Instrumentation and Modeling of I-35W St. Anthony Falls Bridge
Publication: Journal of Bridge Engineering
Volume 18, Issue 6
Abstract
The I-35W St. Anthony Falls Bridge was constructed to replace the steel truss bridge that collapsed on August 1, 2007. The design of the replacement bridge featured a smart-bridge system. The smart-bridge concept included instrumentation for long-term monitoring of the structural behavior of the bridge. Truck-load tests were conducted prior to opening the bridge and 26 months later to measure the response of the structure under controlled loading. The measurements were used to validate a FEM model of the bridge constructed to further investigate the behavior of the structure. The correlation between computed and measured results was found to be good. This paper describes the bridge, the instrumentation installed within the bridge, the FEM model, and validation of the model with respect to the truck-load tests. Recommendations are provided for static instrumentation plans of concrete box-girder structures.
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Acknowledgments
The authors acknowledge the support of the Minnesota Department of Transportation. Numerical computations were performed using resources provided by the University of Minnesota Supercomputing Institute. The opinions expressed herein represent those of the authors and not necessarily those of the sponsors.
References
AASHTO. (2010). AASHTO LRFD bridge design specifications, 5th Ed., Washington, DC.
ABAQUS [Computer software]. Providence, RI, Dassault Systèmes Simulia Corp.
Figg Bridge Engineers. (2008). I-35W St. Anthony Falls Bridge inspection and maintenance manual, Figg Bridge Engineers, Dallas.
French, C. E. W., Shield, C. K., Stolarski, H. K., Hedegaard, B. D., and Jilk, B. J. (2012). “Instrumentation, Monitoring, and Modeling of the I-35W Bridge.” Rep. MN/RC 2012-24, Minnesota Dept. of Transportation, Minneapolis.
Minnesota Dept. of Transportation. (2008). “As-built construction plan for bridge nos. 27409 and 27410.” State Proj. 2783-120, Fed. Proj. E.R.MN07(300), Minneapolis.
R.J. Watson, Inc. (2008). “St. Anthony Falls (I-35W) bridge replacement.” State Proj. 2783-120, Fed. Proj. E.R.MN07(300), Amherst, NY.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 18 • Issue 6 • June 2013
Pages: 476 - 485
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Aug 2, 2011
Accepted: Feb 7, 2012
Published online: Feb 9, 2012
Published in print: Jun 1, 2013
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