Dynamic Analysis of Curved Continuous Multiple-Box Girder Bridges
Publication: Journal of Bridge Engineering
Volume 12, Issue 2
Abstract
The use of horizontally curved composite multiple-box girder bridges in modern highway systems is quite suitable in resisting torsional and warping effects induced by highway curvatures. Bridge users react adversely to vibrations of a bridge and especially where torsional modes dominate. In this paper, continuous curved composite multiple-box girder bridges are analyzed, using the finite-element method, to evaluate their natural frequencies and mode shapes. Experimental tests are conducted on two continuous twin-box girder bridge models of different curvatures to verify and substantiate the finite-element model. Empirical expressions are deduced from these results to evaluate the fundamental frequency for such bridges. The parameters considered herein are the span length, number of lanes, number of boxes, span-to-radius of curvature ratio, span-to-depth ratio, end-diaphragm thickness, number of cross bracings, and number of spans.
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Acknowledgments
This research was supported by the Natural Sciences and Engineering Council of Canada.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 12 • Issue 2 • March 2007
Pages: 184 - 193
Copyright
© 2007 ASCE.
History
Received: Jul 7, 2005
Accepted: Oct 25, 2005
Published online: Mar 1, 2007
Published in print: Mar 2007
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