Abstract
A flap gate breakwater is a new type structure for coastal disaster reduction; the breakwater usually lies down on a seabed and rises up through sea surface with buoyancy when tsunami or storm surge occurs. In past studies, it has been confirmed that the flap gate breakwater has capabilities against tsunamis. The characteristics of wave pressure acting on flap gate are different from those on a fixed gate and a breakwater since the flap gate moves according to acting waves or tsunamis. The present study examined the characteristics of wave pressure acting on the flap gate by hydraulic experiments using monochromatic waves and tsunamis. It was confirmed that the gate motion and wave pressure were closely related, and wave pressure was reduced by employing fluid resistance plates.
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More From: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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