STUDY ON RAILROAD CAPACITY STRENGTHENING METHOD BASED ON NONPERIODIC DYNAMIC PROGRAMMING

The shortage of railroad capacity has been the major constraint in the development process of railway transportation recently. In order to guarantee enough railway capacity to meet the demands of the rapid speed of national economic development, it's extremely urgent to implement the transformation for capacity expansion and achieve the purpose to improve railroad capacity. Making the proper railroad capacity strengthening measure program is the key point. In ordinary circumstance, it is departed into several phrases to put the measure of railroad strength capacity into effect, so the railroad capacity is also improved at intervals. There are three factors, which are the number of phases to strengthen railroad capacity, the order of each strengthening measure and the optimal implementation year in the railway capacity strengthening program. According to the dynamic programming principle, combined with the characteristics of Nonperiodic and multistage, this paper put forward the model of Nonperiodic-multistage dynamic programming to railroad capacity strengthening program by using transportation volume adaptation chart and gave the steps of the algorithm using the sequential method. Taking Datong-Zhungeer line as an example, this paper analyzed its present situation and requirements in the future development, summed up and summarized proper measures to strength railroad capacity and got obtain the program to strength railroad capacity of measurement by using the model of nonperiodic dynamic programming.