Key Technology Of Compiling Railway Train Diagram During Alternating Periods Between The New Train Diagram And The Current One

In the new era of growing development,as the support of the national economy,the importance of railway has become increasingly prominent.In solving the problem of unbalanced development in China’s regions,railway shoulders the major strategic mission of the country.The train operation diagram is a planning document to arrange the time of the train running in the interval and the arrival,departure or passing at the station in the railway operation organization,and it is also the core plan to organize the orderly production of the transportation system.The work of preparing train operation diagram is heavy and complicated,but with the updating of technology,the continuous improvement of infrastructure and the fluctuation of transportation demand,the preparation of train operation diagram is more and more frequent.At present,the preparation of train diagram in China is mainly based on computer,replacing manual preparation in the past,which greatly improves the efficiency of the preparation of train diagram.As the train operation diagram alternation tends to become daily,it is necessary to work out the transportation plan of the alternation between the old and the new.Therefore,this paper deeply studies the key technology of the train operation diagram preparation during the alternation between the old and the new,and provides a theoretical basis for the transportation organization work of the railway department during the alternation between the old and the new one.The main research contents of this paper are as follows:(1)This paper studies the preparation theory of the train operation diagram,defines the train operation diagram in detail,and analyzes the passenger transport organization plan,train operation and undercarriage utilization sub-plans.Passenger trains that changed around the new and old period are classified and their changing process is studied respectively.(2)This paper introduces the preparation process of the train operation diagram of the new train alternation,analyzes the methods in the preparation of the train operation diagram of the new train alternation,obtains the basic rules of the preparation of the train operation diagram of the new train alternation,links the old train operation diagram with the new train operation diagram,deduces the preparation ideas,and divides the preparation process into three stages:In the first stage,the application plan of the old and new train floor is formulated;in the second stage,the conflict resolution of the train running diagram is resolved;in the third stage,the train running line is adjusted to realize the macro transformation of the train running diagram from the old order to the new order.(3)This paper studies the turnover optimization model and its solving algorithm during the alternation between the existing and new drawings.In the fixed operation mode of car bottom,the restriction of existing and new picture on the connection between old and new car bottom is taken as the constraint condition,and the optimization objective is to minimize the total time of car bottom connection and the minimum number of train stops.A sequential intelligent algorithm based on the principle of early arrival and late departure is designed.Used in car is not a fixed mode,the same figure and new car to new era in place of the restriction as constraint conditions,to train in the shortest time as the goal,integer programming model is established,the particle swarm optimization(pso)algorithm is studied,and the application of genetic algorithm in this problem,finally combining both advantages of hybrid particle swarm-genetic algorithm is designed.(4)On the basis of solving the turnover scheme of the train bottom,the conflict detection and conflict resolution of the train running diagram are carried out.Then,since the train operation diagram in the transition period is actually another train operation technical plan independent of the existing and new drawings,it can be adjusted and optimized.Based on the redundant time theory,the paper adjusts the operation diagram of the old and new trains to reduce and eliminate the stopped trains,so as to make the operation diagram of the old and new trains enter a tense state and optimize the allocation and utilization of the resources of the operation organization of the old and new trains.