Long-Term Structural Health Monitoring of the San Ysidro Bridge
Publication: Journal of Performance of Constructed Facilities
Volume 20, Issue 1
Abstract
As part of the Lifecycle Innovative Financing Evaluation initiative, the San Ysidro Bridge along U.S. Route 550 will be monitored throughout a warranty period to determine changes in deflection, stiffness, and load-carrying capacity. This paper discusses an initial live-load test on the San Ysidro Bridge as well as a subsequent load test on a full-scale single lane test bridge. The two load tests in conjunction with finite element modeling were used to determine the load rating for both shear and moment of the San Ysidro Bridge. This load rating was then compared with the load rating using the distribution factors from the American Association of State Highway and Transportation Officials (AASHTO) Standard and Load and Resistance Factor Design Specifications. According to both AASHTO specifications, the interior girder shear controlled the load rating of the San Ysidro Bridge. Using the finite element modeling scheme of frame and shell elements the interior girder moment was found to control the design. This load rating will be used as a baseline for comparison with future load ratings throughout the warranty period.
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Acknowledgments
The writers would like to thank the New Mexico State and Highway and Transportation Department for the support that made this research possible. Special thanks goes to Jimmy Camp (State Bridge Engineer) and David Albright (New Mexico Highway Research Bureau).
References
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 20 • Issue 1 • February 2006
Pages: 14 - 20
Copyright
© 2006 ASCE.
History
Received: Apr 13, 2004
Accepted: Aug 31, 2004
Published online: Feb 1, 2006
Published in print: Feb 2006
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