Evaluation of Sediment Gradation Effects on Clear-Water Pier Scour with Densimetric Froude Number
Publication: Journal of Engineering Mechanics
Volume 146, Issue 12
Abstract
This study evaluates sediment gradation effects on clear-water scour at bridge piers. By considering the average erosion and deposition rates in a pier-scour hole, the normalized equilibrium scour depth is theoretically shown to be a cubic function of the densimetric Froude number. Comparisons with experimental data demonstrate that the cubic law achieves its best fit when the representative particle size is taken to be . The present prediction equation, which is founded on rational theoretical principles, provides an improved approach to evaluating sediment gradation effects on clear-water scour around bridge piers apart for pure empiricism.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request.
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Experimental data used in Figs. 1–4.
Acknowledgments
The authors would gratefully acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 51979242).
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Published In
Journal of Engineering Mechanics
Volume 146 • Issue 12 • December 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Mar 29, 2020
Accepted: Jul 30, 2020
Published online: Sep 28, 2020
Published in print: Dec 1, 2020
Discussion open until: Feb 28, 2021
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