Study On The Influence Of Closed Part Intermediate Station On Passing Capacity

In recent years,China railway construction has made brilliant achievements.The article analyzes the pattern of China existing cable transportation organizations on the basis of summarizing predecessors' researches.Due to the long-term use of passenger and cargo trains in China existing lines,the speed of passenger and cargo trains The differences have a significant impact on the railway transportation efficiency and the sector passing capacity.With the adjustment of the transportation organization model and the transportation production layout,the passenger freight business of some intermediate stations on the existing railway line has been reduced or cancelled,some cargo loading and unloading lines have been decommissioned and special lines have been used.Due to the relocation of the company,some stations have only passed the train through the expansion.On this circumstance,the needs to close some intermediate stations and close different grades of stations has arisen,and with the planning,construction,and operation of high-speed rail and passenger dedicated lines,the transfer of some passengers to high-speed railways and passenger dedicated lines has caused the existing lines to face this fact.The transportation market has undergone a certain degree of change.Therefore,in the mode of transporting passengers and cargo on the same line,it is of theoretical and practical value to study the influence of closing stations for the capacity of existing lines.The existing scholars have combined the characteristics of their transportation organization on the basis of the research results of the existing railway lines.Firstly,classify and sum up the factors affecting the train running characteristics of the existing passenger and cargo transportation line.Then,combined with the role of the four-display fixed occlusion in the speed increase of China railways and the successful experience gained from practical application,it is shown that the four-display fixed occlusion is suitable for China passenger and cargo transportation lines.The variables are analyzed in the paper,which are mainly about closing intermediate stations.After some intermediate stations and stations of different grades,we simulate the train speed and time delays of class A trains.class A trains will be affected when the factors such as the mixing ratio of different trains,stop time,number of arrivals and departures,station spacing,and departure interval change.The article,through the study of simulated data,analyze the impact of closing intermediate stations and blocking different grade stations to the train running characteristics and passing capacity.In the study of the related problems of train operation,it will waste a lot of manpower and material resources by carrying out experiments through the lines of the existing lines,so it can provide great development space and a good research method for the problems related to the train operation if computer program is used for the simulation of the correspondingresearch problems.Meanwhile,the special potential of computer program in simulating the actual operation of train is also proved,it is a reliable platform for researching on train control theory and train operation organization management.Therefore,this paper uses the cellular automata model to analyze the tracking process of train operation on the existing railway,the stopping time of trains on the station and the factors restricting the passing capacity are analyzed.Then a cellular automaton model for train operation under four display fixed occluding mode is established based on the analysis of train operation characteristics under different speed matching schemes.In the model,the three train speeds of A,B and C are(passenger: 160km/h,120km/h;goods: 80km/h).Based on the existing cellular automaton model as a theoretical basis for the follow-up study of this paper.the simulation of railway traffic based on cellular automaton are introduced in detail,and the train tracking simulation system based on cellular automaton is established to analyzes and sets the initial conditions,which facilitates the comparison of the operation results and the train operation rules of the closed intermediate stations and different grade stations.The model can adjust the mixed train ratios of various types of trains to simulate the train flow.The control-ability of the program can simulate the running conditions of the train on the line more realistically.For example,after closing some intermediate stations and stations of different grades,factors such as time and stop time of the train will change to simulate the running characteristics of the train before and after closing part of the intermediate station,so that the influence of various factors on the train operation will be compared and analyzed.This paper focuses on the theoretical analysis of the influence of the closed intermediate station on the passing capacity,and provides theoretical guidance for the relevant research of train operation.