Shenzhen City Subway During The Construction Of The Traffic Relief

In order to solve the traffic problem of metropolitan cities, subway is required to construct. The large-scale subway project and complex engineering environment, together with the development of other public infrastructures and properties of the project along the subway, will increase the worsening of urban traffic condition. The subway construction experiences of New York, Paris, London, Beijing and Shanghai have frequently proved that subway construction period is the dark period of urban traffic. Along with more and more metropolitan cities constructing or planning to construct subway, it is an urgent need to solve the problem that how to carry through urban traffic organization reasonably, to decrease the impact of subway construction to highway capacity and get through the dark period of urban traffic.Aiming at the problem of traffic organization during subway construction, this paper first sets up a scientific and systematic solution framework:(1) It confirms the basic steps of traffic organization study.(2) It utilizes the mature medium traffic simulation model to forecast the future traffic. Meanwhile, it constitutes the general evaluation system of traffic organization.(3) Based on the future traffic forecast, it analyzes the impact of subway construction to urban traffic, designs and optimizes the solutions of traffic organization, and evaluates the solutions with the evaluation system of traffic organization.(4) It presents the effect evaluation method of the solutions of traffic organization, so it can adjust the solutions of traffic organization iteratively based on the field survey data.Based on this solution framework and extensive survey of exsiting traffic condition in Shenzhen City, the paper presents the special example of traffic organization during Phase One subway construction in Shenzhen City. It analyzes the traffic impact, designs and optimizes the solutions of traffic organization, evaluates the effect of the solutions of traffic organization and gains the favorable application effect. The solution framework proposed in this paper establishes sound foundation for other metropolitan cities in China to deal with traffic organization problem during railway transportation construction.