JPH01131731A - Steel sheet pile coated with anti-corrosive - Google Patents
Steel sheet pile coated with anti-corrosiveInfo
- Publication number
- JPH01131731A JPH01131731A JP62289528A JP28952887A JPH01131731A JP H01131731 A JPH01131731 A JP H01131731A JP 62289528 A JP62289528 A JP 62289528A JP 28952887 A JP28952887 A JP 28952887A JP H01131731 A JPH01131731 A JP H01131731A
- Authority
- JP
- Japan
- Prior art keywords
- sheet pile
- steel sheet
- corrosion
- coating layer
- coated steel
- 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 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000005260 corrosion Methods 0.000 claims description 64
- 239000011247 coating layer Substances 0.000 claims description 49
- 230000001681 protective effect Effects 0.000 claims description 22
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 abstract description 13
- 238000000576 coating method Methods 0.000 abstract description 13
- -1 polyethylene Polymers 0.000 abstract description 8
- 239000004698 Polyethylene Substances 0.000 abstract description 6
- 229920000573 polyethylene Polymers 0.000 abstract description 6
- 229920000728 polyester Polymers 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 239000004593 Epoxy Substances 0.000 abstract description 2
- 239000004952 Polyamide Substances 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920002647 polyamide Polymers 0.000 abstract description 2
- 229920001155 polypropylene Polymers 0.000 abstract description 2
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 abstract 1
- 239000000806 elastomer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 13
- 239000000565 sealant Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004591 urethane sealant Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は防食被覆層端部の損傷あるいは剥離による欠陥
の発生を防止できる防食被覆鋼矢板に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an anti-corrosion coated steel sheet pile that can prevent the occurrence of defects due to damage or peeling of the ends of the anti-corrosion coat layer.
［従来技術］
鋼矢板は海洋構造物、構造物基礎、護岸工事等の土木建
築用資材として広く使用されている。これらの用途に使
用される鋼矢板は常に海水、雨水等に曝されていると共
に酸素が介在した腐食環境にあるにもかかわらず、長年
月に亘る耐久性が要求されている。この問題に対処し、
近年、ウレタン樹脂やポリエチレン樹脂等の被覆が形成
された重防食の防食被覆鋼矢板が開発されている。この
防食被覆鋼矢板は、一般に、継手嵌合部を除く長手方向
の必要部分に２〜５ｍｍの厚膜被覆を形成させたもので
ある。防食被覆鋼矢板の被覆層端部においては被覆層と
鋼矢板本体との間には大きな段差が形成されているので
、打設時に外力が作用したり、あるいは海中での使用に
おいては、建込み後に海洋生物の付着、生゛長の作用に
よって被覆層の浮きが生じ、被覆層が端部から剥離する
虞がある。[Prior Art] Steel sheet piles are widely used as civil engineering construction materials for offshore structures, structure foundations, seawall construction, and the like. Steel sheet piles used in these applications are constantly exposed to seawater, rainwater, etc., and are required to have durability over many years, even though they are in a corrosive environment containing oxygen. address this issue,
In recent years, heavy corrosion-resistant coated steel sheet piles coated with urethane resin, polyethylene resin, or the like have been developed. This anti-corrosion coated steel sheet pile generally has a thick film coating of 2 to 5 mm formed on necessary parts in the longitudinal direction, excluding joint fitting parts. At the end of the coating layer of anti-corrosion coated steel sheet piles, there is a large step between the coating layer and the main body of the steel sheet pile. Later, due to the attachment and growth of marine organisms, the coating layer may float, and there is a possibility that the coating layer may peel off from the edges.
この問題を解決すべく提案されているものとして特開昭
６０−２３３２３２号公報に示されている防食被覆鋼矢
板がある。第４図は特開昭６０−２３３２３２号公報に
添付されている防食被覆鋼矢板の被覆状態を示す斜視図
を基に、その被覆層端部の断面について本発明者らが拡
大作図した説明図である。この防食被覆鋼矢板は下地処
理がされた鋼矢板本体１上にポリエチレン被覆層１０と
接着剤層１１とからなる防食被覆層が形成されている。As a solution to this problem, there is an anti-corrosion coated steel sheet pile disclosed in Japanese Unexamined Patent Publication No. 60-233232. FIG. 4 is an explanatory diagram enlarged by the inventors of the cross section of the end of the coating layer, based on a perspective view showing the coating state of the anticorrosive coated steel sheet pile attached to JP-A-60-233232. It is. In this anti-corrosion coated steel sheet pile, an anti-corrosion coating layer consisting of a polyethylene coating layer 10 and an adhesive layer 11 is formed on a steel sheet pile body 1 which has been subjected to surface treatment.
そして、防食被覆層の端縁４に沿ってシーリング材層１
２が形成されている。このシーリング材層１２はシーリ
ング材をスプレーガンまたはコーキングガンとへうなど
で塗布または押し付けて、その断面が三角形状にし、帯
状に形成されている。A sealing material layer 1 is then applied along the edge 4 of the anti-corrosion coating layer.
2 is formed. This sealing material layer 12 is formed into a band shape with a triangular cross section by applying or pressing a sealing material with a spray gun or caulking gun.
［発明が解決しようとする問題点］
しかしながら、従来の防食被覆鋼矢板においては、シー
リング材層を完全かつ連続的に形成することは困難であ
る。また、シーリング材層はポリエチレン被覆層との接
着力も弱い上に、シーリング材自体が柔軟であるため、
外力による衝撃を受けると、シーリング材層は容易に剥
離したり、あるいは破壊したりする。さらに、海中にお
ける生物付着については、ポリエチレン被覆層の表面よ
りもシーリング材層表面の方が付着しやすいと言う問題
もある。このように、従来技術における防食被覆層の剥
離防止手段は未だ不十分であると言わざるを得ない。[Problems to be Solved by the Invention] However, in conventional anti-corrosion coated steel sheet piles, it is difficult to form a sealant layer completely and continuously. In addition, the adhesive strength of the sealant layer to the polyethylene coating layer is weak, and the sealant itself is flexible, so
When subjected to impact from external forces, the sealing material layer easily peels off or is destroyed. Furthermore, there is the problem that biofouling in the sea is more likely to adhere to the surface of the sealant layer than to the surface of the polyethylene coating layer. As described above, it must be said that the means for preventing peeling of the anticorrosion coating layer in the prior art is still insufficient.
本発明は、このような従来技術の問題を解決するために
なされたものであり、打設時の外力によっても、あるい
は建込み後に海洋生物が付着・生長しても防食被覆層の
端部を損傷することがなく、したがって、防食被覆層が
剥離することがない防食被覆鋼矢板を提供することを目
的とする。The present invention was made in order to solve the problems of the conventional technology, and it is possible to prevent the edges of the anti-corrosion coating layer from being damaged even by external force during pouring or by the attachment and growth of marine organisms after erection. It is an object of the present invention to provide an anti-corrosion coated steel sheet pile that is not damaged and, therefore, the anti-corrosion coating layer does not peel off.
Ｕ問題点を解決するための手段］
本発明は、防食被覆層が少なくとも片面に形成されてい
る防食被覆鋼矢板において、前記防食被覆鋼矢板の長手
方向における前記防食被覆層の端部を覆い、鋼矢板本体
に固着された保護部材を備え、この保護部材は少なくと
も前記防食被覆鋼矢板の打設時に下方に位置する防食被
覆層の端部に備えたことを特徴とする防食被覆鋼矢板で
ある。Means for Solving Problem U] The present invention provides an anti-corrosion coated steel sheet pile in which an anti-corrosion coating layer is formed on at least one side, covering an end of the anti-corrosion coating layer in the longitudinal direction of the anti-corrosion coated steel sheet pile, An anti-corrosion coated steel sheet pile comprising a protective member fixed to the steel sheet pile body, the protective member being provided at least at the end of the anti-corrosion coating layer located below when the anti-corrosion coated steel sheet pile is driven. .
［作用］
防食被覆層の端部は損傷しやすい部位であるが、この端
部を強度の高いＦＲＰや耐食性鋼材で作られた保護部材
で覆い、保護しているので、防食被覆層の端部が損傷さ
れることはない。[Function] The edges of the anti-corrosion coating layer are easily damaged, but since these edges are covered and protected with a protective member made of high-strength FRP or corrosion-resistant steel, the edges of the anti-corrosion coating layer are protected. will not be damaged.
［発明の実施例］ 以下、本発明の実施例を添付図面に基づいて説明する。[Embodiments of the invention] Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の一実施例を示す防食被覆鋼矢板であり
、凸側面に防食被覆層を形成させた防食鋼矢板の斜視図
である。第１図において、鋼矢板本体１の防食施工を要
する部位には、継手嵌合部２を除いて２〜３ｍｍ程度の
厚さの防食被覆層３が形成されている。この防食被覆層
３の端縁４の両側周辺には、鋼矢板本体１および防食被
覆層３に合わせた曲面を有し、防食被覆層３の端部を覆
い、鋼矢板本体１に固着された保護部材５が設けられて
いる。FIG. 1 is a perspective view of an anti-corrosion coated steel sheet pile showing an embodiment of the present invention, in which an anti-corrosion coating layer is formed on the convex side surface. In FIG. 1, an anti-corrosion coating layer 3 having a thickness of about 2 to 3 mm is formed on the parts of the steel sheet pile main body 1 that require anti-corrosion construction, excluding the joint fitting part 2. The edges 4 of this anti-corrosion coating layer 3 have curved surfaces on both sides to match the steel sheet pile body 1 and the anti-corrosion coating layer 3, cover the ends of the anti-corrosion coating layer 3, and are fixed to the steel sheet pile body 1. A protection member 5 is provided.
、第２図（ａ）〜（Ｃ）は第１図におけるＡ−Ａ矢視部
分の断面を示したものであり、保護部材５を固着した状
態の説明図である。第２図（ａ）は打設方向に位置する
端部を斜めに切断した保護部材５をボルト・ナツト６に
よって締め、鋼矢板本体１に固着する場合である。ボル
ト・ナツト６の取り付は箇所の数は鋼矢板本体１の大き
さ、保護部材５の材質等によって決められる。鋼矢板本
体１、防食被覆層３、保護部材５に囲まれて形成される
空隙７はそのままの状態でも支障はないが、充填材を施
しておけばさらによい。, FIGS. 2(a) to 2(C) are cross-sectional views taken along the line A--A in FIG. 1, and are explanatory diagrams showing a state in which the protective member 5 is fixed. FIG. 2(a) shows a case where a protective member 5 whose end located in the driving direction is cut diagonally is fixed to the steel sheet pile main body 1 by tightening with bolts and nuts 6. The number of locations for attaching bolts and nuts 6 is determined by the size of the steel sheet pile body 1, the material of the protective member 5, etc. Although there is no problem in leaving the void 7 surrounded by the steel sheet pile body 1, the anticorrosion coating layer 3, and the protection member 5 as it is, it is even better if it is filled with a filler.
第２図（ｂ）は第２図（ａ）と同様にボルト・ナツト６
によって保護部材５を鋼矢板本体１に固着させるもので
あるが、防食被覆層３の端部の面取りをした構造になっ
ており、不均一膜厚のものにも適用できる。Figure 2(b) shows the bolt/nut 6 in the same way as Figure 2(a).
Although the protection member 5 is fixed to the steel sheet pile body 1 by using the structure shown in FIG.
第２図（ｃ）は保護部材５の材質が金属に限定されもの
であるが、打設方向に位置する保護部材５の端部を鋼矢
板本体１に溶接して固着している。In FIG. 2(c), the material of the protection member 5 is limited to metal, but the end portion of the protection member 5 located in the driving direction is welded and fixed to the steel sheet pile body 1.
８は溶接箇所を示すに
のように、本発明の防食被覆鋼矢板は防食被覆層３の端
部が保護部材５で覆われ、打設時の外力は保護部材５が
受ける構造となっている。As shown in 8, a welding point, in the anti-corrosion coated steel sheet pile of the present invention, the end portion of the anti-corrosion coating layer 3 is covered with a protective member 5, and the external force at the time of pouring is received by the protective member 5. .
前記防食被覆層３の材質としてはウレタンエラストマー
やポリエチレンが使用される。保護部材゛ ５の材質に
は機械的強度の高い剛体が適し、合成樹脂系の材料や金
属材料が使用される６合成樹脂系の材料としてはポリエ
ステル系やエポキシ系の熱硬化性樹脂のＦＲＰ、ポリア
ミドやポリプロピレンの熱可塑性樹脂のＦＲＰ （ＦＲ
ＴＰ） 、あるいは硬質プラスチックが適用できる。ま
た、金属材料としてはステンレス鋼材、防食被覆鋼材等
耐食性の鋼材が使用される。As the material of the anticorrosive coating layer 3, urethane elastomer or polyethylene is used. A rigid body with high mechanical strength is suitable for the material of the protective member 5, and synthetic resin materials and metal materials are used.6 Examples of synthetic resin materials include FRP of polyester and epoxy thermosetting resins; FRP (FR) made of thermoplastic resin such as polyamide and polypropylene
TP) or hard plastic can be applied. Further, as the metal material, a corrosion-resistant steel material such as stainless steel material or anti-corrosion coated steel material is used.
第３図（ａ）および（ｂ）は本発明の他の実施例を示す
説明図である。第３図（ａ）は第１図の場合と同じ鋼矢
板本体１に同様の防食被覆層３が形成されている防食被
覆鋼矢板の斜視図である。そして、防食被覆層３の端部
に配置する保護部材は５ａ〜５Ｃの三種類の形状の部材
が使用され、複数に分割されて、ボルト・ナツト締め、
溶接などにより鋼矢板本体１に固着されている。第３図
（ｂ）は保護部材だけの断面を示した図である。第３図
（ｂ）で明らかなごとく、保護部材は２種類の平面用の
保護部材５ａ、５ｂと曲面用の保護部材５ｃによって構
成されている。保護部材を分割することによる利点は、
鋼矢板の形状に合わせて一体成形した単一の保護部材を
使用する場合には、鋼矢板のサイズ毎に多種類の保護部
材を揃えておかなければならないのに対し、分割すれば
比較的単純な数種の保護部材だけを揃えておけばよく、
保護部材の管理が容易になる。FIGS. 3(a) and 3(b) are explanatory diagrams showing another embodiment of the present invention. FIG. 3(a) is a perspective view of an anti-corrosion coated steel sheet pile in which the same anti-corrosion coating layer 3 is formed on the same steel sheet pile body 1 as in FIG. 1. The protective members placed at the ends of the anti-corrosion coating layer 3 have three different shapes, 5a to 5C, and are divided into a plurality of parts and tightened with bolts and nuts.
It is fixed to the steel sheet pile body 1 by welding or the like. FIG. 3(b) is a diagram showing a cross section of only the protection member. As is clear from FIG. 3(b), the protection member is composed of two types of protection members 5a and 5b for flat surfaces and protection member 5c for curved surfaces. The advantages of dividing the protective member are:
When using a single protection member that is integrally molded to match the shape of the steel sheet pile, it is necessary to prepare multiple types of protection members for each size of steel sheet pile, whereas dividing the steel sheet pile is relatively simple. All you need is a few types of protection materials,
Management of protective members becomes easier.
なお、第１図〜第３図で説明した防食被覆鋼矢板は防食
被覆層が鋼矢板本体の凸側面に形成されたものだけであ
るが、防食被覆層を鋼矢板本体の凹側面に形成させても
、第１図〜第３図の場合と同様にして保護部材を固着さ
せることができ、また、同一の効果を得ることができる
。Note that the anti-corrosion coated steel sheet piles explained in Figs. 1 to 3 are those in which the anti-corrosion coating layer is formed on the convex side of the steel sheet pile body, but the anti-corrosion coating layer can be formed on the concave side of the steel sheet pile body. Even in this case, the protective member can be fixed in the same manner as in the case of FIGS. 1 to 3, and the same effect can be obtained.
次に、本発明の実施例について説明する。Next, examples of the present invention will be described.
（実施例）
鋼矢板本体として２ｍ長のＵ型鋼矢板（ＮＫＳＰ−ＩＪ
ａ型；日本鋼管層）を用意し、その凸側面にショツトブ
ラストを施した。この鋼矢板本体の上端および下端から
それぞれ２５０ｍｍまでの面を除き、中間の１．５ｍの
面に反応硬化型プライマーを塗布して硬化させた後、接
着性ポリエチレンを介して高密度ポリエチレンを２．５
ｍｍ厚に被覆し、防食被覆層を形成させた。この防食被
覆層の密着力を測定したところ、２０℃で約８Ｋｇ／１
０ｍｍ幅であった。次に、ポリエステル系ＦＲＰ製の保
護部材を防食被覆層の端部が覆われる位置にして、鋼矢
板本体にステンレス製のボルト・ナツトで固着させた。(Example) A 2m long U-shaped steel sheet pile (NKSP-IJ) was used as the steel sheet pile main body.
A type (Japanese steel pipe layer) was prepared, and shot blasting was performed on its convex side surface. Excluding the surfaces up to 250 mm from the upper and lower ends of this steel sheet pile body, a reaction-curing primer is applied to the middle 1.5 m surface, and after hardening, high-density polyethylene is coated with adhesive polyethylene. 5
It was coated to a thickness of mm to form an anticorrosion coating layer. When we measured the adhesion of this anti-corrosion coating layer, it was found to be approximately 8 kg/1 at 20°C.
The width was 0 mm. Next, the protective member made of polyester-based FRP was positioned so that the end portion of the anticorrosive coating layer was covered, and was fixed to the steel sheet pile body using stainless steel bolts and nuts.
前記保護部材は第３図すに示したものと同じであり、平
面用の部材２種類と曲面用の部材の３種類で構成され、
５分割にしたものを使用した。このようにして作られた
防食被覆鋼矢板を２個準備し、■海洋暴露試験と■土壌
への打設試験を実施した。The protection member is the same as that shown in FIG. 3, and is composed of three types: two types of members for flat surfaces and members for curved surfaces,
I used one that was divided into 5 parts. Two anti-corrosion coated steel sheet piles made in this manner were prepared and subjected to (1) an ocean exposure test and (2) a soil placement test.
■海洋暴露試験は試験体である防食被覆鋼矢板を海洋の
干満帯に位置するように立て掛けた状態で１年間の試験
をした。試験後、外観および防食被覆層端部の状態を調
べた結果では、保護部材を含め全面にフジッボの付着が
見られ、特に上端部および下端部の未被覆の鋼面上には
密生していた。しかし、防食被覆層の端部近傍には生物
の付着は全く見られず、また、この近傍の防食被覆層に
おける被覆の欠陥は全く認められなかった。■The marine exposure test was carried out for one year with the test specimen, a steel sheet pile with anti-corrosion coating, propped up against the tidal zone of the ocean. After the test, we examined the appearance and the condition of the edges of the anti-corrosion coating layer, and found that Fujibuki was attached to the entire surface including the protective member, and was particularly dense on the uncoated steel surfaces at the top and bottom edges. . However, no living organisms were observed near the ends of the anticorrosion coating layer, and no coating defects were observed in the anticorrosion coating layer in this vicinity.
■打設試験は、試験体を打設した後、これを取り出して
防食被覆層を観察した結果、防食被覆層の表面には摩擦
疵（疵の９０％以上は深さ４０μｍ以下）が発生してい
たが、防食被覆層端部近傍には疵等の発生は全く認めら
れながった。■In the pouring test, after pouring the test specimen, it was taken out and the anticorrosion coating layer was observed. As a result, friction scratches (more than 90% of the scratches were 40 μm or less in depth) were generated on the surface of the anticorrosion coating layer. However, no scratches or the like were observed near the edges of the anticorrosive coating layer.
（比較例）
防食被覆層端部に保護部材を備える代わりに、防食被覆
層の端縁に湿気硬化型ウレタン系シーリング材層を形成
させた・こと以外は害施例と同じ条件で■海洋暴露試験
および■打設試験を実施した。■海洋暴露試験において
は、全面にフジッボの付着が見られ、特に上端部および
下端部の未被覆の鋼面とシーリング材層およびそのの周
辺に密生していた。そして、防食被覆層の下端部を調べ
たところ、生物付着および波浪が原因と思われる防食被
覆層の剥離が生じていた。■打設試験では、シーリング
材層が破壊されていた。また、防食被覆層の上端部付近
に深さ５００μｍを超える疵が数か所に見られ、さらに
、部分的ではあるが被覆の浮きが生じていた。(Comparative example) Exposure to the sea under the same conditions as the example except that instead of providing a protective member at the edge of the anti-corrosion coating layer, a moisture-curing urethane sealant layer was formed on the edge of the anti-corrosion coating layer. Tests and ■Pouring tests were conducted. ■In the marine exposure test, Fujibuki was found to be attached to the entire surface, and was particularly dense on the uncoated steel surfaces at the top and bottom, the sealant layer, and their surroundings. When the lower end of the anti-corrosion coating layer was examined, it was found that the anti-corrosion coating layer had peeled off, which was thought to be caused by biofouling and waves. ■In the pouring test, the sealant layer was destroyed. In addition, several flaws with a depth of more than 500 μm were observed near the upper end of the anticorrosive coating layer, and the coating was partially lifted.
［発明の効果］
本発明の防食被覆鋼矢板は、防食被覆層の端部を覆い、
鋼矢板本体に固着された保護部材を備えているので、打
°設時に外力が作用しても防食被覆層の端部が損傷され
ず、また、海洋生物が付着することはなく、したがって
防食被覆層の剥離を惹起することがない。[Effect of the invention] The anti-corrosion coated steel sheet pile of the present invention covers the ends of the anti-corrosion coating layer,
Since the protective member is fixed to the steel sheet pile body, the edges of the anti-corrosion coating will not be damaged even if external force is applied during installation, and marine organisms will not attach to the anti-corrosion coating. Does not cause peeling of layers.
第１図は本発明の一実施例を示す防食被覆鋼矢板の斜視
図、第２図は第１図におけるＡ−Ａ矢視部分の断面を示
したものであり、保護部材を固着した状態の説明図、第
３図は本発明の他の実施例を示す斜視図、第４図は従来
技術の防食被覆鋼矢板の被覆状態を示す説明図である。
１・・・鋼矢板本体、３・・・防食波ＷＩ層、４・・・
防食被覆層の端縁、５・・・保護部材。Fig. 1 is a perspective view of an anti-corrosion coated steel sheet pile showing an embodiment of the present invention, and Fig. 2 is a cross section taken along the line A-A in Fig. 1, showing the state in which the protective member is fixed. FIG. 3 is a perspective view showing another embodiment of the present invention, and FIG. 4 is an explanatory view showing the coating state of a conventional corrosion-proof coated steel sheet pile. 1... Steel sheet pile body, 3... Corrosion protection wave WI layer, 4...
Edge of anti-corrosion coating layer, 5... protection member.
Claims (4)
食被覆鋼矢板において、前記防食被覆鋼矢板の長手方向
における前記防食被覆層の端部を覆い、鋼矢板本体に固
着された保護部材を備え、この保護部材は少なくとも前
記防食被覆鋼矢板の打設時に下方に位置する防食被覆層
の端部に備えたことを特徴とする防食被覆鋼矢板。(1) An anti-corrosion coated steel sheet pile having an anti-corrosion coating layer formed on at least one side, including a protective member that covers an end of the anti-corrosion coating layer in the longitudinal direction of the anti-corrosion coated steel sheet pile and is fixed to the main body of the steel sheet pile. An anti-corrosion coated steel sheet pile, characterized in that the protective member is provided at least at an end of the anti-corrosion coating layer located below when the anti-corrosion coated steel sheet pile is placed.
項記載の防食被覆鋼矢板。(2) The first claim in which the material of the protective member is FRP
Anti-corrosion coated steel sheet pile as described in Section 1.
第１項記載の防食被覆鋼矢板。(3) The anti-corrosion coated steel sheet pile according to claim 1, wherein the material of the protective member is a corrosion-resistant steel material.
分割して備えた特許請求範囲第１項記載の防食被覆鋼矢
板。(4) The anti-corrosion coated steel sheet pile according to claim 1, wherein the protection member is divided into a plurality of pieces in the width direction of the anti-corrosion coated steel sheet pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62289528A JPH01131731A (en) | 1987-11-18 | 1987-11-18 | Steel sheet pile coated with anti-corrosive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62289528A JPH01131731A (en) | 1987-11-18 | 1987-11-18 | Steel sheet pile coated with anti-corrosive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01131731A true JPH01131731A (en) | 1989-05-24 |
Family
ID=17744418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62289528A Pending JPH01131731A (en) | 1987-11-18 | 1987-11-18 | Steel sheet pile coated with anti-corrosive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01131731A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0705734A1 (en) | 1994-10-03 | 1996-04-10 | Murakami Corporation | An electrochromic antiglare mirror |
| JPH11280097A (en) * | 1998-03-31 | 1999-10-12 | Nkk Corp | Heavy corrosion protective covering retaining device and heavy corrosion protective covering material |
| JPH11280098A (en) * | 1998-03-31 | 1999-10-12 | Nkk Corp | Site repair method for heavy anticorrosive covered steel material |
| JP2000167985A (en) * | 1998-12-04 | 2000-06-20 | Nippon Steel Corp | Heavy corrosionproof coated steel material having edge part fixing high strength coating |
| JP2018084059A (en) * | 2016-11-22 | 2018-05-31 | 新日鐵住金株式会社 | Steel member having protective layer, base structure, manufacturing method for steel member having protective layer, and construction method for base structure |
-
1987
- 1987-11-18 JP JP62289528A patent/JPH01131731A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0705734A1 (en) | 1994-10-03 | 1996-04-10 | Murakami Corporation | An electrochromic antiglare mirror |
| JPH11280097A (en) * | 1998-03-31 | 1999-10-12 | Nkk Corp | Heavy corrosion protective covering retaining device and heavy corrosion protective covering material |
| JPH11280098A (en) * | 1998-03-31 | 1999-10-12 | Nkk Corp | Site repair method for heavy anticorrosive covered steel material |
| JP2000167985A (en) * | 1998-12-04 | 2000-06-20 | Nippon Steel Corp | Heavy corrosionproof coated steel material having edge part fixing high strength coating |
| JP2018084059A (en) * | 2016-11-22 | 2018-05-31 | 新日鐵住金株式会社 | Steel member having protective layer, base structure, manufacturing method for steel member having protective layer, and construction method for base structure |
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