Earthquake Protection of Existing Structures with Limited Seismic Joint: Base Isolation with Supplemental Damping versus Rotational Inertia

Table 2

Seismic retrofitting strategies analyzed and compared in this study and optimal parameters.

Seismic retrofitting label	Seismic protection strategy		(s)		(rad/s)
#1	Conventional BIS	0.1	2.0	—	—
#2	BIS with rotational inertia (TMDI)	0.1	2.0	0.256	2.502
#3	BIS with TMD	0.1	2.0	0.135	2.713
#4	BIS with supplemental damping	0.3	2.0	—	—
#5	BIS with supplemental damping	0.4	2.0	—	—