Distribution of electric multiple unit maintenance base of high-speed railway

The scale and distribution of electric multiple unit maintenance base are important to improve the efficiency and capacity of high-speed railway network, but it is less studied in previous papers. On the basis of studying foreign experiences of distribution of electric multiple unit maintenance base, and examination and repair method, the paper analyzes the characteristics and affecting factors of maintenance base in China. With analytic hierarchy process, a comprehensive evaluation model is established for selecting candidate cities as locations of maintenance base. The result is obtained with expert scoring method. With the result, a multi-objective linear programming model is constructed for solving the problem of distribution of maintenance bases .The model is solved with some hypothetical data and some reasonable conclusions are obtained. Therefore, the method for determining the scale and distribution of electric multiple unit maintenance bases is applicable.