Seismic Fragility Assessment of Base-Isolated Steel Water Storage Tank

Table 3

Linear regression analysis results.

Intensity measure	Convective displacement		Bearing displacement		Base shear force
	PGA	1.03	0.03	0.86	0.07	0.86	0.07
PGD	0.57	0.71	0.52	0.66	0.52	0.66
PGV	0.61	0.66	0.46	0.74	0.46	0.74
CAV	0.68	0.58	0.54	0.64	0.54	0.64
Ia	0.86	0.33	0.67	0.43	0.67	0.43
Sa(T2)	1.05	0.01	0.89	0.02	0.89	0.02

Note: is standard deviation; is coefficient of determination; CAV is Cumulative Absolute Velocity; Ia is Arias Intensity.