Non-Repeatability, Scale- and Model Effects in Laboratory Measurement of Impact Loads Induced by an Overtopped Bore on a Dike Mounted Wall
Maximilian Streicher (Universiteit Gent)
Andreas Kortenhaus (Universiteit Gent)
C Altomare (Universiteit Gent, Universitat Politecnica de Catalunya)
Steven Hughes (Colorado State University)
Krasimir Marinov (University of Architecture, Civil Engineering and Geodesy)
B Hofland (TU Delft - Hydraulic Structures and Flood Risk)
Xuexue Chen (HaskoningDHV Nederland B.V)
T. Suzuki (Flanders Hydraulics Research)
Lorenzo Cappietti (University of Florence)
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Abstract
Overtopping bore impact forces on a dike mounted vertical wall were measured in similar large-scale (Froude length scale factor 1-to-4.3) and small-scale (Froude length scale factor 1-to-25) models. The differences due to scale effects were studied, by comparing the up-scaled force measurements from both models in prototype. It was noted that if a minimum layer thickness, velocity of the overtopping flow and water depth at the dike toe were maintained in the small-scale model, the resulting differences in impact force due to scale effects are within the range of differences due to non-repeatability and model effects.