Effectiveness of In-Service Dampers over Long-Term Operation for Cable Vibration Suppression: A Study Based on Field Testing

Abstract In order to explore the operation mechanism of dampers used on super long-span bridges, the characteristics of dampers in long-term operation are studied through field tests. Firstly, viscous damper and liquid leakage MR damper are selected to test the influence of fluid connecting rod on i...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 2158; no. 1; pp. 12040 - 12049
Main Authors Zhou, P, Liu, M, Kong, WM, Xu, YM, Li, H
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2022
Subjects
cable vibrations
cable-stayed bridges
Cables
Connecting rods
control performance
Dampers
Damping ratio
Field tests
Leakage
long-term operation
Modal damping
Physics
Vibration analysis
Vibration control
Vibration isolators
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Summary:Abstract In order to explore the operation mechanism of dampers used on super long-span bridges, the characteristics of dampers in long-term operation are studied through field tests. Firstly, viscous damper and liquid leakage MR damper are selected to test the influence of fluid connecting rod on its damping force; Then, wireless and wired sensors are used to collect the acceleration response of cables with viscous dampers and MR dampers. Finally, the vibration characteristics of the cable are analyzed, and the control performance of the selected damper is evaluated. The results show that the high-order multi-modal vibration of the cable will occur in the range of 2-6hz whether the damper is installed or not. In addition, fluid leakage may reduce the additional modal damping ratio achieved by MR damper.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2158/1/012040