Application manner and its structure null of gravitational force type oceanic

摘要

When constructing a gravity type marine structure at a relatively large depth of installation, a footing 2 serving as a float is constructed in the dry dock, and a cylindrical body 4 serving as an underwater lower part is constructed on the footing 2 in the sea bed of shallow sea. The cylindrical body 4 is assembled in a telescopic manner to make the upper cylinder 4C float. Ballast water WB is injected into the footing 2 at the location where the water depth is at the depth, and the footing 2 is settled, and the upper cylinder 4C is floated to extend the lower cylinder. After the footing is held, the filling material is filled in the footing 2 and the tubular body 4, and a marine upper part is constructed on the top of the tubular body 4. In order to construct a submersible underwater substructure on a floating footing, it is possible to construct a structure for large water depth in the area which can not secure the calm sea area of quiet water depth. By utilizing buoyancy and gravity at the installation point of the large depth, the structure can be easily expanded without the large scale driving equipment, and the huge structure can be easily settled.