Abstract
This paper provides background on the use of lightweight aggregate concrete in long-span bridges. Observed time-dependent deflection of long-span lightweight aggregate concrete box-girder bridges is highlighted. The paper also summarizes the instrumentation program for health monitoring of the new Benicia-Martinez Bridge, which was recently completed in Northern California. Initial service performances of the bridge are assessed through deformation measurement of the superstructure. A primary objective of the instrumentation program is to identify time-dependent effects attributable to creep and shrinkage for future design and analysis of long-span bridges constructed of high-strength lightweight aggregate concrete.
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Acknowledgments
The research described in this paper was funded by the California Department of Transportation. Opinions expressed are solely that of the author and do not represent the view of the sponsors. Special thanks are due to Carlos Zuritz, a former graduate research assistant at the University of California, Davis; Li-Hong Sheng and Bob Brignano of Caltrans; and Hans Strandgaard of CH2MHILL.
References
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Published In
Journal of Performance of Constructed Facilities
Volume 30 • Issue 1 • February 2016
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jan 20, 2014
Accepted: Oct 23, 2014
Published online: Dec 1, 2014
Discussion open until: May 1, 2015
Published in print: Feb 1, 2016
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