Scaling Analysis of Pier-Scouring Processes
Publication: Journal of Engineering Mechanics
Volume 142, Issue 8
Abstract
This study presents a scaling analysis of the time development of clear-water scour depth at bridge piers. It shows that the widely-used exponential formula can be theoretically derived with scaling arguments. The derivation provides connections between the physical pier-scouring process and two empirical constants used in the formula. The dependence of the two constants on sediment coarseness is calibrated using published laboratory data with scour duration ranging from 49 to 1094 h. The analysis presented is restricted to conditions, including steady flow, clear-water scour, narrow circular cylindrical pier, and uniform sediment with low coarseness.
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Information
Published In
Journal of Engineering Mechanics
Volume 142 • Issue 8 • August 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: May 12, 2015
Accepted: Mar 1, 2016
Published online: Apr 11, 2016
Published in print: Aug 1, 2016
Discussion open until: Sep 11, 2016
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