Surface-type floating reefs

Abstract

To provide a surface layer floating fish bank capable of reducing the amount of steel material constituting a frame structure and capable of defining and forming a space inside a floating body with flat walls.SOLUTION: Provided is a surface layer floating fish bank to be installed on a sea surface in a floating state, comprising: an outer shell body 10 formed into a hollow cylindrical shape; a deck disposed by blocking an upper part of the outer shell body; a shell bottom disposed by blocking a lower part of the outer shell body; and a cylindrical partition wall body 14 disposed inside the outer shell body and configured by placing wall plates 14b between column materials 14a arrayed annularly to define a storehouse space 15 inwardly. The cylindrical partition wall body and the outer shell body are made as chord materials. The surface layer floating fish bank is configured to have an annular truss structure 16 by connecting the outer shell body and the cylindrical partition wall body by a plurality of lattice materials 16b in a circumferential direction of the outer shell body and the cylindrical partition wall body.SELECTED DRAWING: Figure 6

Description

Technical Field

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[0001] The present invention relates to a surface - type floating fish reef that can reduce the amount of steel material constituting the framework structure and can partition the void inside the floating body with flat walls.

Background Art

[0002] As surface - type floating fish reefs installed in a floating state on the water surface, for example, Patent Documents 1 and 2 are known.

[0003] The "floating fish reef" of Patent Document 1 is a floating structure that is moored by a cable and an anchor or self - propelled on the ocean surface. It has an energy source in the floating body and is designed to emit light and attract fish at any depth position in the sea.

[0004] The "floating fish reef" of Patent Document 2 is equipped with a device for continuously or intermittently dropping an organic - based solubilizer into the sea.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] The floating body of the floating fish reef is a steel - made hollow structure covered with a curved outer shell for the framework structure. By using steel materials, it obtains the strength not to be destroyed by external forces such as wave forces, and by making it hollow, it can obtain buoyancy that is not drawn into the water.

[0007] If we try to make the floating body structurally stronger and increase its buoyancy, its weight will increase and its size will also become larger.

[0008] Traditionally, the internal framework structure of the outer shell consisted of numerous steel members arranged in a longitudinal and transverse direction, as well as radially from the center of the floating body. This presented a challenge: as the size of the floating body increased to gain buoyancy, the amount of steel required also increased, leading to heavier weight and higher costs.

[0009] Furthermore, the interior of the floating structure is partitioned by bulkheads within the outer shell, providing space for various types of equipment and for maintenance work on that equipment.

[0010] Due to the arrangement of the steel structural members in a radial pattern, the partition walls were also designed to have a curved shape.

[0011] Since equipment is typically rectangular in shape, its installation on curved partitions could be complicated or even difficult.

[0012] Therefore, flat walls were constructed within the void, but these walls obstructed the construction of the floating structure, making it difficult for workers to move and hindering the construction work.

[0013] The present invention was devised in view of the above-mentioned conventional problems, and aims to provide a surface-type floating artificial reef that can reduce the amount of steel material constituting the frame structure and can partition the void inside the floating body with flat walls. [Means for solving the problem]

[0014] The surface-type floating fish reef according to the present invention is a surface-type floating fish reef installed in a floating state on the water surface, comprising an outer shell formed in the shape of a hollow cylinder, a deck provided to seal the upper part of the outer shell, a shell bottom provided to seal the lower part of the outer shell, and a cylindrical partition wall provided inside the outer shell, which is constructed by stretching wall plates between column members arranged in a ring shape and partitions a storage space inside, wherein the cylindrical partition wall and the outer shell are used as chord members, and these outer shell and cylindrical partition wall are connected by a plurality of lattice members in the circumferential direction of the outer shell and cylindrical partition wall to form an annular truss structure.

[0015] The wall panel is a flat plate material, and the cylindrical partition body is formed in a planar polygonal shape.

[0016] The annular truss structure is characterized in that a plurality of the annular truss structures are provided in the vertical height direction of the outer shell.

[0017] The annular truss structure is characterized in that additional lattice members for connecting the cylindrical partition body and the outer shell are provided between the lattice members adjacent to each other.

Advantages of the Invention

[0018] In the surface-type floating fish reef according to the present invention, the amount of steel material constituting the framework structure can be reduced, and the internal cavity can be partitioned by flat walls.

Brief Description of the Drawings

[0019] [Figure 1] It is an explanatory drawing for explaining a floating fish reef to which a preferred embodiment of the surface-type floating fish reef according to the present invention is applied. [Figure 2] It is a framework diagram of an outer shell showing a preferred embodiment of the surface-type floating fish reef according to the present invention. [Figure 3] It is a framework diagram of a deck showing a preferred embodiment of the surface-type floating fish reef according to the present invention. [Figure 4] It is a framework diagram of a bottom shell showing a preferred embodiment of the surface-type floating fish reef according to the present invention. [Figure 5] It is a cross-sectional view taken along the arrow B-B in FIG. 6 showing a preferred embodiment of the surface-type floating fish reef according to the present invention. [Figure 6] It is a cross-sectional view taken along the arrow A-A in FIG. 5 showing a preferred embodiment of the surface-type floating fish reef according to the present invention. [Figure 7] It is an enlarged view of part C in FIG. 6.

Embodiments for Carrying Out the Invention

[0020] A preferred embodiment of the surface-type floating artificial reef according to the present invention will be described in detail below with reference to the accompanying drawings.

[0021] As shown in Figure 1, a surface-type floating artificial reef (hereinafter simply referred to as a floating artificial reef) 1 is installed in a floating state on the sea surface 5 by connecting the other end of a mooring rope 4, one end of which is connected to an anchor 3 sunk to the seabed 2.

[0022] The floating artificial reef 1, which is floating on the sea surface 5, attracts marine organisms such as fish and is used as an artificial reef.

[0023] The floating artificial reef 1 is equipped with various facilities 6 such as communication equipment and navigation aids on its upper part, as well as handrails 7 and hatches (not shown). On its lower part, it is provided with legs 8 for when it is installed on land or mounted on a workboat, and a mooring ring 9 to which the other end of the mooring rope 4 is connected via a shackle.

[0024] As shown in Figures 1 to 4, the external shape of the floating artificial reef 1 is formed from an outer shell 10 that is a hollow cylindrical body with openings at the top and bottom, a deck 11 provided on the upper part of the outer shell 10 to seal the upper opening, and a shell bottom 12 provided on the lower part of the outer shell 10 to seal the lower opening.

[0025] The outer shell 10 is composed of an annular shell member 10a formed by arranging a plurality of steel plates in the circumferential direction of the outer shell 10 and sequentially welding these steel plates together, a ring-shaped rib member 10b formed along the circumferential direction of the inner surface of the shell member 10a as shown in the left portion of Figure 2, and a main longitudinal rib member 10c and a longitudinal rib member 10d formed along the vertical direction of the inner surface of the shell member 10a.

[0026] The ring-shaped rib members 10b are arranged in multiple stages in the vertical direction of the shell member 10a, the main longitudinal rib members 10c are arranged in multiples at intervals in the circumferential direction of the shell member 10a, and the longitudinal rib members 10d are arranged in large numbers between the main longitudinal rib members 10c at intervals in the circumferential direction of the shell member 10a.

[0027] In this embodiment, the ring-shaped rib members 10b are provided in two stages, upper and lower, and eight main longitudinal rib members 10c are provided at equal intervals.

[0028] The ring-shaped rib members 10b and the longitudinal rib members 10d are made of L-shaped steel angle material, and one end of this angle material that forms the L shape is welded to the shell member 10a.

[0029] H-shaped steel is used for the main longitudinal rib member 10c, and the flange of the H-shaped steel is welded to the shell member 10a.

[0030] In the illustrated example, the outer shell 10 is formed in a planar circular shape. However, the outer shell 10 may also be formed in a planar elliptical or oval shape, or in a planar polygonal shape.

[0031] In this embodiment, the outer shell 10 is formed with a cylindrical surface in the upper part in the vertical height direction, and a conical surface in the lower part toward the shell base 12.

[0032] The main longitudinal rib members 10c and 10d, which are located in the lower portion, are provided at an angle along the slope of the conical surface, and their upper ends are welded and connected to the lower ends of the main longitudinal rib members 10c and 10d, which are located on the cylindrical surface of the upper portion.

[0033] As shown in the right portion of Figure 3, the deck 11 is composed of a deck member 11a formed in a disc shape by welding together steel plate material, with a rough, flat surface (top surface); and as shown in the left portion of Figure 3, H-shaped steel main members 11b welded to the back surface (bottom surface) of the deck member 11a, arranged radially from the center of the deck 11; and steel reinforcing plates 11c welded to the deck member 11a, arranged vertically and horizontally in the radial and circumferential directions of the deck 11 between the main members 11b.

[0034] As shown in Figure 4, the shell base 12 is composed of a shell base member 12a formed in a disc shape by welding together steel plates, an H-shaped steel frame member 12b positioned inward from the outer edge of the shell base member 12a and formed in an annular shape (octagonal in the figure) around the center of the shell base 12, and welded to the shell base member 12a, main members 12c made of H-shaped steel welded to the surface (upper surface) of the shell base member 12a, arranged radially from the center of the shell base 12, steel reinforcing plates 12d made of steel welded to the shell base member 12a, arranged vertically and horizontally in the radial and circumferential directions of the shell base 12 between the main members 12c, and an expanded metal work platform (partially shown in the figure with shading) 12e provided as an overlay on the reinforcing plates 12d surrounded by the main members 12c and the frame member 12b.

[0035] The floating artificial reef 1 may be entirely covered with FRP material. By covering it with FRP material, the amount of steel can be reduced, and the floating artificial reef 1 can be made lighter.

[0036] The internal structure of the floating artificial reef 1, which is constructed by welding the outer edge of the deck 11 to the upper part of the outer shell 10 and welding the outer edge of the shell base 12 to the lower part of the outer shell 10, is shown in Figures 5 and 6.

[0037] At the center of the outer shell 10, a main column 13 made of a hollow steel pipe is provided, with its upper end welded to the lower surface of the deck member 11a and its lower end welded to the upper surface of the shell bottom member 12a.

[0038] The main column 13 penetrates the shell bottom member 12a, and the mooring ring 9 is attached to the lower end of the main column 13.

[0039] Inside the outer shell 10, a cylindrical partition wall 14 is provided, spaced inward from the shell member 10a, to surround the main column 13 (see also the right-hand portion in Figure 2).

[0040] The cylindrical partition wall 14 is composed of multiple H-shaped steel column members 14a arranged in a ring shape at intervals around the outer shell 10, and multiple flat steel wall plates 14b stretched between the column members 14a. Therefore, the cylindrical partition wall 14 is formed in a planar polygonal shape.

[0041] Each column member 14a is provided by welding its upper end to the main member 11b of the deck member 11a and welding its lower end to the frame member 12b of the shell base 12.

[0042] Each wall panel 14b is welded to the flanges of the column members 14a located on the left and right sides at both ends, to the reinforcing plate 11c of the deck member 11a at the upper end, and to the frame member 12b of the shell base 12 at the lower end.

[0043] In the illustrated example, the cylindrical septum 14 is formed in a planar octagonal shape to match the shape of the frame member 12b of the shell base 12. In other words, the frame member 12b is formed to match the planar outer shape of the cylindrical septum 14. The cylindrical septum 14 may be a planar polygon, not necessarily an octagon.

[0044] Inside the cylindrical bulkhead 14, below the deck 11 and above the work platform 12e, a storage space 15 is partitioned off, which is used for the installation of various equipment, maintenance work on this equipment, and storage space, and also serves as a work space during the construction of the floating artificial reef 1.

[0045] This storage space 15 is provided with flat vertical walls made of flat wall panels 14b. Access to the storage space 15 is possible through the hatch on the deck 11.

[0046] An annular truss structure 16 is provided between the cylindrical partition body 14 and the shell member 10a of the outer shell body 10.

[0047] As shown in Figures 5 and 6, the annular truss structure 16 is composed of inner chord members 16a provided between column members 14a constituting the cylindrical partition wall body 14, ring-shaped rib members 10b constituting the outer shell body 10 and acting as outer chord members relative to the inner chord members 16a, and a plurality of lattice members 16b provided between the inner chord members 16a and the ring-shaped rib members 10b at intervals in the circumferential direction of the cylindrical partition wall body 14 and the outer shell body 10.

[0048] In other words, the annular truss structure 16 is constructed by using cylindrical partitions 14 and outer shells 10 as chord members, and stretching multiple lattice members 16b between these chord members 10 and 14. Steel angle members are used for the lattice members 16b.

[0049] On the outer surface of the cylindrical partition wall 14 facing the inner surface of the shell member 10a, H-shaped steel inner chord members 16a are welded in multiple stages, aligned with the height of the ring-shaped rib members 10b of the shell member 10a, and arranged in an annular (octagonal) shape along the circumferential direction of the cylindrical partition wall 14.

[0050] Specifically, the inner chord member 16a is provided by welding both ends in the longitudinal direction to a pair of adjacent column members 14a, and by welding the flange to the wall member 14b.

[0051] In this embodiment, the ring-shaped rib member 10b and the inner chord member 16a are arranged in two stages, upper and lower, and therefore, even as an annular truss structure 16, they are provided in two stages, upper and lower. The inner chord member 16a also serves as a reinforcing member for the wall panel 14b.

[0052] All lattice members 16b are of equal length, with one end welded to the column member 14a and the other end welded to the ring-shaped rib member 10b.

[0053] In the annular truss structure 16, the lattice members 16b are provided in pairs on both sides in an oblique direction from the column member 14a toward the ring-shaped rib member 10b, with the column member 14a as the nodal position, and are arranged to form an isosceles triangle with the ring-shaped rib member 10b as the base.

[0054] At the same time, the lattice members 16b are arranged in pairs, with the joint positions with the ring-shaped rib members 10b serving as nodal positions, extending diagonally from these nodal positions toward the adjacent column members 14a, to form an isosceles triangle with the inner chord member 16a as the base.

[0055] As a result, in the annular truss structure 16, the node positions are set at the positions of the column members 14a for the inner chord members 16a, and at the joint positions of the pair of lattice members 16b for the ring-shaped rib members 10b which are the outer chord members, and are set at equal intervals in the circumferential direction of the cylindrical partition body 14 and the outer shell body 10, respectively.

[0056] In this embodiment, the annular truss structure 16 is provided with additional lattice members 17 made of H-shaped steel.

[0057] As shown in Figure 6, the additional lattice members 17 are provided between adjacent lattice members 16b along the radial direction of the outer shell 10, connecting the column members 14a and the ring-shaped rib members 10b. Both ends of the additional lattice members 17 are welded to the column members 14a and the main longitudinal rib members 10c.

[0058] Figure 7 shows the node positions in the inner chord member 16a.

[0059] Of the pair of inner and outer flanges of the H-shaped steel column member 14a, the inner flange is abutted against the inner flange of a pair of H-shaped steel inner chord members 16a from both sides, and the outer flange is abutted against the outer flange of the same pair of inner chord members 16a from both sides via a plate member 19. In addition, one end of an additional lattice member 17 is abutted against the outer flange of the column member 14a, and one end of a pair of lattice members 16b is connected to the column member 14a via a pair of steel plate connecting plates 18 on both sides of the additional lattice member 17. The other end of the additional lattice member 17 is welded to the flange of the main longitudinal rib member 10c.

[0060] On the other hand, at the nodal positions of the ring-shaped rib member 10b which forms the outer chord member, the other ends of the pair of lattice members 16b are connected in a V-shape.

[0061] In the surface-type floating artificial reef 1 according to this embodiment, the cylindrical partition body 14 and the outer shell body 10 are used as chord members, and the outer shell body 10 and the cylindrical partition body 14 are connected by a plurality of lattice members 16b in the circumferential direction of the outer shell body 10 and the cylindrical partition body 14 to form an annular truss structure 16. This annular truss structure 16 ensures the necessary strength for the floating artificial reef 1 and reduces the amount of steel used, thereby making it lighter.

[0062] By incorporating the annular truss structure 16, it is possible to create a flat wall surface (wall plate 14b) inside the outer shell 10, and this flat wall surface can be used to partition the storage space 15.

[0063] In other words, the outer shell 10 is equipped with a cylindrical partition wall 14 with a planar polygonal shape inside, and various types of equipment can be attached and installed on the flat wall plates 14 that make up this cylindrical partition wall 14.

[0064] As a result, there is no need to construct a separate mounting wall within the storage space 15, so when constructing the floating fish reef 1, the internal space (storage space 15) can be freely utilized without movement restrictions, thereby improving constructability.

[0065] For example, the joining of the outer shell 10 to the bottom 12, and the joining of the deck 11 to the outer shell 10, can be carried out with good workability from the warehouse space 15.

[0066] By providing multiple ring-shaped truss structures 16 in the vertical direction of the outer shell 10, structural strength can be increased while saving space.

[0067] An additional lattice member 17 is provided to connect the cylindrical partition body 14 and the outer shell body 10. This allows the cylindrical partition body 14 to be effectively reinforced from the outside by the additional lattice member 17 without requiring a separate reinforcing member to be provided in the storage space 15 inside the cylindrical partition body 14. [Explanation of Symbols]

[0068] 1 Surface floating fish reef 5 sea level 10 Outer shell 11 Deck 12 Bottom of the shell 14. Cylindrical septum 14a Pillar material 14b Wall board 15 Storage Space 16. Annular Truss Structure 16b Lattice material 17 Additional lattice material

Claims

1. A surface-type floating artificial reef that is installed on the water surface in a floating state, An outer shell formed in the shape of a hollow cylinder, A deck is provided by sealing the upper part of the outer shell, The bottom of the shell is provided by sealing the lower part of the above-mentioned outer shell, It is provided inside the above-mentioned outer shell, and is constructed by attaching wall panels between columnar members arranged in a ring shape, and comprises a cylindrical partition wall that divides the storage space on the inside, A surface-type floating artificial reef characterized in that the cylindrical septum and the outer shell are used as chord members, and these outer shell and cylindrical septum are connected by a plurality of lattice members in the circumferential direction of the outer shell and cylindrical septum to form an annular truss structure.

2. The surface-type floating fish reef according to claim 1, characterized in that the wall plate is made of a flat material and the cylindrical partition body is formed in a planar polygonal shape.

3. The surface-type floating artificial reef according to claim 1 or 2, characterized in that a plurality of the annular truss structures are provided in the vertical direction of the outer shell.

4. The surface-type floating artificial reef according to claim 1 or 2, characterized in that the annular truss structure is provided with additional lattice members between adjacent lattice members, connecting the cylindrical partition body and the outer shell body.

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