Effect of Soil Stress History on Scour Evaluation of Pile-Supported Bridges
Publication: Journal of Performance of Constructed Facilities
Volume 29, Issue 6
Abstract
Scour is a major cause of bridge failures, and the Federal Highway Administration (FHWA) now mandates that states assess the susceptibility of their bridge inventory to scour. The authors have developed and described an integrated analysis program (IAP) that allows the user to accurately approximate nonlinear soil behavior around pile foundations within a structural analysis model. This paper describes a study performed to examine the influence of soil stress history on the outcome of a scour susceptibility analysis. Twenty-two models including the superstructure, substructure, and soil reactions were examined in which scour depth, soil type, and inclusion of soil stress history effects were varied. It was found that the stress history of soils had a limited effect on the performance of the bridge analyzed. This result was found to be in contrast to prior findings from studies performed on isolated piles, indicating that performing an integrated-type analysis is key to obtaining an accurate assessment of bridge scour susceptibility.
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Acknowledgments
The research described in this paper was funded by the Kansas Department of Transportation (KDOT) through the KTRANS research program. The authors would like to express their appreciation to KDOT for this support. The results and opinions presented in this paper are those of the authors and do not reflect the policy or recommendation of KDOT.
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Information & Authors
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Published In
Journal of Performance of Constructed Facilities
Volume 29 • Issue 6 • December 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jun 11, 2014
Accepted: Aug 28, 2014
Published online: Oct 6, 2014
Discussion open until: Mar 6, 2015
Published in print: Dec 1, 2015
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