Performance-Based Seismic Fragility and Risk Assessment of Five-Span Continuous Rigid Frame Bridges

Table 3

Multiorder oscillation modal information of Wolonggou Bridge.

Modal order	Period (s)	Frequency		Relative value (%)
		Theoretical values (Hz)	Experimental values (Hz)
First order	5.368	0.186	0.192	3.23
Second order	4.037	0.248	0.261	5.24
Third order	3.217	0.311	0.319	2.57
Fourth order	3.190	0.313	0.327	4.47
Fifth order	2.149	0.465	0.493	6.02
Sixth order	1.237	0.808	0.836	3.46