Analysis Of City Public Transportation Network Accessibility And Its Influencing Factors In Nanchang

The development of the city makes the urban subway enter the fast development stage.The construction and improvement of urban subway can compress the city in space and provide convenience for residents to travel,but at the same time,it also has some challenges in understanding the urban structure.Facing the development of subway traffic,we have to think about some problems: how to connect the subway transportation and the city existing public transportation network reasonably,to complement each other;how to connect the city to the others,shorten space distance between cities and promote the development of regions along the subway to obtain maximum benefit utilizing subway network;how to treat city structure correctly after subway traffic joined,how to analyze time-space evolution of the city pattern,and how to predict the future city development pattern reasonably.To solve these problems,we need to master certain knowledge,analyze various function and structure of urban public transportation system applying correlative technique and methods,and construct traffic network model for an abstract description of traffic network,so that we can analyze and study traffic system as a whole.Although there are lots of methods and empirical studies about the accessibility analysis of city public traffic network system,most of them are based on a kind of public traffic network,such as bus network,subway network,city road network,and the research on the accessibility of city comprehensive transportation system is relatively less.This paper not only analyzes the city bus network,but also focuses on the city subway network,evaluates urban public transport network.Meanwhile we evaluates the improvement situation of urban subway traffic accessibility to the public transportation network by time-distance method and space syntax method,and analyze the internal structure of the city bus network.This thesis evaluates Nanchang city public transportation network from multiple perspectives by a variety of methods,and includes the following aspects: firstly,puts forward the research background and research significance,determines the content according to the research background and significance,then gives the research framework,and introduces the accessibility research methods and measurement index,and after that puts forward ideas and goals of this article.It also summarizes the current research status and some research results of urban subway network,which are part theoretical basis of this paper,it includes the research on spatio-temporal evolution of the urban subway,the analysis of the accessibility of the subway in different ways,the evaluation of the urban subway based on the complex network model and so on.This article analyzes the accessibility of the subway by distance method and spatial syntactic parsing respectively.Different accessibility measurement index reflect the pattern of accessibility of urban public traffic and the influence of subway on urban public transport from different concepts and angles.In the discussion of the internal structure of the urban public transport network,we apply the Space L network and Space P network in the complex network model to analyze the characteristics of the traffic network organization.