城市轨道交通分段建设顺序综合评价模型

修建顺序对城市轨道交通线网的形成和完善非常重要。以考虑资金收益率后影响交通量额外增加的旅行时间所创造的效益总和最小为目标，从轨道交通建设对现有交通的影响入手，在修建资金约束下构建了城市轨道交通不同路段修建顺序模型，并通过算例说明了模型的应用。研究结果表明，每年的投资额对于最终的修建顺序有决定性影响，若投资额不当可能会出现无解情况。

Comprehensive Evaluation Model of Multi-Step Construction of Urban Rail Transit

Construction order is very important for forming and perfecting urban rail transit （URT） net-work. The comprehensive evaluation model of multi-step construction of URT is built. The objective func-tion is minimum sum of the capital yield which is created from the additional travel time affected by the construction of URT. The constraint is subject to the capital. Numerical examples are given to illustrate the application of the model. The conclusion shows that the annual investment has a decisive influence on the final building order. There would be no solution if the investment scheme is improper.