JP2017043833A - Energization device and energization method for steel structure - Google Patents

Energization device and energization method for steel structure Download PDF

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JP2017043833A
JP2017043833A JP2016035519A JP2016035519A JP2017043833A JP 2017043833 A JP2017043833 A JP 2017043833A JP 2016035519 A JP2016035519 A JP 2016035519A JP 2016035519 A JP2016035519 A JP 2016035519A JP 2017043833 A JP2017043833 A JP 2017043833A
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steel structure
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達志 岩本
Tatsushi Iwamoto
達志 岩本
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Abstract

PROBLEM TO BE SOLVED: To provide an energization device and an energization method for s steel structure suppressing the corrosion of a connection part upon energization and increasing the durability of the device.SOLUTION: Provided is an energization device for a steel structure where a steel structure 1 arranged at marine or brackish water is energized from an anode 7 in water, comprising: a power source 2 installed in the steel structure 1 or on the land; the anode 7 connected to the power source 2 via an electric wire 5 and also arranged in water; and an arrangement part 14 arranging the anode 7 so as to be confronted with the steel structure 1, and the arrangement part 14 includes: extension member extended from the upper part into the water; and the lower member arranged at the lower part of the extension member via a connection part 12 and also conductively connected to the steel structure 1.SELECTED DRAWING: Figure 1

Description

本発明は、海洋又は汽水に配置した鋼構造物に対して適用する鋼構造物の通電装置及び通電方法に関するものである。   The present invention relates to a steel structure energization device and a method for energization applied to a steel structure disposed in the ocean or brackish water.

一般に、護岸等に設けられる鋼矢板、橋梁や桟橋等に設けられる鋼管杭、或いはコンクリート構造物の表面を鉄鋼部材で被覆した鋼ケーソン等の鋼構造物は、その一部が海洋又は汽水に水没した状態で設けられており、非常に錆が発生し易い環境に晒されている。このため、鋼構造物を長期間使用した場合には、錆の発生による減肉に対応するように補強工事或いは取替工事等を行う必要があり、多大な工事費用が掛かっていた。   In general, steel sheet piles provided on revetments, steel pipe piles provided on bridges and piers, etc., or steel structures such as steel caissons whose surface is covered with steel members, are partially submerged in the ocean or brackish water. And is exposed to an environment where rust is likely to occur. For this reason, when a steel structure is used for a long period of time, it is necessary to perform reinforcement work or replacement work so as to cope with the thinning due to the occurrence of rust.

近年、鋼構造物の減肉を防止する手法として鋼構造物に電着被膜を形成することが考えられている。鋼構造物に電着被膜を形成する際には、鋼構造物の海洋又は汽水に水没した水没部に対し所要の間隔をあけて陽極を配置し、該陽極と鋼構造物との間に電源を設けて直流電流を通電するようにしている。これにより、水中のカルシウムイオン(Ca2+)やマグネシウムイオン(Mg2+)等の陽イオンが、陰極としての鋼構造物へ向かって水中を泳動し、鋼構造物において電子を得ることとなり、鋼構造物の水没部表面に、CaCO及びMg(OH)等の電着被膜(エレクトロコーティング層)を形成し、鋼構造物の減肉を防止するようにしている。 In recent years, it has been considered that an electrodeposition film is formed on a steel structure as a technique for preventing the thinning of the steel structure. When an electrodeposition coating is formed on a steel structure, an anode is arranged at a predetermined interval with respect to the submerged part of the steel structure submerged in the ocean or brackish water, and a power source is provided between the anode and the steel structure. So that a direct current is applied. As a result, cations such as calcium ions (Ca 2+ ) and magnesium ions (Mg 2+ ) in water migrate in water toward the steel structure as a cathode to obtain electrons in the steel structure. An electrodeposition coating (electrocoating layer) such as CaCO 3 and Mg (OH) 2 is formed on the surface of the submerged portion of the object to prevent the steel structure from being thinned.

又、鋼構造物に電着被膜を形成する装置では、上方から水中へ上下方向に延在するワイヤ等の紐状部材と、紐状部材に鉛直方向へ張力を付与する錘部等の下方部材とを用いて陽極を固定し、陽極を水中に安定的に配置するようにしている。更に紐状部材と下方部材は、接続部を介して接続されており、接続部は、下方部材の荷重に耐え得るように強度の高い金属金具になっている。   In addition, in an apparatus for forming an electrodeposition coating on a steel structure, a string-like member such as a wire extending vertically from above to underwater, and a lower member such as a weight portion for applying a tension to the string-like member in the vertical direction And the anode is fixed so that the anode is stably placed in water. Furthermore, the string-like member and the lower member are connected via a connecting portion, and the connecting portion is a metal fitting having high strength so as to withstand the load of the lower member.

尚、前述の如き鋼構造物に電着被膜を形成する方法と関連する一般的技術水準を示すものとしては、例えば、特許文献1がある。   For example, Patent Document 1 shows a general technical level related to a method of forming an electrodeposition coating on a steel structure as described above.

特開平10−313728号公報JP-A-10-313728

しかしながら、紐状部材と下方部材を接続する金属金具の接続部には、通電時に迷走電流を生じて接続部に腐食を生じ、装置の耐久性が低下するという問題があった。   However, the connecting portion of the metal fitting that connects the string-like member and the lower member has a problem that stray current is generated during energization, corrosion occurs in the connecting portion, and the durability of the apparatus is lowered.

本発明は、斯かる実情に鑑み、通電時における接続部の腐食を抑制し、装置の耐久性を高める、鋼構造物の通電装置及び通電方法を提供しようとするものである。   In view of such circumstances, the present invention is intended to provide a current-carrying device and a current-carrying method for a steel structure that suppress corrosion of a connection portion during current supply and increase the durability of the device.

本発明の鋼構造物の通電装置は、海洋又は汽水に配置した鋼構造物に対し、水中で陽極から通電する鋼構造物の通電装置であって、
前記鋼構造物又は陸上に設置される電源と、該電源に電線を介して接続され且つ水中に配置される陽極と、該陽極を鋼構造物に対向して配置する配置部とを備え、
前記配置部は、上方から水中へ延在する延在部材と、該延在部材の下部に接続部を介して配置され且つ鋼構造物と導通可能に接続される下方部材とを備えたものである。
The steel structure energization apparatus of the present invention is a steel structure energization apparatus for energizing from an anode in water to a steel structure arranged in the ocean or brackish water,
A power source installed on the steel structure or on land, an anode connected to the power source via an electric wire and disposed in water, and a disposing portion for disposing the anode facing the steel structure,
The arrangement portion includes an extending member extending from above to underwater, and a lower member arranged at a lower portion of the extending member via a connection portion and connected to a steel structure so as to be conductive. is there.

又、本発明の鋼構造物の通電装置において、前記配置部の延在部材は、上下方向へ延在する紐状部材であると共に、前記配置部の下方部材は、紐状部材に張力を付与する錘部であり、前記陽極は、紐状部材と錘部の少なくとも一方に支持される構成であることが好ましい。   Moreover, in the current-carrying device for a steel structure according to the present invention, the extending member of the arrangement portion is a string-like member extending in the vertical direction, and the lower member of the arrangement portion applies tension to the string-like member. Preferably, the anode is configured to be supported by at least one of a string-like member and a weight portion.

又、本発明の鋼構造物の通電装置において、前記配置部の延在部材は、上下方向へ延在する紐状部材であると共に、前記配置部の下方部材は、鋼構造物から張り出すように形成され且つ紐状部材の下方を支持する下方張出材であり、前記陽極は、紐状部材と下方張出材の少なくとも一方に支持される構成であることが好ましい。   In the steel structure energization apparatus according to the present invention, the extending member of the arrangement portion is a string-like member extending in the vertical direction, and the lower member of the arrangement portion is projected from the steel structure. It is preferable that it is a downward extension material which is formed in and supports the lower part of the string-like member, and the anode is supported by at least one of the string-like member and the downward extension material.

又、本発明の鋼構造物の通電装置において、前記配置部の延在部材は、上下方向へ延在して陽極を固定する固定部材であると共に、前記配置部の下方部材は、鋼構造物から張り出すように形成され且つ固定部材の下方を支持する下方張出材であることが好ましい。   In the steel structure energization apparatus according to the present invention, the extending member of the arrangement portion is a fixing member that extends in the vertical direction and fixes the anode, and the lower member of the arrangement portion is a steel structure. It is preferable that the lower projecting material is formed so as to project from the bottom and supports the lower part of the fixing member.

又、本発明の鋼構造物の通電装置において、前記固定部材と前記陽極の間には、絶縁部を介在させることが好ましい。   In the current-carrying device for a steel structure according to the present invention, it is preferable that an insulating portion is interposed between the fixing member and the anode.

又、本発明の鋼構造物の通電装置において、前記接続部は、金属部材であることが好ましい。   Moreover, in the current-carrying apparatus for a steel structure according to the present invention, it is preferable that the connecting portion is a metal member.

又、本発明の鋼構造物の通電装置において、前記配置部の下方部材と前記鋼構造物の接続は、締結、掛止、載置、溶接のうち少なくとも1つであることが好ましい。   In the steel structure energization apparatus of the present invention, it is preferable that the connection between the lower member of the arrangement portion and the steel structure is at least one of fastening, latching, placing, and welding.

又、本発明の鋼構造物の通電装置において、前記配置部の下方部材と前記鋼構造物の接続は、配線を介するものであることが好ましい。   In the steel structure energization apparatus of the present invention, it is preferable that the lower member of the arrangement portion and the steel structure are connected via a wiring.

本発明の鋼構造物の通電方法は、海洋又は汽水に配置した鋼構造物に対し、水中で陽極から通電する鋼構造物の通電方法であって、
前記陽極を鋼構造物に対向して配置するように、上方から水中へ延在する延在部材と、該延在部材の下部に接続部を介して配置され且つ鋼構造物と導通可能に接続される下方部材とを備え、
前記陽極へ通電した際には、鋼構造物と下方部材を導通して接続部に電着被膜の形成又は電気防食を行うものである。
The method for energizing a steel structure of the present invention is a method for energizing a steel structure that is energized from an anode in water with respect to a steel structure disposed in the ocean or brackish water,
An extending member extending from above to underwater so as to be disposed opposite to the steel structure, and the anode is disposed at a lower portion of the extending member via a connecting portion and connected to the steel structure so as to be conductive. A lower member to be provided,
When the anode is energized, the steel structure and the lower member are conducted to form an electrodeposited film or cathodic protection on the connecting portion.

又、本発明の鋼構造物の通電方法において、前記下方部材を、前記鋼構造物に締結、掛止、載置、溶接のうち少なくとも1つで接続することが好ましい。   In the method for energizing a steel structure of the present invention, it is preferable that the lower member is connected to the steel structure by at least one of fastening, latching, placing, and welding.

又、本発明の鋼構造物の通電方法において、前記下方部材を、前記鋼構造物に配線を介して接続することが好ましい。   In the method for energizing a steel structure according to the present invention, it is preferable that the lower member is connected to the steel structure via a wiring.

又、本発明の鋼構造物の通電方法において、前記下方部材を前記鋼構造物に配線を介して接続した後、前記下方部材を海洋又は汽水に沈めることが好ましい。   In the method for energizing a steel structure according to the present invention, it is preferable that the lower member is submerged in the ocean or brackish water after the lower member is connected to the steel structure via a wiring.

本発明の鋼構造物の通電装置及び通電方法によれば、通電時における接続部の腐食を抑制し、装置の耐久性を高めるという優れた効果を奏し得る。   According to the current-carrying device and current-carrying method for a steel structure of the present invention, it is possible to achieve excellent effects of suppressing corrosion of the connection portion during current-carrying and increasing the durability of the device.

本発明の鋼構造物の通電装置及び通電方法の第一例であって通電可能な構成を示す概念側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual side view which is the 1st example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows the structure which can be supplied with electricity. 本発明の鋼構造物の通電装置及び通電方法の第一例であって巻上可能な構成を示す概念側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual side view which shows the structure which can be rolled up, and is the 1st example of the electricity supply apparatus and electricity supply method of the steel structure of this invention. 図2をIII−III方向から見た矢視図である。It is the arrow line view which looked at FIG. 2 from the III-III direction. 本発明の鋼構造物の通電装置及び通電方法の第一例であって陽極の他の支持構造を示す概念正面図である。It is a conceptual front view which is the 1st example of the electricity supply apparatus and the electricity supply method of the steel structure of this invention, and shows the other support structure of an anode. 本発明の鋼構造物の通電装置及び通電方法の第一例であって陽極の別の支持構造を示す概念正面図である。It is a conceptual front view which is the 1st example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows another support structure of an anode. 紐状部材と錘部を接続する接続部の構成を示す概念図である。It is a conceptual diagram which shows the structure of the connection part which connects a string-shaped member and a weight part. 本発明の鋼構造物の通電装置及び通電方法の第一例であって通電するための処理手順を示すフローである。It is a flow which shows the process sequence for it being a 1st example of the electricity supply apparatus and the electricity supply method of the steel structure of this invention, and supplying with electricity. 本発明の鋼構造物の通電装置及び通電方法の第一例であって下方部材と鋼構造物の接続構造を示す概念側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual side view which is a 1st example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows the connection structure of a lower member and a steel structure. 本発明の鋼構造物の通電装置及び通電方法の第一例であって下方部材と鋼構造物の他の接続構造を示す概念側面図である。It is a conceptual side view which is the 1st example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows the other connection structure of a lower member and a steel structure. 図9をX−X方向から見た矢視図である。It is the arrow line view which looked at FIG. 9 from XX direction. 本発明の鋼構造物の通電装置及び通電方法の第二例であって通電可能な構成を示す概念側面図である。It is a conceptual side view which is the 2nd example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows the structure which can be supplied with electricity. 本発明の鋼構造物の通電装置及び通電方法の第二例であって通電するための処理手順を示すフローである。It is a flow which is the 2nd example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows the process sequence for supplying with electricity. 本発明の鋼構造物の通電装置及び通電方法の第三例であって通電可能な構成を示す概念側面図である。It is a conceptual side view which is the 3rd example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows the structure which can be supplied with electricity. (a)は陽極を固定部材に絶縁状態で固定する構成を示す一例であり、(b)は陽極を固定部材に絶縁状態で固定する構成を示す他例である。(A) is an example which shows the structure which fixes an anode to a fixing member in an insulated state, (b) is another example which shows the structure which fixes an anode to a fixing member in an insulated state. 本発明の鋼構造物の通電装置及び通電方法の第三例であって通電するための処理手順を示すフローである。It is a flow which is the 3rd example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows the process sequence for supplying with electricity. 本発明の鋼構造物の通電装置及び通電方法の第四例であって通電可能な構成を示す概念側面図である。It is a conceptual side view which shows the structure which can be electrically supplied as a 4th example of the electricity supply apparatus and electricity supply method of the steel structure of this invention. 本発明の鋼構造物の通電装置及び通電方法の第四例であって下方部材と鋼構造物の接続構造を示す概念側面図である。It is a conceptual side view which is a 4th example of the electricity supply apparatus and electricity supply method of the steel structure of this invention, and shows the connection structure of a lower member and a steel structure. 本発明の鋼構造物の通電装置及び通電方法の第四例であって通電するための処理手順を示すフローである。It is a flow which is the 4th example of the energization apparatus and energization method of the steel structure of this invention, and shows the process sequence for energizing.

以下、本発明を実施する形態の第一例を図1〜図10を参照して説明する。   Hereinafter, a first example of an embodiment for carrying out the present invention will be described with reference to FIGS.

実施の形態の第一例に示す鋼構造物の通電装置及び通電方法は、海洋又は汽水(汽水域)に配置した鋼構造物1に対し、仮設の装置及び方法として適用されるものである。鋼構造物1は、護岸等に設けられる鋼矢板、橋梁や桟橋等に設けられる鋼管杭、コンクリート構造物の表面を鉄鋼部材で被覆した鋼ケーソン等であり、一部が海洋や汽水に水没するならば特に制限されるものではない。   The energizing apparatus and energizing method for a steel structure shown in the first example of the embodiment are applied as a temporary apparatus and method to the steel structure 1 arranged in the ocean or brackish water (brake water area). The steel structure 1 is a steel sheet pile provided on a seawall, a steel pipe pile provided on a bridge or a pier, a steel caisson having a surface of a concrete structure covered with a steel member, and a part thereof is submerged in the ocean or brackish water. If so, there is no particular limitation.

第一例の鋼構造物の通電装置は、図1に示す如く鋼構造物1の上面又は陸上に電源2を設置し、鋼構造物1の上面端側には、水面の上方に張り出すフレーム状の張出架台3を備えている。電源2は、張出架台3上のガイドシーブ4を介して水中へ延在するメイン側の電線5を備えていると共に、ガイド材(図示せず)を介して下方へ延在するアース側の電線6を備えている。メイン側の電線5は、水中に配する複数の陽極7に接続されており、アース側の電線6は、鋼構造物1に取り付けられたアース用部材8に接続されている。ここで陽極7は、複数個(図1では四個)でも良いし、一個でも良いし、個数や形状について特に限定されるものではない。   In the first example of the steel structure energizing apparatus, a power source 2 is installed on the upper surface of the steel structure 1 or on land as shown in FIG. 1, and a frame projecting above the water surface on the upper end side of the steel structure 1. In this way, a projecting stand 3 is provided. The power source 2 includes a main-side electric wire 5 that extends into the water via a guide sheave 4 on the overhang base 3 and a ground-side electric wire that extends downward via a guide material (not shown). An electric wire 6 is provided. The main-side electric wire 5 is connected to a plurality of anodes 7 arranged in water, and the ground-side electric wire 6 is connected to a grounding member 8 attached to the steel structure 1. Here, the anode 7 may be plural (four in FIG. 1) or one, and the number and shape are not particularly limited.

鋼構造物1上で張出架台3の近傍には、図2に示す如くウインチ9を備えており、ウインチ9には、ロープやワイヤ等の紐状部材(延在部材)11が巻き取られている。紐状部材11は、ウインチ9からの繰り出しにより、張出架台3上のガイドシーブ10を介して上方から水中へ延在するようになっている。又、紐状部材11の下端には、接続部12を介して錘部(下方部材)13を接続している。更に紐状部材11及び錘部13は、陽極7を安定的に配置する配置部14として構成され、陽極7が、鋼構造物1の水没部1aに対向し且つ所要の間隔をあけて配置されるようになっている。   A winch 9 is provided in the vicinity of the overhanging base 3 on the steel structure 1 as shown in FIG. 2, and a string-like member (extending member) 11 such as a rope or a wire is wound around the winch 9. ing. The string-like member 11 extends from the upper side to the water via the guide sheave 10 on the overhanging stand 3 by being fed out from the winch 9. In addition, a weight portion (downward member) 13 is connected to the lower end of the string-like member 11 via a connection portion 12. Furthermore, the string-like member 11 and the weight part 13 are configured as an arrangement part 14 for stably arranging the anode 7, and the anode 7 is arranged opposite to the submerged part 1 a of the steel structure 1 and at a predetermined interval. It has become so.

ロープやワイヤ等の紐状部材11は、電線5及び陽極7の両側に位置するように複数本(図3では二本)配置されており、紐状部材11の中途位置では、陽極7の両側を支持している。ここで紐状部材11は、図3に示す如く横方向に形成される陽極7の両側を支持しても良いし、図4に示す如くロープやワイヤ等の他の紐状部材11aを別途用いて、縦方向に形成される陽極7の両側を支持しても良い。又、紐状部材11と陽極7の支持構造は、締結、溶接、係止、固定等、特に制限されるものではない。更に紐状部材11は、陽極7を安定的に支持し得るならば、複数本でも良いし、一本でも良い。   A plurality of string-like members 11 such as ropes and wires are arranged (two in FIG. 3) so as to be located on both sides of the electric wire 5 and the anode 7. Support. Here, the string-like member 11 may support both sides of the anode 7 formed in the lateral direction as shown in FIG. 3, or another string-like member 11a such as a rope or a wire is used separately as shown in FIG. Thus, both sides of the anode 7 formed in the vertical direction may be supported. Further, the support structure of the string-like member 11 and the anode 7 is not particularly limited, such as fastening, welding, locking, and fixing. Further, the string-like member 11 may be plural or one as long as it can stably support the anode 7.

錘部13は、所定長さを有する重量物であって海洋や汽水の底部に配置するようになっていると共に、紐状部材11に鉛直方向へ張力を付与している。又、錘部13は、錘部13又は鋼構造物1に形成された突起、導電性のロッド部材や紐状部材を用いて鋼構造物1に接続可能になっている。又、錘部13には、陽極7を紐状部材11で支持する代わりに、図5に示す如く陽極7の電線5等を接続し、陽極7を錘部13で支持するようにしても良い。   The weight portion 13 is a heavy object having a predetermined length and is arranged at the bottom of the ocean or brackish water, and applies tension to the string-like member 11 in the vertical direction. Further, the weight portion 13 can be connected to the steel structure 1 using a protrusion formed on the weight portion 13 or the steel structure 1, a conductive rod member, or a string-like member. Further, instead of supporting the anode 7 with the string-like member 11, the electric wire 5 of the anode 7 or the like may be connected to the weight portion 13 as shown in FIG. 5 and the anode 7 may be supported by the weight portion 13. .

接続部12は、図6に示す如く、紐状部材11の下部に配置された滑車15に、複数本のワイヤもしくはスリング16を介して取付金具17を備えており、取付金具17を、錘部13に形成された吊りピース18に締結することにより、紐状部材11と錘部13を連結している。又、滑車15、ワイヤもしくはスリング16、取付金具17、吊りピース18は、金属部材であり、各部材の金属面に、絶縁塗料の塗装や絶縁テープの巻き付けを行い、可能な限り絶縁するようにしている。ここで接続部12は、紐状部材11と錘部13を金属部材で接続するならば、滑車15等に制限されるものでなく、他の部品であっても良い。   As shown in FIG. 6, the connecting portion 12 includes a mounting bracket 17 on a pulley 15 disposed below the string-like member 11 via a plurality of wires or slings 16. The string-like member 11 and the weight portion 13 are connected by fastening to the suspension piece 18 formed on the belt 13. Further, the pulley 15, the wire or sling 16, the mounting bracket 17, and the suspension piece 18 are metal members, and the metal surface of each member is coated with an insulating paint or wound with an insulating tape so as to be insulated as much as possible. ing. Here, the connecting portion 12 is not limited to the pulley 15 or the like as long as the string-like member 11 and the weight portion 13 are connected by a metal member, and may be other parts.

次に、配置部14の錘部(下方部材)13と鋼構造物1の具体的な接続構造の一例について説明する。図8に示す如く、錘部13の一端には、鋼構造物1側へ向かう突起部13aを備えており、突起部13aには、複数のボルト孔(図示せず)が形成されている。又、鋼構造物1の下方側面には、海洋中又は汽水中へ突き出すピース部1bを溶接により配置しており、ピース部1bには、複数の締結孔(図示せず)が形成されている。更に錘部13の突起部13aと鋼構造物1のピース部1bは、ボルト孔及び締結孔にボルトBを通して締結し、導通し得るようになっている。ここで、錘部13の突起部13aと鋼構造物1のピース部1bの締結は、導通可能にするならば、形状、材質、締結位置、締結個数は、特に制限されるものではないし、溶接により固定されても良い。   Next, an example of a specific connection structure between the weight portion (lower member) 13 of the arrangement portion 14 and the steel structure 1 will be described. As shown in FIG. 8, one end of the weight portion 13 is provided with a protrusion 13a toward the steel structure 1, and a plurality of bolt holes (not shown) are formed in the protrusion 13a. In addition, a piece portion 1b protruding into the ocean or brackish water is disposed on the lower side surface of the steel structure 1 by welding, and a plurality of fastening holes (not shown) are formed in the piece portion 1b. . Further, the protruding portion 13a of the weight portion 13 and the piece portion 1b of the steel structure 1 can be connected to each other by being fastened through the bolt B and the bolt hole and the fastening hole. Here, if the fastening of the protrusion 13a of the weight 13 and the piece 1b of the steel structure 1 can be conducted, the shape, material, fastening position, and number of fastening are not particularly limited, and welding It may be fixed by.

続いて、配置部14の錘部(下方部材)13と鋼構造物1の具体的な接続構造の他例について説明する。図9、図10に示す如く、錘部13の一端には、鋼構造物1側へ向かう延在部13bと、延在部13bの先端から下方に向かう下方部13cとからなる突起部13dを配置している。又、鋼構造物1の下方側面には、海洋中又は汽水中で突き出す複数の腕部1cと、複数の腕部1cの先端を連結する連結部1dとからなるピース部1eを溶接により配置しており、腕部1cと連結部1dで囲まれる空間1fには、所定の大きさが形成されている。更に錘部13の突起部13dと鋼構造物1のピース部1eは、突起部13dの下方部13cをピース部1eの空間1fに挿入して掛止又は載置することにより、導通可能になっている。ここで、錘部13の突起部13dと鋼構造物1のピース部1eの掛止又は載置による接続は、導通可能にするならば、形状、材質、接続位置、接続個数は、特に制限されるものではないし、溶接により固定されても良い。   Subsequently, another example of the specific connection structure between the weight portion (lower member) 13 of the arrangement portion 14 and the steel structure 1 will be described. As shown in FIGS. 9 and 10, at one end of the weight portion 13, a protruding portion 13d including an extending portion 13b toward the steel structure 1 side and a lower portion 13c extending downward from the tip of the extending portion 13b is provided. It is arranged. Also, on the lower side surface of the steel structure 1, a piece portion 1e comprising a plurality of arm portions 1c protruding in the ocean or brackish water and a connecting portion 1d for connecting the tips of the plurality of arm portions 1c is arranged by welding. A predetermined size is formed in a space 1f surrounded by the arm portion 1c and the connecting portion 1d. Further, the protrusion 13d of the weight part 13 and the piece part 1e of the steel structure 1 can be made conductive by inserting the lower part 13c of the protrusion part 13d into the space 1f of the piece part 1e to be hooked or placed. ing. Here, the shape, material, connection position, and number of connections are particularly limited if the connection between the projection 13d of the weight 13 and the piece 1e of the steel structure 1 by hooking or placing can be conducted. It is not a thing and may be fixed by welding.

以下本発明を実施する形態の第一例の作用を説明する。   The operation of the first embodiment of the present invention will be described below.

海洋又は汽水(汽水域)に水没した鋼構造物1の水没部1aに対して通電する際には、準備段階として、ウインチ9を駆動してワイヤ等の紐状部材11を繰り出しつつ電線5を送り出し、錘部13を降下させて陽極7を海洋又は汽水に沈め、錘部13を海洋又は汽水の底部に設置する(図7のステップS1)。これにより紐状部材11及び錘部13は、陽極7を所定位置に配置する。ここで、陽極7と水没部1aの間隔、陽極7の配置、陽極7の大きさ等の設定は、陽極7を海洋又は汽水に沈める前に、鋼構造物1の構造、鋼構造物1の水没部1aの形状や面積の種々の条件に基づいて決定することが好ましい。又、電線5には、過度の張力が生じないようにすることが好ましい。   When energizing the submerged portion 1a of the steel structure 1 submerged in the ocean or brackish water (brackish water area), as a preparatory stage, the winch 9 is driven and the electric wire 5 is fed while feeding the string-like member 11 such as a wire. It sends out, the weight part 13 is lowered | hung, the anode 7 is sunk in the ocean or brackish water, and the weight part 13 is installed in the bottom part of the ocean or brackish water (step S1 of FIG. 7). Thereby, the string-like member 11 and the weight part 13 arrange | position the anode 7 in a predetermined position. Here, the interval between the anode 7 and the submerged portion 1a, the arrangement of the anode 7, the size of the anode 7, etc. are set before the anode 7 is submerged in the ocean or brackish water. It is preferable to determine based on various conditions of the shape and area of the submerged portion 1a. Further, it is preferable that excessive tension is not generated in the electric wire 5.

次に、錘部13と鋼構造物1を、錘部13又は鋼構造物1の突起、ロッド部材、紐状部材を用いて接続し、導通可能な状態にする(図7のステップS2)。ここで、図8に示す如く、接続構造の一例の場合には、錘部13の突起部13aと鋼構造物1のピース部1bを位置調整し、突起部13aのボルト孔とピース部1bの締結孔にボルトBを通してボルト締結し、導通可能な状態にする。又、図9、図10に示す如く、接続構造の他例の場合には、錘部13の降下に伴って位置調整し、突起部13dの下方部13cをピース部1eの空間1fに挿入して掛止又は載置し、導通可能な状態にする。更に、錘部13と鋼構造物1の接続は、導通可能にするならば、手順や構成は特に制限されるものではない。   Next, the weight part 13 and the steel structure 1 are connected using the protrusions of the weight part 13 or the steel structure 1, a rod member, and a string-like member to be in a conductive state (step S <b> 2 in FIG. 7). Here, as shown in FIG. 8, in the case of an example of the connection structure, the position of the projection 13 a of the weight portion 13 and the piece portion 1 b of the steel structure 1 are adjusted, and the bolt hole of the projection portion 13 a and the piece portion 1 b Bolts B are fastened to the fastening holes through the bolts B so that they can be conducted. As shown in FIGS. 9 and 10, in the case of another example of the connection structure, the position is adjusted as the weight portion 13 is lowered, and the lower portion 13c of the protruding portion 13d is inserted into the space 1f of the piece portion 1e. And put it in a conductive state. Furthermore, if the connection between the weight part 13 and the steel structure 1 is made conductive, the procedure and configuration are not particularly limited.

続いて、錘部13と鋼構造物1を接続した後には、電源2から電線5に直流電流を流して陽極7と鋼構造物1を通電し(図7のステップS3)、鋼構造物1の水没部1aに対して電着被膜の形成又は電気防食を行う。   Subsequently, after connecting the weight portion 13 and the steel structure 1, a direct current is passed from the power source 2 to the electric wire 5 to energize the anode 7 and the steel structure 1 (step S3 in FIG. 7). An electrodeposition film is formed or cathodic protection is performed on the submerged portion 1a.

同時に、陽極7と鋼構造物1の通電時には、錘部13と鋼構造物1の間で導通し(図7のステップS4)、錘部13を鋼構造物1と同様に電気的にマイナスの状態にし、接続部12の被覆が十分でない金属面や、接続部12の塗装が剥離した金属面に電着被膜の形成又は電気防食を行い、迷走電流の発生を防止する。   At the same time, when the anode 7 and the steel structure 1 are energized, conduction is established between the weight portion 13 and the steel structure 1 (step S4 in FIG. 7), and the weight portion 13 is electrically negative like the steel structure 1. In this state, an electrodeposited coating is formed on the metal surface where the coating of the connection portion 12 is not sufficiently covered or the metal surface where the coating of the connection portion 12 is peeled off or the anticorrosion is performed to prevent the occurrence of stray current.

通電が終了した際には、回収段階として、ウインチ9を逆方向に駆動して紐状部材11及び電線5を引き込み、陽極7及び錘部13を水中から引き上げ(図7のステップS5)、陽極7及び錘部13を鋼構造物1に載置して終了する。ここで、通電終了後には装置全体を撤去し、次に通電が必要な場所に移設しても良いし、電着被膜の形成又は電気防食が必要になった場合に再度設置して通電しても良い。   When energization is completed, as a recovery stage, the winch 9 is driven in the reverse direction to draw the string-like member 11 and the electric wire 5, and the anode 7 and the weight portion 13 are pulled up from the water (step S5 in FIG. 7). 7 and the weight 13 are placed on the steel structure 1 and the process is terminated. Here, after the energization is completed, the entire device may be removed and moved to a place where energization is required next, or when it is necessary to form an electrodeposition coating or cathodic protection, re-install and energize. Also good.

而して、このように実施の形態の第一例によれば、陽極7と鋼構造物1の通電時には、錘部13と鋼構造物1を導通し、接続部12の金属面に電着被膜の形成又は電気防食を行うので、接続部12の腐食を抑制して装置の耐久性を高めることができる。又、接続部12の耐久性を高めているので、通電終了後に錘部13を適切に引き上げることができる。   Thus, according to the first example of the embodiment, when the anode 7 and the steel structure 1 are energized, the weight portion 13 and the steel structure 1 are electrically connected, and electrodeposition is performed on the metal surface of the connection portion 12. Since the formation of the coating or the anticorrosion is performed, the corrosion of the connecting portion 12 can be suppressed and the durability of the device can be enhanced. Further, since the durability of the connecting portion 12 is enhanced, the weight portion 13 can be appropriately lifted after the energization is completed.

実施の形態の第一例において、配置部14の延在部材は、上下方向へ延在する紐状部材11であると共に、配置部14の下方部材は、紐状部材11に張力を付与する錘部13であり、陽極7は、紐状部材11と錘部13の少なくとも一方に支持される構成である。これにより接続部12の腐食を抑制して装置の耐久性を高めることができると同時に、陽極7を安定的に配置して好適に通電することができる。又、陽極7を安定的に配置することにより、錘部13と紐状部材11の接続部12にかかる負荷を低減し、耐久性を高めることができる。   In the first example of the embodiment, the extending member of the arrangement portion 14 is the string-like member 11 extending in the vertical direction, and the lower member of the arrangement portion 14 is a weight that applies tension to the string-like member 11. It is a part 13, and the anode 7 is configured to be supported by at least one of the string-like member 11 and the weight part 13. Thereby, corrosion of the connection part 12 can be suppressed and the durability of the apparatus can be enhanced, and at the same time, the anode 7 can be stably disposed and can be suitably energized. Moreover, by placing the anode 7 stably, the load applied to the connection portion 12 between the weight portion 13 and the string-like member 11 can be reduced and the durability can be enhanced.

実施の形態の第一例において、錘部(下方部材)13と紐状部材(延在部材)11を接続する接続部12は、金属部材であると、接続部12は、錘部13の荷重に耐える耐久性を備えることができると共に、接続部12の腐食の抑制に伴って長期にわたり高い耐久性を維持することできる。ここで接続部12が金属部材である場合と樹脂部材である場合を比較すると、金属部材の場合は耐久性等の面で樹脂部材の場合より優れている。   In the first example of the embodiment, when the connecting portion 12 that connects the weight portion (lower member) 13 and the string-like member (extending member) 11 is a metal member, the connecting portion 12 is the load of the weight portion 13. In addition, it is possible to have durability that can withstand the above-mentioned conditions, and it is possible to maintain high durability over a long period of time as corrosion of the connection portion 12 is suppressed. Here, comparing the case where the connecting portion 12 is a metal member and the case where it is a resin member, the case of the metal member is superior to the case of the resin member in terms of durability and the like.

実施の形態の第一例において、配置部14の錘部(下方部材)13を、鋼構造物1に締結、掛止、載置、溶接のうち少なくとも1つで接続すると、錘部13の突起部13a,13dと鋼構造物1のピース部1b,1eの接地面積を大きくできるので、大量の電気を流すことが可能となり、通電の自由度を高めると共に耐久性を高めることができる。又、配置部14の錘部(下方部材)13を、鋼構造物1に締結、掛止、載置のうち少なくとも1つで接続すると、錘部13の突起部13aと鋼構造物1のピース部1bを簡単に着脱することができるので、通電前の設置や通電終了後の錘部13の引き上げを容易にすることができる。   In the first example of the embodiment, when the weight portion (lower member) 13 of the arrangement portion 14 is connected to the steel structure 1 by at least one of fastening, hooking, placing, and welding, the protrusion of the weight portion 13 Since the ground contact areas of the portions 13a and 13d and the piece portions 1b and 1e of the steel structure 1 can be increased, a large amount of electricity can be flowed, and the degree of freedom in energization can be increased and the durability can be increased. Further, when the weight portion (lower member) 13 of the arrangement portion 14 is connected to the steel structure 1 by at least one of fastening, hooking, and placing, the protruding portion 13a of the weight portion 13 and the piece of the steel structure 1 are connected. Since the part 1b can be easily attached and detached, the installation before energization and the lifting of the weight part 13 after energization can be facilitated.

以下、本発明を実施する形態の第二例を図11、図12を参照して説明する。   Hereinafter, a second example of the embodiment of the present invention will be described with reference to FIGS.

実施の形態の第二例に示す鋼構造物の通電装置及び通電方法は、海洋又は汽水(汽水域)に配置した鋼構造物1に対し、半永久的な装置及び方法として適用されるものである。鋼構造物1は、第一例と同様に、護岸等に設けられる鋼矢板、橋梁や桟橋等に設けられる鋼管杭、コンクリート構造物の表面を鉄鋼部材で被覆した鋼ケーソン等であり、一部が海洋や汽水に水没するならば特に制限されるものではない。   The energization apparatus and energization method for a steel structure shown in the second example of the embodiment are applied as a semi-permanent apparatus and method to the steel structure 1 arranged in the ocean or brackish water (brake water area). . As in the first example, the steel structure 1 is a steel sheet pile provided on a revetment, a steel pipe pile provided on a bridge or a pier, a steel caisson having a surface of a concrete structure covered with a steel member, etc. If it is submerged in the ocean or brackish water, there is no particular limitation.

第二例の鋼構造物の通電装置は、図11に示す如く鋼構造物1の上面又は陸上に電源2を設置し、鋼構造物1の上面端側には、水面の上方に張り出すフレーム状の上方張出材(上方部材)19を備えている。又、鋼構造物1の側面には、水中に張り出すフレーム状の下方張出材(下方部材)20を導通可能に取り付けている。電源2は、ガイド材(図示せず)を介して水中へ延在するメイン側の電線5を備えていると共に、ガイド材(図示せず)を介して下方へ延在するアース側の電線6を備えている。メイン側の電線5は、水中に配する陽極7に接続されており、アース側の電線6は、鋼構造物1に取り付けられたアース用部材8に接続されている。ここで陽極7は、図11に示す如く一個でも良いし、複数個でも良い。又、陽極7の形状は特に限定されるものではない。   As shown in FIG. 11, the power supply device 2 is installed on the upper surface of the steel structure 1 or on land as shown in FIG. 11, and the steel structure 1 has a frame projecting above the water surface. An upward projecting material (upper member) 19 is provided. Further, a frame-like downward projecting material (downward member) 20 projecting into water is attached to the side surface of the steel structure 1 so as to be conductive. The power source 2 includes a main-side electric wire 5 that extends into the water via a guide material (not shown), and an earth-side electric wire 6 that extends downward via the guide material (not shown). It has. The main-side electric wire 5 is connected to an anode 7 disposed in water, and the ground-side electric wire 6 is connected to a grounding member 8 attached to the steel structure 1. Here, the anode 7 may be one as shown in FIG. 11 or plural. The shape of the anode 7 is not particularly limited.

上方張出材19と下方張出材20には、上下方向へ延在するロープやワイヤ等の紐状部材(延在部材)21を配置している。又、上方張出材19、下方張出材20、紐状部材21は、陽極7を安定的に配置する配置部22として構成され、陽極7が、鋼構造物1の水没部1aに対向し且つ所要の間隔をあけて配置されるようになっている。更に紐状部材21と下方張出材20は、接続部12を介して接続されている。なお、第二例の鋼構造物の通電装置及び通電方法は、半永久的な構造であり、ガイドシーブ4,10(図1、図2参照)はなくても良い。   A string-like member (extending member) 21 such as a rope or a wire extending in the vertical direction is disposed on the upper projecting material 19 and the lower projecting material 20. The upper projecting material 19, the lower projecting material 20, and the string-like member 21 are configured as an arrangement portion 22 for stably arranging the anode 7, and the anode 7 faces the submerged portion 1 a of the steel structure 1. And it arrange | positions with a required space | interval. Furthermore, the string-like member 21 and the downward projecting member 20 are connected via the connection portion 12. In addition, the electricity supply apparatus and the electricity supply method of the steel structure of the second example are semi-permanent structures, and the guide sheaves 4 and 10 (see FIGS. 1 and 2) may be omitted.

陽極7は、ロープやワイヤ等の紐状部材21によってガイドされるように支持されている。ここで紐状部材21の構成は、陽極7を安定に支持するならば、どのようなものでも良いが、第一例のように配置することが好ましい。又、紐状部材21と陽極7の支持構造は、締結、溶接、係止、固定等、特に制限されるものではない。更に紐状部材21は、複数本でも良いし、一本でも良い。   The anode 7 is supported so as to be guided by a string-like member 21 such as a rope or a wire. Here, the configuration of the string-like member 21 may be any as long as it stably supports the anode 7, but is preferably arranged as in the first example. Further, the support structure for the string-like member 21 and the anode 7 is not particularly limited, such as fastening, welding, locking, and fixing. Furthermore, the string-like member 21 may be plural or one.

接続部12は、金属部材ならばどのようなものでも良いが、第一例と同様に、滑車15、ワイヤもしくはスリング16、取付金具17、吊りピース18等の金属部材を用いても良い(図6参照)。そして金属部材の表面に、絶縁塗料の塗装や絶縁テープ等の巻き付けを行い、可能な限り絶縁するようにしている。   As long as the connecting portion 12 is a metal member, a metal member such as a pulley 15, a wire or sling 16, a mounting bracket 17, a suspension piece 18 or the like may be used as in the first example (FIG. 6). The surface of the metal member is coated with an insulating paint or wrapped with an insulating tape to insulate as much as possible.

以下本発明を実施する形態の第二例の作用を説明する。   The operation of the second embodiment of the present invention will be described below.

海洋又は汽水(汽水域)に水没した鋼構造物1の水没部1aに対して通電する際には、準備段階として、鋼構造物1の上面端側に上方張出材19を配置すると共に、鋼構造物1の側面に下方張出材20を導通可能に取り付ける(図12のステップS11)。次に陽極7をガイドするロープ、ワイヤの紐状部材21を接続部12により下方張出材20に配置し(図12のステップS12)、紐状部材21を天端(上端)まで上方へ引っ張り、紐状部材21の全長に張力をかける状態にする(図12のステップS13)。そして紐状部材21の上端を上方張出材19に接続して紐状部材21を上下方向へ張り渡し、陽極7を所定位置に配置する(図12のステップS14)。   When energizing the submerged portion 1a of the steel structure 1 submerged in the ocean or brackish water (brackish water area), as a preparatory stage, the upper overhanging material 19 is arranged on the upper surface end side of the steel structure 1, The downward projecting material 20 is attached to the side surface of the steel structure 1 so as to be conductive (step S11 in FIG. 12). Next, a rope and a wire-like member 21 for guiding the anode 7 are arranged on the downwardly projecting member 20 by the connecting portion 12 (step S12 in FIG. 12), and the string-like member 21 is pulled upward to the top end (upper end). The tension is applied to the entire length of the string-like member 21 (step S13 in FIG. 12). Then, the upper end of the string-like member 21 is connected to the upwardly projecting material 19, the string-like member 21 is stretched up and down, and the anode 7 is arranged at a predetermined position (step S14 in FIG. 12).

続いて、電源2から電線5に直流電流を流して陽極7と鋼構造物1を通電し(図12のステップS15)、鋼構造物1の水没部1aに対して電着被膜の形成又は電気防食を行う。同時に、陽極7と鋼構造物1の通電時には、下方張出材20と鋼構造物1の間で導通し、下方張出材20を鋼構造物1と同様に電気的にマイナスの状態にし、接続部12の塗装が剥離した金属面や、接続部12の被覆が十分でない金属面に電着被膜の形成又は電気防食を行い、迷走電流の発生を防止する。   Subsequently, a direct current is passed from the power source 2 to the electric wire 5 to energize the anode 7 and the steel structure 1 (step S15 in FIG. 12), and an electrodeposition film is formed on the submerged portion 1a of the steel structure 1 or electric Prevent corrosion. At the same time, when the anode 7 and the steel structure 1 are energized, the lower projecting member 20 and the steel structure 1 are electrically connected, and the lower projecting member 20 is electrically negative like the steel structure 1, Electrodeposition coating or cathodic protection is performed on the metal surface from which the coating of the connecting portion 12 has been peeled off or the metal surface where the coating of the connecting portion 12 is not sufficient, thereby preventing the occurrence of stray current.

而して、このように実施の形態の第二例によれば、第一例と同様に、陽極7と鋼構造物1の通電時には、下方張出材20と鋼構造物1を導通し、接続部12の金属面に電着被膜の形成又は電気防食を行うので、接続部12の腐食を抑制して装置の耐久性を高めることができる。また第二例の装置は、撤去する必要がなく、半永久的に使用することができる。   Thus, according to the second example of the embodiment, as in the first example, when the anode 7 and the steel structure 1 are energized, the downward projecting material 20 and the steel structure 1 are electrically connected. Since the electrodeposition coating is formed on the metal surface of the connection portion 12 or the anticorrosion is performed, the corrosion of the connection portion 12 can be suppressed and the durability of the device can be enhanced. The device of the second example does not need to be removed and can be used semipermanently.

実施の形態の第二例において、配置部22の延在部材は、上下方向へ延在する紐状部材21であると共に、配置部22の下方部材は、鋼構造物1から張り出すように形成され且つ紐状部材21の下方を支持する下方張出材20であり、陽極7は、紐状部材21と下方張出材20の少なくとも一方に支持される構成である。これにより接続部12の腐食を抑制して装置の耐久性を高めることができると同時に、陽極7を安定的に配置して好適に通電することができる。又、陽極7を安定的に配置することにより、下方張出材20と紐状部材21の接続部12にかかる負荷を低減し、耐久性を高めることができる。   In the second example of the embodiment, the extending member of the arrangement portion 22 is a string-like member 21 extending in the vertical direction, and the lower member of the arrangement portion 22 is formed so as to protrude from the steel structure 1. The anode 7 is configured to be supported by at least one of the string-like member 21 and the downwardly-extending material 20. Thereby, corrosion of the connection part 12 can be suppressed and the durability of the apparatus can be enhanced, and at the same time, the anode 7 can be stably disposed and can be suitably energized. Moreover, by placing the anode 7 stably, it is possible to reduce the load applied to the connecting portion 12 between the downward projecting member 20 and the string-like member 21 and to enhance the durability.

以下、本発明を実施する形態の第三例を図13〜図15を参照して説明する。   Hereinafter, a third example of the embodiment of the present invention will be described with reference to FIGS.

実施の形態の第三例に示す鋼構造物の通電装置及び通電方法は、第二例と同様に、海洋又は汽水(汽水域)に配置した鋼構造物1に対し、半永久的な装置及び方法として適用されるものである。鋼構造物1は、第一例、第二例と同様に、護岸等に設けられる鋼矢板、橋梁や桟橋等に設けられる鋼管杭、コンクリート構造物の表面を鉄鋼部材で被覆した鋼ケーソン等であり、一部が海洋や汽水に水没するならば特に制限されるものではない。   The steel structure energizing apparatus and energizing method shown in the third example of the embodiment are semi-permanent apparatus and method for the steel structure 1 arranged in the ocean or brackish water (brackish water area), as in the second example. As applied. As in the first and second examples, the steel structure 1 is a steel sheet pile provided on a seawall, a steel pipe pile provided on a bridge or a pier, a steel caisson coated with a steel member on the surface of a concrete structure, or the like. There is no particular limitation as long as a part is submerged in the ocean or brackish water.

第三例の通電装置は、図13に示す如く鋼構造物1の上面又は陸上に電源2を設置し、鋼構造物1の上面端側には、水面の上方に張り出すフレーム状の上方張出材(上方部材)19を備えている。又、鋼構造物1の側面には、水中に張り出すようにフレーム状の下方張出材(下方部材)20を導通可能に取り付けている。電源2は、ガイド材(図示せず)を介して水中へ延在するメイン側の電線5を備えていると共に、ガイド材(図示せず)を介して下方へ延在するアース側の電線6を備えている。メイン側の電線5は、水中に配する陽極7に接続されており、アース側の電線6は、鋼構造物1に取り付けられたアース用部材8に接続されている。ここで陽極7は、図13に示す如く一個でも良いし、複数個でも良い。又、陽極7の形状は特に限定されるものではない。   As shown in FIG. 13, a power supply 2 is installed on the upper surface of the steel structure 1 or on land as shown in FIG. 13, and the upper part of the upper surface of the steel structure 1 has a frame-shaped upper extension device extending above the water surface. An output material (upper member) 19 is provided. Further, a frame-like downward projecting material (downward member) 20 is attached to the side surface of the steel structure 1 so as to project into water. The power source 2 includes a main-side electric wire 5 that extends into the water via a guide material (not shown), and an earth-side electric wire 6 that extends downward via the guide material (not shown). It has. The main-side electric wire 5 is connected to an anode 7 disposed in water, and the ground-side electric wire 6 is connected to a grounding member 8 attached to the steel structure 1. Here, the anode 7 may be one as shown in FIG. 13 or plural. The shape of the anode 7 is not particularly limited.

上方張出材19と下方張出材20には、上下方向へ延在して陽極7を支持する固定部材(延在部材)24を設置している。又、上方張出材19、下方張出材20、固定部材24は、陽極7を安定的に配置する配置部25として構成され、陽極7が、鋼構造物1の水没部1aに対向し且つ所要の間隔をあけて配置されるようになっている。なお、第三例の鋼構造物の通電装置及び通電方法は、第二例と同様に半永久的な構造であり、ガイドシーブ4,10(図1参照)はなくても良い。   The upper projecting material 19 and the lower projecting material 20 are provided with a fixing member (extending member) 24 that extends in the vertical direction and supports the anode 7. Further, the upper projecting material 19, the lower projecting material 20, and the fixing member 24 are configured as an arrangement portion 25 for stably arranging the anode 7, and the anode 7 is opposed to the submerged portion 1a of the steel structure 1 and It is arranged with a required interval. In addition, the energization apparatus and energization method of the steel structure of the third example are semi-permanent structures as in the second example, and the guide sheaves 4 and 10 (see FIG. 1) may be omitted.

陽極7は、図14(a)に示す如く、ロッドや板状の固定部材24の中途位置に固定されている。又、陽極7は、ゴム板や塩化ビニル板等の板状の絶縁部26を介して固定部材24に固定され、固定部材24に対して絶縁されるようになっている。ここで固定部材24は、図14(b)に示す如く他の絶縁部27を介して陽極7の上端及び下端を支持するようにして良い。又、固定部材24は、陽極7を絶縁状態で支持するならば、配置や固定は特に制限されるものではない。   As shown in FIG. 14A, the anode 7 is fixed to a midway position of a rod or plate-like fixing member 24. The anode 7 is fixed to the fixing member 24 via a plate-like insulating portion 26 such as a rubber plate or a vinyl chloride plate, and is insulated from the fixing member 24. Here, the fixing member 24 may support the upper end and the lower end of the anode 7 through another insulating portion 27 as shown in FIG. The fixing member 24 is not particularly limited in arrangement and fixing as long as it supports the anode 7 in an insulated state.

接続部12は、金属部材ならばどのようなものでも良いが、第一例と同様に、滑車15、ワイヤもしくはスリング16、取付金具17、吊りピース18等の金属部材を用いても良い(図6参照)。そして金属部材の表面に、絶縁塗料の塗装や絶縁テープ等の巻き付けを行い、可能な限り絶縁するようにしている。   As long as the connecting portion 12 is a metal member, a metal member such as a pulley 15, a wire or sling 16, a mounting bracket 17, a suspension piece 18 or the like may be used as in the first example (FIG. 6). The surface of the metal member is coated with an insulating paint or wrapped with an insulating tape to insulate as much as possible.

以下本発明を実施する形態の第三例の作用を説明する。   The operation of the third embodiment of the present invention will be described below.

海洋又は汽水(汽水域)に水没した鋼構造物1の水没部1aに対して通電する際には、準備段階として、鋼構造物1の上面端側に上方張出材19を配置すると共に、鋼構造物1の側面に下方張出材20を導通可能に設置する。次に陽極7を接続した固定部材24を、接続部12を介して下方張出材20に取り付けると共に上方張出材19に取り付け、固定部材24、陽極7を設置する(図15のステップS21)。その後、陽極7と固定部材24の絶縁状態を確認する(図15のステップS22)。ここで、固定部材24、陽極7の設置は、他の手順で取り付けても良く、陽極7を安定的に配置するならば、特に制限されるものではない。   When energizing the submerged portion 1a of the steel structure 1 submerged in the ocean or brackish water (brackish water area), as a preparatory stage, the upper overhanging material 19 is arranged on the upper surface end side of the steel structure 1, A downwardly projecting material 20 is installed on the side surface of the steel structure 1 so as to be conductive. Next, the fixing member 24 to which the anode 7 is connected is attached to the lower overhanging material 20 and the upper overhanging material 19 through the connection portion 12, and the fixing member 24 and the anode 7 are installed (step S21 in FIG. 15). . Thereafter, the insulation state between the anode 7 and the fixing member 24 is confirmed (step S22 in FIG. 15). Here, the installation of the fixing member 24 and the anode 7 may be performed by other procedures, and is not particularly limited as long as the anode 7 is stably disposed.

続いて、電源2から電線5に直流電流を流して陽極7と鋼構造物1を通電し(図15のステップS23)、鋼構造物1の水没部1aに対して電着被膜の形成又は電気防食を行う。同時に、陽極7と鋼構造物1の通電時には、下方張出材20と鋼構造物1の間で導通し、下方張出材20を鋼構造物1と同様に電気的にマイナスの状態にし、接続部12の塗装が剥離した金属面や、接続部12の被覆が十分でない金属面に電着被膜の形成又は電気防食を行い、迷走電流の発生を防止する。   Subsequently, a direct current is supplied from the power source 2 to the electric wire 5 to energize the anode 7 and the steel structure 1 (step S23 in FIG. 15), and an electrodeposition film is formed on the submerged portion 1a of the steel structure 1 or electric Do anticorrosion. At the same time, when the anode 7 and the steel structure 1 are energized, the lower projecting member 20 and the steel structure 1 are electrically connected, and the lower projecting member 20 is electrically negative like the steel structure 1, Electrodeposition coating or cathodic protection is performed on the metal surface from which the coating of the connecting portion 12 has been peeled off or the metal surface where the coating of the connecting portion 12 is not sufficient, thereby preventing the occurrence of stray current.

而して、このように実施の形態の第三例によれば、第二例と同様に、陽極7と鋼構造物1の通電時には、下方張出材20と鋼構造物1を導通し、接続部12の金属面に電着被膜の形成又は電気防食を行うので、接続部12の腐食を抑制して装置の耐久性を高めることができる。また第三例の装置は、第二例と同様に、撤去する必要がなく、半永久的に使用することができる。   Thus, according to the third example of the embodiment, as in the second example, when the anode 7 and the steel structure 1 are energized, the downward projecting member 20 and the steel structure 1 are electrically connected. Since the electrodeposition coating is formed on the metal surface of the connection portion 12 or the anticorrosion is performed, the corrosion of the connection portion 12 can be suppressed and the durability of the device can be enhanced. Moreover, the apparatus of a 3rd example does not need to be removed like the 2nd example, but can be used semipermanently.

実施の形態の第三例において、配置部25の延在部材は、上下方向へ延在して陽極7を固定する固定部材24であると共に、配置部25の下方部材は、鋼構造物1から張り出すように形成され且つ固定部材24の下方を支持する下方張出材20である。これにより接続部12の腐食を抑制して装置の耐久性を高めることができると同時に、陽極7を安定的に配置して好適に通電することができる。又、陽極7を安定的に配置することにより、下方張出材20と固定部材24の接続部12にかかる負荷を低減し、耐久性を高めることができる。   In the third example of the embodiment, the extending member of the arrangement portion 25 is a fixing member 24 that extends in the vertical direction and fixes the anode 7, and the lower member of the arrangement portion 25 is from the steel structure 1. A downward projecting material 20 is formed so as to project and supports the lower part of the fixing member 24. Thereby, corrosion of the connection part 12 can be suppressed and the durability of the apparatus can be enhanced, and at the same time, the anode 7 can be stably disposed and can be suitably energized. Further, by stably disposing the anode 7, it is possible to reduce the load applied to the connecting portion 12 between the downward projecting member 20 and the fixing member 24, and to improve the durability.

実施の形態の第三例において、固定部材24と陽極7の間には、絶縁部26,27を介在させると、接続部12の腐食を抑制して耐久性を更に高めると同時に、絶縁部26,27により漏電を防止し、好適に通電することができる。   In the third example of the embodiment, when the insulating portions 26 and 27 are interposed between the fixing member 24 and the anode 7, the corrosion of the connecting portion 12 is suppressed to further increase the durability, and at the same time, the insulating portion 26. , 27 can prevent electric leakage and can be suitably energized.

以下、本発明を実施する形態の第四例を図16〜図18を参照して説明する。   Hereinafter, a fourth example of the embodiment of the present invention will be described with reference to FIGS.

実施の形態の第四例に示す鋼構造物の通電装置及び通電方法は、海洋又は汽水(汽水域)に配置した鋼構造物1に対し、仮設の装置及び方法として適用されるものである。鋼構造物1は、第一例と同様に、護岸等に設けられる鋼矢板、橋梁や桟橋等に設けられる鋼管杭、コンクリート構造物の表面を鉄鋼部材で被覆した鋼ケーソン等であり、一部が海洋や汽水に水没するならば特に制限されるものではない。   The energizing apparatus and energizing method for a steel structure shown in the fourth example of the embodiment are applied as a temporary apparatus and method to the steel structure 1 arranged in the ocean or brackish water (brake water area). As in the first example, the steel structure 1 is a steel sheet pile provided on a revetment, a steel pipe pile provided on a bridge or a pier, a steel caisson having a surface of a concrete structure covered with a steel member, etc. If it is submerged in the ocean or brackish water, there is no particular limitation.

第四例の鋼構造物の通電装置は、図16に示す如く鋼構造物1の上面又は陸上に電源2を設置し、鋼構造物1の上面端側には、水面の上方に張り出すフレーム状の張出架台3を備えている。電源2は、張出架台3上のガイドシーブ4を介して水中へ延在するメイン側の電線5を備えていると共に、ガイド材(図示せず)を介して下方へ延在するアース側の電線6を備えている。メイン側の電線5は、水中に配する複数の陽極7に接続されており、アース側の電線6は、鋼構造物1に取り付けられたアース用部材8に接続されている。ここで陽極7は、複数個(図16では四個)でも良いし、一個でも良いし、個数や形状について特に限定されるものではない。   As shown in FIG. 16, a power supply 2 is installed on the upper surface of the steel structure 1 or on the land as shown in FIG. 16, and the steel structure 1 has a frame projecting above the water surface. In this way, a projecting stand 3 is provided. The power source 2 includes a main-side electric wire 5 that extends into the water via a guide sheave 4 on the overhang base 3 and a ground-side electric wire that extends downward via a guide material (not shown). An electric wire 6 is provided. The main-side electric wire 5 is connected to a plurality of anodes 7 arranged in water, and the ground-side electric wire 6 is connected to a grounding member 8 attached to the steel structure 1. Here, the anode 7 may be plural (four in FIG. 16) or one, and the number and shape are not particularly limited.

鋼構造物1上には、第一例と同様に、ウインチ9、ガイドシーブ10、ロープやワイヤ等の紐状部材(延在部材)11を備えている(図2参照)。又、紐状部材11の下端には、接続部12を介して錘部(下方部材)13を接続している。更に紐状部材11及び錘部13は、陽極7を安定的に配置する配置部14として構成され、陽極7が、鋼構造物1の水没部1aに対向し且つ所要の間隔をあけて配置されるようになっている。ここで紐状部材11は、横方向に形成される陽極7の両側を支持しても良いし(図3参照)、ロープやワイヤ等の他の紐状部材11aを別途用いて、縦方向に形成される陽極7の両側を支持しても良い(図4参照)。又、紐状部材11と陽極7の支持構造は、締結、溶接、係止、固定等、特に制限されるものではない。更に紐状部材11は、陽極7を安定的に支持し得るならば、複数本でも良いし、一本でも良い。   On the steel structure 1, similarly to the first example, a winch 9, a guide sheave 10, and a string-like member (extending member) 11 such as a rope or a wire are provided (see FIG. 2). In addition, a weight portion (downward member) 13 is connected to the lower end of the string-like member 11 via a connection portion 12. Furthermore, the string-like member 11 and the weight part 13 are configured as an arrangement part 14 for stably arranging the anode 7, and the anode 7 is arranged opposite to the submerged part 1 a of the steel structure 1 and at a predetermined interval. It has become so. Here, the string-like member 11 may support both sides of the anode 7 formed in the horizontal direction (see FIG. 3), or by using another string-like member 11a such as a rope or a wire in the vertical direction. You may support the both sides of the anode 7 formed (refer FIG. 4). Further, the support structure of the string-like member 11 and the anode 7 is not particularly limited, such as fastening, welding, locking, and fixing. Further, the string-like member 11 may be plural or one as long as it can stably support the anode 7.

錘部13は、所定長さを有する重量物であって海洋や汽水の底部に配置するようになっていると共に、紐状部材11に鉛直方向へ張力を付与している。又、錘部13の一端には、図17に示す如く、鋼構造物1側へ向かう張出部13eを備えている。更に、錘部13の張出部13eと鋼構造物1のアース用部材8は、配線Lを介して接続されている。更に又、配線Lは、張出部13e、アース用部材8に対し、それぞれボルトと端子等で止められている。ここで、錘部13の張出部13eと鋼構造物1のアース用部材8の接続は、配線Lにより導通可能にするならば、形状、材質、締結位置、締結個数は、特に制限されるものではない。又、配線Lは、錘部13と鋼構造物1に接続されるならば、張出部13eやアース用部材8以外の箇所でも良い。更に錘部13には、陽極7を紐状部材11で支持する代わりに、図5に示す如く陽極7の電線5等を接続し、陽極7を錘部13で支持するようにしても良い。   The weight portion 13 is a heavy object having a predetermined length and is arranged at the bottom of the ocean or brackish water, and applies tension to the string-like member 11 in the vertical direction. Moreover, as shown in FIG. 17, the one end of the weight part 13 is provided with the overhang | projection part 13e which goes to the steel structure 1 side. Furthermore, the overhanging portion 13 e of the weight portion 13 and the grounding member 8 of the steel structure 1 are connected via the wiring L. Furthermore, the wiring L is fixed to the overhanging portion 13e and the grounding member 8 by bolts and terminals, respectively. Here, if the connection between the overhanging portion 13e of the weight portion 13 and the grounding member 8 of the steel structure 1 is made conductive by the wiring L, the shape, material, fastening position, and number of fastening are particularly limited. It is not a thing. Further, the wiring L may be a portion other than the overhanging portion 13 e and the grounding member 8 as long as it is connected to the weight portion 13 and the steel structure 1. Further, instead of supporting the anode 7 with the string-like member 11, the electric wire 5 of the anode 7 or the like may be connected to the weight portion 13 and the anode 7 may be supported by the weight portion 13.

接続部12は、図17に示す如く、紐状部材11の下部に配置された滑車15に、複数本のワイヤもしくはスリング16を介して取付金具17を備えており、取付金具17を、錘部13に形成された吊りピース18に締結することにより、紐状部材11と錘部13を連結している。又、滑車15、ワイヤもしくはスリング16、取付金具17、吊りピース18は、金属部材であり、各部材の金属面に、絶縁塗料の塗装や絶縁テープの巻き付けを行い、可能な限り絶縁するようにしている。ここで接続部12は、紐状部材11と錘部13を金属部材で接続するならば、滑車15等に制限されるものでなく、他の部品であっても良い。   As shown in FIG. 17, the connecting portion 12 includes a mounting bracket 17 on a pulley 15 disposed at the lower portion of the string-like member 11 via a plurality of wires or slings 16. The string-like member 11 and the weight portion 13 are connected by fastening to the suspension piece 18 formed on the belt 13. Further, the pulley 15, the wire or sling 16, the mounting bracket 17, and the suspension piece 18 are metal members, and the metal surface of each member is coated with an insulating paint or wound with an insulating tape so as to be insulated as much as possible. ing. Here, the connecting portion 12 is not limited to the pulley 15 or the like as long as the string-like member 11 and the weight portion 13 are connected by a metal member, and may be other parts.

以下本発明を実施する形態の第四例の作用を説明する。   The operation of the fourth example of the embodiment for carrying out the present invention will be described below.

海洋又は汽水(汽水域)に水没した鋼構造物1の水没部1aに対して通電する際には、準備段階として、錘部13を海洋又は汽水に沈める前に、錘部13の張出部13eと鋼構造物1のアース用部材8を配線Lにより接続し、導通可能な状態にする(図18のステップS31)。   When energizing the submerged portion 1a of the steel structure 1 submerged in the ocean or brackish water (brass water area), as a preparatory stage, the submerged portion of the weight unit 13 is placed before the weight unit 13 is submerged in the ocean or brackish water 13e and the earthing member 8 of the steel structure 1 are connected by the wiring L to be in a conductive state (step S31 in FIG. 18).

次にウインチ9を駆動してワイヤ等の紐状部材11を繰り出しつつ電線5を送り出し、錘部13を降下させて陽極7を海洋又は汽水に沈め、錘部13を海洋又は汽水の底部に設置する(図18のステップS32)。これにより紐状部材11及び錘部13は、陽極7を所定位置に配置する。ここで、陽極7と水没部1aの間隔、陽極7の配置、陽極7の大きさ等の設定は、陽極7を海洋又は汽水に沈める前に、鋼構造物1の構造、鋼構造物1の水没部1aの形状や面積の種々の条件に基づいて決定することが好ましい。又、電線5には、過度の張力が生じないようにすることが好ましい。   Next, the winch 9 is driven to feed the wire 5 while feeding the string-like member 11 such as a wire, the weight 13 is lowered, the anode 7 is submerged in the ocean or brackish water, and the weight 13 is installed at the bottom of the ocean or brackish water. (Step S32 in FIG. 18). Thereby, the string-like member 11 and the weight part 13 arrange | position the anode 7 in a predetermined position. Here, the interval between the anode 7 and the submerged portion 1a, the arrangement of the anode 7, the size of the anode 7, etc. are set before the anode 7 is submerged in the ocean or brackish water. It is preferable to determine based on various conditions of the shape and area of the submerged portion 1a. Further, it is preferable that excessive tension is not generated in the electric wire 5.

続いて、錘部13と鋼構造物1を接続した後には、電源2から電線5に直流電流を流して陽極7と鋼構造物1を通電し(図18のステップS33)、鋼構造物1の水没部1aに対して電着被膜の形成又は電気防食を行う。   Subsequently, after connecting the weight portion 13 and the steel structure 1, a direct current is passed from the power source 2 to the electric wire 5 to energize the anode 7 and the steel structure 1 (step S33 in FIG. 18). An electrodeposition film is formed or cathodic protection is performed on the submerged portion 1a.

同時に、陽極7と鋼構造物1の通電時には、錘部13と鋼構造物1の間で導通し(図18のステップS34)、錘部13を鋼構造物1と同様に電気的にマイナスの状態にし、接続部12の被覆が十分でない金属面や、接続部12の塗装が剥離した金属面に電着被膜の形成又は電気防食を行い、迷走電流の発生を防止する。   At the same time, when the anode 7 and the steel structure 1 are energized, conduction is established between the weight portion 13 and the steel structure 1 (step S34 in FIG. 18), and the weight portion 13 is electrically negative like the steel structure 1. In this state, an electrodeposited coating is formed on the metal surface where the coating of the connection portion 12 is not sufficiently covered or the metal surface where the coating of the connection portion 12 is peeled off or the anticorrosion is performed to prevent the occurrence of stray current.

通電が終了した際には、回収段階として、ウインチ9を逆方向に駆動して紐状部材11及び電線5を引き込み、陽極7及び錘部13を水中から引き上げ(図18のステップS35)、陽極7及び錘部13を鋼構造物1に載置して終了する。ここで、通電終了後には装置全体を撤去し、次に通電が必要な場所に移設しても良いし、電着被膜の形成又は電気防食が必要になった場合に再度設置して通電しても良い。   When the energization is completed, as a recovery stage, the winch 9 is driven in the reverse direction to draw the string-like member 11 and the electric wire 5, and the anode 7 and the weight portion 13 are pulled up from the water (step S35 in FIG. 18). 7 and the weight 13 are placed on the steel structure 1 and the process is terminated. Here, after the energization is completed, the entire device may be removed and moved to a place where energization is required next, or when it is necessary to form an electrodeposition coating or cathodic protection, re-install and energize. Also good.

而して、このように実施の形態の第四例によれば、第一例と同様に、陽極7と鋼構造物1の通電時には、錘部(下方部材)13と鋼構造物1を導通し、接続部12の金属面に電着被膜の形成又は電気防食を行うので、接続部12の腐食を抑制して装置の耐久性を高めることができる。又、接続部12の耐久性を高めるので、通電終了後に錘部13を適切に引き上げることができる。更に第一例と同様な作用効果を得ることができる。   Thus, according to the fourth example of the embodiment, as in the first example, when the anode 7 and the steel structure 1 are energized, the weight part (lower member) 13 and the steel structure 1 are electrically connected. In addition, since the electrodeposition film is formed on the metal surface of the connection portion 12 or cathodic protection is performed, the corrosion of the connection portion 12 can be suppressed and the durability of the device can be improved. Moreover, since durability of the connection part 12 is improved, the weight part 13 can be appropriately pulled up after the end of energization. Furthermore, the same effect as the first example can be obtained.

実施の形態の第四例において、配置部14の錘部(下方部材)13と鋼構造物1の接続は、配線Lを介するものであると、錘部13を鋼構造物1から離間した位置に配置し得るので、鋼構造物1の壁面に凹凸や突起状の構造物がある場合であっても、錘部13を沈める際や引き上げる際の障害となることがなく、通電前の設置や通電終了後の錘部13の引き上げを容易に行うことができる。   In the fourth example of the embodiment, the connection between the weight part (lower member) 13 of the arrangement part 14 and the steel structure 1 is via the wiring L, and the position where the weight part 13 is separated from the steel structure 1. Therefore, even if there is an uneven or protruding structure on the wall surface of the steel structure 1, it does not become an obstacle when sinking or lifting the weight part 13, The weight part 13 can be easily pulled up after the energization is completed.

実施の形態の第四例において、配置部14の錘部(下方部材)13を鋼構造物1に配線Lを介して接続した後、錘部13を海洋又は汽水に沈めると、海洋中又は汽水中で錘部13と鋼構造物1を導通可能に接続する作業を不要にするので、海洋中又は汽水中でダイバー等が行う作業を大幅に低減し、接続部12の金属面に電着被膜の形成又は電気防食を容易に行うことができる。   In the fourth example of the embodiment, after connecting the weight portion (lower member) 13 of the arrangement portion 14 to the steel structure 1 via the wiring L, the weight portion 13 is submerged in the ocean or brackish water. Since the work of connecting the weight part 13 and the steel structure 1 in a conductive manner is unnecessary, the work performed by divers or the like in the ocean or brackish water is greatly reduced, and the electrodeposition coating is applied to the metal surface of the connection part 12. Formation or cathodic protection can be easily performed.

尚、本発明の鋼構造物の通電装置及び通電方法は、上述の図示例にのみ限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。   In addition, the energization apparatus and energization method of the steel structure of the present invention are not limited to the illustrated examples described above, and it is needless to say that various changes can be made without departing from the scope of the present invention.

1 鋼構造物
2 電源
5 電線
7 陽極
11 紐状部材(延在部材)
12 接続部
13 錘部(下方部材)
14 配置部
20 下方張出材(下方部材)
21 紐状部材(延在部材)
22 配置部
24 固定部材(延在部材)
25 配置部
26 絶縁部
27 絶縁部
L 配線
DESCRIPTION OF SYMBOLS 1 Steel structure 2 Power supply 5 Electric wire 7 Anode 11 String-like member (extending member)
12 connection part 13 weight part (lower part)
14 Arrangement part 20 Downward projecting material (lower member)
21 String member (extending member)
22 arrangement part 24 fixing member (extension member)
25 Arrangement part 26 Insulation part 27 Insulation part L Wiring

Claims (12)

海洋又は汽水に配置した鋼構造物に対し、水中で陽極から通電する鋼構造物の通電装置であって、
前記鋼構造物又は陸上に設置される電源と、該電源に電線を介して接続され且つ水中に配置される陽極と、該陽極を鋼構造物に対向して配置する配置部とを備え、
前記配置部は、上方から水中へ延在する延在部材と、該延在部材の下部に接続部を介して配置され且つ鋼構造物と導通可能に接続される下方部材とを備えた鋼構造物の通電装置。
A steel structure energization device for energizing from the anode in water to a steel structure located in the ocean or brackish water,
A power source installed on the steel structure or on land, an anode connected to the power source via an electric wire and disposed in water, and a disposing portion for disposing the anode facing the steel structure,
The arrangement portion includes a steel structure including an extending member extending from above to underwater, and a lower member arranged at a lower portion of the extending member via a connecting portion and connected to a steel structure in a conductive manner. Electrical device for things.
前記配置部の延在部材は、上下方向へ延在する紐状部材であると共に、前記配置部の下方部材は、紐状部材に張力を付与する錘部であり、前記陽極は、紐状部材と錘部の少なくとも一方に支持される構成である請求項1に記載の鋼構造物の通電装置。   The extending member of the arrangement part is a string-like member extending in the vertical direction, the lower member of the arrangement part is a weight part for applying tension to the string-like member, and the anode is a string-like member The steel structure energization device according to claim 1, wherein the energization device is supported by at least one of the weight portion and the weight portion. 前記配置部の延在部材は、上下方向へ延在する紐状部材であると共に、前記配置部の下方部材は、鋼構造物から張り出すように形成され且つ紐状部材の下方を支持する下方張出材であり、前記陽極は、紐状部材と下方張出材の少なくとも一方に支持される構成である請求項1に記載の鋼構造物の通電装置。   The extending member of the arrangement part is a string-like member extending in the vertical direction, and the lower member of the arrangement part is formed so as to protrude from the steel structure and supports the lower part of the string-like member The energization device for a steel structure according to claim 1, wherein the steel structure is a projecting material, and the anode is supported by at least one of a string-like member and a lower projecting material. 前記配置部の延在部材は、上下方向へ延在して陽極を固定する固定部材であると共に、前記配置部の下方部材は、鋼構造物から張り出すように形成され且つ固定部材の下方を支持する下方張出材である請求項1に記載の鋼構造物の通電装置。   The extending member of the placement portion is a fixing member that extends in the vertical direction and fixes the anode, and the lower member of the placement portion is formed so as to protrude from the steel structure and extends below the fixing member. The energizing device for a steel structure according to claim 1, wherein the energizing device is a downward projecting material to be supported. 前記固定部材と前記陽極の間には、絶縁部を介在させる請求項4に記載の鋼構造物の通電装置。   The steel structure energization device according to claim 4, wherein an insulating portion is interposed between the fixing member and the anode. 前記接続部は、金属部材である請求項1〜5のいずれか1つに記載の鋼構造物の通電装置。   The said connection part is a metal member, The electricity supply apparatus of the steel structure as described in any one of Claims 1-5. 前記配置部の下方部材と前記鋼構造物の接続は、締結、掛止、載置、溶接のうち少なくとも1つである請求項1〜6のいずれか1つに記載の鋼構造物の通電装置。   The electrical connection device for a steel structure according to any one of claims 1 to 6, wherein the connection between the lower member of the arrangement portion and the steel structure is at least one of fastening, hooking, placing, and welding. . 前記配置部の下方部材と前記鋼構造物の接続は、配線を介するものである請求項1又は2に記載の鋼構造物の通電装置。   The current-carrying device for a steel structure according to claim 1 or 2, wherein the connection between the lower member of the arrangement portion and the steel structure is via wiring. 海洋又は汽水に配置した鋼構造物に対し、水中で陽極から通電する鋼構造物の通電方法であって、
前記陽極を鋼構造物に対向して配置するように、上方から水中へ延在する延在部材と、該延在部材の下部に接続部を介して配置され且つ鋼構造物と導通可能に接続される下方部材とを備え、
前記陽極へ通電した際には、鋼構造物と下方部材を導通して接続部に電着被膜の形成又は電気防食を行う鋼構造物の通電方法。
A steel structure energized from the anode in water to a steel structure placed in the ocean or brackish water,
An extending member extending from above to underwater so as to be disposed opposite to the steel structure, and the anode is disposed at a lower portion of the extending member via a connecting portion and connected to the steel structure so as to be conductive. A lower member to be provided,
A method of energizing a steel structure in which when the anode is energized, the steel structure and the lower member are electrically connected to form an electrodeposited film or cathodic protection on the connecting portion.
前記下方部材を、前記鋼構造物に締結、掛止、載置、溶接のうち少なくとも1つで接続する請求項9に記載の鋼構造物の通電方法。   The method for energizing a steel structure according to claim 9, wherein the lower member is connected to the steel structure by at least one of fastening, latching, placing, and welding. 前記下方部材を、前記鋼構造物に配線を介して接続する請求項9に記載の鋼構造物の通電方法。   The method for energizing a steel structure according to claim 9, wherein the lower member is connected to the steel structure via a wiring. 前記下方部材を前記鋼構造物に配線を介して接続した後、前記下方部材を海洋又は汽水に沈める請求項11に記載の鋼構造物の通電方法。   The method of energizing a steel structure according to claim 11, wherein the lower member is submerged in the ocean or brackish water after the lower member is connected to the steel structure via wiring.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389198A (en) * 1977-01-14 1978-08-05 Nakagawa Corrosion Protect Hanging type electrical antiicorrosive device for balast tank of ship
JPS62263987A (en) * 1986-03-10 1987-11-16 オロンジオ・ド・ノラ・ソシエテ・アノニム Cathode protecting system
JPH01136167U (en) * 1988-02-29 1989-09-18
JPH0718475A (en) * 1993-07-06 1995-01-20 Nippon Boshoku Kogyo Kk Method for installing galvanic anode to underwater steel structure and anode panel used in this method
JP2011068938A (en) * 2009-09-25 2011-04-07 Ihi Corp Apparatus for forming electrodeposition coating film
JP2011252190A (en) * 2010-06-01 2011-12-15 Ihi Corp Method for preventing corrosion of marine steel structure
JP2012007197A (en) * 2010-06-23 2012-01-12 Ihi Corp Electrodeposition anticorrosion method and device of steel sheet pile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389198A (en) * 1977-01-14 1978-08-05 Nakagawa Corrosion Protect Hanging type electrical antiicorrosive device for balast tank of ship
JPS62263987A (en) * 1986-03-10 1987-11-16 オロンジオ・ド・ノラ・ソシエテ・アノニム Cathode protecting system
JPH01136167U (en) * 1988-02-29 1989-09-18
JPH0718475A (en) * 1993-07-06 1995-01-20 Nippon Boshoku Kogyo Kk Method for installing galvanic anode to underwater steel structure and anode panel used in this method
JP2011068938A (en) * 2009-09-25 2011-04-07 Ihi Corp Apparatus for forming electrodeposition coating film
JP2011252190A (en) * 2010-06-01 2011-12-15 Ihi Corp Method for preventing corrosion of marine steel structure
JP2012007197A (en) * 2010-06-23 2012-01-12 Ihi Corp Electrodeposition anticorrosion method and device of steel sheet pile

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