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1 May 2007 Wave Run-Up on the Zeebrugge Rubble Mound Breakwater: Full-Scale Measurement Results Versus Laboratory Results
Julien De Rouck, Björn Van de Walle, Peter Troch, Jentsje van der Meer, Luc Van Damme, Josep R. Medina, Marc Willems, Peter Frigaard
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Abstract

A clear difference between full-scale wave run-up measurements and small-scale model test results had been noticed during a MAST II project. This finding initiated a thorough study of wave run-up through the European MAST III OPTICREST project. Full-scale measurements have been carried out on the Zeebrugge rubble mound breakwater. This breakwater has been modeled in three laboratories: two 2D models at a scale of 1 : 30 and one 3D model at a scale of 1 : 40 have been built at Flanders Hydraulics (Belgium), at Universidad Politécnica de Valencia (Spain), and at Aalborg University (Denmark). Wave run-up has been measured by a digital run-up gauge. This gauge has proven to measure wave run-up more accurately than the traditional wire gauge. Wave spectra measured in Zeebrugge have been reproduced in the laboratories. Results of small-scale model tests and full-scale measurement results have been compared. This comparison confirmed the MAST II outcome: wave run-up is underestimated by small-scale model tests. The difference between full-scale measurement results and small-scale model test results is the result of model effects. The porosity of the armor layer has a significant influence on wave run-up and may explain the dependency of wave run-up on the water level observed in Zeebrugge. An influence of the spectral shape has also been noticed.

Julien De Rouck, Björn Van de Walle, Peter Troch, Jentsje van der Meer, Luc Van Damme, Josep R. Medina, Marc Willems, and Peter Frigaard "Wave Run-Up on the Zeebrugge Rubble Mound Breakwater: Full-Scale Measurement Results Versus Laboratory Results," Journal of Coastal Research 2007(233), 584-591, (1 May 2007). https://doi.org/10.2112/04-0157A.1
Received: 23 January 2004; Accepted: 3 January 2005; Published: 1 May 2007
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KEYWORDS
gauge
grooved cubes
porosity
Scale model
spectrum
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