Research On Theory&Method Of Capacity Calculation&Evaluation For High Speed Railway

The railway capacity is not only the primary condition for the allocation of the railway resource, but also a key index for the evaluation of its usage. Calculation&evaluation of the railway capacity is a classic research topic, which implies the meaning for the academic research and the value for its application in the practice. This thesis analyses and evaluates the main development procedure of the theory&method for the calculation&evaluation of the railway capacity, including its trend of development. Aiming at the unsatisfied problem on the precision of the capacity calculation, grasping the characteristic of the dynamics and uncertainty of the railway capacity, from the angel of the topology of the physical infrastructure-passenger demand-timetable planning, this thesis proposes the high speed railway train service-demand intention set (TSDIS) and regards the time needed to complete the given TSDIS set as the updated criteria for the railway capacity. It builds the framework for the station\line\network of the high speed railway in the timetable planning phase and puts forward the corresponding strategy and methodology for the calculation&evaluation of the railway capacity, which are demonstrated in the application of the case. It explores the theory&method for the calculation&evaluation of the high speed railway infrastructure which is in the way of optimized usage.The main contents of the thesis are summarized as following:1.The updated criteria of the raiway capacity for its calculation&evaluationAccording to the dynamics and uncertainty of the railway capacity and the characteristics of the passenger served by the station\line\network, combined with the railway operation requirement, from the angel of the topology of the physical infrastructure-passenger demand-timetable planning, this thesis defines the high speed railway train service-demand intention set (TSDIS) and takes the the time needed to complete the given TSDIS set as the updated criteria for the railway capacity. The railway capacity is classified as the basic capacity, the practical capacity and the developable capacity.2.The basic empirical theory on the calculation&evaluation of the high speed railway capacity.The railway capacity is effected by many factors, most of which embody on the time dimension. This thesis analyses the static description and the dynamic procedure of the train operation and summarises the blocking time&the occupation time of the infrastructure\the time interval&the minimum time interval\buffer time and the repair time, which introduce the flexible analysis changing the way of the current simpe rigid caluation of the railway capacity so as to improve its reliability and precision.3. Analysis on comprehensive balance of the train operation plan for the high speed railway under mixed traffic conditionThe train operation plan determines the usage of the railway infrastructure. This thesis analyses the number of trains\average speed\stability\heterogeneity and their mutual relationship. It proposes the idea of the comprehensive balance of the train operation plan under the Pareto optimum and takes the heterogeneity as the basic criteria for the railway capacity calculation&evaluation and the formation&evaluation of the train operation plan.4. The methodology on the calculation&evaluation for the high speed railway capacityBased on the temporal and spacial distribution characteristics of the passenger, from passenger market demand, this thesis builds the system of the high railway capacity calculation&evaluation under a certain service level.(1) The methodology on the calculation&evaluation for the high speed railway stationAccording to the characteristics of the high speed railway station and the passengers it serves, combined with the raiway operation requirement in different temporal phrase, it defines the train service-demand intention set at station (t@s-tsdis), and it summarises some kinds of strategies for the calculation&evaluation of the high speed railway station. Also, it proposes the general layout level-regional layout level model system which is put into the application of the certaion high speed railway station BJSS. Taking advantage of the bilevel model system, it obtains the optimized trains occupation sequence on the station tracks for the BJSS list t@s-tsdis. By checking in the regional layout level, it achieves the time needed to complete the BJSS list t@s-tsdis (namely the temporal capacity of BJSS), and it gives out the bottleneck of the BJSS station.(2) The methodology on the calculation&evaluation for the high speed railway lineAccording to the UIC406capacity leaflet, the number of trains, the average speed, the heterogeneity and the stability are regarded as the core elements of the capacity usage. This thesis defines the train service-demand intention set at the high speed railway line (t@l-tsdis). Considering both the train service quality and the benefit of the railway operation, it builds the multi-objectives (minimization of the heterogeneity, maximization of the reliability, minimization of the operation time) Mathematical Program for Line Capacity (MPLC) and gives out the problem-oriented rolling optimized solution method for the multi-objectives model with constraints (the combination of the improved Pareto Archived Evolution Strategy and the interaction method).The model and its solution method are applied on the Jing-Hu high speed railway.The Chinese high speed railway can be classified as the type of intercity (such as Beijing-Tian, Shanghai-Hangzhou, etc), the type of channels (such as Beijing-Shanghai, Harbin-Dalian, etc), the type of network end (such as Xi’an-Lanzhou, Chongqing-Chengdu, etc).The model and its solution methods are adaptable to each of these kins of high speed railway lines.(3) The methodology on the calculation&evaluation for the high speed railway networkThis thesis discusses the design of the service network for the high speed railway and analyses the rail capacity under the condition of the network. It also proposes the system of the service quality framework and the basic mindmap for the high speed railway network. According to the characteristics of the multi-level control system of the railway network, it analyses the network effects of the high speed railway.