Multi-Objective Linear-Programming Model and Its Algorithm for Car Flow Routing with Bidirectional Heavy and Empty Cars in Railway Network

On the basis of analyzing the previous papers published at home and abroad, and considering the special characteristic of Chinese railways, the paper presents a multi-objective programming model of car flow routing with bidirectional heavy and empty cars in a railway network, in which there are six objectives, twelve system constraints and two sets of non-negative constraints.The paper improves the GP-STEM algorithm and a case of study on the model is carried out.