A Displacement-Based Design Method for Seismic Retrofit of RC Buildings Using Dissipative Braces

Table 12

Preliminary design. Solution 2: steel hysteretic dampers (HBF).

(a) Distribution of HBF along the height, direction x-x

Floor	Dissipative Braces	Steel Brace				HBF type
			mm^2	mm	kN/mm		kN	mm	kN/mm	mm	kN/mm
1	(1-2-3-4)	Φ193.7/20	10908	2.035	1126	420/40	418	0.58	22.35	2.62	21.915
2	(1-2-3-4)	Φ193.7/14.2	8004	2.29	734	300/40	300	0.575	15.90	2.87	15.563
3	(1-2-3-4)	Φ168.3/10	4981	2.44	428	240/40	238	0.575	12.45	3.02	12.098

(b) Distribution of HBF along the height, direction y-y

Floor	Dissipative Braces	Steel Brace				HBF type
			mm^2	mm	kN/mm		kN	mm	kN/mm	mm	kN/mm
1	(5-6-8)	Φ193.7/16	8928	2.71	692	420/40	418	0.58	22.35	3.29	21.651
2	(5-6-8)	Φ193.7/12.5	7112	2.96	505	300/40	300	0.575	15.90	3.54	15.414
3	(5-6-8)	Φ168.3/8.8	4407	3.045	304	240/40	238	0.575	12.45	3.62	11.960
1	(7)	Φ193.7/17.5	9682	2.42	840	420/40	418	0.58	22.35	3.00	21.771
2	(7)	Φ193.7/12.5	7112	2.655	562	300/40	300	0.575	15.90	3.23	15.463
3	(7)	Φ168.3/8.8	4407	2.73	339	240/40	238	0.575	12.45	3.31	12.009