Research On Urban Rail Transit Train Operation Adjustment And Evaluation Simulation Under Signal Sytem Failure

With the continuous development of science and technology,the operation control technology of urban rail transit trains has also been continuously improved.In order to meet the increasing passenger demand,the departure density is getting higher and higher,the train tracking interval is getting smaller and smaller,and the train operation efficiency has been greatly improved,but this The anti-interference ability of the train operation is also reduced.Under the influence of various disturbances,trains are prone to delays.And due to the characteristics of small rail transit intervals,simple station wiring,and large passenger flow,once a delay occurs,the spread of urban rail transit delays will have unpredictable consequences on the entire network.At this time,if the adjustment method of train delay is improper,it will cause a wide range of subsequent delays,and will lead to passenger detention,reduced capacity,reduced service quality,and even threaten driving safety.Therefore,train operation adjustment is very important.This paper focuses on the relevant theories and methods of train operation adjustment of rail transit under signal failure.By analyzing the causes and propagation mechanisms of urban rail transit train delays,this paper summarizes the common disturbance factors in urban rail transit train operation,of which the signal system fault is the most Common failure factors.Combing the process and purpose of train operation adjustment in urban rail transit,summarizing the principles and methods of train operation adjustment under the current delay conditions,and analyzing the effect of different adjustment strategies on train operation.Analyze the impact of signal system and train tracking relationship on train operation adjustment,classify signal failure events,sort out the characteristics of urban rail train operation organization and train operation adjustment methods,and establish a train operation adjustment model for deductions and large and small crossings.On the basis of the existing train operation chart indicators,the train operation quality indicators that reflect the train operation level are selected,and since the urban rail train service object is passengers,the train operation delay indicators that reflect the service level are added,based on the analytic hierarchy process The method determines the weight of the evaluation index,and establishes a train operation adjustment evaluation system that can comprehensively reflect the effect of train operation adjustment.It not only helps the dispatcher to find problems in the train operation adjustment process,but also provides auxiliary decision-making and The optimization direction of the train operation adjustment plan.Finally,taking the Shenzhen Metro Line 1 signal system failure as an example,using a simulation system based on the actual data model of the Shenzhen Metro Line 1 real line facilities,signals,trains,operation diagrams,etc.,the train operation process and driving adjustment plan for the signal failure scenario Carry out simulation to realize the simulation analysis of train operation delay and train operation adjustment,verify the accuracy and effectiveness of the model,and use the train operation adjustment evaluation system to evaluate the simulation results of different adjustment schemes,and provide auxiliary decision support for optimizing the development of driving adjustment schemes.