JPS62185924A - Corrosion-proofing method for steel tubular pile - Google Patents
Corrosion-proofing method for steel tubular pileInfo
- Publication number
- JPS62185924A JPS62185924A JP2746186A JP2746186A JPS62185924A JP S62185924 A JPS62185924 A JP S62185924A JP 2746186 A JP2746186 A JP 2746186A JP 2746186 A JP2746186 A JP 2746186A JP S62185924 A JPS62185924 A JP S62185924A
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- steel pipe
- resistant
- water
- pile
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000007797 corrosion Effects 0.000 claims description 51
- 238000005260 corrosion Methods 0.000 claims description 51
- 230000000694 effects Effects 0.000 abstract description 5
- 229920001971 elastomer Polymers 0.000 abstract description 5
- 239000005060 rubber Substances 0.000 abstract description 5
- 238000012856 packing Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000003973 paint Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 229910052905 tridymite Inorganic materials 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
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、各種水上ないし海上構築物（桟橋や石油掘削
ステーション、海底地質調査ステーション等）を支持す
る鋼管杭の防蝕方法に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for preventing corrosion of steel pipe piles that support various floating or offshore structures (piers, oil drilling stations, submarine geological survey stations, etc.).
（ロ）従来の技術
従来、かかる水上ないし海上構築物の鋼管杭を腐食から
保護する方法としては、■鋼管杭を水底ないし海底基盤
に打ち込む前に防蝕材料を鋼管杭の表面に塗布する方法
と、■鋼管杭を打ち込んだ後、潜水夫によって鋼管杭に
直接水に熔けない防蝕材料を塗布する方法が知られてい
る。(B) Conventional technology Conventionally, methods for protecting steel pipe piles of such floating or offshore structures from corrosion include: - applying a corrosion-resistant material to the surface of the steel pipe pile before driving it into the underwater bed or submarine foundation; ■A method is known in which, after driving the steel pipe pile, a diver directly applies a corrosion-resistant material that does not dissolve in water to the steel pipe pile.
（ハ）発明が解決しようとする問題点
しかし、前者の方法では、鋼管杭を水底ないし海底に打
ち込むに際して、ハンマーや振動機によって強大な衝撃
や振動が鋼管杭に与えられるので、防水塗膜が剥離する
おそれがあった。他方、後者の方法では、地上での作業
と異なり、水中での作業は、適正な作業姿勢を取ったり
、移動するのが困難であり、そのため、作業能率が悪く
、かつ費用も割高となっていた。(c) Problems to be solved by the invention However, in the former method, when the steel pipe pile is driven into the bottom of the water or the seabed, strong shocks and vibrations are applied to the steel pipe pile by a hammer or a vibrator, so that the waterproof coating cannot be applied. There was a risk of peeling. On the other hand, with the latter method, unlike work on land, it is difficult to take a proper working posture and move when working underwater, which results in poor work efficiency and high costs. Ta.
本発明は、上記問題点を解決することができる鋼管杭の
防蝕方法を堤供することを目的とする。An object of the present invention is to provide a corrosion prevention method for steel pipe piles that can solve the above-mentioned problems.
（ニ）問題点を解決するための手段
本発明は、水中に立設した長尺の鋼管杭が位置する水面
上に足場を構築し、同足場において、水面上に露出して
いる鋼管杭の上部に、複数の短尺の防蝕環状体を順次遊
嵌するとともに、鋼管杭に沿って水中に降下させ、最下
端の防蝕環状体を水底に当接するとともに最上端の防蝕
環状体を水上より露出した長尺の鋼管防蝕筒体を形成し
、同鋼管防蝕筒体と鋼管杭との間に形成される環状空間
に、防蝕材料を充填する、ことを特徴とする鋼管杭の防
蝕工法に係るものである。(d) Means for solving the problem The present invention constructs a scaffold on the water surface where long steel pipe piles erected in the water are located, and in the scaffold, the steel pipe piles exposed above the water surface are A plurality of short corrosion-resistant annular bodies were loosely fitted in sequence on the top, and the structure was lowered into the water along the steel pipe pile, with the lowest corrosion-resistant annular body touching the bottom of the water and the top corrosion-proofing annular body being exposed above the water. This relates to a method for corrosion-protecting steel pipe piles, which is characterized by forming a long steel pipe corrosion-resistant cylinder and filling an annular space formed between the steel pipe corrosion-resistant cylinder and the steel pipe pile with a corrosion-resistant material. be.
（ホ）作用及び効果 上記方法によって、本発明は、以下の効果を奏する。(e) Action and effect By the above method, the present invention has the following effects.
■水上で作業を行うことができるので、作業性を向上で
きる。■Work can be performed on the water, improving work efficiency.
■鋼管杭を水底ないし海底基盤に打ち込んだ後に防蝕筒
体を形成するので、振動や衝撃による剥離等を防止する
ことができる。■Since a corrosion-resistant cylinder is formed after driving the steel pipe pile into the underwater bed or submarine foundation, it is possible to prevent peeling due to vibration or impact.
■鋼管杭を、防蝕筒体及び同筒体と鋼管杭との間に形成
した環状空間に充填した防蝕材料によって二重に防蝕す
るようにしたので、防蝕効果を著しく増大することがで
きる。(2) Since the steel pipe pile is doubly protected from corrosion by a corrosion-resistant cylinder and a corrosion-resistant material filled in the annular space formed between the cylinder and the steel pipe pile, the corrosion-proofing effect can be significantly increased.
（へ）実施例
以下、添付図に示す実施例に基づいて、本発明を詳説す
る。(f) Examples The present invention will now be explained in detail based on examples shown in the accompanying drawings.
まず、第１図に示すように、尖状先端１ａを海底基盤２
に打ち込んでいる鋼管杭１の直上に、足場３を形成する
。なお、かかる足場３は、図示のものに限られるもので
はなく、作業船等によって形成することもできる。First, as shown in FIG.
Scaffolding 3 is formed directly above the steel pipe pile 1 that is being driven in. Note that the scaffold 3 is not limited to the one shown in the drawings, and may also be formed by a work boat or the like.
ついで、足場３の上部機枠４に設けたホイストクレーン
５より４本の吊支ロー１６を引き出し、各ロープ６の下
端を、後述する鋼管防蝕筒体１Ｂの最下部を構成する最
下段の防蝕環状体７の下部に設けたブラケット７Ｃに連
結し、防蝕環状体７を吊支する。Next, the four suspension rows 16 are pulled out from the hoist crane 5 installed on the upper machine frame 4 of the scaffolding 3, and the lower end of each rope 6 is connected to the lowest corrosion-resistant steel pipe that constitutes the lowest part of the steel pipe corrosion-resistant cylinder 1B, which will be described later. It is connected to a bracket 7C provided at the lower part of the annular body 7 to suspend the corrosion-resistant annular body 7.
なお、かかる防蝕環状体７としては、海水に対する耐蝕
性が大きい繊維強化ビニル管（ＦＲＶ）。The corrosion-resistant annular body 7 is a fiber-reinforced vinyl pipe (FRV) that has high corrosion resistance against seawater.
繊維強化プラスチツク管（ＦＲＰ） 、塩化ビニル管（
ＶＣ）やコンクリートヒユーム管等が考えられる。Fiber reinforced plastic pipe (FRP), PVC pipe (
VC), concrete humid pipes, etc.
また、防蝕環状体７は、重量や取り扱い性を考慮して、
短尺なものとする。In addition, the corrosion-resistant annular body 7 is designed in consideration of weight and ease of handling.
It should be short.
ついで、上記防蝕環状体７を鋼管杭１の上端に遊嵌し、
ホイストクレーン５を駆動して鋼管杭１の外周面に沿っ
て防蝕環状体７を下降する。Next, the corrosion-resistant annular body 7 is loosely fitted to the upper end of the steel pipe pile 1,
The hoist crane 5 is driven to lower the corrosion-resistant annular body 7 along the outer peripheral surface of the steel pipe pile 1.
その後、第２段の防蝕環状体７を鋼管杭１の上部に遊嵌
するとともに、その下部フランジ部８を上記最下段の防
蝕環状体７の上部フランジ部９に支持させ、かつ両者を
以下の連結機構Ａによって強固に連結する。Thereafter, the second-stage corrosion-resistant annular body 7 is loosely fitted into the upper part of the steel pipe pile 1, and its lower flange portion 8 is supported by the upper flange portion 9 of the lowest-stage corrosion-resistant annular body 7, and both are connected as follows. It is firmly connected by the connecting mechanism A.
即ち、連結機構Ａは、第２図から第４図に示すように、
防蝕環状体７の下部フランジ部８と上部フランジ部９と
に、それぞれ連結用ボルト孔１０゜１１を設け、かつ両
者の間に連結用ボルト孔１２を有するゴムパツキン１３
を開設し、かつ下部フランジ部８と上部フランジ部９の
外周に広幅の連結用ゴムバンド１４を巻回し、同バンド
１４の周りに固定用環状金具１５を巻回することによっ
て構成している。That is, the connection mechanism A, as shown in FIGS. 2 to 4,
A rubber packing 13 is provided with connecting bolt holes 10 and 11 in the lower flange portion 8 and upper flange portion 9 of the corrosion-resistant annular body 7, respectively, and has a connecting bolt hole 12 between the two.
, a wide connecting rubber band 14 is wound around the outer periphery of the lower flange part 8 and the upper flange part 9, and a fixing annular fitting 15 is wound around the band 14.
また、かかる構成によって、連結用ボルト孔１０゜１１
．１２に連結用ボルト１６を挿通し、ナラ１−１７で締
めっけることにより、防蝕環状体７．７同志を強固に連
結でき、さらに、その連結部間りに連結用ゴムバンド１
４を巻回し、同バンド１４を固定用環状金具１５によっ
て緊締することによって、連結部におけろ水密性を高め
ることができる。Moreover, with this configuration, the connecting bolt hole 10° 11
．． By inserting the connecting bolt 16 into the connecting bolt 12 and tightening it with the nuts 1-17, the corrosion-resistant annular bodies 7 and 7 can be firmly connected to each other.
4 and tightening the band 14 with the fixing annular metal fitting 15, it is possible to improve watertightness at the connecting portion.
以上の要領で、最上段の防蝕環状体７の上端が水面より
上方へ突出するまで、さらに、複数の防蝕環状体７・・
・を順次鋼管杭１の上部に嵌装するとともに、相互に連
結していき、最終的に第５図に示す長尺の鋼管防蝕筒体
１８を、鋼管杭１の外周に構成するとともに、同鋼管防
蝕筒体１８と鋼管杭１との間に環状空間１９を形成する
。In the above manner, a plurality of corrosion-resistant annular bodies 7 are continued until the upper end of the uppermost corrosion-resistant annular body 7 protrudes above the water surface.
are sequentially fitted onto the upper part of the steel pipe pile 1 and connected to each other, and finally the long steel pipe corrosion-resistant cylinder 18 shown in FIG. 5 is constructed on the outer periphery of the steel pipe pile 1, and An annular space 19 is formed between the steel pipe corrosion-resistant cylinder body 18 and the steel pipe pile 1.
なお、かかる環状空間１９の幅を一定にするため、防蝕
環状体７の内部には、第３図に示すようなスペーサー２
０を設けることもできる。In order to keep the width of the annular space 19 constant, a spacer 2 as shown in FIG. 3 is provided inside the corrosion-resistant annular body 7.
0 can also be provided.
しかし、この時点では、いまだ環状空間１９内には海水
が浸入しており、これを外部に排出する必要がある。However, at this point, seawater is still infiltrating the annular space 19, and it is necessary to drain this to the outside.
そこで、第３図に示すように、各防蝕環状体７の内面に
排水兼材料注入ホース用空隙２１を縦長に形成し、同空
隙２１内に排水ホース２２を挿入するとともに、同排水
ホース２２の上端を、第１図に示すように、足場３上に
設置した排水ポンプ２３に連結して環状空間１９内の海
水を外部に排出する。Therefore, as shown in FIG. 3, a vertically elongated gap 21 for a drainage and material injection hose is formed on the inner surface of each corrosion-resistant annular body 7, and a drain hose 22 is inserted into the gap 21. As shown in FIG. 1, the upper end is connected to a drainage pump 23 installed on the scaffold 3 to discharge seawater in the annular space 19 to the outside.
また、排出後、同空隙２１内に、第１図に示すように上
端を材料供給装置２４に連結した材料注入ホース２５を
挿入し、防蝕材料（接着材料）を環状空間１９内に充填
し、固化させる。After the discharge, the material injection hose 25 whose upper end is connected to the material supply device 24 as shown in FIG. Let solidify.
なお、かかる防蝕材料としては、アクリル酸エステルを
主成分としてなる複合ポリマーエマルジョンを、酸化珪
素、酸化カルシウム、酸化鉄を主成分とした主剤または
セメント、砂、砂利を主成分としたコンクリートに混合
して製造したエマルジョン混和コンクリートが考えられ
る。In addition, as such a corrosion-resistant material, a composite polymer emulsion mainly composed of acrylic acid ester is mixed with a base agent mainly composed of silicon oxide, calcium oxide, or iron oxide, or concrete mainly composed of cement, sand, or gravel. Emulsion-mixed concrete manufactured by
ここに複合ポリマーエマルジョンとは、例えば、特願昭
５７−３３４９９号や特願昭５９−９２１１２号におい
て開示したものをいい、かかる複合ポリマーエマルジョ
ンは、例えば、以下の成分構成を有する。Here, the composite polymer emulsion refers to, for example, those disclosed in Japanese Patent Application No. 57-33499 and Japanese Patent Application No. 59-92112, and such a composite polymer emulsion has, for example, the following component composition.
カルボキシ変性スチレンブタジェン ４５χメタクリ
ル酸シクロヘキシル ２４χメタノール
５χ脂肪酸ソ一ダ石鹸
ｌχ水
２５χまた、主剤は、周知のコンクリート
やモルタルの他、以下の成分構成を有するものとするこ
とができる。Carboxy-modified styrene butadiene 45χ cyclohexyl methacrylate 24χ methanol
5χ fatty acid soda soap
lχ water
25χ In addition to well-known concrete and mortar, the base agent may have the following component structure.
白色セメント ２８．０χ硅砂
（ＳｉＯ２） ７１．６χ鉄
粉（Ｆｅ ３０４ ） ０．２χ
亜鉛華（ＺｎＯ） ０．１！
チタン白（Ｔｉ０２） ０．Ｉ
Ｘなお、かかる複合材料における複合ポリマーエマルジ
ョンと主剤の配合比は１：３〜５とするのが好ましい。White cement 28.0χ Silica sand (SiO2) 71.6χ Iron powder (Fe 304 ) 0.2χ
Zinc white (ZnO) 0.1!
Titanium white (Ti02) 0. I
Note that the blending ratio of the composite polymer emulsion and the main ingredient in such a composite material is preferably 1:3 to 5.
以上の方法において、鋼管杭１は、鋼管防蝕筒体１８と
、環状空間に充填された防蝕材料によって二重にわたっ
て防蝕効果が図れるので、鋼管杭１の腐食を確実に防止
できる。In the above method, the steel pipe pile 1 has a double corrosion-proofing effect due to the steel pipe corrosion-proof cylinder 18 and the corrosion-proof material filled in the annular space, so that corrosion of the steel pipe pile 1 can be reliably prevented.
また、本発明に係る鋼管杭の防蝕方法に用いることがで
きる防蝕環状体７の形態として、第６図に示すように、
最下段の防蝕環状体７の下部フランジ部８に緊締鋼製ベ
ル１−３０によってゴム等の高伸縮製材料からなる可撓
性環状体３１の上端を連結し、その下端を鋼管杭１の外
周に伸延させた構成とすることもできる。Further, as shown in FIG. 6, as a form of the corrosion-resistant annular body 7 that can be used in the corrosion-protection method for steel pipe piles according to the present invention,
The upper end of a flexible annular body 31 made of a highly elastic material such as rubber is connected to the lower flange portion 8 of the corrosion-resistant annular body 7 at the lowest stage by a tightening steel bell 1-30, and the lower end is connected to the outer periphery of the steel pipe pile 1. It is also possible to have a configuration in which it is extended.
そして、かかる構成によって、鋼管杭１と鋼管防蝕筒体
１８との間の環状空間１９に排水時に発生する圧力差（
水圧）を利用して鋼管杭１の表面に可撓性環状体３１を
密着させることができ、環状空間１９の水密性を高め、
防蝕材料の充填、固化を容易にすることができる。With this configuration, the pressure difference (
The flexible annular body 31 can be brought into close contact with the surface of the steel pipe pile 1 using water pressure), increasing the watertightness of the annular space 19,
Filling and solidification of corrosion-resistant materials can be facilitated.
さらに、防蝕環状体７は、第７図及び第８図に示すよう
に、二つの半割体７ａ、７ｂとからなる分割体とするこ
ともでき、縦フランジ４０．４１に設けた連結用ポルト
孔４２に連結用ボルト４３を挿通し、パツキン４５を介
してナツト４４とともに緊締することによって、鋼管杭
１周りに取付けることができ、取付の容易化を図ること
ができる。Furthermore, as shown in FIGS. 7 and 8, the corrosion-resistant annular body 7 can also be made into a divided body consisting of two halves 7a and 7b, and a connecting port provided on the vertical flange 40.41. By inserting the connecting bolt 43 into the hole 42 and tightening it together with the nut 44 through the packing 45, it can be attached around the steel pipe pile 1, making the attachment easier.
なお、防蝕環状体７同志の連結は、第２図〜第４図にお
いて示した実施例と同様にして行うことができる。Note that the corrosion-resistant annular bodies 7 can be connected together in the same manner as in the embodiments shown in FIGS. 2 to 4.
また、この場合は、工事終了後に、防蝕環状体７が、何
らかの理由で損壊した場合、潜水夫によって交換補修す
ることができる。Further, in this case, if the corrosion-resistant annular body 7 is damaged for some reason after the completion of the construction work, it can be replaced and repaired by a diver.
第１図は本発明に係る鋼管杭の防蝕方法に用いる足場構
成の全体説明図、第２図は防蝕環状体の連結部の分解斜
視図、第３図は第２図Ｉ−１線による断面図、第４図は
同連結部の連結状態説明図、第５図は本発明に係る防蝕
工法が施された鋼管杭の斜視図、第６図は同鋼管杭の先
端部説明図、第７図は二分割体からなる防蝕環状体の分
解斜視図、第８図は同防蝕環状体の一体化後の斜視図で
ある。
図中、
（１）：鋼管杭
（３）二足場
（７）：防蝕環状体
（１８） ：鋼管防蝕筒体
（１９） ：環状空間Fig. 1 is an overall explanatory diagram of the scaffold structure used in the corrosion protection method for steel pipe piles according to the present invention, Fig. 2 is an exploded perspective view of the connecting part of the corrosion-resistant annular body, and Fig. 3 is a cross section taken along line I-1 in Fig. 2. 4 is an explanatory diagram of the connected state of the connecting part, FIG. 5 is a perspective view of a steel pipe pile to which the corrosion prevention method according to the present invention has been applied, FIG. 6 is an explanatory diagram of the tip of the same steel pipe pile, and FIG. The figure is an exploded perspective view of a corrosion-resistant annular body made of two parts, and FIG. 8 is a perspective view of the same corrosion-resistant annular body after being integrated. In the figure, (1): Steel pipe pile (3) Two scaffolds (7): Corrosion-resistant annular body (18): Steel pipe corrosion-resistant cylinder (19): Annular space
Claims (1)
上に足場（３）を構築し、同足場（３）上において、水
面上に露出している鋼管杭（１）の上部に、複数の短尺
の防蝕環状体（７）を順次遊嵌するとともに、鋼管杭（
１）に沿って水中に降下させ、最下端の防蝕環状体（７
）を水底に当接するとともに最上端の防蝕環状体（７）
を水上より露出した長尺の鋼管防蝕筒体（１８）を形成
し、同鋼管防蝕筒体（１８）と鋼管杭（１）との間に形
成される環状空間（１９）に、防蝕材料を充填する、こ
とを特徴とする鋼管杭の防蝕方法。1. Build a scaffold (3) on the water surface where the long steel pipe pile (1) erected in the water is located, and on the scaffold (3), install the steel pipe pile (1) exposed above the water surface. A plurality of short corrosion-resistant annular bodies (7) are loosely fitted in sequence into the upper part, and steel pipe piles (
1) into the water, and remove the corrosion-resistant annular body (7) at the lowest end.
) in contact with the bottom of the water, and the corrosion-resistant annular body (7) at the top end.
A long steel pipe corrosion-resistant cylinder (18) is formed which is exposed above the water, and a corrosion-resistant material is applied to the annular space (19) formed between the steel pipe corrosion-resistant cylinder (18) and the steel pipe pile (1). A method for preventing corrosion of steel pipe piles, characterized by filling the piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2746186A JPS62185924A (en) | 1986-02-10 | 1986-02-10 | Corrosion-proofing method for steel tubular pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2746186A JPS62185924A (en) | 1986-02-10 | 1986-02-10 | Corrosion-proofing method for steel tubular pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62185924A true JPS62185924A (en) | 1987-08-14 |
Family
ID=12221754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2746186A Pending JPS62185924A (en) | 1986-02-10 | 1986-02-10 | Corrosion-proofing method for steel tubular pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62185924A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9732835B2 (en) | 2013-07-11 | 2017-08-15 | Exedy Corporation | Lockup device for torque converter |
| US9784352B2 (en) | 2013-06-04 | 2017-10-10 | Exedy Corporation | Lock-up device for torque converter |
| US10030740B2 (en) | 2013-06-04 | 2018-07-24 | Exedy Corporation | Lock-up device for torque converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6110635A (en) * | 1984-06-23 | 1986-01-18 | Ishikawajima Constr Material Co Ltd | Method of preventing corrosion of steel pipe pile |
-
1986
- 1986-02-10 JP JP2746186A patent/JPS62185924A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6110635A (en) * | 1984-06-23 | 1986-01-18 | Ishikawajima Constr Material Co Ltd | Method of preventing corrosion of steel pipe pile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9784352B2 (en) | 2013-06-04 | 2017-10-10 | Exedy Corporation | Lock-up device for torque converter |
| US10030740B2 (en) | 2013-06-04 | 2018-07-24 | Exedy Corporation | Lock-up device for torque converter |
| US9732835B2 (en) | 2013-07-11 | 2017-08-15 | Exedy Corporation | Lockup device for torque converter |
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