Experimental Assessment of a Skyhook Semiactive Strategy for Seismic Vibration Control of a Steel Structure

Table 2

Floor spectral accelerations for selected periods of vibration of nonstructural components, corresponding to the cases of a component firmly fixed to the slab, a partition wall, and an element in resonance with the first and the second frequencies.

Case		Spectral 1st floor acceleration			Spectral 2nd floor acceleration
		Uncontrolled	SH 1 A	SH 2 A	Uncontrolled	SH 1 A	SH 2 A
(a)	0.00	0.67	0.45	0.97	1.11	0.54	0.91
(b)	0.02	0.72	0.71	1.63	1.21	0.80	1.29
(c)	0.24–0.29	17.00	2.30	2.70	33.00	5.10	7.00
(d)	0.08–0.09	4.70	4.10	5.00	3.60	2.40	2.80