【文章內(nèi)容簡介】 ruction scheme of passenger station in Nanning railway terminal A. Costs of engineering investment 1z Calculate the investment of line、 demolition、 land expropriation、 bridge、 tunnels of the construction scheme of passenger station. The costs of engineering investment of all schemes are presented in table 1. Table 1 Main engineering investment of alternative stations（ 10 thousand Yuan） Number of alternative stations Costs 1 102643 2 3 B. Operating costs in terminal 2z ? ?2 1 1 1 2J K L j k l j k l lj k lz u S ?? ? ?? ??? In formula: j—The number of passenger stations in hub。 k—The direction in hub。 l—Different trains in hub, including highspeed train and normalspeed train。 jklu —The number of passengers in l kind train which is from j station to k direction of hub。 jklS —The distance of l kind train which is from j station to k direction of hub in terminal。 l? —The unit operating cost of l kind train. In accordance with the cost of one person per kilometer, the operating cost of taking normal passenger train is per person in one kilometer. The operating cost of taking highspeed trainset is per person in one kilometer. For three alternative stations, the distance of different kinds of trains to each direction is listed in table 2 and the operating costs of different passenger station in hub are presented in table 3. Table 2 The shortest path of alternative stations in accordance with direction（ km） Kind of trains Traction by normalspeed train Direction of Kunming Direction of Qinzhou Direction of Litang Station 1 19 Station 2 0 14 18 Station 3 20 29 17 Kind of trains Traction by highspeed trainset Direction of Kunming Direction of Qinzhou Direction of Litang Station 1 19 Station 2 0 14 18 Station 3 20 29 17 C. Costs of passenger trips 3z ? ?3 11 3IJ ij ijijz c u??? ?? In formula: 3z —Cost of passenger going to station。 iju —Total number of passengers from i district to j station for taking different kinds of trains (including highspeed train and normalspeed train)。 ijc —Unit cost of passenger trips from i district to j station for taking trains. Table 3 Operating costs in hub (10 thousand Yuan) Scheme of passenger station Costs Two stations（ 2） Three stations（ 3） According to the administrative region planning in Nanning downtown、 the distribution of railways and rivers, Nanning can be distributed into six residents trip districts. Table 4 Costs from trip districts to alternative station (Yuan) ijC Alternative station 1 Alternative station 2 Alternative station 2 District 1 15 30 25 District 2 10 20 20 District 3 15 5 15 District 4 30 10 20 District 5 15 10 5 District 6 5 25 5 Table 5 The number of passengers taking normalspeed train of trip districts (10 thousand person per year) District 1 2 3 4 5 6 The number of passengers After evaluated, costs of trip of layout scheme of passenger station are listed in table 7. D. The other social benefits 4z By applying the threestation scheme（ 3） , it is convenient to arrange the task of different stations in hub .The car flows travel smoothly in hub and it is convenient for passengers to take trains. The twostation scheme （ 2） can’t consider partial regions of the city and the contact between stations is not frequent and it is not convenient for passengers to go out. Table 6 The number of intercity passengers of trip districts (10 thousand person per year) District 1 2 3 4 5 6 The number of passengers Table 7 Trip costs of passengers in terminal (10 thousand Yuan) Scheme Costs Two stations（ 2） Three stations（ 3） IV Selection of optimization scheme of the layout of passenger station in