Chapter
Apr 26, 2012
Analysis and Testing of the Historic Blue River Bridge Subjected to Wind
Publication: Forensic Engineering (2006)
Abstract
The overall purpose of this research is to analyze an historic truss bridge called the Blue River Bridge near Dillon, Colorado under wind load to investigate the stiffening effect of the deck. The bridge, located in the Rocky Mountains has a timber deck with relatively high stiffness in the lateral direction. The traditional method of analysis is based on a skeleton frame with no deck and alternative load paths are neglected. Analytical modeling was completed using finite element software. The American Association of State Highway Transportation Officials (AASHTO) wind load of 75 psf was applied to the models to demonstrate the stiffening effect of the deck. The deck analytical model was verified by a field test under real wind conditions. In summary, Blue River Bridge was analyzed under AASHTO wind load for two different systems, skeleton frame and skeleton with stringers and deck and again under wind pressure determined experimentally for the skeleton with stringers and deck. The results were compared for critical members. Despite existing distress in the truss and abutments, it was found that the lateral stiffness of the deck was near its theoretical maximum.
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© 2007 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Authors
Affiliations
Shohreh Hamedian
Structural Engineer, J.R. Engineering, 6020 Greenwood Plaza Blvd., Greenwood Village, CO 80111 (Master of Science graduate student University of Colorado)
Frederick R. Rutz, Ph.D.
P.E.
Senior Project Manager, J.R. Harris & Company, 1776 Lincoln Street, Suite 1100, Denver, CO 80203
Kevin L. Rens, Ph.D.
P.E.
Associate Professor, Department of Civil Engineering, University of Colorado at Denver, Campus Box 113, PO Box 173364, Denver, CO 80217-3364
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.