In this study a new type of partially perforated caisson breakwater is introduced with two shallow chambers split horizontally by an impermeable plate at the mean sea level. A plexiglass laboratory model of the structure was manufactured with different frontface perforation ratios and adjustable chamber breadths, then tested under 2D non-breaking regular and irregular waves. The horizontal wave force and wave moment are evaluated as dimensionless parameters from measured pressure-time series. A control group of tests was also conducted with plain vertical face under identical waves, also the wave loads on a vertical face for the same wave properties were computed using Goda (1985) formulation. Results show that the dimensionless wave forces and dimensionless wave moments can be reduced by a ratio up to 35%-40% under regular and irregular waves and structure performance increases with decreasing wave length. The obtained results are also compared with reference to a fully perforated (Jarlan) caisson using the method given by Tabet-Aoul and Lambert (2003) and a general harmony was seen both for the magnitudes and variation of wave loads with dimensionless chamber breadth (B/L).


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Reduction of non-breaking wave loads on caisson type breakwaters using a modified perforated configuration


    Additional title:

    Verringerung der Belastung von nicht gebrochenen Wellen auf einen Caisson-Wellenbrechertyp unter Verwendung einer modifizierten Perforationsgestaltung


    Contributors:

    Published in:

    Ocean Engineering ; 36 , 17-18 ; 1316-1331


    Publication date :

    2009


    Size :

    16 Seiten, 18 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    PIV-Measurement of Breaking Wave Kinematics and Impact Loading of Caisson Breakwaters

    Oumeraci, H. / Bruce, T. / Klammer, P. et al. | British Library Conference Proceedings | 1995



    Dynamic response of caisson breakwaters

    Martinelli, I. / Lamberti, A. | British Library Online Contents | 2011


    EFFECT OF SHORT-CRESTEDNESS AND OBLIQUITY ON NON-BREAKING AND BREAKING WAVE FORCES APPLIED TO VERTICAL CAISSON BREAKWATERS

    Martinelli, L. / Lamberti, A. / Frigaard, P. | British Library Online Contents | 2007