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Received: 21 April 2019 Accepted: 28 July 2019 The completion of passenger-dedicated lines (PDLs) has released the transport capacity of many existing railways, making room for railway freight transport. To make full use of the released capacity, this paper puts forward an integer linear programming model based on the linear correlation between the number of trains and the demand increment, and solves the model with IBM ILOG CPLEX Optimization Studio 12.4. The proposed model was successfully applied to prepare a suitable operation plan of two types of freight block trains (FBTs) in a railway network with multiple routes and nodes. To further increase the transport profit, two only adjustable parameters, namely, the capacity of railway section and the number of trains, were subjected to sensitivity analysis. Through the analysis, the author determined which railway sections should expand their capacities and which way stations should increase the number of FBTs.

Operation Planning for Freight Block Trains Using Released Transport Capacity of Existing Railways