Method and structure for extending belt-shaped members of rehabilitating pipes

Abstract

To enhance a rust prevention property and corrosion resistance of a reinforcement member at an addition part of a belt-shaped member of a regeneration pipe.SOLUTION: An addition method of a belt-shaped member 3 in a middle timing of pipe-production of a regeneration pipe 2 on an inner circumference of an existing pipe 1 by using a self-propelled pipe-production machine 50 comprises: an installation step of installing a spacer 60 between a terminal end 3Fe of a preceding belt-shaped member 3F and a starting end 3Rs of a succeeding belt-shaped member 3R; a pipe-production step in which production of the regeneration pipe 2 is started using the succeeding belt-shaped member 3R in a state in which the spacer 60 is interposed between the terminal end 3Fe of the preceding belt-shaped member 3F and the starting end 3Rs of the succeeding belt-shaped member 3R; a spacer removing step of removing the spacer 60 from a gap S between the terminal end 3Fe of the preceding belt-shaped member 3F and the starting end 3Rs of the succeeding belt-shaped member 3R; and a filling step of filling the gap S with a filling material 70 to cover an end face of a reinforcing member 20 by the filling material 70 in which a metal surface is exposed at the terminal end 3Fe of the preceding belt-shaped member 3F and the starting end 3Rs of the succeeding belt-shaped member 3R.SELECTED DRAWING: Figure 3D

Description

[Technical field]

[0001] The present invention relates to a method and structure for adding a strip-shaped member when manufacturing a rehabilitated pipe using the strip-shaped member. [Background technology]

[0002] A method of rehabilitating an existing pipe, such as an aging sewer pipe, by spirally winding a strip-shaped member (profile) around the inner surface of the existing pipe to produce a rehabilitated pipe made of a spiral pipe is known.

[0003] Some belt-shaped members have steel reinforcing members attached to the outer periphery of the main belt material made of polyvinyl chloride resin or the like, which extends in the belt length direction, but in this case, consideration must be given to rust and corrosion prevention of the reinforcing members. Generally, the gap between the existing pipe and the newly manufactured rehabilitated pipe is filled with a lining material, and the reinforcing members are embedded in this lining material, so they are rust and corrosion-resistant. In the belt-shaped member disclosed in Patent Document 1, an anti-rust and anti-corrosion layer is formed on the surface in order to enhance the anti-rust and anti-corrosion properties of the reinforcing member. Additionally, in order to eliminate the need for backing material between the existing pipe and the rehabilitated pipe, a band-shaped member has been developed in which the reinforcing member is wrapped in the resin of the main band material, further enhancing rust and corrosion resistance.

[0004] When a strip-shaped member is not long enough to produce a rehabilitated pipe, it is necessary to add a strip-shaped member. In a typical method of adding a strip-shaped member using a self-propelled pipe-making machine, the traveling means of the pipe-making machine is driven to feed the succeeding strip-shaped member to be added toward the end of the preceding strip-shaped member used to produce the rehabilitated pipe, and the start end of the succeeding strip-shaped member is butted against the end of the preceding strip-shaped member, and the pipe-making is continued while self-propelled using the succeeding strip-shaped member. Then, during or after the pipe-making is completed, the start end of the succeeding strip-shaped member and the end of the preceding strip-shaped member are resin-welded.

[0005] The joining method disclosed in Patent Document 2 is as follows: With a gap formed between the end of the preceding strip-shaped member and the start of the succeeding strip-shaped member, the reinforcing members of the two strip-shaped members are connected using a long, thin, curved steel joint member. Pipe making is then continued using the connected succeeding strip-shaped member. During or after pipe making is completed, a plastic joint member is fitted into the gap and resin welded. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2020-175599 A [Patent Document 2] JP 2019-181798 A Summary of the Invention [Problem to be solved by the invention]

[0007] In the general extension method described above and the extension method of Patent Document 2, the end faces (exposed metal faces) of the reinforcing members are left exposed at the end of the preceding strip-shaped member and the start of the succeeding strip-shaped member. Therefore, even if a lining material is filled between the rehabilitated pipe and the existing pipe, it is not possible to completely cover the end faces of the reinforcing members, and there is a possibility that rust and corrosion resistance cannot be sufficiently ensured. Patent document 1 discloses that the metal surface of the reinforcing member exposed by forming a through hole in the rehabilitated pipe is covered with an anti-rust and anti-corrosion material, but does not disclose the method or structure for adding a strip-shaped member during the manufacturing process of the rehabilitated pipe. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides a method for producing a rehabilitating pipe around the inner circumference of an existing pipe by spirally winding a strip-shaped member using a pipe-producing machine and fitting together side edges of adjacent wound portions, and in the middle of this pipe-producing process, adding a subsequent strip-shaped member to the end of the preceding strip-shaped member that was being used to produce the rehabilitating pipe, The belt-shaped member comprises a resin main belt material and a metal reinforcing member extending in the longitudinal direction of the main belt material and attached to the outer periphery of the main belt material, the reinforcing member being wrapped in the resin of the main belt material or having a surface covered with an anti-rust / anti-corrosion layer; After the pipe making of the preceding strip-shaped member is completed, the pipe making of the subsequent strip-shaped member is continued in a state in which the end end of the preceding strip-shaped member and the start end of the subsequent strip-shaped member are spaced apart, and during or after the pipe making is completed, a filling material is filled into the gap between the end end of the preceding strip-shaped member and the start end of the subsequent strip-shaped member, and a filling process is carried out in which the filling material is used to cover the end faces of the reinforcing members where the metal surfaces are exposed at the end end of the preceding strip-shaped member and the start end of the subsequent strip-shaped member.

[0009] According to the above method, the exposure of the metal surface of the end face of the reinforcing member at the extension portion of the belt-shaped member can be prevented by the filling material, so that the reinforcing member can be reliably protected from rust and corrosion.

[0010] Preferably, in the filling step, the filling material is filled not only into the gap but also into the vicinity of the end of the preceding strip-shaped member and the vicinity of the start of the succeeding strip-shaped member. This method can sufficiently ensure watertightness at the extension portion.

[0011] Preferably, in the filling step, the filling material is filled up to the inner circumference of the existing pipe. According to this method, pressure resistance at the extension portion can be ensured.

[0012] Preferably, the pipe making machine is a self-propelled pipe making machine having a traveling means, and is equipped with an installation process for installing a spacer between the end end of the leading strip member and the start end of the trailing strip member, a pipe making process for starting to manufacture the rehabilitation pipe using the trailing strip member with the spacer interposed between the end end of the leading strip member and the start end of the trailing strip member by the pipe making machine, a spacer removal process for removing the spacer from the gap between the end end of the leading strip member and the start end of the trailing strip member, and the filling process. According to this method, when using a self-propelled pipe making machine, pipe making using the following strip-shaped member can be started while the spacer reliably maintains a gap between the end of the preceding strip-shaped member and the start of the following strip-shaped member.

[0013] Preferably, the spacer removal process is carried out with the pipe making machine stopped once after it starts pipe making using the subsequent strip-shaped member and before it again reaches the end of the preceding strip-shaped member. According to this method, the spacer can be removed relatively easily while the sides of the gap between the end of the leading strip and the start of the following strip are left open.

[0014] Preferably, the filling step is performed after at least one circumference of the subsequent strip-shaped member is produced from the starting end of the subsequent strip-shaped member, which can reliably prevent the filling material from interfering with the production of the subsequent strip-shaped member.

[0015] Preferably, after the filling step, a resin cover is attached to the inner surface of the rehabilitating pipe to cover the filling material. With this method, it is possible to prevent the filling material from being exposed to the fluid flowing through the rehabilitating pipe.

[0016] Preferably, the step of installing the spacer includes: a. a step of feeding the trailing strip toward the leading strip by rotating the traveling means of the pipe making machine in the normal direction, and abutting the starting end of the trailing strip against the ending end of the leading strip; b. a step of transferring the pipe making machine from the preceding strip to the succeeding strip by rotating the traveling means in the normal direction; c. Reversing the rotation of the traveling means to move the trailing strip away from the leading strip, forming an initial gap between the starting end of the trailing strip and the ending end of the leading strip that is wider than the width of the spacer; d. inserting the spacer into the initial gap; e. again rotating the traveling means in the normal direction to feed the succeeding strip toward the preceding strip, and abutting the starting end of the succeeding strip against the spacer, thereby sandwiching the spacer between the starting end of the succeeding strip and the trailing end of the preceding strip; Includes. According to this method, the spacers can be installed smoothly and reliably using a self-propelled pipe making machine.

[0017] Another aspect of the present invention is a structure in which a belt-shaped member is wound in a spiral shape and the side edges of adjacent wound portions are fitted together to manufacture a rehabilitating pipe on the inner circumference of an existing pipe, in which a succeeding belt-shaped member is joined to the end of a preceding belt-shaped member, The strip-shaped member comprises a resin main strip material and a metal reinforcing member extending in the strip length direction of the main strip material and attached to the outer periphery of the main strip material, the reinforcing member being wrapped in the resin of the main strip material or its surface being covered with a rust- and corrosion-resistant layer, a gap being formed between the end end of the leading strip member and the start end of the following strip member, and this gap being filled with a filling material, which covers the end faces of the reinforcing member where the metal surface is exposed at the end end of the leading strip member and the start end of the following strip member. [Brief description of the drawings]

[0018] [Figure 1] 1 is a diagram showing an outline of a process for producing a rehabilitation pipe along the inner circumference of an existing pipe using a strip-shaped member. FIG. [Diagram 2] FIG. 4 is a cross-sectional view of the belt-shaped member. [Figure 3A] This is a front view of the state in which the preceding strip-shaped member is interrupted midway through the production of the rehabilitated pipe, as seen from the inside of the rehabilitated pipe. [Figure 3B] This is a front view showing the state in which pipe making using a subsequent strip-shaped member has begun, with a spacer interposed in the gap between the end of the preceding strip-shaped member and the start of the subsequent strip-shaped member. [Figure 3C] A front view showing the state in which the spacer has been removed from the gap and pipe making has continued with a new winding portion of the subsequent strip-shaped material. [Figure 3D]FIG. 4 is a front view showing the state in which the gap is filled with a filling material. [Figure 3E] 13 is a front view showing a state in which a cover for covering the mortar is attached to the inner peripheral surface of the rehabilitation pipe. FIG. [Figure 4] 4(A) to 4(D) are cross-sectional views taken along the line IV-IV in FIG. 3A to FIG. 3D, respectively. [Diagram 5] 10(A) to 10(F) are schematic front views sequentially illustrating a process of installing a spacer in the gap between the end of a preceding strip-shaped member and the start of a succeeding strip-shaped member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] An embodiment of the present invention will be described below with reference to the drawings. As shown in Fig. 1, the inner peripheral surface of an existing pipe 1, such as an aged sewer pipe, is lined with a rehabilitation pipe 2 to rehabilitate the existing pipe 1. Examples of the existing pipe 1 include sewer pipes, water supply pipes, agricultural water pipes, hydroelectric power generation water pipes, gas pipes, and the like.

[0020] The rehabilitation pipe 2 is manufactured by spirally winding a strip-shaped member 3 (profile) around the inner circumference of an existing pipe 1. As shown in Fig. 2, the strip-shaped member 3 includes a main strip 10 and a plurality of reinforcing members 20 that extend in the strip length direction of the main strip 10 and are attached to the outer periphery of the main strip. Both ends of the strip-shaped member 3 are aligned to form planes perpendicular to the strip length direction.

[0021] The main band material 10 is obtained by extrusion molding of a resin such as polyvinyl chloride or polyethylene. The main band material 10 has a flat band portion 11, fitting portions 13 and 14 formed on both side edges of the flat band portion 11, and a plurality of ribs 15 formed on the outer peripheral surface of the flat band portion 11 and standing perpendicular to the flat band portion 11. The flat band portion 11 is formed in a flat band shape, and the flat band portion 11 defines a smooth inner peripheral surface of the rehabilitation pipe 2. The fitting portions 13 and 14 have complementary shapes, with the fitting portion 13 being female and the fitting portion 14 being male.

[0022] The reinforcing member 20 is made of a long, narrow flat steel plate (metal plate) and is embedded in the ribs 15 of the main strip material 10. In other words, the reinforcing member 20 is surrounded all around by the resin material of the main strip material 10, and has high rust and corrosion resistance. However, at both ends of the strip member 3, the reinforcing member 20 is not covered with resin and the metal surface is exposed.

[0023] The self-propelled pipe making machine 50 winds the strip-shaped member 3 in a spiral shape, and the fitting portions 13, 14 of adjacent wound portions are pressed in the thickness direction to fit together, thereby making the rehabilitating pipe 2.

[0024] <How to add belt-shaped components> Since one strip-shaped member 3 is not enough to line the rehabilitating pipe 2 over the entire length of the existing pipe 1, additional strip-shaped members 3 are added during the pipe manufacturing process. In the following explanation and drawings, when distinguishing between the preceding strip-shaped member used in manufacturing the rehabilitating pipe 2 and the succeeding strip-shaped member, the preceding strip-shaped member will be given the symbol 3F and the succeeding strip-shaped member will be given the symbol 3R.

[0025] The method for adding the belt-shaped member will be described step by step below. <Spacer installation process> 3A and 4A show a state where the preceding strip-shaped member 3F is interrupted during the pipe manufacturing of the rehabilitating pipe 2. In this state, as shown in FIG. 3B and FIG. 4B, one side of a rectangular parallelepiped spacer 60 is placed against the end 3Fe of the preceding strip-shaped member 3F, and the start end 3Rs of the succeeding strip-shaped member 3R is placed against the other side of the spacer 60. In this way, the spacer 60 is placed in the gap S between the end 3Fe of the preceding strip-shaped member 3F and the start end 3Rs of the succeeding strip-shaped member 3R. The width of the spacer 60, i.e., the width of the gap S, is large enough to allow a finger to enter in the filling process described later, and is, for example, 20 mm to 35 mm. The spacer 60 has a screw hole 61 formed on the radially inner surface of the rehabilitating pipe 2.

[0026] <Pipe manufacturing process> After the spacer 60 is placed in the gap S as described above, pipe making using the following strip-shaped member 3R is started by the self-propelled pipe making machine 50. That is, the fitting portion 14 near the starting end 3Rs of the following strip-shaped member 3R is fitted into the fitting portion 13 at a portion one revolution before the end 3Fe of the preceding strip-shaped member 3F. At this time, the following strip-shaped member 3R is subjected to a force toward the preceding strip-shaped member 3F, but the gap S is maintained by the spacer 60.

[0027] <Spacer removal process> Before the first revolution of the subsequent strip-shaped member 3R is produced by the above-mentioned pipe making (i.e., before the pipe making machine 50 reaches the end 3Fe of the preceding strip-shaped member 3F and the spacer 60), the pipe making machine 50 is stopped once and the spacer 60 is removed from the gap S. The spacer 60 is sandwiched between the end 3Fe of the strip-shaped member 3F and the start end 3Rs of the subsequent strip-shaped member 3R, but the spacer 60 can be removed from the gap S by screwing a bolt (not shown) into the screw hole 61 of the spacer 60 and pulling it radially inward. One side of the gap S is open, so that the spacer 60 can be removed relatively easily.

[0028] <Pipe manufacturing restart process> After removing the spacer 60, pipe making using the subsequent strip-shaped member 3R is resumed, and when at least one revolution of the subsequent strip-shaped member 3R is made from its starting end 3Rs as shown in Fig. 3C and Fig. 4(C), the gap S becomes a rectangular space over the entire circumference. More specifically, the gap S is defined by the starting end 3Fe of the preceding strip-shaped member 3F, the starting end 3Rs of the subsequent strip-shaped member 3R, the portion of the preceding strip-shaped member 3F one revolution before, and the portion of the subsequent strip-shaped member 3R one revolution after.

[0029] The end face of the reinforcing member 20 located at the end 3Fe of the preceding strip-shaped member 3F and the end face of the reinforcing member 20 located at the start 3Rs of the succeeding strip-shaped member 3R face the gap S, with their metal surfaces exposed.

[0030] <Filling process> After the state shown in Figures 3C and 4(C) is reached, during or after the production of the rehabilitating pipe 2, the gap S is filled with a filling material 70 having a predetermined viscosity that does not drip or run off, as shown in Figures 3D and 4(D). This prevents the filling material 70 from interfering with the subsequent production of the strip-shaped member 3R, and allows the filling material 70 to be efficiently filled into the gap S that is surrounded on all sides. As the filling material 70, quick-drying mortar is used, but a resin material that hardens after being filled into the gap S by mixing a base agent with a hardener (for example, Estdrenthite made by Sekisui Chemical Co., Ltd.) may also be used.

[0031] The gap S has a width dimension equal to that of the spacer 60, allowing a finger to be inserted and providing a sufficient space for filling. The filling material 70 covers the end faces of the reinforcing members 20 located at the end 3Fe of the preceding strip member 3F and the start 3Rs of the succeeding strip member 3R, and is filled so as to fill the space between the main strip 10 and the existing pipe 1 over an area wider than the area corresponding to the gap S. That is, the filling material is filled into the back side (outer periphery) of the flat strip portion 11 of the main strip 10 and between the ribs 15, and is filled until it reaches the inner periphery of the existing pipe 1.

[0032] The filling material 70 is filled until it is almost flush with the inner peripheral surface of the rehabilitation pipe 2. Finally, as shown in Fig. 3E, a resin cover 80 made of polyvinyl chloride or the like is attached to the inner peripheral surface of the rehabilitation pipe 2 with an epoxy adhesive or the like, thereby covering the filling material 70 filled in the gap S.

[0033] In the extension structure constructed as described above, the reinforcing member 20 is wrapped in the resin of the main band material 10, and the end faces of the reinforcing member 20 of the band-shaped members 3F, 3R are also covered with the filling material 70, so that it is possible to eliminate exposed metal surfaces over the entire area of ​​the reinforcing member 20, and it is possible to reliably obtain anti-rust and anti-corrosion effects. Therefore, the process of filling the gap between the existing pipe and the rehabilitating pipe 2 with a lining material can be omitted.

[0034] The filling material 70 is filled on the back side of the strip-shaped members 3F, 3R over an area wider than the gap S, so sufficient watertightness can be ensured. In addition, since the filling material is filled up to the inner peripheral surface of the existing pipe 1, the strength against the internal pressure of the rehabilitating pipe 2 can be ensured even at the extension portion.

[0035] <Details of the spacer installation process> Next, the installation process of the spacer 60 will be described in detail with reference to Fig. 5. As shown in the figure, the self-propelled pipe making machine 50 has a pair of first drive rollers 51 on the front side and a pair of second drive rollers 52 (traveling means) on the rear side. Note that the means for pressing the belt-shaped member 3 in the thickness direction to fit the fitting portions 13, 14 is well known, so it is not shown in the figure and its description will be omitted.

[0036] The pipe making machine 50 makes a rehabilitated pipe 2 using the preceding strip-shaped member 3F, and moves along the preceding strip-shaped member 3F. When the strip-shaped member 3F ends, the first driving roller 51 passes the end 3Fe of the strip-shaped member 3F and starts to rotate freely, as shown in Figure 5(A), so that the first and second driving rollers 51, 52 automatically stop.

[0037] Next, the trailing strip-shaped material 3R is inserted into the pipe making machine 50 and the first drive roller 51 is driven again to rotate in the forward direction, so that, as shown in Figure 5(B), the trailing strip-shaped material 3R is sent toward the leading strip-shaped material 3F, and the starting end 5Rs of the trailing strip-shaped material 3R abuts against the ending end 3Fe of the leading strip-shaped material 3F.

[0038] Next, by rotating both the first and second drive rollers 51, 52 in the forward direction, the pipe making machine 50 moves on its own as shown in FIG. 5(C), and the first and second drive rollers 51, 52 move onto the succeeding belt-shaped member 3R.

[0039] Next, when the first and second driving rollers 51, 52 are rotated in the reverse direction, the trailing belt-shaped member 3R moves in a direction away from the leading belt-shaped member 3R as shown in Fig. 5(D). As a result, an initial gap S' wider than the width of the spacer 60 is generated between the end 3Fe of the leading belt-shaped member 3F and the starting end 5Rs of the trailing belt-shaped member 3R.

[0040] Next, as shown in FIG. 5(E), a spacer 60 is inserted into the initial gap S' so as to be aligned with the end 3Fe of the preceding strip-shaped member 3F.

[0041] Next, when the drive rollers 51, 52 are rotated forward again, the trailing belt-shaped member 3R moves toward the leading belt-shaped member 3F, and its starting end 3Rs abuts against the spacer 60. As a result, a gap S equal to the width dimension of the spacer 60 is obtained between the end 3Fe of the leading belt-shaped member 3F and the starting end 5Rs of the trailing belt-shaped member 3R. As the drive rollers 51, 52 continue to be driven (rotating forward), the pipe making machine 50 continues making pipe while moving autonomously along the succeeding belt-shaped member 3R.

[0042] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. The main band material and reinforcing members of the band-shaped member shown in the figures are merely examples, and are not limited to the cross-sectional shapes shown in the figures, and various other shapes can be applied. The reinforcing member may be provided with an anti-rust and anti-corrosion layer formed on its entire surface without being wrapped in the resin of the main strip material. The rust- and corrosion-resistant layer is not limited to resin, but may be a metal oxide film, a rust- and corrosion-resistant metal film, or a rust- and corrosion-resistant coating film. The reinforcing member and the main strip material may be separate bodies, and the reinforcing member may be attached to the outer peripheral surface side of the main strip material. The spacer 60 may be a solid, hollow or one-sided box, or may have a U-shaped cross section consisting of a top plate and legs extending therefrom. When the spacer 60 is provided between the strip members, the spacer 60 may be connected to the preceding strip member or the following strip member. In the above-described embodiment, the lining material between the existing pipe and the rehabilitating pipe is omitted, but a lining material may be filled in as necessary. [Industrial Applicability]

[0043] The present invention can be applied to a method for adding a strip-shaped member during the manufacturing process of a rehabilitated pipe. [Explanation of symbols]

[0044] 1 Existing pipes 2 Rehabilitation pipe 3. Strip-shaped member (profile) 3F Leading strip (other strip) 3Fe termination 3R Subsequent strip (one strip) 3Rs starting point 10 Main strip material 20 Reinforcement member 50 Self-propelled pipe making machine 51, 52 First and second driving rollers (traveling means) 60 Spacer 70 Filling material 80 Resin cover S Gap S' Initial gap

Claims

1. A method for producing a rehabilitating pipe around an inner circumference of an existing pipe by spirally winding a strip-shaped member using a pipe-making machine and fitting together the side edges of adjacent wound portions, and during this pipe-making process, adding a subsequent strip-shaped member to the end of a preceding strip-shaped member that was used to make the rehabilitating pipe, comprising: The belt-shaped member includes a resin main belt material and a metal reinforcing member that extends in the belt length direction of the main belt material and is attached to the outer periphery of the main belt material, and the outer periphery of the reinforcing member is entirely wrapped in the resin of the main belt material or the outer periphery surface of the reinforcing member is entirely covered with a rust-proof / corrosion-proof layer, After the pipe making of the preceding strip-shaped member is completed, the pipe making of the succeeding strip-shaped member is continued in a state where the end of the preceding strip-shaped member and the start of the succeeding strip-shaped member are spaced apart from each other; A method for adding strip-shaped members to a rehabilitated pipe, characterized in that a filling process is carried out during or after the pipe making process is completed, in which a filling material is filled into the gap between the end end of the preceding strip-shaped member and the start end of the following strip-shaped member, and this filling material is used to cover the end faces of the reinforcing members where the metal surfaces are exposed at the end end of the preceding strip-shaped member and the start end of the following strip-shaped member.

2. A method for extending strip-shaped members to a rehabilitation pipe as described in claim 1, characterized in that in the filling process, the filling material is filled not only into the gap but also into the vicinity of the end of the preceding strip-shaped member and the vicinity of the start of the following strip-shaped member.

3. 3. The method for extending a belt-shaped member to a rehabilitating pipe according to claim 2, wherein in the filling step, the filling material is filled up to an inner circumference of the existing pipe.

4. The pipe making machine is a self-propelled pipe making machine having a traveling means, a step of installing a spacer between the end of the preceding strip and the start of the succeeding strip; a pipe making process in which the pipe making machine starts making the rehabilitating pipe using the succeeding strip-shaped member with the spacer interposed between the end of the preceding strip-shaped member and the start of the succeeding strip-shaped member; a spacer removing step of removing the spacer from a gap between the end of the preceding strip member and the start of the succeeding strip member; The filling step; The method for extending a belt-shaped member of a rehabilitating pipe according to any one of claims 1 to 3, further comprising:

5. A method for adding strip-shaped members to a rehabilitated pipe as described in claim 4, characterized in that the spacer removal process is performed with the pipe making machine stopped once after the pipe making machine starts making pipe using the subsequent strip-shaped member and before it reaches the end of the preceding strip-shaped member again.

6. 6. The method for adding a strip-shaped member to a rehabilitating pipe according to claim 4 or 5, wherein the filling step is carried out after at least one circumference of the succeeding strip-shaped member has been produced from the starting end of the succeeding strip-shaped member.

7. 7. The method for extending a strip-shaped member to a rehabilitating pipe according to claim 4, further comprising attaching a resin cover to the inner surface of the rehabilitating pipe to cover the filling material after the filling step.

8. The spacer installation step includes: a) a step of feeding the trailing strip toward the leading strip by rotating the traveling means of the pipe making machine in the normal direction, and abutting the starting end of the trailing strip against the ending end of the leading strip; b) transferring the pipe making machine from the preceding strip to the succeeding strip by rotating the traveling means in the normal direction; c) Reversing the rotation of the traveling means to move the trailing strip away from the leading strip, forming an initial gap between the starting end of the trailing strip and the ending end of the leading strip that is wider than the width of the spacer; d. inserting the spacer into the initial gap; e) again rotating the traveling means in the normal direction to feed the succeeding strip toward the preceding strip, and abutting the starting end of the succeeding strip against the spacer, thereby sandwiching the spacer between the starting end of the succeeding strip and the trailing end of the preceding strip; The method for extending a band-shaped member to a rehabilitating pipe according to any one of claims 4 to 7, further comprising:

9. A rehabilitating pipe is manufactured on the inner circumference of an existing pipe by spirally winding a strip-shaped member and fitting the side edges of adjacent wound portions together, and a subsequent strip-shaped member is joined to the end of the preceding strip-shaped member, The belt-shaped member includes a resin main belt material and a metal reinforcing member that extends in the belt length direction of the main belt material and is attached to the outer periphery of the main belt material, and the outer periphery of the reinforcing member is entirely wrapped in the resin of the main belt material or the outer periphery surface of the reinforcing member is entirely covered with a rust-proof / corrosion-proof layer, A strip-shaped member extension structure for a rehabilitation pipe, characterized in that a filling material is filled between the end end of the preceding strip-shaped member and the start end of the following strip-shaped member, and this filling material covers the end faces of the reinforcing members whose metal surfaces are exposed at the end of the preceding strip-shaped member and the start end of the following strip-shaped member.

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