JP6726332B1 - Steel member having anticorrosion coating, wall structure, method for manufacturing steel member having anticorrosion coating, and method for constructing wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steel member having a good fixing force of an anticorrosion coating. SOLUTION: A steel member (14) provided at a boundary between a front side and a back side of a water structure or a land structure is an anticorrosion coating provided on a front surface and/or a rear surface of the steel member in a predetermined range. (16) and an edge fixing material (18) for fixing the anticorrosion coating to the steel member. Preferably, the edge fixing material is fixed to the steel member so as to extend continuously or discontinuously in the vertical direction at portions spaced inward from the left and right end surfaces (16a) of the anticorrosion coating by a predetermined distance. [Selection diagram]

Description

INDUSTRIAL APPLICABILITY The present invention mainly relates to civil engineering/building steel structures installed outdoors and steel members and water area structures having anticorrosion coatings in steel plant facilities such as pipes and tanks (seawalls, quays, breakwaters, diversion walls, etc.) A steel member having an anticorrosion coating, a wall structure, and a method for manufacturing a steel member having an anticorrosion coating, which are provided on the boundary between the front side and the back side in a land structure (retaining wall, retaining wall, etc.), A method for constructing a wall structure.

Conventionally, when steel members such as steel sheet piles are to be used in severely deteriorated environments (corrosion, sand wear, ice attack, etc.) such as in sea areas, oceans using heavy corrosion resistant steel sheet piles with a protective layer on the outer surface are used. Structures and the like have been proposed (for example, see Patent Document 1). The heavy-duty anticorrosion steel sheet pile of Patent Document 1 has a certain effectiveness, but since it is necessary to fix the protective cover to the joint portion, the number of steps increases at the time of construction, and as a result, the construction period and construction cost increase. There is a problem called.

In order to solve such a problem, the present inventor has proposed a steel member having a protective layer, which has features such as eliminating the need for fixing work on site (Patent Document 2).

JP, 2004-137801, A JP, 2008-084059, A

It was found that the steel member having the protective layer described in Patent Document 2 has a certain room for improvement in fixing the protective layer.

The present invention has been developed in view of such a situation, and is a steel member having an anticorrosion coating, a wall structure, and an anticorrosion coating which have been improved by overcoming the problems in the above-mentioned conventional techniques. An object of the present invention is to provide a method for manufacturing a steel member having the above and a method for constructing a wall structure.

The steel member having the anticorrosion coating described in claim 1 of the present application is an anticorrosion coating having a predetermined planar shape in a predetermined range of the steel member, and a predetermined inward direction from an end face of a predetermined edge portion of the anticorrosion coating. Fixed to the steel member so as to be continuously or discontinuously installed at places spaced apart from each other, and an edge fixing material for fixing the anticorrosive coating to the steel member, and the discontinuous The length of the continuous portion is longer than the length of the non-continuous portion in the edge fixing material installed in 1., and the portion is located outside the planned designed anticorrosion coating .

A steel member having an anticorrosion coating according to claim 2 of the present application is the steel member according to claim 1 , wherein the steel member includes a front surface side and a back surface side of a waterproof area structure or a land area structure. An anticorrosion coating provided at a boundary and provided in a predetermined range on the front surface and/or the back surface of the steel member; and an edge fixing material for fixing the anticorrosion coating to the steel member. It is a feature.

A steel member having an anticorrosion coating according to claim 3 of the present application is the steel member according to claim 1 or 2 , wherein the edge fixing material is spaced inward from the left and right end surfaces of the anticorrosion coating by a predetermined distance. It is characterized in that it is fixed to the steel member so as to respectively extend in the vertical direction at the points.

A steel member having an anticorrosion coating according to claim 4 of the present application is the steel member according to any one of claims 1 to 3 , wherein the edge fixing material is from a lower end surface of the anticorrosion coating. It is characterized in that it is fixed to the steel member so as to extend in a horizontal direction at a position separated by a predetermined distance upward.

A steel member having an anticorrosion coating according to claim 5 of the present application is the steel member according to any one of claims 1 to 4 , wherein the edge fixing material is from an upper end surface of the anticorrosion coating. It is characterized in that it is fixed to the steel member so as to extend in a horizontal direction at a position separated by a predetermined distance downward.

A steel member having an anticorrosion coating according to claim 6 of the present application is the steel member according to any one of claims 1 to 5 , wherein the edge fixing material is continuous with the steel member. It is characterized in that it is indirectly fixed to the steel member by being fixed to a convex member fixed to the steel member or discontinuously.

A steel member having an anticorrosion coating according to claim 7 of the present application is the steel member according to any one of claims 1 to 6 , wherein the edge fixing material is fixed to the steel material. , Welding or mechanical fastening.

A steel member having an anticorrosive coating described in claim 8 of the present application is the steel member of any one of claims 1 to 7 , wherein at least one of the steel member and the edge fixing material is The present invention is characterized in that at least one of a roughened surface and a concavo-convex surface is provided in all or a part of the area in contact with the anticorrosion coating.

A steel member having an anticorrosion coating according to claim 9 of the present application is the steel member according to any one of claims 1 to 8 , wherein the edge fixing material is substantially circular, substantially rectangular, or substantially circular. The steel rod is characterized by being a steel rod having a cross section of any of a triangle, a trapezoid, and an ellipse.

A steel member having an anticorrosion coating according to claim 10 of the present application is the steel member according to any one of claims 1 to 8 , wherein the edge fixing material is continuous with the steel member. It is characterized in that it is a weld bead that is provided on or in a discontinuous manner.

A steel member having an anticorrosion coating according to claim 11 of the present application is the steel member according to any one of claims 1 to 10 , wherein the left and right end surfaces, the lower end surface, or the upper end surface of the anticorrosion coating is It further comprises a curing material installed in contact with at least one of them.

A steel member having an anticorrosion coating according to claim 12 of the present application is the steel member according to any one of claims 3 to 11 , wherein the edge fixing material is discontinuously provided. It is characterized in that unevenness is provided on the front surface and/or the back surface of the steel member in the continuous portion or the discontinuous portion and in the vicinity thereof.

A steel member having an anticorrosive coating according to claim 13 of the present application is the steel member according to any one of claims 3 to 11 , wherein the edge fixing material is non-continuously provided. It is characterized in that the continuous portion or the discontinuous portion and the surface and/or back surface of the steel member in the vicinity thereof are provided with irregularities by continuous or discontinuous weld beads.

A steel member having an anticorrosion coating according to claim 14 of the present application is the steel member according to any one of claims 3 to 13 , wherein the anticorrosion coating is also applied to a discontinuous portion of the edge fixing material. Is provided.

A steel member having an anticorrosive coating according to claim 15 of the present application is the steel member according to any one of claims 2 to 14 , wherein the steel member is a steel sheet pile, a steel pipe pile, or a steel pipe. It is characterized by being one of sheet piles.

A steel member having an anticorrosion coating according to claim 16 of the present application is the steel member according to any one of claims 2 to 15 , wherein the anticorrosion coating is formed of an organic age hardening material. It is characterized by that.

The wall structure described in claim 17 of the present application is characterized in that it is constituted by a steel member having the anticorrosion coating described in any one of claims 2 to 16. is there.

The wall structure according to claim 18 of the present application is the wall structure according to claim 17 , wherein the position of the lower end surface of the anticorrosion coating is either below 1 m below the low tide surface or below the average low tide surface. It is characterized by that.

A method for manufacturing a steel member having an anticorrosion coating according to any one of claims 2 to 16 described in claim 19 of the present application, wherein the edge fixing material is provided on the steel member. A fixing step of fixing, a base material adjusting step of forming at least one of a roughened surface and an uneven surface on at least a part of at least one of the steel member and the edge fixing material, and the roughened surface and the uneven surface The method is characterized by including a primer coating step of forming a primer layer in a region including at least one of them and an application step of applying a material to be the anticorrosion coating on the primer layer.

According to claim 20 of the present application, the method for constructing a wall structure constituted by the steel member having the anticorrosive coating according to any one of claims 2 to 16 is the anticorrosive coating. The step of burying the position of the lower end surface of the above in the lower support so as to be either below 1 m below the low tide surface or below the average low tide surface.

The construction method of a wall structure according to claim 21 of the present application is the construction method of claim 20 , wherein the lower support is a foundation ground or concrete footing.

According to the present invention, the anticorrosion coating can be satisfactorily fixed by fixing the edge fixing material to the steel member. Further, by installing a curing material on the end surface of the anticorrosion coating, it is possible to prevent the anticorrosion coating from deviating from the planned design range when the anticorrosion coating is formed by spraying or the like. Further, by fixing the edge fixing material to the steel member using the convex member, the material of the anticorrosion coating can be made to enter the gap between the edge fixing material and the steel member. It is possible to further improve the fixing force at the end portion of.

It is a schematic perspective view showing a state in which a wall structure using a steel member having an anticorrosive coating according to a preferred embodiment of the present invention is installed at a boundary of a water area structure. FIG. 2 is an enlarged perspective view showing a part of the wall structure shown in FIG. 1. FIG. 3A is a plan view showing a hat-shaped steel sheet pile used as a steel member, and FIG. 3B is a view showing a fitting portion of the hat-shaped steel sheet pile. FIG. 4A is a front view of a steel member showing a form in which the edge fixing material is fixed to the inside of the left and right end surfaces of the anticorrosion coating, and FIG. 4B shows the edge fixing material being the anticorrosion coating. 4C is a front view of the steel member that is fixed to the inside of the left and right end faces and the lower end face of FIG. 4C. FIG. 4C shows that the edge fixing material is inside the left and right end faces, the lower end face and the upper end face of the anticorrosion coating. It is a front view of the steel member which showed the form fixed to one side. It is the schematic diagram which showed the installation location of the anticorrosion coating as an example. It is an expanded sectional view showing the steel member which has the anticorrosion coat concerning the 1st embodiment of the present invention. It is an expanded sectional view showing various modifications of a steel member which has an anticorrosion coating concerning a 1st embodiment of the present invention. FIG. 7 is an enlarged cross-sectional view showing a form in which a curing material is provided in the steel member having the anticorrosion coating of FIG. 6. FIG. 9A is an enlarged cross-sectional view showing a steel member having an anticorrosive coating according to the second embodiment of the present invention, and FIG. 9B is taken along line 9b-9b in FIG. 9A. 9C is a sectional view taken along line 9c-9c in FIG. 9B. It is an expanded sectional view showing a modification of a steel member which has a corrosion protection coat concerning a 2nd embodiment of the present invention. FIG. 11( a) is a plan view showing a state in which an anticorrosive coating is installed in a predetermined range on the surface of the steel pipe sheet pile with joint, and FIG. 11( b) is taken along line 11 b-11 b in FIG. 11( a ). 11C is an enlarged view of the portion 11c of FIG. 11A.

(overall structure)
Next, with reference to the drawings, a steel member having an anticorrosion coating according to a preferred embodiment of the present invention will be described. FIG. 1 is a schematic perspective view showing a state in which a wall structure using a steel member having an anticorrosive coating according to a preferred embodiment of the present invention is installed at a boundary of a water body structure, and FIG. FIG. 2 is an enlarged perspective view showing a part of the wall structure shown in FIG. 1.

The wall body structure, generally designated by the reference numeral 10 in FIG. 1, comprises a wall body 12. In FIG. 1, the extension direction of the wall structure 10 is the x direction, and the vertical direction is the y direction.

The wall body 12 is formed by fitting or disposing a large number of steel members 14 in the x direction, and embedding the lower portion in the lower support body. The lower support is foundation ground or concrete footing. The foundation ground also includes the ground formed by the improved soil. The wall 12 is embedded in the foundation ground by vibrating by a vibro hammer, impact by a hydraulic hammer, press-fitting by a hydraulic press-fitting device, or the like.

In the example shown in FIGS. 1 and 2, a hat-shaped steel sheet pile is used as the steel member 14.

As shown in FIG. 3( a ), the hat-shaped steel sheet pile 14 has a flange 14 a, an arm portion 14 b, and a joint portion 14 c that mainly resist a bending moment when a load such as earth pressure is applied, and a shear force. A resisting web 14d. More specifically, in the hat-shaped steel sheet pile 14, a pair of webs 14d are continuously arranged so as to spread outward from both edges of the flange 14a, and each web 14d is arranged substantially parallel to the flange 14a. The arm portions 14b are continuously arranged so that the joint portions 14c are continuously provided to the respective arm portions 14b.

An upper opening claw 14c1 is formed on one of the joints 14c of the hat-shaped steel sheet pile 14, and a lower opening claw 14c2 is formed on the other of the joints 14c. The upper opening claw 14c1 and the lower opening claw 14c2 are formed in complementary shapes to each other, and the upper opening claw 14c1 of the joint portion 14c of one hat-shaped steel sheet pile 14 is joined to the other hat-shaped steel sheet pile 14 adjacent thereto. By fitting the lower opening claw 14c2 of the portion 14c, or by connecting the lower opening claw 14c2 of the joint portion 14c of one hat-shaped steel sheet pile 14 to the upper opening claw of the joint portion 14c of the other hat-shaped steel sheet pile 14 adjacent thereto. By fitting 14c1, it is possible to fit a desired number of hat-shaped steel sheet piles 14. FIG. 3B is an enlarged view showing a fitting portion of the joint portion of the hat-shaped steel sheet pile 14.

(First embodiment)
As shown in FIG. 2 and FIG. 4A, the steel member 14 is provided with an anticorrosion coating 16 installed in a predetermined range on the surface thereof, and a portion that is spaced inward from the left and right end surfaces 16a of the anticorrosion coating 16 by a predetermined distance. And a pair of edge fixing members 18 fixed to the steel member 14 so as to extend in the vertical direction (y direction). Here, “inward” means the direction in which the anticorrosion coating 16 exists, and therefore the edge fixing material 18 is located inside the anticorrosion coating 16 (in other words, inside the anticorrosion coating 16). Included).

The anticorrosion coating 16 and the edge fixing material 18 may be provided on the surface of the steel member 14 opposite to the surface shown in FIG. 2 (hereinafter referred to as “front surface”) (hereinafter referred to as “rear surface”). However, it may be provided on both the front surface and the back surface.

The edge fixing material 18 is provided at a position that is spaced inward from the left and right end surfaces 16a of the anticorrosion coating 16 by a predetermined distance, and also at a location that is spaced inward (upward) from the lower end surface 16b of the anticorrosion coating 16 ( 4(b)), or in addition, in addition to the upper end surface 16c of the anticorrosion coating 16 at a predetermined distance inward (downward) (see FIG. 4(c)). ..

The anticorrosion coating 16 is mainly provided to resist corrosion and abrasion, and secondarily to resist external attack (collision action or sliding action of drifting objects or ice sheets). As a material of the anticorrosion coating 16, an organic time-curable material (urethane resin, epoxy resin, etc.) is used.

The anticorrosion coating 16 is basically formed by means such as spraying with a coating machine. Further, auxiliary means for spraying by a coating machine, or roller coating or brush coating when the anticorrosion coating area is small is also adopted.

The predetermined range L of the surface of the steel member 14 coated with the anticorrosion coating 16 is determined by the structural design and the installation environment (deterioration environment, corrosion environment, drift sand/sand transport environment, drift object environment, etc.), For example, the predetermined range L may be set to a range that covers the vicinity of the tidal zone or ice attack where concentrated corrosion may occur in a standard marine environment (see FIG. 5A). Further, the predetermined range L may be set to a range that covers the vicinity of the foundation ground, for example, when considering scouring or quicksand/sand transport due to the influence of waves or river flow (see FIG. 5(b)). Further, it may be set to a range that covers a portion where a large bending moment acts or a range that is effective in suppressing the displacement of the steel member 14. The predetermined range L may be set at a plurality of vertical portions of the steel member 14 (see FIG. 5(c)) or both surfaces of the steel member 14 (see FIG. 5(d)). ).

The steel member 14 may have a roughened surface in all or part of the area in contact with the anticorrosion coating 16. In addition, the edge fixing material 18 may have a roughened surface in all or part of the area in contact with the anticorrosion coating 16. By providing the roughened surface, fixing of the anticorrosion coating 16 is further improved. The roughened surface can be formed by, for example, sand blasting or shot blasting.

The steel member 14 may have a concavo-convex surface in all or a part of the area in contact with the anticorrosion coating 16. Further, the edge fixing material 18 may have an uneven surface in all or a part of the area in contact with the anticorrosion coating 16. By providing the uneven surface, the anticorrosion coating 16 can be more firmly fixed. The uneven surface can be formed by, for example, knurling.

The edge fixing material 18 is installed to surely fix the anticorrosion coating 16 to the steel member 14. As the edge fixing material 18, for example, round steel is used as shown in FIG. The fixing of the edge fixing material 18 to the steel member 16 is performed by welding 20 (continuous welding or discontinuous welding) or mechanical fastening (bolting or the like).

The edge fixing material 18 may be provided continuously as shown in FIGS. 2 and 4, or may be provided discontinuously (that is, intermittently). When the edge fixing material 18 is provided discontinuously, it is preferable to make the length of the continuous portion longer than the length of the discontinuous portion in order to maintain good fixability.

Concavities and convexities may be provided on the discontinuous portion of the edge fixing material 18 provided discontinuously, or on the surface and/or the back surface of the steel member 14 in the discontinuous portion and the vicinity thereof. Such irregularities may be formed by continuous or discontinuous weld beads. By providing such unevenness, fixing of the anticorrosion coating 16 can be further improved. When the discontinuous edge fixing material 18 is used, it is preferable to dispose the anticorrosion coating 16 also on the discontinuous portion.

As the edge fixing material 18, instead of round steel, a steel rod having another cross-sectional shape as illustrated in FIG. 7 may be used. That is, in FIG. 7A, a steel rod having a rectangular cross section is fixed to the surface of the steel member 14 by welding 20 so that one side is in contact, and in FIG. 7B, a steel rod having a rectangular cross section is fixed. The steel member 14 is fixed by welding 20 so that one corner is in contact with the surface. In Fig. 7(c), a steel rod having a triangular cross section is fixed to the surface of the steel member 14 by welding 20 so that one side is in contact, and in Fig. 7(d), a steel rod having a triangular cross section is made of steel. The surface of the member 14 is fixed by welding 20 so that one corner is in contact. In Fig. 7(e), a steel rod having a trapezoidal cross section is fixed by welding 20 so that the long side is in contact with the surface of the steel member 14, and in Fig. 7(f), a steel rod having a trapezoidal cross section is made of steel. It is fixed by welding 20 so that the short side is in contact with the surface of the manufacturing member 14. A steel rod having another cross-sectional shape (for example, an elliptical cross-sectional shape) may be used as the edge fixing material 18. It should be noted that the welding 20 is installed not on the inner corner of the edge fixing material 18 but on the outer corner of the edge fixing material 18 (the corner on the side of the end surface 16a in the figure) as shown in the drawing. Good to do. This is because when the weld 20 cools, it contracts, the edge fixing material 18 deforms as shown in FIG. 7G, and a gap into which the material of the anticorrosion coating 16 enters is formed.

The edge fixing material 18 is preferably installed outside the planned design anticorrosion coating (shown by the line AA in FIGS. 6 and 7).

The curing material 22 is installed so as to contact the left and right end surfaces 16a of the anticorrosion coating 16 so that the anticorrosion coating 16 does not deviate from the planned design range (see FIG. 8). Similarly, the curing material 22 is installed on the lower end surface 16b and the upper end surface 16c of the anticorrosion coating 16. The height of the curing material 22 is preferably selected so as to be slightly higher than that of the anticorrosion coating 16, as shown in FIG. FIG.8(b) is the figure which showed another form in which the curing material 22 is installed. Usually, the curing material 22 is often removed at a timely timing after disposing an organic aging material (urethane resin, epoxy resin, etc.) by means such as spraying with a coating machine, but there is no particular obstacle to this. You can leave it alone.

There are various curing materials 22. When the anticorrosion coating 16 is thin, it may be as thin as a gum tape, but when the anticorrosion coating 16 having a thickness of 2 to 3 mm is formed by spraying once or twice, the flow of the organic time-curable material A thicker curing material 22 is used to prevent sagging. In the example shown in FIG. 8, an elastic foam (sponge or the like) with an adhesive 22a is used as the curing material 22.

(Second embodiment)
In the first embodiment, the edge fixing material 18 is directly fixed to the steel member 14, but in the second embodiment, the edge fixing material 18 is indirectly fixed to the steel member 14. There is. That is, in the second embodiment shown in FIG. 9A, the edge fixing material 18 is fixed to the steel member 14 by being fixed to the convex member 23 fixed to the steel member 14. There is.

When the edge fixing material 18 is fixed to the steel member 14 using the convex member 23, the edge fixing material 18 is separated from the steel member 14 without coming into contact with the steel member 14, so that the edge fixing material 18 and the steel member 14 are separated from each other. The material of the anticorrosion coating 16 also enters the gaps between them, and the fixing force at the end of the anticorrosion coating 16 is further improved.

The convex member 23 is provided discontinuously in order to provide a gap between the edge fixing material 18 and the steel member 14. The convex member 23 may be replaced by a weld bead, or a newly prepared member may be fixed to the steel member 14 by welding or the like to form the convex member. FIG. 9B shows an example in which a welding bead provided discontinuously is used as the convex member 23. In FIG. 9C, in a portion where the convex member 23 does not exist, a gap is created between the surface of the steel member 14 and the lower surface of the edge fixing material 18, and the material of the anticorrosion coating 16 enters between the gaps. The state is shown.

Further, as shown in FIG. 10, a weld bead continuously or discontinuously provided on the surface of the steel member 14 may be used as the edge fixing material 18.

Although the example in which the hat-shaped steel sheet pile is used as the steel member 14 has been described, the case of using another steel sheet pile (for example, U-shaped steel sheet pile) is similar to the above-described embodiment.

Further, as the steel member, a steel pipe pile or a steel pipe sheet pile may be used instead of the steel sheet pile. FIG. 11A shows a state in which the anticorrosive coating 26 is installed so as to substantially match the shape of the surface of the steel member 24 within a predetermined range of the surface of the steel member (steel pipe sheet pile with joint) 24. It is a top view. That is, the steel member 24 is fixed to the anticorrosion coating 26 provided in a predetermined range on the surface thereof and a pair of vertically extending portions at a predetermined distance inward from the left and right end surfaces 26a of the anticorrosion coating 26. Edge fixing material 28.

Even when a steel pipe pile or a steel pipe sheet pile is used as the steel member, a curing material may be installed as in the above-described embodiment using the steel sheet pile. In FIG. 11(b), the edge fixing material 28 is Although it is fixed only to the portions adjacent to the left and right end surfaces 26a of the anticorrosion coating 26, the edge fixing material 28 may be fixed to the portions adjacent to the lower end surface 26b and the upper end surface 26c of the anticorrosion coating 26. The fixing of the edge fixing material 28 to the steel member 24 is performed by welding (continuous welding or discontinuous welding) or mechanical fastening (bolting or the like). Further, the edge fixing material 28 may be provided continuously or discontinuously (that is, intermittently) like the edge fixing material 18. Further, similarly to the steel member 14, the steel member 24 may be provided with a roughened surface or a concavo-convex surface, or with the discontinuous portion or the discontinuous portion of the edge fixing material 28 provided discontinuously. Concavities and convexities may be provided on the surface and/or the back surface of the steel member 24 in the vicinity thereof. Further, the edge fixing material may be indirectly fixed to the steel member 24 by using a convex member, or the weld bead may be used as the edge fixing material.

(Method of manufacturing steel member)
A method for manufacturing a steel member having an anticorrosion coating will be described. First, the edge fixing materials 18 and 28 are fixed to the steel members 14 and 24 by a required method (fixing step). Next, at least one of the roughened surface and the uneven surface is formed on at least a part of at least one of the steel members 14 and 24 and the edge fixing materials 18 and 28 (base adjustment step). Then, in order to enhance the rust-preventive property and the adhesion to a region including at least one of the roughened surface and the uneven surface, an undercoat paint such as an organic zinc rich paint is applied to form a primer layer (primer coating step. ). Then, by applying a material to be an anticorrosion coating on the primer layer (application step), a steel member having the anticorrosion coating is manufactured. The curing material 22 is installed between the fixing process and the applying process. The base material adjusting step and the primer coating step are not essential steps.

(Construction method of wall structure)
The construction of the wall structure composed of the steel members 14 and 24 having the anticorrosion coating is performed so that the position of the lower end surface of the anticorrosion coating 16 and 26 is either below 1 m below the low tide surface or below the average low tide surface. Construction is performed by embedding the manufacturing member in the lower support.

The present invention is not limited to the above-described embodiments of the invention, and various modifications are possible within the scope of the invention described in the claims, and they are also included in the scope of the invention. It goes without saying that it is one.

For example, the thickness of the anticorrosion coatings 16 and 26 shown in the accompanying drawings, the surface shape of the anticorrosion coatings 16 and 26 near the edge fixing materials 18 and 28, the size and shape of the edge fixing materials 18 and 28, and the location The details and the like are merely exemplary. The end surfaces of the anticorrosion coatings 16 and 26 near the edge fixing materials 18 and 28 can be formed into various shapes depending on the shape of the curing material 22 and the installation position.

Moreover, in the said embodiment, although it demonstrated in relation to the case where it is installed in the boundary of a water area structure, in the case where it is installed in the boundary of a land area structure, and other general steel structures ( The steel member having the protective coating of the present invention can also be used in civil engineering/building steel structures installed outdoors, steel plant facilities such as pipes and tanks).

10 wall structure 12 wall 14 steel member (hat-shaped steel sheet pile)
16 Anticorrosion Coating 16a Left and Right End Surfaces 16b Lower End Surface 16c Upper End Surface 18 Edge Fixing Material 20 Welding 22 Curing Material 23 Convex Member 24 Steel Member (Steel Pipe Sheet Pile)
26 Anticorrosion coating 28 Edge fixing material

Claims (21)

An anticorrosive coating having a predetermined shape in a predetermined range of a steel member,
The anticorrosion coating is fixed to the steel member so as to be continuously or discontinuously installed at a position spaced inward from the end surface of a predetermined edge portion of the anticorrosion coating by fixing the anticorrosion coating to the steel member. And an edge fixing material for
In the edge fixing material discontinuously installed, the length of the continuous portion is longer than the length of the discontinuous portion,
A steel member having an anticorrosion coating, characterized in that the location is located outside a planned design anticorrosion coating . The steel member is provided at the boundary between the front surface side and the back surface side of the water area structure or the land area structure, and an anticorrosive coating that is installed in a predetermined range on the front surface and/or the back surface of the steel member; The steel member having an anticorrosion coating according to claim 1 , further comprising an edge fixing material for fixing the coating to the steel member. The edge fixing member is, in claim 1 or 2, characterized in that it is fixed to the steel member so as to extend to the vertical direction at a predetermined distance between each point inward from the right and left end faces of the corrosion protective coating A steel member having the described anticorrosion coating. The edge fixing member is, until claims 1 to 3, characterized in that it is fixed to the steel member so as to extend in the horizontal direction at a predetermined distance between each point upward from the lower end surface of the corrosion protective coating A steel member having the anticorrosive coating described in any one of 1. The edge fixing member is from claim 1, characterized in that it is fixed to the steel member so as to extend in the horizontal direction at a predetermined distance between each point downward from the upper end surface of the corrosion protective coating to Claim 4 A steel member having the anticorrosive coating described in any one of 1. The edge fixing material is indirectly fixed to the steel member by being fixed to a convex member that is continuously or discontinuously fixed to the steel member. A steel member having the anticorrosion coating according to any one of claims 1 to 5 . The steel having an anticorrosion coating according to any one of claims 1 to 6 , wherein the fixing of the edge fixing material to the steel member is performed by welding or mechanical fastening. Made parts. At least one of the steel member and the edge fixing material has at least one of a roughened surface and a concavo-convex surface in all or part of a region in contact with the anticorrosion coating. A steel member having the anticorrosion coating according to any one of claims 1 to 7 . Any said edge portion fixing member is substantially circular, substantially rectangular, substantially triangular, substantially trapezoidal, or from claim 1, characterized in that a steel rod having any cross-section of substantially elliptical shape to claim 8 A steel member having the anticorrosive coating as described in 1 above. The anticorrosion according to any one of claims 1 to 8, wherein the edge fixing material is a weld bead continuously or discontinuously provided on the steel member. A steel member with a coating. The corrosion protection material according to any one of claims 1 to 10 , further comprising a curing material installed in contact with the left and right end surfaces, the lower end surface, or the upper end surface of the anticorrosion coating. A steel member with a coating. Claims discontinuous portion of the edge fixing member disposed discontinuously or discontinuous portions and the surface and / or back surface of the steel member in the vicinity thereof, characterized in that the irregularities are provided A steel member having the anticorrosion coating according to any one of claims 3 to 11 . The discontinuity portion of the edge fixing material provided discontinuously, or the discontinuity portion and the surface and/or back surface of the steel member in the vicinity of the discontinuity portion are provided with unevenness by continuous or discontinuous welding beads. A steel member having the anticorrosion coating according to any one of claims 3 to 11, which is characterized in that The steel member having an anticorrosion coating according to any one of claims 3 to 13 , wherein an anticorrosion coating is also provided on a discontinuous portion of the edge fixing material. The steel member having the anticorrosion coating according to any one of claims 2 to 14 , wherein the steel member is a steel sheet pile, a steel pipe pile, or a steel pipe sheet pile. The steel member having an anticorrosion coating according to any one of claims 2 to 15 , wherein the anticorrosion coating is formed of an organic age hardening material. A wall structure constructed of a steel member having the anticorrosion coating according to any one of claims 2 to 16 . The wall structure according to claim 17 , wherein the position of the lower end surface of the anticorrosion coating is either below 1 m below the low tide surface or below the average low tide surface. A method for manufacturing a steel member having the anticorrosion coating according to any one of claims 2 to 16 .
A fixing step of fixing the edge fixing material to the steel member,
A base material adjusting step of forming at least one of a roughened surface and an uneven surface on at least a part of at least one of the steel member and the edge fixing material,
A primer coating step of forming a primer layer in a region including at least one of the roughened surface and the uneven surface;
A coating step of coating the material to be the anticorrosion coating on the primer layer,
A method for producing a steel member having an anticorrosion coating, comprising: A method for constructing a wall structure constituted by a steel member having the anticorrosion coating according to any one of claims 2 to 16 .
A steel member having an anticorrosion coating, characterized by including a step of burying a position of a lower end surface of the anticorrosion coating in a lower support so that the lower end surface is located at a depth of 1 m or less below the low tide surface or an average low tide surface or below. Construction method for wall structures. The method for constructing a wall structure constituted by a steel member having an anticorrosion coating according to claim 20 , wherein the lower support is a foundation ground or concrete footing.

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