JP6042215B2 - Anticorrosion structure and its construction method - Google Patents

Description

  The present invention relates to an anticorrosion structure to be constructed on the surface of a marine structure or the like and a construction method thereof.

  In order to improve the corrosion resistance of the surface of steel structures and concrete structures, a method of attaching a highly corrosion-resistant metal plate to the surface of the structure is generally carried out, and this is the case when constructing various marine structures in corrosive environments. Such surface protection measures are often taken.

  As an example of this surface anticorrosion measure, there is a method in which a stainless plate is applied to a highly corrosion-resistant metal plate and the stainless plate is directly welded to the surface of the steel structure. In addition, when a titanium plate is applied to a highly corrosion-resistant metal plate, the surface of the steel structure and the titanium plate cannot be directly welded. There is a titanium clad method of welding.

  In either method, the plate is welded to the surface of the steel structure. Therefore, there is a problem of fatigue of the steel structure during welding, and if a crack occurs during welding, the anticorrosion function is lowered. In addition, the titanium clad construction method increases the construction cost, and the problem of construction cost becomes more prominent as the scale of the structure to be protected against corrosion becomes larger, and it is generally adopted from the cost aspect for offshore structures where the scale of the structure to be protected against corrosion is generally large. difficult.

  Here, in Patent Document 1, a corrugated titanium plate is disposed on part or all of the surface of the steel structure, and the corrosion prevention of the steel structure in which a corrosion prevention layer is formed between the steel structure and the titanium plate. A structure and its construction method are disclosed. This structure uses a titanium plate whose surface shape is a part of the column surface and the corrugated crest portion faces the circumferential direction of the column surface, and the corrugated titanium plate was applied in this way Therefore, when the titanium thin plate is used as an outer wall for protecting the anticorrosion layer without removing the titanium thin plate as it is by filling the surface of the steel structure as a mold, it becomes possible to maintain the shape of the titanium thin plate when the titanium thin plate is installed. That's it.

  On the other hand, Patent Document 2 discloses a steel using a corrosion protection coating including at least a resin anticorrosion layer in contact with the surface of a steel sheet pile and a high corrosion resistance metal plate integrated with the resin anticorrosion layer via a buffer material. An anticorrosion structure for a sheet pile is disclosed. More specifically, the anticorrosion coatings are connected by welding the adjacent high corrosion-resistant metal plates to each other. With this configuration, even if the width dimension of the steel sheet pile is large or the coating length is long, A continuous anticorrosion protective layer can be constituted by the anticorrosion coatings connected to each other, and can be constructed at low cost using existing manufacturing equipment without increasing the size of the individual anticorrosion coatings.

  As described above, both of the techniques of Patent Documents 1 and 2 have their own effects, but both techniques use a bolt or the like to attach a highly corrosion-resistant metal plate made of a titanium plate or the like to a steel structure or the like. Since it is performed by connection, there is room for improvement in the mounting method to the structure, such as a decrease in workability associated with bolt connection and the need for measures for bolt connection to the highly corrosion-resistant metal plate.

  Moreover, in the technique of patent document 2, since it attaches a highly corrosion-resistant metal plate after attaching a resin anti-corrosion layer to the surface of a structure, it is necessary to implement attachment installation which differs substantially twice, and a viewpoint of workability | operativity There is room for improvement.

JP-A-2005-273242 JP 2010-255178 A

  This invention is made | formed in view of the problem mentioned above, and it aims at providing the anticorrosion structure which is excellent in workability | operativity, and has high anticorrosion performance, and its construction method.

  In order to achieve the above object, a method for constructing an anticorrosion structure according to the present invention includes a double-sided adhesive tape band bonded to a surface of a structure made of steel or concrete to form an adhesive frame, and an inner side of the adhesive frame. A block of two or more double-sided adhesive tapes is distributed and formed to form an adhesive block group, and a high corrosion resistant metal plate is bonded to the surface of the adhesive frame and the adhesive block group to temporarily fix the high corrosion resistant metal plate. The space formed by the thickness of the step, the adhesive frame and the adhesive block group and surrounded by the adhesive frame, the surface of the structure, and the high corrosion resistant metal plate communicates with the space provided in the high corrosion resistant metal plate or structure. An adhesive resin material is filled through a filling hole, and a highly corrosion-resistant metal plate is permanently fixed to the surface of the structure by a resin adhesive layer formed by curing the resin material, and consists of a resin adhesive layer and a highly corrosion-resistant metal plate. Anticorrosion structure It is made of a second step of forming on the surface of the structure.

  The construction method of the anticorrosion structure of the present invention is the construction of an anticorrosion structure formed from a resin adhesive layer and a highly corrosion-resistant metal plate on the surface of a steel structure or a concrete structure constituting an offshore structure or the like that requires surface corrosion prevention. In doing so, a high-corrosion-resistant metal plate is bonded to the surface of the structure with double-sided adhesive tape, and the sealing property when filling the resin material into the space between the structure surface and the high-corrosion-resistant metal plate due to the thickness of the double-sided adhesive tape and A double-sided adhesive tape is used to prevent the high corrosion-resistant metal plate from sticking due to the filling pressure.

  That is, when attaching a highly corrosion-resistant metal plate to the surface of the structure, no mechanical connection such as bolts is required, and the high-corrosion-resistant metal plate is bonded with a double-sided adhesive tape bonded to the surface of the structure, and resin is formed in the space defined by these Since the resin adhesive layer is formed by filling the material, the construction efficiency is dramatically improved as compared with the two-stage construction method in which the resin adhesive layer is first applied and then the highly corrosion-resistant metal plate is post-applied.

  Furthermore, the use of double-sided adhesive tape in place is not excluded, but the resin material is filled without disposing a stopper, a holding mold, etc. outside the highly corrosion-resistant metal plate. The protrusion of the highly corrosion-resistant metal plate can be suppressed.

  Concrete structures or steel structures that are subject to corrosion prevention include lower slabs and side wall slabs (both concrete and steel structures), such as marine structures. For example, steel pipe piles and steel sheet piles supporting steel, steel pipes constituting jacket structures, concrete breakwaters, and the like can be given as examples.

  In addition, examples of the highly corrosion-resistant metal plate include a stainless plate and a titanium plate. From the viewpoint of corrosion resistance, it is preferable to use a titanium plate.

  In addition, as the double-sided adhesive tape, it is preferable to apply a super strong double-sided adhesive tape of JIS Z-1541. As a form of the double-sided adhesive tape, in addition to the adhesive tape as a whole, a central plate-like support A laminated structure in which both sides are sandwiched by adhesive tapes may be used. Further, in the case where a space filled with the resin material is formed only by the thickness of the double-sided adhesive tape without using a spacer described later, the double-sided adhesive tape having the latter laminated structure is preferable in that the thickness can be secured.

  Examples of the corrosion-protected surfaces of these structures include flat surfaces such as slabs and curved surfaces such as steel pipes, and the construction method of the present invention can be applied to any surface form.

  In the first step, from the viewpoint of securing the sealing property of the resin material, the double-sided adhesive tape band is bonded in a frame shape within a predetermined range on the surface of the structure to form an adhesive frame. For example, when there is a 10m x 10m flat slab anticorrosion area, this 10m x 10m frame size adhesive frame is bonded to the slab surface and five 10m x 2m horizontal adhesive frames And the like.

  In this way, the high corrosion resistance metal plate is bonded to the surface of the adhesive frame, and the sealing property is ensured by filling the formed space with the resin material. In addition to this, the first step is as follows. Two or more double-sided adhesive tape blocks are distributed inside the adhesive frame to form an adhesive block group, and a high corrosion resistant metal plate is bonded to the surface of the adhesive frame and the adhesive block group to temporarily fix the high corrosion resistant metal plate. It is intended.

  Since the construction method of the present invention does not require holding the high corrosion-resistant metal plate from the outside with a mold or the like, the adhesive frame alone is used to hold the high-corrosion-resistant metal plate temporarily fixed when the resin material is filled. In some cases, the ejection cannot be sufficiently suppressed. Therefore, a double-sided adhesive tape block is distributed inside the adhesive frame, and in addition to the adhesive frame, the multiple corrosion-resistant metal plate is bonded to the multiple blocks, so that the high-corrosion-resistant metal plate can be protruded with only the double-sided adhesive tape. Can be suppressed.

  After the high corrosion-resistant metal plate is bonded to the surfaces of the bonding frame and the bonding block group in the first step and temporarily fixed, the second step is formed according to the thickness of the bonding frame and the bonding block group. The adhesive resin material is filled into the space surrounded by the adhesive frame, the surface of the structure and the high corrosion-resistant metal plate.

  Here, the adhesive resin material for forming the resin adhesive layer includes an organic resin such as epoxy resin, styrene resin, vinyl acetate, vinyl chloride, nitrile rubber, chloroprene rubber, styrene / butadiene rubber, silicone resin (modified silicone). Including).

  It is to be noted that the adhesive force required for the double-sided adhesive tape and the double-sided adhesive tape block disposed inside the adhesive frame are reduced by reducing the filling pressure to the highly corrosion-resistant metal plate as much as possible when filling the resin material. Can be reduced. Therefore, for example, it is desirable to select a low-viscosity resin material having fluidity that flows without resistance even in a space (gap) of several mm and having as low a viscosity as possible.

  The filling of the resin material is performed through a filling hole communicating with a space provided in the highly corrosion-resistant metal plate or structure.

  The resin material filled in the space is cured to form a resin adhesive layer, and the highly corrosion-resistant metal plate is permanently fixed to the surface of the structure with this resin adhesive layer. And in this fixed state, the anticorrosion structure which consists of a resin contact bonding layer and a highly corrosion-resistant metal plate will be formed in the surface of a structure.

  Thus, according to the construction method of the anticorrosion structure according to the present invention, the double-sided adhesive tape is bonded to the surface of the structure, and the high-corrosion resistant metal plate is temporarily fixed with the double-sided adhesive tape, and the adhesive frame made of the double-sided adhesive tape. A resin adhesive layer is formed by filling an adhesive resin material into a space surrounded by an adhesive frame, the surface of the structure, and a highly corrosion-resistant metal plate, which is formed by the thickness of the adhesive block group, and curing the resin material. By fixing the highly corrosion-resistant metal plate with the adhesive layer, it is not necessary to connect the machine with bolts, etc., and the control frame of the highly corrosion-resistant metal plate is unnecessary, and the resin adhesive layer and the highly corrosion-resistant metal plate can be efficiently used. The anticorrosion structure which consists of can be constructed.

  Further, in another embodiment of the construction method of the anticorrosion structure according to the present invention, in the first step, the double-sided adhesive tape is respectively provided on the front and back surfaces of the spacer frame in which the spacer band is formed in a frame shape. Adhering a band to form the adhesive frame, adhering a block of the double-sided adhesive tape to the front and back surfaces of two or more block-shaped spacers to form the adhesive block group, the thickness of the space, This is the sum of the thickness of the spacer and the thickness of the two double-sided adhesive tapes on the front and back surfaces.

  The construction method of the present embodiment uses an adhesive frame and an adhesive block group configured by adhering the double-sided adhesive tape to the front and back surfaces of the spacer instead of configuring the adhesive frame and the adhesive block group only from the double-sided adhesive tape. Then, it is a method of constructing the anticorrosion structure.

  Here, the spacer has various shapes such as a metal plate formed in a U-shaped cross section, a metal plate formed in a I-shaped cross section, a metal plate formed in a H-shaped cross section. Applicable. For example, in a U-shaped spacer having a U-shaped cross section, “front surface” means a U-shaped bottom surface, and “back surface” means two end surfaces of the U-shape. In addition, in the I-shaped cross-section and H-shaped cross-section spacers, “front surface” and “back surface” mean end surfaces of two flanges.

  By applying a spacer to form an adhesive frame or adhesive block group, the sum of the thickness of the spacer and the thickness of the two double-sided adhesive tapes on the front and back surfaces becomes the thickness of the space filled with the resin material. It is easier to ensure the thickness of the space than in the case of the above. However, since it is desirable from the viewpoint of material cost to suppress the filling amount of the resin material as much as possible, even when a spacer is applied, it is preferable that a thickness of about 10 to 20 mm is applied.

  In another embodiment of the construction method of the anticorrosion structure according to the present invention, in the first step, the band of the double-sided adhesive tape is bonded to the front and back surfaces of the spacer band, respectively. Further, an adhesive partition band is disposed inside the adhesive frame to divide the inner side of the adhesive frame into two or more sections, and the spacer band constituting the spacer frame has a groove, It has a communication hole that communicates with the space of each compartment at a position corresponding to the compartment, and the adhesive frame has the filling hole formed at one of its diagonal positions, and the air vent hole formed at the other, In the second step, the resin material filled from the filling hole passes through the groove of the spacer band constituting the adhesive frame, is sent to the space of each section through the communication hole, and passes through the separate communication hole, Separate spacer that composes the adhesive frame As the air pushed out of the groove of the band, and air is removed from the air vent hole, in which the filling of the resin material is carried out to the space of each compartment.

  When the inner dimension of the adhesive frame is relatively wide, the inner side is divided into two or more adhesive section bands formed by adhering a double-sided adhesive tape band, and each section is sequentially filled with a resin material, By sequentially extracting air from these sections, a resin adhesive layer free from air accumulation can be formed over the entire corrosion-protected range.

  More specifically, the spacer band constituting the spacer frame has a groove, and further has a communication hole communicating with the space of each section at a position corresponding to each section, and the adhesive frame has its diagonal position. The resin material filled from the filling hole has a communication hole in order from the section close to the filling hole by having a filling hole filled with the resin material on one side and an air vent hole on the other of the diagonal positions. The air in the space is pushed by the flow of the resin material, and the air is pushed out from the communicating hole of the spacer existing in the direction in which the air is pushed into the groove of the spacer and flows into the air vent hole. Air is vented here.

  In addition, the present invention extends to a corrosion prevention structure, and this corrosion prevention structure has an adhesive frame formed by adhering a double-sided adhesive tape strip to the surface of a structure made of steel or concrete. An adhesive block group in which blocks of two or more double-sided adhesive tapes are dispersedly arranged is adhered to the inside of the adhesive frame, and a highly corrosion-resistant metal plate is adhered to the surface of the adhesive frame and the adhesive block group. An adhesive resin adhesive layer is formed in the space surrounded by the adhesive frame, the surface of the structure, and the high corrosion-resistant metal plate, which is formed by the thickness of the group, and the adhesive frame, the adhesive block group, and the resin adhesive layer A corrosion-resistant metal plate is fixed to the surface of the structure, and is composed of a resin adhesive layer and a highly corrosion-resistant metal plate.

  The anticorrosion structure of the present invention is constructed by the construction method described above, and even if the highly corrosion-resistant metal plate is a thin film, no mechanical connection such as bolts is taken, so that the degradation point due to mechanical connection is Etc., and the anticorrosion structure is firmly connected to the surface of the structure through the resin adhesive layer.

  In this anticorrosion structure, the adhesive frame is formed by adhering the double-sided adhesive tape band to the front and back surfaces of the spacer frame in which the spacer band is formed in a frame shape. The block of the double-sided adhesive tape is bonded to the front and back surfaces of the spacer to form the adhesive block group, and the thickness of the space is the sum of the thickness of the spacer and the thickness of the two double-sided adhesive tapes on the front and back surfaces. There are some forms. Further, a band of the double-sided adhesive tape is bonded to each of the front and back surfaces of the spacer band to form an adhesive partition band, and the adhesive partition band is disposed inside the adhesive frame, so that the inner side of the adhesive frame is two or more. There is also a form in which a resin adhesive layer is formed in the space of each section.

  As can be understood from the above description, according to the anticorrosion structure of the present invention and the construction method thereof, when a resin material is filled by temporarily fixing a highly corrosion-resistant metal plate to the surface of the structure with a double-sided adhesive tape. The high corrosion resistance metal plate can be prevented from sticking with only the double-sided adhesive tape due to the sealing performance and filling pressure, and the resin material filled in the space between the surface of the structure and the high corrosion resistance metal plate is cured by the thickness of the double-sided adhesive tape. By securing the highly corrosion-resistant metal plate with the resin adhesive layer made in this way, it is possible to construct an anticorrosion structure having high anticorrosion performance under a construction method with excellent workability.

BRIEF DESCRIPTION OF THE DRAWINGS It is the flowchart explaining Embodiment 1 of the construction method of the anticorrosion structure of this invention, Comprising: (a) is the figure which showed a part of structure to be constructed, (b) is 1st It is a figure explaining the step. (A) is a figure explaining a 1st step and a 2nd step following Drawing 1b, and (b) is a figure explaining a 2nd step following Drawing 2a, and an anticorrosion structure constructed. 1 is a diagram showing a first embodiment. FIG. It is the schematic diagram explaining the inside of Embodiment 1 of an anticorrosion structure. It is the flowchart explaining Embodiment 2 of the construction method of the anticorrosion structure of this invention, Comprising: (a) is the figure which showed a part of structure to be constructed, (b) is 1st It is a figure explaining the step. (A) is the figure explaining the 1st step and further the 2nd step following Drawing 4b, and (b) is the figure of the anticorrosion structure constructed while explaining the 2nd step following Drawing 5a. FIG. 6 is a diagram showing a second embodiment. It is the flowchart explaining Embodiment 3 of the construction method of the anticorrosion structure of this invention, Comprising: It is the figure explaining the 1st step. It is a VII-VII arrow line view of FIG. FIG. 7 is a diagram illustrating a first step following FIG. 6. FIG. 9 is a diagram for explaining the second step following FIG. 8 and explaining the flow of the resin material into each compartment and the flow of air pushed out by the resin material at that time. It is the figure which showed Embodiment 3 of the constructed anti-corrosion structure.

  Embodiments 1, 2 and 3 of the anticorrosion structure of the present invention and its construction method will be described below with reference to the drawings. In addition, the structure used as construction object contains the structure of the various shape form which needs to form the anticorrosion structure in the surface in a corrosive environment. In addition, in the illustrated example, the construction target surface of the structure is set upright or facing upward for easy explanation, but the construction target surface is in any direction over the entire construction flow. You may face.

(Embodiment 1 of anticorrosion structure and its construction method)
FIG. 1 is a flow diagram for explaining a first embodiment of a method for constructing a corrosion-proof structure according to the present invention. FIG. 1a is a diagram showing a part of a structure to be constructed, and FIG. It is a figure explaining these steps. FIG. 2a is a diagram illustrating the first step and the second step following FIG. 1b. FIG. 2b is a diagram illustrating the second step following FIG. It is the figure which showed Embodiment 1, FIG. 3 is the schematic diagram explaining the inside of Embodiment 1 of an anticorrosion structure.

  The structure C shown in FIG. 1a is a steel structure or a concrete structure having a box shape among the marine structures in a corrosive environment, and the bottom plate of the structure C particularly required for corrosion resistance is flat. The surface S is a work target surface.

  As shown in FIG. 1a, an adhesive frame 1 formed by forming a band of a double-sided adhesive tape in a frame shape is bonded to a rectangular surface S of the structure C in a plan view. Further, two or more double-sided adhesive tape adhesive blocks 2 (four in the figure) are dispersed and adhered inside the adhesive frame 1 to form an adhesive block group 2 '.

  Here, both the adhesive frame 1 and the adhesive block 2 have a thickness t1, and a space G is formed in the adhesive frame 1 by the thickness t1.

  As the double-sided adhesive tape for forming the adhesive frame 1 and the adhesive block 2, it is preferable to apply a super strong double-sided adhesive tape of JIS Z-1541. Further, examples of commercially available products include Bond Tape WF721 manufactured by Konishi Bond Co., Ltd. (double-sided adhesive tape having an acrylic pressure-sensitive adhesive processed on both surfaces of a foamed polymer support).

  The planar size and radix of the adhesive block 2 constituting the adhesive block group 2 ′ are determined by bonding a highly corrosion-resistant metal plate to the adhesive frame 1 and the adhesive block group 2 ′, as will be described later. The size and the number of bases that can prevent the high corrosion-resistant metal plate from protruding by the filling pressure of the resin material are set in consideration of the adhesive force per unit area of the double-sided adhesive tape. That is, the illustrated construction method does not exclude the use of a restraining mold or the like that suppresses the protrusion of the highly corrosion-resistant metal plate other than the double-sided adhesive tape, but the adhesive frame 1 and the adhesive block group 2 made of the double-sided adhesive tape. This is a construction method that can temporarily fix a high corrosion-resistant metal plate and prevent the high corrosion-resistant metal plate from sticking out against the pressure of the resin material to be filled.

  When the bonding frame 1 and the bonding block group 2 ′ are bonded to the surface S of the structure C, a high corrosion resistance metal plate 3 is bonded to these end faces as shown in FIG. Temporary fixing is attempted (first step).

  As shown in the figure, the highly corrosion-resistant metal plate 3 has a filling hole 3a for filling the resin material (X1 direction) and an air vent hole 3b for drawing air when the resin material is filled in the space G (X2 direction). doing.

  Examples of the highly corrosion-resistant metal plate 3 include a stainless plate and a titanium plate. From the viewpoint of corrosion resistance, it is preferable to use a titanium plate. Moreover, the thickness t2 can be reduced as much as possible by applying the titanium plate, and the workability can be improved by reducing the weight.

  When a resin material is filled in the space G formed by the bonding frame 1 and the surface S of the structure C and the highly corrosion-resistant metal plate 3, the filled resin material is a space in which the sealing property is secured by the bonding frame 1. G is filled without any gaps. Then, as the resin material filled in the space G is cured, the resin adhesive layer 4 is formed in the space G as shown in FIG. 2B, and the height relative to the surface S of the structure C via the resin adhesive layer 4 is increased. The main fixing of the corrosion-resistant metal plate 3 is completed, and the anticorrosion structure 10 composed of the resin adhesive layer 4 and the high corrosion-resistant metal plate 3 is formed on the surface S of the structure C (second step).

  Here, the adhesive resin material for forming the resin adhesive layer 4 is an organic resin such as epoxy resin, styrene resin, vinyl acetate, vinyl chloride, nitrile rubber, chloroprene rubber, styrene / butadiene rubber, silicone resin (modified silicone). Can be included). In addition, the adhesive force requested | required of the adhesive frame 1 which consists of a double-sided adhesive tape, or adhesive block group 2 'is reduced by reducing the filling pressure with respect to the highly corrosion-resistant metal plate 3 as much as possible at the time of filling of a resin material. be able to. Therefore, for example, it is desirable to select a low-viscosity resin material having fluidity that flows without resistance even if the thickness t1 of the space G is about several millimeters and has a viscosity as low as possible.

  FIG. 3 shows a state where the highly corrosion-resistant metal plate 3 is removed from the resin adhesive layer 4 in order to confirm the inside of the applied anticorrosion structure 10.

  Each of the adhesive blocks 2 and the adhesive frame 1 constituting the adhesive block group 2 ′ has an adhesive surface, and is bonded to the high corrosion-resistant metal plate 3 on the entire surface together with the internal resin adhesive layer 4, and has high adhesive strength. Thus, the high corrosion resistant metal plate 3 is fixed to the surface S of the structure C.

  According to the construction method of the anticorrosion structure shown in the figure, the highly corrosion-resistant metal plate 3 can be temporarily fixed to the surface S of the structure C only by the adhesive frame 1 and the adhesive block group 2 ′ made of double-sided adhesive tape. It is possible to realize the prevention of sticking of the highly corrosion-resistant metal plate 3 due to the sealing property and the filling pressure when only the adhesive frame 1 and the adhesive block group 2 ′ are used. Further, the high corrosion-resistant metal plate 3 is formed by the resin adhesive layer 4 formed by curing the resin material filled in the space G between the surface S of the structure formed by the thickness t1 of the double-sided adhesive tape and the high corrosion-resistant metal plate 3. Thus, the anticorrosion structure 10 having high anticorrosion performance can be constructed under a construction method having excellent workability.

(Embodiment 2 of anticorrosion structure and its construction method)
FIG. 4 is a flowchart for explaining the second embodiment of the construction method of the anticorrosion structure according to the present invention. FIG. 4a is a view showing a part of the structure to be constructed, and FIG. It is a figure explaining these steps. FIG. 5a is a diagram explaining the first step and further the second step following FIG. 4b, and FIG. 5b is a diagram explaining the second step following FIG. FIG. 6 is a diagram showing a second embodiment.

  The structure P shown in FIG. 4a is a steel pipe, and is a steel pipe pile that supports the structure C shown in FIG. 1 and the like with a marine structure in a corrosive environment, and its work target surface is a curved surface.

  As shown in FIG. 4b, two adhesive frames 1A made of a double-sided adhesive tape band are bonded to the upper and lower ends of the curved surface S of the steel pipe P. Further, two or more double-sided adhesive tape adhesive blocks 2 are dispersed and adhered inside the two upper and lower adhesive frames 1A to form an adhesive block group 2 '. In addition, when bonding a high-corrosion-resistant metal plate having an annular cross section around a steel pipe as in the illustrated example, the protrusion of the high-corrosion-resistant metal plate should be suppressed even if the adhesive block group 2 'does not exist because the cross-section is circular. Therefore, it may be a construction method in which the adhesive block group 2 ′ is not applied as necessary.

  When the upper and lower two adhesive frames 1A and the adhesive block group 2 ′ are bonded to the surface S of the steel pipe P, a highly corrosion-resistant metal plate 3A provided with a filling hole 3Aa and an air vent hole 3Ab is wound around the steel pipe P, The connection end portions of the corrosion-resistant metal plate 3A are partially wrapped, and the band 1B of the double-sided adhesive tape is interposed at the lap location, whereby the high-corrosion-resistant metal plate 4A is temporarily fixed to the surface S of the steel pipe P. A space for filling the resin material is defined by the high corrosion-resistant metal plate 3A and the two adhesive frames 1A (first step).

  The resin material is filled into the space through the filling hole 3Aa, and air is extracted from the air vent hole 3Ab in the process of filling the space with the resin material, and the resin material is cured, thereby forming the resin adhesive layer 4A. Then, the resin adhesion layer 4A is used to fix the high corrosion resistance metal plate 3A to the surface S of the steel pipe P, thereby forming the anticorrosion structure 10A composed of the resin adhesion layer 4A and the high corrosion resistance metal plate 3A (second). Step).

  As described above, the construction method of the present invention can be applied even when the surface to be constructed is a curved surface, and for a structure that supports a box-like structure in the ocean with a steel pipe as in the illustrated example. As a result, all the corrosive surfaces of the box-like structure and the steel pipe pile can be covered with a highly corrosion-resistant metal plate.

(Embodiment 3 of the anticorrosion structure and its construction method)
FIG. 6 is a flowchart for explaining the third embodiment of the construction method of the anticorrosion structure of the present invention, and is a diagram for explaining the first step. FIG. 7 is a view taken along arrows VII-VII in FIG. FIG. 8 is a diagram for explaining the first step following FIG. FIG. 9 is a diagram for explaining the second step following FIG. 8 and explaining the flow of the resin material into each compartment and the flow of air pushed out by the resin material at that time. FIG. 10 is a diagram showing a third embodiment of the constructed anticorrosion structure.

  The construction method of the present embodiment is an effective method when the plane area of the surface S to be constructed of the structure C is flat and relatively large. In order to eliminate the concern that smooth and sufficient filling of the resin material in the space cannot be performed when the construction method shown in FIG. This is a method that can effectively extract air from the space. Moreover, in the construction method of this Embodiment, it is supposed that the thickness of space is ensured using not only a double-sided adhesive tape but the spacer which has desired cross-sectional shape.

  As shown in FIG. 6, the adhesive frame 1C is formed by bonding the double-sided adhesive tape band 1B to the front and back surfaces of the spacer frame 5 in which the steel spacer bands are formed in a frame shape. In order to divide 1C into three sections Z1, Z2, and Z3, two adhesive section bands 2D each having a double-sided adhesive tape band 2C bonded to the front and back surfaces of the spacer band 7 are provided inside the adhesive frame 1C. . Then, an adhesive block group 2B ′ composed of an adhesive block 2B formed by adhering a block 2A of double-sided adhesive tape to the front and back surfaces of two or more block-like spacers 6 is formed in each of the sections Z1, Z2 and Z3. To do.

  The thickness of the space of each section Z1, Z2, Z3 is the sum t5 of the thickness t3 of the spacers 5, 6, 7 and the thicknesses t4, t4 of the double-sided adhesive tapes 1B, 2A, 2C on the front and back surfaces.

  As shown in FIG. 7, the cross-sectional shape of the spacer 5 constituting the adhesive frame 1 </ b> C has a U-shaped cross-section with an opening upward and has a groove 5 a, and the resin material filled from the filling hole 1 </ b> Ca is It flows through the groove 5a and is sent to the position corresponding to each of the sections Z1, Z2, and Z3. That is, one side where the filling hole 1Ca is formed in the adhesive frame 1C plays the role of a feed rail that feeds the resin material.

  On one side of the adhesive frame 1C constituting the feed rail, a communication hole 5b is formed on the side surface of the spacer 5 so that the resin material that has flowed to the positions corresponding to the sections Z1, Z2, and Z3 flows into the sections.

  On the other hand, as shown in FIG. 6, when the resin material flows into each of the compartments Z1, Z2, and Z3 on the side surface of the spacer 5 constituting the other side facing the one side of the adhesive frame 1C having the communication hole 5b. A communication hole 5c through which the air pushed out flows is opened, and the air that has flowed through the groove of the spacer 5 through the communication hole 5c is extracted from the air vent hole 1Cb that is diagonal to the filling hole 1Ca.

  After adhering the adhesive frame 1C, the adhesive zone 2D, and the adhesive block group 2B ′ to the surface S of the structure C, the high corrosion resistant metal plate 3B is adhered to the end faces of these double-sided adhesive tapes as shown in FIG. The plate 3B is temporarily fixed (first step).

  Here, the high corrosion-resistant metal plate 3B is provided with a filling hole 3Ba for filling the resin material and an air vent hole 3Bb. In the temporarily fixed posture shown in FIG. 8, the filling hole 3Ba and the filling hole 1Ca of the bonding frame 1C are fluid. Similarly, the air vent hole 3Bb and the air vent hole 1Cb of the adhesive frame 1C are in fluid communication.

  Next, as shown in FIG. 9 (FIG. 9 is a view in which the highly corrosion-resistant metal plate 3B is omitted in order to explain the flow of the fluid in the interior), it is filled through the filling holes 3Ba and 1Ca ( (X5 direction) The resin material flows through the groove of the spacer constituting one side of the adhesive frame 1C to the positions of the sections Z1, Z2, and Z3 (X6 direction), and flows into the sections through the communication holes 5b of the sections. (X7 direction).

  The air present in the compartment is pushed out by the flow of the resin material, is sent to the air vent hole 1Cb through the groove of the spacer constituting the other piece of the adhesive frame 1C, and is vented through the air vent holes 1Cb and 3Bb. The

  In this way, when the construction target area is large, it can be divided into areas of a certain area, and the resin material can flow in a certain direction to some extent, so that the air can be effectively removed from the compartment, and the air pool The resin material can be filled in a wide space in the absence of the above.

  As the resin material in each of the compartments Z1, Z2, and Z3 is cured, the highly corrosion-resistant metal plate 3B is permanently fixed via the resin adhesive layer 4B formed in the space of each compartment as shown in FIG. The anticorrosion structure 10B which consists of the contact bonding layer 4B and the highly corrosion-resistant metal plate 3B is formed.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

  DESCRIPTION OF SYMBOLS 1,1A ... Adhesive frame, 1B ... Band of double-sided adhesive tape, 1C ... Adhesive frame, 1Ca ... Filling hole, 1Cb ... Air vent hole, 2 ... Adhesive block, 2 '... Adhesive block group, 2A ... Block of double-sided adhesive tape, 2B ... Adhesive block, 2B '... Adhesive block group, 2C ... Double-sided adhesive tape band, 2D ... Adhesive partition band, 3, 3A ... High corrosion resistant metal plate, 3a, 3Aa, 3Ba ... Filling hole, 3b, 3Ab, 3Bb ... Air vent hole 4, 4A ... Resin adhesive layer, 5 ... Spacer frame (spacer), 5a ... Groove, 5b, 5c ... Communication hole, 6 ... Block spacer (spacer), 7 ... Spacer band (spacer), 10 , 10A, 10B ... Corrosion-proof structure, C ... Structure (box-shaped structure), P ... Structure (steel pipe), S ... Surface, G ... Space, Z1, Z2, Z3 ... Section

Claims (6)

A double-sided adhesive tape strip is bonded to the surface of a structure made of steel or concrete in a frame shape to form an adhesive frame, and two or more double-sided adhesive tape blocks are distributed inside the adhesive frame to form an adhesive block group. A first step of forming and temporarily fixing the high corrosion-resistant metal plate by bonding a high corrosion-resistant metal plate to the surface of the adhesive frame and the adhesive block group;
A space formed by the thickness of the adhesive frame and the adhesive block group and surrounded by the adhesive frame, the surface of the structure, and the high corrosion-resistant metal plate is connected to the space provided in the high corrosion-resistant metal plate or structure. An anti-corrosion structure consisting of a resin adhesive layer and a highly corrosion-resistant metal plate, which is filled with an adhesive resin material through holes and fixed to the surface of the structure by a resin adhesive layer formed by curing the resin material. Ri Do from the second step of forming a body surface of the structure,
In the first step, the adhesive frame is formed by adhering the double-sided adhesive tape band to the front and back surfaces of the spacer frame formed by forming the spacer band into a frame shape, and the front and back surfaces of the spacer band are formed. The adhesive double-sided adhesive tape is bonded to each other to further form an adhesive zone, and the adhesive zone is disposed inside the adhesive frame to divide the inner side of the adhesive frame into two or more zones. Adhering the double-sided adhesive tape blocks to the front and back surfaces of the block spacers to form the adhesive block group,
The thickness of the space is the sum of the thickness of the spacer and the thickness of the two double-sided adhesive tapes on the front and back surfaces thereof,
The spacer band constituting the spacer frame has a groove, and has a communication hole communicating with the space of each partition at a position corresponding to each partition,
The adhesive frame has the filling hole formed in one of its diagonal positions, and the air vent hole formed in the other,
In the second step, the resin material filled from the filling hole passes through the groove of the spacer band constituting the adhesive frame, is sent to the space of each section through the communication hole, and passes through the separate communication hole. The construction method of the anticorrosion structure in which the air pushed out through the groove of the separate spacer band constituting the adhesive frame passes through the air vent hole and the resin material is filled into the space of each section. The construction method of the anticorrosion structure according to claim 1, wherein the structure has a box shape and the surface is a flat surface. The construction method of the anticorrosion structure according to claim 1, wherein the structure is a hollow or solid cylindrical body, and the surface thereof is a curved surface. An adhesive frame formed by adhering a double-sided adhesive tape strip in a frame shape to the surface of a structure made of steel or concrete, and an adhesive block group in which two or more double-sided adhesive tape blocks are dispersedly arranged Adhered to the inside, a highly corrosion-resistant metal plate is adhered to the surface of the adhesive frame and adhesive block group,
An adhesive resin adhesive layer is formed in the space surrounded by the adhesive frame and the surface of the structure and the highly corrosion-resistant metal plate, which is formed by the thickness of the adhesive frame and the adhesive block group.
A highly corrosion-resistant metal plate is fixed to the surface of the structure by an adhesive frame, an adhesive block group, and a resin adhesive layer, and is composed of a resin adhesive layer and a high corrosion-resistant metal plate.
The adhesive frame is formed by bonding the double-sided adhesive tape band to the front and back surfaces of the spacer frame formed by forming the spacer band into a frame shape, and the double-sided adhesive tape is formed on the front and back surfaces of the spacer band, respectively. A band is bonded to form an adhesive section band, the adhesive section band is disposed inside the adhesive frame, and the inner side of the adhesive frame is divided into two or more sections, and the surface of the two or more block-shaped spacers The adhesive block group is formed by adhering a block of the double-sided adhesive tape to the back surface,
The thickness, total der two double-sided adhesive tape of the thickness of the thickness and its front and back surfaces of the spacer is, the resin adhesive layer in the space of each compartment is formed, anticorrosion structure of the space. The anticorrosion structure according to claim 4, wherein the structure has a box shape, and the surface thereof is a flat surface. The anticorrosion structure according to claim 4, wherein the structure is a hollow or solid cylindrical body, and the surface thereof is a curved surface.

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