JPH0352831Y2 - - Google Patents
Info
- Publication number
- JPH0352831Y2 JPH0352831Y2 JP1984101459U JP10145984U JPH0352831Y2 JP H0352831 Y2 JPH0352831 Y2 JP H0352831Y2 JP 1984101459 U JP1984101459 U JP 1984101459U JP 10145984 U JP10145984 U JP 10145984U JP H0352831 Y2 JPH0352831 Y2 JP H0352831Y2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- corrosion
- steel pipe
- halves
- edges
- 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
- 238000005260 corrosion Methods 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 230000007797 corrosion Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 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】
〔考案の利用分野〕
本考案は、桟橋支柱等の既設鋼管を被覆防食す
るのに用いられる割型防食カバーの連結構造に関
する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a connection structure for a split anti-corrosion cover used to coat and protect existing steel pipes such as pier supports.
港湾等に見られる桟橋支柱等の鋼管は、その干
満域及び飛沫域がマクロ電池の作用によつて集中
的に腐食することが知られている。この腐食を防
止するため、従来からF・R・P等の耐食性カバ
ーにて鋼管を被覆し、鋼管とカバーとの間にモル
タルやコンクリートの充填材を注入固化させるこ
とが行なわれている。
It is known that steel pipes such as pier supports found in ports and harbors are subject to intensive corrosion in their tidal and splash areas due to the action of macro batteries. In order to prevent this corrosion, a conventional practice has been to cover the steel pipe with a corrosion-resistant cover such as F.R.P., and to inject and harden a filling material such as mortar or concrete between the steel pipe and the cover.
ところが既設の鋼管の場合には、上方へコンク
リートが構築されているので円筒形カバーを鋼管
へ挿通することができない。このため、カバーを
一対の半体に分割して各端縁に長手方向に延びる
フランジを形成し、鋼管の外側から各カバー半体
を対向してフランジ同士を連結している。 However, in the case of an existing steel pipe, the cylindrical cover cannot be inserted into the steel pipe because concrete is built upward. For this purpose, the cover is divided into a pair of halves, a flange extending in the longitudinal direction is formed on each end edge, and the flanges are connected to each other by facing each cover half from the outside of the steel pipe.
しかし、この種の割型防食カバーはフランジ部
分が外側へ突出するため、漂流物がフランジに衝
突し易くなつて防食カバーを破損させる可能性が
ある。 However, since the flange portion of this type of split anti-corrosion cover protrudes outward, floating objects are likely to collide with the flange, potentially damaging the anti-corrosion cover.
このため、最近ではカバー半体のフランジを排
して、各端縁を重ね合わせて連結したり、あるい
は端縁を衝合した後、バンドや連結金具で固定す
る手段も採用されている。しかし、カバー半体は
寸法や変形が大きいので、この種の構造では連結
作業にかなりの手間を要するのが実情である。ま
た、単に端縁を重ね合わせただけでは、カバーに
厚みがあるから突出部分は残ることになる。 For this reason, recently, methods have been adopted in which the flanges of the cover halves are eliminated and the edges are overlapped and connected, or the edges are abutted and then fixed using a band or a connecting metal fitting. However, since the cover halves are large in size and deformation, the reality is that this type of structure requires a considerable amount of effort to connect. Furthermore, if the edges are simply overlapped, a protruding portion will remain because the cover is thick.
この他、各カバー半体の一端縁を丁番にて連結
し、他方の端縁を開いて鋼管に取付ける手段も試
みられているが、この構造では防食カバー底部の
シールが極めて難しくなり、後処理が必要となつ
てくる。 In addition, attempts have been made to connect one end of each cover half with a hinge and open the other end to attach it to a steel pipe, but this structure makes it extremely difficult to seal the bottom of the anti-corrosion cover. Processing becomes necessary.
本考案はかかる実情に鑑みてなされたものであ
り、その目的は、カバー半体を鋼管へ取付けた際
に外部へ突出部分が全く生ずることがなく、しか
もカバー半体の量産及び取付け作業の容易な割型
防食カバーの連結構造を提供することにある。
The present invention was developed in view of the above circumstances, and its purpose is to eliminate any protrusion to the outside when the cover half is attached to the steel pipe, and to facilitate the mass production and installation of the cover half. The object of the present invention is to provide a connection structure for split-type anti-corrosion covers.
上記目的を達成するため、本考案では、カバー
半体の連結端縁の一方に厚肉部分と他方の端縁を
受容する切欠きを設け、両端縁を重ね合わせた状
態で同一円周状となるように形成し、更に各カバ
ー半体を同一形状にしている。
In order to achieve the above object, in the present invention, one of the connecting edges of the cover halves is provided with a thick portion and a notch that receives the other edge, so that when both edges are overlapped, the same circumferential shape is formed. Furthermore, each cover half has the same shape.
第1図には、本考案の連結構造が適用された防
食カバー10が示されている。
FIG. 1 shows a corrosion protection cover 10 to which the connection structure of the present invention is applied.
この防食カバー10は、F・R・P等の耐食性
材料にて形成され、第2図から判るように全く同
一形状のカバー半体10a,10bを対向状態で
鋼管12へ取付けられる。各カバー半体10a,
10bの縦方向寸法は、鋼管12の干満域及び飛
沫域を被覆し得る程度とする。 The anti-corrosion cover 10 is made of a corrosion-resistant material such as F.R.P, etc., and is attached to the steel pipe 12 with cover halves 10a and 10b having exactly the same shape facing each other as shown in FIG. Each cover half 10a,
The vertical dimension of the steel pipe 10b is such that it can cover the ebb and flow area and the splash area of the steel pipe 12.
カバー半体10aの一方の端縁14a(図中右
側)は、第2図及び第3図から分かるように他の
部分よりも厚肉で外側に切欠き16が形成され、
カバー半体10bがこの切欠き16へ重ね合わせ
た状態で嵌合している。切欠き16の深さ寸法
は、カバー半体10bの肉厚とほぼ同じにして半
体10a,10bを重ねた際に同一円周となるよ
うに形成する。 As can be seen from FIGS. 2 and 3, one end edge 14a (right side in the figure) of the cover half 10a is thicker than other parts and has a notch 16 formed on the outside.
The cover half 10b is fitted into this notch 16 in an overlapping state. The depth of the notch 16 is approximately the same as the wall thickness of the cover half 10b, so that the half bodies 10a and 10b have the same circumference when stacked.
この構成によつて防食カバー10は突出部分が
なくなると共に、カバー半体10a,10bは同
一形状であるから予め工場で大量生産することが
できる。 With this configuration, the anticorrosive cover 10 has no protruding portion, and since the cover halves 10a and 10b have the same shape, they can be mass-produced in advance at a factory.
カバー半体10aの端縁14aには、ワツシヤ
18を介してブシユ20が螺合し、その先端は外
方へ突出している。また、ブシユ20には雌ねじ
孔22が貫通して形成されている。これらのブシ
ユ20及びワツシヤ18は、予めカバー半体10
aの端縁長手方向に所定間隔をおいて複数固着さ
れている。従つて、カバー半体10bをゴムシー
ル24を介して切欠き16へ嵌合させれば、両カ
バー半体10a,10bは自動的に位置決めされ
ることとなる。あとは外部から耐食性のボルト2
6を各ブシユ20の雌ねじ孔22へ螺合させ、第
1図からも判るようにカバー半体10a,10b
を一体化する。 A bushing 20 is screwed onto the edge 14a of the cover half 10a via a washer 18, and its tip protrudes outward. Further, a female threaded hole 22 is formed through the bushing 20. These bushings 20 and washers 18 are attached to the cover half 10 in advance.
A plurality of them are fixed at predetermined intervals in the longitudinal direction of the edge of a. Therefore, when the cover half 10b is fitted into the notch 16 via the rubber seal 24, the cover halves 10a and 10b are automatically positioned. All that is left is to install corrosion-resistant bolts 2 from the outside.
6 into the female threaded hole 22 of each bushing 20, and as can be seen from FIG.
to integrate.
防食カバー10の上方は、第4図及び第5図に
示すように吊り金具30によつて鋼管12へ取付
けられている。吊り金具30は、断面がL字形で
その基端側が溶接等の手段によつて鋼管12へ固
着され、またその内側には2個のナツト32が設
けられている。従つて、防食カバー10をクレー
ン等にて支持しながらカバー上端を吊り金具30
へ対応させ、外側からボルト34にて前記ナツト
32へ螺合させれば、防食カバー10は鋼管12
の所定位置へ固定される。 The upper part of the anti-corrosion cover 10 is attached to the steel pipe 12 by a hanging fitting 30, as shown in FIGS. 4 and 5. The hanging fitting 30 has an L-shaped cross section, and its base end is fixed to the steel pipe 12 by means such as welding, and two nuts 32 are provided inside the hanging fitting 30. Therefore, while the anti-corrosion cover 10 is supported by a crane or the like, the upper end of the cover is hung by the hanging fitting 30.
If the anti-corrosion cover 10 is made to correspond to the steel pipe 12 and screwed onto the nut 32 from the outside with the bolt 34,
is fixed in place.
尚、吊り金具30は防食カバー10の上端より
も上方へ突出するように構成すると、カバー取付
け作業が容易になる。ナツト32は予め吊り金具
30へ固着されているので、作業員は外側からの
ボルト挿入だけで済む利点がある。各ボルト34
の頭部は、前述と同様に被覆防食処理を行なうの
が望ましい。 It should be noted that if the hanging fitting 30 is configured to protrude upward from the upper end of the anti-corrosion cover 10, the cover attachment work will be facilitated. Since the nut 32 is fixed to the hanging fitting 30 in advance, there is an advantage that the worker only has to insert the bolt from the outside. Each bolt 34
It is desirable that the head of the head be coated with anti-corrosion treatment in the same manner as described above.
防食カバー10の下端内周には、第6図に示す
ようにシール36がリベツト38によつて固着さ
れている。このシール36は、各カバー半体10
a,10bの底部へ半円状に設けられ、両半体が
円筒の防食カバー10に組付けられると、鋼管1
2の周囲を環状に密封するようになつている。 A seal 36 is fixed to the inner periphery of the lower end of the anti-corrosion cover 10 by a rivet 38, as shown in FIG. This seal 36 is attached to each cover half 10.
a, 10b in a semicircular shape, and when both halves are assembled to the cylindrical anti-corrosion cover 10, the steel pipe 1
2 is sealed in an annular manner.
防食カバー10の内面には、第1図から判るよ
うに複数のスペーサ40が所定間隔をおいて設け
られ、これらのスペーサ40は防食カバー10と
鋼管12との間隔を均等に維持する役割を果た
す。スペーサ40の形状、取付け手段は周知であ
るため、その詳細は省略する。 As can be seen from FIG. 1, a plurality of spacers 40 are provided at predetermined intervals on the inner surface of the anti-corrosion cover 10, and these spacers 40 serve to maintain an even distance between the anti-corrosion cover 10 and the steel pipe 12. . Since the shape and attachment means of the spacer 40 are well known, their details will be omitted.
以上のように鋼管12へ防食カバー10が取付
けられたら、防食カバー10と鋼管12間へ上方
からモルタル等の充填剤42を注入して固化させ
る。カバー底部のシール36(第6図)は充填材
42の自重によつて鋼管12側へ密着するから、
充填材42が下方から洩れ出すことはない。 After the anti-corrosion cover 10 is attached to the steel pipe 12 as described above, a filler 42 such as mortar is injected from above between the anti-corrosion cover 10 and the steel pipe 12 and solidified. The seal 36 (Fig. 6) at the bottom of the cover adheres to the steel pipe 12 side due to the weight of the filler 42, so
The filling material 42 will not leak out from below.
叙上の如く、本考案では、カバー半体の一端縁
に厚肉部分及び切欠きを設けて他方のカバー半体
端縁を受容できるようになすと共に、両カバー半
体を同一形状に構成したから、防食カバーの外方
突出部がなくなると共に大量生産を行なえる効果
がある。
As mentioned above, in the present invention, one end edge of the cover half is provided with a thick walled portion and a notch so that the end edge of the other cover half can be received, and both cover halves are configured to have the same shape. This eliminates the need for an outwardly protruding portion of the anti-corrosion cover and allows for mass production.
第1図は本考案が適用された防食カバーの全体
を示す一部縦断面図、第2図は平面図、第3図は
カバー半体連結部分の拡大断面図、第4図は防食
カバーの上方支持状態を示す縦断面図、第5図は
第4図−線に沿う断面図、第6図は防食カバ
ー底部のシール状態を示す縦断面図である。
10……防食カバー、10a,10b……カバ
ー半体、12……鋼管、14a,14b……端
縁、16……切欠き、20……ブシユ、26……
ボルト、30……吊り金具、36……シール、4
2……充填材。
Fig. 1 is a partial vertical cross-sectional view showing the entire anti-corrosion cover to which the present invention is applied, Fig. 2 is a plan view, Fig. 3 is an enlarged sectional view of the connecting portion of the cover halves, and Fig. 4 is a cross-sectional view of the anti-corrosion cover. FIG. 5 is a cross-sectional view taken along the line of FIG. 4, and FIG. 6 is a vertical cross-sectional view showing the bottom of the anticorrosion cover in a sealed state. 10... Anti-corrosion cover, 10a, 10b... Half cover, 12... Steel pipe, 14a, 14b... Edge, 16... Notch, 20... Bush, 26...
Bolt, 30... Hanging bracket, 36... Seal, 4
2...Filling material.
Claims (1)
るのに用いられ一対のカバー半体から構成される
割型防食カバーの連結構造であつて、前記各カバ
ー半体の連結端縁の一方に、厚肉部分と他方の端
縁を受容する切欠きを設け、両端縁を重ね合わせ
た状態で同一円周状となるように形成し、更に各
カバー半体を同一形状としたことを特徴とする割
型防食カバーの連結構造。 A connecting structure of a split anti-corrosion cover consisting of a pair of cover halves, which is used to cover the ebb and flow area and splash area of an existing steel pipe from the outside, wherein one of the connecting edges of each of the cover halves, A notch is provided to receive the thick portion and the other edge, and both edges are overlapped to form the same circumference, and each cover half has the same shape. Connection structure of split anti-corrosion cover.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10145984U JPS6119052U (en) | 1984-07-05 | 1984-07-05 | Connection structure of split anti-corrosion cover |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10145984U JPS6119052U (en) | 1984-07-05 | 1984-07-05 | Connection structure of split anti-corrosion cover |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6119052U JPS6119052U (en) | 1986-02-04 |
JPH0352831Y2 true JPH0352831Y2 (en) | 1991-11-18 |
Family
ID=30660895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10145984U Granted JPS6119052U (en) | 1984-07-05 | 1984-07-05 | Connection structure of split anti-corrosion cover |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6119052U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006132114A (en) * | 2004-11-02 | 2006-05-25 | Nakabohtec Corrosion Protecting Co Ltd | Method of preventing corrosion of article subject to corrosion prevention |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5826125A (en) * | 1981-08-07 | 1983-02-16 | Daito Kogyo Kk | Corrosion prevention work for steel pipe strut |
-
1984
- 1984-07-05 JP JP10145984U patent/JPS6119052U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5826125A (en) * | 1981-08-07 | 1983-02-16 | Daito Kogyo Kk | Corrosion prevention work for steel pipe strut |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006132114A (en) * | 2004-11-02 | 2006-05-25 | Nakabohtec Corrosion Protecting Co Ltd | Method of preventing corrosion of article subject to corrosion prevention |
Also Published As
Publication number | Publication date |
---|---|
JPS6119052U (en) | 1986-02-04 |
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