Static and Dynamic Mechanical Properties of Long-Span Cable-Stayed Bridges Using CFRP Cables

Table 6

Dynamic characteristics of CFRP cable-stayed bridge with different structural systems.

Full-floating system		Half-floating system		Rigid-frame system		Tower-beam elastic restraint system		Modal characteristics
Order	Frequency (Hz)	Order	Frequency (Hz)	Order	Frequency (Hz)	Order	Frequency (Hz)
1	0.0731	1	0.0731			1	0.1067	Longitudinal floating + vertical bending of pylon
2	0.1291	2	0.1295	1	0.1365	2	0.1292	First lateral bending
3	0.2046	3	0.2046	2	0.2050	3	0.2046	First vertical bending
13	0.5625	13	0.5636	15	0.6650	13	0.5625	First torsion + lateral bending
15	0.5949	15	0.5984	12	0.5853	15	0.5949	First torsion