Analysis of Span-Directional Coherence Function and Buffeting Response of a Long-Span Natural Gas Pipeline Suspension Bridge under a Turbulent Wind Field

Table 6

Modal test results of the full bridge wind tunnel test model.

Mode shapes	Real bridge frequency (Hz)	Required frequency (Hz)	Measured frequency (Hz)	Model damping ratio (%)
L-A-1	0.179	0.897	0.890	0.52
L-S-1	0.206	1.030	0.961	0.57
V-A-1	0.210	1.052	1.032	0.54
V-S-1	0.302	1.510	1.350	0.47
T-S-1	0.548	2.740	2.680	0.55