Research Article
Experimental Research on Span Direction Effect of Vortex-Induced Vibration of Bridge Main Girder Based on Symmetric Algorithm
Table 2
Dynamic parameters of the first 3 modes of the brace model.
| | Mode shape | Frequency (Hz) | Damping (%) | | Theoretical value | Measured value | Error (%) | Measured value |
| | First order vertical frequency | 2.152 | 3.120 | 1.52 | 0.532 | | Second order vertical frequency | 5.845 | 5.652 | ā1.35 | 0.854 | | Third order vertical frequency | 8.685 | 8.669 | ā0.62 | 1.263 |
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