The Optimized Design Of County-rural Bus Line Network Based On The Node Multi-dimensional Analysis

The development speed of urban-rural integration in China is accelerating,which puts forward higher standards for the transportation between urban and rural areas.As an important part of urban-rural transportation,County-rural bus,it is a project that will satisfy the daily travel of rural residents,and the public welfare of the people.But for the time being,the development of County-rural bus system has been delayed,unable to satisfy the needs of the people of the village,and the problem is that not properly set up.Therefore,the insufficiency existed in transit network is analyzed and some improved design method of County-rural bus line network are proposed by this paper.The main research process of this paper is as follows:first,through the operational features,node features,and the characteristics of passenger flow in three aspects of County-rural transit to understand;than,a basic design thinking on County-rural bus line network is presented.the reasonable range of line network layout is determined by large data software,makes the node multi-dimensional analysis in reasonable range,connects different types of nodes,county-county level node line,county-village level node line and village-village level node line has been constructed,and then superimpose three layers of lines to form the final network plan;Furthermore,three objective functions are established based on the development principles of bus in county-rural:the maximum direct passenger flow,the shortest travel distance and the optimal operation conditions of bus routes,The final optimization model is obtained by three aspects and the optimization model is solved by genetic algorithm.Finally,taking bus network planning of Jiangshe town village of Xiangtan city as an example,the resident travel data is obtained through investigation and analysis,and the scope,nodes and routes involved in planning are studied to verify the feasibility of the model and method.A new theory and guiding method for the optimization design of bus network in villages is provided by the research proeess of this paper,which has a positive effect on improving the public transport service level and giving priority to the development of County-rural bus.