Research On Division Of Railway Transport Corridor In Chengdu-Chongqing Region

With building process of passenger railway line and intercity railway accelerating,a railway transport corridor formed by different levels of lines are gradually appearing between adjacent urban agglomeration,such as Shanghai-Nanjing railway corridor,Nanjing-Anqing railway corridor.But the reasonable orientation and scientific division of each line in corridor that we need to address an important issue.Chengdu-Chongqing urban agglomeration as the fourth large urban agglomerations approved by the government.It is an important problem that how to better serve Chengdu-Chongqing urban agglomeration.In recent years,the number of railways which connect between Chengdu-Chongqing are increasing.If we find a reasonable division and coordination for line in corridor,it is benefit of meeting the demand of social passenger and cargo transportation.Also it help to increass the speed of passenger train and freight train.It is of great significance to improve the quality and level of railway transportation service.Based on the analysis of the influence factors of division,this paper puts forward a method of hierarchical division of labor according to the structural form of corridor division.According to the national road network layout planning and the corresponding regional development policy,the division of labor in the high level road network is determined.By comparing the line loads,ransportation time,transportation revenue,the hump balance utilization and the hub coordination,a clear line division of lower network is selected.In this paper,we take Chengdu-Chongqi railway transport corridor as the research object.According to the administrative level,zoning Cheng-Yu area for OD.Each flow has a clear O point and D point.Based on the analysis and prediction of the passenger and cargo traffic volume of the corridor in 2020,and combined with main principle which is that the separation of passenger transport from freight transport,we can determine the function of each lines in the corridor on the aspect of passenger and cargo transportation,so as to formulate possible division scheme of lines in Chengdu-Chongqing railway transport corridor.According to the shortest path distribution principle,all OD flow in the corridor are assigned to each line of the Chengdu-Chongqing Railway transport corridor.Comparing the division scheme of lines in Chengdu-chongqing railway transport corridor from several aspects,including link utilization?timeliness of transportation?transportation income?coordination of marshalling yard?the distance of train run.Taking various factors into consideration,we need to choice the optimal and satisfactory line division scheme,so this scheme can meet the needs of passenger and cargo transportation,give full play to the technology advantage of the each line,optimize the overall transport organization of the corridor,promote the development of economic integration of Chengdu-Chongqing region,to construct the railway transportation system of "fast,convenient,large capacity,low energy consumption".