Riprap Incipient Motion and Shields' Parameter

by Roger T. Kilgore, GKY & Assoc, Springfield, United States,
G. Kenneth Young, GKY & Assoc, Springfield, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Unobstructed incipient motion data from a variety of sources are compiled to re-examine current thinking regarding riprap stability. Shields' framework is investigated and relationships are proposed between Froude number and Shields' parameter. Such relationships suggest that current methodologies result in over-sized riprap when flow fields are at or above Froude number of 0.8.



Subject Headings: Shear stress | Motion (dynamics) | Riprap | Parameters (statistics) | Stress analysis | Fluid flow | Turbulent flow | Fluid velocity

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