Simulation Study For Arrival And Departure Trains At High-speed Yard In Beijing South Railway Station

According to the requirements of China’s "Medium and Long-term Railway Network Planning",the "14th Five-Year Plan" period is a key stage for China to accelerate the construction of a strong transportation country and promote the high-quality development of railroads.The plan proposes that the mileage of high-speed railroads should reach 38,000 km till 2025,and the speed and density of trains have been raised to a new level.Beijing South railway station,as the departure station of Beijing Shanghai high speed railway,on the one hand,has a large number of operations and needs to undertake the work of Beijing Shanghai high speed railway,on the other hand,the operation organization is complicated,and all train arrival and departure operations are concentrated in single-side strategic passage.These characteristics determine that an in-depth study of the arrival and departure process of the high-speed yard at Beijing South railway station is important to daily transportation organization.Previous studies have focused on establishing mathematical models and constraints and applying mathematical planning methods to solve the problem.As an important supplement to mathematical planning,the simulation method can effectively make up for the shortage of mathematical planning method in the arrival and departure process by simulating the arrival and departure process of CRH Multiple Units in real scenarios.The paper focuses on the simulation of the arrival and departure process in the high-speed field of Beijing South railway station,which mainly includes the following four aspects.（1）Analysis of the train operation process in the high-speed yard of Beijing South railway station.Analysis of the Beijing South railway station high-speed field arrival and departure of the main types of operation,occupancy equipment and occupancy time has been carried out for the Beijing South railway station high-speed field operation type,operation characteristics.（2）Simulation of CRH Multiple Units model based on traction calculation.The calculation method of traction calculation in the operation of the simulated CRH Multiple Units model is studied,and the function of running the simulated CRH Multiple Units model along the approach road to the target position is realized by combining the operating strategy of the CRH Multiple Units and the conversion of traction conditions.（3）Beijing South railway station high-speed yard simulation system development.The whole process of train arrival and departure in Beijing South railway station high-speed yard is analyzed,and the simulation station module,simulation approach module and simulation train module are abstracted out to realize the station interlocking to assign the approach to the train in the simulation environment,and the train occupies and releases the track section in the process of operation.Based on the model design,the simulation system of Beijing South railway station high-speed yard is developed in C# language.（4）Based on the simulation system,the objective of the Beijing South railway station high-speed yard arrival and departure line occupancy balance and turnout occupancy balance is discussed.The peak map of Beijing South railway station involves all the train database in Beijing-Shanghai direction as the initial scheme,and the equipment utilization is calculated by simulation,and the optimization degree of the scheme is evaluated according to the model objective function,so as to verify the correctness of the simulation model function and the effectiveness of the scheme optimization.There are 42 figures,14 tables and 48 references in this thesis.