JP2511296B2 - Structure of anticorrosion cover - Google Patents
Structure of anticorrosion coverInfo
- Publication number
- JP2511296B2 JP2511296B2 JP27089588A JP27089588A JP2511296B2 JP 2511296 B2 JP2511296 B2 JP 2511296B2 JP 27089588 A JP27089588 A JP 27089588A JP 27089588 A JP27089588 A JP 27089588A JP 2511296 B2 JP2511296 B2 JP 2511296B2
- Authority
- JP
- Japan
- Prior art keywords
- anticorrosion
- water
- cover
- water swelling
- protective cover
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、水中に打設される鋼管杭または鉄筋コンク
リート杭等の水中構造物の腐蝕を防止するために、該水
中構造物の水と接触する周面に取付けられる防食カバー
に関するものである。Description: TECHNICAL FIELD The present invention relates to a circumference of an underwater structure that comes into contact with water in order to prevent corrosion of an underwater structure such as a steel pipe pile or a reinforced concrete pile that is driven into water. The present invention relates to an anticorrosion cover attached to a surface.
従来技術 港湾等において海底に打設された鋼管杭または鉄筋コ
ンクリート杭等は、その海水と接触する表面が海水によ
り腐蝕し易い。2. Description of the Related Art Steel pipe piles or reinforced concrete piles placed on the seabed in a harbor or the like are likely to be corroded by seawater at the surface in contact with seawater.
従ってこのような水中構造物の腐蝕を防止するために
従来種々の手段が講じられている。Therefore, various measures have been conventionally taken to prevent the corrosion of such an underwater structure.
一般的に行われているカバー方式は、杭表面にペトロ
ラタム系テープを巻付け防食層とし、中間層として各種
発泡体よりなる緩衝材を介在させて、その周囲を繊維強
化樹脂（FRP）製の保護カバーが覆う構造のものであ
る。The generally used cover method is to wrap a pile surface with a petrolatum tape as an anticorrosion layer, with a cushioning material made of various foams as an intermediate layer, and surrounding it with a fiber reinforced resin (FRP). It has a structure covered by a protective cover.
保護カバーは半割りに分割された円筒体状のもので、
その内周面に発泡体が内張りされ、杭に巻つけられた防
食層の周面に両側から当てがい、各保護カバーの側部に
突設させたフランジどうしをボルトで締付けて防食層を
杭に密着させ海水を杭の表面から遮断する。The protective cover is a cylindrical body divided in half,
Foam is lined on its inner peripheral surface, applied from both sides to the peripheral surface of the anticorrosion layer wrapped around the pile, and the flanges protruding from the sides of each protective cover are tightened with bolts to form the anticorrosion layer. Close to the sea to block seawater from the surface of the pile.
上記構造で、中間緩衝材のないものもあり、その場合
保護カバーのフランジ締付け部のパッキン形状や厚み等
の締代を十分にとる必要がある。Some of the above structures do not have an intermediate cushioning material, and in that case, it is necessary to sufficiently secure the tightening margin such as the packing shape and thickness of the flange tightening portion of the protective cover.
解決しようとする課題 従来の防食カバーの構造は施工時の締圧で杭に防食材
が押し付けられており、施工後の押圧の経時的な強化は
ない。Problems to be Solved In the conventional structure of the anticorrosion cover, the anticorrosive material is pressed against the pile by the tightening pressure at the time of construction, and the pressure after construction is not strengthened with time.
従って施工時に、杭への密着や十分な防食性を考慮し
た材料の選択、構造、施工方法が要求され、コスト高お
よび施工の複雑化等を招いていた。Therefore, at the time of construction, selection of materials, structure and construction method in consideration of adhesion to piles and sufficient anticorrosion property are required, resulting in high cost and complicated construction.
また中間緩衝材としての各種発泡材は、比較的に機械
物性が低くかつ柔らかい特性のため、カバー重量が重い
等の過度な負荷がかけられない場合があり、設計上の制
約や対策が必要となる。In addition, various foaming materials as intermediate cushioning materials have relatively low mechanical properties and soft characteristics, so there are cases where an excessive load such as a heavy cover weight cannot be applied, and design restrictions and countermeasures are required. Become.
課題を解決するための手段および作用 本発明はかかる点に鑑みなされたもので、その目的と
する処は、水膨潤機構を備えることで、施工を簡素化す
るとともに最適設計が可能な防食カバーの構造を供する
点にある。Means and Actions for Solving the Problems The present invention has been made in view of the above points, and the purpose thereof is to provide a water swelling mechanism to simplify the construction and to provide an optimal design of an anticorrosion cover. The point is to provide the structure.
すなわち本発明は、水中に打設される杭等の水中構造
物の防食域に取付けられる防食カバーの構造において、
防食材からなり構造物に直接接する内層と、保護カバー
からなる外層と、前記内層と外層との間にあって、その
所定範囲を占める水膨潤材および残りの範囲を占める発
泡材からなる中間層とから構成される防食カバーの構造
である。That is, the present invention, in the structure of the anticorrosion cover attached to the anticorrosion area of the underwater structure such as piles driven in water,
From an inner layer made of food-proof material and in direct contact with the structure, an outer layer made of a protective cover, and an intermediate layer made of a water-swelling material occupying a predetermined range and a foaming material occupying the remaining range between the inner layer and the outer layer. This is the structure of the anticorrosion cover that is configured.
水膨潤材を中間層に介在させているので、施工後に防
食材の杭への密着度を高めることができ、防食性、耐久
性の向上を図れるとともに施工時の締圧の設定等煩しい
作業をなくして施工を容易とする。Since the water swelling material is interposed in the intermediate layer, it is possible to increase the degree of adhesion of the food protection material to the pile after construction, improve corrosion resistance and durability, and perform complicated operations such as setting the clamping pressure during construction. To make construction easy.
また中間層として水膨潤材と発泡材とを適切に配設す
ることで最適防食設計が可能である。In addition, an optimal anticorrosion design is possible by appropriately disposing a water swelling material and a foam material as the intermediate layer.
さらに水膨潤材により発泡材を保護することができ、
外傷等に対する耐久性も向上する。Furthermore, the water swelling material can protect the foam material,
The durability against external damage is also improved.
実施例 以下第１図ないし第10図に図示した本発明に係る一実
施例について説明する。Embodiment An embodiment according to the present invention shown in FIGS. 1 to 10 will be described below.
第１図は海底に打接される鋼管杭１に本実施例に係る
防食カバー２が取付けられた状態を示す斜視図である。FIG. 1 is a perspective view showing a state in which the anticorrosion cover 2 according to the present embodiment is attached to a steel pipe pile 1 that is struck on the seabed.
円筒状の鋼管杭１の表面防食域に、円筒体を半割りに
した１対の保護カバー３が防食材、中間材を介して両側
から当てがわれ、各保護カバー３の側部に突設されたフ
ランジ４どうしをボルト９で締付けて防食カバー２を鋼
管杭１の所定箇所に固定している。A pair of protective covers 3 obtained by dividing the cylindrical body in half are applied to the surface anticorrosive area of the cylindrical steel pipe pile 1 from both sides through the anticorrosion material and the intermediate material, and project on the side portions of each protective cover 3. The flanges 4 are tightened with bolts 9 to fix the anticorrosion cover 2 to the steel pipe pile 1 at a predetermined position.
ここに使用される保護カバー３はガラス繊維とポリエ
ステル樹脂とによる繊維強化樹脂FRPの成形品であり、
その詳細を第２図ないし第５図および第６図に図示す
る。The protective cover 3 used here is a molded product of fiber reinforced resin FRP made of glass fiber and polyester resin,
The details are shown in FIGS. 2 to 5 and 6.
半円筒状の保護カバー３は、その側部に突設されたフ
ランジ４に長手方向に沿って等間隔にボルト穴５が設け
られており、フランジ４の背面と保護カバー３本体の外
周面との間にまたがってほぼ三角形状の補強部６が上部
および下部に複数個設けられてボルト９の締付力が直接
作用するフランジ４を補強している。The semi-cylindrical protection cover 3 has bolt holes 5 provided at equal intervals along the longitudinal direction on a flange 4 projecting from its side, and the back surface of the flange 4 and the outer peripheral surface of the main body of the protection cover 3 are provided. A plurality of substantially triangular reinforcing portions 6 are provided in the upper part and the lower part so as to reinforce the flange 4 to which the tightening force of the bolt 9 directly acts.
保護カバー３本体には、これを貫通する導水孔７が上
部および下部に適宜穿設されており、かつ保護カバー３
の導水孔７が設けられた内周面には、この導水孔７に連
通して導水溝８が縦横格子状に凹設されている（第４図
および第５図参照）。The main body of the protective cover 3 is provided with water-conducting holes 7 penetrating the protective cover 3 in the upper portion and the lower portion as appropriate.
On the inner peripheral surface where the water guiding holes 7 are provided, water guiding grooves 8 are formed in a vertical and horizontal lattice shape so as to communicate with the water guiding holes 7 (see FIGS. 4 and 5).
かかる保護カバー３の内周面に第６図に図示するよう
に水膨潤材10と発泡材11とが内張りされる。A water swelling material 10 and a foam material 11 are lined on the inner peripheral surface of the protective cover 3 as shown in FIG.
上部および下部を水膨潤材10とし、これらに挟まれた
中央部を発泡材11が占めるように配設される。The upper and lower parts are water swelling materials 10, and the foam material 11 occupies the central portion sandwiched between them.
上部の水膨潤材10が内張りされる保護カバー３本体内
周面に頂度前記導水孔７および導水溝８が形成されてい
る。The water guiding hole 7 and the water guiding groove 8 are formed on the inner peripheral surface of the main body of the protective cover 3 on which the upper water swelling material 10 is lined.
下部の水膨潤材10についても同様である。 The same applies to the lower water swelling material 10.
したがって防食カバー２の上部および下部では、水が
導水孔７より浸入して水膨潤材10に至り、さらに導水溝
８に導かれて水膨潤材10の外周面に行き渡る。Therefore, in the upper part and the lower part of the anticorrosion cover 2, water penetrates through the water guiding holes 7 to reach the water swelling material 10, and is further guided to the water guiding groove 8 to reach the outer peripheral surface of the water swelling material 10.
水膨潤材10はこの水を吸収して膨張することができ
る。The water swelling material 10 can absorb this water and expand.
水膨潤材10は、加硫ゴムその他のプラスチックを基材
とし、それに吸水性ポリマーを配合したもので、体積膨
張率が５〜1000％のものが好ましい。The water swelling material 10 is made of a vulcanized rubber or other plastic as a base material and a water-absorbing polymer mixed therein, and preferably has a volume expansion coefficient of 5 to 1000%.
このように水膨潤材10,発泡材11を内張りされた１対
の保護カバー３を組合わせた状態を第７図に図示する。FIG. 7 shows a state in which a pair of protective covers 3 lined with the water swelling material 10 and the foam material 11 are combined in this way.
保護カバー３の互いに対向するフランジ４の間にガス
ケット13を挟んで、ボルト穴５およびガスケット13をボ
ルト９が貫通して緊締され、両保護カバー３が内部の鋼
管杭１を締付ける。The gasket 13 is sandwiched between the flanges 4 of the protective cover 3 which are opposed to each other, the bolt 9 penetrates the bolt hole 5 and the gasket 13 and is tightened, and the protective covers 3 tighten the steel pipe pile 1 therein.
なお、両フランジ４の合わせ目の内周面に、上下方向
に長尺のセットプレート14が合わせ目に沿って張設され
る。An elongated set plate 14 is stretched in the vertical direction on the inner peripheral surface of the seam of both flanges 4 along the seam.
ガスケット13はフランジ４および水膨潤材10又は発泡
材11の端部に挟まれて、セットプレート14にまで達して
おり、セットプレート14によってガスケット13より万一
浸入しようとする水があってもこれを止水することがで
きるとともに、セットプレート14はFRPで構成されてい
てボルトによる締付け時に水膨潤材10又は発泡材11がセ
ットプレート14の外面を滑らかに移動して締付けを円滑
に行うのに役立つ。The gasket 13 is sandwiched between the flange 4 and the ends of the water swelling material 10 or the foam material 11 and reaches the set plate 14. Even if there is water that the set plate 14 should try to penetrate from the gasket 13, While the set plate 14 is made of FRP, the water swelling material 10 or the foam material 11 smoothly moves on the outer surface of the set plate 14 when tightened by a bolt, and the tightening is performed smoothly. Be useful.
第７図において切欠いて示すように保護カバー３の上
部および下部は水膨潤材10が内張りされ、中央部は発泡
材11が内張りされている。As shown by notching in FIG. 7, the water swelling material 10 is lined on the upper and lower portions of the protective cover 3, and the foam material 11 is lined on the central portion.
第８図は保護カバー３の水膨潤材10が内張りされた上
部における横断面図であり、下部も同様である。FIG. 8 is a cross-sectional view of the upper portion of the protective cover 3 lined with the water swelling material 10, and the lower portion is also the same.
第９図は保護カバー３の発泡材11が内張りされた中央
部における横断面図である。FIG. 9 is a transverse sectional view of the central portion of the protective cover 3 lined with the foam material 11.
このように中央の発泡材11の上下部分に水膨潤材10が
配置されて内張りされた保護カバー３を鋼管杭１に取付
けるに際し、鋼管杭１の表面には防食テープ15を巻き付
けて防食カバー２の内層とする。When attaching the protective cover 3 lined with the water swelling material 10 above and below the center foam material 11 to the steel pipe pile 1, the anticorrosion cover 2 is wrapped around the surface of the steel pipe pile 1 with the anticorrosion tape 15. The inner layer of
鋼管杭１の防食域に巻き付けられた防食テープ15の所
定対称位置にセットプレート14を当てがい、両側から保
護カバー３を被せ、保護カバー３どうしの合わせ目がセ
ットプレート14の処にくるようにし、同合わせ目のフラ
ンジ４間にガスケット13を挟むようにする。Put the set plate 14 on the predetermined symmetrical position of the anticorrosion tape 15 wrapped around the anticorrosion area of the steel pipe pile 1, cover the protective covers 3 from both sides, and make sure that the seam between the protective covers 3 is at the set plate 14. , The gasket 13 is sandwiched between the flanges 4 of the same joint.
そしてボルト９でフランジ４を締付けると中間層の水
膨潤材10および発泡材11が防食テープ15を鋼管杭１に押
圧して密着させることができる。Then, when the flange 4 is tightened with the bolt 9, the water swelling material 10 and the foam material 11 of the intermediate layer can press the anticorrosion tape 15 against the steel pipe pile 1 to bring them into close contact.
こうして保護カバー３が鋼管杭１に固定された後、保
護カバー3,水膨潤材10および防食テープ15の外に露出し
た上下端面にその近傍の鋼管杭１の外周面に亘って粘土
状の仕上材16が塗込められ、端面を完全に塞ぐ。After the protective cover 3 is fixed to the steel pipe pile 1 in this way, the clay-like finish is formed on the upper and lower end faces exposed to the outside of the protective cover 3, the water swelling material 10 and the anticorrosion tape 15 over the outer peripheral surface of the steel pipe pile 1 in the vicinity thereof. Material 16 is applied and completely closes the end face.
仕上材16はエポキシ樹脂からなり、水中でも硬化する
性質を有する。The finishing material 16 is made of an epoxy resin and has a property of being hardened even in water.
こうして鋼管杭１への防食カバー２の取付けが完了し
第１図に図示する状態となる。Thus, the attachment of the anticorrosion cover 2 to the steel pipe pile 1 is completed and the state shown in FIG. 1 is obtained.
第１図における防食カバー２の端部のＸ−Ｘ断面をみ
ると第10図のようであり、鋼管杭１表面に防食テープ15
が巻き付けられて内層をなし、外層の保護カバー３に内
張りされた水膨潤材10が中間層として防食テープ15を押
圧している。The XX cross section of the end of the anticorrosion cover 2 in FIG. 1 is as shown in FIG. 10, and the anticorrosion tape 15 is formed on the surface of the steel pipe pile 1.
Is wound around to form an inner layer, and the water swelling material 10 lined on the protective cover 3 of the outer layer presses the anticorrosion tape 15 as an intermediate layer.
以上３層構造をなす防食テープ15,水膨潤材10,保護カ
バー３の端面は仕上材16が水密に覆っていて、各層の界
面からの水の浸入を防止している。The finishing material 16 covers the end surfaces of the anticorrosion tape 15, the water swelling material 10, and the protective cover 3 having the three-layer structure in a watertight manner to prevent water from entering from the interface of each layer.
本実施例に係る防食カバー２は以上のような構造をし
て鋼管杭１に取付けられているので、施工時のボルト９
による保護カバー３の締付けにより防食テープ15が鋼管
杭１に密着されて水を遮断し鋼管杭１の腐蝕を防止する
とともに、施工後において保護カバー３の上下部分に設
けられた導水孔７を通って浸入した水が導水溝８に導か
れて水膨潤材10の外面に行き渡ると水膨潤材10はこれを
吸収して膨張し、この膨張圧により防食テープ15はさら
に鋼管杭１への密着度を高め、防食効果を強化すること
ができ、長期に亘る耐久力も得られる。Since the anticorrosion cover 2 according to the present embodiment has the above-described structure and is attached to the steel pipe pile 1, the bolt 9 at the time of construction is used.
By tightening the protective cover 3 with the anti-corrosion tape 15, the anticorrosion tape 15 is adhered to the steel pipe pile 1 to block water and prevent corrosion of the steel pipe pile 1, and after the construction, it passes through the water guiding holes 7 provided in the upper and lower portions of the protective cover 3. When the water that has infiltrated is guided to the water guiding groove 8 and spreads to the outer surface of the water swelling material 10, the water swelling material 10 absorbs and expands, and the expansion pressure causes the anticorrosion tape 15 to further adhere to the steel pipe pile 1. And the anticorrosion effect can be enhanced, and long-term durability can also be obtained.
従って施工時に鋼管杭１への密着や十分な防食性を考
慮した材料，構造，施工法が要求されず、低コストおよ
び施工の簡素化が図れる。Therefore, at the time of construction, materials, structures, and construction methods in consideration of adhesion to the steel pipe pile 1 and sufficient corrosion resistance are not required, and low cost and simplification of construction can be achieved.
また既設の杭に対しても施工が可能である。 It can also be installed on existing piles.
中間層の発泡材11および弾性率の高い水膨潤材10によ
り緩衝効果は維持され、発泡材のみを中間層とした場合
の負荷の制約が緩められ、設計の自由度が増すととも
に、水膨潤材10と発泡材11との配置および占有体積等を
用途，現場の状況等に合わせて設定することが可能で最
適防食設計ができる。The cushioning effect is maintained by the foam material 11 of the intermediate layer and the water swelling material 10 having a high elastic modulus, the constraint of the load when only the foam material is used as the middle layer is relaxed, the degree of freedom in design is increased, and the water swelling material is increased. It is possible to set the arrangement of 10 and the foam material 11 and the occupied volume, etc. according to the application, the situation of the site, etc., and the optimum anticorrosion design can be done.
すなわち杭全体が沈水域となる場合は本実施例のよう
に上下部分を水膨潤材層とすることが考えられるが、杭
の上部が空中にある場合では沈水域のみ水膨潤材層と
し、空中域を発泡材層とすることも考えられる。That is, when the entire pile is in the submerged area, the upper and lower parts may be the water swelling material layer as in this example, but when the upper part of the pile is in the air, only the submerged area is the water swelling material layer and the It is also conceivable to make the region a foam layer.
また発泡材11が水膨潤材10により保護される構造なの
で、外傷に対する耐久性も向上している。Further, since the foam material 11 is structured to be protected by the water swelling material 10, the durability against external damage is also improved.
以上の実施例では、防食テープ15を鋼管杭１に巻き付
け、その上に水膨潤材10および発泡材11が内張りされた
保護カバー３を当てがい締付けるようにしていたが、か
かる防食テープ15の代わりに防食シートを水膨潤材10お
よび発泡材11の内面にさらに内張りし一体に成形してお
くことも考えられ、こうしておくことで現場での防食テ
ープ15の鋼管杭１への巻き付け作業を省き施工をさらに
簡素化できる。In the above examples, the anticorrosion tape 15 was wrapped around the steel pipe pile 1, and the protective cover 3 having the water swelling material 10 and the foam material 11 lined thereon was applied and tightened. However, instead of the anticorrosion tape 15, It may be possible to further line the inner surface of the water swelling material 10 and the foam material 11 and integrally mold it, and by doing so, the work of winding the anticorrosion tape 15 around the steel pipe pile 1 at the site can be omitted. Can be further simplified.
発明の効果 本発明は、防食カバーの中間層に水膨潤材と発泡材と
を組合わせる構成としたので、防食材の水中構造物への
密着度の強化を施工後に得ることができ、防食性を向上
させ長期に亘る耐久力を維持できる。Effect of the Invention Since the present invention is configured to combine the water swelling material and the foaming material in the intermediate layer of the anticorrosion cover, it is possible to obtain enhanced adhesion of the anticorrosion material to the underwater structure after construction, and anticorrosion property. Can be improved and durability can be maintained over a long period of time.
また施工の簡素化およびコストの低減を図ることがで
きる。In addition, the construction can be simplified and the cost can be reduced.
施工も新設，既設を問わず可能である。 Construction is possible regardless of whether it is new or existing.
水膨潤材と発泡材とを組合わせることにより設計の自
由度を増し、被防食体の防食仕様条件に対する最も有効
な最適防食設計が可能である。By combining a water-swelling material and a foaming material, the degree of freedom in design is increased, and the most effective optimum anticorrosion design for the anticorrosion specification conditions of the anticorrosion object is possible.
さらに水膨潤材により発泡材が保護され外傷等に対す
る耐久性を増すことができる。Further, the foaming material is protected by the water swelling material and durability against external damage can be increased.
第１図は本発明に係る一実施例の防食カバーを施した鋼
管杭の斜視図、第２図は同防食カバーの保護カバーの平
面図、第３図は同内面図、第４図は第３図のIV-IV断面
図、第５図は第３図のＶ−Ｖ断面図、第６図は保護カバ
ーおよび水膨潤材，発泡材の組合わせを示す斜視図、第
７図は防食カバーの外観図、第８図は第７図のVIII-VII
I断面図、第９図は第７図のIX-IX断面図、第10図は第１
図のＸ−Ｘ断面図である。 １……鋼管杭、２……防食カバー、３……保護カバー、
４……フランジ、５……ボルト穴、６……補強部、７…
…導水孔、８……導水溝、９……ボルト、10……水膨潤
材、11……発泡材、13……ガスケット、14……セットプ
レート、15……防食テープ、16……仕上材。FIG. 1 is a perspective view of a steel pipe pile provided with an anticorrosion cover according to an embodiment of the present invention, FIG. 2 is a plan view of the protective cover of the anticorrosion cover, FIG. 3 is an inside view of the same, and FIG. 3 is a sectional view taken along line IV-IV, FIG. 5 is a sectional view taken along line VV of FIG. 3, FIG. 6 is a perspective view showing a combination of a protective cover, water swelling material and foam material, and FIG. 7 is an anticorrosion cover. Fig. 8 is an external view of Fig. VIII-VII in Fig. 7.
I sectional view, FIG. 9 is a IX-IX sectional view of FIG. 7, and FIG.
It is a XX sectional view of a figure. 1 ... Steel pipe pile, 2 ... corrosion protection cover, 3 ... protection cover,
4 ... Flange, 5 ... Bolt hole, 6 ... Reinforcement part, 7 ...
… Water guide hole, 8 …… Water guide groove, 9 …… Bolt, 10 …… Water swelling material, 11 …… Foam material, 13 …… Gasket, 14 …… Set plate, 15 …… Corrosion-proof tape, 16 …… Finishing material .
Claims (1)
域に取付けられる防食カバーの構造において、防食材か
らなり構造物に直接接する内層と、保護カバーからなる
外層と、前記内層と外層との間にあって、その所定範囲
を占める水膨潤材および残りの範囲を占める発泡材から
なる中間層とから構成されることを特徴とする防食カバ
ーの構造。1. A structure of an anticorrosion cover attached to an anticorrosion area of an underwater structure such as a pile to be driven in water, an inner layer made of an anticorrosive material and in direct contact with the structure, an outer layer consisting of a protective cover, and the inner layer. A structure of an anticorrosion cover, comprising: a water-swelling material that occupies a predetermined range between the outer layer and the outer layer; and an intermediate layer made of a foam material that occupies the remaining range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27089588A JP2511296B2 (en) | 1988-10-28 | 1988-10-28 | Structure of anticorrosion cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27089588A JP2511296B2 (en) | 1988-10-28 | 1988-10-28 | Structure of anticorrosion cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02120420A JPH02120420A (en) | 1990-05-08 |
| JP2511296B2 true JP2511296B2 (en) | 1996-06-26 |
Family
ID=17492469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27089588A Expired - Lifetime JP2511296B2 (en) | 1988-10-28 | 1988-10-28 | Structure of anticorrosion cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2511296B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4636732B2 (en) * | 2001-05-29 | 2011-02-23 | 海和テック株式会社 | Mooring device for fences |
| JP6242070B2 (en) * | 2013-04-18 | 2017-12-06 | 新日鐵住金株式会社 | Steel sheet pile or steel pipe sheet pile anticorrosion structure |
-
1988
- 1988-10-28 JP JP27089588A patent/JP2511296B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02120420A (en) | 1990-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5900195A (en) | Protection of pipeline joint connections | |
| US7520535B2 (en) | Pipeline joint infill and protective sleeve | |
| JP2511296B2 (en) | Structure of anticorrosion cover | |
| JP6531634B2 (en) | Construction method of pile type foundation structure | |
| JPH0340929Y2 (en) | ||
| JP3446640B2 (en) | Flexible submerged tunnel and its construction method | |
| JP2789106B2 (en) | Corrosion protection device for piles and method of mounting corrosion protection device | |
| JPH0139781Y2 (en) | ||
| JP4308363B2 (en) | Flexible joint | |
| JPS59228596A (en) | Embedded case | |
| JPH0139782Y2 (en) | ||
| JPS6133093Y2 (en) | ||
| JPH0340919Y2 (en) | ||
| JPH0213557Y2 (en) | ||
| JP2564154B2 (en) | Anticorrosion structure | |
| CN209128949U (en) | A kind of pier anticollision system | |
| JPH0340918Y2 (en) | ||
| JPH0437973Y2 (en) | ||
| JP3530728B2 (en) | Cast iron pressure plate for anchor method | |
| JP2000186785A (en) | Laying structure of pipe, laying method thereof, and invert member used in this laying structure | |
| JPS60343Y2 (en) | Water stop device at joint surface of concrete block | |
| JPH0755600Y2 (en) | Underwater sound absorbing wedge unit | |
| JPH09125437A (en) | Anticorrosive coating structure of steel material and anticorrosive execution method | |
| JP2000308228A (en) | Submarine cable laying method | |
| JP2733825B2 (en) | Culvert fittings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960206 |