Mitigating the Effects of Wind on Suspension Bridge Catwalks
Publication: Journal of Bridge Engineering
Volume 18, Issue 7
Abstract
In the current study, wind tunnel tests and buffeting analyses were conducted for a catwalk structure of a suspension bridge under turbulent winds. From the wind tunnel tests, it was found that the Reynolds number effects on the aerostatic coefficients were negligible for the catwalk floor systems. Simple design formulas were proposed to estimate the aerostatic coefficients of catwalks with various solidity ratios and angles of attack. The buffeting analysis results revealed that tying the catwalk to an erecting main cable may be an effective structural countermeasure to reduce the lateral displacements of the catwalk. Stay ropes fastening the catwalk and bridge tower were also found to be effective at alleviating the lateral displacements.
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Acknowledgments
This research was supported by the grant 09CCTI-A052531 from the Ministry of Land, Transport, and Maritime Affairs of the Korean government. The authors also gratefully acknowledge the KREONET service provided by the Korea Institute of Science and Technology Information.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 18 • Issue 7 • July 2013
Pages: 624 - 632
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Sep 29, 2011
Accepted: Apr 24, 2012
Published online: May 4, 2012
Published in print: Jul 1, 2013
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