一、引言 随着我国的城市建设步入理性发展的阶段,交通基础设施的规划工作越来越显示出它的重要性。而在大城市中,缓解未来城市交通问题的重要手段是建设以快速轨道交通为骨干的城市客运系统。快速轨道交通方式无 I. INTRODUCTION As China’s urban construction has entered a stage of rational development, the planning of the transportation infrastructure has increasingly shown its importance. In the big cities, an important means of alleviating the urban traffic problems in the future is to build an urban passenger transport system with rapid rail transit as its backbone. Fast track mode no