| The high-speed railway station is not only a window for serving passengers,but also a core node of the transportation organization.It is usually located at a key node of the road network.Not only is it busy,but it also has high requirements for safety and reliability.Even the transport quality of the entire road network.In the process of transportation organization,it is inevitable that disturbance factors such as equipment failure and extreme weather will affect the orderly operation of the high-speed rail system.Therefore,the reliability of the high-speed railway station operation plan under the disturbance state will directly affect the quality of passenger operations.In this paper,reliability is defined as the set of anti-disturbance capability and disturbance recovery capability.The concept of comprehensive interference coefficient is created and used as the objective function.Combined with the time-space operation chain model,the station operation plan is chain optimized.The main work includes the following aspects:(1)In-depth summary and analysis of existing research results on operation plan optimization of high-speed railway stations,starting with the characteristics of station operations,and in-depth summary of the causes,types and results of station disturbances.And on this basis,the definition of broad and narrow reliability is defined.(2)Create a comprehensive interference coefficient concept to model and solve the operational reliability of high-speed railway stations.First,the time-space operation chain is used to describe the station operation chain,and the time-space occupation function is calculated.On this basis,the concept of comprehensive interference coefficient is created,set as the optimization target,and a reliability chain optimization model is established.(3)Construct a comprehensive evaluation system for the reliability of the operation plan of high-speed railway stations.According to the principles of comprehensive evaluation system construction,reliability evaluation indexes,namely anti-disturbance capability and disturbance recovery capability,are constructed.Then solve the membership function,index weights,etc.to establish a comprehensive evaluation system.(4)Take the Beijing South Railway Station as a case to verify the effectiveness of the model and algorithm.First,use the chain optimization model to optimize the original station operation plan,and get the optimized station operation plan.Then,through the reliability evaluation system,the indicators before and after optimization are calculated and visualized to verify the effectiveness of the chain optimization model. |
