JPH0483009A - Cable stayed bridge cable jacket protecting tube - Google Patents
Cable stayed bridge cable jacket protecting tubeInfo
- Publication number
- JPH0483009A JPH0483009A JP2194969A JP19496990A JPH0483009A JP H0483009 A JPH0483009 A JP H0483009A JP 2194969 A JP2194969 A JP 2194969A JP 19496990 A JP19496990 A JP 19496990A JP H0483009 A JPH0483009 A JP H0483009A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- taper
- flange
- mantle
- tube
- 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.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 239000000853 adhesive Substances 0.000 abstract description 9
- 230000001070 adhesive effect Effects 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Ropes Or Cables (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、斜張橋のケーブルの腐食等を防止すべくこれ
を被覆する外套保護管に係り、更に詳しくは、前記外套
保護管を斜張橋ケーブルに被覆施工する際に便宜な、互
いに隣接する外套保護管を接続する構造に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a jacket protection tube that covers cables of cable-stayed bridges to prevent corrosion, etc. The present invention relates to a structure for connecting mutually adjacent mantle protection tubes, which is convenient when coating a tensioned bridge cable.
（従来の技術）
一般に、斜張橋におけるケーブルは、屋外に暴露されて
使用されるので、鋼線の束からなるケーブルが腐食によ
り切断されるのを防止する必要がある。このために、前
記斜張橋ケーブノにを架設する際に、互いに隣接する前
記外套保護管を順次接着剤で首尾連接させて固着し、こ
れをモータウィンチ等の引き上げ手段で引き上げて、前
記外套保護管を架設していた。(Prior Art) Cables in cable-stayed bridges are generally used outdoors and are therefore required to prevent cables made of bundles of steel wires from being cut due to corrosion. For this purpose, when constructing the cable-stayed bridge in the cave, the mantle protection tubes that are adjacent to each other are successively connected and fixed with adhesive, and then pulled up using a pulling means such as a motor winch to remove the mantle protection tubes. A pipe was being installed.
即ち、上記外套保護管は、外観上が全体細長の円筒であ
り、その先端部の内面にテーパ加工し、その後端部を前
記先端部内面に嵌合する形状に加工して形成されるもの
である。よって、外套保護管の後端部表面に接着剤を塗
布し、次段の外套保護管の先端部のテーパ状内面に接着
剤を塗布して、前記外套保護管後端部を次段の外套保護
管先端部に嵌合させて接着し、所要強度が得られるまで
放置もしくは加熱・乾燥ボックスで熱処理を施し、早期
強度を得るようにして固着していた。これを繰り返して
行い、前述の外套保護管の架設を施工していた。That is, the outer protection tube has an overall slender cylindrical appearance, and is formed by tapering the inner surface of the tip and shaping the rear end into a shape that fits into the inner surface of the tip. be. Therefore, adhesive is applied to the surface of the rear end of the mantle protection tube, adhesive is applied to the tapered inner surface of the tip of the next stage mantle protection tube, and the rear end of the mantle protection tube is attached to the next stage mantle protection tube. It was fitted onto the tip of the protective tube and adhered, and was left to stand until the required strength was obtained, or was heat treated in a heating/drying box to obtain early strength. This process was repeated to construct the above-mentioned mantle protection tube.
（発明が解決しようとする課題）
しかしながら、上述の斜張橋外套保護管施工方法では、
互いに隣接する外套保護管の接続に接着剤を使用しこれ
の硬化に時間がかかり工期が長（なると言った問題があ
り、また、前記接着に使用した接着剤を早期乾燥及び硬
化させるために特別の加熱・乾燥ボックスを使用するの
は、施工に手間がかかりコストも嵩むと言ったと言った
欠点が存在した。(Problem to be solved by the invention) However, in the above cable-stayed bridge mantle protection pipe construction method,
Adhesives are used to connect adjacent mantle protective tubes, which takes time to harden, resulting in a long construction period. The disadvantage of using a heating/drying box is that it is time-consuming and costly to install.
本発明は、上記の課題に鑑みてなされたもので、外套保
護管の接続が簡易に行い得てしかも確実に連結接続でき
る構造とした斜張橋ケーブルの外套保護管を提供するこ
とを目的とする。The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a jacket protection tube for a cable-stayed bridge cable that has a structure that allows the connection of the jacket protection tube to be performed easily and to ensure reliable connection. do.
（課題を解決するための手段）
本発明に係る斜張橋ケーブルの外套保護管の上記課題を
解決し、目的を達成するための要旨は、全体細長の合成
樹脂製の円筒であって、斜張橋ケーブルの防蝕用に該ケ
ーブルに被覆拳架設される外套保護管において、前記円
筒の少なくとも一端側に、該一端側の端面に向けて細径
となるテーパ部を形成するとともに、その端面にフラン
ジ部を設け、該テーパ部とフランジ部とに管長手方向に
沿った複数のスリットを設けたことに存し、また、請求
項第２に記載のように、前記円筒のテーパ部とフランジ
部とを設けた側の他端側に、前記テーパ部を内包する内
テーパ部と前記フランジ部に係合する凹溝とからなる嵌
合部を形成したことに存する。(Means for Solving the Problems) The gist of the cable-stayed bridge cable sheath protection tube according to the present invention for solving the above-mentioned problems and achieving the objects is to provide a cable-stayed bridge cable jacket protective tube that is entirely elongated and made of synthetic resin. In a mantle protection tube installed on a cable for corrosion protection of a tension bridge cable, at least one end side of the cylinder is formed with a tapered part that becomes smaller in diameter toward the end face of the one end side, and a tapered part is formed on the end face. A flange portion is provided, and a plurality of slits are provided in the tapered portion and the flange portion along the longitudinal direction of the pipe. The present invention resides in that a fitting portion is formed on the other end side of the side provided with the inner tapered portion and the groove that engages with the flange portion.
（作用）
このように、本発明に係る斜張橋ケーブルの外套保護管
によれば、ケーブルに外套保護管を被覆・架設する際に
前記円筒の少なくとも一端側に設けたテーパ部とフラン
ジ部とを接着剤を併用して、互いに隣接する外套管を首
尾連結することにより迅速に架設施工することができる
。(Function) As described above, according to the jacket protection tube for a cable-stayed bridge cable according to the present invention, when covering and installing the jacket protection tube on the cable, the tapered part and the flange part provided on at least one end side of the cylinder are It is possible to quickly construct the structure by successfully connecting adjacent mantle tubes together with adhesive.
また、請求項第２に記載のようにすれば、外套管の首尾
を順次嵌合させるだけで容易に連結することができる。Further, according to the second aspect of the present invention, the connection can be easily achieved by simply fitting the ends of the mantle tubes one after another.
（実施例）
以下、添付図面に従って、本発明の一実施例を説明する
。第１図は、本発明に係る外套保護管１の一部を破断し
た正面図である。第２図（イ）と第２図（ロ）は同じく
その一部拡大側面図、断面図である。(Example) An example of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partially cutaway front view of a protective mantle 1 according to the present invention. FIG. 2(a) and FIG. 2(b) are a partially enlarged side view and sectional view.
前記外套保護管１は、その材質が繊維強化プラスチック
（以下、ＦＲＰと言う）であり、該外套保護管１の外観
は細長の円筒で、全長路６ ｆｆｈ 外径路１４０ｍ
ｍで、肉厚路４．５ｍｍ程度のものである。The outer protective tube 1 is made of fiber-reinforced plastic (hereinafter referred to as FRP), and the external appearance of the outer protective tube 1 is an elongated cylinder, with a total length of 6 ffh and an outer path of 140 m.
m, and the wall thickness is approximately 4.5 mm.
そして、前記円筒の一端側２に、該一端側２の端面２ａ
に向ｊすて細径となる（略テーパ１／３゜程度）テーパ
部３を形成するとともに、その端面２ａにフランジ部４
を設け、該テーパ部３とフランジ部４とに管長手方向に
沿った複数のスリット５を設けている。Then, an end face 2a of the one end side 2 is attached to one end side 2 of the cylinder.
A tapered portion 3 is formed which becomes smaller in diameter (approximately 1/3 degree of taper) toward the end surface 2a, and a flange portion 4 is formed on the end surface 2a.
A plurality of slits 5 are provided in the tapered portion 3 and the flange portion 4 along the longitudinal direction of the pipe.
該スリット５は、第２図（イ）に示すように、円筒外周
に均等配置にして１２箇所設けられているが、これに限
定されるものでなく６箇所や８箇所もしくは１２箇所以
上にしても良いのは勿論である。As shown in FIG. 2(a), the slits 5 are provided at 12 locations evenly distributed around the outer circumference of the cylinder, but the slits 5 are not limited to this, and may be provided at 6, 8, or 12 or more locations. Of course, it is also good.
前記スリット５によって形成された係合片部５ａは押圧
力によって管半径方向に弾性変形するものである。The engaging piece portion 5a formed by the slit 5 is elastically deformed in the tube radial direction by the pressing force.
更に、第１図及び第２図（ロ）に示すように、前記円筒
のテーパ部３とフランジ部４とを設けた一端側２の他端
側θに、前記チー／ｆ部３を内包する内テーパ部７と前
記フランジ部４に係合する凹溝８とからなる嵌合部９を
設けて、前記外套保護管１を形成する。Further, as shown in FIGS. 1 and 2 (b), the chi/f part 3 is included in the other end θ of the one end side 2 provided with the cylindrical taper part 3 and the flange part 4. A fitting portion 9 consisting of an inner tapered portion 7 and a groove 8 that engages with the flange portion 4 is provided to form the mantle protection tube 1.
この様にしてなる前記外套保護管１を使用するには、ま
ず主桁１０上に接合用の架設足場を構築し、架設用のワ
イヤロープを主桁１０と主塔１１とに架設し、同じく外
套保護管引き上げ用のワイヤロープを張設する。In order to use the mantle protection pipe 1 constructed in this manner, first, a scaffold for joining is constructed on the main girder 10, a wire rope for erection is erected between the main girder 10 and the main tower 11, and Stretch a wire rope to pull up the protection tube.
そして、前記外套保護管１の一端側２に接着剤（二液性
エポキシ樹脂等）を塗布する。次段の外套保護管１の他
端側６の嵌合部９の内テーパ部７にも前記接着剤を塗布
し、前記外套保護管１の一端側２の係合片部５ａを窄め
てこれを次段の外套保護管１の他端側６に嵌合させる（
第２図（ロ）参照）。Then, an adhesive (two-component epoxy resin, etc.) is applied to one end 2 of the protective mantle 1. The adhesive is also applied to the inner tapered part 7 of the fitting part 9 on the other end side 6 of the outer protective tube 1 in the next stage, and the engaging piece 5a on the one end side 2 of the outer protective tube 1 is narrowed. This is fitted to the other end side 6 of the next-stage outer protection tube 1 (
(See Figure 2 (b)).
すると、前記保合片部５ａが、外套保護管１の他端側６
に内挿されている途中では管半径方向内側に変形され、
更に押し込まれてフランジ部４が他端側６の凹溝８に達
するとこれが弾性拡開復帰して前記凹溝８と係合状態に
なり、これを繰り返すことにより、順次外套保護管１を
首尾連結しこれを前記架設用ワイヤローブからハンガー
等で懸吊して前記引き上げ用のワイヤローブで主塔１１
へと順次引き上げる。Then, the retaining piece portion 5a is attached to the other end side 6 of the mantle protection tube 1.
While being inserted into the tube, it is deformed inward in the radial direction of the tube,
When the flange portion 4 is pushed further and reaches the groove 8 on the other end side 6, it elastically expands and returns to engage with the groove 8. By repeating this process, the protective tube 1 is successively removed. This is connected to the main tower 11 by suspending it from the construction wire lobe with a hanger or the like, and using the lifting wire lobe.
Raise it one by one.
次に、外套保護管１の架設が終了したら、ＰＣ鋼線を前
記架設された外套保護管１に内挿してブッシングマシン
等の送り手段で送り、該ＰＣ鋼線を主塔１１と主桁１０
との間で緊張させ架設する。Next, when the construction of the mantle protection pipe 1 is completed, a PC steel wire is inserted into the constructed mantle protection pipe 1 and fed by a feeding means such as a bushing machine.
Build tension between the two.
このようにして、外套保護管１を架設するが、本発明に
係る接続構造では、前記係合片部５ａと凹溝８との係合
が引張り試験の結果、約３５０ｋｇから４００ｋｇの強
度があり、架設中Ｇマ接着剤の併用なしに本機構のみで
架設することも可能であり、斜張橋ケーブルの外套保護
管として充分な強さが有ることが判明した。In this way, the protective jacket tube 1 is constructed, and in the connection structure according to the present invention, the engagement between the engagement piece portion 5a and the groove 8 has a strength of approximately 350 kg to 400 kg as a result of a tensile test. It has been found that it is possible to construct the structure using only this mechanism without using G-MA adhesive during construction, and that it has sufficient strength as a jacket protection tube for cable-stayed bridge cables.
本発明の他の実施例として、第４図乃至第５図に示すよ
うに、外套保護管の両端部に前述と同様なテーパ部１２
、フランジ部１３、スリット１４を設けて外套保護管１
５を形成し、これと別体に前記外套保護管１５の端部と
嵌合する、内チー、Ｎ１１部１６と前記フランジ部１３
に係合する凹溝１７とからなる嵌合部１８を筒内面に設
けたカプラー１９を形成する。そして、このカプラー１
９で前記外套保護管１５の端部を嵌合させることにより
該外套保護管１５を順次首尾連結して、前述と同様に架
設するものである。As another embodiment of the present invention, as shown in Figs.
, a flange portion 13 and a slit 14 are provided to form the outer protection tube 1.
5, and separate from this, an inner chi, N11 part 16 and the flange part 13 that fit with the end of the jacket protection tube 15.
A coupler 19 is formed in which a fitting portion 18 consisting of a groove 17 that engages with the cylinder is provided on the inner surface of the cylinder. And this coupler 1
At step 9, the ends of the mantle protection tubes 15 are fitted together, thereby successively connecting the mantle protection tubes 15, and constructing the mantle protection tubes 15 in the same manner as described above.
本発明に係る斜張橋ケーブルの外套保護管の一実施例を
説明したが、本発明の要旨を変更することなく、種々設
計変更出来るのは勿論である。Although one embodiment of the jacket protective tube of the cable-stayed bridge cable according to the present invention has been described, it goes without saying that various design changes can be made without changing the gist of the present invention.
（発明の効果）
以上説明したように、本発明に係る斜張橋ケーブルの外
套保護管を、少なくとも一端側に、該−端側の端面に向
けて細径となるテーパ部を形成するとともに、その端面
にフランジ部を設け、該テーパ部とフランジ部とに管長
手方向に沿った複数のスリットを設けたので、外套保護
管を工事現場で簡易に架設施工出来ることになり、作業
にも手間が掛からず工期を短縮することができ、工費低
減ともなる。(Effects of the Invention) As explained above, the mantle protection tube of the cable-stayed bridge cable according to the present invention is formed with a tapered portion having a smaller diameter toward the end face on the - end side at least on one end side, and A flange is provided on the end face, and a plurality of slits are provided in the tapered part and the flange along the longitudinal direction of the pipe, so the outer protection pipe can be easily erected at the construction site, making the work less time-consuming. It is possible to shorten the construction period and reduce construction costs.
また、請求項第２に記載のようにすれば、外套保護管だ
けで首尾連結可能で迅速な施工作業が確保され、工期短
縮に大きく貢献できる。Further, according to the second aspect of the present invention, it is possible to successfully connect the outer protection tubes alone, and quick construction work is ensured, which greatly contributes to shortening the construction period.
第１図は、本発明に係る外套保護管の一部を破断した正
面図、第２図（イ）と第２図（ロ）は同じくその一部拡
大側面図、断面図、第３図は、外套保護管を使用した状
態を示す説明図、第４図乃至第５図は、本発明の他の実
施例に係る使用状態を示す説明図、同じくその一部を破
断した正面図である。
１・・・外套保護管、２・・・一端側、２ａ・・・端面
、３、１２・・・テーパ部、４．１３・・・フランジ部
、５、 １４・・・スリ ッ ト、 ５ａ・・・係合片
部、６・・・外套保護管の他端側、７・・・内テーパ部
、８・・・凹溝、９・・・嵌合部、１０・・・主桁、１
１・・・主塔、１９・・・カプラー
特 許 出 願 人 日本メンテツク 株式会社同
栗本化成工業 株式会社第１図
第３図
第４図
第５図FIG. 1 is a partially cutaway front view of the mantle protection tube according to the present invention, FIGS. 2(a) and 2(b) are a partially enlarged side view and sectional view, and FIG. FIGS. 4 and 5 are explanatory diagrams showing a state in which the mantle protection tube is used, and FIGS. 4 and 5 are explanatory diagrams showing a state in which another embodiment of the present invention is used, and a partially cutaway front view thereof. DESCRIPTION OF SYMBOLS 1... Mantle protection tube, 2... One end side, 2a... End surface, 3, 12... Taper part, 4.13... Flange part, 5, 14... Slit, 5a ... Engaging piece part, 6... Other end side of the mantle protection tube, 7... Inner tapered part, 8... Concave groove, 9... Fitting part, 10... Main girder, 1
1...Main tower, 19...Coupler Patent applicant Nippon Mentetsu Co., Ltd.
Kurimoto Chemical Industry Co., Ltd. Figure 1 Figure 3 Figure 4 Figure 5
Claims (2)
ーブルの防蝕用に該ケーブルに被覆・架設される外套保
護管において、 前記円筒の少なくとも一端側に、該一端側の端面に向け
て細径となるテーパ部を形成するとともに、その端面に
フランジ部を設け、該テーパ部とフランジ部とに管長手
方向に沿った複数のスリットを設けたことを特徴として
なる斜張橋ケーブルの外套保護管。(1) In a mantle protective tube which is an entirely elongated cylinder made of synthetic resin and which is covered and installed on a cable-stayed bridge cable for corrosion protection, on at least one end side of the cylinder, on the end face of the one end side. A cable-stayed bridge cable characterized by forming a tapered part that becomes smaller in diameter towards the end, a flange part on the end face thereof, and a plurality of slits along the longitudinal direction of the pipe in the tapered part and the flange part. protective mantle.
側に、前記テーパ部を内包する内テーパ部と前記フラン
ジ部に係合する凹溝とからなる嵌合部を形成したことを
特徴としてなる請求項第１に記載の斜張橋ケーブルの外
套保護管。(2) A fitting portion consisting of an inner tapered portion that encloses the tapered portion and a groove that engages with the flange portion is formed on the other end side of the cylinder on the side where the tapered portion and the flange portion are provided. The jacket protection tube for a cable-stayed bridge cable according to claim 1, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2194969A JPH0759804B2 (en) | 1990-07-25 | 1990-07-25 | Mantle protection tube for cable-stayed bridge cable and erection method of mantle protection tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2194969A JPH0759804B2 (en) | 1990-07-25 | 1990-07-25 | Mantle protection tube for cable-stayed bridge cable and erection method of mantle protection tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0483009A true JPH0483009A (en) | 1992-03-17 |
| JPH0759804B2 JPH0759804B2 (en) | 1995-06-28 |
Family
ID=16333356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2194969A Expired - Fee Related JPH0759804B2 (en) | 1990-07-25 | 1990-07-25 | Mantle protection tube for cable-stayed bridge cable and erection method of mantle protection tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0759804B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08312854A (en) * | 1995-05-18 | 1996-11-26 | Ushio Kogyo Kk | Connecting structure of steel pipe and construction method for connecting and inserting of steel pipe |
| JPH10179493A (en) * | 1996-12-25 | 1998-07-07 | Sanyo Electric Co Ltd | Arm axis fixing structure and dishwasher |
| JP2007255685A (en) * | 2006-03-27 | 2007-10-04 | Jfe Pipe Fitting Mfg Co Ltd | Pipe joint |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604688A (en) * | 1983-06-17 | 1985-01-11 | スロ−プ・インデイケ−タ−・カンパニ− | Tubular conduit connecting system |
| JPH0194103A (en) * | 1987-02-13 | 1989-04-12 | Dainippon Glass Kogyo Kk | Blique material of oblique tensioned bridge |
-
1990
- 1990-07-25 JP JP2194969A patent/JPH0759804B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604688A (en) * | 1983-06-17 | 1985-01-11 | スロ−プ・インデイケ−タ−・カンパニ− | Tubular conduit connecting system |
| JPH0194103A (en) * | 1987-02-13 | 1989-04-12 | Dainippon Glass Kogyo Kk | Blique material of oblique tensioned bridge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08312854A (en) * | 1995-05-18 | 1996-11-26 | Ushio Kogyo Kk | Connecting structure of steel pipe and construction method for connecting and inserting of steel pipe |
| JPH10179493A (en) * | 1996-12-25 | 1998-07-07 | Sanyo Electric Co Ltd | Arm axis fixing structure and dishwasher |
| JP2007255685A (en) * | 2006-03-27 | 2007-10-04 | Jfe Pipe Fitting Mfg Co Ltd | Pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0759804B2 (en) | 1995-06-28 |
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