Wuhu Second Bridge: Development of Stayed Cable Anchorage System and Application of Structural Innovations

Based on the design and construction of the second Yangtze River bridge in Wuhu (hereinafter referred to as Wuhu Second Bridge), this article introduces the structural system of a full-floating cable-stayed bridge with four cable planes, a single-column tower and separated steel box girders. A series of innovative structural measures are taken to improve the safety and economy of the bridge, such as the looping stayed cable anchorage system, the diagonal damping constraint system, and the externally prestressed segmentally assembled box girders used in the approach bridge. In addition, finite element analysis software is used to study and analyse the mechanical characteristics of the bridge. Also, the reliability of the structural anchorage system and damping constraint system is verified. Finally, the construction technology adopted for Wuhu Second Bridge is briefly described.