| 摘要 |
PROBLEM TO BE SOLVED: To provide a breakwater structure 11 having the low upper bed and with sufficiently required breakwater performance by considering that the waves rising over by an offshore side wall surface 21 are blown back by strong winds. SOLUTION: An arch-inclined wall surface part 211 is provided on the offshore side wall surface 21, and the parameter X of the following formula indicating the rising height of the waves with respect to the upper bed height is set in the relationship to the breakwater performance required for the installation sea area of the breakwater structure 21. [Formula 1] X=2.19+0.466h/Ho-1.63 Ho/ho-36.4S/HoLo)-0.334Lh/B, where Ho is the maximum offshore wave height, Lo is the offshore wave length, ho is the offshore wave depth, h is the installation water depth of the structure, S is the sectional area of an area held between the offshore side wall surface 21 and the calm sea water depth, Lh is the length of the offshore side wall surface 21 above the calm water level, and B is the height of the offshore side wall surface 21.
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