JPH0725047U - Protective cover for anticorrosion and antifouling of steel structures - Google Patents
Protective cover for anticorrosion and antifouling of steel structuresInfo
- Publication number
- JPH0725047U JPH0725047U JP6103893U JP6103893U JPH0725047U JP H0725047 U JPH0725047 U JP H0725047U JP 6103893 U JP6103893 U JP 6103893U JP 6103893 U JP6103893 U JP 6103893U JP H0725047 U JPH0725047 U JP H0725047U
- Authority
- JP
- Japan
- Prior art keywords
- anticorrosion
- steel structure
- copper
- protective cover
- antifouling
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Revetment (AREA)
Abstract
(57)【要約】
【目的】 鉄鋼構造物に水中生物が付着するのを防止す
ると共に防食作用も有する保護カバーを提供する。
【構成】 水中から水面上にわたって構築される鋼管杭
5などの鉄鋼構造物の外面と類似の内面形状を有するプ
ラスチック成形物2の外面に銅または銅合金よりなる金
属層3を設けたことを特徴とする鉄鋼構造物の防食防汚
保護カバー。
(57) [Abstract] [Purpose] To provide a protective cover which prevents adhesion of aquatic organisms to a steel structure and also has an anticorrosive action. [Structure] A metal layer 3 made of copper or a copper alloy is provided on the outer surface of a plastic molded product 2 having an inner surface shape similar to the outer surface of a steel structure such as a steel pipe pile 5 constructed from underwater to above the water surface. Anti-corrosion and anti-fouling protective cover for steel structures.
Description
【0001】[0001]
この考案は、例えば、鋼管杭、鋼矢板、鋼管矢板等の鉄鋼構造物の海水または 淡水の没水部、干満部および飛沫帯における腐食を防止するとともに該鉄鋼構造 物の没水部、干満部に貝類などの水中生物が付着するのを防止するための保護カ バーに関するものである。 This invention prevents corrosion in seawater or freshwater submerged parts, tidal parts and splash zones of steel structures such as steel pipe piles, steel sheet piles, steel pipe sheet piles, etc., as well as submerged parts and tidal parts of the steel structures. It relates to a protective cover for preventing the adhesion of aquatic organisms such as shellfish.
【0002】[0002]
一般に、鋼管杭、鋼矢板、鋼管矢板等の鉄鋼構造物は、干満部や飛沫帯におい て水の接触と空気中の酸素の接触が繰り返されるため、特に腐食が激しく、さら に該鉄鋼構造物の没水部や干満部には貝類が多量に付着し、貝類が付着すると美 観を損ねるばかりでなく、波浪に対する抵抗が増し、構造体としての耐力安全性 が低下することなどが知られている。 In general, steel pipe piles, steel sheet piles, steel pipe sheet piles, and other steel structures are particularly corroded due to repeated contact of water and oxygen in the air in the tidal parts and splash zones, and further It is known that a large amount of shellfish adheres to the submerged and tidal parts of the seawater, which not only impairs the appearance but also increases the resistance to waves and reduces the strength and safety of the structure. There is.
【0003】 該鉄鋼構造物の没水部や干満部における腐食および水中生物の付着を防止する 方法として、従来から鉄鋼構造物に防食塗装を施し、その上層に有機錫化合物を 塗布する方法が広く用いられていたが、近年、有機錫化合物の毒性および魚介類 への残留性が問題となり、その使用が制限されるようになってきた。As a method for preventing corrosion in the submerged part and tidal part of the steel structure and adhesion of aquatic organisms, conventionally, a method of applying anticorrosion coating to the steel structure and applying an organic tin compound to the upper layer thereof has been widely used. Although it has been used, in recent years, the toxicity of organotin compounds and their persistence in seafood have become problems, and their use has come to be restricted.
【0004】 このため、水中生物が付着しにくく、毒性がほとんど問題とならないことが古 くから知られている銅および銅合金が安全性の観点から再び注目されてきた。し かし銅または銅合金を直接鉄鋼構造物表面に接触させると、鉄鋼構造物の該接触 部分が集中的に腐食するという欠点があった。Therefore, from the viewpoint of safety, copper and copper alloys, which have long been known that aquatic organisms are unlikely to attach and toxicity is hardly a problem, have been regained attention from the viewpoint of safety. However, when copper or copper alloy is directly contacted with the surface of a steel structure, there is a drawback that the contact portion of the steel structure is intensively corroded.
【0005】 そこで、銅または銅合金を使用した鉄鋼構造物の防食防汚方法として、例えば 、海中に没する鉄鋼構造物の表面に、該鉄鋼構造物を海中に構築する前に予め絶 縁性材料のコーティングまたはライニングを施し、その上に銅または銅合金を溶 射する方法が提案されている(特開昭59−145074号公報参照)。Therefore, as a method for anticorrosion and antifouling of a steel structure using copper or a copper alloy, for example, on the surface of the steel structure submerged in the sea, it is necessary to insulate the steel structure in advance before constructing the steel structure in the sea. A method of coating or lining a material and spraying copper or a copper alloy on the material has been proposed (see JP-A-59-145074).
【0006】[0006]
上記絶縁性材料のコーティングまたはライニングの上に銅または銅合金を溶射 する方法は、新たに海中に構築する鉄鋼構造物に対して海洋生物が付着するのを 防止するには有効であるが、既に海中に構築された鉄鋼構造物にコーティングま たはライニングを施し、その上に銅または銅合金を溶射することは技術的に不可 能であった。そのため、鉄鋼構造物に予め絶縁性材料のコーティングまたはライ ニング並びに銅または銅合金の金属層からなる溶射膜を形成した鉄鋼構造物を海 中に構築していた。しかし、絶縁性材料のコーティングまたはライニングの上に 銅または銅合金溶射皮膜を形成した鉄鋼構造物を海中に構築する際に、打設しな ければならないことがあり、打設時の機械的振動や衝撃によって絶縁性材料のコ ーティングまたはライニング並びに銅または銅合金溶射皮膜の一部が剥離または 破損することがある。 Although the above-mentioned method of spraying copper or copper alloy onto the coating or lining of the insulating material is effective in preventing marine organisms from adhering to newly constructed steel structures in the sea, It was technically impossible to coat or line a steel structure constructed in the sea and spray copper or a copper alloy on it. Therefore, a steel structure has been constructed in the sea, in which a steel structure is coated or lined with an insulating material in advance and a sprayed film made of a metal layer of copper or a copper alloy is formed. However, when constructing a steel structure with a copper or copper alloy sprayed coating formed on a coating or lining of insulative material in the sea, it may be necessary to pour, and the mechanical vibration during piling In some cases, the coating or lining of insulating material and a part of the copper or copper alloy sprayed coating may be peeled or damaged due to shock or impact.
【0007】 かかる剥離または破損の個所を補修することは上述の如く不可能であり、さら に銅または銅合金溶射皮膜が消耗した場合に再度溶射し直すことも不可能であっ た。As described above, it is impossible to repair such peeling or damage, and it is also impossible to re-spray the copper or copper alloy sprayed coating when it is exhausted.
【0008】[0008]
そこで本考案者等は、かかる従来技術の課題を解決するべく研究を行った結果 、 水中から水面上にわたって構築される鉄鋼構造物の外面と類似の内面形状を有 するプラスチック成形物の外面に銅または銅合金からなる金属層を設けた鉄鋼構 造物の防食防汚保護カバーを作製しておき、この防食防汚保護カバーを海中にす でに構築された鉄鋼構造物にボルト等により取り付けると、鉄鋼構造物構築時の 上記剥離または破損を防止することができ、さらに、長期間の使用により絶縁性 材料のコーティングまたはライニングが破損し銅または銅合金などの金属層が消 耗しても、上記防食防汚保護カバーを交換することにより簡単に補修することが できるという知見を得たのである。 Therefore, the inventors of the present invention have conducted research to solve the problems of the prior art, and as a result, the copper on the outer surface of a plastic molding having an inner surface shape similar to the outer surface of a steel structure constructed from underwater to above the water surface. Alternatively, a corrosion-resistant and anti-fouling protective cover for a steel structure provided with a metal layer made of a copper alloy is prepared in advance, and the anti-corrosion and anti-fouling protective cover is attached to a steel structure constructed in the sea by bolts or the like. It is possible to prevent the above-mentioned peeling or damage when building a steel structure, and further, even if the coating or lining of the insulating material is damaged due to long-term use and the metal layer such as copper or copper alloy wears out, We have obtained the knowledge that repairs can be easily done by replacing the anticorrosion and antifouling protection cover.
【0009】 この考案は、かかる知見に基づいてなされたものであって、 水中から水面上にわたって構築される鉄鋼構造物の外面と類似の内面形状を有 するプラスチック成形物の外面に銅または銅合金からなる金属層を設けた鉄鋼構 造物の防食防汚保護カバーに特徴を有するものである。The present invention has been made on the basis of such findings, and copper or copper alloy is formed on the outer surface of a plastic molded product having an inner surface shape similar to the outer surface of a steel structure constructed from underwater to water surface. It is characterized by an anticorrosion and antifouling protective cover for a steel structure provided with a metal layer consisting of.
【0010】[0010]
この考案に係る防食防汚保護カバーについて、その作用および構成を図面に基 づいて一層具体的に説明する。 The function and configuration of the anticorrosion and antifouling cover according to the present invention will be described more specifically with reference to the drawings.
【0011】 図1は、この考案の防食防汚保護カバーの斜視図であり、この考案の防食防汚 保護カバー1は水中から水平上にわたって構築される鉄鋼構造物の外面と類似の 内面形状を有するプラスチック成形物2および該プラスチック成形物2の外面に 形成された銅または銅合金の金属層3から構成されている。FIG. 1 is a perspective view of an anticorrosion and antifouling protective cover of the present invention. The anticorrosion and antifouling protective cover 1 of the present invention has an inner surface shape similar to the outer surface of a steel structure constructed horizontally from underwater. The plastic molded product 2 and the metal layer 3 of copper or copper alloy formed on the outer surface of the plastic molded product 2.
【0012】 該防食防汚保護カバー1を鉄鋼構造物5に取り付けるには、防食防汚保護カバ ー1のフランジ部4を拡げて図2に示されるように鉄鋼構造物5の周囲を防食防 汚保護カバー1で包囲し、ボルト6で締め付けて防食防汚保護カバー1を鉄鋼構 造物5に固定する。この時、防食防汚保護カバー1と鉄鋼構造物5の間に防食材 7を挟む。In order to attach the anticorrosion / antifouling protection cover 1 to the steel structure 5, the flange portion 4 of the anticorrosion / antifouling protection cover 1 is expanded so that the periphery of the steel structure 5 is anticorrosion / antifouling as shown in FIG. It is surrounded by the stain protection cover 1 and tightened with bolts 6 to fix the anticorrosion and stain protection cover 1 to the steel structure 5. At this time, the anticorrosion material 7 is sandwiched between the anticorrosion / fouling protection cover 1 and the steel structure 5.
【0013】 プラスチック成形物2と金属層3とは密着性が悪く、そのため防食防汚保護カ バー1のフランジ部4を広げて鉄鋼構造物5に取付ける際にプラスチック成形物 2と金属層3との物理的特性が著しく相違するので、プラスチック成形物2から 金属層3が剥離することがある。特に金属層3が溶射によりプラスチック成形物 2の外面に形成された場合に頻発する。防食防汚保護カバー1の溶射による金属 層3の剥離を防止するために、図3の断面図に示されるように、外面に凹部8お よび凸部9を形成したプラスチック成形物2を作製し、このプラスチック成形物 2の外面に金属層3を溶射により形成すると、プラスチック成形物2と金属層3 は機械的な密着強度も加わって一層強固に密着し、フランジ部4を広げて金属層 3がプラスチック成形物2から剥離することはない。その他、図4の断面図に示 されるように、外面に金属ワイヤ10を埋込んだプラスチック成形物2を用意し 、その外面に溶射による金属層3を形成してもよい。Since the plastic molded product 2 and the metal layer 3 have poor adhesion, the plastic molded product 2 and the metal layer 3 are spread when the flange portion 4 of the anticorrosion / fouling protection cover 1 is expanded and attached to the steel structure 5. The metal layer 3 may be peeled off from the plastic molded product 2 because the physical properties of the resin are significantly different. In particular, it frequently occurs when the metal layer 3 is formed on the outer surface of the plastic molded product 2 by thermal spraying. In order to prevent the metal layer 3 from peeling off due to thermal spraying of the anticorrosion / fouling protection cover 1, a plastic molded product 2 having a concave portion 8 and a convex portion 9 formed on the outer surface thereof was prepared as shown in the sectional view of FIG. When the metal layer 3 is formed on the outer surface of the plastic molded product 2 by thermal spraying, the plastic molded product 2 and the metal layer 3 are more firmly adhered by adding mechanical adhesion strength, and the flange portion 4 is widened to expand the metal layer 3. Does not peel off from the plastic molded product 2. Alternatively, as shown in the cross-sectional view of FIG. 4, a plastic molded product 2 in which the metal wire 10 is embedded on the outer surface may be prepared, and the metal layer 3 formed by thermal spraying may be formed on the outer surface.
【0014】 金属層2は、上述の如く溶射による金属層に限定されるものではなく、金属製 薄板または金網を鋲または接着剤でプラスチック成形物2の外面に固定してもよ い。この考案の別の防食防汚保護カバーとしては、図5の斜視図に示されるよう に、2つのフランジ部4,4を有するプラスチック成形物2′の外面に金属層2 を形成した防食防汚保護カバー1′であってもよい。この防食防汚保護カバー1 ′を2個一組として鉄鋼構造物5を挟み、ボルト6を締付けることにより図6の 断面図に示されるように鉄鋼構造物5に防食防汚保護カバー1′を取り付けるこ とができる。この時にも防食材7を鉄鋼構造物5と防食防汚保護カバー1′の間 に挟むことにより防食効果を一層向上させることができる。The metal layer 2 is not limited to the metal layer formed by thermal spraying as described above, but a metal thin plate or a wire net may be fixed to the outer surface of the plastic molded product 2 with a tack or an adhesive. As another anticorrosion and antifouling protective cover of the present invention, as shown in the perspective view of FIG. 5, an anticorrosion and antifouling in which a metal layer 2 is formed on the outer surface of a plastic molding 2'having two flange portions 4 and 4. It may be the protective cover 1 '. As a set of two anticorrosion and antifouling protection covers 1 ', the steel structure 5 is sandwiched and bolts 6 are tightened to attach the anticorrosion and antifouling protection cover 1'to the steel structure 5 as shown in the sectional view of FIG. Can be attached. Also at this time, the anticorrosion effect can be further improved by sandwiching the anticorrosive material 7 between the steel structure 5 and the anticorrosion / antifouling protective cover 1 '.
【0015】[0015]
フランジ部を有するガラス繊維入りポリプロピレン製のプラスチック成形物の 外面に厚さ:約0.2mmの純銅溶射被膜を形成した図1に示される形状の防食防 汚保護カバーを作製し用意した。 An anticorrosion and antifouling protective cover having the shape shown in FIG. 1 was prepared in which a pure copper sprayed coating having a thickness of about 0.2 mm was formed on the outer surface of a plastic molding made of glass fiber-containing polypropylene having a flange portion.
【0016】 一方、新設桟橋の鋼管杭の干潮時水位よりも約0.5m下部からコンクリート フーチング下端の間を防食材(ペトロラタム、タンニンおよび防錆剤を含浸させ たテープ状の不織布)で覆い、その上に該防食防汚保護カバーをかぶせ、ボルト 締めすることにより鋼管杭に固定し、この状態で1年間放置した。1年間放置後 に海洋生物の付着状況を観察した結果、海洋生物の付着はほとんど観察されなか ったが防食防汚保護カバーの純銅溶射被膜の破損が顕著であったため新しい防食 防汚保護カバーに交換し補修を完了した。On the other hand, the steel pipe pile of the new pier is covered with anti-corrosion materials (tape-shaped non-woven fabric impregnated with petrolatum, tannin and rust preventive agent) from about 0.5 m below the water level at low tide to the bottom of the concrete footing. Then, the anticorrosion and antifouling protective cover was put on it, and it was fixed to the steel pipe pile by tightening bolts, and left in this state for one year. As a result of observing the adhesion state of marine organisms after leaving it for 1 year, almost no adhesion of marine organisms was observed, but the damage of the pure copper sprayed coating of the anticorrosion and antifouling protective cover was remarkable, so the new anticorrosion and antifouling protective cover Exchanged and repaired.
【0017】 比較のために、表面にエポキシ樹脂を塗布し、その上に純銅の溶射被膜を形成 した被覆鋼管杭を用意し、この被覆鋼管杭を打設し、従来法による桟橋を新設し たところ、打設時の衝撃によりエポキシ樹脂塗布膜および純銅溶射被膜の一部が 破損した。しかし、そのまま1年間放置し、1年経過後に海洋生物の付着状況を 観察したところ、海洋生物の付着はほとんど観察されなかったが、エポキシ樹脂 塗布膜および純銅溶射被膜の破損が激しく、補修が必要であったが、干潮時水位 よりも0.5m下部の鋼管杭表面に形成されたエポキシ樹脂塗布膜および純銅溶 射被膜の補修は海中にあるために不可能であった。For comparison, a coated steel pipe pile having a surface coated with an epoxy resin and a sprayed coating of pure copper was prepared, the coated steel pipe pile was driven, and a jetty was newly constructed by the conventional method. However, the epoxy resin coating film and a portion of the pure copper sprayed coating were damaged by the impact during casting. However, when left as it was for 1 year and after 1 year, the state of marine organisms was observed, the marine organisms were hardly observed, but the epoxy resin coating film and the pure copper sprayed coating were severely damaged, requiring repair. However, it was impossible to repair the epoxy resin coating film and pure copper sprayed coating formed on the surface of the steel pipe pile 0.5 m below the low water level because it was in the sea.
【0018】[0018]
上述のように、この考案の防食防汚保護カバーは、 (1) 鉄鋼構造物を水中に構築したのち取付けることができるので、新設の 鉄鋼構造物はもちろんのこと、従来の技術では適用できなかった既設の鉄鋼構造 物の防食防汚ができる。 As described above, the anticorrosion / fouling protection cover of the present invention can be applied to (1) a steel structure constructed in water and then mounted, so that it cannot be applied not only to a newly constructed steel structure but also to the conventional technology. Corrosion and antifouling of existing steel structures can be performed.
【0019】 (2) 従来のように鉄鋼構造物を海中に打設する際に生じる機械的振動や衝 撃によって絶縁性材料のコーティングまたはライニング並びに銅または銅合金金 属層の破損がない。(2) There is no damage to the coating or lining of the insulating material and the copper or copper alloy metal layer due to mechanical vibration or impact generated when the steel structure is driven into the sea as in the past.
【0020】 (3) 取付けおよび取り外しが簡単であるため、絶縁性材料のコーティング またはライニングの破損および銅または銅合金金属層の消耗があっても簡単に補 修することができる、 などの優れた効果を奏するものである。(3) Since it is easy to install and remove, it is excellent in that it can be easily repaired even if the coating or lining of the insulating material is damaged and the copper or copper alloy metal layer is consumed. It is effective.
【図1】この考案の防食防汚保護カバーの斜視図であ
る。FIG. 1 is a perspective view of an anticorrosion / fouling protection cover of the present invention.
【図2】図1の防食防汚保護カバーを鋼管杭に取付けた
状態を示す斜視図である。FIG. 2 is a perspective view showing a state in which the anticorrosion / fouling protection cover of FIG. 1 is attached to a steel pipe pile.
【図3】この考案の防食防汚保護カバーのプラスチック
成形物の外面に金属層が剥離しないように被覆した状態
を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which a metal layer is coated on the outer surface of a plastic molded article of the anticorrosion / fouling protection cover of the present invention so as not to peel off.
【図4】この考案の防食防汚保護カバーのプラスチック
成形物の外面に金属層が剥離しないように被覆した状態
を示す断面図である。FIG. 4 is a cross-sectional view showing a state in which a metal layer is coated on the outer surface of a plastic molded article of the anticorrosion / fouling protection cover of the present invention so as not to peel off.
【図5】この考案の別の防食防汚保護カバーの斜視図で
ある。FIG. 5 is a perspective view of another anticorrosion / fouling protection cover of the present invention.
【図6】図5の防食防汚保護カバーを鋼管杭に取付けた
状態を示す断面図である。FIG. 6 is a cross-sectional view showing a state in which the anticorrosion / fouling protection cover of FIG. 5 is attached to a steel pipe pile.
1 防食防汚保護カバー 1′ 防食防汚保護カバー 2 プラスチック成形物 2′ プラスチック成形物 3 金属層 4 フランジ部 5 鋼管杭 6 ボルト 7 防食材 8 凹部 9 凸部 10 金属ワイヤ 1 Anticorrosion and Antifouling Protective Cover 1'Corrosion and Antifouling Protective Cover 2 Plastic Molded Product 2'Plastic Molded Product 3 Metal Layer 4 Flange 5 Steel Pipe Piles 6 Bolts 7 Anticorrosion 8 Recesses 9 Convex 10 Metal Wire
Claims (1)
鋼構造物の外面と類似の内面形状を有するプラスチック
成形物の外面に銅または銅合金よりなる金属層を設けた
ことを特徴とする鉄鋼構造物の防食防汚用保護カバー。1. A steel structure characterized in that a metal layer made of copper or a copper alloy is provided on the outer surface of a plastic molded product having an inner surface shape similar to the outer surface of a steel structure constructed from underwater to above the water surface. Protective cover for anticorrosion and antifouling.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6103893U JPH0725047U (en) | 1993-10-18 | 1993-10-18 | Protective cover for anticorrosion and antifouling of steel structures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6103893U JPH0725047U (en) | 1993-10-18 | 1993-10-18 | Protective cover for anticorrosion and antifouling of steel structures |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0725047U true JPH0725047U (en) | 1995-05-12 |
Family
ID=13159703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6103893U Pending JPH0725047U (en) | 1993-10-18 | 1993-10-18 | Protective cover for anticorrosion and antifouling of steel structures |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0725047U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015094458A (en) * | 2013-11-14 | 2015-05-18 | 中国電力株式会社 | Reinforcement tool for pipeline |
JP2015094457A (en) * | 2013-11-14 | 2015-05-18 | 中国電力株式会社 | Reinforcement tool for pipeline |
CN108237860A (en) * | 2018-02-05 | 2018-07-03 | 芜湖安博帝特工业有限公司 | A kind of modified spring holder and its production method |
-
1993
- 1993-10-18 JP JP6103893U patent/JPH0725047U/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015094458A (en) * | 2013-11-14 | 2015-05-18 | 中国電力株式会社 | Reinforcement tool for pipeline |
JP2015094457A (en) * | 2013-11-14 | 2015-05-18 | 中国電力株式会社 | Reinforcement tool for pipeline |
CN108237860A (en) * | 2018-02-05 | 2018-07-03 | 芜湖安博帝特工业有限公司 | A kind of modified spring holder and its production method |
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