Research On Modeling And Method Of Urban Rail Transit Train Operation Adjustment Under Delay Conditions

As a part of urban development,urban rail transit plays an important role of urban public transportation which is the main artery of passenger transportation and the lifeline of urban development.Nowadays,green development is advocated and urban rail transit itself has the advantages of energy saving,land saving,strong transportation capacity,and no pollution.In recent years,the development of urban rail transit is developing rapidly in developed cities all over the world.The network of transportation system is also getting more complicated than before.So the minimum tracking interval of the train is continuously compressed and the difficulty of urban rail transit operating organization is further increased.Therefore,some problems in urban rail transit operating organization management are coming up.Under normal circumstances,the train will run in a regular and orderly manner according to the planned plan.However,due to the small fault tolerance of urban rail transit,various train disturbance factors will cause the actual running time of the train to deviate from the planned running diagram.Once the train is delayed,the impact will be far-reaching,including delays in transmission,declining train capacity,and passenger concentration,which affect the normal operation of urban rail transit.Recently,here is no mature system theory for the delayed train to adjust in a quantitative way.In contrast,it relies on dispatchers to adjust according to the experience of the crime scene.Therefore,based on the study of delay and propagation mechanism,this paper analyzes the train delay adjustment strategy which match the train automatic adjustment model with small delays and the manual adjustment model with large delays.In the small delay model,the delayed time is considered to be the smallest.The minimum waiting time of all passengers is also be considered.And this paper designs the algorithm solution of particle swarm optimization to handle this model.In another case,this paper takes the deduction of car as an example to give the relevant calculation method of the number of deductions and the deduction time that provide some guidance of train operation adjustment.Based on the research on the generation model and algorithm of train adjustment method,this paper studies the Web application development technology based on.NET developing platform,and designs the urban rail transit train adjustment simulation system based on the theory of train operation diagram theory.Finally,the train operation adjustment simulation analysis is carried out based on the data related to the train operation of Shenzhen Metro Line 5 which shows the main functions of the train operation adjustment including single train delayed,multiple train delayed propagation and manual deduction adjustment operation under large delay conditions.it is proved that the algorithm model of this paper is effective by the intuitive analysis of the train operation diagram and the comparison of the train operation indexes before and after the adjustment which can provide a certain train operation adjustment basis for the dispatcher.