Attenuation of pedestrian-induced vibrations in girder footbridges using tuned-mass dampers

Advances in Bridge Engineering

Table 8 Tuned mass damper properties according the span length under pedestrian densities of 0.6 ped/m² for commuting and leisure traffic based on Fig. 14. For those cases in which the accelerations do not satisfy the comfort criterion, the value of the TMD efficiency is not included (−)

Section Type (Table 1)	Span length (m)	Commuting activities					Span length (m)	Leisure activities
Section Type (Table 1)	Span length (m)	Mass ratio	Length (mm)	Width (mm)	Height (mm)	TMD efficiency (%)	Span length (m)	Mass ratio	Length (mm)	Width (mm)	Height (mm)	TMD efficiency (%)
2	7.5–14.0	0.01	600	560	275	75	5.0	0.01	600	560	275	78
2	29.0	0.03	1020	200	905	72	–	–	–	–	–	–
3	10.0	0.04	1020	200	905	69	27.5	0.03	1020	200	905	77
3	22.5	0.05	1420	240	1005	78	–	–	–	–	–	–
4	17.5	0.06	1220	200	935	71	25.0	0.04	1420	240	1005	69
5	28.5	0.06	2000	1080	325	77	32.5	0.05	1600	930	325	72
6	12.5	0.05	1220	200	935	72	17.5	0.03	800	556	325	75
6	32.5	0.07	2000	1410	325	69	37.5	0.06	2000	1080	325	72
7	14.0	0.06	1220	200	935	74	17.5	0.04	1220	200	935	80
8	5.0	0.03	600	560	275	72	7.5	0.05	600	560	275	79
	10.0	0.07	1250	930	325	78	12.5	0.05	1000	780	325	72
	25.0	0.07	2000	1080	325	75	17.5	0.04	800	556	325	70
9	5.0	0.04	600	560	275	–	6.0	0.05	600	560	275
	7.5	0.08	1250	930	325	–	9.0	0.06	1000	610	325
	10.0–12.5	0.03	1000	610	325	–	17.5	0.03	1000	750	325
	15.0	0.07	1000	750	325	–	20.0	0.06	2000	1410	325
	17.5	0.09	2780	1530	325	–	22.5–25.0	0.03–0.04	1250	930	325
	20.0–22.5-25.0	0.04	1250	930	325	–
10	5.0	0.08	1600	930	325	–	5.0	0.06	1000	610	325	–
	7.5–12.5	0.06	1000	610	325	–	12.5	0.05	800	556	325	–
	9.0	0.07	2780	1530	325	–	15.0	0.04	2000	1410	325	–
	10.0–21.0	0.06	2000	930	325	–	17.5	0.04	2000	930	325	–
	15.0–17.5-20.0	0.07	1000	780	325	–	20.0	0.05	2000	930	325	–
	22.5	0.06	2000	1410	325	–	23.5–25.0	0.06–0.05	1250	930	325	–
	24.0–25.0	0.07–0.06	1250	930	325	–