JP7372631B2

JP7372631B2 - lining material

Info

Publication number: JP7372631B2
Application number: JP2019231985A
Authority: JP
Inventors: 伸一谷川; 良一郎中村; 晃介鈴木; 裕久谷室; 良平桔川; 太一宇賀
Original assignee: 株式会社クボタケミックス; 株式会社大阪防水建設社
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2023-11-01
Anticipated expiration: 2039-12-23
Also published as: JP2021098338A

Description

この発明は、螺旋状に巻き回され、隣り合う側縁部どうしが連結されることによって螺旋管を形成する、ライニング部材に関する。 The present invention relates to a lining member that is spirally wound and forms a spiral tube by connecting adjacent side edges.

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の管更生部材は、ライニング部材（帯板部材）と連結部材（接続部材）とで構成されており、ライニング部材を螺旋状に巻き回し、螺旋状に巻き回したライニング部材の隣り合う側縁部どうしを連結部材によって連結することで螺旋管（ライニング管）を形成する。特許文献１の技術では、連結部材が溝部とフレキシブル部とによって構成される伸長可能部を有しており、地震等によって大きな力が螺旋管に作用すると、連結部材の溝部が破断すると共に、フレキシブル部が大きく伸長することで螺旋管の軸方向変位を吸収して、螺旋管の水密性を保つ。 An example of a conventional pipe rehabilitation member is disclosed in Patent Document 1. The pipe rehabilitation member of Patent Document 1 is composed of a lining member (strip plate member) and a connecting member (connecting member), and the lining member is spirally wound, and the spirally wound lining members are connected to each other. A spiral tube (lining tube) is formed by connecting the side edges with a connecting member. In the technology disclosed in Patent Document 1, the connecting member has an extensible portion composed of a groove and a flexible portion, and when a large force is applied to the helical tube due to an earthquake or the like, the groove of the connecting member breaks and the flexible portion breaks. The large elongation absorbs the axial displacement of the spiral tube and maintains the watertightness of the spiral tube.

特許第６５５９９２０号公報Patent No. 6559920

地震時などにおいて螺旋管の伸張を可能とする部分（変位吸収部）を螺旋管の主構成要素であるライニング部材自体に設けることが考えられる。この際、特許文献１の連結部材が備える伸長可能部（溝部およびフレキシブル部）をライニング部材にそのまま設けることも可能である。 It is conceivable to provide a portion (displacement absorbing portion) that allows the spiral tube to expand during an earthquake or the like in the lining member itself, which is the main component of the spiral tube. At this time, it is also possible to provide the extensible portion (groove portion and flexible portion) of the connecting member of Patent Document 1 as is on the lining member.

しかしながら、ライニング部材に設ける変位吸収部としては、高さ方向（螺旋管の径方向）の大きさを抑制したものが望まれる。 However, it is desired that the displacement absorbing portion provided in the lining member be suppressed in size in the height direction (radial direction of the spiral tube).

それゆえに、この発明の主たる目的は、新規な、ライニング部材を提供することである。 Therefore, the main object of this invention is to provide a new lining member.

この発明の他の目的は、変位吸収部の高さ方向の大きさを抑制しつつ、地震時などにおいて螺旋管の軸方向変位を適切に吸収できる、ライニング部材を提供することである。 Another object of the present invention is to provide a lining member that can appropriately absorb axial displacement of a helical tube during an earthquake or the like while suppressing the size of the displacement absorbing portion in the height direction.

第１の発明は、螺旋状に巻き回され、隣り合う側縁部どうしが連結部材を用いて連結されることによって螺旋管を形成するライニング部材であって、螺旋管の内面を構成する一方主面を有する帯板状の基体、基体の他方主面の両側部のそれぞれに形成され、連結部材に形成された第２嵌合部が螺旋管の外面側から嵌め合わされる第１嵌合部、および基体の一部を当該基体の他方主面側に突出するように幅方向に弛ませて形成した変位吸収部を備え、変位吸収部は、幅方向両側部のそれぞれに形成される屈曲部と、屈曲部どうしを連結する当該屈曲部よりも曲率の小さい連結部とを有する、ライニング部材である。 The first invention is a lining member that is wound spirally and forms a spiral tube by connecting adjacent side edges to each other using a connecting member , the lining member forming the inner surface of the spiral tube; a band-like base body having a surface, a first fitting part formed on each of both sides of the other main surface of the base body, into which a second fitting part formed in the connecting member is fitted from the outer surface side of the spiral tube; and a displacement absorbing part formed by loosening a part of the base body in the width direction so as to protrude toward the other main surface side of the base body, and the displacement absorbing part includes bent parts formed on each of both sides in the width direction. , and a connecting portion having a smaller curvature than the bent portions that connect the bent portions.

第１の発明では、ライニング部材は、螺旋状に巻き回されると共に、隣り合う側縁部どうしが連結部材を用いて連結されることによって、既設管を更生するための螺旋管を形成する。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基体と、基体の他方主面の両側部のそれぞれに形成され、連結部材に形成された第２嵌合部が螺旋管の外面側から嵌め合わされる第１嵌合部と、基体の一部を基体の他方主面側に突出するように幅方向に弛ませて形成した変位吸収部とを備える。変位吸収部は、幅方向両側部のそれぞれに形成される屈曲部と、変位吸収部の突出方向における先端部において屈曲部どうしを連結する連結部とを有する。この連結部は、屈曲部の曲率よりも小さい曲率を有する。 In the first invention, the lining member is wound in a spiral shape, and adjacent side edges are connected to each other using a connecting member , thereby forming a spiral pipe for rehabilitating an existing pipe. The lining member is formed on a strip-shaped base having one main surface constituting the inner surface of the helical tube, and on both sides of the other main surface of the base, and has a second fitting portion formed on the connecting member that has a helical shape. The first fitting part is fitted from the outer surface side of the tube, and the displacement absorbing part is formed by loosening a part of the base body in the width direction so as to protrude toward the other main surface side of the base body. The displacement absorbing portion includes bent portions formed on both sides in the width direction, and a connecting portion that connects the bent portions at the distal end portion in the projecting direction of the displacement absorbing portion. This connecting portion has a curvature smaller than the curvature of the bent portion.

第１の発明によれば、変位吸収部は、その幅方向両側部に形成される２つの屈曲部と屈曲部よりも曲率が小さい連結部とを有する。これにより、変位吸収部の高さ方向の大きさを抑制しつつ、変位吸収部の伸長可能幅を大きくすることができ、地震時などにおいて螺旋管の軸方向変位を適切に吸収できる。 According to the first invention, the displacement absorbing portion has two bent portions formed on both sides in the width direction and a connecting portion having a smaller curvature than the bent portions. Thereby, it is possible to increase the extensible width of the displacement absorbing portion while suppressing the size of the displacement absorbing portion in the height direction, and it is possible to appropriately absorb the axial displacement of the helical tube during an earthquake or the like.

また、基体の一部を弛ませて変位吸収部を形成するので、押出成形によってライニング部材全体を単一材料で容易に成形することができる。したがって、変位吸収部を有するライニング部材を容易に製造できる。 Furthermore, since the displacement absorbing portion is formed by loosening a portion of the base, the entire lining member can be easily molded from a single material by extrusion molding. Therefore, a lining member having a displacement absorbing portion can be easily manufactured.

第２の発明は、第１の発明に従属し、連結部の内面が平坦である。これにより、変位吸収部の高さ方向の大きさをより適切に抑制しつつ、変位吸収部の伸長可能幅を大きくすることができる。 A second invention is dependent on the first invention, and the inner surface of the connecting portion is flat. Thereby, it is possible to increase the extensible width of the displacement absorbing portion while more appropriately suppressing the size of the displacement absorbing portion in the height direction.

第３の発明は、第１または第２の発明に従属し、変位吸収部の基端部間に隙間が形成されている。これにより、変位吸収部が幅方向（螺旋管の軸方向）に縮むことも可能となる。
第４の発明は、第１から第３の発明のいずれかに従属し、ライニング部材は、マンホール内で螺旋管を形成しながら、形成した螺旋管を既設管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。 A third invention is dependent on the first or second invention, and a gap is formed between the base end portions of the displacement absorbing portions. This also allows the displacement absorbing portion to shrink in the width direction (axial direction of the helical tube).
A fourth invention is dependent on any one of the first to third inventions, and the lining member is a push-type type that sequentially feeds the formed spiral pipe into the existing pipe while forming the spiral pipe within the manhole. Used in pipeline rehabilitation methods.

この発明によれば、変位吸収部は、その幅方向両側部に形成される２つの屈曲部と屈曲部よりも曲率が小さい連結部とを有する。これにより、変位吸収部の高さ方向の大きさを抑制しつつ、変位吸収部の伸長可能幅を大きくすることができ、地震時などにおいて螺旋管の軸方向変位を適切に吸収できる。 According to this invention, the displacement absorbing portion has two bent portions formed on both sides in the width direction and a connecting portion having a smaller curvature than the bent portions. Thereby, it is possible to increase the extensible width of the displacement absorbing portion while suppressing the size of the displacement absorbing portion in the height direction, and it is possible to appropriately absorb the axial displacement of the helical tube during an earthquake or the like.

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 objects, other objects, features and advantages of the present invention will become more apparent from the detailed description of the embodiments given below with reference to the drawings.

この発明の一実施例であるライニング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。FIG. 1 is an illustrative view schematically showing how an existing pipe is rehabilitated using a lining member according to an embodiment of the present invention. 図１のライニング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。2 is an illustrative view showing how a spiral tube is formed using the lining member of FIG. 1. FIG. 図１のライニング部材を示す斜視図である。FIG. 2 is a perspective view showing the lining member of FIG. 1; 図１のライニング部材を示す断面図である。2 is a sectional view showing the lining member of FIG. 1. FIG. 図１のライニング部材の側縁部どうしを連結するための連結部材を示す斜視図である。FIG. 2 is a perspective view showing a connecting member for connecting side edges of the lining member of FIG. 1; 図５の連結部材を示す断面図である。FIG. 6 is a sectional view showing the connecting member of FIG. 5; 連結部材を用いて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. 3 is a cross-sectional view showing how the side edges of the lining member are connected to each other using a connecting member. のライニング部材と連結部材との連結部分を示す断面図である。FIG. 3 is a sectional view showing a connecting portion between the lining member and the connecting member. 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. 2 is a cross-sectional view showing how an existing pipe is rehabilitated with a spiral pipe formed using a pipe rehabilitation member. 地震時などにライニング材の変位吸収部が伸長したときの様子を模式的に示す断面図である。FIG. 3 is a cross-sectional view schematically showing how the displacement absorbing portion of the lining material expands during an earthquake or the like.

図１を参照して、この発明の一実施例であるライニング部材１２は、連結部材１４と共に管更生部材１０を構成する部材であって、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。 Referring to FIG. 1, a lining member 12, which is an embodiment of the present invention, is a member that constitutes a pipe rehabilitation member 10 together with a connecting member 14, and the lining member 12 is wound spirally within a starting side manhole 110. It is used in a push-in type pipe rehabilitation method in which the spiral pipe (lining pipe) 102 is manufactured by rotating the pipe, and the manufactured spiral pipe 102 is sequentially fed into the existing pipe 100.

なお、ライニング部材１２を含む管更生部材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 including the lining member 12 can be used to rehabilitate various types of existing pipes 100 such as those made of reinforced concrete, synthetic resin, and metal. It is suitable for rehabilitation of sewer pipes having a medium diameter of 300 mm or more and 1000 mm or less, which is difficult to repair. However, the pipe rehabilitation member 10 can also be used for rehabilitation of an existing pipe 100 having a diameter exceeding 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 a spiral pipe 102, and includes a long strip-shaped lining member 12 and a spirally wound lining member 12 on adjacent sides. It includes a connecting member 14 in the form of a long strip 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 spirally, and the connecting member 14 is wound spirally. It is attached to the lining member 12 from the outer surface side of the wound lining member 12. Note that the outer diameter of the spiral pipe 102 formed using the pipe rehabilitation member 10 is set to be slightly smaller than the inner diameter of the existing pipe 100. The configurations of the lining member 12 and the connecting member 14 will be specifically described below.

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 an elongated member that is a main component of the spiral tube 102, and includes a strip-shaped base (lining base) 20. One main surface 20a of the base body 20 constitutes the inner surface of the spiral tube 102, and is a smooth surface. The width of the base body 20 is, for example, 75 mm, and the thickness (thickness) of the base body 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。 On each side of the other main surface 20b of the base body 20, that is, on both sides of the outer surface when the lining member 12 is spirally wound, there are first holes that are fitted with second fitting portions 52 of the connecting member 14, which will be described later. A fitting portion 22 is formed. The first fitting portion 22 includes a first engaging portion 24 formed on both side edges of the other main surface 20b of the base body 20, and a first engaging portion 24 formed on the inner side of the first engaging portion 24 in the width direction of the base body 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 a second engaging portion 54 of the connecting member 14, which will be described later. The first engaging portion 24 has a first protrusion 28 extending in the longitudinal direction of the base body 20. A first locking piece 30 is formed at the tip of one side surface 28a (inner surface in the width direction of the base body 20) of the first protrusion 28. Further, the other side surface 28b of the first protrusion 28 is an inclined surface that slopes inward in the width direction of the base body 20 as the distance from the base body 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 a fourth engaging portion 56 of the connecting member 14, which will be described later. This third engaging portion 26 has a third protrusion 32 extending in the longitudinal direction of the base body 20. A third locking piece 34 is formed at the tip of one side 32a (inner surface in the width direction of the base body 20) of the third protrusion 32. Further, at the tip of the other side surface 32b of the third protrusion 32, an inclined surface is formed that slopes inward in the width direction of the base body 20 as the distance from the base body 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、変位吸収部３６の突出方向における先端部（一方主面２０ａから離れた部分）において屈曲部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る。この実施例では、連結部４０の内面４０ａは平坦面となっており、連結部４０は平板状に形成される。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, a displacement absorbing portion 36 is formed in the center portion of the base body 20 in the width direction, in which a part of the base body 20 is loosened in the width direction so as to protrude toward the other main surface 20b side. The thickness of the displacement absorbing portion 36 is approximately the same as the thickness of the other portions of the base body 20. The displacement absorbing portion 36 is formed to swell in the width direction as it moves away from the main surface 20a, and has bent portions 38 formed on both sides in the width direction, and a tip portion ( On the other hand, it has a connecting portion 40 that connects the bent portions 38 to each other at a portion (a portion away from the main surface 20a). The connecting portion 40 is formed to have a smaller curvature than the bent portion 38. In this embodiment, the inner surface 40a of the connecting portion 40 is a flat surface, and the connecting portion 40 is formed into a flat plate shape. Further, a gap 42 is formed between the base end portions of the displacement absorbing portion 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が伸長して螺旋管１０２の軸方向変位を吸収する。 Since the base body 20 has the displacement absorbing portion 36 in this manner, the helical tube 102 formed using the lining member 12 is easily deformed in the axial direction and the bending direction in the portion of the displacement absorbing portion 36. Therefore, when the helical tube 102 is fed into the existing pipe 100 as described later, the displacement absorbing portion 36 is deformed so that the helical tube 102 can follow the bends, bends, and stepped portions of the existing pipe 100. . Furthermore, when an earthquake occurs after construction, the displacement absorbing portion 36 expands to absorb the axial displacement of the helical pipe 102.

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の先端部を一定の曲率で湾曲させることと比較して、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（破断することなく伸長できる幅）を大きくすることができる。また、連結部４０の内面４０ａを平坦面とする、つまり連結部４０を平板状に形成することで、変位吸収部３６の高さ方向の大きさをより適切に抑制しつつ、変位吸収部の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。 Furthermore, since the displacement absorbing portion 36 has the two bent portions 38 and the connecting portion 40 having a smaller curvature than the bent portions 38, compared to curving the distal end portion of the displacement absorbing portion 36 with a constant curvature, While suppressing the size of the displacement absorbing portion 36 in the height direction (radial direction of the helical tube 102), the extensible width (can be expanded without breaking) in the width direction (axial direction of the helical tube 102) of the displacement absorbing portion 36 is suppressed. width) can be increased. Further, by making the inner surface 40a of the connecting portion 40 a flat surface, that is, by forming the connecting portion 40 into a flat plate shape, the size of the displacement absorbing portion 36 in the height direction can be more appropriately suppressed, and the size of the displacement absorbing portion 36 can be suppressed more appropriately. The expandable width can be increased. Further, by providing the gap 42 between the base end portions of the displacement absorbing portion 36, the displacement absorbing portion 36 can also be shrunk in the width direction. Furthermore, since the displacement absorbing portion 36 is formed to expand in the width direction as it moves away from the main surface 20a, the outer surface of the displacement absorbing portion 36 in the width direction can also be used as an anchor 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。このように、基体２０の一部を弛ませて変位吸収部３６を形成することで、押出成形によってライニング部材１２全体を単一材料で容易に成形することができる。したがって、変位吸収部３６を有するライニング部材１２を容易に製造できる。 Such a lining member 12 is integrally molded, for example, by extrusion molding of synthetic resin such as polyethylene resin and hard vinyl chloride resin. The first fitting part 22 including the first engaging part 24 and the third engaging part 26 and the displacement absorbing part 36 are formed over the entire length of the base body 20 in the longitudinal direction. By forming the displacement absorbing portion 36 by loosening a portion of the base body 20 in this manner, the entire lining member 12 can be easily molded from a single material by extrusion molding. Therefore, the lining member 12 having the displacement absorbing portion 36 can be easily manufactured.

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。 At this time, the lining member 12 is preferably formed of polyolefin resin such as polyethylene resin and polypropylene resin. The lining member 12 in 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。さらにまた、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 from polyolefin resin such as polyethylene resin, it becomes possible to fusion-bond the ends of the lining member 12 in the longitudinal direction, and the strength and smoothness of this joint can be appropriately ensured. . Further, since polyolefin resin is flexible, the lining member 12 formed of polyolefin resin can be easily wound into a spiral shape. Therefore, it is possible to appropriately form the helical pipe 102 of 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. Further, the displacement absorbing portion 36 becomes easier to deform, and the spiral pipe 102 becomes easier to follow the displacement during construction, earthquakes, and the like. Furthermore, since polyolefin resin has excellent abrasion resistance and chemical resistance, by forming the lining member 12 that constitutes the inner surface of the helical tube 102 from a polyolefin resin, the abrasion resistance and resistance of the helical tube 102 can be improved. It also improves durability against chemicals, etc.

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. This connecting member 14 is a member that is attached from the outer surface side (the other main surface 20b side) of the lining member 12 as described above, and when the spiral tube 102 is formed 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 band-shaped base (connecting base) 50. The width of the base 50 is, for example, 30 mm, and the thickness of the base 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 facing the other main surface 20b of the base 20 of the lining member 12, and a first fitting of the lining member 12 is provided on each of both sides of the one main surface 50a of the base 50. A second fitting portion 52 that fits into the fitting portion 22 is formed. This second fitting part 52 includes a second engaging part 54 and a fourth engaging part 56. The fourth engaging portion 56 is formed on both side edges of one main surface 50a of the base body 50. The second engaging portion 54 is formed inside the fourth engaging portion 56 in the width direction of the base body 50 and spaced apart from the fourth engaging portion 56 by a predetermined distance.

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 protrusion 58 extending in the longitudinal direction of the base body 50. A second locking piece 60 that locks the first locking piece 30 of the lining member 12 is formed at the tip of one side 58a (inner side in the width direction of the base body 50) of the second protrusion 58. Ru. On the other hand, the fourth engaging portion 56 has a fourth protrusion 62 extending in the longitudinal direction of the base body 50. A fourth locking piece 64 that locks the third locking piece 34 of the lining member 12 is formed at the tip of one side 62a (inner side in the width direction of the base body 50) of the fourth protrusion 62. Ru.

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 base body 50, a water stop portion 66 formed in a band shape from an elastic body such as 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 together, this water stop portion 66 connects one principal surface 50a of the base 50 to the third portion of the lining member 12. By being sandwiched between the distal end portion of the engaging portion 26, it is sufficiently compressed (see FIG. 9). This ensures watertightness at the connecting portions of the side edges 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。 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 side of the other main surface 50b of the base 50 has a semicircular cross section extending in the longitudinal direction of the base 50. A protrusion 68 is formed. This protrusion 68 becomes a part 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.

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。 Furthermore, a side protrusion 70 having a rectangular cross section and extending in the longitudinal direction of the base body 50 is formed on each outer side surface in the width direction of the connecting member 14 (in this embodiment, the other side surface 62b of the fourth protrusion 62). This 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, for example, by extrusion molding of synthetic resin such as hard vinyl chloride resin and polyethylene resin. The second fitting portion 52 including the second engaging portion 54 and the fourth engaging portion 56, the protrusion 68, and the side protrusion 70 are formed over the entire length of the base body 50 in the longitudinal direction. At this time, the connecting member 14 is preferably formed of a synthetic resin such as hard vinyl chloride resin, which has greater strength than polyolefin resin. The connecting member 14 in this embodiment is made of hard vinyl chloride resin. Note that 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 from a hard vinyl chloride resin with high strength, the overall rigidity of the formed spiral tube 102 is improved compared to forming both the lining member 12 and the connecting member 14 from a polyolefin resin. can be done. Further, when the spiral pipe 102 is fed into the existing pipe 100 as described later, the lining member 12 can be appropriately protected by the connecting member 14. Furthermore, since the strength of the second fitting part 52 is increased, it becomes difficult for the first fitting part 22 and the second fitting part 52 to come loose from each other, and the side edges of the lining member 12 can be firmly connected to each other. . Therefore, deformation of this connecting part is suppressed in the event of an earthquake, etc., and the water stop function can be ensured. Furthermore, hard vinyl chloride resin has better moldability than polyolefin resins, makes it easier to obtain the dimensions of the connecting member 14, and allows the side edges of the lining member 12 to be reliably connected to each other. In addition, hard vinyl chloride resin has higher adhesion to water-stopping materials than polyolefin resins.

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 by the connecting member 14, one main surface 20a of the base body 20 of the lining member 12 is The side edges of the base body 20 are brought into contact with each other so that they are flush with each other. Then, by pushing the connecting member 14 from the outer surface side of the spirally wound lining member 12, the second fitting portion 52 of the connecting member 14 is inserted into the first fitting portion 22 of the lining member 12 in the longitudinal direction. Fit them in sequence. Then, the first locking piece 30 and the third locking piece 34 of the first fitting part 22 are respectively locked by the second locking piece 60 and the fourth locking piece 64 of the second fitting part 52. 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, when the side edges of the lining member 12 are connected to each other by the connecting member 14, that is, when the spiral tube 102 is formed, the side edges of the base body 20 of the lining member 12 are directly abutted against each other, and the connecting member 14 is not exposed on the inner surface side of the spiral tube 102. Therefore, the number of seams appearing on the inner surface of the helical tube 102 can be reduced, so the inner surface of the helical tube 102 can be made smooth, and the flow performance of the helical tube 102 can be improved. Furthermore, since only the lining member 12 made of 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 in which the side edges of the lining member 12 are connected to each other by the connecting member 14, the side edges of adjacent base bodies 20 are butted against each other at the connecting portion, and the first locking piece 30 of the lining member 12 is connected to the base body 20. The second locking pieces 60 of the connecting member 14 face each other inward around the side edges of the base body 20 . That is, at the connecting portion between the side edges of the lining member 12, the first engaging portion 24 of the lining member 12 is sandwiched between the second engaging portion 54 of the connecting member 14. Therefore, a force is applied to the lining member 12 in the direction in which the side edges of the adjacent base bodies 20 approach each other (in the direction in which they come into close contact) due to the engagement between the first engaging part 24 and the second engaging part 54. Therefore, the side edges of the base body 20 of the lining member 12 can be fixed in a state in which they are brought into close contact with each other.

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, at the connecting portion between the side edges of the lining member 12, the third locking pieces 34 of the lining member 12 face outward from each other with the side edge of the base body 20 as the center, and the fourth locking piece of the connecting member 14 64 are turned inward toward each other, and the third engaging portion 26 of the lining member 12 is sandwiched between the fourth engaging portion 56 of the connecting member 14. Therefore, in addition to the engagement between the first engagement part 24 and the second engagement part 54, the lining member 12 also has the following effects due to engagement between the third engagement part 26 and the fourth engagement part 56. A force acts in a direction in which the side edges of adjacent base bodies 20 approach each other. Therefore, the side edges of the base body 20 of the lining member 12 can be fixed in a state where they are brought into close contact with each other more appropriately.

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, double engagement including the engagement between the first engagement part 24 and the second engagement part 54 and the engagement between the third engagement part 26 and the fourth engagement part 56 Since the side edges of the lining members 12 are connected to each other by this, the resistance force in the tensile direction (the direction in which the lining members 12 are separated from each other) is increased in this connected portion. Therefore, even if axial displacement acts on the helical tube 102 during an earthquake, deformation of the connecting portions (first fitting portion 22 and second fitting portion 52) can be suppressed, and water can be stopped by the water stop portion 66. Functionality can be ensured. Furthermore, since the connection strength is ensured by double engagement, the first engagement portion 24, the second engagement portion 54, the third engagement portion 26, and the fourth engagement portion 56 are connected in order to increase the connection strength. There is no need to increase the wall thickness, and the wall thickness can be made equal to other parts, that is, the entire member can be made to have a uniform thickness, making it 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。 Furthermore, since the other side surface 28b of the first protrusion 28 of the first engaging portion 24 is an inclined surface, when the side edges of the lining member 12 are connected by the connecting member 14, the first protrusion A gap 80 is formed on the other side surface 28b side of the strip 28. When the first engaging part 24 and the second engaging part 54 are engaged, the first engaging part 24 made of polyethylene mainly elastically deforms and tilts toward the other side surface 28b, but the gap 80 exists. Thus, the amount of fall of the first engaging portion 24 is ensured. Therefore, the force (pushing force) required for engagement between the first engaging part 24 and the second engaging part 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, when the side edges of the lining member 12 are connected by the connecting member 14, a gap 82 is formed on the other side surface 32b of the third protrusion 32. When the third engaging part 26 and the fourth engaging part 56 are engaged, the third engaging part 26 mainly elastically deforms and tilts toward the other side surface 32b. A margin for the joint portion 26 to fall is ensured. Therefore, the force required for engagement between 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, when the side edges of the lining member 12 are connected to each other by the connecting member 14, the tip of the protrusion 68 formed on the base body 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, the outer surface of the connecting portion 40 of the displacement absorbing portion 36). Therefore, when the spiral pipe 102 is fed into the existing pipe 100, the protrusion 68 comes into sliding contact with the inner surface of the existing pipe 100, and the lining member 12 does not come into sliding contact (or is difficult to come into sliding contact) with the inner surface of the existing pipe 100, so the connecting member 14 allows the lining member 12 to be properly protected. Furthermore, by forming the protrusion 68 on the other main surface 50b of the base 50 of the connecting member 14, when feeding the spiral pipe 102 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. Thereby, the insertion resistance of the helical tube 102 can be reduced, and damage to the helical tube 102 due to sliding contact with the existing tube 100 can be reduced. In this embodiment, since the connecting member 14 is made of a hard vinyl chloride resin with high strength, the effect of protecting the lining member 12 and the effect of reducing damage to the helical 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 body 50 of the connecting member 14 is also located at the end of the lining member 12 in the radial direction of the spiral tube 102 when the side edges of the lining member 12 are connected by the connecting member 14. Located outside the outside. Therefore, when the spiral pipe 102 is fed 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。 Next, with reference to FIGS. 1 and 9, an example of a pipe rehabilitation method for rehabilitating an 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 departure side manhole 110 and the destination side 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 side 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 side manhole 110. . It is preferable that the lining member 12 and the connecting member 14 are individually wound into rolls and prepared and installed. Note that 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, a spiral pipe 102 is constructed within 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 using this pipe making machine 114 is inserted into the existing pipe from inside the starting side manhole 110. 100 in order. In the pipe making machine 114, the lining member 12 is spirally wound so that the side edges of the base body 20 of the lining member 12 are brought into contact with each other, and the connecting member 14 is attached from the outer surface side of the lining member 12. The spiral pipe 102 is manufactured by connecting the adjacent side edges of the pipes.

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 body 20 of the lining member 12 are brought into contact with each other, so that the positioning of the lining member 12 is facilitated, and the pipe production process is facilitated. easy. In addition, the lining member 12 is provided with a fitting portion for the connecting member 14 on the other main surface 20b side (outer surface side) of the base body 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, pipe manufacturing work is difficult with pipe rehabilitation members where connecting members are attached from the inner surface of the lining member.A helical pipe of a size (that is, a relatively small diameter) corresponding to the existing pipe 100 with a medium diameter of 300 mm or more and 1000 mm or less Even if it is 102, it is easy to make a pipe. Moreover, since the spiral tube 102 is formed using two members, the lining member 12 and the connecting member 14, after the lining member 12 is rotated and positioned, the side edges of the lining member 12 are connected and fixed by the connecting member 14. can do. Therefore, when forming the helical tube 102, it is easy to match the circumferential lengths (diameters) of adjacent lining members 12, and the helical tube 102 can be formed with a uniform diameter over the entire length in the axial direction.

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、ライニング部材１２が変位吸収部３６を有するので、仮に既設管１００に曲り部、屈曲部および段差部などがあったとしても、変位吸収部３６が変形することにより、螺旋管１０２は、既設管１００の曲り部、屈曲部および段差部に追従可能となる。 The helical pipe 102 produced by the pipe making machine 114 is extruded from the pipe making machine 114 in order from the produced part, and is sent into the existing pipe 100 toward the reaching side manhole 112 while rotating. At this time, since the lining member 12 has the displacement absorbing part 36, even if the existing pipe 100 has a bent part, bent part, step part, etc., the spiral pipe 102 will be It becomes possible to follow the bent portions, bent portions, and stepped portions of the existing pipe 100.

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。 After constructing the helical pipe 102 over the entire length of the rehabilitation section of the existing pipe 100, a filler 104 is then injected between the inner surface of the existing pipe 100 and the outer surface of the helical pipe 102. By solidifying the filler 104, a rehabilitated pipe (composite pipe) 106 is formed in which the existing pipe 100 and the spiral pipe 102 are integrated, as shown in FIG. Thereafter, the rehabilitation work for the existing pipe 100 is completed by carrying out cleaning work and the like as appropriate.

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 rehabilitated pipe 106, the side protrusions 70 of the connecting member 14 and the displacement absorbing portion 36 of the lining member 12 exert an anchor effect, making it difficult for the helical pipe 102 to come off from the filler 104. The fixing strength between the filler 104 and the filler 104 is improved. Therefore, the existing pipe 100 and the spiral pipe 102 can be firmly integrated by the filler 104.

また、図１０に示すように、施工後において、地震等によって大きな力が螺旋管１０２（更生管１０６）に作用したときには、ライニング部材１２の変位吸収部３６が破断することなく大きく伸長して、螺旋管１０２の軸方向変位を吸収する。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変形が抑制されるので、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（特に止水部６６の周辺部分の形状）が適切に保持され、螺旋管１０２の水密性が適切に確保される。 In addition, as shown in FIG. 10, when a large force is applied to the spiral pipe 102 (rehabilitated pipe 106) due to an earthquake or the like after construction, the displacement absorbing portion 36 of the lining member 12 expands greatly without breaking. Absorbs the axial displacement of the spiral tube 102. This suppresses deformation in the connecting portions of the side edges of the lining member 12, so that the first fitting portion 22 of the lining member 12 and the second fitting portion 52 of the connecting member 14 fit together (in particular, the The shape of the peripheral portion of the water portion 66 is appropriately maintained, and the watertightness of the helical tube 102 is appropriately ensured.

以上のように、この実施例によれば、変位吸収部３６がその幅方向両側部に形成される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とを有するので、変位吸収部３６（延いてはライニング部材１２）の高さ方向の大きさを抑制しつつ、変位吸収部３６の伸長可能幅を大きくすることができ、地震時などにおいて螺旋管１０２の軸方向変位を適切に吸収できる。 As described above, according to this embodiment, the displacement absorbing portion 36 has the two bent portions 38 formed on both sides in the width direction and the connecting portion 40 having a smaller curvature than the bent portions 38, so that the displacement absorbing portion 36 can absorb displacement. The expandable width of the displacement absorbing portion 36 can be increased while suppressing the size of the portion 36 (and by extension the lining member 12) in the height direction, and the axial displacement of the helical tube 102 can be appropriately controlled during an earthquake or the like. can be absorbed into

また、基体２０の一部を弛ませて変位吸収部３６を形成するので、押出成形によってライニング部材１２全体を単一材料で容易に成形することができる。したがって、変位吸収部３６を有するライニング部材１２を容易に製造できる。 Further, since the displacement absorbing portion 36 is formed by loosening a portion of the base body 20, the entire lining member 12 can be easily molded from a single material by extrusion molding. Therefore, the lining member 12 having the displacement absorbing portion 36 can be easily manufactured.

なお、上述したライニング部材１２および連結部材１４を含む管更生部材１０の具体的な構成ないし形状は、単なる一例であり、適宜変更可能である。 Note that the specific configuration or shape of the pipe rehabilitation member 10 including the lining member 12 and the connecting member 14 described above is merely an example, and can be changed as appropriate.

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 parts (the first engaging part 24 and the third engaging part 26) as the fitting part (first fitting part 22) with the connecting member 14. ), but the number of engaging portions may be one. Similarly, the connecting member 14 has two engaging parts (the second engaging part 54 and the fourth engaging part 56) as the fitting part (second fitting part 52) with the lining member 12; There may be only one engaging portion. Further, among the fitting parts formed on the lining member 12 and the connecting member 14, one fitting part can be formed in the shape of a groove, and the other fitting part can be formed in the shape of a protrusion that is fitted into the fitting part.

また、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 embodiment, the gap 42 is formed between the base end portions of the displacement absorbing portions 36 of the lining member 12, but this gap 42 does not necessarily need to be formed. Further, a thin film portion connecting the one main surfaces 20a of the base body 20 to each other so as to cover the gap 42 may be integrally molded, or may be provided by attaching the thin film portion later.

さらに、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。 Further, although not provided in the above embodiment, a reinforcing member may be attached to the outer surface side (the other main surface 20b side) of the lining member 12 in order to increase the rigidity.

さらにまた、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ライニング部材１２を用いたが、これに限定されない。ライニング部材１２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。また、ライニング部材１２は、既設管１００の内面に沿って螺旋状に巻き回し、その隣り合う側縁部同士を連結することによって、既設管１００内で螺旋管１０２を製管する管路更生方法に用いることもできる。 Furthermore, in the above-described embodiment, the lining member 12 is used in a push-in type pipe rehabilitation method in which the spiral pipe 102 is fed into the existing pipe 100 while being rotated, but the present invention is not limited to this. The lining member 12 is a tow-type conduit in which the helical pipe 102 produced in the start-side manhole 110 is pulled by a winch or the like from the destination-side manhole 112 side, and fed into the existing pipe 100 without rotating the helical pipe 102. It can also be used for rehabilitation construction methods. In addition, the lining member 12 is spirally wound along the inner surface of the existing pipe 100 and adjacent side edges thereof are connected to each other, thereby forming a spiral pipe 102 within the existing pipe 100. It can also be used for.

また、上述の実施例では、連結部材１４をライニング部材１２の外面側から取り付けるようにしたが、連結部材１４は、ライニング部材１２の内面側から取り付けられるものであっても構わない。また、必ずしも連結部材１４を用いてライニング部材１２の隣り合う側縁部同士を連結する必要はなく、ライニング部材１２の両側縁部に互いに嵌り合う嵌合部を形成することによって、ライニング部材１２の側縁部同士を直接連結するようにしてもよい。 Further, in the above embodiment, the connecting member 14 is attached from the outer surface of the lining member 12, but the connecting member 14 may be attached from the inner surface of the lining member 12. Further, it is not always necessary to connect adjacent side edges of the lining member 12 using the connecting member 14, but by forming fitting portions that fit into each other on both side edges of the lining member 12, the lining member 12 can be The side edges may be directly connected to each other.

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, a composite pipe (rehabilitated pipe 106) is formed by integrating the existing pipe 100 and the spiral pipe 102 with the filler 104, but the present invention is not limited thereto. The pipe rehabilitation member 10 can also form a self-supporting pipe that maintains its strength independently from 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。 Note that the specific numerical values such as the dimensions listed above are merely examples, and can be changed as appropriate depending on the needs of 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 …基体（ライニング基体）
３６ …変位吸収部
３８ …屈曲部
４０ …連結部
４０ａ …連結部の内面
４２ …隙間
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...Base (lining base)
36...Displacement absorption part 38...Bending part 40...Connecting part 40a...Inner surface of the connecting part 42...Gap 100...Existing pipe 102...Spiral pipe 104...Filling material 106...Rehabilitated pipe

Claims

A lining member that is spirally wound and forms a spiral tube by connecting adjacent side edges using a connecting member ,
a strip-shaped base having one main surface constituting the inner surface of the spiral tube;
a first fitting part formed on each of both sides of the other main surface of the base, into which a second fitting part formed on the connecting member is fitted from the outer surface side of the helical tube; and a part of the base. a displacement absorbing portion formed by loosening in the width direction so as to protrude toward the other main surface side of the base body,
The displacement absorbing portion is a lining member including bent portions formed on both sides in the width direction, and a connecting portion having a smaller curvature than the bent portions that connects the bent portions.

The lining member according to claim 1, wherein the inner surface of the connecting portion is flat.

The lining member according to claim 1 or 2, wherein a gap is formed between base end portions of the displacement absorbing portion.

4. The lining member according to claim 1, wherein the lining member is used in a push-type pipe rehabilitation method in which the spiral pipe is sequentially fed into an existing pipe while forming the spiral pipe within a manhole. The lining member described.