Abstract:The Chizhou Changjiang River Bridge is a cable-stayed bridge with a main span of 828m. In this bridge, the cables are anchored in groups to the steel beams between the pylons, which is firstly used in China. The steel box girders are constructed by the Cantilever Assembling Method while the PC box girders of side span are constructed by the Cast-in-place Method. Aiming at the two characteristics of the bridge, those are the new type of anchoring system and the asymmetrical construction of the main beam, the Geometric Control Method is used for construction control. Besides, the key control technique such as pylon offset and pre-lift control, pylon stress control, steel cross-beam pre-lift control, and main girder alignment control are adopted. After the completion of the bridge, the pylon off set and stress, the main girder alignment, as well as the cable force are measured and compared with the theoretical values. The results show that all the measured values are in good agreement with the theoretical ones, meeting the specification requirements, which indicates that the construction control of the bridge works well.
