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Table 1 Structural dynamic characteristic of the first 20 modes of the bridge

From: Parametric analysis of the dynamic characteristics of a long-span three-tower self-anchored suspension bridge with a composite girder

Order of mode Frequency (Hz) Mode description Order of mode Frequency (Hz) Mode description
1 0.09998 BD-LG 11 0.52824 BD-3-SY-V
2 0.16203 BD-1-ASY-V 12 0.56296 MC-SY-L
3 0.27797 BD-2-ASY-V 13 0.59849 MC-ASY-L
4 0.28202 BD-1-SY-V 14 0.61127 MC-ASY-L
5 0.39176 BD-2-SY-V 15 0.61130 MC-SY-L
6 0.44303 BD-1-SY-T + BT-SY-L 16 0.61215 MC-SY-L
7 0.44715 BD-1-ASY-T + BT-ASY-L 17 0.61229 MC-ASY-L
8 0.45514 BD-3-ASY-V 18 0.62703 BD-4-ASY-V
9 0.47698 MC-SY-L 19 0.65046 MC-ASY-L
10 0.49670 MC-ASY-L 20 0.65165 MC-L
  1. Note: BD Bridge deck, BT Bridge tower, MC Main cable, LG Longitudinal, V Vertical, L Lateral, T Torsional, SY Symmetric, ASY Anti-symmetric