A wideband multiple tuned mass dampers (MTMD) system has been developed for reducing the multiple resonant responses of
continuous truss bridges to moving train loads. This system is composed of several MTMD subsystems, each of which consists of
one set of TMD units covering a specific frequency bandwidth, but with its medium tuned to one of the first few resonant frequencies
of the bridge. Using the minimum–maximum amplitude criterion and enforcing the resonant peaks of interest to be equal
to each other, one can determine the mass allocated for each subsystem, as well as the optimum parameters. If there is a concern
over detuning of the target frequency with the structural frequency, it is suggested that the bandwidth of the MTMD system be
widened accordingly. In this study, the train-induced response of a truss bridge installed with the wideband MTMD system was
analyzed, by which the robustness of the proposed method in vibration reduction was demonstrated.
# 2004 Elsevier Ltd. All rights reserved.
A wideband multiple tuned mass dampers (MTMD) system has been developed for reducing the multiple resonant responses ofcontinuous truss bridges to moving train loads. This system is composed of several MTMD subsystems, each of which consists ofone set of TMD units covering a specific frequency bandwidth, but with its medium tuned to one of the first few resonant frequenciesof the bridge. Using the minimum–maximum amplitude criterion and enforcing the resonant peaks of interest to be equalto each other, one can determine the mass allocated for each subsystem, as well as the optimum parameters. If there is a concernover detuning of the target frequency with the structural frequency, it is suggested that the bandwidth of the MTMD system bewidened accordingly. In this study, the train-induced response of a truss bridge installed with the wideband MTMD system wasanalyzed, by which the robustness of the proposed method in vibration reduction was demonstrated.# 2004 Elsevier Ltd. All rights reserved.
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