapter.(3)The layout method of feeder microcirculation bus lines is put forward in this chapter.Firstly,the influencing factors and principles of the layout of feeder microcirculation bus lines are analyzed,and the line layout process is summarized.Then,the determining method of the line layout area based on area public transport accessibility and the selecting method of the bus station are studied.(4)The layout model of feeder microcirculation bus line is constructed.Based on definite layout area,the layout model of the microcirculation bus lines in the layout process is studied.The characteristics of domestic residential layout and community residents travel characteristics are analyzed firstly.Then based on the passenger demand,considering the constraint of the length of the line,the capacity of the vehicle and the travel time,a multi-objective programming model with the objectives of maximizing the service passenger volume and minimizing the line operating cost is constructed.To solve the problem,the microevolution algorithm and CPLEX are used.Finally,an example is given to demonstrate the effectiveness of the model and microevolution algorithm.(5)Shangdi area in Haidian District of Beijing taken as the background,a real example is used to verify the practical value and significance of the study.