THE ALIGNMENT MONITORING AND SIMULATED STRUCTURALANALYSIS OF THE FOURTH XIANGJIANG BRIDGE IN XIANGTAN

摘要

The design and construction of the Fourth Xiangjiang Bridge in Xiangtan, which is the first cable-stayed flying-bird concrete-filled steel tubular arch bridge, are greatly different from other bridges, is greatly different from bridges. The alignment monitoring system is introduced in this paper, considering the feature of the construction of the bridge. Major concerns includes: (1) the erection of the survey control system and the selection of the measuring parameters; (2) analysis on alignment monitoring target under different construction stages; (3) Structural calculation about alignment control and parameter identification, that is simulation analysis with finite element method for the whole construction process.