JPH06143418A - Spiral pipe for lining of existing pipe - Google Patents
Spiral pipe for lining of existing pipeInfo
- Publication number
- JPH06143418A JPH06143418A JP4294941A JP29494192A JPH06143418A JP H06143418 A JPH06143418 A JP H06143418A JP 4294941 A JP4294941 A JP 4294941A JP 29494192 A JP29494192 A JP 29494192A JP H06143418 A JPH06143418 A JP H06143418A
- Authority
- JP
- Japan
- Prior art keywords
- fitting
- strip
- substrate
- shaped body
- pipe
- 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
Landscapes
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Pipe Accessories (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、老朽化した既設管を更
正するために使用される既設官ライニング用の螺旋管に
関し、特に、帯状体を螺旋状に巻回して製造される螺旋
管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spiral pipe for an existing government lining used for repairing an old pipe that has been deteriorated, and more particularly to a spiral pipe manufactured by spirally winding a strip. .
【０００２】[0002]
【従来の技術】上水道や下水道として使用される既設管
には、古くから金属管やヒューム管が使用されている。
このような既設管は、長期の使用によって老朽化し、割
れや腐食により漏水するおそれがある。このため、最近
では、老朽化した埋設管等の既設管内に合成樹脂管を挿
入してライニングすることが行われている。2. Description of the Related Art Metal pipes and fume pipes have been used for a long time as existing pipes used for water supply and sewerage.
Such existing pipes may deteriorate due to long-term use, and may leak due to cracking or corrosion. For this reason, recently, a synthetic resin pipe is inserted into an existing pipe such as an aged buried pipe for lining.
【０００３】既設管のライニング工法の一つに合成樹脂
製の帯状体を螺旋状に巻回することにより形成される螺
旋管によって既設管内周面をライニングする方法があ
る。このような既設管のライニング工法は、例えば特開
平2-245317号公報、特公平3-48392号公報、特公平3-104
93号公報等に開示されている。これらの公報に開示され
たライニング工法では、帯状体を螺旋状に巻回すること
により螺旋管を製管しつつ、製管された螺旋管を、順
次、既設管内に挿入することにより、既設管内周面を螺
旋管によってライニングする。One of the methods for lining the existing pipe is a method of lining the inner peripheral surface of the existing pipe with a spiral pipe formed by spirally winding a synthetic resin strip. Such an existing pipe lining method is disclosed in, for example, JP-A-2-245317, JP-B-3-48392, and JP-B-3-104.
No. 93, etc. In the lining method disclosed in these publications, a spiral pipe is manufactured by spirally winding a strip-shaped body, and the manufactured spiral pipes are sequentially inserted into the existing pipe, thereby The peripheral surface is lined with a spiral tube.
【０００４】このようなライニング工法では、既設管内
に挿入された螺旋管の外周面と既設管の内周面との間隙
に、例えばグラウト材等の充填剤を充填して止水するこ
とも知られている。この場合には、充填剤を充填する圧
力が、合成樹脂製の螺旋管の外周面に作用し、充填剤の
充填圧力によって螺旋管が座屈破壊されるおそれがあ
る。例えば、肉厚3.4mmの帯状体を巻回して、直径900mm
に製管された螺旋管では、約0.5kgf／cm2の充填圧力に
しか耐えることができず、それ以上の圧力が螺旋管に加
わると螺旋管は破損する。このために、充填剤を充填す
る際の圧力が制限されて、充填剤を螺旋管と既設管との
間隙の長手方向全体あるいは周方向の全体にまで充填す
ることができなくなる。所定の圧力で、螺旋管の軸方向
および周方向の全体に充填剤を充填するためには、螺旋
管の軸方向長さおよび螺旋管あるいは既設管の直径が限
定される。In such a lining method, it is also known that the gap between the outer peripheral surface of the spiral tube inserted into the existing pipe and the inner peripheral surface of the existing pipe is filled with a filler such as grout to stop the water. Has been. In this case, the pressure of filling the filler acts on the outer peripheral surface of the spiral tube made of synthetic resin, and the filling pressure of the filler may cause buckling of the spiral tube. For example, by winding a strip with a thickness of 3.4 mm and a diameter of 900 mm
The spiral tube manufactured according to the present invention can only withstand a filling pressure of about 0.5 kgf / cm 2 , and the spiral tube is broken when a pressure higher than that is applied to the spiral tube. Therefore, the pressure at the time of filling the filler is limited, and it becomes impossible to fill the entire gap in the longitudinal direction or the entire circumferential direction of the gap between the spiral pipe and the existing pipe. In order to fill the entire axial and circumferential direction of the filler with a given pressure, the axial length of the helical tube and the diameter of the helical tube or the existing tube are limited.
【０００５】特許公表昭64-500502号公報には、帯状体
を巻回して螺旋管を形成する際に、帯状体に配置された
補強リブに、帯板状の補強材を嵌合させて、製造される
螺旋官の強度を向上させる技術が開示されている。この
ような構成であれば、螺旋管と既設管との間に充填され
る裏込め剤による座屈破壊が抑制される。In Japanese Patent Publication No. 64-500502, when a strip-shaped body is wound to form a spiral tube, a strip-shaped reinforcing material is fitted to a reinforcing rib arranged on the strip-shaped body, A technique for improving the strength of the manufactured helix is disclosed. With such a configuration, buckling failure due to the backfilling agent filled between the spiral pipe and the existing pipe is suppressed.
【０００６】さらに、特公昭62-22770号公報には、２層
構造の螺旋管を形成し得る帯状体が開示されている。こ
のような帯状体によって形成される螺旋管も強度が向上
しており、裏込め剤による座屈破壊が抑制される。Further, Japanese Patent Publication No. Sho 62-22770 discloses a strip-shaped body capable of forming a spiral tube having a two-layer structure. The strength of the spiral tube formed by such a strip is also improved, and buckling failure due to the backfilling agent is suppressed.
【０００７】[0007]
【発明が解決しようとする課題】上述した特許公表昭64
-500502号公報に開示された技術では、帯状体を螺旋状
に巻回される際に、螺旋管の外周面に補強材が重ね合わ
されて、螺旋管における隣接する補強リブ間に、螺旋管
外周面とは間隙を有した状態にで嵌合されている。この
ため、螺旋管外周面と既設管内周面との間に裏込め剤が
充填されても、補強材と螺旋管の外周面との間に形成さ
れた間隙には裏込め剤が充填されない。その結果、裏込
め剤に亀裂等が発生した場合には、その亀裂等を通って
侵入水が螺旋管と補強材との間隙に流入するおそれがあ
る。該間隙内に流入した侵入水は、螺旋管外周面に沿っ
て形成される間隙を通って螺旋管の端部へ達し、該螺旋
管の端部から漏水する。補強材が金属製の場合には、侵
入水によって補強材が腐食するために、腐食した補強材
では十分な補強効果が得られず、螺旋管が裏込め材によ
って座屈破壊するおそれもある。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the technology disclosed in Japanese Patent Publication No. 500502, when a strip-shaped body is spirally wound, a reinforcing material is superposed on the outer peripheral surface of the spiral tube, and the spiral tube outer periphery is provided between adjacent reinforcing ribs in the spiral tube. The surfaces are fitted with a gap. Therefore, even if the backfill agent is filled between the outer peripheral surface of the spiral pipe and the inner peripheral surface of the existing pipe, the backfill agent is not filled in the gap formed between the reinforcing material and the outer peripheral surface of the spiral pipe. As a result, when a crack or the like occurs in the backfill agent, there is a risk that the invading water may flow into the gap between the spiral pipe and the reinforcing material through the crack or the like. The invading water flowing into the gap reaches the end of the spiral pipe through the gap formed along the outer peripheral surface of the spiral pipe, and leaks from the end of the spiral pipe. When the reinforcing material is made of metal, the reinforcing material is corroded by the invading water, so that the corroded reinforcing material cannot provide a sufficient reinforcing effect, and the backfill material may cause buckling failure of the spiral tube.
【０００８】また、特公昭62-22770号公報に開示された
帯状体によって形成される２重構造の螺旋管も、外周面
と内周面との間に間隙が形成されるために、その間隙を
通して漏水するおそれがある。Also, in the double-walled spiral tube formed by the band-shaped body disclosed in Japanese Patent Publication No. 62-22770, a gap is formed between the outer peripheral surface and the inner peripheral surface. There is a risk of water leakage through.
【０００９】本発明はこのような問題点を解決するもの
であり、その目的は、優れた強度を有しており、しか
も、止水性に優れた既設管ライニング用螺旋管を提供す
ることにある。The present invention solves such problems, and an object thereof is to provide a spiral pipe for an existing pipe lining which has excellent strength and excellent water stopping property. .
【００１０】[0010]
【課題を解決するための手段】本発明の既設管ライニン
グ用螺旋管は、帯状体を螺旋状に巻回することにより製
造され、ライニングすべき既設管内に挿入されて該既設
管をライニングする既設管ライニング用螺旋管であっ
て、前記帯状体が、帯板状の基板と、該基板が螺旋状に
巻回された際に外側に突出するように該基板における一
方の側縁部に該基板の長手方向に沿って連続的に設けら
れた嵌合突条と、該嵌合突条が設けられた側縁部とは反
対側の側縁部に該基板が螺旋状に巻回された際に該嵌合
突条が嵌入する嵌合凹条と、を有しており、該帯状体が
螺旋状に巻回される際に、該帯状体の嵌合凹部内に嵌入
されるとともに、該帯状体における前記嵌合突条が内部
に嵌入される、該嵌合凹状とほぼ同様の断面形状をした
補強部材、を有することを特徴とするするものであり、
そのことにより、上記目的が達成される。The spiral pipe for an existing pipe lining of the present invention is manufactured by spirally winding a strip, and is inserted into an existing pipe to be lined to install the existing pipe. A spiral tube for pipe lining, wherein the strip-shaped body is a strip-shaped substrate, and the substrate is provided at one side edge of the substrate so as to project outward when the substrate is spirally wound. When the board is spirally wound around the fitting ridge continuously provided along the longitudinal direction of the substrate and the side edge opposite to the side edge where the fitting ridge is provided. And a fitting concave line into which the fitting protrusion is fitted, and when the band-shaped body is spirally wound, it is fitted into the fitting concave part of the band-shaped body, and A reinforcing member having a cross-sectional shape substantially similar to that of the fitting concave shape, into which the fitting projection of the band is fitted. Is intended to characterized the door,
Thereby, the above object is achieved.
【００１１】また、本発明の既設管ライニング用螺旋管
は、帯状体を螺旋状に巻回することにより製造され、ラ
イニングすべき既設管内に挿入されて該既設管をライニ
ングする既設管ライニング用螺旋管であって、前記帯状
体が、帯板状の基板と、該基板が螺旋状に巻回された際
に外側に突出するように該基板における一方の側縁部に
基板の長手方向に沿って連続的に設けられた嵌合突条
と、該嵌合突条が設けられた側縁部とは反対側の側縁部
に該基板が螺旋状に巻回された際に該嵌合突条が嵌入す
る嵌合凹条と、該嵌合凹条に隣接して該嵌合凹条と同方
向に突出するように長手方向に連続して設けられた凹条
と、を有しており、該帯状体が螺旋状に巻回される際
に、該帯状体の嵌合凹部内に嵌入されるとともに、該帯
状体における前記嵌合突条が内部に嵌入される凹条が長
手方向に連続して設けられるとともに、前記嵌合凹条内
に嵌入される突条が長手方向に連続して設けられた帯板
状の補強部材、を有することを特徴とするものであり、
そのことにより、上記目的が達成される。The existing pipe lining spiral pipe of the present invention is manufactured by spirally winding a strip and is inserted into an existing pipe to be lined to line the existing pipe lining spiral. A tube, wherein the strip-shaped body is a strip-shaped substrate and one side edge portion of the substrate along the longitudinal direction of the substrate so as to project outward when the substrate is spirally wound. And the fitting protrusion provided continuously when the substrate is spirally wound around the side edge portion opposite to the side edge portion on which the fitting protrusion is provided. A fitting recessed line into which the line is fitted; and a recessed line that is provided continuously adjacent to the fitting recessed line in the longitudinal direction so as to project in the same direction as the fitting recessed line. When the band-shaped body is spirally wound, the band-shaped body is fitted into a fitting recess of the band-shaped body, and the fitting in the band-shaped body is performed. A strip-shaped reinforcing member in which a recessed line in which a line is fitted is continuously provided in the longitudinal direction, and a protrusion lined in the fitting recessed line is continuously provided in the longitudinal direction, It is characterized by having
Thereby, the above object is achieved.
【００１２】[0012]
【作用】本発明の既設管ライニング用螺旋管は、帯状体
が螺旋状に巻回される際に、基板の一方の側縁部に設け
られた嵌合凹条内に補強部材が嵌入されて、該補強部材
内に帯状体の他方の側縁部の嵌合突条が嵌入される。補
強部材は、嵌合凹条と嵌合突条との間隙内に密着された
状態になって、螺旋管を補強する。In the existing pipe lining spiral tube of the present invention, when the strip-shaped body is spirally wound, the reinforcing member is fitted into the fitting groove provided on one side edge of the substrate. The fitting ridge at the other side edge of the strip is fitted in the reinforcing member. The reinforcing member is brought into close contact with the inside of the gap between the fitting groove and the fitting protrusion to reinforce the spiral tube.
【００１３】また、帯状体が螺旋状に巻回されると、基
板の一方の側縁部に設けられた嵌合突条が補強部材の凹
条内に嵌入された状態で、該凹条が基板における他方の
側縁部の凹条内に嵌入される。さらに、基板に設けられ
た突条が該基板の凹条に隣接して設けられた嵌合凹条内
に嵌入されて、螺旋条に巻回された帯状体の隣接する側
縁部同士が補強部材によって連結された状態になる。Further, when the band-shaped body is spirally wound, the fitting ridge provided on one side edge of the substrate is fitted into the ridge of the reinforcing member, and the ridge is formed. The board is fitted in the groove on the other side edge. Further, the ridges provided on the substrate are fitted into the fitting ridges provided adjacent to the ridges of the substrate to reinforce the adjacent side edges of the strip wound on the spiral ridge. The members are connected to each other.
【００１４】[0014]
【実施例】本発明の実施例について以下に説明する。本
発明の既設管ライニング用螺旋管は、例えば、既設管で
あるコンクリート製の下水管をライニングして更生する
際に使用される。EXAMPLES Examples of the present invention will be described below. The spiral pipe for an existing pipe lining of the present invention is used, for example, when lining a concrete sewer pipe, which is an existing pipe, to rehabilitate it.
【００１５】下水管内周面にライニングされる帯状体10
は、図１に示すように、帯板状の基板12を有しており、
該基板12上には、一方の側面12aから適当な距離をあけ
て、嵌合突条13が立設されている。該嵌合突条13は、基
板12の長手方向に連続している。嵌合突条13には、基板
12の厚さより若干長い支柱部13aと、支柱部13aの先端に
配設された断面半円状の挿入部13bとを有している。A strip 10 lined on the inner peripheral surface of the sewer pipe
Has a strip-shaped substrate 12 as shown in FIG.
On the substrate 12, a fitting protrusion 13 is provided upright at an appropriate distance from the one side surface 12a. The fitting protrusion 13 is continuous in the longitudinal direction of the substrate 12. The mating ridge 13 has a board
It has a column portion 13a slightly longer than the thickness of 12 and an insertion portion 13b having a semicircular cross section disposed at the tip of the column portion 13a.
【００１６】上記基板12の他方の側面12b側には、基板1
2が螺旋状に巻回された際に、図２に示すように、嵌合
突条13側の側面12aと嵌合突条13の基端部との間の基板1
2部分が嵌入し得るように、該基板12の厚み分だけ嵌合
突条13の突出側に段落ちした段落ち部17が形成されてい
る。段落ち部17に嵌入し得る基板12の支柱部13a近傍の
上面には、該上面と段落ち部17とを接着して止水するた
めのホットメルト接着剤14が、基板12の長手方向に連続
して塗布されている。On the other side surface 12b side of the substrate 12, the substrate 1
When 2 is spirally wound, as shown in FIG. 2, the substrate 1 between the side surface 12a on the fitting protrusion 13 side and the base end of the fitting protrusion 13 is formed.
A step-down portion 17 is formed on the projecting side of the fitting projection 13 by the thickness of the substrate 12 so that the two portions can be fitted. A hot-melt adhesive 14 for adhering the upper surface and the step-down portion 17 to stop water is provided on the upper surface of the substrate 12 near the column portion 13a that can be fitted into the step-down portion 17, in the longitudinal direction of the substrate 12. It is applied continuously.
【００１７】段落ち部17には、図２に示すように、嵌合
突条13に補強部材50が嵌合されて該補強部材50とともに
嵌合突条が嵌入し得る断面半円状の間隙が設けられた断
面半円環状の嵌合凹条18が、基板12の長手方向に沿って
嵌合突条13と同方向へ突出して設けられている。上記基
板12の嵌合突条13と嵌合凹条18との間には、断面Ｔ字状
をなす複数の補強リブ16が、等しい間隔をあけてそれぞ
れ基板12の長手方向に沿って該基板12と一体的に立設さ
れている。各補強リブ16は、基板12に対して直交状態に
形成された支柱部16aと、該支柱部16aの先端に支柱部16
aに対して直交状態で設けられたフランジ部16bとを有し
ている。各補強リブ16は、それぞれのフランジ部16b
が、ほぼ基板12に平行する同一平面内に位置されてい
る。As shown in FIG. 2, in the step-down portion 17, a reinforcing member 50 is fitted to the fitting protrusion 13, and a gap having a semicircular cross section into which the fitting protrusion can be fitted together with the reinforcing member 50. The fitting recessed ridge 18 having a semicircular cross section provided with is provided so as to project in the same direction as the fitting ridge 13 along the longitudinal direction of the substrate 12. A plurality of reinforcing ribs 16 having a T-shaped cross section are provided between the fitting protrusions 13 and the fitting recesses 18 of the board 12 at equal intervals along the longitudinal direction of the board 12. It is erected integrally with 12. Each of the reinforcing ribs 16 includes a pillar portion 16a formed orthogonal to the substrate 12, and a pillar portion 16a at the tip of the pillar portion 16a.
and a flange portion 16b provided in a state orthogonal to a. Each reinforcing rib 16 has its own flange 16b.
Are located in the same plane substantially parallel to the substrate 12.
【００１８】このような帯状体10は、ポリ塩化ビニル、
ポリエチレン、ポリプロピレン、ポリカーボネート、ポ
リエステル、あるいはこれらの樹脂の表面または内部を
ガラス繊維で補強した樹脂等の材料により、一体成形さ
れている。Such a strip 10 is made of polyvinyl chloride,
It is integrally formed of a material such as polyethylene, polypropylene, polycarbonate, polyester, or a resin in which the surface or the inside of these resins is reinforced with glass fiber.
【００１９】嵌合突条13と嵌合凹条18との間に挿入され
る補強部材50は、図３に示すように、嵌合突条13の挿入
部13bを覆う断面半円環状の凹部53と、該凹部53の各側
部から嵌合突条13の支柱部13aに沿って延出する平板状
の一対の側面部51および51と、各側面部51にそれぞれ連
設されて上記基板12と段落ち部17との間に挟み込まれる
平板状の基板部51および51と、を有しており、基板12の
長手方向に沿って長く延びている。As shown in FIG. 3, the reinforcing member 50 inserted between the fitting protrusion 13 and the fitting recess 18 has a semicircular recess having a semicircular cross section for covering the insertion portion 13b of the fitting protrusion 13. 53, a pair of flat plate-shaped side surface portions 51 and 51 extending from the respective side portions of the recess 53 along the column portion 13a of the fitting projection 13, and the above-mentioned substrate connected to each side surface portion 51. It has flat plate-shaped substrate portions 51 and 51 sandwiched between 12 and the step-down portion 17, and extends long along the longitudinal direction of the substrate 12.
【００２０】この補強部材50は、ポリ塩化ビニル、ポリ
エチレン、ポリプロピレン、ポリカーボネート、ポリエ
ステル、あるいはこれらの樹脂をガラス繊維で補強した
樹脂、もしくは金属によって構成される。The reinforcing member 50 is made of polyvinyl chloride, polyethylene, polypropylene, polycarbonate, polyester, a resin obtained by reinforcing these resins with glass fiber, or a metal.
【００２１】このような構成の帯状体10は、例えば、図
４に示すように、下水管40の内周面をライニングするた
めに使用される。帯状体10は、嵌合突条13、補強リブ1
6、嵌合凹条18が立設された基板12表面側が外周側にな
るように、下水管40のマンホール45の開口部近傍に設置
された帯状体ドラムに巻き取られている。この帯状体ド
ラムから送出される帯状体10は、図４（ａ）に示すよう
に、マンホール45内に配置された製管機30により螺旋状
に巻回されて、螺旋管20とされて、下水管40内へ挿入さ
れる。製管機30は、その内部へ導入される帯状体10を、
所定の螺旋角を有して円筒周面上に配設された製管ロー
ラにより、強制的に螺旋状に巻回する。The strip 10 having such a structure is used for lining the inner peripheral surface of the sewer pipe 40, for example, as shown in FIG. The band-shaped body 10 includes a fitting protrusion 13, a reinforcing rib 1
6. The substrate 12 on which the fitting groove 18 is erected is wound around a belt-shaped body drum provided in the vicinity of the opening of the manhole 45 of the sewer pipe 40 so that the surface side is the outer peripheral side. As shown in FIG. 4 (a), the band-shaped body 10 delivered from this band-shaped body drum is spirally wound by the pipe making machine 30 arranged in the manhole 45 to form the spiral tube 20, It is inserted into the sewer pipe 40. The pipe making machine 30, the strip 10 introduced into the inside,
A tube-making roller having a predetermined spiral angle and arranged on the circumferential surface of the cylinder forcibly spirally winds it.
【００２２】そして、螺旋状に巻回された帯状体10が、
新たに製管機30内に導入される帯状体に近接した位置に
達すると、図５に示すように、帯状体10の側縁部に位置
する嵌合突条13に補強部材50が、順次嵌合される。そし
て、嵌合突条13に補強部材50が嵌合された帯状体10の該
嵌合突条13近傍の側縁部は、新たに製管機30に導入され
る帯状体10の段落ち部17と重ね合わされて、該段落ち部
17に形成された嵌合凹条18内に補強部材50が嵌合された
嵌合突条13が、該補強部材50とともに嵌入される。そし
て、各側縁部同士が嵌合された帯状体10が、製管機30に
設けられた一対の嵌合ローラ31および31間へと導入され
て、両嵌合ローラ31間を通過する間に各帯状体10の側縁
部が確実に嵌合される。このとき、帯状体10の基板12上
に塗布されたホットメルト接着剤が、段落ち部17と基板
12表面とを接着する。Then, the strip 10 wound in a spiral shape is
When reaching a position close to the strip-shaped body newly introduced into the pipe making machine 30, as shown in FIG. 5, the reinforcing member 50 is sequentially attached to the fitting protrusion 13 located at the side edge portion of the strip-shaped body 10. Mated. Then, the side edge portion of the strip-shaped body 10 in which the reinforcing member 50 is fitted to the fitting projecting strip 13 in the vicinity of the fitting projecting strip 13 is a step-down portion of the strip-shaped body 10 newly introduced into the pipe manufacturing machine 30. 17 and the step-down part
The fitting protrusion 13 in which the reinforcing member 50 is fitted in the fitting recessed portion 18 formed in 17 is fitted together with the reinforcing member 50. Then, while the strip-shaped body 10 in which the respective side edge portions are fitted to each other is introduced between the pair of fitting rollers 31 and 31 provided in the pipe manufacturing machine 30 and passes between the fitting rollers 31. The side edge of each strip 10 is securely fitted to. At this time, the hot-melt adhesive applied on the substrate 12 of the band-shaped body 10 is applied to the step-down portion 17 and the substrate.
12 Adhere to the surface.
【００２３】このようにして、帯状体10が螺旋条に巻回
されて、帯状体10の側縁部同士が順次嵌合されるひとに
より、螺旋管20が製管される。製管された螺旋管20は、
図４（ｂ）に示すように、製管機30から順次下水管40内
へと挿入されて、該下水管40内を推進される。In this way, the spiral tube 20 is manufactured by the person who winds the strip 10 around the spiral strip and sequentially fits the side edges of the strip 10 together. The spiral tube 20 made is
As shown in FIG. 4B, the pipes 30 are sequentially inserted into the sewer pipe 40 and propelled in the sewer pipe 40.
【００２４】このようにして、螺旋管20が下水管40内を
その全長にわたって推進されると、図４（ｃ）に示すよ
うに、螺旋管20の製管機30側の端部が切断される。そし
て、製管機30等がマンホール45から撤去されて、下水管
40と螺旋管20との間の間隙41に、例えばグラウト材等の
裏込め剤42を充填する。螺旋管20は補強部材50により補
強されているために、裏込め剤42の充填圧力を増大して
も、螺旋管20が座屈破壊するおそれがなく、従って、下
水管40と螺旋管20との間隙41全体にわたって裏込め剤42
を充填することができる。In this way, when the spiral pipe 20 is propelled in the sewer pipe 40 over its entire length, the end of the spiral pipe 20 on the pipe making machine 30 side is cut, as shown in FIG. 4 (c). It Then, the pipe making machine 30 and the like are removed from the manhole 45, and sewer pipes are removed.
A gap 41 between the spiral tube 20 and the spiral tube 20 is filled with a backfilling agent 42 such as grout material. Since the spiral pipe 20 is reinforced by the reinforcing member 50, even if the filling pressure of the backfilling agent 42 is increased, there is no risk of the spiral pipe 20 being buckled and broken, and therefore, the sewer pipe 40 and the spiral pipe 20. Backfill agent 42 over the entire gap 41
Can be filled.
【００２５】補強部材50は、嵌合凹条18と段落ち部17と
の間隙55に収容された状態になっているために、補強部
材50と螺旋管20の外周面とのに間隙が発生するおそれが
なく、従って、その間隙内に水が浸入して螺旋管20の端
部から漏水するおそれがない。さらに、基板12と段落ち
部17とは、ホットメルト接着剤14により接着されて止水
されているために、螺旋管20に収容された補強部材50が
浸入水に接触するおそれがなく、補強部材50を金属製材
料によって構成しても補強部材50が腐食するおそれもな
い。Since the reinforcing member 50 is accommodated in the gap 55 between the fitting concave line 18 and the step-down portion 17, a gap is generated between the reinforcing member 50 and the outer peripheral surface of the spiral tube 20. Therefore, there is no possibility that water will enter the gap and leak from the end of the spiral tube 20. Furthermore, since the substrate 12 and the step-down portion 17 are adhered by the hot-melt adhesive 14 to stop water, the reinforcing member 50 housed in the spiral tube 20 does not come into contact with the infiltrated water and is reinforced. Even if the member 50 is made of a metal material, the reinforcing member 50 does not corrode.
【００２６】本発明は、このような実施例に限定される
ものではなく、例えば、図６に示すように、補強部材50
が装着される段落ち部17と基板12側部との間に、該補強
部材50が間に位置するように、一対の帯状弾性止水部材
60および60を設けるようにしてもよい。このような構成
では、各止水部材60および60によって、補強部材50は螺
旋管20の外部からの浸入水による腐食が防止されるのみ
ならず、螺旋管20内部の通流水による腐食も防止され
る。The present invention is not limited to such an embodiment, and for example, as shown in FIG.
A pair of band-shaped elastic water blocking members are arranged such that the reinforcing member 50 is located between the step-down portion 17 on which the is mounted and the side portion of the substrate 12.
60 and 60 may be provided. In such a configuration, the water blocking members 60 and 60 not only prevent the reinforcing member 50 from being corroded by infiltration water from the outside of the spiral tube 20, but also prevented from being corroded by the flowing water inside the spiral tube 20. It
【００２７】図７は、本発明のライニング工法用螺旋管
のさらに他の実施例を示している。本実施例では、補強
部材50として、帯板状の基板部55を有しており、該基板
部55の一方の側部に、帯状体10の嵌合突条13とほぼ同様
の断面形状を有する突条56が長手方向に連続して設けら
れている。また、基板部55の他方の側部には、基板10の
嵌合突条13が嵌入し得る断面形状の凹条58が、突条56の
突出方向と同方向へ長手方向に連続して突出した連続状
態で設けられている。帯状体10における段落ち部17に
は、補強部材50における突条56が嵌入し得る嵌合凹条1
8'と、該嵌合凹条18'に隣接して補強部材50の凹条57が
嵌入し得る凹条19とが設けられている。そして、段落ち
部17は、補強部材50の基板部55が嵌入し得るように、該
基板部55の厚さ分だけ切削されて凹溝17aが形成されて
いる。FIG. 7 shows still another embodiment of the spiral tube for the lining method of the present invention. In this embodiment, the reinforcing member 50 has a strip plate-shaped substrate portion 55, and one side portion of the substrate portion 55 has substantially the same cross-sectional shape as the fitting protrusion 13 of the strip-shaped body 10. The ridges 56 are provided continuously in the longitudinal direction. Further, on the other side portion of the substrate portion 55, a concave ridge 58 having a cross-sectional shape into which the fitting ridge 13 of the substrate 10 can be fitted is continuously projected in the longitudinal direction in the same direction as the protruding direction of the ridge 56. It is provided in a continuous state. The stepped-down portion 17 of the band-shaped body 10 can be fitted with the projection 56 of the reinforcing member 50.
8'and a recessed strip 19 into which the recessed strip 57 of the reinforcing member 50 can be fitted are provided adjacent to the fitting recessed strip 18 '. Then, the stepped-down portion 17 is cut by the thickness of the substrate portion 55 to form a concave groove 17a so that the substrate portion 55 of the reinforcing member 50 can be fitted therein.
【００２８】このような実施例では、帯状体10を螺旋条
に巻回して螺旋管20を形成する際に、帯状体10の段落ち
部17に形成された嵌合凹条18'および凹条19内に補強部
材55の嵌合突条56および凹条58がそれぞれ嵌入されると
ともに、段落ち部17の凹溝17a内に補強部材50の基板部5
5が嵌入される。このような状態で、帯状体10の嵌合突
条13が段落ち部17に装着された補強部材50の凹条58内に
嵌入されて、螺旋管20が製造される。本実施例において
は、製造される螺旋管20の強度が補強部材50によって著
しく向上する。In such an embodiment, when the strip-shaped body 10 is wound around the spiral strip to form the spiral tube 20, the fitting recessed strips 18 'and the recessed strips formed on the step-down portion 17 of the strip-shaped strip 10 are formed. The fitting protrusions 56 and the recesses 58 of the reinforcing member 55 are respectively fitted in the recesses 19, and the board portion 5 of the reinforcing member 50 is inserted in the recessed groove 17a of the step-down portion 17.
5 is inserted. In such a state, the fitting protrusion 13 of the strip 10 is fitted into the recess 58 of the reinforcing member 50 attached to the step-down portion 17, and the spiral tube 20 is manufactured. In this embodiment, the strength of the manufactured spiral tube 20 is significantly improved by the reinforcing member 50.
【００２９】[0029]
【発明の効果】本発明の既設管ライニング用螺旋管は、
このように、相互に嵌合される嵌合突条と嵌合凹条との
間隙内に、補強部材が両者とは圧接状態で配置されるた
めに、あるいは嵌合突条と嵌合凹条とが補強部材によっ
て連結された状態になるために、該補強部材が螺旋管を
高強度に補強する。しかも、補強部材は、帯状体との間
に間隙が形成されず、螺旋管の端部において、漏水が発
生するおそれもない。The spiral pipe for the existing pipe lining of the present invention is
In this way, the reinforcing member is arranged in pressure contact with the fitting projection and the fitting recess, which are fitted to each other, or the fitting projection and the fitting recess. Since and are connected by the reinforcing member, the reinforcing member reinforces the spiral tube with high strength. Moreover, no gap is formed between the reinforcing member and the belt-shaped body, and there is no risk of water leakage at the end of the spiral tube.
【図１】本発明の既設管ライニング用螺旋管とされる帯
状体の一例を示す断面図。FIG. 1 is a cross-sectional view showing an example of a strip-shaped body which is a spiral pipe for an existing pipe lining of the present invention.
【図２】その帯状体により形成される螺旋管の要部の断
面図。FIG. 2 is a cross-sectional view of a main part of a spiral tube formed by the strip.
【図３】本発明の螺旋管に使用される補強部材を示す斜
視図。FIG. 3 is a perspective view showing a reinforcing member used in the spiral tube of the present invention.
【図４】（ａ）〜（ｃ）は、それぞれライニング工法の
各工程を示す構成図。4A to 4C are configuration diagrams showing respective steps of the lining method.
【図５】本発明の螺旋管の製造状態を示す模式図。FIG. 5 is a schematic view showing a manufacturing state of the spiral tube of the present invention.
【図６】本発明の既設管ライニング用螺旋管の他の実施
例における要部の断面図。FIG. 6 is a cross-sectional view of a main part in another embodiment of the existing pipe lining spiral pipe of the present invention.
【図７】本発明の既設管ライニング用螺旋管のさらに他
の実施例を示す要部の断面図。FIG. 7 is a cross-sectional view of a main part showing still another embodiment of the existing pipe lining spiral pipe of the present invention.
10 帯状体 13 嵌合突条 14 ホットメルト接着剤 16 補強リブ 18 嵌合凹条 20 螺旋管 30 製管機 40 下水管 50 補強部材 10 Strip 13 Fitting protrusion 14 Hot melt adhesive 16 Reinforcing rib 18 Fitting recess 20 Spiral pipe 30 Pipe making machine 40 Sewer pipe 50 Reinforcing member
フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 23:22 4Ｆ Continuation of front page (51) Int.Cl. 5 Identification code Office reference number FI Technical display area B29L 23:22 4F
Claims (2)
造され、ライニングすべき既設管内に挿入されて該既設
管をライニングする既設管ライニング用螺旋管であっ
て、 前記帯状体が、帯板状の基板と、該基板が螺旋状に巻回
された際に外側に突出するように該基板における一方の
側縁部に該基板の長手方向に沿って連続的に設けられた
嵌合突条と、該嵌合突条が設けられた側縁部とは反対側
の側縁部に該基板が螺旋状に巻回された際に該嵌合突条
が嵌入する嵌合凹条と、を有しており、 該帯状体が螺旋状に巻回される際に、該帯状体の嵌合凹
部内に嵌入されるとともに、該帯状体における前記嵌合
突条が内部に嵌入される、該嵌合凹状とほぼ同様の断面
形状をした補強部材、を有することを特徴とする既設管
ライニング用螺旋管。1. An existing pipe lining spiral pipe, which is manufactured by spirally winding a strip and is inserted into an existing pipe to be lined to line the existing pipe, wherein the strip is a strip. A plate-shaped substrate and a fitting protrusion continuously provided along one side edge of the substrate along the longitudinal direction of the substrate so as to protrude outward when the substrate is spirally wound. A strip, and a fitting concave strip into which the fitting strip fits when the substrate is spirally wound around a side edge portion opposite to the side edge portion provided with the fitting strip. When the band-shaped body is spirally wound, the band-shaped body is fitted into the fitting concave portion of the band-shaped body, and the fitting projection of the band-shaped body is fitted inside. An existing pipe lining spiral pipe, comprising a reinforcing member having a cross-sectional shape substantially similar to the fitting concave shape.
造され、ライニングすべき既設管内に挿入されて該既設
管をライニングする既設管ライニング用螺旋管であっ
て、 前記帯状体が、帯板状の基板と、該基板が螺旋状に巻回
された際に外側に突出するように該基板における一方の
側縁部に基板の長手方向に沿って連続的に設けられた嵌
合突条と、該嵌合突条が設けられた側縁部とは反対側の
側縁部に該基板が螺旋状に巻回された際に該嵌合突条が
嵌入する嵌合凹条と、該嵌合凹条に隣接して該嵌合凹条
と同方向に突出するように長手方向に連続して設けられ
た凹条と、を有しており、 該帯状体が螺旋状に巻回される際に、該帯状体の嵌合凹
部内に嵌入されるとともに、該帯状体における前記嵌合
突条が内部に嵌入される凹条が長手方向に連続して設け
られるとともに、前記嵌合凹条内に嵌入される突条が長
手方向に連続して設けられた帯板状の補強部材、を有す
ることを特徴とする既設管ライニング用螺旋管。2. An existing pipe lining spiral pipe, which is manufactured by spirally winding a band-shaped body, and is inserted into an existing pipe to be lined to line the existing pipe, wherein the band-shaped body is a band. A plate-shaped substrate and a fitting ridge continuously provided along one side edge of the substrate along the longitudinal direction of the substrate so as to protrude outward when the substrate is spirally wound. And a fitting recess for fitting the fitting projection when the substrate is spirally wound on the side edge opposite to the side edge provided with the fitting projection. And a groove provided adjacent to the fitting groove and continuously provided in the longitudinal direction so as to project in the same direction as the fitting groove, and the band-shaped body is spirally wound. When the strip-shaped body is fitted into the fitting recessed portion of the strip-shaped body, the recessed ridges into which the fitting protrusions of the strip-shaped body are fitted are connected in the longitudinal direction. And with provided, existing pipe lining spiral tube ridge is fitted into the fitting concave is characterized by having a strip-like reinforcing member provided continuously in the longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29494192A JP3199492B2 (en) | 1992-11-04 | 1992-11-04 | Spiral tube for existing pipe lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29494192A JP3199492B2 (en) | 1992-11-04 | 1992-11-04 | Spiral tube for existing pipe lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06143418A true JPH06143418A (en) | 1994-05-24 |
| JP3199492B2 JP3199492B2 (en) | 2001-08-20 |
Family
ID=17814263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29494192A Expired - Fee Related JP3199492B2 (en) | 1992-11-04 | 1992-11-04 | Spiral tube for existing pipe lining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3199492B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100609340B1 (en) * | 2004-05-25 | 2006-08-08 | (주)토인종합건축사사무소 | Repair and reinforcement equipment for sewage pipes or conduits in civil engineering and roads |
| JP2015194254A (en) * | 2014-03-28 | 2015-11-05 | クボタシーアイ株式会社 | Coil wire rod and coil molding |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018159627A1 (en) * | 2017-03-01 | 2018-09-07 | 積水化学工業株式会社 | Band-shaped member for helical pipe and method for regenerating existing pipe |
-
1992
- 1992-11-04 JP JP29494192A patent/JP3199492B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100609340B1 (en) * | 2004-05-25 | 2006-08-08 | (주)토인종합건축사사무소 | Repair and reinforcement equipment for sewage pipes or conduits in civil engineering and roads |
| JP2015194254A (en) * | 2014-03-28 | 2015-11-05 | クボタシーアイ株式会社 | Coil wire rod and coil molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3199492B2 (en) | 2001-08-20 |
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