This paper presents the design method for a long span concrete continuous girder bridge with precast segments , mixed arrangement of internal and external tendons , and to be constructed with cantilever erection by overhead launching gantry , and also discusses several issues of the type of the bridge in need of special considerations in aspect of design calculations and constructional design 摘要介绍采用节段预制架桥机悬拼施工，采用体内、体外混合配束的大跨度混凝土连续梁侨的设计方法，对设计计算及在构造设计上需要特殊考虑的一些问题进行了探讨。
