【文章內容簡介】 “l(fā)oop” pattern of “The main in north and the minor in south” by southnorth loop line.According to the principle of selection and location of passenger station in hub, e up with three alternatives for the southnorth passenger station: reconstructing Nanning station（1）、new building Nahuang station（2）、new building Fengling station（3）. [ 3 ]III Evaluation index of construction scheme of passenger station in Nanning railway terminalA. Costs of engineering investmentCalculate 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 stationsCosts110264323B. Operating costs in terminal 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。—The number of passengers in l kind train which is from j station to k direction of hub。—The distance of l kind train which is from j station to k direction of hub in terminal。—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 trainsTraction by normalspeed trainDirection of KunmingDirection of QinzhouDirection ofLitangStation 119Station 201418Station 3202917Kind of trainsTraction by highspeed trainsetDirection of KunmingDirection of QinzhouDirection ofLitangStation 119Station 201418Station 3202917C. Costs of passenger tripsIn formula:—Cost of passenger going to station?！猅otal number of passengers from i district to j station for taking different kinds of trains (including highspeed train and normalspeed train)?！猆nit 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 stationCostsTwo 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)Alternative station 1Alternative station 2Alternative station 2District 1153025District 2102020District 315515District 4301020District 515105District 65255Table 5 The number of passengers taking normalspeed train of trip districts (10 thousand person per year)District123456The numberof passengersAfter evaluated, costs of trip of layout scheme of passenger station are listed in table 7.D. The other social benefits 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 cont