Wind-induced vibration control of bridges using liquid column damper |
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| Authors: | Suduo Xue J M Ko Y L Xu |
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| Institution: | 1. College of Architecture and Civil Engineering, Beijing University ofTechnology Beijing 100022 China
2. Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong |
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| Abstract: | The potential application of tuned liquid column damper (TLCD) for suppressing wind-induced vibration of long span bridges
is explored in this paper. By installing the TLCD in the bridge deck, a mathematical model for the bridge-TLCD system is established.
The governing equations of the system are developed by considering all three displacement components of the deck in vertical,
lateral, and torsional vibrations, in which the interactions between the bridge deck, the TLCD, the aeroelastic forces, and
the aerodynamic forces are fully reflected. Both buffeting and flutter analyses are carried out. The buffeting analysis is
performed through random vibration approach, and a critical flutter condition is identified from flutter analysis. A numerical
example is presented to demonstrate the control effectiveness of the damper and it is shown that the TLCD can be an effective
device for suppressing wind-induced vibration of long span bridges, either for reducing the buffeting response or increasing
the critical flutter wind velocity of the bridge. |
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| Keywords: | long span bridge bridge deck wind-induced vibration vibration control flutter buffeting tuned liquid column damper TLCD-bridge interaction mathematical model |
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