An Adaptive Model Order Reduction Method Based on the Damage Evolution for Nonlinear Seismic Analysis

Table 1

Story-drift ratio errors (%).

Ground motion intensity (gal)	Seismic input records
	El Centro	Kobe	Northridge	Parkfield
100	1.70	2.73	3.47	2.26
200	2.76	5.15	1.46	3.96
300	1.59	3.23	1.46	2.57
400	2.60	0.88	1.12	2.47
500	2.07	1.13	1.64	1.62