Research Article
Improved Continuous Wavelet Transform for Modal Parameter Identification of Long-Span Bridges
Table 7
Model parameter identification results of Jinshajiang Bridge by CWT.
| | Order | Test frequency (Hz) | Results of CWT | Mode of vibration | | Frequency (Hz) | Damping ratio (%) | Error (%) |
| | 1 | 1.334 | 1.304 | 1.79 | 2.25 | Antisymmetric vertical bend −1 | | 2 | 1.838 | 1.780 | 2.01 | 3.16 | Symmetrical vertical bend −1 | | 3 | 2.452 | 2.407 | 1.45 | 1.84 | Symmetrical vertical bend −2 | | 4 | 3.023 | 2.893 | 0.64 | 4.30 | Antisymmetric vertical bend −2 | | 5 | 0.743 | 0.639 | 0.94 | 14.00 | Symmetrical lateral bend −1 | | 6 | 3.280 | 3.256 | 1.01 | 0.73 | Symmetrical torsion −1 |
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