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Dynamic Properties

Several vertical bending and torsional modes of vibration (for the 16.2m span) have been identified in the frequency range of up to 25Hz. All identified vibration modes are lightly damped, with the first vertical bending mode being especially prone to excitation by human walking. Mode shapes, natural frequencies and damping ratios for five key vibration modes identified during modal testing are shown here (click on a mode to open an animation window).

v1.jpg
V1: 2.48Hz, 0.54%
V2
V2: 7.78Hz, 0.50%
V3
V3: 18.20Hz, 0.27%
T1
T1: 11.30Hz, 0.60%
T2
T2: 23.90Hz, 0.59%