Floating offshore structure and floating offshore power generation device equipped therewith

Abstract

We provide floating offshore structures. [Solution] The floating offshore structure of the present invention includes a plurality of columns and a plurality of pontoons provided at the lower end of each of the columns, wherein a polygonal shape is formed by imaginary lines connecting the columns, the pontoons are provided inside the polygonal shape, the cross-sectional area of ​​the pontoons in the direction parallel to the seawater surface is greater than or equal to the cross-sectional area of ​​the columns in the direction parallel to the seawater surface, and the pontoons may have a shape that protrudes outward from the lower end of the columns.

Description

Technical Field

[0001] The present invention relates to a floating offshore structure and a floating ocean power generation device including the same.

Background Art

[0002] As problems such as environmental regulations associated with global warming and supply-demand instability of fossil fuels have emerged, attention has been focused on wind power generation, which is one of the production systems for new and renewable energy.

[0003] A wind power generation device is a device that is installed on land or at sea and converts the energy of the wind into electrical energy to produce electric power.

[0004] Wind power generation devices have mainly been installed on land, but the installation at sea has gradually increased. For wind power generation, the quality of the wind is generally better at sea than on land, and there is an advantage that it is easier to cope with the noise problem of the blades. In particular, in order to ensure economic efficiency, a large-scale site is required, but it is difficult to have such a site on land, and the coast and offshore sea areas are emerging as large-scale offshore wind farms.

[0005] The structures for installing wind power generation devices at sea can be roughly classified into fixed types and floating types. The fixed structure is a type in which the structure is directly fixed to the seabed surface as on land and copes with environmental loads by structural deformation, and the floating type floats on the water surface, receives its own weight, buoyancy, environmental loads, and mooring forces, and withstands environmental loads by the movement of the structure and mooring forces.

[0006] Until recently, offshore wind power generation devices have been mainly fixed types and installed mainly in shallow waters. However, although the fixed structure fixes the structure to the seabed surface and provides favorable power generation conditions, when the water depth becomes deep, the scale of the structure becomes too large and it becomes difficult to avoid the risk of fatigue failure. In addition, with the trend of increasing the size of wind power generation devices, there is a problem that the costs associated with the fabrication and installation of the structure increase astronomically.

[0007] Furthermore, wind becomes stronger and more constant the further away from land, which can increase power generation efficiency. Therefore, the need for developing wind power generation in deep waters far from the coast is increasingly being raised. Consequently, much research is being conducted on offshore wind power generation devices using floating structures, which are not limited by the size of the structure even in deep water. [Overview of the project] [Problems that the invention aims to solve]

[0008] This invention was created to improve upon conventional technology, and one objective of this invention is to provide a floating offshore structure that can be installed regardless of water depth, and a floating offshore power generation device equipped therewith. [Means for solving the problem]

[0009] A floating offshore structure according to one aspect of the present invention includes a plurality of columns and a plurality of pontoons provided at the lower end of each of the columns, wherein a polygonal shape is formed by imaginary lines connecting the columns, the pontoons are provided inside the polygonal shape, the cross-sectional area of ​​the pontoons in the direction parallel to the seawater surface is greater than or equal to the cross-sectional area of ​​the columns in the direction parallel to the seawater surface, and the pontoons may have a shape that protrudes outward from the lower end of the columns.

[0010] Specifically, the protruding length of the pontoon may be less than or equal to the thickness of the fender used for docking the column to the quay.

[0011] Specifically, the system may further include a center column, which is positioned inside the polygonal shape formed by the above-mentioned column and supports a power generation structure located at its upper end, and a main pontoon located at the lower end of the center column.

[0012] Specifically, the system may further include multiple braces, some of which connect each of the pontoons, other braces which connect the pontoons to the main pontoon, and the remainder of the braces which connect the lower part of the column to the upper part of the main column or the pontoons to the upper part of the main column.

[0013] Specifically, the system further includes a plurality of dampers connected to each of the pontoons, the dampers may have a shape that extends and expands from the pontoons.

[0014] Specifically, it can have a shape that extends from the pontoon inward into the polygonal shape.

[0015] Specifically, the invention further includes tower support columns that support the tower of the power generation structure, and the tower support columns may be positioned eccentrically to one side of the interior of the polygon from the center of the polygon.

[0016] Specifically, it may further include a center column provided at the center of the polygonal shape, and braces connecting each of the columns to the center column.

[0017] Specifically, the tower support column may be installed at one of the points of the brace.

[0018] Specifically, the interiors of the above-mentioned columns, center columns, and tower support columns are filled with ballast water, and the amount of ballast water in the columns adjacent to the tower support columns among the above-mentioned columns and center columns may be less than the amount of ballast water in the other columns.

[0019] Specifically, the system further includes braces connecting each of the above-mentioned columns to the above-mentioned tower support columns, and the length of the brace connecting a column adjacent to the quay wall to the above-mentioned tower support column may be shorter than the length of the brace connecting a column located away from the above-mentioned quay wall to the above-mentioned tower support column.

[0020] Specifically, it further includes a tower of the power generation structure, a structural reinforcement member extending from the lower part of the tower, and a plurality of braces connecting the tower and the column. The tower is provided at the center of the polygon, the position of the lower end of the tower is higher than the position of the lower end of the column, and the braces may include at least a lower end brace connecting the structural reinforcement member and the lower end of the column.

[0021] Specifically, it further includes a pontoon provided at the lower end of the column, and the tower may include a first tower and a second tower arranged below the first tower.

[0022] Specifically, the column may have a circular cross-section parallel to the sea surface or a polygonal shape such as a square or a hexagon.

[0023] The floating ocean power generation device according to one aspect of the present invention may include the above-described floating ocean structure and a power generation structure provided on the floating ocean structure.

Advantages of the Invention

[0024] The floating ocean structure and the floating ocean power generation device according to the present invention can be installed without being affected by the water depth of the installation location.

Brief Description of the Drawings

[0025] [Figure 1] It is a diagram for explaining a floating ocean power generation device including a floating ocean structure according to an embodiment of the present invention. [Figure 2] It is a perspective view for explaining the floating ocean structure FOS shown in FIG. 1. [Figure 3] It is a perspective view for explaining the first column and the first pontoon in FIG. 2. [Figure 4] It is a perspective view for explaining the second and third columns and the second and third pontoons in FIG. 2. [Figure 5] It is a perspective view for explaining a floating ocean structure according to another embodiment of the present invention. [Figure 6] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 7] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 8] Figure 7 shows an exploded perspective view of a floating offshore structure. [Figure 9] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 10] Figure 9 shows an exploded perspective view of a floating offshore structure. [Figure 11] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the invention. [Figure 12] Figure 11 is a bottom view of the floating offshore structure. [Figure 13] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the invention. [Figure 14] Figure 13 is a bottom view of the floating offshore structure. [Figure 15] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the invention. [Figure 16] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the invention. [Figure 17] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the invention. [Figure 18] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the invention. [Figure 19] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 20] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 21] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 22]This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 23] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 24] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 25] Figure 24 is a plan view of the floating offshore structure. [Figure 26] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 27] Figure 26 is a plan view of the floating offshore structure. [Figure 28] This is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention. [Figure 29] Figure 28 is a plan view of the floating offshore structure. [Modes for carrying out the invention]

[0026] The object, particular advantages, and novel features of the present invention will become more apparent from the following detailed description relating to the accompanying drawings and preferred embodiments. Note that in this specification, when assigning reference numerals to components in each drawing, the same component has been assigned the same number whenever possible, even if it appears in different drawings. Furthermore, in describing the present invention, if a specific description of the relevant prior art is deemed to unnecessarily obscure the gist of the invention, such detailed description will be omitted.

[0027] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0028] Figure 1 is a diagram illustrating a floating ocean power generation device equipped with a floating ocean structure according to one embodiment of the present invention.

[0029] Referring to Figure 1, the floating ocean power generation system may include a floating ocean structure FOS and a power generation structure PGS.

[0030] The floating offshore structure FOS may be a structure that supports the power generation structure PGS. The floating offshore structure FOS may comprise a plurality of columns 100, a plurality of pontoons 200, a plurality of braces 300, and a plurality of horizontal reinforcing members 400.

[0031] Multiple columns 100 are vertical structures of the floating offshore structure FOS, and multiple pontoons 200 may be buoyancy bodies that provide buoyancy to the floating offshore structure FOS. Multiple braces 300 can connect the multiple columns 100 and the multiple pontoons 200 to improve the structural stability of the floating offshore structure FOS. In addition, multiple horizontal reinforcing members 400 can act as braces connecting the upper ends of the multiple columns 100.

[0032] The power generation structure PGS may be installed on a floating offshore structure FOS. The power generation structure PGS may include a tower TW, a nacelle NC, and a blade BL.

[0033] The tower TW may be installed on a floating offshore structure FOS. Here, the tower TW may be installed on one of the multiple columns 100 of the floating offshore structure FOS. That is, the power generation structure PGS may be installed eccentrically on one side of the floating offshore structure FOS.

[0034] The nacelle NC may be located on top of the tower TW. The nacelle NC can produce electricity from the rotational force of the blade BL.

[0035] The blade BL is rotatably mounted on the nacelle NC and can be rotated by wind power.

[0036] On the other hand, in this embodiment, the power generation structure PGS was described as being eccentrically installed on one side of the floating offshore structure FOS, but the embodiment is not limited to this. For example, the power generation structure may be installed in the center of the floating offshore structure FOS.

[0037] Figure 2 is a perspective view illustrating the floating offshore structure FOS shown in Figure 1, Figure 3 is a perspective view illustrating the first column and first pontoon in Figure 2, and Figure 4 is a perspective view illustrating the second and third columns and the second and third pontoons in Figure 2.

[0038] Referring to Figures 2 to 4, the floating offshore structure FOS can be comprised of multiple columns 110, 120, and 130, multiple pontoons 210, 220, and 230, multiple braces 300, and multiple horizontal reinforcements 410, 420, and 430.

[0039] Multiple columns 110, 120, and 130 can support a superstructure, such as a power generation structure (PGS). The floating offshore structure (FOS) can have a polygonal shape due to imaginary lines connecting the multiple columns 110, 120, and 130. That is, the columns 110, 120, and 130 can be positioned at the vertices of the polygon.

[0040] The multiple columns 110, 120, and 130 may include the first to third columns 110, 120, and 130. On the other hand, although this embodiment has described an example in which the floating offshore structure FOS includes three columns 110, 120, and 130, it is not limited to this. For example, the floating offshore structure FOS may include four or more columns.

[0041] The cross-sections of the first to third columns 110, 120, and 130 parallel to the sea surface have a polygonal shape, and the first to third columns 110, 120, and 130 may have the same or different cross-sections. For example, the cross-section of the first column 110 parallel to the sea surface may be a hexagon with chamfered areas adjacent to two opposing vertices of a rectangle. Here, the chamfered areas of the first to third columns 110, 120, and 130 may be positioned facing outwards from the floating offshore structure FOS. The chamfered areas of the first to third columns 110, 120, and 130 may be positioned to face outwards from the polygonal shape formed by the multiple columns 110, 120, and 130.

[0042] On the other hand, in this embodiment, the first to third columns 110, 120, and 130 were described as having polygonal shapes in the cross-sections parallel to the seawater surface, but the embodiment is not limited to this. For example, the cross-sections parallel to the seawater surface of the first to third columns 110, 120, and 130 may have straight lines in the parts tangent to the multiple pontoons 210, 220, and 230, while the other areas have a curved shape. Alternatively, the cross-sections parallel to the seawater surface of the first to third columns 110, 120, and 130 may have a shape in which a part of a circle is cut in a straight line, and the pontoons 210, 220, and 230 may be provided in the cut-out area.

[0043] The multiple pontoons 210, 220, 230 may include the first to third pontoons 210, 220, 230. The first to third pontoons 210, 220, 230 may be provided at the lower ends of the first to third columns 110, 120, 130. Here, the first to third pontoons 210, 220, 230 may be provided inside the polygonal shape formed by the first to third columns 110, 120, 130.

[0044] Furthermore, the size of the first pontoon 210 may be larger than the sizes of the second pontoon 220 and the third pontoon 230. Therefore, the buoyancy provided by the first pontoon 210 may be greater than the buoyancy provided by the second pontoon 220 and the third pontoon 230, respectively.

[0045] The cross-sections of the first to third pontoons 210, 220, and 230 parallel to the sea surface have a polygonal shape, and may have the same or different cross-sections. For example, the cross-section of the first pontoon 210 parallel to the sea surface may be a hexagon with chamfered areas adjacent to two vertices of a rectangle positioned away from the first column 110. Also, the cross-sections of the second pontoon 220 and the third pontoon 230 may have a rectangular shape in which at least one of the two vertices of a rectangle positioned away from the second column 120 and the third column 130 is chamfered. The chamfered areas in the cross-sections of the first to third pontoons 210, 220, and 230 may be straight lines or curved shapes.

[0046] The chamfered regions of the first to third pontoons 210, 220, and 230 may be positioned to face inward into the polygonal shape formed by the multiple columns 110, 120, and 130.

[0047] The first to third pontoons 210, 220, and 230 may be equipped with hollow sections HP. The hollow sections HP are formed perpendicular to the seawater surface and can prevent damage to the first to third columns 110, 120, and 130 from waves and other elements.

[0048] Multiple braces 300 can connect multiple columns 100 and multiple pontoons 200 to improve the structural stability of the floating offshore structure FOS. In addition, multiple horizontal reinforcements 400 can act as braces connecting the upper ends of multiple columns 100.

[0049] In the floating offshore structure FOS described above, the first to third pontoons 210, 220, and 230 may be provided on the inner surfaces of the lower ends of the first to third columns 110, 120, and 130. This can be advantageous for docking vessels to the quay for installation or maintenance of the floating offshore structure FOS and power generation structure PGS.

[0050] Figures 5 and 6 are perspective views illustrating a floating offshore structure according to yet another embodiment of the present invention.

[0051] Referring to Figures 5 and 6, the floating offshore structure FOS may include a plurality of columns 160, 170, 180, structural reinforcing members 500, and a plurality of braces 310, 320, 330, 340, 350, 360. Furthermore, as shown in Figure 6, the floating offshore structure FOS may further include a plurality of pontoons 210, 220, 230.

[0052] Multiple columns 160, 170, 180 can support a superstructure, such as a power generation structure PGS. Multiple columns 160, 170, 180 may include first to third columns 160, 170, 180. The cross-sections of the tower TW and the first to third columns 160, 170, 180 parallel to the sea surface may have a circular shape.

[0053] The upper end of Tower TW may be higher than the upper ends of Columns 160, 170, and 180, and the lower end of Tower TW may be lower than the upper ends of Columns 160, 170, and 180, but higher than the lower ends of Columns 160, 170, and 180.

[0054] Columns 160, 170, and 180 may include the first to third columns 160, 170, and 180. The heights of the first to third columns 160, 170, and 180 may be the same.

[0055] The structural reinforcing member 500 may extend from the lower part of the tower TW. The structural reinforcing member 500 can extend from the lower end of the tower TW to provide space for the installation of braces 310, 320, 330, 340, 350, and 360 that connect the tower TW to the first to third columns 160, 170, and 180.

[0056] Multiple braces 310, 320, 330, 340, 350, 360 may include the first to third upper end braces 310, 320, 330 and the first to third lower end braces 340, 350, 360.

[0057] The first to third upper end braces 310, 320, and 330 can connect the lower end of the tower TW to the upper end of the first to third columns 160, 170, and 180. For example, the first upper end brace 310 can connect the lower end of the tower TW to the upper end of the first column 160. The second upper end brace 320 can connect the lower end of the tower TW to the upper end of the second column 170. The third upper end brace 330 can connect the lower end of the tower TW to the upper end of the third column 180.

[0058] The first to third lower end braces 340, 350, and 360 can connect the structural reinforcing member 500 to the lower ends of the first to third columns 160, 170, and 180. For example, the first lower end brace 340 can connect the structural reinforcing member 500 to the lower end of the first column 160. The second lower end brace 350 can connect the structural reinforcing member 500 to the lower end of the second column 170. The third lower end brace 360 ​​can connect the structural reinforcing member 500 to the lower end of the third column 180.

[0059] In the floating offshore structure FOS shown in Figure 6, the multiple pontoons 210, 220, and 230 include the first to third pontoons 210, 220, and 230, and each of the first to third pontoons 210, 220, and 230 may be provided inside the lower ends of the first to third columns 160, 170, and 180. Here, the first to third lower end braces 340, 350, and 360 are not directly connected to the lower ends of the first to third columns 160, 170, and 180, but can connect the first to third pontoons 210, 220, and 230 to the structural reinforcing members 500.

[0060] Each of the first to third pontoons 210, 220, and 230 may include a hollow section HP. The hollow section HP is formed perpendicular to the seawater surface and can prevent damage to the first to third columns 160, 170, and 180 from waves and other elements.

[0061] As described above, the floating offshore structure FOS is equipped with structural reinforcing members 500, which makes it easy to secure installation space for the braces 310, 320, 330, 340, 350, and 360 that connect the tower TW and the first to third columns 160, 170, and especially for the lower end braces 340, 350, and 360 of the first to third columns.

[0062] Figures 7 and 9 are perspective views illustrating a floating offshore structure according to yet another embodiment of the present invention, Figure 8 is an exploded perspective view of the floating offshore structure shown in Figure 7, and Figure 10 is an exploded perspective view of the floating offshore structure shown in Figure 9.

[0063] Referring to Figures 7 to 10, the floating offshore structure FOS may include multiple columns 160, 170, 180, structural reinforcing members 500, multiple braces 310, 320, 330, 340, 350, 360, 370, 380, 390, and multiple pontoons 210, 220, 230.

[0064] Multiple columns 160, 170, and 180 can support a superstructure, such as a power generation structure (PGS).

[0065] In a floating offshore structure (FOS), the tower TW may be positioned in the center, while columns 160, 170, and 180 may be positioned around the tower TW.

[0066] A power generation structure (PGS) may be installed on top of the tower (TW).

[0067] The height of the top of Tower TW may be higher than the height of the top of Columns 160, 170, and 180, and the height of the bottom of Tower TW may be lower than the height of the top of Columns 160, 170, and 180, but higher than the height of the bottom of Columns 160, 170, and 180.

[0068] Tower TW may include a first tower section TW1 and a second tower section TW2. The first tower section TW1 may be located below the second tower section TW2, and the second tower section TW2 may be located above the first tower section TW1. The position of the top of the first tower section TW1 may be substantially the same as the position of the top of columns 160, 170, and 180. Also, the lower end of the first tower section TW1 may be located higher than the lower ends of columns 160, 170, and 180.

[0069] The cross-sections of the first tower section TW1 and the second tower section TW2, parallel to the sea surface, can have a circular shape.

[0070] Columns 160, 170, and 180 may include the first to third columns 160, 170, and 180. The heights of the first to third columns 160, 170, and 180 may be the same as those of the third columns. The cross-sections of the first to third columns 160, 170, and 180 parallel to the seawater surface may have a circular shape.

[0071] On the other hand, as shown in Figures 9 and 10, the diameter of the lower end of the first to third columns 160, 170, and 180 may be larger than the diameter of the upper end of the first to third columns 160, 170, and 180. Also, the diameter of the lower end of the first to third columns 160, 170, and 180 may increase towards the bottom. That is, the lower ends of the first to third columns 160, 170, and 180 may be tapered.

[0072] The structural reinforcing member 500 may extend from the lower part of the first tower section TW1. The structural reinforcing member 500 can extend from the lower end of the first tower section TW1 to provide installation space for braces 310, 320, 330, 340, 350, 360, 370, 380, and 390 that connect the first tower section TW1 and the first to third columns 160, 170, and 180.

[0073] Multiple braces 310, 320, 330, 340, 350, 360, 370, 380, 390 may include the first to third upper end braces 310, 320, 330, the first to third diagonal braces 370, 380, 390, and the first to third lower end braces 340, 350, 360.

[0074] The first to third upper end braces 310, 320, and 330 can connect the upper ends of the first to third columns 160, 170, and 180 to the first tower section TW1. For example, the first upper end brace 310 can connect the upper end of the first column 160 to the first tower section TW1. The second upper end brace 320 can connect the upper end of the second column 170 to the first tower section TW1. The third upper end brace 330 can connect the upper end of the third column 180 to the first tower section TW1.

[0075] The first to third diagonal braces 370, 380, and 390 can connect the lower ends of the first to third columns 160, 170, and 180 to the first tower section TW1. For example, the first diagonal brace 370 can connect the lower end of the first column 160 to the first tower section TW1. The second diagonal brace 380 can connect the lower end of the second column 170 to the first tower section TW1. The third diagonal brace 390 can connect the lower end of the third column 180 to the first tower section TW1.

[0076] The first to third lower end braces 340, 350, and 360 can connect the structural reinforcing member 500 to the lower ends of the first to third columns 160, 170, and 180. For example, the first lower end brace 340 can connect the structural reinforcing member 500 to the lower end of the first column 160. The second lower end brace 350 can connect the structural reinforcing member 500 to the lower end of the second column 170. The third lower end brace 360 ​​can connect the structural reinforcing member 500 to the lower end of the third column 180.

[0077] In the floating offshore structure FOS shown in Figures 7 to 10, the first to third upper end braces 310, 320, 330 and the first to third lower end braces 340, 350, 360 are installed parallel to the seawater surface, while the first to third diagonal braces 370, 380, 390 may be installed at an angle to the seawater surface. That is, in the floating offshore structure FOS shown in Figures 7 to 10, the first to third upper end braces 310, 320, 330, the first to third diagonal braces 370, 380, 390 and the first to third lower end braces 340, 350, 360 can complete a truss structure.

[0078] The multiple pontoons 210, 220, 230 may include the first to third pontoons 210, 220, 230. Each of the first to third pontoons 210, 220, 230 may be located below the first to third columns 160, 170, 180. The cross-section of the first to third pontoons 210, 220, 230 parallel to the seawater surface may be circular in shape.

[0079] The diameters of the first to third pontoons 210, 220, and 230 may be the same as the diameters of the lower ends of the first to third columns 160, 170, and 180. For example, as shown in Figures 7 and 8, the diameters of the first to third pontoons 210, 220, and 230 may be the same as the diameters of the first to third columns 160, 170, and 180. Also, as shown in Figures 9 and 10, the diameters of the first to third pontoons 210, 220, and 230 may be the same as the diameters of the lower ends of the first to third columns 160, 170, and 180. That is, the diameters of the first to third pontoons 210, 220, and 230 may be larger than the diameters of the upper ends of the first to third columns 160, 170, and 180.

[0080] In this embodiment, the floating offshore structure FOS can be manufactured by forming the tower TW, the first to third columns 160, 170, and 180, and multiple braces 310, 320, 330, 340, 350, 360, 370, 380, and 390 into a single block, while the tower TW and the first to third pontoons 210, 220, and 230 can each be manufactured into separate blocks. In other words, the floating offshore structure FOS of this embodiment can be easily manufactured by forming each structure into blocks and separating them.

[0081] Figures 11, 13, and 15-18 are perspective views illustrating floating offshore structures according to yet another embodiment of the invention, Figure 12 is a bottom view of the floating offshore structure shown in Figure 11, and Figure 14 is a bottom view of the floating offshore structure shown in Figure 13.

[0082] Referring to Figures 11 to 18, the floating offshore structure FOS may include a tower TW, multiple columns 160, 170, and 180, multiple pontoons 260 and 270, and multiple horizontal reinforcing members 410, 420, and 430.

[0083] Multiple columns 160, 170, 180 can support a superstructure, such as a power generation structure PGS. Multiple columns 160, 170, 180 may include first to third columns 160, 170, 180.

[0084] The nacelle NC and blade BL of the power generation structure PGS may be provided on the tower TW.

[0085] The height of the upper end of Tower TW may be greater than the height of the upper ends of Columns 160, 170, and 180, and the height of the lower end of Tower TW may be substantially the same as or greater than the height of the lower ends of Columns 160, 170, and 180. The cross-section of Tower TW parallel to the sea surface may be circular in shape.

[0086] Columns 160, 170, and 180 may include the first to third columns 160, 170, and 180. The heights of the first to third columns 160, 170, and 180 may be the same.

[0087] The cross-sections of the first to third columns 160, 170, and 180, which are parallel to the seawater surface, can have a polygonal shape. For example, as shown in Figures 11 to 14, the cross-sections of the first to third columns 160, 170, and 180, which are parallel to the seawater surface, may have a quadrilateral shape.

[0088] Furthermore, as shown in Figures 15 to 18, the cross-sections of the first to third columns 160, 170, and 180 parallel to the seawater surface may be hexagonal in shape. Here, the width of the region of the first to third columns 160, 170, and 180 adjacent to the tower TW may be greater than the width of the region of the first to third columns 160, 170, and 180 that is separated from the tower TW.

[0089] The multiple pontoons 260, 270 may include auxiliary pontoons 270 provided inside the lower ends of the first to third columns 160, 170, 180. Here, the auxiliary pontoons 270 may have a shape that covers the remaining three sides of the first to third columns 160, 170, 180, excluding the outer surfaces. The auxiliary pontoons 270 may also have a trapezoidal or hexagonal shape, and the width of the area adjacent to the first to third columns 160, 170, 180 may be smaller than the width of the area separated from the first to third columns 160, 170, 180.

[0090] Furthermore, the multiple pontoons 270 may further include a main pontoon 260 provided at the lower end of the tower TW, as shown in Figures 16 to 18. The main pontoon 260 may be provided in a manner that covers the lower end of the tower TW. The cross-section of the main pontoon 260 parallel to the seawater surface may have a shape corresponding to the cross-section of the tower TW parallel to the seawater surface.

[0091] For example, if the cross-section of Tower TW parallel to the sea surface is circular, then the cross-section of Mainpontoon 260 parallel to the sea surface can also be circular.

[0092] Multiple horizontal reinforcing members 410, 420, and 430 are installed parallel to the seawater surface and can connect the upper ends of the first to third columns 160, 170, and 180 to the tower TW. In other words, the horizontal reinforcing members 410, 420, and 430 can act as braces connecting the upper ends of the first to third columns 160, 170, and 180 to the tower TW.

[0093] The multiple horizontal reinforcing members 410, 420, and 430 may include the first to third reinforcing members 410, 420, and 430. One end of the first reinforcing member 410 can be connected to the tower TW, and the other end of the first reinforcing member 410 can be connected to the first column 160. One end of the second reinforcing member 420 can be connected to the tower TW, and the other end of the second reinforcing member 420 can be connected to the second column 170. One end of the third reinforcing member 420 can be connected to the tower TW, and the other end of the third reinforcing member 420 can be connected to the third column 180.

[0094] On the other hand, considering the structural stability of the floating offshore structure FOS, multiple braces 300 may be further included. The multiple braces 300 may be provided in various forms.

[0095] As shown in Figure 11, the brace 300 can connect the lower ends of the first to third columns 160, 170, and 180 to a portion of the lower end of the tower TW. In Figure 20, the brace 300 can have a shape that extends in a direction inclined toward the seawater surface.

[0096] Furthermore, as shown in Figures 13 and 18, a portion of the brace 300 can connect to each of the auxiliary pontoons 270. Another portion of the brace 300 can connect the auxiliary pontoons 270 to the tower TW, or the auxiliary pontoons 270 to the main pontoon 260, horizontally to the sea surface. Yet another portion of the brace 300 can connect the auxiliary pontoons 270 to the tower TW at an angle to the sea surface. The remainder of the brace 300 can also connect the first to third columns 160, 170, 180 and the auxiliary pontoons 270 at an angle.

[0097] Furthermore, as shown in Figure 17, a portion of the brace 300 can connect each of the pontoons 270. Another portion of the brace 300 can connect the auxiliary pontoon 270 to the tower TW, or the auxiliary pontoon 270 to the main pontoon 260 horizontally to the sea surface. Yet another portion of the brace 300 can connect the auxiliary pontoon 260 to the tower TW at an angle to the sea surface.

[0098] Figures 19 and 20 are perspective views illustrating a floating offshore structure according to yet another embodiment of the present invention.

[0099] Referring to Figures 19 and 20, the floating offshore structure FOS may include a tower TW, a number of columns 160, 170, 180, CC, a number of pontoons 260, 270, and a number of horizontal reinforcements 410, 420, 430.

[0100] Multiple columns 160, 170, 180, CC can support a superstructure, such as a power generation structure PGS. Multiple columns 160, 170, 180, CC may include first to third columns 160, 170, 180 and a center column CC.

[0101] The first to third columns 160, 170, and 180 may be positioned outside the center column CC. For example, the first to third columns 160, 170, and 180 may be positioned corresponding to the vertices of a polygon, such as a triangle.

[0102] The heights of the first to third columns 160, 170, and 180 may be the same. The cross-sections of the first to third columns 160, 170, and 180 parallel to the sea surface may be circular or polygonal. For example, as shown in Figure 19, the cross-sections of the first to third columns 160, 170, and 180 parallel to the sea surface may be hexagonal.

[0103] Here, the width of the region adjacent to the center column CC of the first to third columns 160, 170, and 180 may be greater than the width of the region separated from the center column CC of the first to third columns 160, 170, and 180.

[0104] The tower TW, nacelle NC, and blade BL of the power generation structure PGS may be provided on the center column CC. The height of the center column CC may be the same as or greater than the heights of the first to third columns 160, 170, and 180.

[0105] The center column CC may be located inside the polygon formed by the first to third columns 160, 170, and 180. For example, the center column CC may be located corresponding to the center of the triangle formed by the first to third columns 160, 170, and 180.

[0106] The multiple pontoons 260, 270 may include a main pontoon 260 provided at the lower end of the center column CC, and auxiliary pontoons 270 provided inside the lower ends of the first to third columns 160, 170, 180.

[0107] The main pontoon 260 may be provided in a manner that covers the lower end of the center column CC. The cross-section of the main pontoon 260 parallel to the seawater surface can have a shape corresponding to the cross-section of the center column CC parallel to the seawater surface. For example, if the cross-section of the center column CC parallel to the seawater surface is circular, the cross-section of the main pontoon 260 parallel to the seawater surface can also be circular.

[0108] The auxiliary pontoon 270 may have a shape that covers the remaining three sides of the first to third columns 160, 170, and 180, excluding the outer surfaces. The auxiliary pontoon 270 may also be trapezoidal or hexagonal in shape, and the width of the area adjacent to the first to third columns 160, 170, and 180 may be smaller than the width of the area separated from the first to third columns 160, 170, and 180.

[0109] The auxiliary pontoon 270 is provided so as to have a cross-sectional area greater than or equal to that of the first to third columns 160, 170, and 180, and the auxiliary pontoon 270 may also have a shape that protrudes outward from the lower end of the first to third columns 160, 170, and 180 (on the side that docks with the quay). Here, the length of the auxiliary pontoon 270 that protrudes from the lower part of the first to third columns 160, 170, and 180 may be determined considering the thickness of insect-proof members such as fenders used when docking with the quay. That is, the length of the auxiliary pontoon 270 that protrudes outward may be less than or equal to the thickness of the fender. In this case, the length of the auxiliary pontoon 270 that protrudes outward is formed to be relatively smaller than the length that protrudes inward facing the main pontoon 260.

[0110] Multiple horizontal reinforcing members 410, 420, and 430 are installed parallel to the seawater surface and can connect the upper ends of the first to third columns 160, 170, and 180 to the upper end of the center column CC. In other words, the horizontal reinforcing members 410, 420, and 430 can function as braces 300 connecting the upper ends of the first to third columns 160, 170, and 180 to the upper end of the center column CC.

[0111] The multiple horizontal reinforcing members 410, 420, and 430 may include first to third reinforcing members 410, 420, and 430. One end of the first reinforcing member 410 can be connected to the upper end of the center column CC, and the other end of the first reinforcing member 410 can be connected to the first column 160. One end of the second reinforcing member 420 can be connected to the upper end of the center column CC, and the other end of the second reinforcing member 420 can be connected to the second column 170. One end of the third reinforcing member 420 can be connected to the upper end of the center column CC, and the other end of the third reinforcing member 420 can be connected to the third column 180.

[0112] On the other hand, as shown in Figure 19, the floating offshore structure FOS of the present invention may further include a plurality of braces 300, taking into consideration structural stability. The plurality of braces 300 may be provided in various forms.

[0113] Some of the brace 300 can connect to each of the auxiliary pontoons 270. The remaining brace 300 can connect the auxiliary pontoons 270 and the main pontoon 260 horizontally to the sea surface.

[0114] Figures 21 and 22 are perspective views illustrating a floating offshore structure according to yet another embodiment of the present invention.

[0115] Referring to Figures 21 and 22, the floating offshore structure FOS may include a tower TW, a plurality of columns 160, 170, 180, CC, a plurality of pontoons 260, 270, a plurality of braces 300, and a plurality of horizontal reinforcements 410, 420, 430.

[0116] Multiple columns 160, 170, 180, CC can support a superstructure, such as a power generation structure PGS. Multiple columns 160, 170, 180, CC may include first to third columns 160, 170, 180 and a center column CC.

[0117] The first to third columns 160, 170, and 180 may be positioned outside the center column CC. For example, the first to third columns 160, 170, and 180 may be positioned corresponding to the vertices of a polygon, such as a triangle.

[0118] The width of the region adjacent to the center column CC of the first to third columns 160, 170, and 180 may be greater than the width of the region separated from the center column CC of the first to third columns 160, 170, and 180. The tower TW, nacelle NC, and blade BL of the power generation structure PGS may be provided on the center column CC. The height of the center column CC may be the same as or greater than the height of the first to third columns 160, 170, and 180.

[0119] The center column CC may be located inside the polygon formed by the first to third columns 160, 170, and 180. For example, the center column CC may be located corresponding to the center of the triangle formed by the first to third columns 160, 170, and 180.

[0120] The multiple pontoons 260, 270 may include a main pontoon 260 provided at the lower end of the center column CC, and auxiliary pontoons 270 provided inside the lower ends of the first to third columns 160, 170, 180.

[0121] The main pontoon 260 may be provided in a manner that covers the lower end of the center column CC. The cross-section of the main pontoon 260 parallel to the seawater surface can have a shape corresponding to the cross-section of the center column CC parallel to the seawater surface. For example, if the cross-section of the center column CC parallel to the seawater surface is circular, the cross-section of the main pontoon 260 parallel to the seawater surface can also be circular.

[0122] The auxiliary pontoon 270 may be shaped to cover the remaining three sides of the first to third columns 160, 170, and 180, excluding the outer surfaces.

[0123] As shown in Figure 21, the auxiliary pontoon 270 may be trapezoidal or hexagonal in shape, and the width of the region adjacent to the first to third columns 160, 170, and 180 may be smaller than the width of the region separated from the first to third columns 160, 170, and 180.

[0124] Furthermore, as shown in Figure 22, the auxiliary pontoon 270 may have an arc shape in the region adjacent to the center column CC.

[0125] The multiple horizontal reinforcing members 410, 420, and 430 may include the first to third reinforcing members 410, 420, and 430. The horizontal reinforcing members 410, 420, and 430 are installed parallel to the seawater surface and can connect the upper ends of the first to third columns 160, 170, and 180 to the upper end of the center column CC. That is, the horizontal reinforcing members 410, 420, and 430 can function as braces 300 connecting the upper ends of the first to third columns 160, 170, and 180 to the upper end of the center column CC.

[0126] Multiple braces 300 may be provided, and they may be installed with consideration for the structural stability of the floating offshore structure FOS. For example, the braces 300 can be connected to each of the auxiliary pontoons 270 and the upper end of the main pontoon 260 at an angle to the seawater surface.

[0127] Figure 23 is a perspective view illustrating a floating marine structure according to yet another embodiment of the present invention.

[0128] Referring to Figure 23, the floating offshore structure FOS may include a tower TW, multiple columns 160, 170, 180, CC, multiple pontoons 260, 270, and multiple horizontal reinforcements 410, 420, 430.

[0129] Multiple columns 160, 170, 180, CC can support a superstructure, such as a power generation structure PGS. Multiple columns 160, 170, 180, CC may include first to third columns 160, 170, 180 and a center column CC.

[0130] The first to third columns 160, 170, and 180 may be positioned outside the center column CC. For example, the first to third columns 160, 170, and 180 may be positioned corresponding to the vertices of a polygon, such as a triangle.

[0131] The width of the region adjacent to the center column CC of the first to third columns 160, 170, and 180 may be greater than the width of the region separated from the center column CC of the first to third columns 160, 170, and 180.

[0132] The tower TW, nacelle NC, and blade BL of the power generation structure PGS may be provided on the center column CC. The height of the center column CC may be the same as or greater than the heights of the first to third columns 160, 170, and 180.

[0133] The multiple pontoons 260, 270 may include a main pontoon 260 provided at the lower end of the center column CC, and auxiliary pontoons 270 provided inside the lower ends of the first to third columns 160, 170, 180.

[0134] The main pontoon 260 may be provided in a manner that covers the lower end of the center column CC. The auxiliary pontoon 270 may be shaped to cover the remaining three sides of the first to third columns 160, 170, and 180, excluding the outer surfaces.

[0135] The auxiliary pontoon 270 may be trapezoidal or hexagonal in shape. Furthermore, the region of the auxiliary pontoon 270 adjacent to the first to third columns 160, 170, and 180 may be arc-shaped.

[0136] On the other hand, a damper DP may be positioned in the direction adjacent to the main pontoon 260 of the auxiliary pontoon 270.

[0137] The damper DP may have an extended shape from the auxiliary pontoon 270. That is, the damper DP may have a polygonal or arc-shaped form depending on the shape of the auxiliary pontoon 270.

[0138] The damper DP can increase the vertical motion period of the floating offshore structure (FOS) by increasing the added mass of the auxiliary pontoon 270. Increasing the vertical motion period of the FOS allows it to avoid wave periods, thus improving the stability of the FOS.

[0139] The multiple horizontal reinforcing members 410, 420, and 430 may include the first to third reinforcing members 410, 420, and 430. The horizontal reinforcing members 410, 420, and 430 are installed parallel to the seawater surface and can connect the upper ends of the first to third columns 160, 170, and 180 to the upper end of the center column CC. That is, the horizontal reinforcing members 410, 420, and 430 can function as braces 300 connecting the upper ends of the first to third columns 160, 170, and 180 to the upper end of the center column CC.

[0140] Figure 24 is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention, and Figure 25 is a plan view of the floating offshore structure shown in Figure 24.

[0141] Referring to Figures 24 and 25, the floating offshore structure FOS may include a tower TW, multiple columns 160, 170, 180, CC, TSC, multiple braces 310, 320, 330, 340, 350, 360, and multiple horizontal reinforcements.

[0142] Multiple columns 160, 170, 180, CC, TSC can support a superstructure, such as a power generation structure PGS. The multiple columns 160, 170, 180, CC, TSC may include first to third columns 160, 170, 180, a center column CC, and a tower support column TSC. The cross-sections of the first to third columns 160, 170, 180, the center column CC, and the tower support column TSC, parallel to the seawater surface, can have various shapes, such as circles or polygons. For example, the cross-sections of the first to third columns 160, 170, 180, the center column CC, and the tower support column TSC, parallel to the seawater surface, may be circular.

[0143] The first to third columns 160, 170, and 180 may be positioned outside the center column CC. For example, the first to third columns 160, 170, and 180 may be positioned corresponding to the vertices of a polygon, such as a triangle.

[0144] The center column CC may be located inside the polygon formed by the first to third columns 160, 170, and 180. For example, the center column CC may be located corresponding to the center of the triangle formed by the first to third columns 160, 170, and 180.

[0145] The center column CC may be the same height as or greater than the heights of the first to third columns 160, 170, and 180, and the tower support column TSC.

[0146] The tower TW, nacelle NC, and blade BL of the power generation structure PGS may be provided on the tower support column TSC. The height of the tower support column TSC may be the same as or greater than the height of the first to third columns 160, 170, 180 and the center column CC.

[0147] Multiple braces 310, 320, 330, 340, 350, 360 may include upper braces 310, 320, 330 and lower braces 340, 350, 360.

[0148] The upper braces 310, 320, and 330 can connect the upper ends of the first to third columns 160, 170, and 180 to the upper end of the center column CC.

[0149] Lower braces 340, 350, and 360 can connect the lower ends of the first to third columns 160, 170, and 180 to the lower end of the center column CC.

[0150] The upper braces 310, 320, and 330 may include the first to third upper braces 310, 320, and 330. The first upper brace 310 can connect the upper end of the first column 160 to the upper end of the center column CC. The second upper brace 320 can connect the upper end of the second column 170 to the upper end of the center column CC. The third upper brace 330 can connect the upper end of the third column 180 to the upper end of the center column CC.

[0151] The lower braces 340, 350, and 360 may include the first to third lower braces 340, 350, and 360. The first lower brace 340 can connect the lower end of the first column 160 to the lower end of the center column CC. The second lower brace 350 can connect the lower end of the second column 170 to the lower end of the center column CC. The third lower brace 360 ​​can connect the lower end of the third column 180 to the lower end of the center column CC.

[0152] On the other hand, the tower support column TSC may be positioned eccentrically to one side of the polygon formed by the first to third columns 160, 170, and 180, away from the center of the polygon.

[0153] For example, the tower support column TSC may be provided at one point on the line connecting the first to third columns 160, 170, and 180 and the center column CC. That is, the tower support column TSC may be provided corresponding to one point on the first upper brace 310 and first lower brace 340, the second upper brace 320 and second lower brace 350, and the third upper brace 330 and third lower brace 360.

[0154] The interiors of the first to third columns 160, 170, and 180 and the tower support column TSC may be filled with ballast water. Here, since the tower support column TSC is located not at the center of the polygon formed by the first to third columns 160, 170, and 180, the amount of ballast water filling in the first to third columns 160, 170, and 180 and the tower support column TSC may differ from each other in order to control COD (co-directional wave, current, and wind). For example, the amount of ballast water filling may be less the closer a column is to the tower support column TSC. That is, the amount of ballast water filling in a column adjacent to the tower support column TSC among the first to third columns 160, 170, and 180 may be less than the amount of ballast water filling in the other columns.

[0155] Figure 26 is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention, and Figure 27 is a plan view of the floating offshore structure shown in Figure 26.

[0156] Referring to Figures 26 and 27, the floating offshore structure FOS may include a tower TW, multiple columns 160, 170, 180, TSC, and multiple braces 310, 320, 330, 340, 350, 360.

[0157] Multiple columns 160, 170, 180, and TSC can support a superstructure, such as a power generation structure PGS. The multiple columns 160, 170, 180, and TSC may include first to third columns 160, 170, 180 and tower support columns TSC. The cross-sections of the first to third columns 160, 170, 180 and tower support columns TSC, parallel to the seawater surface, can have various shapes, such as circles or polygons. For example, the cross-sections of the first to third columns 160, 170, 180 and tower support columns TSC, parallel to the seawater surface, can have a circular shape.

[0158] The first to third columns 160, 170, and 180 may be positioned outside the tower support column TSC. For example, the first to third columns 160, 170, and 180 may be positioned corresponding to the vertices of a polygon, such as a triangle.

[0159] The tower TW, nacelle NC, and blade BL of the power generation structure PGS may be provided on the tower support column TSC. The tower support column TSC may be the same height as or greater than the first to third columns 160, 170, and 180.

[0160] The tower support column TSC may be located inside the polygon formed by the first to third columns 160, 170, and 180. For example, the tower support column TSC may be located off-center from the center of the triangle formed by the first to third columns 160, 170, and 180.

[0161] On the other hand, the interiors of the first to third columns 160, 170, and 180 and the tower support column TSC may be filled with ballast water. Here, since the tower support column TSC is located not at the center of the polygon formed by the first to third columns 160, 170, and 180, the amount of ballast water filling in the first to third columns 160, 170, and 180 and the tower support column TSC may differ from each other in order to control COD (co-directional wave, current, and wind). For example, the amount of ballast water filling may be less the closer a column is to the tower support column TSC. That is, the amount of ballast water filling in a column adjacent to the tower support column TSC among the first to third columns 160, 170, and 180 may be less than the amount of ballast water filling in the other columns.

[0162] Multiple braces 310, 320, 330, 340, 350, 360 may include upper braces 310, 320, 330 and lower braces 340, 350, 360.

[0163] The upper braces 310, 320, and 330 can connect the upper ends of the first to third columns 160, 170, and 180 to the upper ends of the tower support columns TSC.

[0164] Lower braces 340, 350, and 360 can connect the lower ends of the first to third columns 160, 170, and 180 to the lower ends of the tower support columns TSC.

[0165] The upper braces 310, 320, and 330 may include the first to third upper braces 310, 320, and 330. The first upper brace 310 can connect the upper end of the first column 160 to the upper end of the tower support column TSC. The second upper brace 320 can connect the upper end of the second column 170 to the upper end of the tower support column TSC. The third upper brace 330 can connect the upper end of the third column 180 to the upper end of the tower support column TSC. Here, at least one of the first to third upper braces 310, 320, and 330 may have a different length from the rest. For example, the lengths of the first and third upper braces 310 and 330 may be shorter than the length of the second upper brace 320.

[0166] The lower braces 340, 350, and 360 may include the first to third lower braces 340, 350, and 360. The first lower brace 340 can connect the lower end of the first column 160 to the lower end of the tower support column TSC. The second lower brace 350 can connect the lower end of the second column 170 to the lower end of the tower support column TSC. The third lower brace 360 ​​can connect the lower end of the third column 180 to the lower end of the tower support column TSC. Here, at least one of the first to third lower braces 340, 350, and 360 may have a different length from the rest. For example, the lengths of the first and third lower braces 340 and 360 may be shorter than the length of the second lower brace 350.

[0167] Furthermore, the lengths of the first and third lower braces 340 and 360 may be the same as the lengths of the first and third upper braces 310 and 330. The length of the second upper brace 320 may be the same as the length of the second lower brace 350.

[0168] On the other hand, the tower support column TSC may be positioned eccentrically to one side of the polygon formed by the first to third columns 160, 170, and 180, away from the center of the polygon.

[0169] The following section provides a more detailed explanation of the location of the tower support columns (TSCs).

[0170] When a floating offshore structure FOS docks with a quay QW, two of the first to third columns 160, 170, and 180 may be positioned adjacent to the quay QW. For example, the first and third columns 160 and 180 may be positioned adjacent to the quay QW, while the second column 170 is positioned at a distance from the quay QW.

[0171] The lengths of the second upper brace 320 and the second lower brace 350, which connect the second column 170 to the tower support column TSC, may be longer than the lengths of the first and third lower braces 340 and 360 and the first and third upper braces 310 and 330, which connect the first and third columns 160 and 180 to the tower support column TSC.

[0172] Furthermore, the second upper brace 320 and the second lower brace 350 can have a shape that extends in a direction perpendicular to the quay wall QW.

[0173] Therefore, the tower support column TSC can be deflected towards the quay wall QW side along the extensions of the second upper brace 320 and the second lower brace 350 from the center of the triangle formed by the first to third columns 160, 170, and 180.

[0174] As described above, when the tower support column TSC is deflected toward the quay wall, the distance between the quay wall QW and the power generation structure PGS can be reduced. Therefore, the operation of equipment such as cranes installed adjacent to the quay wall QW can be made easier.

[0175] Figure 28 is a perspective view illustrating a floating offshore structure according to yet another embodiment of the present invention, and Figure 29 is a plan view of the floating offshore structure shown in Figure 28.

[0176] Referring to Figures 28 and 29, the floating offshore structure FOS may include a tower TW, multiple columns 160, 170, 180, TSC, and multiple braces 310, 320, 330, 340, 350, 360.

[0177] Multiple columns 160, 170, 180, and TSC can support a superstructure, such as a power generation structure PGS. The multiple columns 160, 170, 180, and TSC may include first to third columns 160, 170, 180 and tower support columns TSC. The cross-sections of the first to third columns 160, 170, 180 and tower support columns TSC, parallel to the seawater surface, can have various shapes, such as circles or polygons. For example, the cross-sections of the first to third columns 160, 170, 180 and tower support columns TSC, parallel to the seawater surface, can have a circular shape.

[0178] The first to third columns 160, 170, and 180 may be positioned outside the tower support column TSC. For example, the first to third columns 160, 170, and 180 may be positioned corresponding to the vertices of a polygon, such as a triangle.

[0179] The tower TW, nacelle NC, and blade BL of the power generation structure PGS may be provided on the tower support column TSC. The tower support column TSC may be the same height as or greater than the first to third columns 160, 170, and 180.

[0180] The tower support column TSC may be located inside the polygon formed by the first to third columns 160, 170, and 180. For example, the tower support column TSC may be located off-center from the center of the triangle formed by the first to third columns 160, 170, and 180.

[0181] On the other hand, the interiors of the first to third columns 160, 170, and 180 and the tower support column TSC may be filled with ballast water. Here, since the tower support column TSC is located not at the center of the polygon formed by the first to third columns 160, 170, and 180, the amount of ballast water filling in the first to third columns 160, 170, and 180 and the tower support column TSC may differ from each other in order to control COD (co-directional wave, current, and wind). For example, the amount of ballast water filling may be less the closer a column is to the tower support column TSC. That is, the amount of ballast water filling in a column adjacent to the tower support column TSC among the first to third columns 160, 170, and 180 may be less than the amount of ballast water filling in the other columns.

[0182] Multiple braces 310, 320, 330, 340, 350, 360 may include upper braces 310, 320, 330 and lower braces 340, 350, 360.

[0183] The upper braces 310, 320, and 330 can connect the upper ends of the first to third columns 160, 170, and 180 to the upper ends of the tower support columns TSC.

[0184] Lower braces 340, 350, and 360 can connect the lower ends of the first to third columns 160, 170, and 180 to the lower ends of the tower support columns TSC.

[0185] The upper braces 310, 320, and 330 may include the first to third upper braces 310, 320, and 330. The first upper brace 310 can connect the upper end of the first column 160 to the upper end of the tower support column TSC. The second upper brace 320 can connect the upper end of the second column 170 to the upper end of the tower support column TSC. The third upper brace 330 can connect the upper end of the third column 180 to the upper end of the tower support column TSC. Here, at least one of the first to third upper braces 310, 320, and 330 may have a different length from the rest. For example, the length of the first upper brace 310 may be shorter than the lengths of the second and third upper braces 320 and 330.

[0186] The lower braces 340, 350, and 360 may include the first to third lower braces 340, 350, and 360. The first lower brace 340 can connect the lower end of the first column 160 to the lower end of the tower support column TSC. The second lower brace 350 can connect the lower end of the second column 170 to the lower end of the tower support column TSC. The third lower brace 360 ​​can connect the lower end of the third column 180 to the lower end of the tower support column TSC. Here, at least one of the first to third lower braces 340, 350, and 360 may have a different length from the rest. For example, the length of the first lower brace 340 may be shorter than the lengths of the second and third lower braces 350 and 360.

[0187] Furthermore, the lengths of the first lower braces 340 and 360 may be the same as the length of the first upper brace 310. The lengths of the second and third upper braces 320 and 330 may be the same as the lengths of the second and third lower braces 350 and 360.

[0188] On the other hand, the tower support column TSC may be positioned eccentrically to one side of the polygon formed by the first to third columns 160, 170, and 180, away from the center of the polygon.

[0189] The following section will explain the position of the center column CC in more detail.

[0190] When a floating offshore structure FOS docks with a quay QW, two of the first to third columns 160, 170, and 180 may be positioned adjacent to the quay QW. For example, the first and third columns 160 and 180 may be positioned adjacent to the quay QW, while the second column 170 is positioned at a distance from the quay QW.

[0191] The lengths of the first upper brace 310 and the first lower brace 340 connecting the first column 160 to the tower support column TSC may be shorter than the lengths of the second and third upper braces 320 and 330 and the second and third lower braces 350 and 360 connecting the second and third columns 170 and 180 to the tower support column TSC.

[0192] Therefore, the tower support column TSC can be deflected from the center of the triangle formed by the first to third columns 160, 170, and 180 in the direction adjacent to the first column 160.

[0193] In other words, the tower support column TSC can be deflected adjacent to the quay wall QW from the center of the triangle formed by the first to third columns 160, 170, and 180.

[0194] As described above, when the tower support column TSC is deflected toward the quay wall, the distance between the quay wall QW and the power generation structure PGS can be reduced. Therefore, the operation of equipment such as cranes installed adjacent to the quay wall QW can be made easier.

[0195] In addition to the embodiments described above, the present invention can encompass all embodiments arising from combinations of at least two or more of the above embodiments, or combinations of at least one or more of the above embodiments with known technologies.

[0196] Although the present invention has been described in detail through specific embodiments, this is merely for illustrative purposes and is not limited thereto. It is clear that modifications and improvements can be made within the technical concept of the present invention by those with ordinary skill in the art.

[0197] Any simple modifications or changes to the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

Claims

1. Multiple columns are placed at the vertices of a polygon, Multiple pontoons are provided at the lower ends of the aforementioned multiple columns, At least one horizontal reinforcing member is positioned at a predetermined first height higher than the sea level and configured to connect adjacent columns to one another, At least one connecting member is positioned at a predetermined second height lower than the first height and configured to connect adjacent pontoons to one another, At least one intermediate reinforcing member located between the at least one horizontal reinforcing member and the at least one connecting member A floating offshore structure (FOS) characterized by having the following features.

2. The floating offshore structure according to claim 1, characterized in that the at least one intermediate reinforcing member extends from the first height to the second height.

3. The floating offshore structure according to claim 2, characterized in that the at least one intermediate reinforcing member forms a truss structure together with the at least one horizontal reinforcing member.

4. The floating offshore structure according to claim 3, characterized in that the at least one intermediate reinforcing member is arranged in a "V" shape or an inverted "V" shape.

5. The floating offshore structure according to claim 3, characterized in that the at least one intermediate reinforcing member, together with the at least one horizontal reinforcing member, forms a triangular structure.

6. The floating offshore structure according to claim 4, characterized in that the thickness of the at least one intermediate reinforcing member is relatively thinner than the thickness of the at least one horizontal reinforcing member.

7. The floating offshore structure according to claim 1, characterized in that the second height is lower than the sea level, the first end of the at least one intermediate reinforcing member is located at the first height, and the second end of the at least one intermediate reinforcing member is located at the second height.

8. The floating offshore structure according to claim 1, characterized in that the plurality of columns have a width that increases toward the center of the polygonal shape.

9. The floating marine structure according to claim 1, characterized in that the polygonal shape is triangular.

10. A floating offshore structure according to any one of claims 1 to 9, The power generation structure installed on the aforementioned floating offshore structure and A floating ocean power generation device characterized by being equipped with the following features.

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