| Along with the rapid development of social economy and the accelerating urbanization and motorization process, much promotion track site ushered in a greater number of users, but the coverage, capacity, service is very limited. In the past, the study of the efficiency of the railway station will start from the operation of the station itself, and neglect the driving effect of the surrounding built environment to the site use efficiency.. And accessibility as a kind of widely used in the evaluation of efficiency of infrastructure and important influence by network layout of cities, urban land use, urban public transport system construction of the urban environment. Whether the user can quickly, conveniently and effectively reach the track site is an important guarantee for the quality of life and the living standards of the residents in the area.. Through the empirical analysis of track site attractive and its surrounding features of urban space is closely related to attach importance to urban spatial form and also improve the site use rate is an important guarantee. So, combining the environmental features of the site around the environment to make the accessibility optimization, for the city and rail transportation coordination development plays an important role.ith the rapid development of social economy, urbanization and motorization process, traditional ushered in a larger number of users on the rail station, has gradually can not meet the residents growing up to the travel requirements of high efficiency and high. Accessibility as a means of evaluation, all have important influence on the problem of city network layout, city land use, the city public transportation system construction. Residents can enjoy easy access to rail transport services, today’s society is a measure of a city dweller standard of living, the modernization level of an important indicator. Support for large city track traffic development in addition to the management of its own operating system, more needs to realize the coordinated development between the city space form and rail transportation, in order to give full play to the positive role of rail transit in city development, at the same time as the rail transit passenger flow support. Therefore, the accessibility service efficiency index as one of the most important rail stations, for the coordinated development of city and rail transportation plays a role can not be ignored.This paper summarizes the reachability theory and related research.. Based on the review of the reachability method, the spatial accessibility of GIS is chosen as the evaluation method.. This method can not only provide reference for the same type of research, but also optimize the relevant optimization measures through the refinement of spatial features.. The next part is according to the accessibility factors constructed track site accessibility evaluation model, and spatial accessibility evaluation of Chongqing Nan’an area using the comparison of efficiency of rail transit stations, from spending time, service area, service population ratio and other indicators to make the conclusion of the difference of six site accessibility. Accessibility gap phenomenon based on the above, the use of analytic hierarchy process(AHP) to accessibility factors of cluster analysis, scientific summary of the three elements of accessibility gap caused by: built environment factors, site factor itself, residents characteristics elements; and research method of the were comparative analysis, fully demonstrated the specific conditions cause accessibility gap..Finally according to the summary on the south bank area track site accessibility factors is proposed based on improving the accessibility of the four optimization strategy and its content also covers several aspects involved in the evaluation and research. Take this research hope to renew people has built a track site to enhance the efficiency of the rethink the position, and in a certain extent for reasonable planning of the urban environment to make the contribution, Chongqing rail transit stations and urban environment of coordinated development to provide the reference. |
