Sequential Ground Motion Effects on the Behavior of a Base-Isolated RCC Building

Table 1

Detailed information of selected seismic sequences.

Ground; motion	Time	Event	Magnitude; (Ms)	Vs30 (m/s)	Component	Input direction	PGA (g)
Chi-Chi; Station: CWB 99999 TCU075	09/20/99	Mainshock	7.62	573	E		0.33
					N		0.26
	09/20/99	Aftershock-1	6.2	573	E		0.22
					N		0.15
	09/25/99	Aftershock-2	5.9	573	E		0.11
					N		0.06
Irpinia; Station: Calitri	1980/11/23 19:34	Mainshock	6.9	600	000		0.132
					270		0.176
	1980/11/23 19:35	Aftershock	6.2	600	000		0.177
					270		0.165
Whittier; Station: 24399 Mt Wilson - CIT; Seis Sta	10/01/87	Mainshock	6.0	821.7	000		0.123
					090		0.186
	10/04/87	Aftershock	5.3	821.7	000		0.158
					090		0.142
Irpinia; Station: Rionero In Vulture	1980/11/23 19:34	Mainshock	6.9	530	000		0.106
					270		0.104
	1980/11/23 19:35	Aftershock	6.2	530	000		0.099
					270		0.096
Coalinga; Station: 1703 Sulphur Baths	1983/07/22 02:39	Mainshock	5.77	617.4	000		0.141
					090		0.127
	1983/07/25 22:31	Aftershock	5.21	617.4	000		0.152
					090		0.23
Mammoth Lakes; Station: 54301 Mammoth Lakes H. S.	1980/05/25 16:34	Mainshock	6.06	370.8	270		0.321
					360		0.239
	1980/05/25 16:49	Aftershock	5.69	370.8	270		0.39
					360		0.441
Mammoth Lakes; Station: 42 Convict Lakes (CON)	1980/05/31 15:16	Mainshock	4.8	472.2	180		0.196
					270		0.206
	1980/06/11 04:41	Aftershock	4.85	472.2	180		0.191
					270		0.183
Whittier; Station: 24461 Alhambra, Fremont Sch	10/01/87	Mainshock	6.0	550	180		0.333
					270		0.414
	10/04/87	Aftershock	5.3	550	180		0.174
					270		0.178
Whittier; Station: 24402 Altadena - Eaton Canyon	10/01/87	Mainshock	6.0	375.2	000		0.299
					090		0.151
	10/04/87	Aftershock	5.3	375.2	000		0.264
					090		0.199
Whittier; Station: 24401 San Marino, SW Academy	10/01/87	Mainshock	6.0	379.4	270		0.128
					360		0.204
	10/04/87	Aftershock	5.3	379.4	270		0.156
					360		0.212