Influence of Foundation Scour on the Dynamic Response of an Existing Bridge
Publication: Journal of Bridge Engineering
Volume 16, Issue 2
Abstract
Foundation scour is a major issue affecting the structural safety of existing bridges, hence its monitoring is of paramount importance. This paper reports a case history of assessment and monitoring with dynamic tests for a bridge affected by scouring and subjected to retrofitting. Two different approaches measuring traffic-induced vibrations are applied as potential tools for monitoring foundation scour. The modal identification of bridge spans is one approach, and the observation of the dynamic response of pier foundations is the other approach. A finite-element model is used to choose the parameters for scour monitoring. Both approaches are applied to the experimental data collected about the structure prior to and after retrofitting to show their effectiveness.
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Acknowledgments
The experimental part of the work was funded by the Provincia di Torino (Torino County Authority), to whom the writers are also grateful for data on the topographical monitoring and information on the history of the bridge. The writers are grateful to the following individuals for their precious help in collecting and processing experimental data and in performing numerical simulations: Diego Rivella, Paolo Occelli, Marco Raviolo, and Andrea Toselli.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 16 • Issue 2 • March 2011
Pages: 295 - 304
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Sep 28, 2009
Accepted: Jun 10, 2010
Published online: Jul 29, 2010
Published in print: Mar 1, 2011
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