Estimating Equilibrium Scour Depth at Cylindrical Piers in Experimental Studies
Publication: Journal of Hydraulic Engineering
Volume 137, Issue 9
Abstract
Using data from six very long experiments on local scour at single cylindrical piers, some of the existing equilibrium criteria found in the literature are assessed. It is found that common criteria, which consider scour depth increments in 24 h or the observation of horizontal plateaux in records of scour depth time evolution, can incur important errors on the equilibrium scour depth. Using some of the expressions for time evolution found in the literature to fit the experimental data and infer equilibrium scour depth through extrapolation to infinite time, it is found that the equilibrium scour depth cannot be specified, in general, for experiments shorter than one to two weeks.
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Acknowledgments
The reviewers and editors are thanked for their comments and suggestions.
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Information
Published In
Journal of Hydraulic Engineering
Volume 137 • Issue 9 • September 2011
Pages: 1089 - 1093
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Oct 19, 2010
Accepted: Feb 22, 2011
Published online: Feb 24, 2011
Published in print: Sep 1, 2011
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