JPH0213560Y2 - - Google Patents
Info
- Publication number
- JPH0213560Y2 JPH0213560Y2 JP13411185U JP13411185U JPH0213560Y2 JP H0213560 Y2 JPH0213560 Y2 JP H0213560Y2 JP 13411185 U JP13411185 U JP 13411185U JP 13411185 U JP13411185 U JP 13411185U JP H0213560 Y2 JPH0213560 Y2 JP H0213560Y2
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- titanium
- flange
- layer
- insulating
- 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.)
- Expired
Links
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 26
- 239000010936 titanium Substances 0.000 claims description 26
- 238000005260 corrosion Methods 0.000 claims description 25
- 229910052719 titanium Inorganic materials 0.000 claims description 24
- 230000007797 corrosion Effects 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 239000004264 Petrolatum Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229940066842 petrolatum Drugs 0.000 description 3
- 235000019271 petrolatum Nutrition 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229940038692 petrolatum paste Drugs 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は既設海洋鋼構造物の防食カバーに関す
る。[Detailed description of the invention] (Industrial application field) The present invention relates to a corrosion protection cover for an existing marine steel structure.
（従来の技術）
よく知られているように海洋環境、特に飛沫帯
及び干満帯附近における鋼材の腐食は激しく、し
ばしば海洋鋼構造物の耐用年数を短かくする原因
となつている。そのため新設の海洋鋼構造物は厚
膜型の特殊塗装、有機樹脂のライニング及び耐食
金属のクラツデイング等が行われるのが一般化し
ている。(Prior Art) As is well known, the corrosion of steel materials in the marine environment, particularly near the splash zone and tidal zone, is severe and often causes the service life of marine steel structures to be shortened. For this reason, newly constructed marine steel structures are generally coated with thick-film special coatings, organic resin linings, and corrosion-resistant metal cladding.
本考案者らの一部は、さきに特開昭58−29916
号公報において、最下層として主として防食作用
を行なう防食層、中間層として衝撃に耐えるため
の緩衝層、最外層として強化プラスチツクス或い
は耐食性金属からなる板状或いはシート状の保護
カバーの三層構造を有する一体成型防食体を、あ
らかじめ作業性良好な重量および大きさに成型加
工して用いる海洋鋼構造物の防食施工方法を提起
した。 Some of the inventors of this invention previously published Japanese Patent Application Publication No. 58-29916.
In the publication, a three-layer structure is described: an anti-corrosion layer as the bottom layer, which mainly acts as an anti-corrosion layer, a buffer layer to withstand impact as the middle layer, and a plate-like or sheet-like protective cover made of reinforced plastics or corrosion-resistant metal as the outermost layer. We proposed a corrosion protection construction method for marine steel structures that uses an integrally molded anticorrosion body that is molded in advance to a weight and size that is easy to work with.
即ち第２図に示すように、コンクリート製の海
上桟橋１は鋼管製柱状体の支柱２で支承されてい
る。３は支柱２における飛沫帯に設けられる防食
被覆体である。第３図は二分割した一体成型防食
被覆体の一例であるが、ペトロラタム系防食剤含
浸層６＋発泡ポリエチレン緩衝層５＋ガラス繊維
強化プラスチツク保護層４を素地調整した鋼管杭
１０にボルト−ナツト８で取り付ける。７はフラ
ンジである。 That is, as shown in FIG. 2, a concrete marine pier 1 is supported by columns 2 made of steel pipes. 3 is an anti-corrosion coating provided in the splash zone of the support column 2. Figure 3 shows an example of an integrally molded anti-corrosion coating divided into two parts, in which a layer 6 impregnated with a petrolatum-based anti-corrosion agent + a foamed polyethylene buffer layer 5 + a protective layer 4 of glass fiber reinforced plastic are attached to a steel pipe pile 10 whose substrate has been prepared using bolts and nuts 8. Attach. 7 is a flange.
ところでガラス繊維強化プラスチツク保護層に
替えて、チタン、チタン合金が用いられるときは
ボルトナツトとチタン材とが直接接触することと
なり、電気化学反応が促進されて腐食が進行し、
好ましくない。 By the way, when titanium or titanium alloy is used instead of the glass fiber reinforced plastic protective layer, the bolt and nut come into direct contact with the titanium material, accelerating electrochemical reactions and progressing corrosion.
Undesirable.
（考案が解決しようとする問題点）
本考案は既設杭の飛沫帯に設ける防食被覆体
を、長年に亘り保護する着脱自在なチタン防食カ
バーを提供するものである。(Problems to be Solved by the Invention) The present invention provides a removable titanium anti-corrosion cover that protects the anti-corrosion cover provided in the splash zone of an existing pile for many years.
（問題点を解決するための手段） 本考案の一例を第１図について説明する。(Means for solving problems) An example of the present invention will be explained with reference to FIG.
図において、５は発泡ポリエチレン緩衝層であ
り、例えば第３図に示すペテロラタム系防食剤含
浸層６の上層である。緩衝層５はチタン防食カバ
ー本体４で保護されるが、カバー本体４はシート
状で所望の巾と長さを与えられている。カバー本
体４はフランジ７，７が形成されて、フランジ
７，７の間には、止水材１１が介装されている。
止水材１１は発泡クツシヨン材であり、発泡ポリ
エチレンなどの弾性を有するシート状物質が用い
られる。 In the figure, 5 is a foamed polyethylene buffer layer, which is, for example, the upper layer of the petrolatum-based anticorrosive agent-impregnated layer 6 shown in FIG. The buffer layer 5 is protected by a titanium anti-corrosion cover body 4, which is in the form of a sheet and has a desired width and length. The cover main body 4 is formed with flanges 7, 7, and a water stop material 11 is interposed between the flanges 7, 7.
The water stop material 11 is a foamed cushion material, and a sheet-like material having elasticity such as foamed polyethylene is used.
本考案の防食カバーは、Ｌ型絶縁性フランジ２
０がフランジ７，７に当接され例えばステンレス
鋼製のボルト８、ナツト９によつて緊締される。
ボルト孔には好ましくは絶縁キヤツプ１２，１２
を併用する。 The anti-corrosion cover of the present invention has an L-shaped insulating flange 2
0 is brought into contact with the flanges 7, 7 and tightened with bolts 8 and nuts 9 made of stainless steel, for example.
The bolt holes are preferably provided with insulating caps 12, 12.
Use together.
この絶縁キヤツプ１２は、Ｌ型フランジ２０、
チタンフランジ７を貫通して、止水材１１に接触
する程度の長さの筒状のものが望ましく、このよ
うな絶縁キヤツプ１２，１２を、左右のフランジ
部に併用することにより、チタンシートカバー本
体４と、ボルト８が完全に絶縁され、チタンとス
テンレス鋼との接触による腐食が防止される。 This insulating cap 12 has an L-shaped flange 20,
A cylindrical cap long enough to penetrate the titanium flange 7 and come into contact with the water stop material 11 is preferable, and by using such insulating caps 12, 12 together on the left and right flanges, the titanium seat cover The main body 4 and the bolt 8 are completely insulated to prevent corrosion due to contact between titanium and stainless steel.
なお絶縁キヤツプ１２，１２の材料としては、
硬質ビニールなどのプラスチツクや絶縁性セラミ
ツクなどが適当であり、ボルト８の外径に応じ
て、適当な内径を有する筒状のものを用いれば良
い。 The materials for the insulating caps 12, 12 are as follows:
Plastic such as hard vinyl or insulating ceramic is suitable, and a cylindrical material having an appropriate inner diameter depending on the outer diameter of the bolt 8 may be used.
また、例えば第１図ｂに示すように、チタンフ
ランジ７，７と止水材１１との間に、ペトロラタ
ムペーストやアスフアルト系などの防錆剤を、す
き間充填剤１３として塗布し、すき間を埋めるこ
とによつて、チタンやステンレス鋼のいわゆるす
き間腐食の危険性を防止すれば、一段と優れた効
果が得られる。 Further, as shown in FIG. 1b, for example, a rust preventive agent such as petrolatum paste or asphalt is applied as a gap filler 13 between the titanium flanges 7, 7 and the water stop material 11 to fill the gap. In particular, if the risk of so-called crevice corrosion of titanium and stainless steel is prevented, even better effects can be obtained.
更に、同じく第１図ｂに示すように、フランジ
継手部の下部に位置するように、チタンシートカ
バー本体４，４と緩衝層５との間に止水板１４を
設ければ、たとえすき間充填剤１３を省略した場
合でも、防食被覆体３の内部への水の侵入をかな
り有効に阻止することが出来る。 Furthermore, as shown in FIG. 1b, if a water stop plate 14 is provided between the titanium sheet cover bodies 4, 4 and the buffer layer 5 so as to be located at the lower part of the flange joint, even if the gap is filled. Even when the agent 13 is omitted, it is possible to quite effectively prevent water from entering the interior of the anticorrosive coating 3.
この場合、止水板１４としては、チタンシート
カバ本体４，４と同材質のチタン板を用いるか、
又は止水性にすぐれた硬質プラスチツク板などを
使用することが出来る。なおチタン板を使用する
場合には、その一側をチタンシートカバー本体
４，４のいずれか一方に、あらかじめ第１図ｂの
如く、溶接部１５により取り付けておけば、組立
ての際の取り扱いが容易となる。 In this case, as the water stop plate 14, use a titanium plate made of the same material as the titanium sheet cover bodies 4, 4, or
Alternatively, a hard plastic board with excellent water-stopping properties can be used. In addition, when using a titanium plate, if one side of the titanium plate is attached to either of the titanium seat cover bodies 4, 4 using the welded part 15 as shown in Fig. 1b, it will be easier to handle during assembly. It becomes easier.
本考案は防食層６と緩衝材５をチタンカバー本
体４で保護するとともに、フランジ７，７は絶縁
材１１を介装し、又Ｌ型絶縁フランジ２０を、例
えば繊維強化プラスチツクで成形してチタンフラ
ンジ７，７に当接した上でボルト締めするので、
ボルトとチタンフランジとが直接接触することが
ない。 In the present invention, the anti-corrosion layer 6 and the cushioning material 5 are protected by the titanium cover body 4, the flanges 7, 7 are interposed with the insulating material 11, and the L-shaped insulating flange 20 is made of, for example, fiber-reinforced plastic and made of titanium. Since the bolts are tightened after contacting the flanges 7, 7,
There is no direct contact between the bolt and the titanium flange.
即ち、ボルトとチタンフランジとの電気化学的
な接触腐食が防止されるので、チタンの耐久性を
利用した防食性が向上する。絶縁性フランジはＬ
型を図示したが、チタンフランジを補強するもの
であればよい。 That is, since electrochemical contact corrosion between the bolt and the titanium flange is prevented, corrosion resistance utilizing the durability of titanium is improved. Insulating flange is L
Although the type is shown, any type may be used as long as it reinforces the titanium flange.
（考案の効果）
本考案は防食カバーにチタン又はチタン合金を
用い、繊維強化プラスチツクの絶縁フランジをチ
タンフランジに当接するので、耐食性金属のボル
ト、ナツトを用いても接触腐食が防止され、実用
効果は大である。(Effects of the invention) This invention uses titanium or titanium alloy for the anti-corrosion cover and abuts the insulating flange made of fiber-reinforced plastic on the titanium flange, so contact corrosion is prevented even when bolts and nuts made of corrosion-resistant metal are used, resulting in practical effects. is large.
第１図ａ，ｂは本考案の実施の一態様を示す部
分拡大説明図、第２図は従来例の説明図、第３図
は第２図の被覆体の断面構造を示す模式図であ
る。
１……桟橋、２……支柱、３……防食被覆体、
４，４……チタンシートカバー本体、５……緩衝
層、６……ペトロラタム系防食剤含浸層、７，７
……チタンフランジ、８……ボルト、９……ナツ
ト、１１……止水材、１２……絶縁キヤツプ、１
３……すき間充填剤、１４……止水板、１５……
溶接部、２０……絶縁性フランジ。
1A and 1B are partially enlarged explanatory views showing one embodiment of the present invention, FIG. 2 is an explanatory view of a conventional example, and FIG. 3 is a schematic diagram showing the cross-sectional structure of the covering body of FIG. 2. . 1... Pier, 2... Support column, 3... Anti-corrosion coating,
4, 4...Titanium sheet cover body, 5...Buffer layer, 6...Petrolatum anticorrosive agent impregnated layer, 7,7
...Titanium flange, 8...Bolt, 9...Nut, 11...Water stop material, 12...Insulating cap, 1
3... Gap filler, 14... Water stop plate, 15...
Welding part, 20...Insulating flange.
Claims (1)
カバー本体と、該カバー本体の両端にフランジを
形成し、相対するフランジ間に絶縁材を介装し、
前記フランジに絶縁性フランジを当接して、耐食
性金属ボルトで着脱自在にしてなる既設杭の防食
カバー。 A sheet-shaped titanium cover body given a desired width and length, flanges formed at both ends of the cover body, and an insulating material interposed between the opposing flanges,
A corrosion-proof cover for an existing pile, which has an insulating flange in contact with the flange and can be attached and detached using corrosion-resistant metal bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13411185U JPH0213560Y2 (en) | 1985-09-03 | 1985-09-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13411185U JPH0213560Y2 (en) | 1985-09-03 | 1985-09-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6244948U JPS6244948U (en) | 1987-03-18 |
| JPH0213560Y2 true JPH0213560Y2 (en) | 1990-04-13 |
Family
ID=31035046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13411185U Expired JPH0213560Y2 (en) | 1985-09-03 | 1985-09-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0213560Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4614511B2 (en) * | 2000-08-09 | 2011-01-19 | 日鉄防蝕株式会社 | Manufacturing method of high corrosion resistance metal-coated steel pipe |
-
1985
- 1985-09-03 JP JP13411185U patent/JPH0213560Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6244948U (en) | 1987-03-18 |
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