Fig. 7
From: Attenuation of pedestrian-induced vibrations in girder footbridges using tuned-mass dampers
Simply-supported prestressed concrete (section type 1) footbridge with a 22.5 m span under pedestrian densities of 0.6 ped/m2 for commuting activities: a peak vertical accelerations at mid-span when a TMD (μ = 0.05) is located at different positions along the length of the bridge, b Fourier amplitude spectrum of the peak vertical accelerations at mid-span when a TMD (μ = 0.05) located at 0.35 L and 0.5 L and when no supplemental damping is implemented