Research On Train Operation Adjustment Of Urban Rail Transit Network Under Bidirectional Interruption

As a complex transportation system with large volume,the operation interruption in some sections of urban rail transit network is inevitable.In recent years,a number of operation interruptions in various cities have produced great social impact,which brings inconvenience and certain safety risks for passengers.At present,the means to deal with the operation interruption are relatively single,so it is necessary to study the operation organization of urban rail transit under the condition of interruption.Train operation organization is the key issue of rail transit operation organization.At the same time,considering the influence of partial interval operation interruption on the whole network,it is significant to study the problem of train operation adjustment in urban rail transit network under the condition of interruption.This paper takes the long-term bidirectional interruption of urban rail transit operation as the research scenario,divides the operation interruption into two parts: the interruption period and the recovery period,and studies the route adjustment strategy and passenger route selection behavior under the bidirectional interruption.Based on the train and passenger flow in the condition,a cooperative adjustment model of the train schedule in urban rail transit network is established,which can be used to generate the adjusted train schedule in the condition of bidirectional interruption.Finally,a case is given to prove the usability of the research results.Specific research contents include:(1)Theoretical analysis of operation interruption of urban rail transit.This paper classifies the operation interruptions of urban rail transit from three aspects,namely,the direction,the range and the duration of the interruptions,and analyzes the interruption management methods under different types of interruptions.The specific research category of this paper is determined: local line bidirectional operation interruption of more than 30 min,and the adjustment strategy of short turning route based on the research category of this paper is given.(2)Passenger route selection under bidirectional interruption.The affected passenger flow under bidirectional interruption is classified,and the subsequent choices of the affected passengers are summarized as waiting,detour and exit from the rail transit system.Then,the set of effective paths and the generalized cost of each path are determined.Taking the sum of the generalized cost of the passenger’s original planned route and the delay tolerance time as the reference point,a passenger route selection model under the condition of bidirectional interruption based on the cumulative prospect theory is constructed,which provides accurate passenger flow input for the train operation adjustment model.Finally,a case is used to verify the accuracy of the passenger route selection model under bidirectional interruption.(3)Modeling and algorithm.The adjustment process during an operational outage is divided into three phases: the outage response phase,the outage persistence phase and the recovery phase.For the interrupted lines and other lines connected with the interrupted lines,a two-stage collaborative adjustment model of network train schedule in the interrupted stage and the recovery stage is established.The model takes the minimization of the total waiting time of passengers and the penalty time of passengers exceeding the train capacity as the objective function,and the train operation,passenger riding,road network transfer and train capacity as the constraint conditions.According to the characteristics of the model,a genetic algorithm was designed to solve the two-stage model.Finally,the CPLEX solver and the designed algorithm were used to solve the example at the same time,and the results were compared and analyzed to verify the effectiveness and rationality of the model and algorithm.(4)Case study.A specific disruption scenario of local network of urban rail transit is taken as the research object.According to the short turning route adjustment strategy,the short turning route return station of the interrupted line is determined.According to the passenger path selection model under the bidirectional interruption based on the cumulative prospect theory,the passenger flow under the case interruption scenario is calculated.According to the collaborative adjustment model of the network train schedule under the bidirectional interruption of the operation interval,the train schedule of the interrupted line and the connecting line is calculated.By comparing the results of collaborative adjustment of network train timetable with those of single train timetable and non-organized small traffic operation,it is proved that the proposed collaborative adjustment model of network train timetable can effectively reduce the total waiting time of passengers and the punishment time of passengers exceeding the train capacity.The paper also analyzes the time coefficient of punishment for passengers exceeding the train capacity,the impact of interruption duration on the model results,and the timing of organizing small interchange operation,and verifies the feasibility and practicability of the model in actual cases through case study.The thesis contains 77 pictures,32 tables,and 72 references.