Optimization Model For Station Operational Schemes On Passenger Dedicated Lines

Since Beijing-Tianjin intercity high-speed railway opened in 2008,China's high-speed railway has developed rapidly in recent years.By the end of 2013,China's passenger dedicated line mileage has exceeded 11,000 km.China also has the world's longest operating mileage and the highest commercial operating speed of high-speed railway.As the fastest rail passenger service,it is necessary for passenger dedicated line to implement more sophisticated and scientific management.Therefore,it has very important significance to establish the experiment analysis model of station operation management and transport organization.Passenger station is a place where passengers arrive,depart and transfer.On passenger dedicated line,the works concerned with train movement include train arrival,departure,passing through and turning-back.Meanwhile,the works concerned with passengers include waiting,boarding and alighting,transferring.Servicing works of the train are entrance&exit depot,maintenance,etc.The level of station operation directly reflects passenger dedicated line's service level,service quality and management level.It also directly affects the transport ability.Passenger station is the focus of the complexity of transportation system.The level of station operation is not only related with the external transport task,but also influenced by the number of equipments and station layout.Therefore,it has great significance to study the relationship among station operations,equipments numbers and station layout,establish the transportation process experiment analysis model based on certain station layout scheme,and evaluate the operation efficiency of the key equipment,such as turnout,arrival-departure track.The research can not only lay a foundation for planning and designing new station in passenger dedicated line,but also provide technical support for station operation organization method and station reconstruction optimization.Based on the traditional station capacity calculation theory,the network model of passenger dedicated line station is established by traction calculation technology.The model is established from the aspect of station equipment utilization and comprehensive evaluation,and it also takes the specific characteristics of China's passenger dedicated line into consideration.Then,this paper analyzes train movement on railway lines and train arrival and departure in stations.Furthermore,a model for generating and optimizing station equipment utilization plan under certain train diagram is build.By analyzing the relationship between plan execution and equipment utilization,this paper also establishes the evaluation model of station operation and equipment layout.At last,the experiment analysis of the given case is carried out.The main contents and conclusions of the dissertation are as follows:(1)Station operation network modelThis paper realizes the digitally description of the relationship between station and the surrounding network by computer technology.By means of constructing the effective network model,the data description model of the maintenance and electricity of equipment network is build at the same time of describing the interrelation of the equipments.The proposed model is the foundation for the analysis and evaluation of the relationship between the station layout and station operation.(2)Station operation plan and optimization modelThe planning and optimization model of each operation at station is constructed based on train diagram.Meanwhile,considering depot allocation scheme,multidirectional train-set connection scheduling model is build.Referring to vehicle maintenance scheduling,the model of entrance&exit depot is proposed,which can provide methods for the feasibility study of train-set scheduling.(3)The model for generating the occupation plan of arrival-departure track under certain train diagramThe model is studied according to the horizontal and longitudinal section design scheme.This paper puts forward the evaluation index of the utilization level of key equipment,such as turnout,arrival-departure lines.Furthermore,the genetic algorithm is applied into optimizing the utilization of arrival-departure track.(4)Station operation process experiment analysis methodBased on the train traction calculation technology,the experiment analysis of station operation process considering the shunting signal constraint is build.The analysis method can evaluate the reliability of fixed-time train-running under signal system,and it can also analyze the feasibility of minimal-time running of the delayed train on the primes of obeying the rules of the signal.The proposed method can provide the method for managing the station operation scheduling.(5)Comprehensive evaluation model of station operation scheduling and facility utilizationBased on the former model,the train performance statistical index is proposed.The relationship between vehicle flow structure and turnout,arrival-departure track is analyzed by grey correlation analysis method.The model can evaluate the matched-degree between station operation scheduling and station facilities layout.