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JP4387924B2 - Pipe support structure - Google Patents
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JP4387924B2 - Pipe support structure - Google Patents

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JP4387924B2
JP4387924B2 JP2004320484A JP2004320484A JP4387924B2 JP 4387924 B2 JP4387924 B2 JP 4387924B2 JP 2004320484 A JP2004320484 A JP 2004320484A JP 2004320484 A JP2004320484 A JP 2004320484A JP 4387924 B2 JP4387924 B2 JP 4387924B2
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circular tube
flexible corrugated
corrugated metal
circular
tube
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JP2006136074A (en
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嘉夫 山崎
嘉明 齋藤
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エヌ・ティ・ティ・インフラネット株式会社
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  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Supports For Pipes And Cables (AREA)
  • Electric Cable Installation (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Description

本発明は、円管の支持及び移動規制に用いられる円管支持構造に関するものである。   The present invention relates to a circular tube support structure used for supporting and moving a circular tube.

従来、光ファイバーケーブルや通信ケーブル等のケーブルを地中に配索する場合に、一定の間隔をおいて設置されたマンホールまたはハンドホール間を結ぶように外管を地中に埋設し、この外管内に複数さや管を設置して、このさや管内にケーブルを通すことが行われている。
このような場合、地震などの振動によってさや管が移動してしまう可能性がある。このような移動が生じると、さや管の管端が上記した外管の開口孔内に入ってしまうなどして管理し難くなってしまう虞があるため、マンホールやハンドホールの内壁にさや管の管端を支持することが行われている。
Conventionally, when cables such as optical fiber cables and communication cables are routed underground, an outer tube is buried in the ground so as to connect manholes or handholes installed at regular intervals. A plurality of sheaths are installed in the sheath, and a cable is passed through the sheath.
In such a case, the sheath tube may move due to vibration such as an earthquake. If such movement occurs, the sheath end may enter the outer tube opening hole and become difficult to manage. Supporting the end of the tube is performed.

このように、地中に埋設された外管内に収容される複数のさや管をマンホールまたはハンドホールの内壁に支持する装置として、それぞれさや管を挿通可能な多数のさや管支持孔が形成された支持板と、支持板に支持された多数本のさや管を挿通可能なさや管挿通孔を有するリング板状を成すとともに、そのさや管挿通孔に臨む部分に多数個のバンド固定片が周方向に所定間隔をおいて板面に対して起立形成された固定板とを有するものがある。この装置では、支持板のさや管支持孔に支持され、固定板のさや管挿通孔に挿通されたさや管の端末部外周を固定バンドでバンド固定片に共締めするようになっている。(特許文献1参照)
特開2003−259524号公報
Thus, as a device for supporting a plurality of sheath pipes accommodated in the outer tube buried in the ground on the inner wall of the manhole or hand hole, a number of sheath tube holes that allow the sheath tubes to be inserted are formed. It forms a ring plate shape with a support plate and a sheath insertion hole through which many sheaths supported by the support plate can be inserted, and a number of band fixing pieces are circumferentially facing the sheath insertion hole. And a fixed plate formed upright with respect to the plate surface at a predetermined interval. In this device, the sheath is supported by the sheath support hole and the sheath is inserted into the sheath through hole, and the outer periphery of the end of the sheath tube is fastened to the band fixing piece with the fixing band. (See Patent Document 1)
JP 2003-259524 A

上記したような円管を支持する装置においては、予め形成されたさや管支持孔及びバンド固定片等によって支持可能なさや管の本数が限られてくるので、新たな増設は困難となりうる。また、さや管支持孔及びバンド固定片は、支持板或いは固定板の周縁部分にしか設けられておらず、外管内に効率的にさや管布設を行っているとは言えない。また、部品点数も多く、構成が複雑なため製造が困難となるとともに費用が掛かってしまう。   In an apparatus for supporting a circular pipe as described above, the number of sheath pipes that can be supported by a preformed sheath pipe support hole, band fixing piece, or the like is limited. In addition, the sheath support hole and the band fixing piece are provided only at the peripheral portion of the support plate or the fixing plate, and it cannot be said that the sheath tube is efficiently laid in the outer tube. In addition, since the number of parts is large and the configuration is complicated, manufacturing becomes difficult and expensive.

そこで、本発明は、円管の移動を規制しながらより多くの円管を支持可能にするとともに、構成を単純にした円管支持構造を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a circular tube support structure that can support a larger number of circular tubes while restricting the movement of the circular tube, and has a simple configuration.

上記目的を達成するために、請求項1に係る発明は、マンホールまたはハンドホールの内壁面に開口する開口孔に複数収容される円管を支持するとともに前記内壁面に固定される円管支持部材と、前記円管における前記円管支持部材の外側と前記円管支持部材及び前記内壁面の間とに設けられる円管移動ストッパとからなり、前記円管支持部材は、波型に形成された可撓性波型金物を複数設けて構成され、各可撓性波型金物間に前記円管を支持することを特徴としている。   In order to achieve the above object, the invention according to claim 1 provides a circular tube support member that supports a plurality of circular tubes accommodated in an opening hole that opens in an inner wall surface of a manhole or hand hole and is fixed to the inner wall surface. And a circular tube moving stopper provided between the outer side of the circular tube support member in the circular tube and between the circular tube support member and the inner wall surface, and the circular tube support member is formed in a corrugated shape. A plurality of flexible corrugated metal fittings are provided, and the circular tube is supported between the flexible corrugated metal fittings.

請求項1に係る発明によれば、マンホールまたはハンドホールの内壁面に固定される可撓性波型金物に円管が支持されることになる。この可撓性波型金物は波型に形成されているため、収容される円管同士の間に余計な隙間を設けることなく円管を集約的に支持することができる。また、それらの上下方向及び水平方向への移動を規制することができる。さらに、円管の管端には、可撓性波型金物を間に介在可能とするようにして、一対の円管移動ストッパが設けられている。これにより、円管が管軸方向へ移動してしまうことを防ぐことができる。
したがって、円管の移動を規制しながら開口孔内での収容率の向上を図ることができる。
また、可撓性波型金物を円管移動ストッパの間で支持することで円管の移動が規制されるので、構成を簡素化できるとともに部品点数を削減することができ、コストの削減を図ることが可能となる。
さらに、上記可撓性波型金物は、波型であり可撓性を有するため、水平方向の引張りや圧縮力に対して追従して変形でき、その結果、破損しにくい。
According to the first aspect of the invention, the circular tube is supported by the flexible corrugated metal fitting fixed to the inner wall surface of the manhole or handhole. Since this flexible corrugated metal object is formed in a corrugated shape, it is possible to collectively support the circular tubes without providing an extra gap between the accommodated circular tubes. Moreover, the movement to those up-down directions and a horizontal direction can be controlled. Furthermore, a pair of circular tube moving stoppers are provided at the tube end of the circular tube so that a flexible corrugated metal can be interposed therebetween. Thereby, it can prevent that a circular pipe moves to a pipe-axis direction.
Therefore, the accommodation rate in the opening hole can be improved while restricting the movement of the circular tube.
Further, since the movement of the circular tube is regulated by supporting the flexible corrugated metal piece between the circular tube movement stoppers, the configuration can be simplified and the number of parts can be reduced, thereby reducing the cost. It becomes possible.
Furthermore, since the flexible corrugated metal is corrugated and flexible, it can be deformed following the tensile or compressive force in the horizontal direction and, as a result, is not easily damaged.

以下、本発明の一実施形態について、図1及び図2に基づいて説明する。
円管支持構造10は、マンホールまたはハンドホール等の作業空間11の内壁面12に開口する正面視略正方形の開口孔13を横に跨ぐようにして内壁面12に沿って鉛直に固定される円管支持部材15と、開口孔13内に収容される複数のさや管16のそれぞれの両端に嵌合固定されたダクトスリーブ32(円管)の管端に固定可能な一対の円管移動ストッパ17とから構成される。ここで、ダクトスリーブ32の管端は、上記開口孔13から作業空間11内に突出した状態となっており、上記円管支持構造10は、この突出した管端部分に設けられるものである。
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
The circular tube support structure 10 is a circle that is vertically fixed along the inner wall surface 12 so as to straddle a substantially square opening hole 13 that opens to the inner wall surface 12 of the work space 11 such as a manhole or a hand hole. A pair of circular tube movement stoppers 17 that can be fixed to the tube ends of a duct sleeve 32 (circular tube) fitted and fixed to both ends of each of the tube support member 15 and the plurality of sheath tubes 16 accommodated in the opening hole 13. It consists of. Here, the pipe end of the duct sleeve 32 protrudes into the working space 11 from the opening hole 13, and the circular pipe support structure 10 is provided at the protruding pipe end portion.

まず、円管支持部材15について説明する。
上記円管支持部材15は、上記内壁面12に固定される一対の固定部材19と、これら固定部材19に両端を支持される複数の可撓性波型金物20とから成っており、上記ダクトスリーブ32は、上下に隣り合う可撓性波型金物20同士の間に支持される。
これら一対の固定部材19は、鉄或いはその他の金属板材からなっており、その長手方向両端において、各々ボルト孔21が穿設された固定部22を有している。そして、各ボルト孔21に挿通される固定ボルト24を内壁面12のボルト孔23に螺合させることで、一対の固定部材19が開口孔13の両側の上記内壁面12にそれぞれ長さ方向を上下に配置した姿勢で取り付けられる。
First, the circular tube support member 15 will be described.
The circular tube support member 15 includes a pair of fixing members 19 fixed to the inner wall surface 12 and a plurality of flexible corrugated metal objects 20 supported at both ends by the fixing members 19. The sleeve 32 is supported between the flexible corrugated metal pieces 20 adjacent to each other in the vertical direction.
The pair of fixing members 19 are made of iron or other metal plate material, and have fixing portions 22 in which bolt holes 21 are formed at both ends in the longitudinal direction. Then, the fixing bolts 24 inserted through the respective bolt holes 21 are screwed into the bolt holes 23 of the inner wall surface 12, so that the pair of fixing members 19 have their respective length directions on the inner wall surfaces 12 on both sides of the opening hole 13. It can be mounted in a vertical position.

固定部材19の中央部分には、各固定部22の相互近接側から垂直に立ち上がる連結部25と各連結部25の先端同士を連結させる金物保持部26とが形成されている。両固定部22と両連結部25と金物保持部26とは一体に構成されている。
そして金物保持部26は、上記内壁面12と対向する内面に、その長手方向に並べるように複数の可撓性波型金物20を保持する。
At the central portion of the fixing member 19, there are formed a connecting portion 25 that rises perpendicularly from the adjacent side of each fixing portion 22 and a hardware holding portion 26 that connects the tips of each connecting portion 25. Both the fixing portions 22, both the connecting portions 25, and the hardware holding portion 26 are integrally formed.
The metal holding part 26 holds a plurality of flexible corrugated metal objects 20 on the inner surface facing the inner wall surface 12 so as to be arranged in the longitudinal direction.

上記可撓性波型金物20は、長方形の帯板を厚さ方向に屈曲させたもので、厚さ方向の一方に凸状を成す山部27と同方向に凹状を成す谷部28とを長手方向に交互に有する波型形状に形成されている。山部27と谷部28との各ピッチ間の距離は等しくされている。
そして、このように形成される可撓性波型金物20は、その長さ方向を水平にし、しかも、山部27が上向きに凸状を成すように配置された状態で、上記一対の固定部材19を繋ぐように両端部が両固定部材19の金物保持部26に接続される。このとき、各可撓性波型金物20は、上記金物保持部26に複数設けられ、互いに一定の間隔をおいて上下方向に平行な状態で配置されている。加えて、上下方向で隣り合う可撓性波型金物20同士は、図2において正面視上下対称となるように設けられる。その結果、各可撓性波型金物20は、左右方向に位置が合い且つ上下方向において隣り合う山部27と谷部28とがそれぞれ対向した状態となる。この状態で、一方の可撓性波型金物20と他方の可撓性波型金物20の山部27と谷部28とが互いに最も間隔を空けている部分、つまり上側が山部27とされ、下側が谷部28とされた部分にダクトスリーブ32が挿通される。このとき、両可撓性波型金物20は、そのダクトスリーブ32の外周面に接した状態でダクトスリーブ32を支持することになる。そのため、各可撓性波型金物20の金物保持部26への配置間隔はダクトスリーブ32の外径に合わせた間隔に設定されることになる。
なお、ここで言う可撓性波型金物20は、棒状体で形成することもできる。また、山部27と谷部28とをはっきりと形成せず、円弧状の山部27と谷部28とを交互に形成するように湾曲された緩やかな波型を呈するように形成してもよい。さらに、一対の固定部材19が互いに対向する側の側面に複数の可撓性波型金物20を固定して設けてもよい。
The flexible corrugated metal piece 20 is formed by bending a rectangular strip in the thickness direction, and has a peak portion 27 that is convex in one of the thickness directions and a trough portion 28 that is concave in the same direction. It is formed in a corrugated shape having alternating in the longitudinal direction. The distances between the pitches of the peak portion 27 and the valley portion 28 are equal.
Then, the flexible corrugated metal piece 20 formed in this way has the pair of fixing members in a state where the length direction thereof is horizontal and the ridges 27 are arranged so as to project upward. Both end portions are connected to the hardware holding portions 26 of both the fixing members 19 so as to connect the 19. At this time, a plurality of flexible corrugated metal objects 20 are provided in the metal object holding part 26 and are arranged in a state parallel to the vertical direction at a constant interval. In addition, the flexible corrugated metal objects 20 that are adjacent in the vertical direction are provided so as to be vertically symmetrical in front view in FIG. As a result, each flexible corrugated metal piece 20 is in a state in which the crest 27 and the trough 28 that are aligned in the left-right direction and are adjacent in the up-down direction are opposed to each other. In this state, the peak portion 27 and the valley portion 28 of one flexible corrugated metal piece 20 and the other flexible corrugated metal piece 20 are the most spaced apart from each other, that is, the upper portion is the peak portion 27. The duct sleeve 32 is inserted into a portion where the lower side is the valley portion 28. At this time, both the flexible corrugated metal objects 20 support the duct sleeve 32 in a state of being in contact with the outer peripheral surface of the duct sleeve 32. For this reason, the arrangement interval of the flexible corrugated metal pieces 20 to the hardware holding part 26 is set to an interval according to the outer diameter of the duct sleeve 32.
In addition, the flexible corrugated metal object 20 said here can also be formed with a rod-shaped body. In addition, the peak portions 27 and the valley portions 28 are not clearly formed, and the arc-shaped peak portions 27 and the valley portions 28 are alternately formed so as to exhibit a gentle corrugated shape. Good. Further, a plurality of flexible corrugated metal fittings 20 may be fixedly provided on the side surfaces of the pair of fixing members 19 facing each other.

このように構成された円管支持部材15は、上記開口孔13内において水平方向に並列に配置されている複数のさや管16において、それぞれの両端に嵌合固定された備えられるダクトスリーブ32の管端を、上述したように、各可撓性波型金物20同士の間で支持することになるが、このとき、各ダクトスリーブ32の軸心位置は、それらの上方に位置する可撓性波型金物20の山部27の頂部34と、下方に位置する可撓性波型金物20の谷部28の底部35とを結んだ鉛直に沿う線上に配置されることになる。
また、上記のように支持された隣り合うダクトスリーブ32の間には、両方の外周面に接するようにして、そのダクトスリーブ32よりも上位にある可撓性波型金物20の谷部28と下位の可撓性波型金物20の山部27が存在する。この上位の可撓性波型金物20の谷部28の上に、他のダクトスリーブ32が搭載され、このダクトスリーブ32は、さらにその上位の可撓性波型金物20の山部27によって支持される。また、下位の可撓性波型金物20の山部27の下にも他のさや管が同様に配置される。
The circular tube support member 15 configured as described above includes a plurality of sheath pipes 16 arranged in parallel in the horizontal direction in the opening hole 13, and is provided with duct sleeves 32 that are fitted and fixed at both ends. As described above, the tube ends are supported between the flexible corrugated metal fittings 20. At this time, the axial center positions of the duct sleeves 32 are flexible above them. The top 34 of the crest 27 of the corrugated hardware 20 and the bottom 35 of the trough 28 of the flexible corrugated metal 20 are arranged on a line along the vertical line.
Further, between the adjacent duct sleeves 32 supported as described above, the valley portion 28 of the flexible corrugated metal piece 20 located above the duct sleeve 32 so as to be in contact with both outer peripheral surfaces. There is a peak portion 27 of the lower flexible corrugated metal piece 20. Another duct sleeve 32 is mounted on the trough portion 28 of the upper flexible corrugated metal piece 20, and this duct sleeve 32 is further supported by the peak portion 27 of the upper flexible corrugated metal piece 20. Is done. In addition, other sheaths are similarly arranged below the peak portions 27 of the lower flexible corrugated metal piece 20.

したがって、上述したような可撓性波型金物20によれば、全体が波型形状を呈しているため、可撓性を有し、ダクトスリーブ32の外周面に接触する部分における弾性力が大きくなる。そのため、単にフラットな形状の金物よりも、ダクトスリーブ32に対して摩擦力が大きくなるので、ダクトスリーブ32をより確実に支持することができる。
また、このような可撓性波型金物20は、上述したように可撓性を有していることから、フラットな金物よりも水平方向に対する引張り及び圧縮力に対する強度が高くなる。そのため、固定部材19に接続されている上記両端部の接続部位が破損したり、形状の一部に変形及びせん断が生じたりしてしまうことを防止することができる。これは、可撓性波型金物20全体が可撓性なために、上記した引張りや圧縮のような外力が加わったとしても局部的に応力の集中を起こすことを抑制できるのである。
Therefore, according to the flexible corrugated metal piece 20 as described above, since the whole has a corrugated shape, it has flexibility, and the elastic force at the portion contacting the outer peripheral surface of the duct sleeve 32 is large. Become. Therefore, since the frictional force is greater with respect to the duct sleeve 32 than with a flat-shaped hardware, the duct sleeve 32 can be supported more reliably.
In addition, since the flexible corrugated metal piece 20 has flexibility as described above, the strength against the tensile and compressive force in the horizontal direction is higher than that of the flat metal piece. Therefore, it can prevent that the connection part of the said both ends connected to the fixing member 19 is damaged, or a deformation | transformation and shearing arise in a part of shape. This is because the entire flexible corrugated metal piece 20 is flexible, and even if an external force such as tension or compression described above is applied, it is possible to suppress local stress concentration.

さらに、水平方向で隣り合うダクトスリーブ32同士の上下の隙間を埋めるように、可撓性波型金物20の山部27或いは谷部28が入り込むので、フラットな金物よりも、上下方向に積載されるダクトスリーブ32同士の間に余計な隙間を空けることなく集約して支持することができるので、結果として、開口孔13内へのさや管16の収容効率を高めることができる。
また、上記のように支持されたダクトスリーブ32は、可撓性波型金物20と一体となった状態となり、地震など振動等に対して可撓性波型金物20と共に追随して動くため、可撓性波型金物20からの離脱及びダクトスリーブ32同士の離反等の虞を防止することができる。
Furthermore, since the crest 27 or trough 28 of the flexible corrugated metal fitting 20 enters so as to fill the vertical gap between the adjacent duct sleeves 32 in the horizontal direction, it is loaded in the vertical direction rather than the flat hardware. As a result, it is possible to increase the housing efficiency of the sheath 16 in the opening hole 13.
Further, the duct sleeve 32 supported as described above is in a state of being integrated with the flexible corrugated hardware 20, and moves along with the flexible corrugated hardware 20 against vibrations such as earthquakes. The possibility of separation from the flexible corrugated metal piece 20 and separation of the duct sleeves 32 can be prevented.

次に、円管移動ストッパ17について説明する。
上記円管移動ストッパ17は、ダクトスリーブ32の各々に対して外装可能なリング状に形成されている。その内径は、ダクトスリーブ32の外径に合わせて形成されている。
このように形成される一対の円管移動ストッパ17は、ダクトスリーブ32の管端の管軸方向において円管支持部材15を間に介在させるようにして、互いに一定の間隔を空けて配置される。このとき、一方の円管移動ストッパ17を円管支持部材15の可撓性波型金物20の外側に、他方の円管移動ストッパ17を可撓性波型金物20と上記内壁面12との間に配置することにより、可撓性波型金物20の両側面に円管移動ストッパ17が係止されることになる。なお、これら円管移動ストッパ17は、ダクトスリーブ32の外周面に対して圧止或いは接着剤等で固定される。
ここで、上述した連結部25の立ち上がりの長さ(固定部22と金物保持部26との間の距離)は、固定部材19を上記内壁面12に固定した場合、内壁面12と金物保持部26に保持された可撓性波型金物20との間に、上記のような円管移動ストッパ17を介在可能に設定される。
Next, the circular tube movement stopper 17 will be described.
The circular tube moving stopper 17 is formed in a ring shape that can be packaged with respect to each of the duct sleeves 32. The inner diameter is formed in accordance with the outer diameter of the duct sleeve 32.
The pair of circular tube moving stoppers 17 formed in this way are arranged at a predetermined interval so as to interpose the circular tube support member 15 in the tube axis direction of the tube end of the duct sleeve 32. . At this time, one circular tube movement stopper 17 is disposed outside the flexible corrugated metal piece 20 of the circular tube support member 15, and the other circular tube movement stopper 17 is disposed between the flexible corrugated metal piece 20 and the inner wall surface 12. The circular tube moving stopper 17 is locked to both side surfaces of the flexible corrugated metal piece 20 by being disposed between them. These circular tube moving stoppers 17 are fixed to the outer peripheral surface of the duct sleeve 32 with pressure or an adhesive.
Here, the above-described rising length of the connecting portion 25 (the distance between the fixing portion 22 and the hardware holding portion 26) is equal to the inner wall surface 12 and the hardware holding portion when the fixing member 19 is fixed to the inner wall surface 12. The circular tube moving stopper 17 as described above can be interposed between the flexible corrugated metal piece 20 held by 26.

このように、ダクトスリーブ32の管端に配置された円管移動ストッパ17間に可撓性波型金物20が介在することによって、円管支持構造10が構成される。
そして、ダクトスリーブ32が振動等によって移動しようとするときは、可撓性波型金物20よりも外側に配置される円管移動ストッパ17が、可撓性波型金物20の片側の側面に干渉することによって、ダクトスリーブ32の管端が開口孔13内へと入ってしてしまうことを防止することができる。また、可撓性波型金物20と上記内壁面12との間に配置される円管移動ストッパ17が、可撓性波型金物20の他側の側面に干渉することによって、ダクトスリーブ32がさらに作業空間11内に突出してしまうことを防ぐことができる。
As described above, the flexible corrugated metal piece 20 is interposed between the circular pipe moving stoppers 17 arranged at the pipe end of the duct sleeve 32, thereby forming the circular pipe support structure 10.
When the duct sleeve 32 is about to move due to vibration or the like, the circular tube moving stopper 17 disposed outside the flexible corrugated metal piece 20 interferes with the side surface on one side of the flexible corrugated metal piece 20. By doing so, it is possible to prevent the pipe end of the duct sleeve 32 from entering the opening hole 13. Further, the circular tube moving stopper 17 disposed between the flexible corrugated metal piece 20 and the inner wall surface 12 interferes with the other side surface of the flexible corrugated metal piece 20, whereby the duct sleeve 32 is formed. Furthermore, it can prevent protruding into the work space 11.

したがって、ダクトスリーブ32の管軸方向への移動を規制されるので、ダクトスリーブ32の管端が円管支持部材15から脱落することなく確実に支持することができる。
なお、上述したような円管支持構造10をダクトスリーブ32に設ける場合、上記内壁面12、一方の円管移動ストッパ17、可撓性波型金物20及び他方の円管移動ストッパ17を、内壁面12及び各部品間において隙間を空けることなく設けることが好ましい。すると例えば、地中の温度変化等によって起きるさや管16の伸縮によるケーブル31への影響をより緩和することができる。
よって、ダクトスリーブ32の管軸方向への移動を防止することだけでなく、上記のような効果も得ることが可能である。
Therefore, since the movement of the duct sleeve 32 in the tube axis direction is restricted, the tube end of the duct sleeve 32 can be reliably supported without dropping from the circular tube support member 15.
When the circular tube support structure 10 as described above is provided on the duct sleeve 32, the inner wall surface 12, one circular tube movement stopper 17, the flexible corrugated metal piece 20, and the other circular tube movement stopper 17 are arranged on the inner side. It is preferable to provide without leaving a gap between the wall surface 12 and each component. Then, for example, the influence on the cable 31 due to the expansion and contraction of the pipe 16 caused by a temperature change or the like in the ground can be further alleviated.
Therefore, it is possible not only to prevent the duct sleeve 32 from moving in the tube axis direction but also to obtain the effects as described above.

以上に述べた本実施形態の円管支持構造10によれば、地震などの振動等に対して良好に対応することができるため、ダクトスリーブ32の開口孔13への支持状態を確実に維持することが可能となる。さらに、ダクトスリーブ32を支持する部分を波型形状としたためダクトスリーブ32の収容率を高めることができ、結果、より多くのさや管16を開口孔13内に収容することが可能となる。
また、従来の円管支持構造よりも構成を簡素化できるとともに部品点数を削減することができ、コストの削減を図ることが可能となる。
According to the circular tube support structure 10 of the present embodiment described above, it is possible to satisfactorily cope with vibrations such as earthquakes, so that the support state of the duct sleeve 32 to the opening hole 13 is reliably maintained. It becomes possible. Furthermore, since the portion supporting the duct sleeve 32 has a corrugated shape, the accommodation rate of the duct sleeve 32 can be increased, and as a result, more sheaths 16 can be accommodated in the opening hole 13.
Further, the configuration can be simplified and the number of parts can be reduced as compared with the conventional circular tube support structure, and the cost can be reduced.

なお、上記実施形態に限らず、可撓性波型金物20同士の間隔をダクトスリーブ32の外径よりも若干狭く配置し、ダクトスリーブ32に対して挟持力を発生させて支持するようにしてもよい。
また、金物保持部26において各可撓性波型金物20を上下方向にスライド可能にし、管径に合わせて自在に固定できるように設けてもよい。すると、管径や位置の相違に対して迅速に対応することができる。予め、ダクトスリーブ32に固定しておいた円管移動ストッパ17間に可撓性波型金物20を介在させることも容易となる。
また、ダクトスリーブ32が取り付けられていないさや管16(円管)を支持する円管支持構造も同様に構成することができる。この場合、上記円管移動ストッパ17の内径や各可撓性波型金物20の間隔等をさや管16の外径に合わせて形成することで、さや管16の支持が可能となる。
The interval between the flexible corrugated metal fittings 20 is not limited to the above-described embodiment, and the gap between the flexible corrugated metal pieces 20 is slightly narrower than the outer diameter of the duct sleeve 32 so that a clamping force is generated and supported with respect to the duct sleeve 32. Also good.
In addition, the flexible corrugated hardware 20 may be slidable in the vertical direction in the hardware holding part 26 and may be provided so as to be freely fixed according to the tube diameter. As a result, it is possible to quickly cope with differences in tube diameter and position. It becomes easy to interpose the flexible corrugated metal piece 20 between the circular tube moving stoppers 17 fixed to the duct sleeve 32 in advance.
In addition, a circular tube support structure that supports the sheath tube 16 (circular tube) to which the duct sleeve 32 is not attached can be similarly configured. In this case, the sheath tube 16 can be supported by forming the inner diameter of the circular tube moving stopper 17 and the interval between the flexible corrugated metal pieces 20 according to the outer diameter of the sheath tube 16.

本発明における一実施形態の円管支持構造を備えた複数の収容管が地中に埋設されている様子を示す側断面図である。It is a sectional side view which shows a mode that the some accommodating pipe provided with the circular tube support structure of one Embodiment in this invention is embed | buried in the ground. 本発明における一実施形態の円管支持構造を備えた様子を示す正面図である。It is a front view which shows a mode that the circular tube support structure of one Embodiment in this invention was provided.

符号の説明Explanation of symbols

12 内壁面
13 開口孔
16 さや管(円管)
15 円管支持部材
17 円管移動ストッパ
20 可撓性波型金物
32 ダクトスリーブ(円管)

12 inner wall surface 13 opening hole 16 sheath tube (circular tube)
15 circular tube support member 17 circular tube movement stopper 20 flexible corrugated metal 32 duct sleeve (circular tube)

Claims (3)

マンホールまたはハンドホールの内壁面に開口する開口孔内に収容される複数の円管に適用される円管支持構造であって、
前記開口孔上に配置され、長さ方向に凸状あるいは凹状の部位が交互に存在する複数の可撓性波形金物と、複数の前記可撓性波形金物の両端を前記内壁面上に固定可能に支持する固定部材とを有する支持部材と、前記開口孔から突出する前記円管の端部に設けられた一対の円管移動ストッパと、を有し、
前記支持部材において隣接する前記可撓性波形金物の凹状の部位に前記円管が係合されるとともに、前記可撓性波形金物は前記一対の円管移動ストッパにより前記円管の管軸方向に挟まれており、
一対の前記円管移動ストッパにより前記円管の前記管軸方向の移動が規制される一方、前記可撓性波形金物の変形により前記管軸方向に直交する方向の前記円管の移動が許容されていることを特徴とする円管支持構造。
A circular tube support structure applied to a plurality of circular tubes accommodated in an opening hole opened in an inner wall surface of a manhole or a hand hole ,
A plurality of flexible corrugated hardware arranged on the opening hole and having convex or concave portions alternately in the length direction, and both ends of the plurality of flexible corrugated hardware can be fixed on the inner wall surface A support member having a fixing member to be supported on, and a pair of circular tube movement stoppers provided at end portions of the circular tube protruding from the opening hole,
The circular pipe is engaged with a concave portion of the flexible corrugated metal adjacent to the support member, and the flexible corrugated metal is moved in the tube axis direction of the circular pipe by the pair of circular pipe movement stoppers. Sandwiched between
While the pair of the circular tube movement stoppers restricts the movement of the circular tube in the tube axis direction, the deformation of the flexible corrugated hardware allows the movement of the circular tube in a direction perpendicular to the tube axis direction. A circular tube support structure characterized by having
配列方向で隣り合う第1の前記可撓性波型金物および第2の前記可撓性波型金物において、  In the first flexible wave metal fitting and the second flexible wave metal mold that are adjacent in the arrangement direction,
前記第1の可撓性波型金物の前記第2の可撓性波型金物側へ突出する部位と、前記第2の可撓性波型金物の前記第1の可撓性波型金物側へ突出する部位とが、前記配列方向で互いに対向していることを特徴とする請求項1記載の円管支持構造。  A portion of the first flexible corrugated metal part protruding toward the second flexible corrugated metal object, and the first flexible corrugated metal object side of the second flexible corrugated metal object The circular tube support structure according to claim 1, wherein portions projecting toward each other are opposed to each other in the arrangement direction.
前記一対の円管移動ストッパが、前記円管を支持した2つの前記可撓性波型金物と前記円管の軸方向視で部分的に重なる径を有するリング状であることを特徴とする請求項1または2記載の円管支持構造。  The pair of circular tube moving stoppers are ring-shaped having a diameter that partially overlaps the two flexible corrugated metal objects supporting the circular tube when viewed in the axial direction of the circular tube. Item 3. The circular tube support structure according to Item 1 or 2.
JP2004320484A 2004-11-04 2004-11-04 Pipe support structure Expired - Fee Related JP4387924B2 (en)

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