JPH0358408B2 - - Google Patents
Info
- Publication number
- JPH0358408B2 JPH0358408B2 JP8381484A JP8381484A JPH0358408B2 JP H0358408 B2 JPH0358408 B2 JP H0358408B2 JP 8381484 A JP8381484 A JP 8381484A JP 8381484 A JP8381484 A JP 8381484A JP H0358408 B2 JPH0358408 B2 JP H0358408B2
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- steel
- screw body
- protective
- protective sheet
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 73
- 239000010959 steel Substances 0.000 claims description 73
- 238000005260 corrosion Methods 0.000 claims description 48
- 230000001681 protective effect Effects 0.000 claims description 38
- 230000007797 corrosion Effects 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 description 27
- 239000010410 layer Substances 0.000 description 14
- 239000013535 sea water Substances 0.000 description 11
- 239000004264 Petrolatum Substances 0.000 description 9
- 229940066842 petrolatum Drugs 0.000 description 9
- 235000019271 petrolatum Nutrition 0.000 description 9
- 239000011521 glass Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 210000000569 greater omentum Anatomy 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、腐食性環境で使用される形鋼の防食
方法に関する。詳しくは、主として海中に打ち込
んで護岸や岸壁の基礎として用いられる鋼矢板あ
るいは鋼管矢板などの形鋼の海中部、干満帯およ
び飛沫帯の防食方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for protecting steel sections used in corrosive environments. More specifically, the present invention relates to a corrosion protection method for underwater parts, tidal zones, and splash zones of steel sheet piles or steel pipe sheet piles, which are mainly driven into the sea and used as the foundations of seawalls and quays.
従来の技術 1
一般に、海洋環境で用いられる鋼材は、多量の
塩分を含む海水に浸漬され、波浪や潮流に洗われ
るばかりでなく、しぶきを受けたりあるいは海塩
粒子を含む海洋大気にさらされるため腐食損耗を
生じ、長期間の使用の間に穿孔するなどして破壊
するに到る。Conventional technology 1 Generally, steel materials used in the marine environment are not only immersed in seawater containing a large amount of salt and washed by waves and currents, but also exposed to spray or the ocean atmosphere containing sea salt particles. Corrosion and wear occur, leading to perforation and destruction during long-term use.
従来、このような腐食を防止するために種々の
方法が提案されているが、そのひとつとして腐食
の激しい部分にペトロラタム系などの防食材を被
覆し、その外側に繊維強化プラスチツクよりなる
硬質の保護カバーを被覆する方法が知られてい
る。上記の保護カバーは、波力や漂流物の衝突な
ど外部からの衝撃や圧力を受けたときの防食層の
剥離や損傷を防止し、防食層中への海水の浸透や
防食材の海水の中への溶出を阻止するためのもの
である。 In the past, various methods have been proposed to prevent this kind of corrosion, one of which is to coat the severely corroded areas with a corrosion-resistant coating such as petrolatum, and then cover the outside with a hard protective layer made of fiber-reinforced plastic. Methods of applying covers are known. The above-mentioned protective cover prevents peeling and damage of the anti-corrosion layer when subjected to external impact or pressure such as wave force or collision with floating objects, and prevents seawater from penetrating into the anti-corrosion layer and preventing corrosion of the anti-corrosion layer from occurring in seawater. This is to prevent elution to.
発明が解決しようとする問題点 1
しかしながら上記の保護カバーは、外部からの
衝撃や圧力から防食層を保護することには有効で
あつたが、防食層中への海水の浸透や防食材の海
水中への溶出を阻止することは不可能であつた。
すなわち上記保護カバーは、通常、防食対象であ
る形鋼の形状に合わせて製作された成形用型の内
面または外面に、ガラスまたはポリエステルなど
の繊維および液状の硬化樹脂を積層して成形した
ものを使用するが、上記成形用型と形鋼との形状
のわずかな差異は避けられず、また形鋼自体にも
製作上の誤差があり、さらに、繊維に含浸した液
状硬化樹脂の硬化時の収縮などにより、形鋼の形
状に見合つた保護カバーを製作することはきわめ
て困難であるばかりでなく、形鋼の被防食面に被
覆する防食層にも凹凸が生ずることは避けられな
いため、防食層と保護カバーとの間に隙間を生じ
防食層に海水が浸入して防食材の性能を劣化させ
たり、或いは、防食材の内側の形鋼の表面にも海
水が浸透するなどして長期間の防食が達せられな
い問題があつた。Problems to be Solved by the Invention 1 However, although the above-mentioned protective cover was effective in protecting the anti-corrosion layer from external impact and pressure, it did not prevent seawater from penetrating into the anti-corrosion layer or seawater from the anti-corrosion layer. It was not possible to prevent the elution into the inside.
In other words, the above-mentioned protective cover is usually formed by laminating fibers such as glass or polyester and liquid hardened resin on the inner or outer surface of a mold that is manufactured to match the shape of the steel section to be protected against corrosion. However, slight differences in shape between the above-mentioned mold and the shaped steel are unavoidable, and there are manufacturing errors in the shaped steel itself, as well as shrinkage during curing of the liquid hardening resin impregnated into the fibers. Not only is it extremely difficult to manufacture a protective cover that matches the shape of the shaped steel, but it is also inevitable that unevenness will occur in the anticorrosive layer that coats the surface of the shaped steel. A gap may be created between the corrosion protection layer and the protective cover, causing seawater to enter the corrosion protection layer and deteriorating its performance, or seawater may also seep into the surface of the shaped steel inside the corrosion protection layer, resulting in long-term damage. There was a problem that corrosion protection could not be achieved.
従来の技術 2
本願出願人は、上記した保護カバーの問題点を
解消するものとして、繊維強化プラスチツク板の
内側にプラスチツク発泡体などの緩衝材を貼着し
た保護カバーを用いた防食被覆体(実公昭56−
9703号)を提案し、各種形状の鋼材の被覆防食に
実用している。Prior Art 2 In order to solve the above-mentioned problems with the protective cover, the applicant has developed an anti-corrosion covering (actual) using a protective cover in which a cushioning material such as plastic foam is attached to the inside of a fiber-reinforced plastic board. Kosho 56-
No. 9703) and has been put into practical use as a corrosion-protective coating for steel materials of various shapes.
発明が解決しようとする問題点 2
しかしながら上記の緩衝材を貼着した保護カバ
ーは、単体の形鋼や鋼管に被覆した防食層には完
全に密着して防食層中への海水の浸透や防食材の
海水中への溶出を阻止することができるが、単体
の鋼材を連結部で連結して構成される鋼矢板岸壁
や鋼管矢板岸壁の形鋼に被覆した防食層に対して
は、完全に密着して被覆することが困難であり、
防食層と保護カバーとの間に隙間が生じて前記し
たような防食層中へ海水が浸入したり防食材が海
水中へ溶出するなどして長期の防食が不可能とな
るなどの問題が依然として残つていた。この原因
は鋼矢板岸壁や鋼管矢板岸壁が単体の形鋼から構
成されるものではなく複数個の形鋼を連結部で連
結して土中に打ち込んで築造されるものであるこ
とによる。すなわち、土中に打ち込まれるそれぞ
れの形鋼は、打込時の波浪や潮流などの海象条件
や地盤の硬軟などの物理的条件の差異により全体
が一直線上に並ぶように打ち込むことは困難であ
り、おのおのの形鋼は連結部で向きが多少ずつ異
なることになるため、形鋼が連結された全体の壁
体としての断面は到る所で不整な形状を呈するか
らである。Problem to be Solved by the Invention 2 However, the protective cover with the above-mentioned buffer material adheres completely to the anti-corrosion layer coated on a single section steel or steel pipe, preventing seawater from penetrating into the anti-corrosion layer. Although it can prevent food materials from leaching into seawater, it cannot completely protect against the corrosion-protective layer coated on the shaped steel of steel sheet pile quays and steel pipe sheet pile quays, which are constructed by connecting individual steel materials at joints. It is difficult to cover tightly,
There are still problems such as gaps forming between the anti-corrosion layer and the protective cover and seawater infiltrating into the anti-corrosion layer as described above, or the anti-corrosion material leaching into the seawater, making long-term corrosion protection impossible. It remained. This is due to the fact that steel sheet pile quays and steel pipe sheet pile quays are not constructed from a single steel section, but rather are constructed by connecting multiple sections of steel and driving them into the soil. In other words, it is difficult to drive each section of steel into the soil in a straight line due to differences in sea conditions such as waves and currents, and physical conditions such as the hardness and softness of the ground. This is because the orientation of each steel section differs slightly at the connecting portion, so the cross section of the entire wall body in which the section steels are connected exhibits an irregular shape everywhere.
発明の構成
本発明は、防食を適用する場合に生ずる上記の
問題点を改善し、単体の形鋼はもとより、複数個
の形鋼を連結した形状不整な壁体に対しても隙間
なく密着し防食性に優れ、強度・耐久性に富む被
覆層を形成することを目的としてなされたもの
で、その要旨は、形鋼にネジ体を植設し、該ネジ
体の植設された形鋼の表面に防食材を塗布または
貼着した後、液状の硬化樹脂を含浸させた布また
はマツトを不透水性のフイルムで気密に包囲した
保護シートを液状の硬化樹脂の硬化前に上記防食
材に密着して被覆すると共に当て板および締付部
材により締付け固定して被覆層を構成することを
特徴とする防食方法である。Structure of the Invention The present invention improves the above-mentioned problems that occur when applying corrosion protection, and can adhere not only to a single section steel but also to an irregularly shaped wall made of a plurality of section steels connected without any gaps. This was done with the purpose of forming a coating layer with excellent corrosion resistance, strength, and durability.The gist of this method is to implant a threaded body into a shaped steel, and then to remove the threaded body from the shaped steel. After applying or pasting an anti-corrosion coating on the surface, a protective sheet made by airtightly surrounding cloth or pine impregnated with a liquid cured resin with an impermeable film is tightly attached to the anti-corrosion coating before the liquid cured resin hardens. This anti-corrosion method is characterized in that the coating layer is formed by applying a coating and fixing it using a caul plate and a tightening member.
以下、図面を参照しながら本発明の実施例につ
いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
実施例 1
第1図および第2図に示す実施例は本発明の鋼
矢板岸壁に対する実施例であり、第1図は、本発
明を鋼矢板に実施した場合の要部断面図第2図
は、本発明を鋼矢板に実施した場合の斜視図であ
る。また、第3図および第4図は本発明に使用す
る保護シートに関するものであり、第3図は断面
図、第4図は概略説明図である。Embodiment 1 The embodiments shown in FIGS. 1 and 2 are examples of the present invention for a steel sheet pile quay. FIG. 1 is a cross-sectional view of the main part when the present invention is applied to a steel sheet pile. FIG. 2 is a perspective view of the present invention applied to a steel sheet pile. Further, FIGS. 3 and 4 relate to the protective sheet used in the present invention, with FIG. 3 being a sectional view and FIG. 4 being a schematic explanatory view.
第1〜4図において、先ず、防食対象物である
鋼矢板1の凹部に該鋼矢板を防食するための被覆
材を固定し保持するネジ体2を植設する。鋼矢板
1にネジ体2を植設する方法として電気溶接によ
る方法および鋼矢板に穿孔してからタツプネジを
切りネジ体を螺着る方法が用いられる。電気溶接
により植設されるネジ体としては軟鋼よりなるボ
ルトまたはステンレスボルトが用いられる。 In Figs. 1 to 4, first, a screw body 2 for fixing and holding a covering material for corrosion-proofing the steel sheet pile is implanted in a recessed portion of a steel sheet pile 1, which is an object to be protected from corrosion. As a method of implanting the screw body 2 into the steel sheet pile 1, a method using electric welding and a method of drilling a hole in the steel sheet pile and then cutting a tap screw and screwing the screw body are used. A bolt made of mild steel or a stainless steel bolt is used as the screw body implanted by electric welding.
タツプネジに螺着して植設されるネジ体として
は軟鋼製ボルト、ステンレスボルト、真ちゆうボ
ルト、チタンボルトが用いられる。 A mild steel bolt, a stainless steel bolt, a brass bolt, or a titanium bolt is used as the threaded body that is screwed onto the tap screw and implanted.
好ましくは、軟鋼製ボルトまたはステンレスボ
ルトが用いられ電気溶接によつて鋼矢板1に植設
される。 Preferably, mild steel bolts or stainless steel bolts are used and are implanted into the steel sheet pile 1 by electric welding.
次に鋼矢板1の被防食面に防食材3を塗布また
は貼着して被覆する。防食材3は粘着性、不透水
性、電気絶縁性、水中接着性などの防食性を有す
ることであるが、通常ペースト状ペトロラタム系
防食材を塗布するかペトロラタム系防食材を布に
含浸させてテープ状としたペトロラタム系防食テ
ープまたはペトロラタムにゴムを混合してシート
状としたペトロラタム系防食シートを貼着して用
いられる。好ましくは、ペースト状ペトロラタム
系防食材を塗布した外側に前記ペトロラタム系防
食テープまたはペトロラタム防食シートを貼着す
る方法が用いられる。 Next, the corrosion-protective surface of the steel sheet pile 1 is coated with or affixed with the corrosion-proofing material 3. The anti-corrosion material 3 is to have anti-corrosion properties such as adhesiveness, impermeability, electrical insulation, underwater adhesion, etc., and is usually applied by applying a petrolatum-based anti-corrosion paste or impregnating cloth with a petrolatum-based anti-corrosion material. It is used by pasting a petrolatum-based anticorrosive tape in the form of a tape or a petrolatum-based anticorrosive sheet made by mixing petrolatum with rubber. Preferably, a method is used in which the petrolatum anticorrosion tape or the petrolatum anticorrosion sheet is attached to the outside coated with the paste petrolatum anticorrosion tape.
また3の防食材には上記のほかゴム系の貼着材
あるいはエポキシ系防食材を用いることもでき
る。 In addition to the above, a rubber-based adhesive or an epoxy-based corrosion-proofing material can also be used as the corrosion-proofing material in step 3.
上記のごとくして鋼矢板1の被防食面に防食材
3を被覆した後、該防食材の外側に保護シート4
を被覆する。保護シート4は液状の硬化樹脂を布
またはマツト4aに含浸させ該布またはマツトの
周囲を不透水性フイルム4bで気密に包囲してか
ら前記鋼矢板1に植設されたネジ体2の貫通用透
孔4cに設けたものである。保護シート4に使用
される布4aとしては通常、ガラスクロスが用い
られる。また、マツト4aにはガラスチヨツプド
ストランドマツトあるいはポリエステル不織布が
用いられる。好ましくは、ガラスチヨツプドスト
ランドマツトまたはガラスチヨツプドストランド
マツトとガラスクロスを交互に積層して用いられ
る。上記布またはマツト4aに含浸させる液状の
硬化樹脂は無溶材型の樹脂であることが望まし
く、通常、エポキシ樹脂およびその硬化剤が用い
られる。液状の硬化樹脂を含浸させた布またはマ
ツト4aに被覆してこれを気密に包囲する不透水
性フイルム4bには塩化ビニールフイルムやポリ
エチレンフイルムなどの合成樹脂フイルムが用い
られる。上記のごとくとして構成された保護シー
ト4には、前記鋼矢板1に植設されたネジ体2の
貫通用透孔4cを設けるが、該透孔4cの周囲に
は、気密性を保持するための粘着テープ4dを貼
着する。上記の透孔の周囲を気密に保持する方法
としてはこの他に、該透孔4cの穿設される周辺
または適宜の範囲にわたりあらかじめ液状の硬化
樹脂を含浸して硬化させた後、穿孔することもで
きる。 After coating the corrosion-protected surface of the steel sheet pile 1 with the corrosion-proofing material 3 as described above, a protective sheet 4 is placed on the outside of the corrosion-proofing material.
Cover. The protective sheet 4 is made by impregnating a cloth or mat 4a with liquid cured resin, airtightly surrounding the cloth or mat with a water-impermeable film 4b, and then passing the screw body 2 installed in the steel sheet pile 1 through the protective sheet 4. It is provided in the through hole 4c. As the cloth 4a used for the protective sheet 4, glass cloth is usually used. Further, a glass chopped strand mat or a polyester nonwoven fabric is used for the mat 4a. Preferably, glass chopped strand mats or glass chopped strand mats and glass cloth are laminated alternately. The liquid cured resin with which the cloth or mat 4a is impregnated is desirably a solvent-free resin, and epoxy resin and its curing agent are usually used. A synthetic resin film such as a vinyl chloride film or a polyethylene film is used as the water-impermeable film 4b, which is coated on a cloth impregnated with a liquid cured resin or on the mat 4a to airtightly surround it. The protective sheet 4 configured as described above is provided with a through hole 4c for passing through the screw body 2 implanted in the steel sheet pile 1, and the area around the through hole 4c is provided to maintain airtightness. Attach adhesive tape 4d. Another method for keeping the area around the hole 4c airtight is to pre-impregnate the area around the hole 4c or an appropriate area with a liquid cured resin and harden it, and then drill the hole. You can also do it.
保護シート4は、布またはマツト4aに含浸さ
せた液状の硬化樹脂が硬化反応を開始する前に該
保護シート4に穿設された透孔4cを前記ネジ体
2が貫通するようにして鋼矢板1に被覆された防
食材3の外側に密着させて被覆する。 The protective sheet 4 is made of steel sheet piles in such a way that the threaded bodies 2 pass through holes 4c formed in the protective sheet 4 before the liquid hardening resin impregnated into the cloth or mat 4a starts a hardening reaction. The anticorrosive material 3 covered with the anti-corrosion material 3 is closely coated on the outside thereof.
次に、ネジ体2の植設された近傍の鋼矢板1の
形状に重合するように成形され、かつ前記ネジ体
2の貫通用透孔を有する当て板5を前記ネジ体2
が貫通するごとく取付け、鋼矢板1の形状に重合
するようにして保護シート4に押し当てた後、締
付部材6および7を前記ネジ体2に螺着して締付
け固定する。ネジ体2には腐食防止するための合
成樹脂キヤツプ8を螺着する。 Next, a patch plate 5 that is formed so as to overlap the shape of the steel sheet pile 1 in the vicinity of where the screw body 2 is installed and has a through hole for penetrating the screw body 2 is attached to the screw body 2.
The screws 6 and 7 are screwed onto the threaded bodies 2 and fixed by tightening. A synthetic resin cap 8 is screwed onto the screw body 2 to prevent corrosion.
上記のごとく、鋼矢板1の被防食側にネジ体2
を植設した後防食材3を被覆し、その外側に保護
シート4を保護シート4の構成基材である布また
はマツト4aに含浸した液状硬化樹脂が硬化しな
い間に鋼矢板1の表面に被覆した防食材3の外側
に密着して被覆するから鋼矢板1と防食材3およ
び保護シート4の間に隙間を生ずることなく一体
化して被覆することができる。また保護シート4
は、ネジ体2近傍の鋼矢板の形状に重合するよう
に成形された当て板5を介して締付部材6および
7により締付け固定されるばかりでなく、保護シ
ート4の布またはマツト4aに含浸した液状の硬
化樹脂が一定時間経過後硬化する過程で生ずる樹
脂の収縮によつて防食材3は鋼矢板1の表面に強
く押しつけられて密着することになる。当て板5
はそのまま取付けておくが保護シート4の硬化後
に取外してもよい。当て板5を取外す場合は、硬
化した保護シート4から外部に突出したネジ体2
に締付部材6および7を螺着して締付け固定す
る。 As mentioned above, the screw body 2 is attached to the corrosion-protected side of the steel sheet pile 1.
After planting, the anticorrosive material 3 is covered, and the surface of the steel sheet pile 1 is coated with a protective sheet 4 while the liquid hardening resin impregnated into the cloth or mat 4a, which is the base material of the protective sheet 4, is not hardened. Since the steel sheet pile 1, the corrosion-proofing material 3, and the protective sheet 4 are coated in close contact with the outside of the corrosion-proofing material 3, the steel sheet pile 1, the corrosion-proofing material 3, and the protective sheet 4 can be integrally coated without creating any gaps. Also protective sheet 4
is not only tightened and fixed by the tightening members 6 and 7 via the patch plate 5 formed so as to overlap with the shape of the steel sheet pile near the screw body 2, but also impregnated into the cloth or mat 4a of the protective sheet 4. The corrosion-proofing material 3 is strongly pressed against the surface of the steel sheet pile 1 due to the shrinkage of the resin that occurs during the process of hardening the liquid cured resin after a certain period of time has elapsed. Backing plate 5
Although the protective sheet 4 may be attached as is, it may be removed after the protective sheet 4 has hardened. When removing the backing plate 5, remove the screw body 2 protruding from the hardened protective sheet 4.
The fastening members 6 and 7 are screwed onto and tightened and fixed.
防食材3は鋼矢板1の表面に直接被覆しても良
いが、保護シート4の片面に塗布または貼着して
上記保護シート共に鋼矢板1の表面に被覆するこ
ともできる。 The corrosion-proofing material 3 may be directly coated on the surface of the steel sheet pile 1, but it is also possible to apply or adhere it to one side of the protective sheet 4 so that the surface of the steel sheet pile 1 is coated with the protective sheet.
実施例 2
第5図は、および第6図は、鋼管矢板9よりな
る壁体に本発明を実施した例を示したものであ
る。第5図は断面図、第6図は正面図である。鋼
管矢板9よりなる壁体は鋼管に設けた継手部10
により接続して壁体が構成するが、その全外周を
防食することが望ましい。このような鋼管矢板に
よつて構成される壁体の防食方法も前記鋼矢板の
場合と同様であつて、第1図および第2図と同一
部所には同一番号を付している。Embodiment 2 FIGS. 5 and 6 show an example in which the present invention is applied to a wall made of steel pipe sheet piles 9. FIG. 5 is a sectional view, and FIG. 6 is a front view. The wall body made of steel pipe sheet pile 9 is a joint part 10 provided on the steel pipe.
It is desirable to protect the entire outer periphery of the wall from corrosion. The method for preventing corrosion of a wall constructed of such steel pipe sheet piles is the same as that for the steel sheet piles described above, and the same parts as in FIGS. 1 and 2 are given the same numbers.
実施例 3
第7図および第8図は本発明をH形鋼11に実
施した例を示したものである。第7図は断面図、
第8図は斜視図である。H形鋼に対しても全外周
を防食することが望ましく防食方法も前記鋼矢板
の場合と同様であつて第1図および第2図と同一
部所には同一番号を付している。Example 3 FIGS. 7 and 8 show an example in which the present invention is applied to an H-section steel 11. Figure 7 is a cross-sectional view;
FIG. 8 is a perspective view. It is desirable to protect the entire outer periphery of H-beam steel, and the corrosion protection method is the same as that for the steel sheet piles, and the same parts as in FIGS. 1 and 2 are given the same numbers.
発明の効果
以上詳述したように、本発明によれば防食材を
塗布または貼着した外側に、防食施工時に軟質で
ある保護シートを被覆するから形鋼に密着して被
覆することができ、また、連結した複数の形鋼の
向きが異なるなどの形状不整部に対しても十分に
密着して被覆することができる。さらに、上記保
護シートは一定時間経過後硬化して強度を増すか
ら保護材として十分な強度を有するようになり防
食材を強固に保護することができる。その上、防
食材と保護シートとは形鋼に植設したネジ体と該
ネジ体に螺着した締付部材とによつて締付け固定
されているから、脱落することがなく長期の防食
が可能となる。また、上記防食材は水中で塗布ま
たは貼着可能なものであると共に上記保護シート
が不透水性のフイルムで水密に包囲されているか
ら本発明は水中の形鋼に対してきわめて容易に実
施できるものである。Effects of the Invention As detailed above, according to the present invention, a soft protective sheet is coated on the outside of the coated or pasted anti-corrosion sheet during anti-corrosion construction, so that it can be coated in close contact with the shaped steel. Furthermore, it is possible to cover irregularly shaped portions such as those where a plurality of connected steel sections are oriented in different directions with sufficient adhesion. Furthermore, since the protective sheet hardens and increases its strength after a certain period of time has elapsed, it has sufficient strength as a protective material and can strongly protect the anti-corrosion material. Furthermore, the corrosion protection sheet and the protective sheet are tightened and fixed by a screw body embedded in the shaped steel and a tightening member screwed onto the screw body, so they will not fall off and can provide long-term corrosion protection. becomes. Furthermore, since the corrosion-proofing material can be applied or attached underwater, and the protective sheet is watertightly surrounded by an impermeable film, the present invention can be applied to shaped steel sections in water very easily. It is something.
上記したように本発明は形鋼の防食に寄与する
ところきわめて大である。 As described above, the present invention greatly contributes to the corrosion protection of section steel.
第1図、第2図は鋼矢板に対する本発明の実施
例、第3図、第4図は本発明に使用する保護シー
トの断面図および概略説明図、第5図、第6図は
鋼管矢板に対する本発明の実施例であり第7図、
第8図はH形鋼に対する本発明の実施例である。
1……鋼矢板、2……ネジ体、3……防食材、
4……保護シート、4a……布またはマツト、4
b……不透水性フイルム、4c……透孔、4d…
…粘着テープ、5……当て板、9……鋼管矢板、
10……鋼管矢板の継手部、11……H形鋼。
Figures 1 and 2 are examples of the present invention for steel sheet piles, Figures 3 and 4 are cross-sectional views and schematic illustrations of protective sheets used in the present invention, and Figures 5 and 6 are steel pipe sheet piles. FIG. 7 is an embodiment of the present invention for
FIG. 8 shows an embodiment of the present invention for H-beam steel. 1...Steel sheet pile, 2...Screw body, 3...Anti-corrosion,
4...protective sheet, 4a...cloth or matte, 4
b...Water-impermeable film, 4c...Through hole, 4d...
...Adhesive tape, 5...Packing plate, 9...Steel pipe sheet pile,
10...Joint part of steel pipe sheet pile, 11...H section steel.
Claims (1)
し、該防食材の外側に、液状の硬化樹脂を含浸さ
せた布またはマツトを不透水性フイルムで気密に
包囲し、かつ前記ネジ体の貫通用透孔を設けた保
護シートを液状の硬化樹脂の硬化前にネジ体が前
記透孔を貫通するごとくして被着した後、前記ネ
ジ体の植設された近傍の形鋼の形状に重合するご
とく成形され前記ネジ体の透孔を有する硬質の当
て板を前記ネジ体が透孔を貫通するごとくして前
記保護シートの外側に押し当て該当て板の外方に
突出した前記ネジ体およびこれに螺着された締付
部材によつて締め付け固定することを特徴とする
形鋼の防食方法。1. The surface of the shaped steel in which the threaded body is implanted is coated with corrosion protection, and the outside of the corrosion protection is airtightly surrounded with a cloth or mat impregnated with liquid hardened resin with an impermeable film, and the screw body is After applying a protective sheet with through-holes for the body so that the threaded body passes through the through-hole before the liquid hardening resin hardens, the section steel in the vicinity of where the threaded body is implanted is attached. A hard backing plate that is molded to overlap the shape and has a through hole for the screw body is pressed against the outside of the protective sheet so that the screw body penetrates the through hole, and the hard plate protrudes outward from the plate. A method for preventing corrosion of shaped steel, characterized by tightening and fixing using a screw body and a tightening member screwed onto the screw body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8381484A JPS60230435A (en) | 1984-04-27 | 1984-04-27 | Corrosionproofing method of shape steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8381484A JPS60230435A (en) | 1984-04-27 | 1984-04-27 | Corrosionproofing method of shape steel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60230435A JPS60230435A (en) | 1985-11-15 |
JPH0358408B2 true JPH0358408B2 (en) | 1991-09-05 |
Family
ID=13813145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8381484A Granted JPS60230435A (en) | 1984-04-27 | 1984-04-27 | Corrosionproofing method of shape steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60230435A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8903081D0 (en) * | 1989-02-10 | 1989-03-30 | Nicc Limited | Improvements relating to pile protection systems |
JP3649833B2 (en) * | 1997-01-14 | 2005-05-18 | 新日本製鐵株式会社 | Method for reinforcing anti-corrosion coating on steel |
JP6489741B2 (en) * | 2014-01-24 | 2019-03-27 | 新日鐵住金株式会社 | Wall structure |
-
1984
- 1984-04-27 JP JP8381484A patent/JPS60230435A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60230435A (en) | 1985-11-15 |
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