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Importance of Longitudinal Stabilizing Cables in Dynamic Characteristics of Ting Kau Bridge

Yu, Ling & Chan, Tommy H.T. (2000) Importance of Longitudinal Stabilizing Cables in Dynamic Characteristics of Ting Kau Bridge. In Ko, J.M. & Xu, Y.L. (Eds.) Journal of Sound and Vibration, Elsevier, Hong Kong, pp. 467-474.

Abstract

In this paper, the influence of longitudinal stabilizing cables on the modal and dynamic response characteristics of the cable-stayed Ting Kau Bridge is studied based on a calibrated three-dimensional finite element model. A hybrid-element cable system is adopted in the model in which all the eight longitudinal stabilizing cables are modeled by multi-element cable system taking into account the sag and tension effect (geometric stiffness) while other cables are modeled by single-element system. The dynamic characteristics of the bridge are then evaluated for the cases with all eight longitudinal stabilizing cables, with only fewer longitudinal stabilizing cables, and without any longitudinal stabilizing cable respectively. It is found that the longitudinal stabilizing cables greatly influence the global dynamic characteristics of the bridge: (l) The natural frequency of the first global mode of the bridge increases from 0.141 Hz to 0.163Hz after installing the eight longitudinal stabilizing cables; (2) The stabilizing cables result in some global modes with strong modal interaction among the deck, lowers and cables; (3) The stabilizing cables participate significantly in modal motion of certain global modes, leading to the change of the modal participation factors in dynamic response evaluation.

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ID Code: 12849
Item Type: Conference Paper
Additional Information: For more information, please refer to the publisher's website (see hypertext link) or contact the author.
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Keywords: Cable, stayed bridge, three, tower systcm, longitudinal stabilizing cable, 3, d finite element model, modal property, participation factor
ISBN: 0080437923
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2000 Elsevier
Deposited On: 05 Mar 2008
Last Modified: 11 Aug 2011 04:34

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