Buffeting AnalysisStatic deformation by time-averaged wind speed and buffeting response by fluctuating wind speed are computed in the erection / complete stage of the bridge. Aerodynamic data, structural data, dynamic data and wind environmental characteristics for a bridge are used in buffeting analysis.
▣ Buffeting response of a bridge in the erection / completed stage ▣ Buffeting response of a bridge in various wind directions should be considered ▣ Vibration control methods such as wind cable and TMD should be considered |
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Flutter AnalysisMulti-mode flutter analysis is generally used as an analytic method to calculate the critical wind speed of the flutter. Flutter derivatives, natural frequency, and mode shapes from eigenvalue analysis are used as input data. Flutter derivatives from force vibration test are required for flutter analysis.
▣ Flutter onset speeds of a bridge in the erection and completed stage ▣ Various combination of bridge modes should be considered |