Proposed Revisions to AASHTO-LRFD Bridge Design Specifications for Orthotropic Steel Deck Bridges
Publication: Journal of Bridge Engineering
Volume 16, Issue 6
Abstract
The orthotropic steel deck bridge is a structural system that has the potential to provide an extended service life and standardized modular design as compared to more conventional bridge construction. This paper summarizes proposed changes to the fifth edition of the AASHTO LRFD Bridge Design Specifications related to orthotropic deck bridges. The current version of AASHTO-LRFD contains provisions that provide limited guidance to complete the fatigue design. Contained within these proposed changes is a new framework for design verification, which may be based on different levels of design or physical testing. Criteria related to loads, load factors, limit states including fatigue in particular, resistance, and analysis requirements are covered in detail. Designs made according to these new provisions can be expected to perform very well and meet the design service life as per AASHTO-LRFD.
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Acknowledgments
This paper is based on work funded by the FHWA to develop a new manual focused on the design, fabrication, and construction of OSD bridges (Manual for Design, Construction, and Maintenance of Orthotropic Steel Bridges, anticipated publication, 2011). The writers would like to express appreciation for the support and advice that was given by the following individuals: John Yadlosky of HDR Engineering, Inc., John Fisher of Lehigh University, Donald White of Georgia Tech, and Bill Wright of Virginia Tech.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 16 • Issue 6 • November 2011
Pages: 759 - 767
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 31, 2010
Accepted: Dec 28, 2010
Published online: Dec 30, 2010
Published in print: Nov 1, 2011
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