SCALE EFFECTS OF WAVE IMPACT PRESSURES ON COB ARMOR UNITS

M.W. Howarth, N.W.H. Allsop, A.M. Vann, R.J. Jones, J.P. Davis

Abstract


Freudian scaling laws are often used to convert model wave impact pressures to prototype scale. However, although many model studies have been performed in the past, the effects of scale on the magnitude and duration of wave impact pressures have yet to be determined. Wave impact pressures were monitored on a Cob armoured breakwater at LaCollette Harbour, Jersey, UK, throughout the Winter of 1993/94, In addition, a 1:32 scale model of the prototype breakwater was constructed at the University of Bristol and subjected to a similar wave climate as was measured at prototype scale. A comparison of the pressures measured at the 2 scales has allowed the scale effects present in the wave impact process to be determined.

Keywords


scale effects; wave impact; wave pressure; armor; cob armor

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