Coastal erosion is a global concern that has been augmenting due to the natural evolution of beaches, human activities and sea-level rise. One of the eco-friendly shore protection methods is to dissipate the wave energy by constructing offshore breakwaters. Conical pile head breakwater (CPHB) is one of the eco-friendly innovative offshore structures consisting of closely spaced piles with an enlarged cross-sectional area (conical pile head) in the vicinity of the free surface. In the present study, perforations are incorporated over the conical pile head to achieve higher efficiency by promoting energy dissipation. The influence of the perforations on the performance characteristics, namely wave transmission (Kt), wave reflection (Kr) and energy dissipation (Kd) of the perforated CPHB is comprehensively investigated through physical model studies. The effect of perforations and their distribution around the pile head (Pa), percentage of perforation (P) and size of perforations (S/D) on the wave attenuation characteristics are evaluated to arrive at an optimum configuration. The study is carried out under monochromatic waves of varying wave height (0.06–0.16 m) and wave period (1.4–2 s) at different depths of water (0.35, 0.40 and 0.45 m). A minimum Kt of 0.58 associated with Kr of 0.26 and Kd of 0.78 is obtained with an optimum configuration of Pa = 50%, P = 19.2% and S/D = 0.25. The Kt of the proposed CPHB is about 19 to 35% lesser than that of the perforated hollow pile breakwater under matching test conditions. Overall, providing the perforations is found to be effective in enhancing the wave attenuation capability by up to 12.4%. Further, empirical equations are formulated and validated with the experimental data. The empirical equations estimate the Kt and Kr values accurately with a high coefficient of determination (R2 ≥ 0.90).


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Investigation on innovative pile head breakwater for coastal protection




    Erscheinungsdatum :

    2024-02-01




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Breakwater Rehabilitation Study, Crescent City Harbor, California: Coastal Model Investigation

    Baumgartner, R. Clay / Carver, Robert D. / Davidson, D. Donald | HENRY – Bundesanstalt für Wasserbau (BAW) | 1985

    Freier Zugriff

    Sloping Float Breakwater Study, Oregon Inlet, North Carolina: Coastal Model Investigation

    Carver, Robert D. / Markle, Dennis G. / Dubose, Willie G. et al. | HENRY – Bundesanstalt für Wasserbau (BAW) | 1987

    Freier Zugriff

    Design for Navigation Improvements, Wave Protection, and Breakwater Stability for Proposed Boat-Launching Facility, Laupahoehoe Point, Hawaii: Coastal Model Investigation

    Bottin, Robert R. Jr. / Markle, Dennis G. / Mize, Marvin G. | HENRY – Bundesanstalt für Wasserbau (BAW) | 1987

    Freier Zugriff


    FLOATING BREAKWATER AND FLOATING BREAKWATER OPERATING METHOD

    LIM KYUNG HUN | Europäisches Patentamt | 2015

    Freier Zugriff