Research On Metropolitan Rapid Rail Transit Line Selection

In 2006,China proposed the spatial strategy of urban agglomerations and established the three metropolitan areas of Beijing-Tianjin-Hebei,Yangtze River Delta and Pearl River Delta.The rapid development of the metropolitan area has promoted the construction of small-scale urban agglomerations based on counties.In the situation where the traditional transportation methods are difficult to meet the demand for long-distance connection between the central city of a metropolitan area and the towns of the group,the metropolitan rapid rail transit has become an important way for the cluster cities to quickly connect and integrate into the central city of the metropolitan area.At present,China is actively carrying out the construction of the metropolitan rapid rail transit.However,the rapid development of the metropolitan rapid rail transit planning and development time is short,and a unified construction code has not been formed yet.Therefore,it is necessary to select the general method for the key issues of the metropolitan rapid rail transit planning and construction technology route.Carry out systematic research,and provide reference for the establishment of China's metropolitan rapid rail transit construction norms.The research work of this paper is as follows:Based on national standards,the concept of easy-to-be-confused is discriminated,the concept attributes of the metropolitan rapid rail transit are defined,and the conceptual understanding of the selection of the metropolitan rapid rail transit is proposed to clarify the main body of the study.In addition,combined with the research status of the metropolitan rapid rail transit line selection,the basic ideas and methods of the existing research are described,and the problems existing in the selection of the metropolitan rapid rail transit are proposed.Because the traffic network is a typical network composed of points and edges,this paper focuses on traffic topology modeling methods.First,the basic concepts of complex network systems are introduced,and the basic concepts of the theory are described.Second,the introduction of complex network analysis indicators and basic complex network model,and make specific instructions.At the same time,two kinds of transportation network topology modeling methods are introduced,and the application of the two methods is illustrated.Finally,the scale-free network is taken as the basic framework of the modeling,and the analysis indicators are used as the basis for the problem research.The topological modeling method for the line selection of the metropolitan rapid rail transit is introduced and described,and the specific steps of the modeling method are described.Taking Ningbo-Xiangshan City Rapid Rail Transit as an example,according to the topological modeling method of municipal metropolitan rapid rail transit line selection,the topological network modeling of existing transportation network,west-line program transportation network,and east-line program transportation network is performed,and each network is calculated.The analysis indicators of each node in the analysis of the indicators by comparing the status of changes in various scenarios,analysis of different programs on the impact of the transport network,and as a basis for the Ningbo to Xiangshan City rapid rail transit construction options.