Study On The Carrying Capacity Of 200-250km/h Mixed Railway Line For Passenger And Freight

With the rapid development of intercity railroad of our country,the calculation of the carrying capacity of intercity railroad has become more and more important in the aspects of enhance the carrying capacity utilization and traffic organization level.According to the actual operation situation of intercity railroad,this paper analyzes the limited factors of running multi speed train in the 250km/h intercity railroad,and adopts the CTCS-2 train control system,and multi speed train tracking operation.Combining with the existing conditions,through the calculation and analysis to find the measures and means to improve the carrying capacity,to solve the bottleneck problem of the carrying capacity,and constantly optimize the carrying capacity calculation of running multi speed train in the intercity railroad.The main research contents of this paper are:(1)From the three aspects of railway equipment,transport organization and transportation demand analysis the influence factors of the carrying capacity of intercity railroad,introduce the main calculation methods of the carrying capacity of intercity railroad:graphic method,deduction coefficient method and minimum train interval method,detailed analysis the difference and relation between the calculation method of the three methods.(2)From the two angles of passenger flow and transport organization of intercity railroad,analysis of the characteristics of the intercity railroad,introduced the classification of intercity railroad,combined with the situation of ChangJiu intercity railroad,analysis of the forecast of the ChangJiu intercity railroad passenger flow.(3)Focuses on the calculation method of paralleled train diagram and non paralleled train diagram of intercity railroad,and the calculation method of carrying capacity of under the condition of high and middle speed trains running in the same railroad.On the basis of the above,study the calculation method of the train diagram of the intercity railroad,the track interval of the train,the calculation method of the deduction coefficient of the high speed and common speed train.Analysis the calculation method of the intercity railroad of carrying capacity and deduction coefficient in different condition,and quoted the calculation formula respective,and has certain reference value for other research.(4)On the basis of analysis the carrying capacity of intercity railroad,combined with the situation of ChangJiu intercity railway,some measures has put forward to improve the carrying capacity of intercity railroad:shorten the time interval between two trains,change the mode of transport organization,adjust the train mix proportion,set up a reasonable station distance,optimize train type and speed grade running on the intercity railroad,optimize the skylight time and improve the dispatch and command ability.