JP4312587B2 - Communication cable laying method and communication cable support structure - Google Patents

Communication cable laying method and communication cable support structure Download PDF

Info

Publication number
JP4312587B2
JP4312587B2 JP2003423438A JP2003423438A JP4312587B2 JP 4312587 B2 JP4312587 B2 JP 4312587B2 JP 2003423438 A JP2003423438 A JP 2003423438A JP 2003423438 A JP2003423438 A JP 2003423438A JP 4312587 B2 JP4312587 B2 JP 4312587B2
Authority
JP
Japan
Prior art keywords
communication cable
branch
support
pipe
guide 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.)
Expired - Fee Related
Application number
JP2003423438A
Other languages
Japanese (ja)
Other versions
JP2005185013A (en
Inventor
岳人 牧
伊三郎 八木
勝 山河
孝治 麻生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanki Engineering Co Ltd
Ashimori Industry Co Ltd
Ashimori Engineering Co Ltd
Original Assignee
Sanki Engineering Co Ltd
Ashimori Industry Co Ltd
Ashimori Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanki Engineering Co Ltd, Ashimori Industry Co Ltd, Ashimori Engineering Co Ltd filed Critical Sanki Engineering Co Ltd
Priority to JP2003423438A priority Critical patent/JP4312587B2/en
Publication of JP2005185013A publication Critical patent/JP2005185013A/en
Application granted granted Critical
Publication of JP4312587B2 publication Critical patent/JP4312587B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Details Of Indoor Wiring (AREA)
  • Electric Cable Installation (AREA)

Description

本発明は、下水道管等の管路内に敷設される通信ケーブルの敷設方法及び通信ケーブルの支持構造に関する。   The present invention relates to a method for laying a communication cable laid in a pipeline such as a sewer pipe and a support structure for the communication cable.

近年、高速・超高速ネットワーク構築等の目的のために、光ファイバーケーブル等の通信ケーブルを、既設の下水道管やガス導管等の地中配管内に敷設することが行われつつある。このように、地中配管内に通信ケーブルを敷設する方式は、従来から採用されている架設方式と比べて、美観を損なうことがなく、さらには、火災や地震等の災害に対しても強いという長所を有する。   In recent years, for the purpose of constructing a high-speed / ultra-high-speed network, communication cables such as optical fiber cables are being laid in underground pipes such as existing sewer pipes and gas pipes. In this way, the method of laying communication cables in underground pipes does not impair the aesthetics compared to the conventional installation method, and is also resistant to disasters such as fires and earthquakes. It has the advantages of

このような地中配管内に通信ケーブルを敷設する方法としては、例えば、下水道管等の本管内に幹通信ケーブルを敷設した後に、本管から分岐して地上の各建物に至る分岐管に幹通信ケーブルから分岐する分岐通信ケーブルを敷設する方法がある（例えば、特許文献１参照）。この敷設方法においては、本管内には、幹通信ケーブルが挿通された鞘管が配設された状態から分岐管に分岐通信ケーブルを敷設する際に、鞘管に長尺なガイド部材を嵌合させ、このガイド部材内に形成された空間部に分岐通信ケーブルを挿通して、分岐通信ケーブルをガイド部材で鞘管に沿わせた状態に支持することで、分岐通信ケーブルが管路内で弛むのを防止するようになっている。   As a method of laying communication cables in such underground pipes, for example, after laying a trunk communication cable in a main pipe such as a sewer pipe, the main branch is branched from the main pipe to a branch pipe that reaches each building on the ground. There is a method of laying a branch communication cable that branches from a communication cable (see, for example, Patent Document 1). In this laying method, when a branch communication cable is laid in a branch pipe from a state where a sheath pipe through which a trunk communication cable is inserted is installed in the main pipe, a long guide member is fitted into the sheath pipe. The branch communication cable is inserted into the space formed in the guide member, and the branch communication cable is supported by the guide member in a state along the sheath tube. It is designed to prevent this.

特開２００３−２２４９１１号公報JP 2003-224911 A

前記特許文献１に記載の通信ケーブルの敷設方法においては、内部に空間部が形成されて複雑な断面形状を有する長尺なガイド部材を、鞘管全体に嵌合させる必要があるため、部品コスト及び取り付けの際の施工コストが高くなってしまう。   In the method for laying a communication cable described in Patent Document 1, it is necessary to fit a long guide member having a complicated cross-sectional shape with a space formed therein to the entire sheath tube. And the construction cost at the time of attachment will become high.

本発明の目的は、取り付け及び取り外しが容易で且つ低コストな支持構造により、地中に敷設された管路を使用して各建物毎に通信ケーブルを敷設する方法を提供することである。   An object of the present invention is to provide a method for laying a communication cable for each building using a pipe line laid in the ground with a support structure that is easy to attach and detach and is low in cost.

課題を解決するための手段及び発明の効果Means for Solving the Problems and Effects of the Invention

第１の発明の通信ケーブルの敷設方法は、本管とこの本管から分岐する分岐管とを含む管路内に通信ケーブルを敷設する方法であって、幹通信ケーブルが挿通されたガイド管に外嵌する嵌合部とこの嵌合部に一体的に設けられた支持部とを有する複数の支え材を、互いに間隔を空けて前記ガイド管に装着する支え材装着工程と、前記幹通信ケーブルから分岐する分岐通信ケーブルを、前記ガイド管に装着された前記支え材の前記支持部に支持させる分岐通信ケーブル支持工程と、前記分岐通信ケーブル支持工程の後で、前記ガイド管と、前記支え材と、前記ガイド管の外側に位置する前記分岐通信ケーブルとを、カバー部材で覆う被覆工程と、前記被覆工程の後で、前記本管内に前記ガイド管を配設するガイド管配設工程と、前記分岐通信ケーブルを、前記分岐管内に配設する分岐通信ケーブル配設工程と、を備えることを特徴とするものである。 Laying method of the communication cable of the first aspect of the present invention is a method for laying communication cables in conduit comprising a branch pipe which branches from the main pipe and the main pipe, the guide pipe stem communication cable is inserted A supporting member mounting step of mounting a plurality of supporting members having a fitting part to be fitted on and a support part provided integrally with the fitting part on the guide pipe at intervals, and the trunk communication cable; A branch communication cable supporting step for supporting the branch communication cable branched from the support portion of the support member mounted on the guide tube, and the guide tube and the support member after the branch communication cable support step. A covering step of covering the branch communication cable located outside the guide tube with a cover member; and a guide tube disposing step of disposing the guide tube in the main tube after the covering step; The branch communication packet Bull, a branch communication cable arranged step of disposing said branch pipe, it is characterized in that comprises a.

この通信ケーブルの敷設方法においては、本管内に敷設される幹通信ケーブルから分岐する分岐通信ケーブルを分岐管内に敷設する。分岐通信ケーブルは、マンホール内に配設された分岐ボックス等においてガイド管に挿通された幹通信ケーブルから分岐されて、本管から分岐管が分岐する分岐管口を経由して、分岐管内に敷設される。ここで、分岐通信ケーブルは、分岐ボックス等で幹通信ケーブルから分岐された後、分岐管口までは、幹通信ケーブルが挿通されるガイド管の外側に位置することになるため、本管内で弛んでしまう虞がある。そこで、ガイド管に複数の支え材を互いに間隔を空けて装着し、これら複数の支え材により本管内の分岐通信ケーブルを支持することで、複数の支え材からなる簡易な支持構造により、容易に分岐通信ケーブルをガイド管に沿わせて支持することができ、施工コストを低減できる。
また、幹通信ケーブルが挿通されたガイド管は、複数の支え材が装着された状態で本管内に配設される。
また、ガイド管と複数の支え材と分岐通信ケーブルとをカバー部材で覆うことにより、カバー部材により本管内の分岐通信ケーブルが保護されるため、高圧水による管路内の洗浄時などに分岐通信ケーブルが損傷するのを防止できる。さらに、複数の支え材の間における分岐通信ケーブルの弛みを確実に防止できる。 In this installation method for a communication cable, a branch communication cable which branches from the trunk communication cable Ru laid the tube is laid in the branch pipe. The branch communication cable is branched from the trunk communication cable inserted in the guide pipe in the branch box etc. installed in the manhole, and laid in the branch pipe via the branch pipe branching from the main pipe to the branch pipe Is done. Here, since the branch communication cable is branched from the trunk communication cable by a branch box or the like, the branch communication cable is located outside the guide pipe through which the trunk communication cable is inserted, so that the branch communication cable is relaxed in the main pipe. There is a risk of falling. Therefore, by attaching a plurality of support members to the guide tube at intervals, and supporting the branch communication cable in the main pipe with these support members, a simple support structure consisting of a plurality of support members makes it easy. The branch communication cable can be supported along the guide tube, and the construction cost can be reduced.
The guide tube stem communication cable is inserted is disposed in the tube in a state where multiple brace is attached.
In addition, since the branch communication cable in the main pipe is protected by the cover member by covering the guide pipe, the plurality of supporting members, and the branch communication cable with the cover member, branch communication is performed when cleaning the pipe line with high-pressure water. The cable can be prevented from being damaged. Furthermore, it is possible to reliably prevent the branch communication cable from loosening between the plurality of supporting members.

第２の発明の通信ケーブルの敷設方法は、前記第１の発明において、前記幹通信ケーブルと前記分岐通信ケーブルとを、前記管路内に設けられる分岐ボックスを介して接続する接続工程を備えることを特徴とする。 A method for laying a communication cable according to a second aspect of the present invention includes the connecting step of connecting the trunk communication cable and the branch communication cable via a branch box provided in the pipe line in the first invention. It is characterized by.

第３の発明の通信ケーブルの敷設方法は、前記第１又は第２の発明において、前記嵌合部のうちの、前記ガイド管の長手方向に対して両側の部分に、２つの前記支持部が夫々一体的に設けられていることを特徴とするものである。このように、嵌合部と支持部とが一体的に構成されているため、支え材のガイド管への装着作業が容易である。また、嵌合部の両側に２つの支持部が夫々設けられているため、分岐通信ケーブルを、ガイド管の両側の位置のうち、より分岐させやすい側に配置することができる。さらに、複数の分岐通信ケーブルを支え材により支持する場合には、それら複数の分岐通信ケーブルをガイド管の両側に適宜振り分けることができるため、複数の分岐通信ケーブルをバランスよく支持できる。   In the method for laying a communication cable according to a third aspect of the present invention, in the first or second aspect of the present invention, the two support portions are provided on both sides of the fitting portion with respect to the longitudinal direction of the guide tube. Each is provided integrally. As described above, since the fitting portion and the support portion are integrally configured, it is easy to mount the support member on the guide tube. Further, since the two support portions are provided on both sides of the fitting portion, the branch communication cable can be arranged on the side where the branch is easier to branch out of the positions on both sides of the guide tube. Further, when the plurality of branch communication cables are supported by the support member, since the plurality of branch communication cables can be appropriately distributed to both sides of the guide tube, the plurality of branch communication cables can be supported in a balanced manner.

第４の発明の通信ケーブルの敷設方法は、前記第１〜第３の何れかの発明において、前記支持部は、前記嵌合部の外周に沿って延びており、前記嵌合部と前記支持部との間に前記分岐通信ケーブルが挟持されることを特徴とするものである。従って、嵌合部と支持部との間に分岐通信ケーブルが挟持されて、分岐通信ケーブルが支え材により確実に支持されるため、分岐通信ケーブルが支え材から外れて弛んでしまうことがない。   According to a fourth aspect of the present invention, there is provided the communication cable laying method according to any one of the first to third aspects, wherein the support portion extends along an outer periphery of the fitting portion. The branch communication cable is sandwiched between the two parts. Therefore, the branch communication cable is sandwiched between the fitting portion and the support portion, and the branch communication cable is reliably supported by the support member, so that the branch communication cable is not detached from the support member and is not loosened.

第５の発明の通信ケーブルの敷設方法は、前記第１〜第４の何れかの発明において、前記カバー部材が、側面部の一部が開いた略Ｃ字形の断面形状を有する略円筒状部材であることを特徴とするものである。 According to a fifth aspect of the present invention, there is provided the communication cable laying method according to any one of the first to fourth aspects , wherein the cover member has a substantially C-shaped cross-sectional shape with a part of the side surface opened. It is characterized by being.

第６の発明の通信ケーブルの支持構造は、本管内に配設され且つ幹通信ケーブルが挿通されるガイド管に外嵌する嵌合部とこの嵌合部に一体的に設けられ嵌合部の外周に沿って延びる支持部とを有する複数の支え材が、互いに間隔を空けてガイド管に装着され、各々の支え材の嵌合部と支持部との間に、幹通信ケーブルから分岐する分岐通信ケーブルが挟持されて支持され、さらに、前記ガイド管と、前記支え材と、前記ガイド管の外側に位置する前記分岐通信ケーブルとが、カバー部材で覆われていることを特徴とするものである。本管内で、分岐通信ケーブルが複数の支え材により支持されるため、簡単な支持構造により容易に分岐通信ケーブルの弛みを防止することができる。
さらに、ガイド管と支え材と分岐通信ケーブルとがカバー部材で覆われていることにより、カバー部材により本管内の分岐通信ケーブルが保護されるため、高圧水による管路内の洗浄時などに分岐通信ケーブルが損傷するのを防止できる。また、複数の支え材の間における分岐通信ケーブルの弛みを確実に防止できる。 According to a sixth aspect of the present invention, there is provided a communication cable supporting structure comprising: a fitting portion that is disposed in a main pipe and is externally fitted to a guide pipe through which a trunk communication cable is inserted; A plurality of support members having support portions extending along the outer periphery are attached to the guide pipe at intervals from each other, and branches from the trunk communication cable between the support portions and the fitting portions of the support members. A communication cable is sandwiched and supported , and the guide tube, the support member, and the branch communication cable located outside the guide tube are covered with a cover member. is there. Since the branch communication cable is supported by a plurality of support members in the main pipe, it is possible to easily prevent the branch communication cable from being slack with a simple support structure.
In addition, since the guide pipe, support material, and branch communication cable are covered with the cover member, the branch communication cable in the main pipe is protected by the cover member. It is possible to prevent the communication cable from being damaged. Further, it is possible to reliably prevent the branch communication cable from loosening between the plurality of support members.

第７の発明の通信ケーブルの支持構造は、前記第６の発明において、前記カバー部材が、側面部の一部が開いた略Ｃ字形の断面形状を有する略円筒状部材であることを特徴とするものである。 According to a seventh aspect of the present invention, there is provided the communication cable supporting structure according to the sixth aspect , wherein the cover member is a substantially cylindrical member having a substantially C-shaped cross-sectional shape with a part of the side surface opened. To do.

本発明の実施の形態について説明する。本実施形態は、下水道管の内部に光ファイバーケーブル等の通信ケーブルを敷設する場合に本発明を適用した一例である。   Embodiments of the present invention will be described. This embodiment is an example in which the present invention is applied when a communication cable such as an optical fiber cable is laid inside a sewer pipe.

図１に示すように、下水道管の本管１には、マンホール２，３が接続されている。さらに、マンホール２，３の間の本管１から、分岐管口４ａにおいて分岐管４が上方へ分岐し、分岐管４は地上のビルや家屋等の建物６に隣接して設置された分岐管桝５にまで接続されている。   As shown in FIG. 1, manholes 2 and 3 are connected to a main pipe 1 of a sewer pipe. Furthermore, the branch pipe 4 branches upward from the main pipe 1 between the manholes 2 and 3 at the branch pipe port 4a, and the branch pipe 4 is installed adjacent to a building 6 such as a building or a house on the ground. It is connected to 桝 5.

一般に本管１は道路に沿って深さ数ｍの位置に敷設されており、本管１の略上方に分岐管口４ａが形成され、分岐管４は分岐管口４ａから略鉛直方向へ延びた後、上斜め方向に途中で角度を変えて分岐管桝５に接続されている。   In general, the main pipe 1 is laid at a depth of several meters along the road, a branch pipe port 4a is formed substantially above the main pipe 1, and the branch pipe 4 extends from the branch pipe port 4a in a substantially vertical direction. After that, it is connected to the branch pipe rod 5 by changing the angle in the middle in the upward oblique direction.

そして、この本管１及び分岐管４を含む管路７には、光ファイバーケーブル等の通信ケーブルが敷設される。まず、本管１には、幹通信ケーブル８が後述のテンションメンバー９とともにガイド管１０内に挿通された状態で配設される。図２、図３に示すように、このガイド管１０の内部空間は、仕切り部１０ａにより上下に区切られており、上側の空間にはテンションメンバー９が挿通され、一方、下側の空間には幹通信ケーブル８が挿通される。   A communication cable such as an optical fiber cable is laid on the pipe line 7 including the main pipe 1 and the branch pipe 4. First, a trunk communication cable 8 is disposed in the main pipe 1 in a state of being inserted into a guide pipe 10 together with a tension member 9 described later. As shown in FIGS. 2 and 3, the internal space of the guide tube 10 is vertically divided by a partition portion 10 a, and the tension member 9 is inserted into the upper space, while the lower space is The trunk communication cable 8 is inserted.

マンホール２，３の壁部には、テンションメンバー９に張力を付与するテンション装置１１が取り付けられている。このテンション装置１１は、例えば、一方のマンホール２側に取り付けられたテンションメンバー固定用フックと、他方のマンホール３側に取り付けられたテンションメンバー巻上げ用のウインチなどで構成されている。そして、テンション装置１１によりテンションメンバー９に張力を付与することにより、ガイド管１０をつり上げてその内部の幹通信ケーブル８を本管１内部の略上方の位置に配設する。   A tension device 11 that applies tension to the tension member 9 is attached to the walls of the manholes 2 and 3. The tension device 11 includes, for example, a tension member fixing hook attached to one manhole 2 side and a tension member winding winch attached to the other manhole 3 side. Then, by applying tension to the tension member 9 by the tension device 11, the guide tube 10 is lifted and the trunk communication cable 8 inside thereof is disposed at a substantially upper position inside the main tube 1.

尚、テンションメンバー９としては、ポリパラフェニレンベンゾビスオキサゾール（ＰＢＯ）繊維、アラミド繊維、炭素繊維、金属繊維、ガラス繊維などの高強度低伸度性繊維よりなる、ロープ、紐、ベルトなどの長尺体や、ステンレスワイヤーなどを使用することができる。   The tension member 9 is a rope, string, belt or the like made of high-strength low-stretch fibers such as polyparaphenylene benzobisoxazole (PBO) fiber, aramid fiber, carbon fiber, metal fiber, glass fiber, etc. A scale, a stainless steel wire, etc. can be used.

また、本管１内に敷設された幹通信ケーブル８の長さが比較的長く、テンション装置１１によりテンションメンバー９に付加された張力だけでは、ガイド管１０の弛みを十分に防止することが難しい場合には、耐食バネ鋼等により形成された略Ｃ字状の複数の弛み防止材１２を、所定の間隔を空けて本管１内に配設しておく。   Further, the length of the trunk communication cable 8 laid in the main pipe 1 is relatively long, and it is difficult to sufficiently prevent the guide pipe 10 from being loosened only by the tension applied to the tension member 9 by the tension device 11. In this case, a plurality of substantially C-shaped slack preventing materials 12 formed of corrosion-resistant spring steel or the like are disposed in the main pipe 1 with a predetermined interval.

このように、本管１内に幹通信ケーブル８が敷設された状態で、幹通信ケーブル８から分岐する分岐通信ケーブル１３を分岐管内に敷設する。分岐通信ケーブル１３は、マンホール内に設けられた分岐ボックス１４において、幹通信ケーブル８から分岐している。ここで、図１〜図３に示すように、マンホール２から分岐管口４ａまで、この分岐通信ケーブル１３は、幹通信ケーブル８から分岐してガイド管１０の外側に位置するため、テンションメンバー９に張力を付与してガイド管１０をつり上げても、分岐通信ケーブル１３には張力が作用せず、本管内で弛んでしまう虞がある。   In this manner, the branch communication cable 13 branched from the trunk communication cable 8 is laid in the branch pipe in a state where the trunk communication cable 8 is laid in the main pipe 1. The branch communication cable 13 branches from the trunk communication cable 8 in a branch box 14 provided in the manhole. Here, as shown in FIGS. 1 to 3, since the branch communication cable 13 branches from the trunk communication cable 8 and is located outside the guide pipe 10 from the manhole 2 to the branch pipe port 4 a, the tension member 9. Even if the guide pipe 10 is lifted by applying tension to the branch communication cable 13, there is a possibility that the branch communication cable 13 does not act on the branch communication cable and may be loosened in the main pipe.

そこで、図２、図３に示すように、ガイド管１０に、分岐通信ケーブル１３を支持する為の複数の支え材１５を、互いに間隔を空けて装着する。この支え材１５は耐食バネ鋼で形成されており、ガイド管１０に外嵌可能な略Ｃ字状の嵌合部１５ａと、この嵌合部１５ａに一体的に設けられた２つの支持部１５ｂとを有する。支え材１５には、嵌合部１５ａと支持部１５ｂとが溶接された後に焼き入れ加工が施されている。このように支え材１５がバネ鋼で形成されていることから、嵌合部１５ａを広げてガイド管１０に容易に外嵌させることができる。   Therefore, as shown in FIGS. 2 and 3, a plurality of supporting members 15 for supporting the branch communication cable 13 are attached to the guide tube 10 at intervals. The support member 15 is made of corrosion-resistant spring steel, and has a substantially C-shaped fitting portion 15a that can be fitted on the guide tube 10 and two support portions 15b that are integrally provided on the fitting portion 15a. And have. The support member 15 is quenched after the fitting portion 15a and the support portion 15b are welded. Thus, since the supporting member 15 is formed of spring steel, the fitting portion 15a can be widened and easily fitted to the guide tube 10.

図３に示すように、２つの支持部１５ｂは、嵌合部１５ａのうちの、ガイド管１０の長手方向（図１の左右方向）の両側部分（図３における嵌合部１５ａの左右両側部分）下方から夫々嵌合部１５ａの外周に沿って上方へ延びている。そのため、幹通信ケーブル８から分岐した分岐通信ケーブル１３は、ガイド管１０の両側において支持部１５ｂと嵌合部１５ａの間で確実に挟持され、支え材１５から外れにくくなっている。また、嵌合部１５ａの両側に支持部１５ｂが設けられているため、分岐管口４ａの位置に応じて、分岐通信ケーブル１３を、ガイド管１０の両側の位置のうちの、より分岐させやすい側に位置させることができる。尚、幹通信ケーブル８から複数本の分岐通信ケーブル１３が分岐している場合には、それら複数本の分岐通信ケーブル１３をガイド管１０の両側に適宜振り分けて、２つの支持部１５ｂの何れかに支持させる。そして、本管１の長手方向に間隔を空けて設けられた複数の支え材１５により分岐通信ケーブル１３が支持されるため、分岐通信ケーブル１３の弛みがなくなる。   As shown in FIG. 3, the two support portions 15 b are formed on both side portions of the fitting portion 15 a in the longitudinal direction (left and right direction in FIG. 1) of the guide tube 10 (left and right side portions of the fitting portion 15 a in FIG. 3). ) It extends upward along the outer periphery of the fitting portion 15a from below. Therefore, the branch communication cable 13 branched from the trunk communication cable 8 is securely clamped between the support portion 15 b and the fitting portion 15 a on both sides of the guide tube 10, and is not easily detached from the support member 15. Further, since the support portions 15b are provided on both sides of the fitting portion 15a, the branch communication cable 13 is more likely to be branched out of the positions on both sides of the guide tube 10 depending on the position of the branch pipe port 4a. Can be located on the side. When a plurality of branch communication cables 13 are branched from the trunk communication cable 8, the plurality of branch communication cables 13 are appropriately distributed to both sides of the guide tube 10, and one of the two support portions 15b. To support. Since the branch communication cable 13 is supported by the plurality of support members 15 provided at intervals in the longitudinal direction of the main pipe 1, the branch communication cable 13 is not loosened.

さらに、図４〜図６に示すように、ガイド管１０と複数の支え材１５とを略円筒形状のポリエチレン製のカバー部材１６により覆う。カバー部材１６は、略Ｃ字形の断面形状を有し、部分的に外部に開放された形状となっている。そして、カバー部材１６の開放部を拡げた状態で、カバー部材１６をガイド管１０及び複数の支え材１５に下方から被せてから、拡げる力を解放して、カバー部材１６をその弾性力によりガイド管１０と支え材１５に装着させる。さらに、カバー部材１６がガイド管１０から外れないように、カバー部材１６の両端部を夫々カバー固定材１７で固定して、カバー部材１６をガイド管１０に取り付ける。カバー固定材１７としては、前述の弛み防止材１２と同様に、耐食バネ鋼等により形成された略Ｃ字状のものを使用できる。このように、ガイド管１０と複数の支え材１５を覆うカバー部材１６を取り付けることで、ガイド管１０の外側に位置する分岐通信ケーブル１３が保護されるため、高圧水による管路７内の洗浄時などに分岐通信ケーブル１３が損傷するのを防止できる。さらに、複数の支え材１５の間における分岐通信ケーブル１３の弛みを確実に防止でき、本管１内を流れる下水中のゴミ等が分岐通信ケーブル１３に絡まることがないため、下水の流れが阻害されない。 Further, as shown in FIGS. 4 to 6, the guide tube 10 and the plurality of supporting members 15 are covered with a substantially cylindrical polyethylene cover member 16. The cover member 16 has a substantially C-shaped cross-sectional shape and is partially open to the outside. Then, the cover member 16 is covered with the guide tube 10 and the plurality of supporting members 15 from below with the open portion of the cover member 16 expanded , and then the expanding force is released, and the cover member 16 is guided by its elastic force. The tube 10 and the support member 15 are attached. Further, the cover member 16 is fixed to the guide tube 10 by fixing both ends of the cover member 16 with the cover fixing member 17 so that the cover member 16 does not come off the guide tube 10. As the cover fixing member 17, a substantially C-shaped member made of corrosion-resistant spring steel or the like can be used as in the above-described slack preventing member 12. Since the branch communication cable 13 located outside the guide tube 10 is protected by attaching the cover member 16 that covers the guide tube 10 and the plurality of supporting members 15 in this way, the inside of the pipeline 7 is washed with high-pressure water. It is possible to prevent the branch communication cable 13 from being damaged at times. Further, it is possible to reliably prevent the branch communication cable 13 from slackening between the plurality of support members 15, and the sewage dust flowing in the main pipe 1 is not entangled with the branch communication cable 13. Not.

次に、前述のようにして支え材１５及びカバー部材１６により支持された分岐通信ケーブル１３を、分岐管４内に敷設する。図７に示すように、分岐通信ケーブル１３が下水の流れを阻害しないように、複数の弛み防止材１８により分岐管４の管壁に沿わせて分岐管桝５（図１参照）に引き込む。ここで、複数の弛み防止材１８としては、本管１の弛み防止材１２（図１参照）と同様に、耐食バネ鋼で形成されたものを用いることができる。   Next, the branch communication cable 13 supported by the support member 15 and the cover member 16 as described above is laid in the branch pipe 4. As shown in FIG. 7, the branch communication cable 13 is drawn into the branch pipe rod 5 (see FIG. 1) along the pipe wall of the branch pipe 4 by the plurality of slack preventing materials 18 so that the flow of the sewage is not hindered. Here, as the plurality of slack preventing materials 18, a material formed of corrosion-resistant spring steel can be used similarly to the slack preventing material 12 of the main pipe 1 (see FIG. 1).

あるいは、図８に示すように、分岐通信ケーブル１３を分岐テンションメンバー１９内に挿通してから、本管１に幹通信ケーブル８を敷設する場合と同様に、分岐管桝５に設けられたテンション装置２０（図１参照）により分岐テンションメンバー１９に張力を付与することにより、分岐通信ケーブル１３を分岐管４の管壁に沿って敷設するようにしてもよい。ここで、分岐テンションメンバー１９としては、ステンレス製のフレキシブルパイプ等、分岐通信ケーブル１３の許容曲げ半径以上の曲げ半径特性を有し、張力にも耐えられるものを用いる。尚、図７、図８においては、カバー部材１６の図示を省略している。   Alternatively, as shown in FIG. 8, after the branch communication cable 13 is inserted into the branch tension member 19 and the trunk communication cable 8 is laid on the main pipe 1, the tension provided on the branch pipe rod 5 is provided. The branch communication cable 13 may be laid along the pipe wall of the branch pipe 4 by applying tension to the branch tension member 19 by the device 20 (see FIG. 1). Here, as the branch tension member 19, a stainless steel flexible pipe or the like that has a bending radius characteristic greater than the allowable bending radius of the branch communication cable 13 and can withstand tension is used. 7 and 8, the cover member 16 is not shown.

尚、前述の説明においては、分岐通信ケーブル１３を支え材１５で支持してから分岐通信ケーブル１３を分岐管４内に配設したが、分岐通信ケーブル１３を分岐管４内に配設した後に、支え材１５をガイド管１０に取り付けるようにしてもよい。   In the above description, the branch communication cable 13 is disposed in the branch pipe 4 after the branch communication cable 13 is supported by the support member 15. However, after the branch communication cable 13 is disposed in the branch pipe 4. The support member 15 may be attached to the guide tube 10.

以上説明した本発明の実施形態によれば、次のような効果が得られる。
幹通信ケーブル８から分岐して、ガイド管１０の外側に位置する分岐通信ケーブル１３が、間隔を空けてガイド管１０に装着された複数の支え材１５により本管１内で支持されるため、簡単な支持構造により分岐通信ケーブル１３の弛みを極力抑えることができ、施工コストを低減できる。 According to the embodiment of the present invention described above, the following effects can be obtained.
Since the branch communication cable 13 branched from the trunk communication cable 8 and positioned outside the guide pipe 10 is supported in the main pipe 1 by a plurality of support members 15 attached to the guide pipe 10 at intervals. The slack of the branch communication cable 13 can be suppressed as much as possible by a simple support structure, and the construction cost can be reduced.

ガイド管１０に外嵌する嵌合部１５ａと分岐通信ケーブル１３を支持する支持部１５ｂとが一体化されて支え材１５が構成されているため、ガイド管１０からの支え材１５の取り付け作業及び取り外し作業を容易に行うことができる。また、マンホール２，３間に存在する複数の分岐管４のうちのある所定の分岐管４に分岐通信ケーブル１３が敷設されている状態（即ち、一部の建物にのみ分岐通信ケーブル１３が引き込まれている状態）から、他の分岐管４にも分岐通信ケーブル１３を敷設して分岐管桝５に分岐通信ケーブル１３を引き込む場合に、分岐通信ケーブル１３を幹通信ケーブル８から分岐させる際に支え材１５を一度取り外す作業を容易に行うことができる。   Since the support portion 15 is configured by integrating the fitting portion 15a that fits outside the guide tube 10 and the support portion 15b that supports the branch communication cable 13, the mounting operation of the support member 15 from the guide tube 10 and Removal work can be performed easily. Further, the branch communication cable 13 is laid on a predetermined branch pipe 4 among the plurality of branch pipes 4 existing between the manholes 2 and 3 (that is, the branch communication cable 13 is drawn into only some buildings). When the branch communication cable 13 is laid on the other branch pipe 4 and the branch communication cable 13 is pulled into the branch pipe rod 5, the branch communication cable 13 is branched from the trunk communication cable 8. The operation of removing the support member 15 once can be easily performed.

また、嵌合部１５ａの両側に２つの支持部１５ｂが設けられているため、分岐管口４ａの位置に応じて、分岐通信ケーブル１３を、ガイド管１０の両側の位置のうちの、分岐管４へ分岐させやすい側に配置することができる。さらに、複数の分岐通信ケーブル１３を支え材１５により支持する場合には、それら複数の分岐通信ケーブル１３をガイド管１０の両側に適宜振り分けることができ、複数の分岐通信ケーブル１３をバランスよく支持できる。さらに、２つの支持部１５ｂは、嵌合部１５ａの両側部分から嵌合部１５ａの外周に沿って延びており、嵌合部１５ａと支持部１５ｂとの間に分岐通信ケーブル１３が挟持されるため、支え材１５により分岐通信ケーブル１３を確実に支持することができ、分岐通信ケーブル１３が支え材１５から外れて弛んでしまうことがない。   Further, since the two support portions 15b are provided on both sides of the fitting portion 15a, the branch communication cable 13 is connected to the branch pipe of the positions on both sides of the guide pipe 10 according to the position of the branch pipe port 4a. 4 can be arranged on the side where it can be easily branched. Further, when the plurality of branch communication cables 13 are supported by the support member 15, the plurality of branch communication cables 13 can be appropriately distributed to both sides of the guide tube 10, and the plurality of branch communication cables 13 can be supported in a balanced manner. . Further, the two support portions 15b extend from both side portions of the fitting portion 15a along the outer periphery of the fitting portion 15a, and the branch communication cable 13 is sandwiched between the fitting portion 15a and the support portion 15b. Therefore, the branch communication cable 13 can be reliably supported by the support member 15, and the branch communication cable 13 does not come loose from the support member 15 and become loose.

さらに、ガイド管１０と複数の支え材１５とが円筒形状のカバー部材１６で覆われるため、ガイド管１０の外側に位置する分岐通信ケーブル１３がカバー部材１６により保護され、分岐通信ケーブル１３の損傷を防止できる。また、複数の支え材１５の間における分岐通信ケーブル１３の弛みを確実に防止されるため、本管１内のゴミ等が分岐通信ケーブル１３に絡まず、下水の流れが阻害されない。   Further, since the guide tube 10 and the plurality of supporting members 15 are covered with the cylindrical cover member 16, the branch communication cable 13 located outside the guide tube 10 is protected by the cover member 16, and the branch communication cable 13 is damaged. Can be prevented. Moreover, since the slack of the branch communication cable 13 between the plurality of support members 15 is reliably prevented, dust or the like in the main pipe 1 does not get entangled with the branch communication cable 13 and the flow of sewage is not hindered.

次に、前記実施形態に種々の変更を加えた変更形態について説明する。但し、前記実施形態と同様の構成を有するものについては、同じ符号を付して適宜その説明を省略する。
１］複数の支え材１５の間が短く分岐通信ケーブル１３の弛みが小さい場合や、外力がほとんど作用せず分岐通信ケーブル１３が損傷する虞がない場合には、カバー部材１６を省略して、複数の支え材１５のみで分岐通信ケーブル１３を支持するようにしてもよい。 Next, modified embodiments in which various modifications are made to the embodiment will be described. However, components having the same configuration as in the above embodiment are given the same reference numerals and description thereof is omitted as appropriate.
1] When the space between the support members 15 is short and the slack of the branch communication cable 13 is small, or when there is no possibility that the branch communication cable 13 is damaged due to almost no external force, the cover member 16 is omitted. The branch communication cable 13 may be supported only by the plurality of support members 15.

２］前記実施形態では、本管１内に幹通信ケーブル８を配設するとともに、幹通信ケーブル８から分岐通信ケーブル１３を分岐させて分岐管４内に配設するようにしているが、幹通信ケーブル８が既に本管１内に配設されており、その後に、分岐通信ケーブル１３を既設の幹通信ケーブル８から分岐させて各建物に分岐通信ケーブル１３を引き込む場合にも本発明を適用できる。   2] In the above embodiment, the trunk communication cable 8 is arranged in the main pipe 1 and the branch communication cable 13 is branched from the trunk communication cable 8 and arranged in the branch pipe 4. The present invention is also applied to the case where the communication cable 8 is already provided in the main pipe 1 and then the branch communication cable 13 is branched from the existing trunk communication cable 8 and the branch communication cable 13 is drawn into each building. it can.

３］前記実施形態は、下水道管内に光ファイバーケーブル等の通信ケーブルを敷設する場合に本発明を適用した一例であるが、ガス管、水道管、雨水管あるいは電力ケーブル管等、他の管路にも本発明を適用可能である。   3] The above embodiment is an example in which the present invention is applied to a case where a communication cable such as an optical fiber cable is installed in a sewer pipe. The present invention is applicable.

本発明の実施形態に係る通信ケーブルの敷設構造（支え材装着状態）を示す全体概略図である。1 is an overall schematic diagram showing a laying structure (supporting state) of a communication cable according to an embodiment of the present invention. 支え材が装着されたガイド管の部分拡大斜視図である。It is a partial expansion perspective view of the guide tube with which the support material was mounted | worn. 図１のIII-III線断面図である。It is the III-III sectional view taken on the line of FIG. 通信ケーブルの敷設構造（カバー部材装着状態）を示す全体概略図である。It is the whole schematic figure which shows the laying structure (cover member mounting state) of a communication cable. カバー部材が装着されたガイド管の部分拡大斜視図である。It is a partial expansion perspective view of a guide pipe with which a cover member was equipped. ガイド管の断面図であり、（ａ）は図５のXIA-XIA線断面図、（ｂ）は図５のXIB-XIB線断面図である。6A is a cross-sectional view of the guide tube, FIG. 6A is a cross-sectional view taken along line XIA-XIA in FIG. 5, and FIG. 6B is a cross-sectional view taken along line XIB-XIB in FIG. 分岐通信ケーブルを分岐管に敷設する工程を示す図である。It is a figure which shows the process of laying a branch communication cable in a branch pipe. 分岐通信ケーブルを分岐管に敷設する別の工程を示す図である。It is a figure which shows another process of laying a branch communication cable in a branch pipe.

符号の説明Explanation of symbols

１ 本管
４ 分岐管
７ 管路
８ 幹通信ケーブル
１０ ガイド管
１３ 分岐通信ケーブル
１５ 支え材
１５ａ 嵌合部
１５ｂ 支持部
１６ カバー部材
３４ ガイド管
DESCRIPTION OF SYMBOLS 1 Main pipe 4 Branch pipe 7 Pipe line 8 Trunk communication cable 10 Guide pipe 13 Branch communication cable 15 Support material 15a Fitting part 15b Support part 16 Cover member 34 Guide pipe

Claims (7)

本管とこの本管から分岐する分岐管とを含む管路内に通信ケーブルを敷設する方法であって、
幹通信ケーブルが挿通されたガイド管に外嵌する嵌合部とこの嵌合部に一体的に設けられた支持部とを有する複数の支え材を、互いに間隔を空けて前記ガイド管に装着する支え材装着工程と、
前記幹通信ケーブルから分岐する分岐通信ケーブルを、前記ガイド管に装着された前記支え材の前記支持部に支持させる分岐通信ケーブル支持工程と、
前記分岐通信ケーブル支持工程の後で、前記ガイド管と、前記支え材と、前記ガイド管の外側に位置する前記分岐通信ケーブルとを、カバー部材で覆う被覆工程と、
前記被覆工程の後で、前記本管内に前記ガイド管を配設するガイド管配設工程と、
前記分岐通信ケーブルを、前記分岐管内に配設する分岐通信ケーブル配設工程と、
を備えることを特徴とする通信ケーブルの敷設方法。 A method of laying a communication cable in a pipeline including a main pipe and a branch pipe branched from the main pipe ,
A plurality of supporting members having a fitting portion that is externally fitted to a guide tube through which the trunk communication cable is inserted and a support portion that is provided integrally with the fitting portion are attached to the guide tube at intervals. Support material mounting process;
A branch communication cable supporting step of supporting a branch communication cable branched from the trunk communication cable on the support portion of the support member attached to the guide tube;
After the branch communication cable support step, a covering step of covering the branch communication cable positioned outside the guide tube, the support member, and the guide tube with a cover member;
After the covering step, a guide tube disposing step of disposing the guide tube in the main tube,
A branch communication cable arrangement step of arranging the branch communication cable in the branch pipe;
A method for laying a communication cable, comprising: 前記幹通信ケーブルと前記分岐通信ケーブルとを、前記管路内に設けられる分岐ボックスを介して接続する接続工程を備えることを特徴とする請求項１に記載の通信ケーブルの敷設方法。The communication cable laying method according to claim 1, further comprising a connection step of connecting the trunk communication cable and the branch communication cable via a branch box provided in the pipeline. 前記嵌合部のうちの、前記ガイド管の長手方向に対して両側の部分に、２つの前記支持部が夫々一体的に設けられていることを特徴とする請求項１又は２に記載の通信ケーブルの敷設方法。   3. The communication according to claim 1, wherein two of the support portions are integrally provided on both sides of the fitting portion with respect to the longitudinal direction of the guide tube. 4. How to lay cables. 前記支持部は、前記嵌合部の外周に沿って延びており、前記嵌合部と前記支持部との間に前記分岐通信ケーブルが挟持されることを特徴とする請求項１〜３の何れかに記載の通信ケーブルの敷設方法。   The said support part is extended along the outer periphery of the said fitting part, The said branch communication cable is clamped between the said fitting part and the said support part, The any one of Claims 1-3 characterized by the above-mentioned. A method for laying a communication cable according to claim 1. 前記カバー部材が、側面部の一部が開いた略Ｃ字形の断面形状を有する略円筒状部材であることを特徴とする請求項１〜４の何れかに記載の通信ケーブルの敷設方法。 The method for laying a communication cable according to any one of claims 1 to 4, wherein the cover member is a substantially cylindrical member having a substantially C-shaped cross-sectional shape in which a part of a side surface portion is open . 本管内に配設され且つ幹通信ケーブルが挿通されるガイド管に外嵌する嵌合部とこの嵌合部に一体的に設けられ嵌合部の外周に沿って延びる支持部とを有する複数の支え材が、互いに間隔を空けてガイド管に装着され、
各々の支え材の嵌合部と支持部との間に、幹通信ケーブルから分岐する分岐通信ケーブルが挟持されて支持され、
さらに、前記ガイド管と、前記支え材と、前記ガイド管の外側に位置する前記分岐通信ケーブルとが、カバー部材で覆われていることを特徴とする通信ケーブルの支持構造。 A plurality of fitting portions that are disposed in the main pipe and are fitted on the guide pipe through which the trunk communication cable is inserted, and a support portion that is provided integrally with the fitting portion and extends along the outer periphery of the fitting portion. Support members are attached to the guide tube at intervals,
A branch communication cable branched from the trunk communication cable is sandwiched and supported between the fitting portion and the support portion of each support member ,
Furthermore, the guide structure, the support member, and the branch communication cable located outside the guide pipe are covered with a cover member . 前記カバー部材が、側面部の一部が開いた略Ｃ字形の断面形状を有する略円筒状部材であることを特徴とする請求項６に記載の通信ケーブルの支持構造。The communication cable support structure according to claim 6, wherein the cover member is a substantially cylindrical member having a substantially C-shaped cross-sectional shape in which a part of a side surface portion is open.
JP2003423438A 2003-12-19 2003-12-19 Communication cable laying method and communication cable support structure Expired - Fee Related JP4312587B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003423438A JP4312587B2 (en) 2003-12-19 2003-12-19 Communication cable laying method and communication cable support structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003423438A JP4312587B2 (en) 2003-12-19 2003-12-19 Communication cable laying method and communication cable support structure

Publications (2)

Publication Number Publication Date
JP2005185013A JP2005185013A (en) 2005-07-07
JP4312587B2 true JP4312587B2 (en) 2009-08-12

Family

ID=34783971

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003423438A Expired - Fee Related JP4312587B2 (en) 2003-12-19 2003-12-19 Communication cable laying method and communication cable support structure

Country Status (1)

Country Link
JP (1) JP4312587B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118074034B (en) * 2024-04-20 2024-06-25 河北鹏博通信设备有限公司 PVC solid wall pipe for underground communication

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6086028U (en) * 1983-11-15 1985-06-13 株式会社デンソー wiring fittings
JPH07222333A (en) * 1994-01-27 1995-08-18 Hino Motors Ltd Clip for wire and pipe
JP2978070B2 (en) * 1994-09-30 1999-11-15 株式会社コンセック Cable laying method and device
JP4425497B2 (en) * 2001-07-09 2010-03-03 芦森工業株式会社 Communication cable laying structure in underground conduit
JP4437877B2 (en) * 2001-03-30 2010-03-24 芦森工業株式会社 Communication cable laying method in underground conduit and laying pipe working device

Also Published As

Publication number Publication date
JP2005185013A (en) 2005-07-07

Similar Documents

Publication Publication Date Title
US7341403B2 (en) Method of constructing information correspondence pipe, constructed structure, and construction member
JP4312587B2 (en) Communication cable laying method and communication cable support structure
JP4601012B2 (en) Information pipe construction method for existing pipes and information pipe construction structure for existing pipes
JP3746681B2 (en) Optical cable laying method in sewer pipes
JP2851169B2 (en) How to lay optical cable in sewage / drainage pipeline
JP4437961B2 (en) How to install a branch communication cable
JP4417891B2 (en) Laying optical fiber cable
JP4919646B2 (en) Manhole structure and cable laying method
JP2007308280A (en) Cable drum, cable winding method, and cable laying method
KR100925138B1 (en) A Buoy For Temporary Installation Of Optical Cable
JP5557369B2 (en) Cable laying structure and cable laying method
JP4319014B2 (en) Tension member hoisting device
JP4818838B2 (en) Optical fiber cable holding device
JP4369942B2 (en) Cable piping system and cable wiring method
JP3725434B2 (en) Pipe laying cable
JP2008249917A (en) Distribution line cable disposed between columns and method of retaining cable
JP4219627B2 (en) Construction method of information-compatible tube, construction structure thereof, and construction member thereof
JP4184726B2 (en) Fixing member and communication cable fixing method using the same
JP5954645B1 (en) Method for preventing floating of underground structure and structure thereof
JP4291553B2 (en) Communication cable cover and communication cable protection structure installed in the manhole
JP3980258B2 (en) Laying optical fiber cable
JP3872687B2 (en) Fixing optical fiber cable in the house
KR200216768Y1 (en) Junction box hanger of fiber optic cable
JP4163035B2 (en) Method for fixing the connecting portion of an optical fiber cable and its fixing structure
JPH10336847A (en) Communication cable manhole

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20061205

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080911

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20081007

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20081208

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090512

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090513

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120522

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130522

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130522

Year of fee payment: 4

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130522

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140522

Year of fee payment: 5

LAPS Cancellation because of no payment of annual fees