JP2007177397A - Panel and its installation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the sticking of an aquatic living thing to the wall surface of an underwater structure. <P>SOLUTION: This panel has a square plate-like panel body 2 of applying an evasive substance of the aquatic living thing to at least the whole surface as antifouling paint and connecting pieces X1 and Y1 integrally formed at the peripheral edge of at least one side of the panel body. The connecting pieces are formed on the reverse surface side of the panel body with a step height corresponding to the thickness of the panel body, and the peripheral edge of the other side of the panel body is formed as connecting edges X2 and Y2 superposed on the surface side of connecting pieces of the other panel. Installation holes 4 for inserting a fixture such as an anchor bolt are formed in a coincident position of the connecting pieces and a connecting edge, respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a panel that is attached to a wall surface of an underwater structure in order to prevent attachment of aquatic organisms, and an attachment method for attaching the panel to the surface of the underwater structure without a gap.

  In various underwater structures such as seawater intake facilities in power plants, there are concerns that a large amount of aquatic organisms (marine organisms) such as barnacles and mussels will adhere to the surface, resulting in functional deterioration and functional impairment. is there. In the past, there was no choice but to scrape and remove attached aquatic organisms on a regular basis.Recently, various repellent substances that aquatic organisms dislike have been developed and applied in advance as antifouling paints to the surface of underwater structures. By doing so, prevention and suppression of the attachment of aquatic organisms are being carried out.

However, conventionally, since repellent substances are applied directly to the surface of an underwater structure as an antifouling paint, the application work cannot be performed directly on the wall surface under the water surface, and the entire application surface is dry. If it is not possible, it is not applicable.
Even if the application work can be performed in a dry state, it is usually necessary to install a large scaffold on the application surface, and in order to maintain the effect of repellent substances over a long period of time, an antifouling paint is required. Since it is necessary to re-apply coating with sufficient thickness, the construction period will be long, and in any case, it will be necessary to repaint antifouling paint in about 1 to several years. In this case, troublesome preparatory work of scraping off already attached aquatic organisms is also necessary.
From the above, the conventional application method in which the aquatic organism repellent material is applied directly to the surface of the underwater structure as an antifouling paint has not necessarily been easily implemented in terms of construction cost and workability.

Therefore, for example, as shown in Patent Document 1, a method of applying an antifouling paint to the surface of the panel in advance and attaching the panel to the wall surface of the underwater structure has also been proposed. According to such a construction method, it is possible to attach the panel to an underwater wall surface, so there is no need to dry the mounting surface, and panel installation work and replacement work are also easier than conventional coating work. Since it can be easily performed, it is likely to become widespread in the future.
JP 2003-342928 A

  However, in the construction method shown in Patent Document 1, it is difficult to completely cover the mounting surface because there is room for a slight gap between the panels, and therefore it is not always possible to ensure sufficient antifouling performance over the entire surface. Sometimes there is a need for improvement. Moreover, since it is not always easy to attach the above panel to the inner surface of a large-diameter intake pipe for taking seawater, for example, the form of the panel for enabling application to such a case, Improvements in the mounting method were also desired.

  In view of the above circumstances, the panel of the present invention is a plurality of panels that are mounted side by side so as to cover the surface of the underwater structure so as to prevent the attachment of the aquatic organism to the surface of the underwater structure. A rectangular plate-like panel body in which a substance is applied as an antifouling paint at least over the entire surface; and a connecting piece integrally formed on the peripheral edge of at least one side of the panel body, Formed on the back side of the panel body with a step corresponding to the thickness of the panel body, the peripheral edge of the other side where the connection piece of the panel body is not formed is the surface of the connection piece of another panel that is adjacently arranged It is formed as a connecting edge portion that is overlapped on the side, and the connecting piece and the connecting edge portion are in a position that matches the connecting edge portion and connecting piece of another panel that is arranged adjacent to each other. It is characterized in that the mounting hole fixture such Nkaboruto is inserted is formed.

  In the panel of the present invention, a buffer material corresponding to the thickness of the connecting piece is attached to the back side of the panel body except for the back side of the connecting edge, or the panel body and the connecting piece are formed into a flat plate shape that can be bent by a flexible material. It is preferable to perform integral molding.

  The panel mounting method of the present invention is a method for mounting the above panels side by side without any gaps so as to cover the entire surface of the underwater structure. First, anchor bolts are attached to the surface of the underwater structure. The panel is attached to the surface of the underwater structure by passing an anchor bolt through a mounting hole formed in the connecting piece, and then another panel adjacent to the panel is formed on the connecting edge. The panel is mounted on the surface of the underwater structure by passing the anchor bolt through the mounting hole, and the connection edge portion is overlapped on the connection piece of the panel that has been previously mounted. By screwing a nut through a washer coated with paint and fastening it, the connecting pieces and connecting edges of these two panels are overlapped and connected together underwater. It is characterized in that fixed to the surface of the creation.

  In the mounting method of the present invention, a nut with a locking mechanism is used as a nut to be screwed to the anchor bolt, and a cap coated with an antifouling paint is attached to the nut screwed portion, and the cap is submerged in water. It is preferable that the nut screwed portion is fixed with the resin and concealed with the cap by filling and curing the resin of the mold. In addition, it is preferable to use a combination of four types of panels having the same overall shape and dimensions except that the connecting pieces and the connecting edges are formed at different positions so that they can be connected to each other without any gaps and steps.

  According to the panel of the present invention, the connecting pieces and the connecting edge portions of the adjacent panels are overlapped and attached to the mounting surface in an integrally connected state, so that a gap is generated between the panels. Thus, reliable antifouling performance can be ensured on the whole. Moreover, the unevenness | corrugation of a mounting surface and an unevenness | corrugation can be absorbed by attaching a shock absorbing material to the back surface side. Furthermore, by using a panel that can be bent with a flexible material, it can be attached to a curved surface such as the inner surface of the intake pipe without any trouble.

  According to the mounting method of the present invention, the panels manufactured in advance are sequentially arranged, and the coupling pieces and the coupling edge portions are passed through the anchor bolts, and the nuts are screwed onto the anchor bolts through the washers. Each panel can be easily attached with good workability without fail and by repeating simple operations. In particular, by using a nut with a locking mechanism and attaching a cap to the nut screwing portion and fixing it with resin, a complete locking prevention effect can be obtained. Further, by using a combination of four types of panels having different connection pieces and connection edge portions, it can be applied to various types of attachment surfaces, and is particularly suitable for attachment to the inner surface of a pipeline.

  An embodiment of the present invention will be described with reference to FIGS. In the present embodiment, in order to prevent the attachment of aquatic organisms to the inner surface of a large-diameter intake pipe 1 as shown in FIG. Panel A, B, C, D) is an application example. The panel P in the present embodiment is basically a panel in which an aquatic organism repellent material is applied as an antifouling paint on the entire surface in the same manner as the panel shown in Patent Document 1, but the overall shape is shown in FIG. It is formed in a thin rectangular flat plate shape as shown in FIGS. 4 to 7, and a relatively flexible material such as FRP that can be slightly curved is used as the material, as shown in FIG. When attaching each panel P, it curves so that it may closely_contact | adhere to the inner surface of the water intake pipe 1, and it shall connect and fix without a clearance gap between the peripheral parts of the panel P attached adjacently.

  Therefore, in this embodiment, the four types of panels P shown in FIGS. 4 to 7 are used in combination. Each of these panels P has a rectangular plate-like panel body 2 as a main body, and connecting pieces X1 and Y1 are integrally formed on any peripheral portion of the panel body 2, and such connecting pieces X1 and Y1 are formed. The other peripheral portions that are not formed are the connecting edges X2 and Y2 that are overlapped with the connecting pieces X1 and Y1. The four types of panels P have the same overall shape and dimensions except that the positions and number of the connecting pieces X1, Y1 and the connecting edge portions X2, Y2 are different from each other.

  Hereinafter, the four types of panels P in the present embodiment will be described. When it is necessary to distinguish the four types of panels P, they are particularly referred to as panels A, B, C, and D, respectively. A), P (B), P (C), and P (D) are attached. In the following description, dimensions are given to the respective parts so that the shapes of the panels A to D and their connection structures can be easily understood. However, the dimensions are merely examples, and the present invention is not limited to such dimensions. Of course, it is not intended to be limited to those.

Each of the panels A to D in the present embodiment is attached to the inner surface of the water intake pipe 1 having an inner diameter of 3300 mmφ, with 8 sheets arranged as a set so as to form one ring without any gaps. 1408 mm, the long side dimension is 2100 mm, and the thickness of the panel body 2 is 3 mm. In both cases, a connecting piece X1 having a width of 100 mm is formed on one short side of the panel body 2, and the peripheral edge of the other short side is directly connected to the connecting piece X1 of the other panel. Part X2.
The connecting piece X1 is formed on the back side of the panel body 2 with a step corresponding to its thickness (that is, 3 mm) from the surface of the panel body 2, and therefore, the connecting piece X1 and the connecting edge X2 of the two panels. Are overlapped with each other smoothly without any steps or gaps. Note that the thickness of the connecting piece X1 itself is also 3 mm, which is the same as the thickness of the panel body 2, and therefore the thickness of the overlapping portion is 6 mm.

Moreover, the connection piece Y1 or connection edge part Y2 similar to said connection piece X1 or connection edge part X2 is formed in the side edge part of each panel AD as follows, respectively.
In the panel A shown in FIG. 4, connecting pieces Y <b> 1 are formed on both long sides of the panel body 2.
In the panel B shown in FIG. 5, the connecting piece Y1 is formed only on one long side of the panel body 2, and the peripheral edge of the other long side is overlapped with the connecting piece Y1 of the other panel. Y2.
In the panel C shown in FIG. 6, a connecting piece Y1 is formed on one long side opposite to the panel B, and a peripheral edge portion on the other long side is a connecting edge Y2.
In the panel D shown in FIG. 7, the peripheral portions of both long sides are connected edge portions Y <b> 2 that overlap the connecting pieces Y <b> 1 formed on the panels A to C.

  And the attachment hole 4 for letting the anchor volt | bolt 3 each pass in the center position of the connection direction X1 and Y1, connection edge part X2, Y2, and the panel main body 2 of each panel AD. . The mutual interval between the mounting holes 4 is based on 654 mm in the short side direction as shown in FIGS. 4 to 7 and is based on 665 mm and 670 mm in the long side direction. However, as shown in FIG. Are formed as elongated holes that are slightly longer in the width direction of each panel, and the mounting holes 4 located at the side edges of each panel are slightly inwardly decentered with respect to the reference dimension line. Yes.

  Moreover, the shock absorbing material 4 is attached to the panel main body 2 back surface side of each panel AD except for the back surface side of connection edge part X2, Y2. The thickness of the cushioning material 5 is 3 mm, the same as the thickness of the connecting pieces X1 and Y1, so that the total thickness of the panel including the cushioning material 5 is 6 mm, and the back side of the panel excludes the back side of the connecting edge portions X2 and Y2. And a flat surface with no steps. As the buffer material 5, a flexible material that can absorb unevenness and unevenness of the mounting surface, for example, a porous material such as a sponge-like material or a polystyrene foam, or a rubber material can be suitably used.

  In this embodiment, as shown in FIG. 1, the above-mentioned panels A to D are each attached to the inner surface of the intake pipe 1 as one ring by using a total of eight sheets as a set, and the panel for one ring. A to D are sequentially attached over the entire length of the intake pipe 1 from the downstream side toward the upstream side. With reference to FIG. 2 and FIG. 3, about the example of allocation of each panel AD in that case, and the work procedure in the case of attaching these panels AD by the underwater work with respect to the inner surface of the existing intake pipe 1 explain.

FIG. 2 is a development view showing an example of panel allocation to the lower half of the intake pipe 1. Here, the panel D is arranged at the bottom, the panel A is arranged on the left side, and the panel B is arranged on the left side. A panel A is arranged on the right side of the bottom panel D, and a panel C is arranged on the right side. Further, in addition to the above five sheets arranged in the lower half, panel D is arranged on the top, panel B on the left side, and panel C on the right side, as shown in FIG. A total of 8 panels A to D form one ring.
By arranging the panels A to D as described above, the connection pieces Y1 and the connection edge portions Y2 of both adjacent panels are integrally connected to the inner surface of the intake pipe 1 in a state where they are naturally overlapped. Further, the same type of other panels A to D are arranged adjacent to each other on the upstream side of each of the panels A to D, and the connecting piece X1 and the connecting edge X2 are overlapped, so that the next one ring is the same. The entire inner surface of the water intake pipe 1 is covered with the panels A to D without any gaps by sequentially repeating the above operations toward the upstream side.

As an operation procedure for attaching each panel A to D to the inner surface of the existing intake pipe 1 by underwater operation, first, if aquatic organisms have already adhered to the surface of the intake pipe 1, it is removed. After that, the anchor bolt 3 is marked and the anchor bolt 3 is driven. The anchor bolt 3 can be driven by driving a submerged stud bolt with a special gun when the inner surface of the intake pipe 1 as a mounting surface is a steel surface. An anchor may be used.
Then, for example, the panel A is arranged at a position slightly on the right side of the bottom of the intake pipe 1, and the anchor bolts 3 are respectively passed through the connecting pieces Y1 and the mounting holes 4 formed in the central portion. First, as shown in FIG. As shown, a nut 7 is screwed into a mounting hole 4 in the center via a washer 6 and temporarily tightened. As a result, the panel A naturally curves and adheres to the inner surface of the intake pipe.
As shown in FIG. 2, the panel D is finally arranged on the left side of the panel A. The fixing is performed by fixing the connecting piece Y1 of the panel A in which the connecting edge Y2 of the panel D is first arranged. The anchor bolt 3 is passed through the mounting hole 4 while being superposed on it, and a nut 7 is screwed onto the anchor bolt 3 with a washer 6 as shown in FIG.
At this time, a so-called U-nut with a locking mechanism is used as the nut 7, and a cap 8 made of, for example, FRP is attached to the nut screwed portion as shown in FIG. The resin (that is, adhesive) 9 is filled. As a result, the entire nut screwing portion is concealed by the cap 8 and is fixed by the hardening of the resin 9, so that complete locking and prevention of nut dropout are achieved. Of course, an antifouling paint is applied in advance to at least the outer surfaces of the washer 6 and the cap 8 to prevent aquatic organisms from adhering thereto.

  According to this embodiment, by attaching each of the panels A to D, the connecting piece Y1 and the connecting edge portion Y2, and the connecting piece X1 and the connecting edge portion X2 are sequentially overlapped and connected. The entire inner surface of the intake pipe 1 can be completely covered with the panels A to D without any gaps and without any steps, and a complete antifouling performance can be ensured. Moreover, since the buffer material 5 is attached to the back surface of each panel A-D, even if there are some unevenness | corrugations and unevenness in the inner surface of the intake pipe 1, it can absorb without trouble, and the attachment hole 4 is long. Since it is a hole, it can cope with some dimensional errors of the intake pipe 1.

In addition, since four kinds of panels A to D manufactured in advance may be sequentially arranged while overlapping the connection edge portions X2 and Y2 on the connection pieces X1 and Y1 as described above, and fastened and fixed by the anchor bolt 3, as such. Excellent workability can be ensured by repeating simple operations, and construction can be performed in a short construction period even for intake pipes 1 having a large cross section and a long distance. At that time, if the construction is advanced from the downstream side toward the upstream side as in the above embodiment, the connection edge X2 of the upstream panel P is overlapped on the connection piece X1 of the downstream panel P. Since the lifting force due to the water flow does not act on each panel P, the panel P will not be lifted or separated even if the nut 7 is loosened.
Of course, each panel A to D is sufficiently thin and sufficiently light in weight so that it is easy to handle during construction, and has flexibility and is applied to the inner surface of the intake pipe 1 only by lightly pressing. Since it can be made to adhere | attach easily, it is excellent also in the construction property also in the point.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and appropriate design changes as listed below, for example, are possible.
The panel P (panels A to D) in the above embodiment can be bent by a flexible material on the premise that it is attached to the inner surface of the intake pipe 1, but it is bent when it is simply attached to a flat wall surface. In this case, it is of course possible to form a simple flat plate to have a desired strength and rigidity. Alternatively, it is conceivable to form in an arc shape with a desired curvature in advance or to be bent into an L shape in advance to be attached to a corner portion (protruding corner portion or entering corner portion) of the wall surface. Of course, the material of the panel body including the connecting piece is arbitrary, and if the cushioning material is unnecessary, it may be omitted. The antifouling paint may be applied to at least the entire surface of the panel body (including the connecting edge), but it is assumed that a slight gap will occur in the overlapping portion of the connecting edge and the connecting piece. If possible, it is safer to apply antifouling paints to the panel body, the small edge of the connecting piece, and even the back.
The present invention can be said to be optimal for attaching a panel to an intake pipe as an existing underwater structure by underwater work, but it is naturally applicable to a new structure and the mounting surface is dry. If possible, it can of course be attached by aerial work.
In the above-described embodiment, four types of panels A to D are used in combination, but this is not necessarily the case. In short, each panel P is connected to the connecting piece X1 and the connecting edge X2, and the connecting piece Y1 and the connecting edge Y2. As long as they are connected together without gaps, they can be attached together, and as long as they are attached, the shape of each panel (aspect ratio), the overall external dimensions, thickness dimensions, combinations of panels, layout, and installation The order of operations and the like may be arbitrarily set, and the combination of panels having different shapes and sizes is not hindered as long as they can be connected without a gap with the same structure.
Of course, the fixing method for the underwater structure is not limited to the direct fastening with the anchor bolt, and an appropriate fixing means with an appropriate fixture can be adopted, and the position and number of the mounting holes are arbitrary, but in any case It is preferable that sufficient fixing strength can be ensured and panel replacement can be performed relatively easily.

FIG. 2 is a view showing an embodiment of the present invention and showing a state in which a panel is attached to the inner surface of a water intake pipe. It is the expanded view which shows the allocation state of a panel similarly. FIG. 2 is a detailed view showing a structure of an attachment portion using anchor bolts, in which (a) is an enlarged view of a IIIa portion in FIG. 1, and (b) is an enlarged view of a IIIb portion in FIG. It is a figure which shows the shape of the panel A similarly. It is a figure which shows the shape of the panel B same as the above. It is a figure which shows the shape of the panel C similarly. It is a figure which shows the shape of the panel D similarly. It is a figure which shows the shape of the attachment hole in each panel similarly.

Explanation of symbols

P Panel P (A) Panel A
P (B) Panel B
P (C) Panel C
P (D) Panel D
X1, Y1 connecting piece X2, Y2 connecting edge 1 Intake pipe (underwater structure)
2 Panel body 3 Anchor bolt (mounting tool)
4 Mounting hole 5 Buffer material 6 Washer 7 Nut 8 Cap 9 Resin

Claims (6)

A panel that is mounted side by side so as to cover the surface of the underwater structure in order to prevent attachment of aquatic organisms to the surface of the underwater structure,
An aquatic organism repellent material having a rectangular plate-like panel body coated at least on the entire surface as an antifouling paint, and a connecting piece integrally formed on the peripheral edge of at least one side of the panel body;
The connecting piece is formed on the back side of the panel body with a step corresponding to the thickness of the panel body,
The peripheral portion of the other side of the panel body where the connecting piece is not formed is formed as a connecting edge portion that is overlapped with the surface side of the connecting piece of another panel that is adjacently disposed,
In addition, the connecting piece and the connecting edge have attachment holes through which attachments such as anchor bolts are inserted at positions where the connecting edges and connecting pieces of other adjacent panels are overlapped with each other. A panel characterized by being formed. The panel of claim 1,
A panel characterized in that a buffer material corresponding to the thickness of the connecting piece is attached to the back surface of the panel main body except for the back surface side of the connecting edge. The panel according to claim 1 or 2, wherein
The panel body and the connecting piece are integrally formed in a flat plate shape that can be bent by a flexible material. A panel mounting method for mounting the panel according to claim 1, 2 or 3 side by side so as to cover the entire surface of the underwater structure without gaps,
Attach anchor bolts to the surface of the underwater structure in advance
First, attach any panel to the surface of the underwater structure by passing anchor bolts through the mounting holes formed in the connecting piece,
Next, another panel adjacent to the panel is mounted on the surface of the underwater structure by passing the anchor bolt through a mounting hole formed in the connection edge, and the connection edge. On top of the connecting piece of the panel that was mounted first,
By screwing and fastening nuts to the anchor bolts through washers coated with antifouling paint, the connecting pieces and connecting edges of the two panels are overlapped and connected together. A panel mounting method characterized by being fixed to the surface of an underwater structure. A method for mounting a panel according to claim 4,
A nut with a locking mechanism is used as a nut to be screwed onto the anchor bolt, and a cap coated with antifouling paint is attached to the nut screwed portion, and an underwater-curing resin is filled in the cap and cured. And attaching the whole nut screwing portion with the resin and concealing with the cap. It is the attachment method of the panel of Claim 4 or 5, Comprising:
Only the formation positions of the connecting pieces and the connecting edge portions are different, and the overall shape and dimensions are made equal, and each of the four types of panels A, B, C, and D comprising the following configurations (1) to (5) is combined A panel mounting method characterized by using.
(1) Each of the panels A to D is a rectangular flat plate, and all have a connecting piece X1 formed on one short side of the panel main body, and the peripheral portion of the other short side is connected to the connecting piece X1. The connecting edge X2 can be overlapped.
(2) In the panel A, connecting pieces Y1 are formed on both long sides of the panel body.
(3) In the panel B, a connecting piece Y1 is formed on one long side of the panel body, and a peripheral edge of the other long side is a connecting edge Y2 that can be overlapped with the connecting piece Y1.
(4) In the panel C, a connecting piece Y1 is formed on one long side opposite to the panel B, and the peripheral edge of the other long side is superposed on the connecting piece Y1. Has been.
(5) As for the panel D, all the peripheral parts of both long sides of the panel main body are made into the connection edge part Y2 which can be piled up on the connection piece Y1 in panels AC.

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