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  • Sandy Beach Profile Response to Sloping Seawalls: An Experimental Study

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    Author(s)
    Zheng, J-H
    Jeng, D-S
    Mase, H
    Griffith University Author(s)
    Jeng, Dong-Sheng
    Year published
    2007
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    Abstract
    Seawalls are commonly used as a tool for coastal defence worldwide. Most previous studies have considered the case of vertical seawalls and descriptions of existing seawalls, rather than the influence of different designs of sloping seawalls on beach erosion. In this study, laboratory investigations of an undistorted moveable bed model were conducted to determine the resulting beach profile of artificial sandy beaches. In the experiments, three different sloping seawalls were considered under erosive wave conditions with a 50-year return period. The coast of Northern Jiangsu Province, China, is used as a case study. To ...
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    Seawalls are commonly used as a tool for coastal defence worldwide. Most previous studies have considered the case of vertical seawalls and descriptions of existing seawalls, rather than the influence of different designs of sloping seawalls on beach erosion. In this study, laboratory investigations of an undistorted moveable bed model were conducted to determine the resulting beach profile of artificial sandy beaches. In the experiments, three different sloping seawalls were considered under erosive wave conditions with a 50-year return period. The coast of Northern Jiangsu Province, China, is used as a case study. To simulate natural conditions, similarity criteria are developed assuming that the energy dissipation per unit volume along the beach profile is uniform and that the wave properties can be properly scaled by Froude criteria. Field surveys of beach profile changes due to the storm surge induced by Typhoon 9711 were taken to validate the experimental model and good agreements were attained. Spatial profile configurations were studied by examining dominant profile features such as the break point bar and the scour trough on the seawall-backed profiles. Experimental results provided a reference for the maintenance of artificial sandy beaches and the design of seawalls on the coast of Northern Jiangsu Province, China.
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    Journal Title
    Journal of Coastal Research
    Volume
    50
    Publisher URI
    http://cerf-jcr.org/index.php/international-coastal-symposium/ics-2007australia/434-sandy-beach-profile-response-to-sloping-seawalls-an-experimental-study-j-h-zheng-d-s-jeng-and-h-mase-pg-334-337
    Copyright Statement
    © 2007 CERF. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Civil Geotechnical Engineering
    Earth Sciences
    Engineering
    Publication URI
    http://hdl.handle.net/10072/63981
    Collection
    • Journal articles

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