Evaluation of Live-Load Lateral Flange Bending Distribution for a Horizontally Curved I-Girder Bridge
Publication: Journal of Bridge Engineering
Volume 13, Issue 5
Abstract
This paper focuses on levels of live-load lateral bending moment (bimoment) distribution in a horizontally curved steel I-girder bridge. Work centered primarily on the examination of (1) data from field testing of an in-service horizontally curved steel I-girder bridge and (2) results from a three-dimensional numerical model. Experimental data sets were used for calibration of the numerical model and the calibrated model was then used to examine the accuracy of lateral bending distribution factor equations presented in the 1993 Edition of the (AASHTO) Guide Specifications for Horizontally Curved Bridges. It is of interest to examine these equations for potential use in preliminary design even though they have been eliminated during recent AASHTO specification modifications that addressed curved bridge analysis, the 2005 Interims to the AASHTO LRFD Bridge Design Specifications. In addition, they were developed using idealized computer models and small-scale laboratory testing with very few field tests of in-service full-scale curved steel bridges conducted to support or refute their use. Results from such experimental and numerical studies are presented and discussed herein.
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Acknowledgments
The writers would like to acknowledge PennDOT and FHwA for providing assistance during the project.
References
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 13 • Issue 5 • September 2008
Pages: 501 - 510
Copyright
© 2008 ASCE.
History
Received: Dec 5, 2006
Accepted: Jan 9, 2008
Published online: Sep 1, 2008
Published in print: Sep 2008
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