Measurement and Analysis of Dynamic Properties of NanPu Rainbow Bridge

摘要

NanPu Rainbow Bridge is a typical Cable –Stayed Bridge with two arches of Concrete Filled Steel Tube. In this paper, base on the environmental and impact excitation methods, the vertical self- vibration frequencies and damping ratio of the bridge were measured, which was very useful for structural dynamic analysis. On the other hand, Finite Element Method program is used to analyze the dynamic properties of the bridge. The measurement data is consistent with the analysis results, showing the analysis model is rational and accurate.