Coordination Optimization Study Of Route Selection And Track Utilization In Large Railway Passenger Station

At present,in our country the long-distance passenger transport,railway passenger transport has obvious advantages,also occupies an important position.Railway passenger station is a window that railway service to the passenger,is a close link between the two,the level of work organization of railway passenger station directly affects the transport efficiency and service quality,therefore according to the train diagram,how to arrange the receiving and sending trains and shunting operation reasonably,coordinate various operations in space and time,ensure operation safety and efficiency and improve the level of service is top priority.Track utilization and route selection are two important links inside the operation organization of railway station,train access a arrival-departure track or train leave from a arrival-departure track which may has many routes available.After assign the appropriate line for the train,the optional set of receiving routes and the optional set of departure routes are determined,from another point of view,once the route of the train is determined,access to the arrival-departure tracks will be determined,choose the route for train is a process to realize the reasonable allocation of arrival-departure tracks.Therefore track utilization and route choice are too parts,they are closely linked,can’t separate research one of them,it is necessary to study coordination and optimization of route selection and track utilization.Based on the background of large-scale railway passenger station,based on the detailed analysis of the main operation content of passenger station and passenger train technical operation process,by studying the structural similarity of the binary tree and the station yard,focus on the train route search,design the corresponding algorithm of the reverse route search,which can search route automatically and quickly,generate throat route table.The model of coordination optimization of route selection and track utilization of large-scale railway passenger station is built,maximum preference of trains selecting routes,to ensure the safety of operation of train,shorten walking distance of passengers of in and out of the station,and balanced utilization of arrival and departure tracks are objectives,the constraint conditions include the basic servicing work constraint of trains,the constraint of avoiding route conflict between works,the uniqueness constraint of arrival and departure tracks occupation,and the uniqueness constraint of route occupation,and so on.This paper uses a heuristic algorithm to solve the model,the process of track allocation is regarded as the process of workpiece machining,which mimics the thinking of the duty officer,applies the ranking theory,based on the ordering principle of first come first served of train and the size of the train weight,the corresponding algorithm steps are designed,by constraining conditions,the search space of the algorithm can be limited to the optional set of train and the optional set of track,match the weight of track and the weight of train,identify conflict of track and conflict of route,and constantly adjust the route,adjust track,which is a dynamic rolling process,and finally to the LanZhou Railway Station as an example,verify the applicability of the model and the designed algorithm.