The Research Of Key Technologies Of Traffic Management During The Construction Of Urban Subway

Urban transport problems have become more prominent, to travel with a lot of people inconvenience, urban Subway as a large capacity, high efficiency, independent of the operating mode, off-road resources, to facilitate fast and so many advantages into all major cities is the first choice to solve the traffic problem. However, the vast scale of Subway construction, a long construction period, affected a wide area. Thus, subway construction will make the city traffic even more unbearable. How to impact be reduced to the minimum problem of traffic organization during the construction is important. This paper is focusing on the projected OD matrix and flow distribution in impedance function.Typically, the traditional OD Matrix Estimation has been made under the Traffic Section to project OD matrix, application of OD Matrix Estimation of gravity model approach, there are existing traffic OD Matrix Estimation methods. The rail construction is the site surrounding areas in terms of traffic organization of the program under construction Wei Dang, determine the width of the road reserve, developed around the intersection of organizational forms, which are sites around the region of OD Matrix Estimation.Traffic distribution is the most important development of the traffic based organization programs, and the impedance function in the traffic distribution process directly affects the path selection and traffic distribution, and its direct impact on the scientific selection of the results of the traffic distribution, influence the final design of traffic organization effect, which mainly includes three parts: the road travel time, the node delays and travel expenses. On the trip from the travel needs of those who proceed without considering the city's toll in the presence of, for different road conditions, traffic between different factors that affect road construction impedance function in this basis, the import Road intersection non-saturation analysis of the delays, construction of urban traffic flow of non-saturated mixed node impedance function, then get integrated transport impedance function.Finally, Nanchang Subway Line Riverside Avenue station, for example, through on-site investigation and analysis, to determine the affected areas, the methodology based on the Intersection turn OD matrix, the use of impedance function of the distribution of integrated transport model for traffic distribution, optimizing part of the cross port to carry traffic organization design, by evaluating the results of a good effect.