Optimal Design of Viscoelastic Dampers in Frame Structures considering Soil-Structure Interaction Effect

Table 1

Characteristics of structures.

Story	10 floors		20 floors
	Stiffness (MN/m)	Period	Stiffness (MN/m)	Period
1	537	0.719	1280	1.030
2	473	0.265	1280	0.389
3	435	0.164	970	0.237
4	408	0.121	923	0.172
5	404	0.098	846	0.135
6	320	0.083	792	0.111
7	298	0.073	748	0.096
8	289	0.067	710	0.085
9	244	0.060	710	0.076
10	191	0.054	680	0.070
11	—	—	612	0.066
12	—	—	577	0.061
13	—	—	543	0.057
14	—	—	485	0.054
15	—	—	441	0.051
16	—	—	413	0.048
17	—	—	409	0.045
18	—	—	320	0.042
19	—	—	298	0.039
20	—	—	289	0.035