Traveling Wave Resonance and Simplified Analysis Method for Long-Span Symmetrical Cable-Stayed Bridges under Seismic Traveling Wave Excitation

Table 1

Frequencies (Hz) and characteristics of the first 14 modes of the cable-stayed bridge.

Order	Frequency	Characteristic
1	0.0656	Longitudinal floating
2	0.1004	Transverse symmetric bending of deck beam
3	0.1779	Vertical symmetric bending of deck beam
4	0.2195	Vertical antisymmetric bending of deck beam
5	0.2819	Transverse antisymmetric bending of deck beam
6	0.3083	Vertical symmetric bending of deck beam + longitudinal bending of towers in opposite direction
7	0.3718	Vertical antisymmetric bending of deck beam + longitudinal bending of towers in the same direction
8	0.4175	Vertical symmetric bending of deck beam + longitudinal bending of towers in opposite direction
9	0.4663	Transverse bending of towers in the same direction
10	0.4678	Transverse bending of towers in opposite direction
11	0.4692	Vertical antisymmetric bending of deck beam + longitudinal bending of towers in the same direction
12	0.5066	Vertical symmetric bending of deck beam + longitudinal bending of towers in opposite direction
13	0.5214	Torsion and transverse symmetric bending of deck beam
14	0.5534	Vertical antisymmetric bending of deck beam