上海地铁二号线东西延伸段、莘闽轻轨交通线，西安地铁等工程。系统探讨了城市轨道交通高架桥在选型上应考虑的方面和因索，并结合具体工程项目，对高架桥的梁部结构及墩柱的各种型式做了详细介绍，给出了选型的参考性方案。

Based on the engineering projects of the east and west extended sections of Shanghai No.2 metro line, the Xin-Min light-rail transport line and Xi'an metro line, etc. the main principles several aspects arid factors which should be considered on selection of the type of viaduct for urban rail transit are explored systematically in this paper. Combining with these particular engineering projects, different types of bridge structure and bridge pier for the viaducts are introduced in detail, and the proper selection schemes are recommended as reference.