Finite Element Model Updating of Steel Arch Bridge Based on First-Order Mode Test Data

Table 1

Comparison of first-order frequencies of before and after updating with the measuring value.

Measuring value	Before updating		After updating
Frequency (Hz)	Frequency (Hz)	Difference (Hz)	Frequency (Hz)	Difference (Hz)
3.369	3.796	0.427	3.368	0.001