JP2011001714A - Environmentally considered marine structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an environmentally considered marine structure constructed to create a place where a great number of fishes gather and seaweed grows thick around the marine structure such as a revetment, a quaywall or a pier.SOLUTION: The environmentally considered marine structure includes a marine structure body comprising steel pipe sheet piles 1, and a plurality of fish reef materials 3 mounted to the marine structure body. The fish reef material 3 includes a fish reef material body 3a formed in circular cylinder shape, and a feed culture base material 3b filled in the fish reef material body 3a. The fish reef material 3 is removably mounted to a side face part of the steel pipe sheet pile 1 by a fish reef material fixture 4. The fish reef material body 3a is formed of a resin material such as polyethylene resin, and the whole of the side part and bottom part is formed in grated shape or net shape. The fish reef material body 3a uses shells of scallops, pearl oysters, etc. for the feed culture base material 3b.

Description

  The present invention relates to an environment-friendly marine structure considering environmental improvement and symbiotic means (algae field creation, carbon dioxide reduction by seaweed, etc.), for example, an existing or newly established seawall made of steel pipe sheet piles, concrete caissons, etc. Applies to offshore structures such as quay or pier.

  In general, microorganisms and small creatures live on the coral reef with bumpy terrain and coral reefs, and seagrasses tend to flourish. For this reason, these surroundings are good feeding grounds for fish, and are good hideouts for fish. Therefore, many fish live naturally, and as a result, the sea is nurtured, and the sea is nurtured and greatly contributes to improving the environment.

  On the other hand, fish such as those found in the vicinity of fishing reefs are gathered on the flat bottom of the sea where such places are scarce, and around marine structures such as revetments and quays, where microorganisms and small organisms are difficult to live and seaweeds are difficult to grow. There is almost no need to take measures to improve the environment and symbiosis.

  Conventionally, attempts have been widely made to artificially subsidize concrete blocks and the like so that fish live in these places and seaweeds grow.

JP 2004-339858 A JP 2006-055163 A JP 2006-241754 A JP 2009-41194 A

  Most marine structures such as revetments, quay walls, piers, etc. are constructed of steel pipe sheet piles, concrete caissons, etc., so it is difficult for microorganisms and small organisms to adhere to them, and it is extremely difficult for fish such as those found around fishing reefs to live Few.

  On the other hand, marine structures such as existing and newly built revetments, quay walls, piers, etc. are required to have a structure that takes into account measures for environmental improvement and symbiosis.

  The present invention has been made in view of the current situation as described above, and has made it possible to create a place where many fish gather around marine structures such as revetments, quay walls, piers, etc., and seaweeds can flourish. The objective is to provide environmentally friendly offshore structures.

  The environmentally conscious marine structure according to claim 1 is an environmentally conscious marine structure comprising a marine structure body made of steel pipe sheet pile, steel sheet pile or concrete caisson and a plurality of reef materials attached to the marine structure body. The reef material is composed of a tubular reef material body formed in a tubular shape and a feed culture base material filled in the reef material body, and is detachable from the steel pipe sheet pile, steel sheet pile or concrete caisson by a reef material attachment tool. It is characterized by being attached.

  The present invention has created a place where small fishes have lived in the past, or where small fishes gather around marine structures such as seawalls where seaweeds are unlikely to grow, and various seaweeds grow. It is intended to make a great contribution to improving the environment around marine structures and reducing carbon dioxide.

  As a food culture base material, it is only necessary to be able to create an environment in which shrimp and crab bait fishing organisms adhere and create an environment in which these organisms grow, for example, shells such as oysters, scallops, akoya, a lump of porous concrete, Furthermore, crushed stones can be used.

  In particular, shells such as oysters, scallops, and oysters form a food culture bed where microorganisms, small organisms, and even seaweeds are likely to adhere by filling the body of the reef material, especially shrimp and crabs. Since many prey fish organisms are easily attached and many complex spaces are formed in the main body of the reef by overlapping shells and crushed stones, it is possible to create an environment suitable for the growth of many microorganisms and small organisms.

  Furthermore, since a variety of seaweeds adhere, grow and prosper, it also becomes a good retreat for small fish, which naturally increases seafood, and as a result, can greatly contribute to environmental improvement and carbon dioxide reduction.

  The fishing reef material main body only needs to have a shape that can be filled with a food culture substrate such as a shell, and the cylindrical shape is simple and easy to manufacture. Moreover, it is desirable to form from a corrosion-resistant metal such as stainless steel or a resin material such as polyethylene resin.

  The shape and structure of the fishing reef attachment is not particularly limited as long as it is resistant to corrosion, can be securely fixed to a marine structure such as a seawall, and can be removed freely. is not.

  The environment-friendly marine structure according to claim 2 is the environment-friendly marine structure according to claim 1, wherein the reef material body is formed in a lattice shape or a net shape.

  The entire side and bottom of the reef material body are formed in a lattice or net shape, and the feed culture substrate inside is kept in a submerged state so that the shrimp and crab feed fish organisms attached to the feed culture substrate Can promote growth. The reef material body can be formed of a resin such as a polyethylene resin.

  The environmentally conscious marine structure according to claim 3 is the environmentally conscious marine structure according to claim 1 or 2, characterized in that the feed culture substrate is made of shells.

  In particular, shells such as oysters, scallops, and oysters are often attached to shrimp and crabs, and many complex spaces are formed in the reef body by stacking shells and crushed stones. An environment suitable for the growth of microorganisms and small organisms can be created, and the use of shells is preferable because it reduces waste and promotes recycling.

  The present invention attaches a fishing reef material composed of a tubular fishing reef material main body and a feed culture base material such as a shell filled in the main body of the marine structure such as a seawall, a quay, and a pier pile, Until now, almost all small fish lived, and it was possible to create a place where small fish gathered around marine structures where seaweeds were unlikely to grow, and various seaweeds grew. It can contribute to improving the environment around the structure and reducing carbon dioxide.

  In this case, an anti-eutrophication function can be expected by organisms such as bivalves and sea squirts adhering to a food culture substrate such as shells that prey on phytoplankton taking in nitrogen and phosphorus in seawater.

  In addition, anti-eutrophication functions and photosynthesis can be expected due to the intake of seaweed nutrients attached to the feed culture substrate, and in some regions, microbial feces and carcasses can be expected to decompose due to an increase in sea cucumbers. Reduction of carbon dioxide and water purification effect can be expected. In addition, by using shellfish such as oysters, scallops, and pearl oysters as a feed culture substrate, it contributes to the reduction of waste and the promotion of recycling.

The reef material is installed in the side part of the steel pipe sheet pile which comprises a revetment and a quay wall, and shows the state currently fixed to the steel pipe sheet pile by the reef material attachment tool, (a) is a cross-sectional view, (b) is a side view. . The reef material is installed in the side part of the steel pipe sheet pile which comprises a revetment and a quay wall, and shows the state currently fixed to the steel pipe sheet pile by the reef material attachment tool, (a) is a cross-sectional view, (b) is a side view. . The reef material is installed in the side part of the steel pipe sheet pile which comprises a revetment and a quay wall, and shows the state currently fixed to the steel pipe sheet pile by the reef material attachment tool, (a) is a cross-sectional view, (b) is a side view. . The reef material is installed in the side part of the steel pipe sheet pile which comprises a revetment and a quay wall, and shows the state currently fixed to the steel pipe sheet pile by the reef material attachment tool, (a) is a cross-sectional view, (b) is a side view. . Revetment material is installed on the side of the U-shaped steel sheet pile that constitutes the revetment and quay, and shows a state where it is fixed to the U-shaped steel sheet pile with a fishing material attachment, (a) is a cross-sectional view, (b) is It is a side view. Revetment material is installed on the side of the concrete caisson that forms the revetment and the quay, and shows the state where the reef material is fixed to the side of the concrete caisson, with (a) a side view and (b) a longitudinal section. FIG. Revetment material is installed on the side of the concrete caisson that forms the revetment and the quay, and shows the state where the reef material is fixed to the side of the concrete caisson, with (a) a side view and (b) a longitudinal section. FIG. Revetment material is installed on the side of the concrete caisson that composes the revetment and quay, and shows the state where the reef material is fixed to the side of the concrete caisson, (a) is a cross-sectional view, (b) is a longitudinal section FIG. The reef material is installed on the side of the steel pipe sheet pile that constitutes the pier pile, and is shown fixed to the side of the steel pipe sheet pile by the reef material attachment tool, (a) is a cross-sectional view, (b) is a side view. It is. The reef material is installed on the side of the steel pipe sheet pile that constitutes the pier pile, and is shown fixed to the side of the steel pipe sheet pile by the reef material attachment tool, (a) is a cross-sectional view, (b) is a side view. It is. The reef material is installed on the side of the steel pipe sheet pile that constitutes the pier pile, and is shown fixed to the side of the steel pipe sheet pile by the reef material attachment tool, (a) is a cross-sectional view, (b) is a side view. It is.

  1 (a) and 1 (b) show an embodiment of the present invention. In the figure, reference numeral 1 denotes a steel pipe sheet pile constituting a marine structure main body such as a revetment, a quay, a pier, etc. They are arranged adjacent to each other in the diametrical direction and are connected to each other via a joint 2.

  A plurality of reef materials 3 and 3 are disposed between adjacent steel pipe sheet piles 1 and 1 in parallel to the direction perpendicular to the axis of the steel pipe sheet pile 1 and vertically in the axial direction of the steel pipe sheet pile 1. The sheet piles 1 and 1 are fixed to the sheet piles 1 through fishing reef material attachments 4 respectively.

  The reef material 3 is composed of a reef material body 3a and a feed culture substrate 3b, and the reef material body 3a is formed in a cylindrical shape from a corrosion-resistant metal such as stainless steel or a resin material such as polyethylene resin, and its side portion. In addition, the entire bottom is formed in a lattice shape or a mesh shape.

  The feed culture substrate 3b is a shell such as scallop or pearl oyster, and is filled in the fishing reef material body 3a. Shrimp and crab prey fishing organisms tend to adhere to shells such as scallops and oysters, and many complex spaces are formed in the reef material body 3a by overlapping the shells, so that many microorganisms and small organisms Create a suitable environment for the growth of

  Furthermore, a variety of seaweeds attach, grow and proliferate to form a hideout for small fish, increasing the number of seafood naturally, resulting in environmental improvements and carbon dioxide reduction.

  The fishing reef material attachment 4 is formed in a rectangular frame shape having a lateral dimension straddling between the adjacent steel pipe sheet piles 1 and 1, and the reef materials 3 and 3 are placed in the middle of the upper frame 4 a and the lower frame 4 b. Storage recesses 5 and 5 are formed so as to be recessed toward the steel pipe sheet pile 1 side.

  Further, the upper frame 4 a and the lower frame 4 b of the fishing reef material mounting tool 4 are bolted to the side surfaces of the steel pipe sheet piles 1 and 1 by a plurality of mounting bolts 6. The reef materials 3 and 3 are placed in the upper and lower storage recesses 5 and 5 and fixed to the upper frame 4a and the lower frame 4b by fixing bands 7 and 7 made of stainless steel or synthetic resin.

  In addition, when the reef material attachment 4 is protruded from the existing steel pipe sheet pile 1, the attachment bolt 6 is stud welded to the side surface of the steel pipe sheet pile, while the reef material attachment 4 is protruded from the new steel pipe sheet pile 1. In this case, the mounting bolt 6 may be fixed to a bolt hole formed in the side surface portion of the steel pipe sheet pile 1 with a fixing nut.

  2 (a) and 2 (b) show that in the embodiment shown in FIGS. 1 (a) and 1 (b), the bottom plate 4d for receiving the reef material 3 is provided in the storage recess 5 of the lower frame 4b to drop off the reef material 3 It is intended to prevent.

  According to the embodiment of FIG. 1 and FIG. 2, the fishing reef materials 3, 3 are particularly installed between the adjacent steel pipe sheet piles 1, 1 so as to enter between the adjacent steel pipe sheet piles 1, 1. It can make shade and stagnation and create a good habitat for small fish.

  3 (a) and 3 (b) show another embodiment of the present invention, in which a plurality of reef materials 3 and 3 are arranged between adjacent steel pipe sheet piles 1 and 1 in parallel in the direction perpendicular to the axis of the steel pipe sheet pile 1, and The steel pipe sheet pile 1 is arranged vertically in the axial direction. Each reef material 3, 3 is fixed to the steel pipe sheet pile 1, 1 by a plurality of reef material attachments 8.

  The fishing reef material mounting tool 8 includes a fishing reef material gripping portion 8a formed in a circular ring shape and an anchor portion 8b protruding from one side of the fishing reef material gripping portion 8a. The reef material gripping portions 8a are formed to have an inner diameter through which the reef material 3 can be inserted, and a plurality of reef material attachment holes 8c are formed at predetermined intervals in the circumferential direction.

  Further, the anchor portion 8b is stud-welded to the side surface portion of the steel pipe sheet pile 1 or protrudes horizontally to the side portion of the steel pipe sheet pile 1 by a method such as fixing to an attachment hole formed in the side portion of the steel pipe sheet pile 1 with a fixing nut. It is installed.

  The fish reef material 3 is installed in the fish reef material gripping portion 8a and is fixed by an attachment metal or a binding wire penetrating the fish reef material attachment hole 8c. In this way, each reef material 3 is fixed by a plurality of reef material attachments 8 at both upper and lower ends and an intermediate portion.

  4 (a) and 4 (b) show the fishing reef material in the embodiment shown in FIGS. 3 (a) and 3 (b). The fishing reef material attachment 8 for fixing the lower end of the reef material 3 is attached to the fishing reef material gripping portion 8b. The bottom portion for receiving 3 is provided in a cup shape to prevent the fishing reef material 3 from falling off.

  According to the embodiment of FIG. 3 and FIG. 4, each reef material 3 is individually fixed to the steel pipe sheet pile 1 by the reef material attachment 8, so that the position where each reef material 3 is fixed can be freely set. it can. Further, the fishing reef material attachment tool 8 is easy to manufacture because it has a simple shape, and the fishing reef material can be installed at low cost with a small number of attachment tools.

  5 (a) and 5 (b) show another embodiment of the present invention. In the figure, reference numeral 9 denotes a U-shaped steel sheet pile that constitutes a marine structure body such as a revetment, a quay wall, and the U-shaped steel. The sheet piles 9 are arranged adjacent to each other in the width direction and are coupled to each other via the joint 2.

  In addition, a plurality of reef materials 3, 3 are arranged in parallel in the direction perpendicular to the axis of the U-shaped steel pipe sheet pile 9 in the recess 9 a between the adjacent U-shaped steel sheet piles 9, 9 and in the axial direction of the U-shaped steel pipe sheet pile 9. It is arranged vertically. Each reef material 3, 3 is fixed to the U-shaped steel pipe sheet piles 9, 9 by a reef material attachment 4 and a fixing band 7.

  In addition, providing the bottom plate which receives the reef material 3 in the storage recess 5 of the lower frame 4b to prevent the reef material 3 from falling off is the same as the embodiment shown in FIGS. 2 (a) and 2 (b). is there.

  According to this embodiment, similar to the embodiment of FIG. 1 and FIG. 2, the reef material 3, 3 is installed so as to enter the recess between the adjacent steel pipe sheet piles 1, 1. A shade and stagnation can be created between the sheet piles 1 and 1 to create a good habitat for small fish.

  6 (a) and 6 (b) show another embodiment of the present invention. In the figure, reference numeral 10 denotes a concrete caisson that constitutes a marine structure body such as a revetment and a quay wall. A fishing reef material attachment 11 is attached to the side wall, and a plurality of reef materials 3 and 3 are horizontally fixed on the reef material attachment 11 in a plurality of stages in the vertical direction.

  The reef material attachment tool 11 is formed in a rectangular frame shape having a lateral dimension substantially the same as the length of the reef material 3, and an upper frame 11 a, a lower frame 11 b, and a left and right vertical frame 11 c are arranged on the side of the concrete caisson 10. It is fixed by anchor bolts 12.

  Then, both end portions and intermediate portions of each reef material 3 are fixed to the left and right vertical frames 11c and 11d by the fixing bands 7, respectively.

  When the concrete caisson 10 is newly installed, an insert (female screw) is embedded in the wall surface of the concrete caisson 10 and the anchor bolt 12 is tightened. On the other hand, when the concrete caisson 10 is already installed, If a chemical anchor is driven and the anchor bolt 12 is fastened thereto, operations such as drilling and driving for fastening the anchor bolt 12 can be omitted.

  7 (a) and 7 (b) show the embodiment shown in FIGS. 6 (a) and 6 (b), in which the reef material attachment tool 11 to which the reef material 3 is attached is formed on the side wall of the concrete caisson 10. The case where it attaches in the recessed part 10a is shown, According to this embodiment, the some reef material 3 can be attached so that it may not protrude from the wall surface of the concrete caisson 10. FIG.

  According to the embodiment of FIGS. 6 and 7, a necessary number of fishing reef materials 3 can be firmly attached to the side wall portion of the concrete caisson by one fishing reef material attachment tool 8. In particular, according to the embodiment of FIG. 7, the fishing reef materials 3, 3 are installed in the recesses between the adjacent steel pipe sheet piles 1, 1, so You can make stagnation and create a good habitat for small fish.

  8 (a) and 8 (b) show another embodiment of the present invention, in which a plurality of fishing reef materials 3 and 3 are arranged in a plurality of stages horizontally on the wall surface of the concrete caisson 10, and each fishing reef material 3 , 3 are fixed to the wall surface of the concrete caisson 10 by a plurality of fishing reef material attachments 8.

  In this case, when the concrete caisson 10 is newly installed, an insert (female screw) is embedded in the wall surface portion of the concrete caisson 10 and the fishing reef attachment fixture 8 is coupled thereto, whereas when the concrete caisson 10 is already installed, the concrete caisson 10 If a chemical anchor is driven into the wall portion of the shore and the reef material attachment 8 is coupled thereto, operations such as drilling and driving for projecting the reef refuge attachment 8 can be omitted.

  Moreover, since the reef material 3 is individually fixed to the side wall part of the concrete caisson 10 by the reef material attachment tool 8, the position which fixes each reef material 3 can be set freely. Further, the fishing reef material attachment tool 8 is easy to manufacture because it has a simple shape, and the fishing reef material can be installed at low cost with a small number of attachment tools.

  9 (a) and 9 (b) show another embodiment of the present invention. In the figure, reference numeral 13 denotes a steel pipe sheet pile constituting a pier pile, and a plurality of fishing reef materials 3 are provided on the outer periphery of the steel pipe sheet pile 13. Are arranged in parallel to the circumferential direction of the steel pipe sheet pile 13 and vertically in the axial direction of the steel pipe sheet pile 13. Each reef material 3 is fixed to the steel pipe sheet pile 13 by a plurality of reef material attachments 8.

  In this case, the upper and lower end portions and the middle portion of each reef material 3 are fixed to the steel pipe sheet pile 13, and the reef material attachment 8 for fixing the lower end portion of the reef material 3 is received by the reef material gripping portion 8b. It is the same as the embodiment illustrated in FIGS. 3A and 3B that the bottom portion is provided in a cup shape to prevent the fishing reef material 3 from falling off.

  Moreover, since the reef material 3 is individually fixed to the side wall part of the steel pipe sheet pile 13 by the reef material attachment tool 8, the position which fixes each reef material 3 can be set freely. Further, the fishing reef material attachment tool 8 is easy to manufacture because it has a simple shape, and the fishing reef material can be installed at low cost with a small number of attachment tools.

  10 (a) and 10 (b) show another embodiment of the present invention, and in the figure, a plurality of reef materials 3 are arranged in parallel in the circumferential direction on the outer periphery of the steel pipe sheet pile 13 constituting the pier pile. And it arrange | positions perpendicularly | vertically in the axial direction of the steel pipe sheet pile 13. FIG. Each reef material 3 is fixed to a steel pipe sheet pile 13 by a reef material attachment 14.

  The fishing reef material mounting tool 14 includes a fishing reef material gripping portion 14a formed in a circular ring shape and a belt sling 14b to which the fishing reef material gripping portion 14a is attached at predetermined intervals.

  The reef material gripping portions 14a are formed to have an inner diameter through which the reef material 3 can be inserted, and a plurality of reef material attachment holes 14c are formed at predetermined intervals in the circumferential direction. Further, a fastening bracket 14c is attached to the belt sling 14b.

  And the belt sling 14b is wound around the steel pipe sheet pile 13, and it is being fixed so that it may not fall by tightening the clamp | tightening metal fitting 14c. Each reef material 3 is installed in the reef material gripping portion 14a and is fixed to the reef material gripping portion 14a by an attachment metal or a binding material penetrating the reef material mounting hole 14c.

  The reef material gripping portion 14a and the belt sling 14b are integrally formed of a metal such as stainless steel or a synthetic resin.

  Further, the reef material 3 is fixed to the steel pipe sheet pile 13 at both the upper and lower end portions and the middle portion of the reef material 3, and the reef material gripping portion 14 b of the reef material attachment 14 for fixing the lower end portion of the reef material 3. It is the same as that of embodiment shown in FIG. 3 (a), (b) that the bottom part which receives is made into cup shape, and the fall of the reef material 3 was prevented.

  According to this embodiment, a large number of reef materials 3 can be installed using the belt sling 14b, and even when a plurality of steel pipe sheet piles 13 having different diameters are mixed, the belt sling 14b is provided by the fastening bracket 14c. This can be dealt with by tightening.

  11 (a) and 11 (b) show a plurality of fishing reef materials 3 by a reef material mounting tool 14 having a mounting plate 14c instead of the belt sling 14b in the embodiment shown in FIGS. 10 (a) and 10 (b). Shows a case where is fixed to the outer periphery of the steel pipe sheet pile 13.

  The attachment plate 14c in this case has a height substantially equal to the length of the fishing reef material 3, is formed in an arc shape circumscribing the steel pipe sheet pile 13, and joints 14d and 14d are formed at both ends. The reef material gripping portion 14a is fixed to the mounting plate 14c by welding or an adhesive.

  The fishing reef attachment 14 is attached to the side of the steel pipe sheet pile 13 so as to embrace the steel pipe sheet pile 13, and is fixed by bolting the joints 14d with a plurality of connecting bolts.

  It should be noted that the upper and lower end portions and the middle portion of the reef material 3 are fixed, and the bottom portion for receiving the reef material 3 is provided in the reef material gripping portion 14b for fixing the lower end portion of the reef material 3 to make a cup shape. Thus, the fact that the fishing reef material 3 is prevented from falling off is the same as the embodiment shown in FIGS. 3 (a) and 3 (b).

  According to this embodiment, a large number of fishing reef materials 3 can be installed using the mounting plate 14c, and by adjusting the quantity of the reef material gripping portions 14a according to the outer diameter of the steel pipe sheet pile, An appropriate number of fishing reef materials 3 according to the outer diameter of 13 can be installed.

The present invention creates a place where small fish can live, or where small fish gather around marine structures such as seawalls, quays, and piers where seaweeds are unlikely to grow, and where various seaweeds grow. It can contribute to environmental improvement and reduction of carbon dioxide around marine structures.
Can.

DESCRIPTION OF SYMBOLS 1 Steel pipe sheet pile 2 Joint 3 Reef material 3a Reef material body 3b Feed culture base material 4 Reef material attachment tool 4a Upper frame 4b Lower frame 4c Vertical frame 4d Bottom plate 5 Storage recessed part 5a Bottom part 6 Fixing bolt 7 Fixed band 8 Reef material attachment tool 8a Reef material holding portion 8b Anchor portion 8c Reef material mounting hole 9 U-shaped steel sheet pile 10 Concrete caisson 11 Reef material mounting device 12 Anchor bolt 13 Steel pipe sheet pile 14 Reef material mounting device 14a Reef material holding portion 14b Belt sling 14c Fishing reef material mounting hole 14d Fitting

Claims (3)

  In an environmentally conscious offshore structure consisting of a marine structure body made of steel pipe sheet pile, steel sheet pile or concrete caisson and a plurality of reef materials attached to the marine structure body, the reef material is a fishing reef material formed in a cylindrical shape An environmentally friendly ocean characterized by comprising a main body and a feed culture base material filled in the main body of a reef material, and is detachably attached to the steel pipe sheet pile, steel sheet pile or concrete caisson by a reef material attachment tool. Structure.   The environment-friendly marine structure according to claim 1, wherein the reef material is configured in a lattice shape or a net shape.   The environment-friendly marine structure according to claim 1 or 2, wherein the feed culture base material is a shell.

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