The Impact Analysis Of Passenger Hub To The Urban Traffic Congestion

Passenger transport hub is the important node of urban internal traffic and external traffic and is the communication bridge of external and internal traffic of the city, and is also the foreign portal of the City. In order to provide the traveler with convenient transportation, Passenger transport hub gradually has developed into organic whole from the beginning of a single transportation into a variety of modes of transport.Passenger transport hub integrates a variety of resources, and achieve economies of scale in transportation. Since the modes of transport of most passenger transport hubs are the lack of unified planning,The setting of inward and outward transportation is not reasonable, All kinds of transportation has its own main traffic flow, And passenger flow of some kinds of transportation has peak hours when it is in and out of the station, this situation has intensified the impact of the traffic flow in urban road network, the phenomenon of traffic congestion has been in frequent which is surrounding the Passenger transport hub,and has also became a difficult problem for a long time.This paper mainly studies the influence of the existing passenger transport hub on the surrounding traffic congestion from the aspects of passenger transport hub of time and space, the concentration outbound of railway passenger flow and the concentration getting in induce the accumulation and dissipation of traffic flow peak. This phenomenon can be seen in many cities, and the superposition of city traffic in the morning and evening peak, and the traffic jam has been around the hub. the inward and outward of hub have been excessively focused on the one of the sections, which is the reason of traffic congestion in space. And traffic flow to the excessive concentration of hub around the road has induced serious imbalance, And the heavy traffic jam caused by the inward and outward direction have not accordance with the traffic flow, the line up caused by the unreasonable entrance has influenced on the upstream intersection and the spread of traffic flow in the downstream caused by the unreasonable position of exit has influenced on the exit. Hub of inward and outward incompetence is another important factor affecting the urban traffic congestion. In order to ease the congestion caused by the time concentration of traffic flow by strengthening the cohesion in railway and subway, Through the rational setting of passenger transport hub entrances and the organization of traffic flow can take to relieve the space level of congestion. Finally,it is considerate the passenger transport hub of Chengdu north station as the research object, and analyze the impaction of traffic congestion caused by passenger hub, And formulate the corresponding control measures, and Include the introduction of the entrances and exits on overhead.