JPH0485403A - Method for applying anti-corrosive coating of suspended structure supporting diagonal cable - Google Patents
Method for applying anti-corrosive coating of suspended structure supporting diagonal cableInfo
- Publication number
- JPH0485403A JPH0485403A JP20197390A JP20197390A JPH0485403A JP H0485403 A JPH0485403 A JP H0485403A JP 20197390 A JP20197390 A JP 20197390A JP 20197390 A JP20197390 A JP 20197390A JP H0485403 A JPH0485403 A JP H0485403A
- Authority
- JP
- Japan
- Prior art keywords
- grout
- cable
- diagonal cable
- end side
- corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 239000011248 coating agent Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title description 12
- 239000011440 grout Substances 0.000 claims abstract description 47
- 238000005260 corrosion Methods 0.000 claims description 40
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
- Tents Or Canopies (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、斜張橋、吊り橋、吊屋根等の吊構造物を支
持する斜材ケーブルに、防食被覆を施す被覆方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coating method for applying an anti-corrosion coating to diagonal cables that support suspended structures such as cable-stayed bridges, suspension bridges, and suspended roofs.
〔従来技術］
従来この種の防食被覆方法としては、次に述べるものが
一般に知られている。[Prior Art] Conventionally, as this type of anti-corrosion coating method, the following is generally known.
■ 仮設ケーブルワイヤーをガイドとし、施工現場にて
単管を１本ずつ接合して、所定の長さの防食被覆用の防
食パイプを作製する単管接続法。■ A single-pipe connection method in which a temporary cable wire is used as a guide and single pipes are joined one by one at the construction site to create a corrosion-proof pipe with a predetermined length for anti-corrosion coating.
■ 工場において、所定長さに加工された斜材ケーブル
へ、柔軟性のある長管（現状ではポリエチレン管）にて
防食被覆を行ってプレハブ化する。■ At the factory, diagonal cables are processed to a predetermined length and then coated with anti-corrosion coating using flexible long pipes (currently polyethylene pipes) and then prefabricated.
そしてこのプレハブ化した斜材ケーブルを施工現場に移
送して架設するプレハブ法。The prefabrication method involves transporting this prefabricated diagonal cable to the construction site and erecting it.
■ 斜材ケーブルワイヤー架設後、斜材ケーブルに直接
防食テープの巻付けあるいは樹脂ライニングを施すこと
により防食被覆を行うライニング法。■ A lining method in which the diagonal cable is coated with anti-corrosion coating by directly wrapping anti-corrosion tape or applying resin lining to the diagonal cable after it has been erected.
なおこのライニング法は、前述した■および■の方法が
斜材ケーブルとパイプとの間隙を充填物により厚い防食
層を作るのに対し、比較的薄い防食層となっている。This lining method creates a relatively thin anti-corrosion layer, whereas the aforementioned methods (1) and (2) create a thick anti-corrosion layer by filling the gap between the diagonal cable and the pipe.
しかし■の単管接続法では、仮緊張したワイヤーに４〜
６ｍ程度のパイプを一本ずつ通すためにパイプ１本を通
して接合するごとに、緊張ワイヤーの張り替え作業等煩
雑な作業が多く完成まで多大な時間を要すると共に、緊
張ワイヤーの張り替えという危険作業を伴う。However, in the single pipe connection method of ■, the temporarily tensioned wire is
Each time a pipe of about 6 m length is passed through and joined, there are many complicated tasks such as re-stretching the tension wire, which takes a long time to complete, and involves the dangerous work of re-stretching the tension wire.
また単管接続法のもう１つの方法としては、斜材ケーブ
ルとは別途に設けた仮設ケーブルワイヤーに単管を吊下
げ、接合後順次送り出すことにより所定長さの防食被覆
管を作製するものもある。Another method of connecting single pipes is to suspend the single pipes from a temporary cable wire installed separately from the diagonal cable, and after joining them, send them out one after another to create a predetermined length of anti-corrosion coated pipe. be.
しかしこれもケーブルワイヤーの仮設並びに撤去。However, this also involved temporary installation and removal of cable wires.
作業足場の組立て並びに撤去等多大労力および時間を要
する。Assembling and dismantling the work scaffolding requires a great deal of labor and time.
さらにこれらの方法は、防食被覆パイプの完成後、斜材
鋼線を所定本数パイプ内へ押入して斜材ケーブルとする
ため、非常に手数を要する。Furthermore, these methods are very time-consuming because, after the anti-corrosion coated pipe is completed, a predetermined number of diagonal steel wires are forced into the pipe to form a diagonal cable.
そして■のプレハブ法は、所定長さの斜材鋼線に所定長
さの防食被覆パイプを工場で外装して斜材ケーブルとし
た後、リールに巻取り橋梁架設地点まで輸送する必要が
ある。そのため斜材ケーブルが長大化すると重量および
リールの高さの点で陸上輸送が困難である。In the prefabrication method (2), it is necessary to wrap a predetermined length of anti-corrosion coated pipe around a predetermined length of diagonal steel wire at a factory to make a diagonal cable, then wind it onto a reel and transport it to the bridge construction site. Therefore, if the diagonal cable becomes long, it is difficult to transport it overland due to the weight and the height of the reel.
また斜材綱線と防食被覆パイプとを一体化して斜材ケー
ブルとしたものを架設するため、架設作業中に防食被覆
管を損傷することがあり、補修が大作業となる。Furthermore, since a diagonal cable is constructed by integrating the diagonal wire and the anti-corrosion coated pipe, the anti-corrosion coat pipe may be damaged during the construction work, making repair work a major undertaking.
さらに■のライニング法では、斜材ケーブルワイヤー架
設後、斜材綱線に人力にて防食テープ（マット）を樹脂
（接着剤）で互層に重ね合せることにより防食層を作る
ため非常に非能率的な工法である。また斜材全長にわた
って作業足場が必要となるため、橋梁が長大化すると作
業足場の確保が非常に難しくなる。Furthermore, in the lining method (■), after the diagonal cable wires have been erected, anti-corrosion tape (mat) is manually layered with resin (adhesive) on the diagonal cable wires in alternate layers to create an anti-corrosion layer, which is extremely inefficient. It is a construction method. In addition, since scaffolding is required for the entire length of the diagonal members, it becomes extremely difficult to secure scaffolding as the bridge becomes longer.
これらのことから近年は、自走式ロボットによるライニ
ング法も検討されている。しかし防食マットと樹脂の積
層による防食層を作製するには至っておらず、樹脂層の
ピンホール、樹脂そのものの透気性（オーダーは非常に
小さい）のため長期間完全な被覆を持続することは難し
く、防食性は劣っている。For these reasons, in recent years, lining methods using self-propelled robots have also been considered. However, it has not yet been possible to create an anti-corrosion layer by laminating an anti-corrosion mat and resin, and it is difficult to maintain complete coverage for a long period of time due to pinholes in the resin layer and the air permeability of the resin itself (which is very small in order). , its corrosion resistance is poor.
この発明は前述した事情に鑑みて創案されたもので、そ
の目的は既設斜材ケーブルに安全で容易かつ能率的に被
覆を施すことのできる防食被覆方法を提供することにあ
る。The present invention was devised in view of the above-mentioned circumstances, and its purpose is to provide an anti-corrosion coating method that can safely, easily and efficiently coat existing diagonal cables.
（課題を解決するための手段〕
この発明によれば予じめ斜材ケーブルを取付けて吊構造
物を支持し、その後この既設斜材ケーブルにＦＩ？Ｐ外
套管を被せるようにして取付けると共に、前記既設斜材
ケーブルにおける一方取付基端側および他方取付基端側
に相当する前記外套管の任意位置に透孔を穿設する。(Means for Solving the Problems) According to the present invention, a diagonal cable is installed in advance to support a suspended structure, and then the existing diagonal cable is covered with an FI?P mantle pipe and attached, A through hole is bored at an arbitrary position of the mantle tube corresponding to one attachment base end side and the other attachment base end side of the existing diagonal cable.
次にこの各透孔の穿設位置における前記既設斜材ケーブ
ルの一方取付基端側にグラウト材注入部を、また他方取
付基端側にグラウト材排出部をそれぞれ取付はバンドよ
って固定し、前記グラウト材注入部から、前記外套管と
既設斜材ケーブルとの間隙にグラウト材を注入して、斜
材ケーブル全長に防食被覆を施すこととする。Next, a grout injection part is attached to one side of the existing diagonal cable at the drilling position of each through hole, and a grout discharge part is fixed to the other side of the existing diagonal cable with a band. A grout material is injected into the gap between the mantle tube and the existing diagonal cable from the grout material injection part to apply an anti-corrosion coating to the entire length of the diagonal cable.
そして既設斜材ケーブルと外套管との間隙に注入したグ
ラウト材で、既設斜材ケーブルの防食被覆を施すもので
ある。The grout material is injected into the gap between the existing diagonal cable and the mantle tube to provide anti-corrosion coating to the existing diagonal cable.
Ｃ実 施 例〕
以下この発明の被覆方法を、図示する実施例によって説
明する。C Embodiment] The coating method of the present invention will be described below with reference to illustrated embodiments.
まずこの発明の被覆方法を行うために使用する防食被覆
装置を説明する。First, an anticorrosive coating device used to carry out the coating method of the present invention will be explained.
防食被覆装置１Ｅ１（第１図および第２図参照）は、吊
構造物２を支持している既設斜材ケーブル３に被せたＦ
ＲＰ外套管４と、この外套管４の既設斜材ケーフル３の
一方取付基端側および他方取付基端側における透孔穿設
位置に取付けられているグラウト材注入部５およびグラ
ウト材排出部６と、このグラウト材注入部５およびグラ
ウト材排出部６を外套管４に取付ける取付はバンド７と
、グラウト材注入部５にグラウト材を送るグラウトポン
プ８と、このグラウトポンプ８ヘゲラウド材を供給する
グラウトミキサ９とからなっている。The anti-corrosion coating device 1E1 (see FIGS. 1 and 2) is an anti-corrosion coating device 1E1 (see FIGS. 1 and 2).
The RP mantle pipe 4 and the grout material injection part 5 and the grout material discharge part 6 which are attached to the through-hole drilling positions on one attachment base end side and the other attachment base end side of the existing diagonal kaffle 3 of the mantle pipe 4. The grout injection section 5 and the grout discharge section 6 are attached to the mantle tube 4 by means of a band 7, a grout pump 8 that supplies grout to the grout injection section 5, and a grout pump 8 that supplies the grout material. It consists of a grout mixer 9.
そしてグラウト材注入部５およびグラウト材排出部６は
、取付はバンド７の注入口および排出口７ａに接続され
ているプレンシャーチャンバーｌＯとこのプレッシャー
チャンバー１０に接続されているバルブ１１と、このバ
ルブ１１に接続されている注入および排出用のグラウト
ホース１２とを備えてなっている。なおここで符号１３
は、圧力計である。The grout injection part 5 and the grout discharge part 6 are attached to a pressure chamber lO connected to the injection port and discharge port 7a of the band 7, a valve 11 connected to this pressure chamber 10, and a pressure chamber lO connected to the injection port and discharge port 7a of the band 7. 11 and a grout hose 12 for injection and discharge. Note that here the code 13
is a pressure gauge.
このような構成からなる防食被覆装置１を使用し、本発
明方法である被覆方法によって、既設斜材ケーブル３へ
防食被覆を施すには、次に述べるようにして行う。（第
１図〜第３図参照）ここでは−例として第３図に示すよ
うに吊構造物２である斜張橋の斜材ケーブル３へ、防食
被覆を施す場合について述べる。The anticorrosion coating device 1 having such a configuration is used to apply anticorrosion coating to the existing diagonal cable 3 by the coating method of the present invention in the following manner. (See FIGS. 1 to 3) Here, as an example, a case will be described in which anti-corrosion coating is applied to the cables 3 of a cable-stayed bridge, which is a suspended structure 2, as shown in FIG.
まず吊構造物２である斜張橋の主塔２ａおよび主桁２ｂ
との間に架設されている斜材ケーブル３に、ＦＲＰ外套
管４を被せるようにして取付ける。First, the main tower 2a and main girder 2b of the cable-stayed bridge, which is the suspended structure 2,
The FRP mantle tube 4 is attached so as to cover the diagonal cable 3 constructed between the two.
次に斜材ケーブル３の一方取付基端側（ここでは主桁２
ｂへの取付基端部側）、および他方取付基端側において
、外套管４の任意位置に透孔（図示せず）を穿設する。Next, one installation base end side of the diagonal cable 3 (here, the main girder 2
A through hole (not shown) is bored at an arbitrary position of the mantle tube 4 on the proximal end side for attachment to b) and the proximal end side for attachment to the outer tube 4.
次にこの各透孔の穿設位置における前記既設斜材ケーブ
ルの一方取付基端側にグラウト材注入部５を、また他方
取付基端側にグラウト材排出部６をそれぞれ取付はハン
ド７よって固定し、グラウトポンプ８．グラウトミキサ
９．プレッシャーチャンバー１０．バルブ１１．グラウ
トホース１２等の防食被覆装置１を装着する。Next, a grout injection part 5 is attached to one installation base end of the existing diagonal cable at the drilling position of each of the through holes, and a grout discharge part 6 is installed to the other installation base end, and the installation is fixed using the hand 7. and grout pump8. Grout mixer9. Pressure chamber 10. Valve 11. The anticorrosive coating device 1 such as the grout hose 12 is attached.
次にグラウトポンプ８によりグラウト材を供給し、グラ
ウト材注入部５のプレッシャーチャンバー１０から、外
套管４と斜材ケーブル３との間にグラウト材を充填する
。Next, grout is supplied by the grout pump 8, and the grout is filled between the mantle tube 4 and the diagonal cable 3 from the pressure chamber 10 of the grout injection part 5.
そしてこの外套管４と斜材ケーブル３との間に充填され
たグラウト材が、既設斜材ケーブル３の防食被覆となる
。The grout material filled between the mantle tube 4 and the diagonal cable 3 serves as an anti-corrosion coating for the existing diagonal cable 3.
このようにして、既設斜材ケーブル３の一方取付基端側
位置から、防食被覆を成形しつつ、他方取付基端側位置
（ここでは主塔２ａへの取付基端部側）へも順次成形す
ることで、斜材ケーブル３の全長に防食被覆を施すこと
ができる。In this way, while forming the anti-corrosion coating from one attachment base side position of the existing diagonal cable 3, it is also sequentially formed to the other attachment base side position (here, the attachment base side side to the main tower 2a). By doing so, the entire length of the diagonal cable 3 can be coated with anti-corrosion coating.
〔発明の効果］
この発明は、以上のような構成からなり、次に述べる効
果を有する。[Effects of the Invention] The present invention has the above configuration and has the following effects.
■ 既設斜材ケーブルと外套管との間にグラウト材を充
填しつつ被覆する作業を、既設斜材ケーブルの一方取付
基端側位置から、他方取付基端側位置へも順次行うこと
で、斜材ケーブルの全長に防食被覆を施すことにより、
架設ケーブルの集束。■ By sequentially filling and covering the gap between the existing diagonal cable and the mantle pipe with grout from one side of the existing diagonal cable to the other side, By applying an anti-corrosion coating to the entire length of the material cable,
Bundling of erection cables.
成形の如何を問わないので、斜張橋、吊り橋や吊屋根等
の吊構造物支持用である架設済みケーブルへ防食被覆を
施すことができる。Since it does not matter how it is formed, the anticorrosive coating can be applied to installed cables for supporting suspended structures such as cable-stayed bridges, suspension bridges, and suspended roofs.
そのためケーブルワイヤーの張り替え作業、作業足場の
確保および組立撤去作業等が必要なくなり、短時間で能
率的に行えると共に、安易かつ安全に斜材ケーブルへ防
食被覆を施すことができる。This eliminates the need for re-stretching cable wires, securing work scaffolding, assembling and dismantling, etc. This can be done efficiently in a short time, and the anti-corrosion coating can be easily and safely applied to diagonal cables.
■ 既設斜材ケーブルへの連続成形であるため、信頼性
の高い防食被覆を施すことができると共に、予め斜材ケ
ーブルへ防食パイプを被覆しであるものを取付ける場合
のように架設時に防食パイプを損傷させてしまうような
ことがない。■ Since it is continuously molded onto the existing stay cable, it is possible to apply a highly reliable anti-corrosion coating, and it is also possible to apply anti-corrosion coating at the time of installation, as in the case where the stay cable is coated with anti-corrosion pipe in advance. There is nothing that can cause damage.
そのため斜材ケーブルへ高品質の防食被覆を施すことが
できる。しかもこれを■に述べたことから安価に行うこ
とができる。Therefore, a high quality anti-corrosion coating can be applied to the diagonal cable. Moreover, this can be done at low cost since it was mentioned in (2) above.
■ ＦＲＰ外套管の任意の位置に穿孔すると共に、取付
はハンドを装着するという簡単な作業により、グラウト
材注入部およびグラウト材排出部を容易に形成すること
ができる。(2) A grout injection part and a grout discharge part can be easily formed by simply drilling a hole in an arbitrary position of the FRP jacket pipe and attaching a hand.
第１図はこの発明の防食被覆方法により防食被覆を行う
防食被覆装置を示す概略正面図、第２図は第１図のＡ−
Ａ線拡大概略断面図、第３図はこの発明の防食被覆方法
により防食被覆を行う吊構造物支持用の斜材ケーブルが
使用される斜張橋を示す概略正面図である。
１・・・防食被覆装置、２・・・吊構造物、３・・・既
設斜材ケーブル、４・・・ＦＲＰ外套管、５・・・グラ
ウト材注入部、６・・・グラウト材排出部、７・・・取
付はバンド、７ａ・・・注入口、排出口、８・・・グラ
ウトポンプ、９・・・グラウトミキサ、１０・・・ブレ
ンシャーチャンバ、１１・・・バルブ、１２・・・グラ
ウトホース、１３・・・圧力計。FIG. 1 is a schematic front view showing an anti-corrosion coating apparatus for applying anti-corrosion coating according to the anti-corrosion coating method of the present invention, and FIG.
FIG. 3 is an enlarged schematic sectional view taken along line A, and is a schematic front view showing a cable-stayed bridge in which diagonal cables for supporting suspended structures are coated with anti-corrosion coating by the anti-corrosion coating method of the present invention. DESCRIPTION OF SYMBOLS 1... Corrosion-proof coating device, 2... Hanging structure, 3... Existing diagonal cable, 4... FRP jacket pipe, 5... Grout material injection part, 6... Grout material discharge part , 7... Mounting with band, 7a... Inlet, outlet, 8... Grout pump, 9... Grout mixer, 10... Brencher chamber, 11... Valve, 12... - Grout hose, 13...pressure gauge.
Claims (1)
取付けると共に、前記既設斜材ケーブルにおける一方取
付基端側および他方取付基端側に相当する前記外套管の
任意位置に透孔を穿設し、 この各透孔の穿設位置における前記既設斜材ケーブルの
一方取付基端側にグラウト材注入部を、また他方取付基
端側にグラウト材排出部をそれぞれ取付けバンドよって
固定し、 前記グラウト材注入部から、前記外套管と既設斜材ケー
ブルとの間隙にグラウト材を注入して防食被覆にするこ
とを特徴とする吊構造物支持用斜材ケーブルの防食被覆
方法。[Scope of Claims] An FRP mantle tube is installed so as to cover the existing diagonal cable, and the mantle tube is transparent at any position corresponding to one attachment base end side and the other attachment base end side of the existing diagonal cable. Holes are drilled, and a grout injection part is fixed to one mounting base end side of the existing diagonal cable at the drilling position of each of the through holes, and a grout discharge part is fixed to the other mounting base end side using a mounting band. An anti-corrosion coating method for a diagonal cable for supporting a suspended structure, characterized in that grout is injected from the grout injection part into the gap between the mantle pipe and the existing diagonal cable to form an anti-corrosion coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20197390A JPH0485403A (en) | 1990-07-30 | 1990-07-30 | Method for applying anti-corrosive coating of suspended structure supporting diagonal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20197390A JPH0485403A (en) | 1990-07-30 | 1990-07-30 | Method for applying anti-corrosive coating of suspended structure supporting diagonal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0485403A true JPH0485403A (en) | 1992-03-18 |
Family
ID=16449833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20197390A Pending JPH0485403A (en) | 1990-07-30 | 1990-07-30 | Method for applying anti-corrosive coating of suspended structure supporting diagonal cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0485403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330841A (en) * | 2018-03-06 | 2018-07-27 | 中铁四局集团第二工程有限公司 | Concrete pylon cable guide pipe accurate-location device and its localization method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575925A (en) * | 1980-06-03 | 1982-01-12 | Hiroyuki Kanai | Traveler for spinning frame |
| JPS58113284A (en) * | 1981-12-28 | 1983-07-06 | Shinko Kosen Kogyo Kk | Pouring material for corrosion protection of cable |
| JPH0194103A (en) * | 1987-02-13 | 1989-04-12 | Dainippon Glass Kogyo Kk | Blique material of oblique tensioned bridge |
-
1990
- 1990-07-30 JP JP20197390A patent/JPH0485403A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575925A (en) * | 1980-06-03 | 1982-01-12 | Hiroyuki Kanai | Traveler for spinning frame |
| JPS58113284A (en) * | 1981-12-28 | 1983-07-06 | Shinko Kosen Kogyo Kk | Pouring material for corrosion protection of cable |
| JPH0194103A (en) * | 1987-02-13 | 1989-04-12 | Dainippon Glass Kogyo Kk | Blique material of oblique tensioned bridge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330841A (en) * | 2018-03-06 | 2018-07-27 | 中铁四局集团第二工程有限公司 | Concrete pylon cable guide pipe accurate-location device and its localization method |
| CN108330841B (en) * | 2018-03-06 | 2024-05-07 | 中铁四局集团有限公司 | Accurate positioning device and positioning method for cable guide pipe of concrete cable tower |
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