Seismic Performance of Midstory Isolated Structures under Near-Field Pulse-Like Ground Motion and Limiting Deformation of Isolation Layers

Table 4

Comparison of plastic interstory drifts of midstory isolations with and without protective system.

Story; number	Plastic interstory drifts without protective system/cm					Plastic interstory drifts with protective system/cm
	HE04230	CHY101W	CHY029N	HDLT352	Limitation value (/50)	HE04230	CHY101W	CHY029N	HDLT352	Limitation value (/50)
10	0.4	0.5	0.3	0.2	6.6	0.7	0.6	0.4	0.3	6.6
9	0.6	0.7	0.5	0.4	6.6	1.0	0.9	0.5	0.4	6.6
8	0.8	0.9	0.6	0.5	6.6	1.4	1.2	0.7	0.5	6.6
7	1.0	1.2	0.7	0.6	6.6	1.8	1.6	0.8	0.7	6.6
6	1.3	1.5	0.8	0.6	6.6	2.3	2.0	1.0	0.8	6.6
5	1.6	1.7	0.9	0.6	6.6	2.7	2.4	1.1	0.9	6.6
4	1.7	1.8	1.0	0.6	6.6	2.8	2.6	1.1	0.9	6.6
3	1.4	1.5	0.8	0.5	6.6	2.4	2.2	0.9	0.7	6.6
Isolation layer	50.9	49.5	32.6	16.1	38.5	35.0	35.6	21.2	15.0	38.5
2	1.5	1.4	0.9	1.0	3.3 (/100)	1.9	2.1	1.2	1.0	3.3 (/100)
1	1.2	1.1	0.8	0.8	3.3 (/100)	1.5	1.8	1.0	0.9	3.3 (/100)

Note: denotes the height of the relevant story.