Numerical Investigation of the Characteristics of the Dynamic Load Allowance in a Concrete-Filled Steel Tube Arch Bridge Subjected to Moving Vehicles

Table 2

Dynamic characteristics of the bridge.

Vibration modes	Calculated natural frequencies (Hz)	Tested natural frequencies (Hz)	Relative error (%)
1^st TBM	0.595	0.608	2.18
2^nd TBM	1.639	1.701	3.78
1^st VBM	1.598	1.602	0.25
2^nd VBM	2.301	2.362	2.65