WO2008044434A1 - Structure anticorrosive de revêtement pour structure d'acier - Google Patents

Structure anticorrosive de revêtement pour structure d'acier Download PDF

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Publication number
WO2008044434A1
WO2008044434A1 PCT/JP2007/068104 JP2007068104W WO2008044434A1 WO 2008044434 A1 WO2008044434 A1 WO 2008044434A1 JP 2007068104 W JP2007068104 W JP 2007068104W WO 2008044434 A1 WO2008044434 A1 WO 2008044434A1
Authority
WO
WIPO (PCT)
Prior art keywords
rivet
anticorrosion
protective layer
layer
steel structure
Prior art date
Application number
PCT/JP2007/068104
Other languages
English (en)
Japanese (ja)
Inventor
Yasuhiko Ohno
Shinsuke Shizuru
Tutomu Morikawa
Toshikazu Nakaoka
Original Assignee
Nakabohtec Corrosion Protecting Co., Ltd.
Osaka Seiko, Limited
Nissen Fastener Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nakabohtec Corrosion Protecting Co., Ltd., Osaka Seiko, Limited, Nissen Fastener Co., Ltd. filed Critical Nakabohtec Corrosion Protecting Co., Ltd.
Priority to JP2008538605A priority Critical patent/JPWO2008044434A1/ja
Priority to CN2007800261052A priority patent/CN101490342B/zh
Publication of WO2008044434A1 publication Critical patent/WO2008044434A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/226—Protecting piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/28—Prefabricated piles made of steel or other metals
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
    • E04B1/642—Protecting metallic construction elements against corrosion

Definitions

  • the present invention relates to a coating and anticorrosion structure for a steel structure such as a steel pipe pile constructed in a corrosive environment such as the ocean and a river.
  • a coating method As a corrosion prevention measure for steel structures, a coating method is generally used, but a coating anticorrosion method is often applied to steel structures installed in a marine environment.
  • a protective cover made of plastics, etc. is attached to the outside to protect the anticorrosion layer.
  • the protective cover is attached by providing a flange portion on the protective cover, butting the flange portions together and fastening them with metal bolts and nuts (see Patent Document 1).
  • the flange portions become protrusions, and there is a risk that the drifting object will collide with the flange portions and the cover may be damaged.
  • the protective cover is not provided with a flange portion, and both ends are overlapped when the periphery of the anticorrosion layer is covered.
  • a technique has been proposed in which a circumference is set, a rivet is applied to the overlapping part of both ends surrounding the periphery of the anticorrosion layer, and a protective cover is attached to the outside of the anticorrosion layer.
  • Patent Document 1 Japanese Utility Model No. 4 31321
  • Patent Document 2 Japanese Patent Laid-Open No. 2003-138592 Disclosure of the invention
  • the present invention has been made in view of the above problems, and provides a coated anticorrosive structure for a steel structure that can reduce the number of work steps and can reduce the force and the construction cost. For purposes.
  • an anticorrosion layer is formed on the surface of an existing steel structure, a coating layer having a protection layer is formed outside the anticorrosion layer, and the protection layer is formed of a titanium-based material outside the anticorrosion layer.
  • the object is achieved by providing a coated anticorrosion structure for steel structures of 1 to 2.0.
  • FIG. 1 is a perspective view schematically showing a first embodiment of a coated anticorrosion structure for a steel structure according to the present invention.
  • FIG. 2 is a plan sectional view of the overlapping portion of the protective layer in FIG.
  • FIG. 3 is a view showing an embodiment of a rivet used in the present invention, and is a partial cross-sectional view of only a rivet body as seen in a half cross section.
  • FIG. 4 is a cross-sectional view schematically showing one embodiment of the covering structure of the vertical seam of the protective layer.
  • FIG. 5 is a cross-sectional view schematically showing one embodiment of a covering structure of a vertical seam of a protective layer.
  • FIG. 6 is a plan cross-sectional view schematically showing a second embodiment of the coated anticorrosion structure for steel structures of the present invention.
  • FIG. 7 is a perspective view schematically showing one form of a protective layer provided with deformation suppressing means used in the second embodiment of the coated anticorrosive structure for a steel structure of the present invention.
  • FIG. 8 is a plan sectional view of an essential part schematically showing a third embodiment of the coated anticorrosion structure for steel structures of the present invention.
  • FIG. 9 is a diagram showing the results of durability tests of titanium rivets (current change over time in holding a constant potential).
  • FIG. 1 and FIG. 2 schematically show a first embodiment in which the present invention is applied to a steel pipe pile covering anticorrosion structure (hereinafter also simply referred to as a covering anticorrosion structure).
  • the coated anticorrosion structure 1 is a coating in which the anticorrosive layer 2 is formed on the surface of the steel pipe pile 10 to be anticorrosive, and the protective layer 3 is provided outside the anticorrosive layer 2.
  • the layer 4 is formed, and the protective layer 3 is fixed to the outer side of the anticorrosive layer 2 with a rivet 5 made of a titanium-based metal.
  • the anticorrosion layer 2 is preferably composed of at least one anticorrosion material selected from a petrolatum-based anticorrosion material, an underwater curable resin, and a resin foam material.
  • the anticorrosive material based on petrolatum include a composition containing petrolatum as a main component and containing a corrosion inhibitor and the like.
  • the petrolatum-based anticorrosive material is used in the form of a paste or a tape or sheet obtained by impregnating the paste in a non-woven fabric made of synthetic resin such as nylon or polyester.
  • the curable resin include epoxy resins, urethane resins, silicone resins, polysulfide resins, and polyester resins.
  • the resin foam material include polyurethane resins, polystyrene resins, polyethylene resins, rubber resins, and the like.
  • the curable resin preferably contains a water-absorbing polymer.
  • a water-absorbing polymer By including the water-absorbing polymer in this way, the moisture on the surface of the steel pipe pile is immediately absorbed by the water-absorbing polymer, and the surface of the steel pipe pile is free of moisture that hinders resin adhesion. Can be easily bonded to the steel pipe pile.
  • a water-absorbing polymer include polyacrylic acid salt, butyl acetate saponified acrylate ester copolymer, polyacetic acid butyl.
  • Maleic anhydride reactant cross-linked isobutylene / maleic acid copolymer, polyethylene
  • examples include cisid, starch 'acrylic acid graft copolymer, polybulal alcohol, polybulu N-bulucacetamide, etc., and 100 to 100 parts by weight of the curable resin is added in an amount of 1 to 200 parts by weight. I like it! /
  • a water-soluble corrosion inhibitor or oxygen scavenger is added to the curable resin.
  • water-soluble corrosion inhibitors include orthophosphates and polyphosphoric acids. Salts, nitrites, benzoates, silicates, etc. are used. Sodium nitrite, hydrazide are used as oxygen scavengers. Are used.
  • the protective layer 3 can be made of a material that has been conventionally used for this type of protective layer without any particular limitation.
  • the protective layer 3 is preferably composed of a protective cover made of a molded body of metal, plastics or fiber reinforced plastics, for example. Considering mechanical strength, flexibility, workability of attaching the protective layer 3 and cost, a fiber-reinforced plastic molded body is preferred.
  • Examples of the metal include titanium or an alloy thereof, aluminum or an alloy thereof, and water-resistant stainless steel. Considering corrosion resistance, titanium or its alloy is preferable. From the viewpoint of ease of handling and cost, seawater resistant stainless steel is preferable.
  • thermosetting resin or a thermoplastic resin can be used for the plastics.
  • these resins include polyester resin, epoxy resin, polypropylene resin, polychlorinated resin, and high-strength polyethylene.
  • the reinforcing fiber of the fiber reinforced plastic include glass fiber, carbon fiber, and organic fiber. The form of the reinforcing fiber is conventionally used for this type of anticorrosion layer, such as those cut to a predetermined length, non-woven sheets, sheets knitted into cloth, and brushed sheets. Can be used without particular limitation.
  • the plastics may contain an appropriate amount of a curing agent conventionally used depending on the type of the plastics as a polymerization catalyst.
  • a curing agent such as an unsaturated polyester epoxy resin
  • an organic peroxide, an acid anhydride, a modified aliphatic polyamine, an aromatic polyamine or the like can be used as a curing agent.
  • an organic peroxide to the unsaturated polyester it is preferable to add 0.5 to 2.0% by weight in consideration of complete curing and heat generation during curing.
  • thermoplastic resin such as saturated polyester, polypropylene, polychlorinated bur resin, or polyethylene
  • a cup made of a silane compound or the like is taken into consideration in order to improve the strength by bonding with the reinforcing fiber. It is preferable to include a ring agent in an appropriate amount.
  • the thickness of the protective layer 3 can be set to an appropriate thickness according to the construction environment of the steel pipe pile 10 such as the magnitude of waves and the appearance frequency of drifting objects.
  • a cushioning material conventionally used for this type of anticorrosion layer (Not shown).
  • the buffer material include a resin foam such as polyethylene, polyurethane, and polystyrene, or a sheet made of synthetic rubber.
  • the buffer material can be fixed to the inner surface of the protective layer 3 with an adhesive.
  • the adhesive it is possible to use a material that has been conventionally used for bonding the protective layer 3 and the buffer material without any limitation. Considering the adhesion between plastics and the fact that the surface of the cushioning material is porous, it is preferable to use an adhesive such as a rubber or epoxy resin.
  • the rivet used in the present invention is made of a titanium-based metal.
  • the titanium-based metal refers to pure titanium or a titanium alloy.
  • the rivet used in the present invention is composed of a cylindrical rivet body and a mandrel provided in the rivet body.
  • the rivet body has a flange portion projecting outward at one end portion, and the mandrel has a rear end portion.
  • the rivet body has a larger outer diameter than the end opposite to the flange portion of the rivet body, and has a head portion.
  • the power S is preferable.
  • the ratio of the breaking load between the rivet body and the mandrel is within this range, sufficient fastening strength for securing the protective cover can be obtained by deformation of the rivet body and breakage of the mandrel.
  • the breaking load of the rivet body is the same material as the rivet body used, and the cross-sectional area of the rivet body is set to the tensile strength (wire strength) required by the JIS Z2241 metal material tensile test method. Calculated by multiplication.
  • a preferable range of the breaking load of the rivet body is a range obtained by multiplying a range of 380 to 500 MPa by the wire strength by a cross-sectional area of the preferable rivet body (8.0 to 8 ⁇ 8 mm 2 ).
  • the cross section of the rivet body to be used is the cross section of the cylindrical portion except for the flange portion, and the cross section of the straight portion 502C (see FIG. 3) of the deformed portion described later.
  • the breaking load of the mandrel is represented by "breaking load” obtained by the “JIS B 1087 mandrel breaking load test” using the target mandrel.
  • the preferred range for the mandrel breaking load is 6,000-8,500N. If the breaking load of the mandrel is within the above range, the rivet body will be deformed without problems, and sufficient fastening strength for securing the protective cover will be obtained.
  • the rivet having the ratio of the breaking load as described above is composed of, for example, rivet body force SJIS Class 1 (AST MG ;!) to Class 3 (ASTM G3) pure titanium, and Mandrelka SJIS Class 1 to Class JIS4 ( ASTM G3) pure titanium, JIS 60 class (ASTM G5, N: 0.05 mass% max, C: 0.08 mass% 111 &, H: 0.015 mass% 111 &, Fe: 0.30 mass% 111 &, O: 0.20 mass% 111 ax , Al: 5.5-6.75 mass 0/0, V: 3.5-4.5 wt 0/0, the remaining Ti) to 61 species (ASTM G9, N: 0.02 wt% 111 &, C: 0.08 wt% 111 &, ⁇ : 0 ⁇ 015 :% max, Fe: 0.25 mass% max, 0: 0.12 wt% 111 &, Al: 2.5 ⁇ 3.5 wt%, V: 2.0 to 3.
  • the preferred combination of the rivet body and mandrel material constituting the rivet is a combination as shown in Table 1, and it has been found that it is a component.
  • FIG. 3 shows a preferred embodiment of the rivet used in the present invention.
  • the rivet 5 is composed of a cylindrical rivet body 50 and a mandrel 51 provided in the rivet body 50.
  • One end of the rivet body 50 is provided with a flange portion 501 that projects outward.
  • the other end portion of the rivet body 50 is provided with a deformed portion 502 that bulges outward along with the mandrel 51 and caulks the protective cover 30 with the flange portion 501.
  • the deformable portion 502 has a straight portion 502C between the front and rear tapered portions 502A and 502B.
  • the mandrel 51 has a head portion 511 at the rear end. When the protective cover 30 is fastened with the rivet 5, the head portion 511 crushes the deformed portion 502 of the rivet body 50 toward the flange portion 501.
  • a V-shaped ring groove 512 for guiding cutting is provided on the outer periphery of a portion of the mandrel 51 located in the rivet body 50.
  • Concave and convex shapes are provided on the inner peripheral surface of the tapered portion 502A of the rivet body 50 and the outer peripheral surface of the mandrel 51 corresponding to the tapered portion 502A so as to rub each other.
  • the length from the lower surface of the flange portion 501 to the deformable portion 502 is set according to the thickness of the protective cover 30 and the like.
  • the length of the taper part 502A is L502A (1.5 to 2.5mm, preferably 1.8 to 2.0mm, and teno.
  • Length of 502B: L502B (between 0.5 and 1.5 mm, preferably 0.8 and more preferably 1.0 mm.
  • length of straight 502C: L502C is 4.5— 5. 5 mm is preferable, and 4.8 to 5.2 mm is more preferable.
  • blind rivets for example, as long as they satisfy the relationship of the rupture load ratio between the rivet body and the mandrel as described above and the relationship of the titanium-based metal used in them, for example, Open type and closed type blind rivets can also be used.
  • the rivet 5 can be colored in accordance with the color of the protective cover 30 so as to have an anticorrosion structure that does not impair the scenery of the anticorrosion object.
  • the rivet is colored by an anodic oxidation method, and the coloring can be controlled by the liquid used and the applied voltage.
  • the interval between the rivets 5 is set according to the mass of the protective layer 3. If the mass of the protective layer 3 is small, it can be fixed in one row. If the mass is large, it must be in two or more rows. It is preferable to fix.
  • the interval between adjacent rivets is preferably 50 to 300 mm, more preferably 70 to 150 mm. In the case of multiple rows, it can be fixed in a staggered arrangement.
  • the protective cover 30 constituting the protective layer 3 is made of relatively soft polyethylene, it is preferable to fix in two rows as in this embodiment.
  • the substrate preparation method is a method of substrate preparation (e.g. ISOSt2
  • the surface of the anticorrosion layer 2 is covered with a protective cover 30 constituting the protective layer 3, and the lap portions are overlapped and positioned. Then, using a tool such as a drill, the through hole 31 of the rivet 5 is formed so as to penetrate the lap portion of the protective cover 30. Then, the tip of the rivet 5 is inserted into the through-hole 31 and the rivet 5 is caulked and fixed with a rivet fastening device, and the protective layer 3 is fixed to the surface of the anticorrosion layer 2.
  • the steel pipe pile 10 is covered.
  • the belt-like cover plate 6 made of the same material as the protective cover 30 of the protective layer 3 is formed at the joint. Then, rivet 5 is inserted so that it penetrates the cover plate 6 and protective cover 30 of protective layer 3, and the tip of rivet 5 is inserted.
  • the cover plate 6 is preferably fixed to the anticorrosion layer 2 together with the protective cover 30 of the protective layer 3 to close the joint.
  • a lap portion is provided at the joint of the upper and lower protective covers 30 to form the insertion hole 33 of the rivet 5 so as to penetrate the lap portion, and the insertion hole 33 Insert the tip of the rivet 5 into the rivet 5 and crimp the rivet 5 to plug the seam!
  • the seam may be sealed by filling the gap between the protective covers of the protective layer with a resin.
  • the protective cover 30 is fixed.
  • the rivet 5 to be fixed is made of a specific titanium-based metal and consists of a rivet body and mandrel with a specific breaking load ratio, which eliminates the need for conventional resin filling for corrosion protection of the rivet head. Therefore, the work process can be reduced, and the power can be reduced.
  • the surface finish is excellent in a rugged appearance with few irregularities.
  • the coated anticorrosion structure 1 ′ for the steel structure according to the second embodiment shown in FIG. 6 is provided with the deformation suppressing means 33 in the protective layer 3 so as to keep a distance from the steel pipe pile 10.
  • the protective layer 3 is mainly composed of two protective covers 30 having a semicircular cross section, and the protective covers 30 are arranged so as to cover the periphery of the steel pipe pile 10, and It is fixed by rivets 5 with the sides overlapped with a predetermined width.
  • the deformation suppressing means 33 is provided so that a strong force acts on the protective cover 30 and the protective cover 30 bends, and damage to the fixed portion of the protective cover 30 by the rivet 5 does not occur. That is, even when a strong force is momentarily applied to the protective cover 30 due to strong waves or the like, the deformation suppressing means 33 functions as a spacer so that the distance from the steel pipe pile 10 is maintained. By preventing excessive deformation of the cover 30, the fixing parts between the protective covers 30 with the rivets 5 are prevented from being damaged.
  • the protruding length from the inner surface of the protective cover 30 is set according to the thickness of the anticorrosion layer 2, and considering the wave pressure and the mechanical properties of the protective cover 60-60% of the thickness of the anticorrosion layer 2 It is preferable that For example, when the thickness of the anticorrosion layer 2 is 5 to 10 mm, it is preferable that the protrusion length of the deformation suppressing means 33 from the inner surface of the protective cover 30 is 3 to 8 mm.
  • the deformation suppressing means 33 may be disposed so as to protrude entirely from the inside of the protective cover 30 or may be partially disposed.
  • the deformation suppressing means 33 is previously applied to the protective cover 30 as shown in FIG. In the form, rivets 330) should be provided. It is preferable because the business efficiency is improved.
  • the deformation restraining means 33 is a force that can be dealt with by fixing a hard member made of metal or plastic in advance to the inner surface of the protective cover 30 so as to function as described above. In order to follow a regular shape, it is preferable that the rivet 330 is used as in the present embodiment. If the rivet 330 as the deformation restraining means 33 has a shape protruding from the inner surface of the protective cover 30 by a predetermined length so as to function as a spacer that keeps the distance from the steel pipe pile 10, it will be in that form. There is no particular limitation.
  • the rivets 330 are preferably provided on the protective cover 30 vertically and horizontally at predetermined intervals.
  • the rivet 330 is preferably made of the same material as the rivet 5, but other rivets can be used.
  • a metal rivet made of aluminum or an alloy thereof, stainless steel or the like, or a plastic rivet made of nylon, polycarbonate or the like can be used.
  • the coated anticorrosion structure 1 'of the second embodiment includes the deformation suppressing means 33 in the protective cover 30 that constitutes the protective layer 3, and is thus constructed at a location where a strong force is repeatedly received instantaneously by waves. Suitable for coating corrosion prevention of steel structures.
  • the coating anticorrosion structure 1 ′ of the third embodiment shown in FIG. 8 includes a covering means 34 that covers the fixed portion of the protective layer 3.
  • the covering means 34 functions to disperse the impact received by the fixed portion of the protective layer 3 due to waves or the like.
  • the covering means 34 is not particularly limited as long as it can cover the fixed portion of the protective layer 3.
  • the protective covers 30 constituting the protective layer 3 are arranged so as to cover the periphery of the steel pipe pile 10, and their side portions overlap each other with a predetermined width. In the combined state, it is fixed by rivets 5.
  • the covering means 34 is mainly composed of an arc-shaped cover plate 340 that covers the fixing portions of the protective covers 30 that constitute the protective layer 3 by the rivets 5.
  • the cover plate 340 is arranged so as to cover the fixing portion by positioning the fixing portion of the protective cover at the center in the width direction, and is fixed to the protective cover 30. Fix the cover plate 340 to the protective cover 30 so that it passes through both sides of the cover plate 340 and the protective cover 330 that touches both sides.
  • the cover plate 340 should preferably be made of the same material as the protective cover 30.
  • the horizontal distance between the rivets 341 can be set according to the shape and dimensions of the steel pipe pile. For example, in the case of a steel pipe pile with a diameter of 700 mm, the stress applied to the rivet fixing part can be dispersed if it is 100 mm or more. Especially when impact resistance and durability are required, it is preferable to fix the rivets 341 in two or more rows near both sides of the cover plate 340! /.
  • the covering means 34 is provided in the fixing portion of the protective layer 3, so that even when a strong impact or the like acts on the fixing portion, the impact is dispersed. Power S can be. Therefore, it is suitable for the corrosion protection of steel structures constructed in the ocean where strong impact is caused by waves.
  • a rivet is adopted as a means for suppressing deformation of the protective layer, but a bolt and nut can be adopted instead of the rivet.
  • the deformation suppressing means may be formed by a protruding portion that is provided integrally with the protective layer and protrudes inside thereof.
  • protrusions such as ribs and protrusions can be formed integrally with the protective cover on the inner side of the protective cover constituting the protective layer, and this can be used as a deformation suppressing means.
  • Durability test A rivet polarization test in natural seawater was conducted to examine the durability of the rivet.
  • the set potential is set to a higher potential (2. OVvsSSE) compared to the natural potential in seawater (rivet body 0.3 VvsSSE, mandreloo 0. IVVSSSE) and maintained for about 30 days (current density) Was measured, and the state of the rivet after the measurement was examined.
  • Figure 9 shows the polarization test results.
  • the coated anticorrosive structure of a steel structure of the present invention the coated anticorrosive with high anticorrosive properties can be applied to the steel structure installed in the corrosive environment of the ocean or river with good workability and The increase in cost can also be suppressed.
  • the steel structure covering anticorrosion structure of the present invention is suitably used for covering anticorrosion of steel pipe piles constructed in corrosive environments such as the ocean and rivers.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Piles And Underground Anchors (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)

Abstract

L'invention concerne une structure anticorrosive de revêtement pour pieu tubulaire en acier. Cette structure comprend une couche anticorrosive (2) disposée sur la surface d'une structure en acier existante (10); et une couche de revêtement (4) présentant une couche protectrice (3) disposée sur le côté externe de la couche anticorrosive (2), la couche protectrice (3) étant fixée sur le côté externe de la couche anticorrosive (2) au moyen d'un rivet (5) de titane métallique. Le rapport de charge à la rupture entre le corps de rivet (50) et le mandrin (51) du rivet (5) satisfait la relation corps de rivet : mandrin = 1 : 1,1 à 2,0. Le corps de rivet (50) consiste, de préférence, en titane pur de type 1 à type 3 JIS, et le mandrin (51) consiste de préférence en titane pur de type 2 à type 4 JIS ou en un alliage de titane de type 60 JIS.
PCT/JP2007/068104 2006-10-13 2007-09-18 Structure anticorrosive de revêtement pour structure d'acier WO2008044434A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008538605A JPWO2008044434A1 (ja) 2006-10-13 2007-09-18 鋼構造物の被覆防食構造
CN2007800261052A CN101490342B (zh) 2006-10-13 2007-09-18 钢构造物的覆盖防腐蚀构造

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JP2006-280107 2006-10-13
JP2006280107 2006-10-13

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WO2008044434A1 true WO2008044434A1 (fr) 2008-04-17

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CN102747752A (zh) * 2011-04-18 2012-10-24 张琨 电力钢管铁塔用钢管桩的防腐蚀方法
NL1039137C2 (nl) * 2011-10-27 2013-05-06 Dutch Heavy Lift Concepts B V Losneembare afdichtingsmanchet voor paalfundaties e.d. op zee.
JP2013087539A (ja) * 2011-10-20 2013-05-13 Nippon Steel & Sumitomo Metal 被覆構造および海洋鋼構造物
JP2015187364A (ja) * 2014-03-27 2015-10-29 新日鐵住金株式会社 鋼管矢板の防食構造
DE102020117497A1 (de) 2020-07-01 2022-01-05 Langenhan Industrieservice e. K. Inh. Claus Langenhan Schutzummantelung für pfahlartige Bauelemente

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CN102505679A (zh) * 2011-07-14 2012-06-20 大连美宸特科技有限公司 一种带有涂层的防水防腐预应力空心桩
JP6130089B1 (ja) * 2017-02-24 2017-05-17 伸和テクノス株式会社 第１部品の開口部を第２部品で覆う方法
CN108043592A (zh) * 2017-12-07 2018-05-18 西部矿业股份有限公司 一种硫浮选工艺中浮选槽的防腐蚀方法
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JP2015187364A (ja) * 2014-03-27 2015-10-29 新日鐵住金株式会社 鋼管矢板の防食構造
DE102020117497A1 (de) 2020-07-01 2022-01-05 Langenhan Industrieservice e. K. Inh. Claus Langenhan Schutzummantelung für pfahlartige Bauelemente

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