Abstract: In the context of rapid development of traffic integration among urban agglomeration, a calculation model is proposed to calculate transport capacity of intercity railway lines. Firstly, on the basis of analyzing the characteristics of intercity railway, an integer linear programming based calculation model is formulated. Similar to the average minimum headway method, the proposed model calculates the total occupied time in train timetable by combining two adjacent trains into an operation train group. The objective of the model is to maximize the total number of operation train groups, where the total occupied time of train in train timetable is constrained to a certain range. Second, based on the real data of the Beijing-Tianjin intercity railway, numerical examples are presented to illustrate the effectiveness of the proposed calculation model, and verify the superiority over the traditional calculation method. The model greatly simplifies the calculation steps of transport capacity of the intercity railway, which makes the calculation more efficient. Moreover, it can contribute to improve the transport capacity of intercity railway and its operation services.

Key words: operation train group; intercity railway; transport capacity; integer linearprogramming