Abstract
In this paper, wind-induced vibration control of a single column tower of a cable-stayed bridge with a multi-stage pendulum mass damper (MSPMD) is investigated. Special attention is given to overcoming space limitations for installing the control device in the tower and the effect of varying natural frequency of the towers during construction. First, the finite element model of the bridge during its construction and the basic equation of motion of the MSPMD are introduced. The equation of motion of the bridge with the MSPMD under along-wind excitation is then established. Finally, a numerical simulation and parametric study are conducted to assess the effectiveness of the control system for reducing the wind-induced vibration of the bridge towers during construction. The numerical simulation results show that the MSPMD is practical and effective for reducing the along-wind response of the single column tower, can be installed in a small area of the tower, and complies with the time-variant characteristics of the bridge during its entire construction stage.
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Sponsored by: Area Strategic Development Program in Structural Control and Intelligent Building from The Hong Kong Polytechnic University, and National Natural Science Foundation of China Under Grant No. 50408011
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Guo, A., Xu, Y. & Li, H. Dynamic performance of cable-stayed bridge tower with multi-stage pendulum mass damper under wind excitations — I: Theory. Earthq. Engin. Engin. Vib. 6, 295–306 (2007). https://doi.org/10.1007/s11803-007-0747-x
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DOI: https://doi.org/10.1007/s11803-007-0747-x