Vibration Frequencies Extraction of the Forth Road Bridge Using High Sampling GPS Data

Table 3

Vibration frequencies extracted from height GPS measurements ( direction of BCS).

Situations	Extracted frequencies (Hz)				Mean wind speed (km/h)
Ambient circulation loading	0.092	0.103	0.207	0.270	—
Strong wind (abrupt wind speed change)	0.095	0.102	0.205	0.268	—
	0.098	0.104	0.204	0.270	—
Two 40 t lorries passing	0.096	0.103	0.202	0.268	—