Floating offshore structure and floating offshore power generation apparatus having same
A floating offshore structure of the present invention comprises: a plurality of columns; and a tower support column for supporting a tower of a power generation structure, wherein a polygonal shape is formed by means of an imaginary line connecting the columns, and the tower supporting column can be provided at one point of one of the sides of the polygonal shape.
1 . A floating offshore structure comprising:
a plurality of columns; and
a plurality of pontoons installed on lower ends of the columns,
wherein a polygonal shape is formed by a virtual line connecting the columns,
the pontoons are installed inside the polygonal shape,
the columns include a first column, a second column, and a third column, and
a cross-sectional area of the first column parallel to a sea level is greater than a cross-sectional area of each of the second and third columns parallel to the sea level,
wherein the pontoons are installed on inner side surfaces of the polygonal shape of the columns,
each of the pontoons has a hollow formed in a direction perpendicular to the sea level, and
a porous damper is installed in the hollow, and
wherein the porous damper includes a first porous plate, a second porous plate, and a third porous plate each having a plurality of through holes, and
the through holes of the first to third porous plates overlap each other in a plan view.
2 . The floating offshore structure of claim 1 , wherein a cross section of the first column parallel to a sea level has a hexagonal shape in which regions adjacent to two facing vertices of a rectangle are chamfered, and the chamfered region is disposed to face an outside of the polygonal shape, and
cross sections of the second and third columns parallel to the sea level have rectangular shapes.
3 . The floating offshore structure of claim 1 , further comprising a tower support column configured to support a tower of a power generation structure,
wherein the tower support column is provided at one point of one side of sides of the polygonal shape.
4 . A floating offshore power generation apparatus comprising:
the floating offshore structure of claim 1 ; and
a power generation structure installed on the floating offshore structure.
5 . A floating offshore structure comprising:
a plurality of columns; and
a plurality of pontoons installed on lower ends of the columns,
wherein a polygonal shape is formed by a virtual line connecting the columns,
the pontoons are installed inside the polygonal shape,
the columns include a first column, a second column, and a third column, and
a cross-sectional area of the first column parallel to a sea level is greater than a cross-sectional area of each of the second and third columns parallel to the sea level,
wherein the pontoons are installed on inner side surfaces of the polygonal shape of the columns,
each of the pontoons has a hollow formed in a direction perpendicular to the sea level, and
a porous damper is installed in the hollow, and
wherein the porous damper includes a first porous plate, a second porous plate, and a third porous plate each having a plurality of through holes, and
the through holes of the first and second porous plates do not overlap each other, and the through holes of the first and third porous plates overlap each other in a plan view.
6 . The floating offshore structure of claim 5 , further comprising a tower support column configured to support a tower of a power generation structure,
wherein the tower support column is provided at one point of one side of sides of the polygonal shape.
7 . A floating offshore power generation apparatus comprising:
the floating offshore structure of claim 5 ; and
a power generation structure installed on the floating offshore structure.