JP2018119391A5 - Seawall - Google Patents

Claims (3)

A rectangular caisson that is embedded in the water bottom ground with the top opening aligned with the water bottom,
The inner space of the caisson is divided in the thickness direction of the caisson into a structure lifting chamber at the center and a floating inflow chamber on both sides, and at the lower end, the structure lifting chamber and each floating A partition wall formed with a plurality of communication ports communicating with the inflow chamber;
A tide structure having a levitation box housed in the structure lifting chamber so as to be movable up and down, and an internal space serving as an air chamber for imparting buoyancy;
A lifting device that lifts and lowers the tide structure between a housing position of the structure lifting chamber and a floating position in which an upper end surface of the tide structure is disposed above the water surface;
A lid that closes the upper surface opening of the inflow chamber when floating;
The caisson is provided with a lid opening / closing means for opening the lid only while the tide structure is floating, and the lid closing means for closing the others.
While the tide structure is floating, the lid body is opened by the lid body opening / closing means, so that the water around the caisson is allowed to flow from the upper surface openings to the floating inflow chambers. anti Shiotsutsumi characterized by causing to flow into the structure lifting chamber through the communication port. The buoyancy of the floating box making the proof Shiotsutsumi according to claim 1, characterized in that it balances the gravity of the tide structure. The partition wall, and characterized in that two to three portions in the thickness direction of the caisson, anti Shiotsutsumi according to claim 1 or 2.