Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
ISSN-L : 1883-8944
Paper
QUANTITATIVE EVALUATION OF REDUCTION EFFECT OF LONGSHORE SAND TRANSPORT BY GROINS ON DYNAMICALLY EQUILIBRIUM COAST
Takaaki UDAToshinori ISHIKAWAMasashi SATOYoshiyuki MIZUNOShiho MIYAHARAMasumi SERIZAWA
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2016 Volume 72 Issue 2 Pages I_811-I_816

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Abstract
 Beach changes when groins with various shapes were installed on a dynamically equilibrium coast with a constant rate of longshore sand transport were investigated using the contour-line change model. First, the Numakawa-daini floodway on the Fuji coast was taken as an example of the beach changes around a groin installed on a steep coast, and beach changes were reproduced using the contour-line change model. Then, the relationship among the length of the groin, its point depth and longshore sand transport was investigated together with the study on the difference between L-shape groin and a single groin. Moreover, the difference in the function of a single groin and L-shape groin to be installed on the Shimizu coast was studied by the same model.
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© 2016 by Japan Society of Civil Engineers
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