Sensitivity Analysis of the Influence of Structural Parameters on Dynamic Behaviour of Highly Redundant Cable-Stayed Bridges

Table 2

Comparison of natural frequencies (Hz) between field tests and FE modeling.

Mode no.	FE frequencies (HZ)	Deck component of motions			Tower component of motions			Measured frequencies	Frequency error (%)
		Vertical	Lateral	Torsional	Longitudinal	Lateral	Torsional
V1	0.216	✓			✓			0.225	4.0
TL1	0.120		✓	✓		✓	✓	0.097	23.0
V2	0.270	✓			✓			0.263	2.7
TL2	0.320		✓	✓		✓	✓	0.248	29.0
V3	0.367	✓			✓			0.365	0.5
TL3	0.564		✓	✓		✓	✓	0.470	20.0

V indicates vertical modes; TL indicates torsional-lateral modes.