Experimental Research on Damping Effect of Double-Layer Tuned Mass Damper for High-Rise Structure

Table 9

Decreasing ratios of the model with DTMD under NFPT ground motions.

Parameters	RSN	Peak (g)	Connection cases			Decreasing ratio (%)
			I	II	III	I	Average	II	Average	III	Average
ADR (mm)	2457	0.35	4.31	4.27	4.23	7.9	8.9	8.8	11.3	9.6	12.6
	900		7.23	6.95	6.80	10.8		14.2		16.1
	6911		5.53	5.37	5.30	8.1		10.8		12.0
	2457	1.00	7.31	6.99	6.65	6.2	10.4	10.2	13.7	14.6	17.3
	900		15.18	14.46	13.81	15.2		19.2		22.8
	6911		8.96	8.77	8.48	9.7		11.7		14.6
RMS-ADR (mm)	2457	0.35	1.49	1.46	1.45	7.8	9.1	9.6	11.5	10.3	13.0
	900		2.36	2.31	2.23	10.5		12.6		15.5
	6911		1.85	1.78	1.76	8.9		12.4		13.1
	2457	1.00	3.32	3.26	3.17	11.3	12.9	12.8	16.9	15.1	20.4
	900		4.75	4.39	4.20	15.1		21.6		24.9
	6911		4.01	3.82	3.60	12.3		16.3		21.2
AR (m/s^2)	2457	0.35	2.93	3.03	2.79	2.7	8.3	-0.6	8.7	7.1	12.4
	900		4.51	4.39	4.26	12.0		14.5		16.9
	6911		3.86	3.78	3.74	10.2		12.1		13.1
	2457	1.00	6.38	6.29	5.97	8.9	10.9	10.3	15.1	14.8	19.0
	900		10.50	9.73	9.05	13.0		19.4		25.0
	6911		9.08	8.60	8.45	10.9		15.6		17.1
SR (με)	2457	0.35	193.21	190.85	187.91	7.1	8.8	8.2	10.3	9.6	12.7
	900		346.53	339.29	325.85	10.6		12.5		15.9
	6911		239.11	235.30	229.45	8.8		10.3		12.5
	2457	1.00	745.11	717.58	721.65	11.7	12.8	14.9	16.2	14.5	17.5
	900		1143.42	1055.55	1037.37	14.2		20.8		22.1
	6911		660.44	656.81	634.22	12.5		13.0		16.0