Research on the Method of Determining Reasonable Departure Range for Off-line Train

Based on analyzing the method of determining reasonable departure range for passenger train on existing railway,and adopting congruence theory,the paper researches deeply on the method of solving reasonable departure range for off-line train when passenger dedicated line sets rectangle synthetic maintenance window.The methods of determining reasonable departure range for single up-line train,single down-line train and multiple up and down line train are put forward.Then some cases are given to show the solving steps of these methods,which has a certain practical reference value for making passenger train plan and organizing daily passenger transportation.