JP2021098337A

JP2021098337A - Rehabilitation member

Info

Publication number: JP2021098337A
Application number: JP2019231984A
Authority: JP
Inventors: 伸一谷川; Shinichi Tanigawa; 良一郎中村; Ryoichiro Nakamura; 晃介鈴木; Kosuke Suzuki; 裕久谷室; Hirohisa Tanimuro; 良平桔川; Ryohei Kikawa; 太一宇賀; Taichi Uga
Original assignee: Osaka Bousui Construction Co Ltd; Kubota ChemiX Co Ltd
Current assignee: Osaka Bousui Construction Co Ltd; Kubota ChemiX Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2021-07-01
Anticipated expiration: 2039-12-23
Also published as: JP7355330B2

Abstract

To provide a tube rehabilitation member capable of sending properly a formed spiral tube into an existing tube.SOLUTION: A tube rehabilitation member includes a lining member 12 and a connection member 14. The connection member includes a long belt-like substrate 50 which is a member attached from the outer surface side of the lining member wound around spirally, and connecting each adjacent side edge part of the lining member, a second fitting part 52 formed on one principal surface of the substrate, and fitted to a first fitting part 22 of the lining member 12, and a projection 68 formed on the other principal surface of the substrate, and extending in a longer direction.SELECTED DRAWING: Figure 8

Description

この発明は、ライニング部材とライニング部材の側縁部どうしを連結する連結部材とを含み、マンホール内で螺旋管を製管して既設管内に送り込んでいく管路更生工法に用いられる、管更生部材に関する。 The present invention includes a lining member and a connecting member that connects the side edges of the lining member, and is used in a pipe rehabilitation method for producing a spiral pipe in a manhole and feeding it into an existing pipe. Regarding.

ライニング部材と連結部材とを含む従来の管更生部材の一例が特許文献１に開示される。特許文献１の技術では、ライニング部材（帯状体）は、帯板状の基板とその両端部に形成される接合凹部とを備える。このライニング部材には、金属製の補強材が装着される。一方、連結部材（嵌合材）は、ライニング部材の接合凹部に嵌り込む接合凸部を備える。既設管を更生する際には、マンホール内に設置された製管機を用いて、ライニング部材を螺旋状に巻き回すと共にライニング部材の側縁部どうしを連結部材で連結することで螺旋管を製管し、マンホール内で製管した螺旋管を既設管内に順次送り込んでいく。この際、連結部材は、ライニング部材の内面側から取り付けられ、ライニング部材と共に螺旋管の内面を構成する。 Patent Document 1 discloses an example of a conventional pipe rehabilitation member including a lining member and a connecting member. In the technique of Patent Document 1, the lining member (strip-shaped body) includes a strip-shaped substrate and joint recesses formed at both ends thereof. A metal reinforcing material is attached to this lining member. On the other hand, the connecting member (fitting material) includes a joint convex portion that fits into the joint concave portion of the lining member. When rehabilitating an existing pipe, a pipe making machine installed in a manhole is used to spirally wind the lining member and connect the side edges of the lining member with a connecting member to make a spiral pipe. The spiral pipes that are piped and made in the manhole are sequentially sent into the existing pipes. At this time, the connecting member is attached from the inner surface side of the lining member and constitutes the inner surface of the spiral tube together with the lining member.

特開２０１５−１０５６５８号公報Japanese Unexamined Patent Publication No. 2015-105658

特許文献１に開示されているような、マンホール内で製管した螺旋管を既設管内に順次送り込んでいく牽引式または元押し式の管路更生工法では、螺旋管の軸方向長さが長くなるに従って既設管に対する螺旋管の挿入抵抗が大きくなるので、既設管内に螺旋管を適切に送り込めなくなる恐れがある。 In the traction type or push-type pipeline rehabilitation method in which the spiral pipe produced in the manhole is sequentially sent into the existing pipe as disclosed in Patent Document 1, the axial length of the spiral pipe becomes long. As a result, the insertion resistance of the spiral pipe to the existing pipe increases, so that the spiral pipe may not be properly fed into the existing pipe.

それゆえに、この発明の主たる目的は、新規な、管更生部材を提供することである。 Therefore, the main object of the present invention is to provide a novel tube rehabilitation member.

この発明の他の目的は、マンホール内で製管した螺旋管を既設管内に適切に送り込むことができる、管更生部材を提供することである。 Another object of the present invention is to provide a pipe rehabilitation member capable of appropriately feeding a spiral pipe made in a manhole into an existing pipe.

第１の発明は、マンホール内でライニング部材を螺旋状に巻き回して螺旋管を製管しながら、螺旋管を既設管内に送り込んでいく管路更生工法に用いられる管更生部材であって、ライニング部材と、螺旋状に巻き回したライニング部材の外面側から取り付けられて当該ライニング部材の隣り合う側縁部どうしを連結する連結部材とを含み、ライニング部材は、螺旋管の内面を構成する一方主面を有する帯板状のライニング基体、およびライニング基体の他方主面の両側部のそれぞれに形成される第１嵌合部を備え、連結部材は、帯板状の連結基体、連結基体の一方主面に形成され、第１嵌合部と嵌め合わされる第２嵌合部、および連結基体の他方主面に形成され、当該連結基体の長手方向に延びる突条を備える、管更生部材である。 The first invention is a pipe rehabilitation member used in a pipeline rehabilitation method in which a lining member is spirally wound in a manhole to form a spiral pipe and the spiral pipe is sent into an existing pipe. The lining member includes a member and a connecting member attached from the outer surface side of the spirally wound lining member to connect adjacent side edges of the lining member, while the lining member constitutes the inner surface of the spiral tube. A strip-shaped lining substrate having a surface and first fitting portions formed on both sides of the other main surface of the lining substrate are provided, and the connecting member is one main of the strip-shaped connecting substrate and the connecting substrate. It is a pipe rehabilitation member having a second fitting portion formed on a surface and fitted with a first fitting portion, and a ridge formed on the other main surface of the connecting base and extending in the longitudinal direction of the connecting base.

第１の発明では、管更生部材は、ライニング部材と連結部材とを含み、マンホール内で螺旋管を製管しながら、製管した螺旋管を既設管内に送り込んでいく管路更生工法に用いられる。ライニング部材は、螺旋管の内面を構成する一方主面を有する帯板状のライニング基体と、ライニング基体の他方主面の両側部のそれぞれに形成される第１嵌合部とを備える。一方、連結部材は、螺旋状に巻き回したライニング部材の外面側から取り付けられて、ライニング部材の隣り合う側縁部どうしを連結する部材であって、帯板状の連結基体と、連結基体の一方主面に形成されて第１嵌合部と嵌め合わされる第２嵌合部とを備える。そして、連結部材が備える連結基体の他方主面（つまり螺旋管を形成したときの外面側の面）には、連結基体の長手方向に延びる突条が形成される。 In the first invention, the pipe rehabilitation member includes a lining member and a connecting member, and is used in a pipeline rehabilitation method in which a spiral pipe is produced in a manhole and the produced spiral pipe is sent into an existing pipe. .. The lining member includes a strip-shaped lining base having one main surface constituting the inner surface of the spiral tube, and first fitting portions formed on both side portions of the other main surface of the lining base. On the other hand, the connecting member is a member that is attached from the outer surface side of the spirally wound lining member to connect the adjacent side edges of the lining member, and is a strip-shaped connecting base and a connecting base. On the other hand, a second fitting portion formed on the main surface and fitted with the first fitting portion is provided. Then, a ridge extending in the longitudinal direction of the connecting base is formed on the other main surface of the connecting base (that is, the surface on the outer surface side when the spiral tube is formed) included in the connecting member.

第１の発明によれば、螺旋管の外面側に連結部材を配置し、その連結部材が備える連結基体の他方主面に突条を形成したので、螺旋管を既設管内に送り込むときには、既設管の内面と螺旋管の外面との接触面積が減少する。これにより、螺旋管の挿入抵抗を低減でき、既設管との摺接による螺旋管の損傷も低減できる。したがって、マンホール内で製管した螺旋管を既設管内に適切に送り込むことができる。 According to the first invention, since the connecting member is arranged on the outer surface side of the spiral pipe and the ridge is formed on the other main surface of the connecting base provided by the connecting member, when the spiral pipe is sent into the existing pipe, the existing pipe is used. The contact area between the inner surface of the spiral tube and the outer surface of the spiral tube is reduced. As a result, the insertion resistance of the spiral pipe can be reduced, and damage to the spiral pipe due to sliding contact with the existing pipe can also be reduced. Therefore, the spiral pipe produced in the manhole can be appropriately fed into the existing pipe.

第２の発明は、第１の発明に従属し、突条の先端は、連結部材によってライニング部材の隣り合う側縁部どうしを連結して螺旋管を形成した状態において、螺旋管の径方向におけるライニング部材の最外部よりも外側に位置する。 The second invention is subordinate to the first invention, and the tip of the ridge is in the radial direction of the spiral tube in a state where adjacent side edges of the lining member are connected to each other by a connecting member to form a spiral tube. It is located outside the outermost part of the lining member.

第２の発明によれば、突条の先端がライニング部材の最外部よりも外側に位置するので、連結部材によってライニング部材を適切に保護できる。 According to the second invention, since the tip of the ridge is located outside the outermost part of the lining member, the lining member can be appropriately protected by the connecting member.

第３の発明は、第１または第２の発明に従属し、連結基体の他方主面は、連結部材によってライニング部材の隣り合う側縁部どうしを連結して螺旋管を形成した状態において、螺旋管の径方向におけるライニング部材の最外部よりも外側に位置する。したがって、連結部材によってライニング部材をより確実に保護できる。 The third invention is dependent on the first or second invention, and the other main surface of the connecting substrate is spiral in a state where adjacent side edges of the lining member are connected to each other by a connecting member to form a spiral tube. It is located outside the outermost part of the lining member in the radial direction of the pipe. Therefore, the connecting member can more reliably protect the lining member.

第４の発明は、第１から第３のいずれかの発明に従属し、突条は、連結基体の他方主面の両側部のそれぞれに形成される。 The fourth invention is subordinate to any one of the first to third inventions, and ridges are formed on both sides of the other main surface of the connecting substrate.

第５の発明は、第１から第４のいずれかの発明に従属し、連結部材の幅方向外側面に形成される側面突条をさらに備える。 The fifth invention is subordinate to any one of the first to fourth inventions, and further includes side ridges formed on the outer surface in the width direction of the connecting member.

第５の発明によれば、側面突条が充填材に対するアンカ効果を発揮するので、充填材から螺旋管が外れ難くなり、螺旋管と充填材との固定強度が向上する。したがって、充填材によって既設管と螺旋管とを強固に一体化することができる。 According to the fifth invention, since the side ridge exerts an anchor effect on the filler, the spiral tube is hard to come off from the filler, and the fixing strength between the spiral tube and the filler is improved. Therefore, the existing pipe and the spiral pipe can be firmly integrated by the filler.

この発明によれば、螺旋管の外面側に連結部材を配置し、その連結部材が備える連結基体の他方主面に突条を形成したので、螺旋管を既設管内に送り込むときには、既設管の内面と螺旋管の外面との接触面積が減少する。これにより、螺旋管の挿入抵抗を低減でき、既設管との摺接による螺旋管の損傷も低減できる。したがって、マンホール内で製管した螺旋管を既設管内に適切に送り込むことができる。 According to the present invention, since the connecting member is arranged on the outer surface side of the spiral pipe and the ridge is formed on the other main surface of the connecting base provided by the connecting member, when the spiral pipe is sent into the existing pipe, the inner surface of the existing pipe is formed. And the contact area with the outer surface of the spiral tube is reduced. As a result, the insertion resistance of the spiral pipe can be reduced, and damage to the spiral pipe due to sliding contact with the existing pipe can also be reduced. Therefore, the spiral pipe produced in the manhole can be appropriately fed into the existing pipe.

この発明の上述の目的、その他の目的、特徴および利点は、図面を参照して行う後述の実施例の詳細な説明から一層明らかとなろう。 The above-mentioned object, other object, feature and advantage of the present invention will become more apparent from the detailed description of the examples described below with reference to the drawings.

この発明の一実施例である管更生部材を用いて既設管を更生する様子を模式的に示す図解図である。It is a schematic diagram which shows the state of rehabilitating an existing pipe using the pipe rehabilitation member which is one Example of this invention. 図１の管更生部材を用いて螺旋管を形成する様子を示す図解図である。It is a schematic diagram which shows the state of forming a spiral tube using the tube rehabilitation member of FIG. 図１の管更生部材が備えるライニング部材を示す斜視図である。It is a perspective view which shows the lining member provided in the pipe rehabilitation member of FIG. 図３のライニング部材を示す断面図である。It is sectional drawing which shows the lining member of FIG. 図１の管更生部材が備える連結部材を示す斜視図である。It is a perspective view which shows the connecting member included in the pipe rehabilitation member of FIG. 図５の連結部材を示す断面図である。It is sectional drawing which shows the connecting member of FIG. 図５の連結部材を用いて図３のライニング部材の側縁部どうしを連結した様子を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which side edge portions of the lining member of FIG. 3 are connected to each other using the connecting member of FIG. 図３のライニング部材と図５の連結部材との連結部分を示す断面図である。It is sectional drawing which shows the connecting part of the lining member of FIG. 3 and the connecting member of FIG. 図１の管更生部材を用いて形成した螺旋管によって既設管を更生した様子を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which an existing pipe is rehabilitated by a spiral pipe formed by using the pipe rehabilitation member of FIG.

図１を参照して、この発明の一実施例である管更生部材１０は、発進側マンホール１１０内でライニング部材１２を螺旋状に巻き回して螺旋管（ライニング管）１０２を製管しながら、製管した螺旋管１０２を既設管１００内に順次送り込んでいく元押し式の管路更生工法に用いられる。詳細は後述するように、この管更生部材１０は、ライニング部材１２と、ライニング部材１２の側縁部どうしを連結する連結部材１４とで構成される。 With reference to FIG. 1, in the pipe rehabilitation member 10 according to an embodiment of the present invention, the lining member 12 is spirally wound in the starting side manhole 110 to form a spiral pipe (lining pipe) 102 while forming a pipe. It is used in a push-type pipeline rehabilitation method in which the manufactured spiral pipe 102 is sequentially sent into the existing pipe 100. As will be described in detail later, the pipe rehabilitation member 10 is composed of a lining member 12 and a connecting member 14 that connects the side edges of the lining member 12.

なお、管更生部材１０は、鉄筋コンクリート製、合成樹脂製および金属製などの種々の既設管１００の更生に用いることが可能であり、特に、内部に作業者が入って作業をすることが難しい３００ｍｍ以上１０００ｍｍ以下の中口径を有する下水管の更生に好適に用いられる。ただし、管更生部材１０は、１０００ｍｍを超える口径を有する既設管１００の更生に用いることも可能である。 The pipe rehabilitation member 10 can be used for rehabilitation of various existing pipes 100 made of reinforced concrete, synthetic resin, metal, etc., and in particular, it is difficult for an operator to enter the inside of the pipe rehabilitation member 10 to perform the work. It is suitably used for rehabilitation of sewer pipes having a medium diameter of 1000 mm or more and 1000 mm or less. However, the pipe rehabilitation member 10 can also be used for rehabilitation of the existing pipe 100 having a diameter of more than 1000 mm.

図２に示すように、管更生部材１０は、螺旋管１０２を形成するための部材であって、長尺帯板状のライニング部材１２と、螺旋状に巻き回したライニング部材１２の隣り合う側縁部どうしを連結する長尺帯板状の連結部材１４とを含む。この実施例では、ライニング部材１２は、螺旋状に巻き回したときの外面側に連結部材１４との嵌合部（第１嵌合部２２）を備えており、連結部材１４は、螺旋状に巻き回したライニング部材１２の外面側からライニング部材１２に取り付けられる。なお、管更生部材１０を用いて形成する螺旋管１０２の外径は、既設管１００の内径よりも少し小さい大きさに設定される。以下、ライニング部材１２および連結部材１４の構成について具体的に説明する。 As shown in FIG. 2, the pipe rehabilitation member 10 is a member for forming the spiral pipe 102, and is adjacent to the long strip-shaped lining member 12 and the spirally wound lining member 12. Includes a long strip-shaped connecting member 14 that connects the edges. In this embodiment, the lining member 12 is provided with a fitting portion (first fitting portion 22) with the connecting member 14 on the outer surface side when wound in a spiral shape, and the connecting member 14 is spirally wound. It is attached to the lining member 12 from the outer surface side of the wound lining member 12. The outer diameter of the spiral pipe 102 formed by using the pipe rehabilitation member 10 is set to a size slightly smaller than the inner diameter of the existing pipe 100. Hereinafter, the configurations of the lining member 12 and the connecting member 14 will be specifically described.

図３および図４に示すように、ライニング部材１２は、螺旋管１０２の主構成要素となる長尺の部材であって、帯板状の基体（ライニング基体）２０を含む。基体２０の一方主面２０ａは、螺旋管１０２の内面を構成する面であり、平滑面となっている。基体２０の幅は、たとえば７５ｍｍであり、基体２０の厚み（肉厚）は、たとえば３ｍｍである。 As shown in FIGS. 3 and 4, the lining member 12 is a long member that is a main component of the spiral tube 102, and includes a strip-shaped substrate (lining substrate) 20. One main surface 20a of the substrate 20 is a surface constituting the inner surface of the spiral tube 102, and is a smooth surface. The width of the substrate 20 is, for example, 75 mm, and the thickness (wall thickness) of the substrate 20 is, for example, 3 mm.

基体２０の他方主面２０ｂ側、つまりライニング部材１２を螺旋状に巻き回したときの外面側の両側部のそれぞれには、後述する連結部材１４の第２嵌合部５２と嵌め合わされる第１嵌合部２２が形成される。第１嵌合部２２は、基体２０の他方主面２０ｂの両側縁部に形成される第１係合部２４と、第１係合部２４よりも基体２０の幅方向における内側に、第１係合部２４と所定間隔をあけて形成される第３係合部２６とを含む。 The first main surface 20b side of the substrate 20, that is, both side portions on the outer surface side when the lining member 12 is spirally wound, is fitted with the second fitting portion 52 of the connecting member 14, which will be described later. The fitting portion 22 is formed. The first fitting portion 22 is a first engaging portion 24 formed on both side edges of the other main surface 20b of the substrate 20 and inside the first engaging portion 24 in the width direction of the substrate 20. It includes an engaging portion 24 and a third engaging portion 26 formed at a predetermined interval.

第１係合部２４は、後述する連結部材１４の第２係合部５４と係合される部分である。この第１係合部２４は、基体２０の長手方向に延びる第１突条２８を有する。この第１突条２８の一方側面２８ａ（基体２０の幅方向における内側の面）の先端部には、第１係止片３０が形成される。また、第１突条２８の他方側面２８ｂは、基体２０から離れるに従って基体２０の幅方向における内側に傾斜する傾斜面になっている。 The first engaging portion 24 is a portion that is engaged with the second engaging portion 54 of the connecting member 14 described later. The first engaging portion 24 has a first ridge 28 extending in the longitudinal direction of the substrate 20. A first locking piece 30 is formed at the tip of one side surface 28a (inner surface in the width direction of the substrate 20) of the first ridge 28. Further, the other side surface 28b of the first ridge 28 is an inclined surface that inclines inward in the width direction of the base 20 as the distance from the base 20 increases.

第３係合部２６は、後述する連結部材１４の第４係合部５６と係合される部分である。この第３係合部２６は、基体２０の長手方向に延びる第３突条３２を有する。この第３突条３２の一方側面３２ａ（基体２０の幅方向における内側の面）の先端部には、第３係止片３４が形成される。また、第３突条３２の他方側面３２ｂの先端部には、基体２０から離れるに従って基体２０の幅方向における内側に傾斜する傾斜面が形成される。 The third engaging portion 26 is a portion that is engaged with the fourth engaging portion 56 of the connecting member 14 described later. The third engaging portion 26 has a third ridge 32 extending in the longitudinal direction of the substrate 20. A third locking piece 34 is formed at the tip of one side surface 32a (inner surface in the width direction of the substrate 20) of the third ridge 32. Further, at the tip of the other side surface 32b of the third ridge 32, an inclined surface that inclines inward in the width direction of the substrate 20 is formed as the distance from the substrate 20 increases.

また、基体２０の幅方向中央部には、基体２０の一部を他方主面２０ｂ側に突出するように幅方向に弛ませた変位吸収部３６が形成される。変位吸収部３６の肉厚は、基体２０の他の部分の肉厚と略同じ大きさである。変位吸収部３６は、一方主面２０ａから離れるに従って幅方向に膨らむように形成されており、幅方向両側部のそれぞれに形成される屈曲部３８と、屈曲部３８どうしを連結する連結部４０とを有する。連結部４０は、屈曲部３８よりも曲率が小さくなるように形成されており、連結部４０の内面４０ａは、平坦面となっている。また、変位吸収部３６の基端部間には、隙間４２が形成されている。隙間４２の幅は、たとえば１ｍｍである。 Further, at the central portion in the width direction of the substrate 20, a displacement absorbing portion 36 is formed in which a part of the substrate 20 is loosened in the width direction so as to project toward the other main surface 20b. The wall thickness of the displacement absorbing portion 36 is substantially the same as the wall thickness of the other parts of the substrate 20. The displacement absorbing portion 36 is formed so as to bulge in the width direction as the distance from the main surface 20a increases, and the bent portions 38 formed on both side portions in the width direction and the connecting portion 40 connecting the bent portions 38 to each other. Has. The connecting portion 40 is formed so that the curvature is smaller than that of the bent portion 38, and the inner surface 40a of the connecting portion 40 is a flat surface. Further, a gap 42 is formed between the base ends of the displacement absorbing portions 36. The width of the gap 42 is, for example, 1 mm.

このように基体２０が変位吸収部３６を有することで、ライニング部材１２を用いて形成された螺旋管１０２は、この変位吸収部３６の部分において、軸方向および曲がり方向に変形し易くなる。このため、後述のように既設管１００内に螺旋管１０２を送り込むときには、変位吸収部３６が変形することにより、既設管１００の曲り部、屈曲部および段差部に螺旋管１０２が追従可能となる。また、施工後において、地震が発生した際には、変位吸収部３６が伸長して軸方向変位を吸収するので、ライニング部材１２の側縁部どうしの連結部分における変形が抑制され、ライニング部材１２の第１嵌合部２２と連結部材１４の第２嵌合部５２との嵌合が適切に保持される。 Since the substrate 20 has the displacement absorbing portion 36 in this way, the spiral tube 102 formed by using the lining member 12 is easily deformed in the axial direction and the bending direction at the portion of the displacement absorbing portion 36. Therefore, when the spiral pipe 102 is sent into the existing pipe 100 as described later, the displacement absorbing portion 36 is deformed so that the spiral pipe 102 can follow the bent portion, the bent portion, and the stepped portion of the existing pipe 100. .. Further, after the construction, when an earthquake occurs, the displacement absorbing portion 36 extends to absorb the axial displacement, so that the deformation at the connecting portion between the side edge portions of the lining member 12 is suppressed, and the lining member 12 The first fitting portion 22 of the above and the second fitting portion 52 of the connecting member 14 are properly held.

また、変位吸収部３６が２つの屈曲部３８と屈曲部３８よりも曲率が小さい連結部４０とを有することで、変位吸収部３６の高さ方向（螺旋管１０２の径方向）の大きさを抑制しつつ、変位吸収部３６の幅方向（螺旋管１０２の軸方向）における伸長可能幅を大きくすることができる。さらに、変位吸収部３６の基端部間に隙間４２を有することで、変位吸収部３６が幅方向に縮むことも可能となる。さらにまた、変位吸収部３６が一方主面２０ａから離れるに従って幅方向に膨らむように形成されることで、変位吸収部３６の幅方向外側面が充填材１０４（図９参照）に対するアンカ部としても機能する。 Further, since the displacement absorbing portion 36 has two bent portions 38 and a connecting portion 40 having a curvature smaller than that of the bent portion 38, the size of the displacement absorbing portion 36 in the height direction (the radial direction of the spiral tube 102) can be increased. While suppressing the displacement, the extendable width of the displacement absorbing portion 36 in the width direction (axial direction of the spiral tube 102) can be increased. Further, by having a gap 42 between the base ends of the displacement absorbing portion 36, the displacement absorbing portion 36 can be contracted in the width direction. Furthermore, since the displacement absorbing portion 36 is formed so as to bulge in the width direction as the distance from the main surface 20a increases, the outer surface of the displacement absorbing portion 36 in the width direction can be used as an anchor portion for the filler 104 (see FIG. 9). Function.

このようなライニング部材１２は、たとえば、ポリエチレン樹脂および硬質塩化ビニル樹脂などの合成樹脂の押出成形によって一体成形される。そして、第１係合部２４および第３係合部２６を含む第１嵌合部２２、および変位吸収部３６は、基体２０の長手方向の全長に亘って形成される。この際、ライニング部材１２は、ポリエチレン樹脂およびポリプロピレン樹脂などのポリオレフィン系樹脂によって形成されることが好ましい。この実施例のライニング部材１２は、高密度ポリエチレン樹脂によって形成される。 Such a lining member 12 is integrally molded by extrusion molding of a synthetic resin such as a polyethylene resin and a hard vinyl chloride resin, for example. Then, the first fitting portion 22 including the first engaging portion 24 and the third engaging portion 26 and the displacement absorbing portion 36 are formed over the entire length of the substrate 20 in the longitudinal direction. At this time, the lining member 12 is preferably formed of a polyolefin resin such as a polyethylene resin and a polypropylene resin. The lining member 12 of this embodiment is made of high-density polyethylene resin.

ライニング部材１２をポリエチレン樹脂などのポリオレフィン系樹脂によって形成することで、ライニング部材１２の長手方向の端部どうしを融着接合することが可能となり、この接合部分の強度および円滑性を適切に確保できる。また、ポリオレフィン系樹脂は、柔軟性があるので、ポリオレフィン系樹脂によって形成したライニング部材１２は螺旋状に巻き回し易い。したがって、３００ｍｍ以上１０００ｍｍ以下の中口径を有する既設管１００に対応する大きさ（つまり比較的小さい口径）の螺旋管１０２を適切に形成できる。さらに、変位吸収部３６が変形し易くなり、施工時および地震時などにおいて螺旋管１０２が変位に追従し易くなる。さらに、ポリオレフィン系樹脂は、耐摩耗性および耐薬品性などに優れるので、螺旋管１０２の内面を構成するライニング部材１２をポリオレフィン系樹脂によって形成することで、螺旋管１０２の耐摩耗性および耐薬品性などの耐久性も向上する。 By forming the lining member 12 with a polyolefin resin such as polyethylene resin, it is possible to fuse-bond the ends of the lining member 12 in the longitudinal direction, and the strength and smoothness of the bonded portion can be appropriately ensured. .. Further, since the polyolefin-based resin is flexible, the lining member 12 formed of the polyolefin-based resin can be easily wound in a spiral shape. Therefore, the spiral pipe 102 having a size (that is, a relatively small diameter) corresponding to the existing pipe 100 having a medium diameter of 300 mm or more and 1000 mm or less can be appropriately formed. Further, the displacement absorbing portion 36 is easily deformed, and the spiral pipe 102 is easily followed by the displacement during construction, an earthquake, or the like. Further, since the polyolefin resin is excellent in abrasion resistance and chemical resistance, the lining member 12 constituting the inner surface of the spiral tube 102 is formed of the polyolefin resin to form the wear resistance and chemical resistance of the spiral tube 102. Durability such as sex is also improved.

図５および図６に示すように、連結部材１４は、ライニング部材１２の側縁部どうしを連結するための長尺の部材である。この連結部材１４は、上述のようにライニング部材１２の外面側（他方主面２０ｂ側）から取り付けられる部材であって、ライニング部材１２および連結部材１４を用いて螺旋管１０２を形成した状態において、螺旋管１０２の外面側に配置され、螺旋管１０２の内面側には露出しないように構成されている。 As shown in FIGS. 5 and 6, the connecting member 14 is a long member for connecting the side edges of the lining member 12. The connecting member 14 is a member attached from the outer surface side (the other main surface 20b side) of the lining member 12 as described above, and in a state where the spiral pipe 102 is formed by using the lining member 12 and the connecting member 14. It is arranged on the outer surface side of the spiral tube 102 and is configured not to be exposed on the inner surface side of the spiral tube 102.

連結部材１４は、帯板状の基体（連結基体）５０を備える。基体５０の幅は、たとえば３０ｍｍであり、基体５０の厚みは、たとえば３ｍｍである。 The connecting member 14 includes a strip-shaped base (connecting base) 50. The width of the substrate 50 is, for example, 30 mm, and the thickness of the substrate 50 is, for example, 3 mm.

基体５０の一方主面５０ａは、ライニング部材１２の基体２０の他方主面２０ｂに対向する面であり、この基体５０の一方主面５０ａの両側部のそれぞれには、ライニング部材１２の第１嵌合部２２と嵌め合わされる第２嵌合部５２が形成される。この第２嵌合部５２は、第２係合部５４と第４係合部５６とを含む。第４係合部５６は、基体５０の一方主面５０ａの両側縁部に形成される。第２係合部５４は、第４係合部５６よりも基体５０の幅方向における内側に、第４係合部５６と所定間隔をあけて形成される。 One main surface 50a of the base 50 is a surface of the lining member 12 facing the other main surface 20b of the base 20, and the lining member 12 is first fitted to each of both side portions of the one main surface 50a of the base 50. A second fitting portion 52 to be fitted with the joining portion 22 is formed. The second fitting portion 52 includes a second engaging portion 54 and a fourth engaging portion 56. The fourth engaging portion 56 is formed on both side edges of one main surface 50a of the substrate 50. The second engaging portion 54 is formed inside the base 50 in the width direction of the fourth engaging portion 56 at a predetermined distance from the fourth engaging portion 56.

第２係合部５４は、基体５０の長手方向に延びる第２突条５８を有する。この第２突条５８の一方側面５８ａ（基体５０の幅方向における内側の面）の先端部には、ライニング部材１２の第１係止片３０を係止する第２係止片６０が形成される。一方、第４係合部５６は、基体５０の長手方向に延びる第４突条６２を有する。この第４突条６２の一方側面６２ａ（基体５０の幅方向における内側の面）の先端部には、ライニング部材１２の第３係止片３４を係止する第４係止片６４が形成される。 The second engaging portion 54 has a second ridge 58 extending in the longitudinal direction of the substrate 50. A second locking piece 60 for locking the first locking piece 30 of the lining member 12 is formed at the tip of one side surface 58a (inner surface in the width direction of the substrate 50) of the second ridge 58. To. On the other hand, the fourth engaging portion 56 has a fourth ridge 62 extending in the longitudinal direction of the substrate 50. A fourth locking piece 64 for locking the third locking piece 34 of the lining member 12 is formed at the tip of one side surface 62a (inner surface in the width direction of the substrate 50) of the fourth ridge 62. To.

また、基体５０の一方主面５０ａには、第２係合部５４と第４係合部５６との間に、弾性体であるエラストマ等によって帯状に形成される止水部６６が設けられる。この止水部６６は、ライニング部材１２の第１嵌合部２２と連結部材１４の第２嵌合部５２とを嵌め合わせた際に、基体５０の一方主面５０ａとライニング部材１２の第３係合部２６の先端部との間に挟み込まれることで、十分に圧縮される（図９参照）。これにより、ライニング部材１２の側縁部どうしの連結部分における水密性が確保される。 Further, on one main surface 50a of the substrate 50, a water blocking portion 66 formed in a band shape by an elastic body such as an elastomer is provided between the second engaging portion 54 and the fourth engaging portion 56. When the first fitting portion 22 of the lining member 12 and the second fitting portion 52 of the connecting member 14 are fitted to each other, the water stop portion 66 is the third main surface 50a of the base 50 and the third fitting portion 12 of the lining member 12. By being sandwiched between the engaging portion 26 and the tip portion, it is sufficiently compressed (see FIG. 9). As a result, watertightness is ensured at the connecting portion between the side edge portions of the lining member 12.

一方、基体５０の他方主面５０ｂは、既設管１００の内面と対向する面であり、この基体５０の他方主面５０ｂの両側部のそれぞれには、基体５０の長手方向に延びる断面半円状の突条６８が形成される。この突条６８は、後述するように螺旋管１０２を既設管１００内に送り込むときに、既設管１００の内面と接触する部分となる。基体５０の他方主面５０ｂの両側部に突条６８を形成することで、既設管１００の内面に対して突条６８がバランス良く接触する。 On the other hand, the other main surface 50b of the base 50 is a surface facing the inner surface of the existing pipe 100, and each of both side portions of the other main surface 50b of the base 50 has a semicircular cross section extending in the longitudinal direction of the base 50. The ridge 68 is formed. The ridge 68 becomes a portion that comes into contact with the inner surface of the existing pipe 100 when the spiral pipe 102 is fed into the existing pipe 100 as described later. By forming the ridges 68 on both sides of the other main surface 50b of the substrate 50, the ridges 68 come into contact with the inner surface of the existing pipe 100 in a well-balanced manner.

また、連結部材１４の幅方向外側面のそれぞれ（この実施例では第４突条６２の他方側面６２ｂ）には、基体５０の長手方向に延びる断面矩形状の側面突条７０が形成される。この連結部材１４は、充填材１０４に対するアンカ部として機能する。 Further, a side ridge 70 having a rectangular cross section extending in the longitudinal direction of the substrate 50 is formed on each of the outer surfaces of the connecting member 14 in the width direction (in this embodiment, the other side surface 62b of the fourth ridge 62). The connecting member 14 functions as an anchor portion for the filler 104.

このような連結部材１４は、たとえば、硬質塩化ビニル樹脂およびポリエチレン樹脂などの合成樹脂の押出成形によって一体成形される。そして、第２係合部５４および第４係合部５６を含む第２嵌合部５２、突条６８および側面突条７０は、基体５０の長手方向の全長に亘って形成される。この際、連結部材１４は、ポリオレフィン系樹脂よりも強度の大きい硬質塩化ビニル樹脂などの合成樹脂によって形成されることが好ましい。この実施例の連結部材１４は、硬質塩化ビニル樹脂によって形成される。なお、止水部６６は連結部材１４と共押出により長手方向の全長に亘って設けられる。 Such a connecting member 14 is integrally molded by, for example, extrusion molding of a synthetic resin such as a rigid vinyl chloride resin and a polyethylene resin. Then, the second fitting portion 52 including the second engaging portion 54 and the fourth engaging portion 56, the ridge 68, and the side ridge 70 are formed over the entire length of the base 50 in the longitudinal direction. At this time, the connecting member 14 is preferably formed of a synthetic resin such as a hard vinyl chloride resin having a strength higher than that of the polyolefin resin. The connecting member 14 of this embodiment is made of a rigid vinyl chloride resin. The water stop portion 66 is provided over the entire length in the longitudinal direction by coextrusion with the connecting member 14.

連結部材１４を強度の大きい硬質塩化ビニル樹脂によって形成することで、ライニング部材１２および連結部材１４の双方をポリオレフィン系樹脂で形成することと比較して、形成される螺旋管１０２全体の剛性を向上させることができる。また、後述のように螺旋管１０２を既設管１００内に送り込むときに、連結部材１４によってライニング部材１２を適切に保護できる。さらに、第２嵌合部５２の強度も大きくなるので、第１嵌合部２２と第２嵌合部５２との嵌合が外れ難くなり、ライニング部材１２の側縁部どうしを強固に連結できる。したがって、地震時などにおいてこの連結部分の変形が抑えられ、止水機能を確保できる。さらにまた、硬質塩化ビニル樹脂は、ポリオレフィン系樹脂と比較して成形性がよく、連結部材１４の寸法を出し易く、ライニング部材１２の側縁部どうしを確実に連結できる。また、硬質塩化ビニル樹脂は、ポリオレフィン系樹脂と比較して止水材の付着性が高い。 By forming the connecting member 14 with a high-strength rigid vinyl chloride resin, the rigidity of the entire spiral tube 102 formed is improved as compared with the case where both the lining member 12 and the connecting member 14 are formed of a polyolefin resin. Can be made to. Further, when the spiral pipe 102 is sent into the existing pipe 100 as described later, the lining member 12 can be appropriately protected by the connecting member 14. Further, since the strength of the second fitting portion 52 is also increased, the fitting between the first fitting portion 22 and the second fitting portion 52 is difficult to be disengaged, and the side edge portions of the lining member 12 can be firmly connected to each other. .. Therefore, deformation of this connecting portion is suppressed in the event of an earthquake or the like, and a water stopping function can be ensured. Furthermore, the rigid vinyl chloride resin has better moldability than the polyolefin resin, the dimensions of the connecting member 14 can be easily obtained, and the side edges of the lining member 12 can be reliably connected to each other. Further, the rigid vinyl chloride resin has a higher adhesiveness to the water blocking material than the polyolefin resin.

図７および図８に示すように、螺旋状に巻き回したライニング部材１２の隣り合う側縁部どうしを連結部材１４によって連結する際には、ライニング部材１２の基体２０の一方主面２０ａどうしが面一となるように、基体２０の側縁どうしを突き合わせた状態にする。そして、螺旋状に巻き回したライニング部材１２の外面側から連結部材１４を押し込むようにして、ライニング部材１２の第１嵌合部２２に対して連結部材１４の第２嵌合部５２を長手方向に順次嵌め合わせていく。すると、第２嵌合部５２の第２係止片６０および第４係止片６４のそれぞれによって第１嵌合部２２の第１係止片３０および第３係止片３４のそれぞれが係止されて、連結部材１４によってライニング部材１２の側縁部どうしが連結される。 As shown in FIGS. 7 and 8, when the adjacent side edges of the spirally wound lining member 12 are connected to each other by the connecting member 14, one main surface 20a of the base 20 of the lining member 12 is connected to each other. The side edges of the substrate 20 are butted against each other so as to be flush with each other. Then, the connecting member 14 is pushed in from the outer surface side of the spirally wound lining member 12, and the second fitting portion 52 of the connecting member 14 is pushed in the longitudinal direction with respect to the first fitting portion 22 of the lining member 12. Sequentially fit into. Then, each of the first locking piece 30 and the third locking piece 34 of the first fitting portion 22 is locked by the second locking piece 60 and the fourth locking piece 64 of the second fitting portion 52, respectively. Then, the side edges of the lining member 12 are connected to each other by the connecting member 14.

この実施例では、連結部材１４によってライニング部材１２の側縁部どうしを連結した状態、つまり螺旋管１０２を形成した状態においては、ライニング部材１２の基体２０の側縁どうしが直接突き合わされ、連結部材１４は、螺旋管１０２の内面側に露出しない。したがって、螺旋管１０２の内面に表れる継ぎ目の数を低減できるので、螺旋管１０２の内面を円滑にすることができ、螺旋管１０２の流下性能を向上できる。また、螺旋管１０２の内面に露出するのは、ポリエチレン樹脂（ポリオレフィン系樹脂）によって形成されるライニング部材１２のみであるので、螺旋管１０２の耐摩耗性および耐薬品性などの耐久性も向上する。 In this embodiment, in a state where the side edges of the lining member 12 are connected to each other by the connecting member 14, that is, in a state where the spiral tube 102 is formed, the side edges of the base 20 of the lining member 12 are directly abutted with each other, and the connecting member 14 is not exposed on the inner surface side of the spiral tube 102. Therefore, since the number of seams appearing on the inner surface of the spiral pipe 102 can be reduced, the inner surface of the spiral pipe 102 can be smoothed, and the flow-down performance of the spiral pipe 102 can be improved. Further, since only the lining member 12 formed of the polyethylene resin (polyolefin resin) is exposed on the inner surface of the spiral tube 102, the durability such as wear resistance and chemical resistance of the spiral tube 102 is also improved. ..

また、連結部材１４によってライニング部材１２の側縁部どうしを連結した状態において、その連結部分では、隣り合う基体２０の側縁どうしが突き合わされ、ライニング部材１２の第１係止片３０が基体２０の側縁を中心として互いに外向きとなり、連結部材１４の第２係止片６０が基体２０の側縁を中心として互いに内向きとなる。つまり、ライニング部材１２の側縁部どうしの連結部分では、連結部材１４の第２係合部５４によってライニング部材１２の第１係合部２４を挟み込む状態となる。このため、ライニング部材１２には、第１係合部２４と第２係合部５４との係合によって、隣り合う基体２０の側縁どうしが近づく方向（密着する方向）に力が作用する。したがって、ライニング部材１２の基体２０の側縁どうしを適切に密着させた状態で固定することができる。 Further, in a state where the side edges of the lining member 12 are connected to each other by the connecting member 14, the side edges of the adjacent bases 20 are butted against each other at the connecting portion, and the first locking piece 30 of the lining member 12 is the base 20. The second locking pieces 60 of the connecting member 14 face each other inward with respect to the side edge of the substrate 20. That is, in the connecting portion between the side edge portions of the lining member 12, the first engaging portion 24 of the lining member 12 is sandwiched by the second engaging portion 54 of the connecting member 14. Therefore, due to the engagement between the first engaging portion 24 and the second engaging portion 54, a force acts on the lining member 12 in the direction in which the side edges of the adjacent bases 20 approach each other (the direction in which they come into close contact with each other). Therefore, the side edges of the base 20 of the lining member 12 can be fixed in an appropriately adhered state.

同様に、ライニング部材１２の側縁部どうしの連結部分では、基体２０の側縁を中心として、ライニング部材１２の第３係止片３４が互いに外向きとなり、連結部材１４の第４係止片６４が互いに内向きとなって、連結部材１４の第４係合部５６によってライニング部材１２の第３係合部２６を挟み込む状態となる。このため、ライニング部材１２には、第１係合部２４と第２係合部５４との係合に加えて、第３係合部２６と第４係合部５６との係合によっても、隣り合う基体２０の側縁どうしが近づく方向に力が作用する。したがって、ライニング部材１２の基体２０の側縁どうしをより適切に密着させた状態で固定することができる。 Similarly, in the connecting portion between the side edges of the lining member 12, the third locking piece 34 of the lining member 12 faces outward from each other with the side edge of the substrate 20 as the center, and the fourth locking piece of the connecting member 14 is connected. The 64s face each other inward, and the third engaging portion 26 of the lining member 12 is sandwiched by the fourth engaging portion 56 of the connecting member 14. Therefore, in addition to the engagement between the first engaging portion 24 and the second engaging portion 54, the lining member 12 also receives the engagement between the third engaging portion 26 and the fourth engaging portion 56. A force acts in the direction in which the side edges of the adjacent substrates 20 approach each other. Therefore, the side edges of the base 20 of the lining member 12 can be fixed in a more appropriately adhered state.

また、上述のように、第１係合部２４と第２係合部５４との係合、および第３係合部２６と第４係合部５６との係合を含む２重の係合によって、ライニング部材１２の側縁部どうしを連結するので、この連結部分においては引張方向（ライニング部材１２が互いに離れる方向）に対する抵抗力が大きくなる。このため、地震時などにおいて螺旋管１０２に軸方向変位が作用した場合でも、連結部分（第１嵌合部２２および第２嵌合部５２）の変形を抑えられ、止水部６６による止水機能を確保できる。また、２重の係合によって連結強度を確保するので、連結強度を大きくするために第１係合部２４、第２係合部５４、第３係合部２６および第４係合部５６の肉厚を大きくする必要がなく、他の部分と肉厚を均等にできる、すなわち部材全体を均一な肉厚にできるため成形し易い。 Further, as described above, the double engagement including the engagement between the first engaging portion 24 and the second engaging portion 54 and the engagement between the third engaging portion 26 and the fourth engaging portion 56. As a result, the side edge portions of the lining member 12 are connected to each other, so that the resistance force in the tensile direction (the direction in which the lining members 12 are separated from each other) increases at this connecting portion. Therefore, even when an axial displacement acts on the spiral pipe 102 at the time of an earthquake or the like, deformation of the connecting portion (first fitting portion 22 and second fitting portion 52) can be suppressed, and the water stop portion 66 stops water. The function can be secured. Further, since the connecting strength is secured by double engagement, the first engaging portion 24, the second engaging portion 54, the third engaging portion 26, and the fourth engaging portion 56 are used to increase the connecting strength. It is not necessary to increase the wall thickness, and the wall thickness can be made equal to that of other parts, that is, the entire member can have a uniform wall thickness, so that it is easy to mold.

さらに、第１係合部２４の第１突条２８の他方側面２８ｂが傾斜面になっていることから、連結部材１４によってライニング部材１２の側縁部どうしを連結した状態においては、第１突条２８の他方側面２８ｂ側に空隙８０が形成される。第１係合部２４と第２係合部５４とを係合させるときには、主として、ポリエチレン製の第１係合部２４が他方側面２８ｂ側に弾性変形して傾動するが、空隙８０があることによって第１係合部２４の倒れ代が確保される。したがって、第１係合部２４と第２係合部５４との係合に要する力（押込み力）を低減でき、ライニング部材１２に対して連結部材１４を取り付け易くなる。 Further, since the other side surface 28b of the first protrusion 28 of the first engaging portion 24 is an inclined surface, the first protrusion is in a state where the side edge portions of the lining member 12 are connected to each other by the connecting member 14. A gap 80 is formed on the other side surface 28b side of the strip 28. When the first engaging portion 24 and the second engaging portion 54 are engaged with each other, the first engaging portion 24 made of polyethylene is elastically deformed and tilted toward the other side surface 28b, but there is a gap 80. As a result, the fall allowance of the first engaging portion 24 is secured. Therefore, the force (pushing force) required for engaging the first engaging portion 24 and the second engaging portion 54 can be reduced, and the connecting member 14 can be easily attached to the lining member 12.

同様に、連結部材１４によってライニング部材１２の側縁部どうしを連結した状態においては、第３突条３２の他方側面３２ｂ側に空隙８２が形成される。第３係合部２６と第４係合部５６とを係合させるときには、主として第３係合部２６が他方側面３２ｂ側に弾性変形して傾動するが、空隙８２があることによって第３係合部２６の倒れ代が確保される。したがって、第３係合部２６と第４係合部５６との係合に要する力を低減でき、ライニング部材１２に対して連結部材１４を取り付け易くなる。 Similarly, in a state where the side edges of the lining member 12 are connected to each other by the connecting member 14, a gap 82 is formed on the other side surface 32b side of the third ridge 32. When the third engaging portion 26 and the fourth engaging portion 56 are engaged with each other, the third engaging portion 26 is mainly elastically deformed and tilted toward the other side surface 32b, but due to the presence of the gap 82, the third engaging portion 26 is engaged. The fall allowance of the joint part 26 is secured. Therefore, the force required for engaging the third engaging portion 26 and the fourth engaging portion 56 can be reduced, and the connecting member 14 can be easily attached to the lining member 12.

さらにまた、連結部材１４によってライニング部材１２の側縁部どうしを連結した状態において、連結部材１４の基体５０に形成した突条６８の先端は、螺旋管１０２の径方向におけるライニング部材１２の最外部（この実施例では変位吸収部３６の連結部４０の外面）よりも外側に位置する。したがって、螺旋管１０２を既設管１００内に送り込むときには、突条６８が既設管１００の内面と摺接し、ライニング部材１２は既設管１００の内面と摺接しない（または摺接し難い）ので、連結部材１４によってライニング部材１２を適切に保護できる。また、連結部材１４の基体５０の他方主面５０ｂに突条６８を形成することで、螺旋管１０２を既設管１００内に送り込むときには、既設管１００の内面と螺旋管１０２の外面との接触面積が減少する。これにより、螺旋管１０２の挿入抵抗を低減できると共に、既設管１００との摺接による螺旋管１０２の損傷を低減できる。なお、この実施例では、連結部材１４を強度の大きい硬質塩化ビニル樹脂によって形成しているので、ライニング部材１２の保護効果および螺旋管１０２の損傷低減効果がより適切に発揮される。 Furthermore, in a state where the side edges of the lining member 12 are connected to each other by the connecting member 14, the tip of the ridge 68 formed on the base 50 of the connecting member 14 is the outermost part of the lining member 12 in the radial direction of the spiral tube 102. (In this embodiment, it is located outside the outer surface of the connecting portion 40 of the displacement absorbing portion 36). Therefore, when the spiral pipe 102 is sent into the existing pipe 100, the ridge 68 is in sliding contact with the inner surface of the existing pipe 100, and the lining member 12 is not in sliding contact with the inner surface of the existing pipe 100 (or is difficult to be in sliding contact). The lining member 12 can be appropriately protected by 14. Further, by forming the ridge 68 on the other main surface 50b of the base 50 of the connecting member 14, when the spiral pipe 102 is sent into the existing pipe 100, the contact area between the inner surface of the existing pipe 100 and the outer surface of the spiral pipe 102. Decreases. As a result, the insertion resistance of the spiral pipe 102 can be reduced, and damage to the spiral pipe 102 due to sliding contact with the existing pipe 100 can be reduced. In this embodiment, since the connecting member 14 is made of a hard vinyl chloride resin having high strength, the protective effect of the lining member 12 and the damage reducing effect of the spiral tube 102 are more appropriately exhibited.

また、この実施例では、連結部材１４の基体５０の他方主面５０ｂも、連結部材１４によってライニング部材１２の側縁部どうしを連結した状態において、螺旋管１０２の径方向におけるライニング部材１２の最外部よりも外側に位置する。したがって、螺旋管１０２を既設管１００内に送り込むときには、連結部材１４によってライニング部材１２をより確実に保護できる。 Further, in this embodiment, the other main surface 50b of the base 50 of the connecting member 14 is also the most of the lining member 12 in the radial direction of the spiral tube 102 in a state where the side edges of the lining member 12 are connected to each other by the connecting member 14. It is located outside the outside. Therefore, when the spiral pipe 102 is sent into the existing pipe 100, the lining member 12 can be more reliably protected by the connecting member 14.

続いて、図１および図９を参照して、上述のような管更生部材１０を用いて既設管１００を更生する管路更生工法の一例について具体的に説明する。この実施例では、発進側マンホール１１０から到達側マンホール１１２までの間の既設管１００を更生するものとする。 Subsequently, with reference to FIGS. 1 and 9, an example of a pipeline rehabilitation method for rehabilitating the existing pipe 100 using the pipe rehabilitation member 10 as described above will be specifically described. In this embodiment, the existing pipe 100 between the starting manhole 110 and the reaching manhole 112 is rehabilitated.

既設管１００を更生するときには、先ず、発進側マンホール１１０内に製管機１１４を設置すると共に、発進側マンホール１１０の近傍の地上にライニング部材１２および連結部材１４を含む管更生部材１０を設置する。ライニング部材１２および連結部材１４は、それぞれ個別にロール状に巻き取ったものを用意して設置するとよい。なお、既設管１００内は、高圧洗浄機などを用いて予め洗浄しておく。 When rehabilitating the existing pipe 100, first, the pipe making machine 114 is installed in the starting manhole 110, and the pipe rehabilitation member 10 including the lining member 12 and the connecting member 14 is installed on the ground near the starting manhole 110. .. The lining member 12 and the connecting member 14 may be individually wound into rolls and installed. The inside of the existing pipe 100 is cleaned in advance using a high pressure washer or the like.

次に、図１に示すように、既設管１００内に螺旋管１０２を施工する。すなわち、ライニング部材１２および連結部材１４を地上から発進側マンホール１１０内に設置した製管機１１４に供給し、この製管機１１４を用いて形成した螺旋管１０２を発進側マンホール１１０内から既設管１００内に順次送り込んでいく。製管機１１４においては、ライニング部材１２の基体２０の側縁どうしを突き合わせるようにしてライニング部材１２を螺旋状に巻き回すと共に、ライニング部材１２の外面側から連結部材１４を取り付けてライニング部材１２の隣り合う側縁部どうしを連結することで、螺旋管１０２が製管される。 Next, as shown in FIG. 1, the spiral pipe 102 is constructed in the existing pipe 100. That is, the lining member 12 and the connecting member 14 are supplied from the ground to the pipe making machine 114 installed in the starting side manhole 110, and the spiral pipe 102 formed by using the pipe making machine 114 is an existing pipe from the starting side manhole 110. It is sent in order within 100. In the pipe making machine 114, the lining member 12 is spirally wound so that the side edges of the base 20 of the lining member 12 are abutted against each other, and the connecting member 14 is attached from the outer surface side of the lining member 12 to the lining member 12. By connecting the adjacent side edges of the spiral tube 102, the spiral tube 102 is manufactured.

ここで、ライニング部材１２を螺旋状に巻き回して製管する際には、ライニング部材１２の基体２０の側縁どうしを突き合わせた状態にするので、ライニング部材１２の位置決めが容易となり、製管し易い。また、ライニング部材１２が基体２０の他方主面２０ｂ側（外面側）に連結部材１４との嵌合部を備えており、螺旋状に巻き回したライニング部材１２の外面側から連結部材１４を取り付け可能である。このため、ライニング部材の内面側から連結部材を取り付ける管更生部材では製管作業が困難となる３００ｍｍ以上１０００ｍｍ以下の中口径の既設管１００に対応する大きさ（つまり比較的小さい口径）の螺旋管１０２であっても、製管し易い。また、ライニング部材１２および連結部材１４の２つの部材を用いて螺旋管１０２を形成するので、ライニング部材１２を周回させて位置決めした後、連結部材１４によってライニング部材１２の側縁部どうしを連結固定することができる。したがって、螺旋管１０２を形成する際に、隣り合うライニング部材１２の周長（口径）を合わせ易く、軸方向の全長に亘って口径が一様な螺旋管１０２を形成できる。 Here, when the lining member 12 is spirally wound to form a pipe, the side edges of the base 20 of the lining member 12 are brought into contact with each other, so that the lining member 12 can be easily positioned and the pipe is manufactured. easy. Further, the lining member 12 is provided with a fitting portion with the connecting member 14 on the other main surface 20b side (outer surface side) of the substrate 20, and the connecting member 14 is attached from the outer surface side of the spirally wound lining member 12. It is possible. For this reason, a spiral pipe having a size (that is, a relatively small diameter) corresponding to an existing pipe 100 having a medium diameter of 300 mm or more and 1000 mm or less, which makes pipe manufacturing work difficult with a pipe rehabilitation member to which a connecting member is attached from the inner surface side of the lining member. Even if it is 102, it is easy to make a pipe. Further, since the spiral pipe 102 is formed by using the lining member 12 and the connecting member 14, the side edges of the lining member 12 are connected and fixed by the connecting member 14 after the lining member 12 is rotated and positioned. can do. Therefore, when forming the spiral tube 102, it is easy to match the peripheral lengths (diameters) of the adjacent lining members 12, and the spiral tube 102 having a uniform diameter over the entire length in the axial direction can be formed.

製管機１１４において製管された螺旋管１０２は、製管された部分から順に製管機１１４から押し出されて、回転しながら到達側マンホール１１２に向かって既設管１００内に送り込まれる。この際、螺旋管１０２の外面側に連結部材１４が配置され、この連結部材１４の基体５０の他方主面５０ｂに突条６８が形成されていることから、既設管１００の内面と螺旋管１０２の外面との接触面積が減少する。これにより、螺旋管１０２の挿入抵抗を低減でき、既設管１００との摺接による螺旋管１０２の損傷も低減できる。したがって、既設管１００内に螺旋管１０２を適切に送り込むことができる。また、突条６８の先端がライニング部材１２の最外部よりも外側に位置するので、連結部材１４によってライニング部材１２を適切に保護できる。 The spiral pipe 102 made in the pipe making machine 114 is extruded from the pipe making machine 114 in order from the pipe-made portion, and is fed into the existing pipe 100 toward the reaching side manhole 112 while rotating. At this time, since the connecting member 14 is arranged on the outer surface side of the spiral pipe 102 and the ridge 68 is formed on the other main surface 50b of the base 50 of the connecting member 14, the inner surface of the existing pipe 100 and the spiral pipe 102 The contact area with the outer surface of the is reduced. As a result, the insertion resistance of the spiral pipe 102 can be reduced, and damage to the spiral pipe 102 due to sliding contact with the existing pipe 100 can also be reduced. Therefore, the spiral pipe 102 can be appropriately fed into the existing pipe 100. Further, since the tip of the ridge 68 is located outside the outermost part of the lining member 12, the lining member 12 can be appropriately protected by the connecting member 14.

既設管１００の更生区間の全長に亘って螺旋管１０２を施工すると、続いて、既設管１００の内面と螺旋管１０２の外面との間に充填材１０４を注入する。充填材１０４が固化することで、図９に示すような、既設管１００と螺旋管１０２とが一体化した更生管（複合管）１０６が形成される。その後、片付け作業などを適宜実施することによって、既設管１００の更生作業が終了する。 When the spiral pipe 102 is constructed over the entire length of the rehabilitation section of the existing pipe 100, the filler 104 is subsequently injected between the inner surface of the existing pipe 100 and the outer surface of the spiral pipe 102. When the filler 104 is solidified, a rehabilitation pipe (composite pipe) 106 in which the existing pipe 100 and the spiral pipe 102 are integrated is formed as shown in FIG. After that, the rehabilitation work of the existing pipe 100 is completed by appropriately carrying out the tidying up work and the like.

更生管１０６を形成する際には、連結部材１４の側面突条７０およびライニング部材１２の変位吸収部３６がアンカ効果を発揮するので、充填材１０４から螺旋管１０２が外れ難くなり、螺旋管１０２と充填材１０４との固定強度が向上する。したがって、充填材１０４によって既設管１００と螺旋管１０２とを強固に一体化することができる。 When forming the rehabilitation pipe 106, the side ridge 70 of the connecting member 14 and the displacement absorbing portion 36 of the lining member 12 exert an anchor effect, so that the spiral pipe 102 is hard to come off from the filler 104, and the spiral pipe 102 The fixing strength between the filler and the filler 104 is improved. Therefore, the existing pipe 100 and the spiral pipe 102 can be firmly integrated by the filler 104.

以上のように、この実施例によれば、螺旋管１０２の外面側に連結部材１４を配置し、その連結部材１４が備える基体５０の他方主面５０ｂに突条を形成したので、螺旋管１０２を既設管１００内に送り込むときに、既設管１００の内面と螺旋管１０２の外面との接触面積が減少する。これにより、螺旋管１０２の挿入抵抗を低減できると共に、既設管１００との摺接による螺旋管１０２の損傷を低減できる。したがって、発進側マンホール１１０内で製管した螺旋管１０２を既設管１００内に適切に送り込むことができる。 As described above, according to this embodiment, the connecting member 14 is arranged on the outer surface side of the spiral tube 102, and a ridge is formed on the other main surface 50b of the base 50 included in the connecting member 14, so that the spiral tube 102 The contact area between the inner surface of the existing pipe 100 and the outer surface of the spiral pipe 102 is reduced when the pipe is fed into the existing pipe 100. As a result, the insertion resistance of the spiral pipe 102 can be reduced, and damage to the spiral pipe 102 due to sliding contact with the existing pipe 100 can be reduced. Therefore, the spiral pipe 102 produced in the starting manhole 110 can be appropriately fed into the existing pipe 100.

また、突条６８の先端がライニング部材１２の最外部よりも外側に位置するので、連結部材１４によってライニング部材１２を適切に保護できる。また、基体５０の他方主面５０ｂがライニング部材１２の最外部よりも外側に位置するので、連結部材１４によってライニング部材１２をより確実に保護できる。 Further, since the tip of the ridge 68 is located outside the outermost part of the lining member 12, the lining member 12 can be appropriately protected by the connecting member 14. Further, since the other main surface 50b of the substrate 50 is located outside the outermost surface of the lining member 12, the lining member 12 can be more reliably protected by the connecting member 14.

さらに、ライニング部材１２が柔軟性を有するポリエチレン樹脂（ポリオレフィン樹脂）によって形成されるので、ライニング部材１２を螺旋状に巻き回し易く、中口径の既設管１００に対応する大きさの螺旋管１０２を適切に形成できる。また、連結部材１４が強度の大きい硬質塩化ビニル樹脂によって形成されるので、螺旋管１０２全体の剛性を向上させることができると共に、ライニング部材１２の保護効果および螺旋管１０２の損傷低減効果がより適切に発揮される。 Further, since the lining member 12 is formed of a flexible polyethylene resin (polyolefin resin), the lining member 12 can be easily wound in a spiral shape, and a spiral pipe 102 having a size corresponding to the existing medium-diameter pipe 100 is suitable. Can be formed into. Further, since the connecting member 14 is formed of a hard vinyl chloride resin having high strength, the rigidity of the entire spiral tube 102 can be improved, and the protective effect of the lining member 12 and the damage reducing effect of the spiral tube 102 are more appropriate. It is demonstrated in.

なお、上述した管更生部材１０（ライニング部材１２および連結部材１４）の具体的な構成ないし形状は、ライニング部材１２の外面側から連結部材１４を取り付け可能な態様であればよく、適宜変更可能である。 The specific configuration or shape of the pipe rehabilitation member 10 (lining member 12 and connecting member 14) described above may be appropriately changed as long as the connecting member 14 can be attached from the outer surface side of the lining member 12. is there.

たとえば、上述の実施例では、ライニング部材１２は、連結部材１４との嵌合部（第１嵌合部２２）として、２つの係合部（第１係合部２４および第３係合部２６）を有するが、係合部は１つであっても構わない。同様に、連結部材１４は、ライニング部材１２との嵌合部（第２嵌合部５２）として、２つの係合部（第２係合部５４および第４係合部５６）を有するが、係合部は１つであっても構わない。また、ライニング部材１２および連結部材１４に形成する嵌合部のうち、一方の嵌合部を溝状に形成し、他方の嵌合部をそれに嵌め込まれる突条状に形成することもできる。 For example, in the above embodiment, the lining member 12 has two engaging portions (first engaging portion 24 and third engaging portion 26) as a fitting portion (first fitting portion 22) with the connecting member 14. ), But there may be one engaging portion. Similarly, the connecting member 14 has two engaging portions (second engaging portion 54 and fourth engaging portion 56) as fitting portions (second fitting portion 52) with the lining member 12. There may be one engaging portion. Further, of the fitting portions formed on the lining member 12 and the connecting member 14, one fitting portion may be formed in a groove shape, and the other fitting portion may be formed in a ridge shape to be fitted therein.

また、上述の実施例では、連結部材１４は、基体５０の両側部に形成される２つの突条６８を有するが、突条６８は、１つまたは３つ以上でも構わない。たとえば、１つの突条６８を設けるのであれば、基体５０の他方主面５０ｂの幅方向中央部に設ければよく、３つの突条６８を設けるのであれば、基体５０の他方主面５０ｂの幅方向中央部および両側部に設ければよい。 Further, in the above-described embodiment, the connecting member 14 has two ridges 68 formed on both sides of the substrate 50, but the number of ridges 68 may be one or three or more. For example, if one ridge 68 is provided, it may be provided at the center of the other main surface 50b of the base 50 in the width direction, and if three ridges 68 are provided, the other main surface 50b of the base 50 may be provided. It may be provided at the central portion and both side portions in the width direction.

さらに、上述の実施例では、ライニング部材１２の変位吸収部３６の基端部間に隙間４２を形成するようにしたが、この隙間４２は、必ずしも形成される必要はない。また、隙間４２を覆うように基体２０の一方主面２０ａどうしを連結する薄膜部を一体成形するようにしてもよいし、後付けで薄膜部を貼り付ける等して設けるようにしてもよい。 Further, in the above-described embodiment, a gap 42 is formed between the base ends of the displacement absorbing portion 36 of the lining member 12, but the gap 42 does not necessarily have to be formed. Further, the thin film portion connecting the one main surfaces 20a of the substrate 20 may be integrally formed so as to cover the gap 42, or the thin film portion may be attached by attaching the thin film portion afterwards.

さらにまた、上述の実施例では設けていないが、ライニング部材１２の外面側（他方主面２０ｂ側）には、剛性を高めるための補強部材を取り付けておくこともできる。 Furthermore, although not provided in the above-described embodiment, a reinforcing member for increasing the rigidity can be attached to the outer surface side (the other main surface 20b side) of the lining member 12.

また、上述の実施例では、螺旋管１０２を回転させながら既設管１００内に送り込む元押し式の管路更生工法に管更生部材１０を用いたが、これに限定されない。管更生部材１０は、発進側マンホール１１０内で製管した螺旋管１０２を到達側マンホール１１２側からウィンチ等で引っ張ることで、螺旋管１０２を回転させることなく既設管１００内に送り込む牽引式の管路更生工法に用いることもできる。 Further, in the above-described embodiment, the pipe rehabilitation member 10 is used in the push-type pipeline rehabilitation method of feeding the spiral pipe 102 into the existing pipe 100 while rotating the spiral pipe 102, but the present invention is not limited to this. The pipe rehabilitation member 10 is a traction type pipe that feeds the spiral pipe 102 made in the starting side manhole 110 into the existing pipe 100 without rotating the spiral pipe 102 by pulling the spiral pipe 102 from the reaching side manhole 112 side with a winch or the like. It can also be used for road rehabilitation methods.

さらに、上述の実施例では、充填材１０４によって既設管１００と螺旋管１０２とが一体化した複合管（更生管１０６）を形成するようにしたが、これに限定されない。管更生部材１０は、既設管１００から独立して強度を保持する自立管を形成することもできる。 Further, in the above-described embodiment, the filler 104 forms a composite pipe (rehabilitation pipe 106) in which the existing pipe 100 and the spiral pipe 102 are integrated, but the present invention is not limited to this. The pipe rehabilitation member 10 can also form a self-supporting pipe that retains its strength independently of the existing pipe 100.

なお、上で挙げた寸法などの具体的数値はいずれも単なる一例であり、製品の仕様などの必要に応じて適宜変更可能である。 The specific numerical values such as the dimensions mentioned above are merely examples, and can be changed as appropriate according to the needs of the product specifications and the like.

１０ …管更生部材
１２ …ライニング部材
１４ …連結部材
２０ …ライニング部材の基体（ライニング基体）
２２ …第１嵌合部
５０ …連結部材の基体（連結基体）
５２ …第２嵌合部
６８ …突条
７０ …側面突条
１００ …既設管
１０２ …螺旋管
１０４ …充填材
１０６ …更生管 10 ... Pipe rehabilitation member 12 ... Lining member 14 ... Connecting member 20 ... Lining member base (lining base)
22 ... First fitting portion 50 ... Base of connecting member (connecting base)
52 ... 2nd fitting part 68 ... ridge 70 ... side ridge 100 ... existing pipe 102 ... spiral pipe 104 ... filler 106 ... rehabilitation pipe

Claims

A pipe rehabilitation member used in a pipeline rehabilitation method in which a lining member is spirally wound in a manhole to form a spiral pipe while the spiral pipe is sent into an existing pipe.
The lining member and a connecting member attached from the outer surface side of the spirally wound lining member to connect adjacent side edges of the lining member are included.
The lining member is
A strip-shaped lining substrate having one main surface constituting the inner surface of the spiral tube, and first fitting portions formed on both side portions of the other main surface of the lining substrate are provided.
The connecting member
Strip-shaped connecting substrate,
A second fitting portion formed on one main surface of the connecting substrate and fitted with the first fitting portion, and a ridge formed on the other main surface of the connecting substrate and extending in the longitudinal direction of the connecting substrate. A pipe rehabilitation member to be provided.

The tip of the ridge is outside the outermost part of the lining member in the radial direction of the spiral tube in a state where adjacent side edges of the lining member are connected to each other by the connecting member to form the spiral tube. The pipe rehabilitation member according to claim 1, which is located in.

The other main surface of the connecting substrate is formed from the outermost side of the lining member in the radial direction of the spiral tube in a state where adjacent side edges of the lining member are connected to each other by the connecting member to form the spiral tube. The tube rehabilitation member according to claim 1 or 2, which is also located on the outside.

The pipe rehabilitation member according to any one of claims 1 to 3, wherein the ridges are formed on both side portions of the other main surface of the connecting substrate.

The pipe rehabilitation member according to any one of claims 1 to 4, further comprising a side protrusion formed on the outer surface in the width direction of the connecting member.