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Application of Time Delay Consideration on Bridge Vibration Control Method with Active Tendons

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Author(s): Lezin Seba MINSILI | He XIA

Journal: Leonardo Electronic Journal of Practices and Technologies
ISSN 1583-1078

Volume: 9;
Issue: 16;
Start page: 101;
Date: 2010;
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Keywords: Vibration Control | Bridge Tower | Active Tendon | Linearization | Feedback Gain Matrix

ABSTRACT
For many years bridge structures have been designed or constructed as passive structures that rely on their mass and solidity to resist external forces, while being incapable of adapting to the dynamics of an ever-changing environment. When the rigidity assumption is not met in particular for high-rise structures like bridge towers, a proper dynamic model should be established and conclusions made on the differential vibration of the tower when it is investigated out of the bridge system. The present work outlines a vibration control method by tendons on the tower of cable supported structures considering time delay effects, based on the discrete-time Linearization of the Feedback Gain Matrix. The efficiency of this vibration control method first proposed on the design process of a local bridge in Cameroon, is more compatible to the control of civil structures and is of great interest in accordance with simulation results.
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