| With the rapid development of the economy and the change of national life needs,the demand of passengers for travel has also increased significantly.As a fast,efficient,comfortable and economical way to travel,high-speed railroad is well loved by passengers.In recent years,the railroad department has been running additional passenger trains to meet the travel demand of passengers,which has led to the increasing tension in railroad transportation capacity.It is found that the factors restricting the capacity of the railway line network mainly lie in the stations,and the superiority of the station arrival and departure line operation plan has a great impact on the station operation capacity and the capacity of high-speed railway lines.In response to the call of China State Railway Group to "tap the potential and improve efficiency",it is essential to refine some of the parameters of the arrival and departure line operation plan in order to realize the need to further improve the passing capacity of highspeed railroad lines on the existing basis.This paper studies the preparation and adjustment method of the arrival and departure line operation plan of high-speed railroad stations under the condition of parameter refinement,and the main research contents are as follows:(1)Analyze the three levels of impact on the arrival and departure line operation process,analyze the types of high-speed railroad stations,the scope of operations handled by each type of station and the equipment used to handle the arrival and departure line operation;classify the station arrival and departure line operation according to the train handling arrival and departure line operation,and introduce the various operation processes in detail;finally,show the requirements and processes that must be met in the process of preparing the arrival and departure line operation plan according to the on-site operation process,and provide basic theoretical support for the subsequent study.(2)The composition and calculation methods of various types of time during train handling operations in high-speed railroad stations are studied.The components and calculation methods of the arrival and departure line occupancy time and approach operation time are analyzed in detail from three levels: arrival and departure line,approach road and station throat area equipment.The time components,constraints and calculation methods of multiple trains on single equipment,single train on different equipment in the approach and different equipment considering the influence of train length are analyzed in the approach operation time.Finally,according to the above time calculation method,the influence between different kinds of approach operations is analyzed,and the minimum interval time of the arrival and departure line operation of high-speed railroad stations is studied from the composition and calculation method.(3)The problem of arrival and departure line operation at high-speed railroad stations under the condition of parameter refinement is described,and the influence of train length,train speed class,approach length and equipment factors on the arrival and departure line operation planning process is analyzed.A 0-1 integer planning model is constructed for the three levels of "train-arrival and departure line-approach-station equipment",which finally constrains the problem by considering the working time of the equipment used by trains for various operations in the station,and a planning model is constructed with the total equipment operating time and the arrival and departure line equipment balance index as the objective function The model of adjustment plan with the objective function of total late time and minimum adjustment volume is also constructed.And the genetic algorithm is designed according to the characteristics of the model;in order to avoid the unsolvable situation due to the large size of the arithmetic case,the genetic algorithm based on rolling stock is proposed.(4)A case study with a station of Beijing-Guangzhou high-speed railroad working on a certain day is designed to verify the feasibility of the model and algorithm proposed in Chapter 4.Through the analysis,it is found that the length and location of the equipment have a large impact on the arrival and departure line operation process.In the calculation process,the influence of the selection of parameters in the algorithm on the calculation time of the algorithm is considered,and the optimized scheme is compared with the original scheme to verify the feasibility of the model and the algorithm calculation,and a better algorithm parameter selection scheme is proposed. |
