Rehabilitation bodies and rehabilitation methods

Abstract

To obtain a rehabilitation body including rehabilitation panels fixed on an inner peripheral surface of an existing tubular structure, which can increase the fixing strength of the rehabilitation panels to the existing tubular structure.SOLUTION: A rehabilitation body 100 for rehabilitating an inner peripheral surface of an existing tubular structure includes a plurality of supports 120 and a plurality of rehabilitation panels 110. Each of the plurality of supports 120 is configured to be able to be fixed to an inner peripheral surface, and each of the plurality of supports 120 is configured to be able to support at least one rehabilitation panel 110 of the plurality of rehabilitation panels 110.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a rehabilitation body used for rehabilitating an existing tubular structure and a method for rehabilitating the inner surface of an existing tubular structure using this rehabilitation body. [Background technology]

[0002] Conventionally, when it comes to existing pipes (which may be existing tubular structures) such as aging sewer pipes, work to reinforce or repair the existing pipes has been carried out, since replacing them with new piping would be a major undertaking.

[0003] For such construction work, a rehabilitation method is used to improve existing deteriorated pipes so that they perform equal to or better than new pipes.

[0004] One example of a rehabilitation method is to install a long, flat thermoplastic resin repair member in a tubular shape along the inner surface of the existing pipe, and then fill the gap between the repair member and the existing pipe with a filler material (e.g., mortar, concrete, etc.) to rehabilitate the existing pipe (Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4864067 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention aims to obtain a rehabilitation body including a rehabilitation panel fixed onto the inner surface of an existing tubular structure, which can increase the fixing strength of the rehabilitation panel to the existing tubular structure, and to obtain a rehabilitation method that makes it possible to rehabilitate an existing tubular structure using such a rehabilitation body, in particular a rehabilitation method that is applicable to existing pipes (pipes) with a large cross-section of more than 6000 mm. [Means for solving the problem]

[0007] The present invention provides the following: (Item 1) A rehabilitation body for rehabilitating the inner circumferential surface of an existing tubular structure, The rehabilitated body is A plurality of supports; Multiple rehabilitation panels and Equipped with A rehabilitation body, wherein each of the plurality of supports is configured to be capable of being fixed to the inner circumferential surface, and each of the plurality of supports is configured to be capable of supporting at least one of the plurality of rehabilitation panels. (Item 2) Each of the plurality of supports is A support mechanism for supporting the at least one rehabilitating panel; an adjustment mechanism capable of adjusting a distance between the inner circumferential surface and the at least one rehabilitating panel; The reconstructed body according to item 1, comprising: (Item 3) The support mechanism includes: A base portion fixed to the inner circumferential surface; a first engagement portion for engaging with the at least one rehabilitating panel; a first connecting portion for connecting the first engagement portion to the base portion; The reconstructed body according to item 2, comprising: (Item 4) 4. The rehabilitating body according to any one of items 1 to 3, wherein each of the plurality of supports has a second connecting portion for connecting to another adjacent support. (Item 5) Each of the plurality of supports is A base member; a plurality of engagement members attached to the base member; a fixing member for fixing the base member to the inner circumferential surface; Including, 2. The rehabilitation body according to claim 1, wherein each of the plurality of engagement members is a member capable of engaging with any one of the plurality of rehabilitation panels. (Item 6) Item 6. The rehabilitating body according to item 5, wherein a reinforcing sheet is provided on a surface of the base member facing the inner circumferential surface. (Item 7) The rehabilitated body described in item 5 or 6, wherein the plurality of rehabilitated panels includes a third rehabilitated panel, which engages with an adjacent support via a part of another rehabilitated panel, and a connecting member connecting the adjacent support among the plurality of supports with which the third rehabilitated panel is engaged has an abutment piece that abuts against a rib formed on the back side of the third rehabilitated panel. (Item 8) The rehabilitating body according to any one of items 1 to 6, wherein each of the plurality of rehabilitating panels includes a second engagement portion at both ends in the inner circumferential direction along the inner circumferential surface for engaging with another adjacent rehabilitating panel. (Item 9) The plurality of rehabilitating panels include one or more first panels; one or more second panels; One or more third panels; Including, the second engagement portion included in each of the one or more first panels has a first groove portion formed at one end in an inner circumferential direction along the inner circumferential surface and a second groove portion formed at the other end in the inner circumferential direction, the second engagement portion included in each of the one or more second panels has a third groove portion formed at one end in the inner circumferential direction and a first protrusion portion formed at the other end in the inner circumferential direction, the second engagement portion included in each of the one or more third panels has a second protrusion formed at one end in the inner circumferential direction and a third protrusion formed at the other end in the inner circumferential direction, Item 9. The rehabilitating body according to item 8, wherein the first panel, the second panel, and the third panel are arranged in a predetermined order in the inner circumferential direction. (Item 10) a first protrusion of the second panel configured to be engageable with the first groove of the first panel; the second protrusion of the third panel is configured to be engageable with the second groove of the first panel; 10. The rehabilitative body of item 9, wherein the third protrusion of the third panel is configured to be engageable with the third groove of the second panel. (Item 11) the plurality of rehabilitating panels further includes one or more fourth panels; The one or more fourth panels include a first plate-like piece and a second plate-like piece, and have a bent plate portion in which one long side of the first plate-like piece and one long side of the second plate-like piece are joined together such that the surfaces of the two plate-like pieces form an obtuse angle; The second engagement portion included in each of the one or more fourth panels has a fourth groove portion formed at one end of the bent plate portion in the inner circumferential direction along the inner circumferential surface, and a fourth protrusion portion formed at the other end of the bent plate portion in the inner circumferential direction. Rehabilitation body. (Item 12) the fourth protrusion of the fourth panel is configured to be engageable with the third groove of the second panel, Item 12. The rehabilitating body according to item 11, wherein the fourth groove portion of the fourth panel is configured to be engageable with the first protrusion portion of the second panel. (Item 13) The third rehabilitated panel engages with the adjacent support via a part of the first rehabilitated panel or the second rehabilitated panel, and a regulating member including a contact piece that abuts against a protrusion formed on the back side of the third rehabilitated panel is attached to a portion of the plurality of supports that connects the adjacent supports with which the third rehabilitated panel is engaged. The rehabilitated body described in any one of items 8 to 12. (Item 14) Each of the plurality of rehabilitation panels has a rectangular shape, and the plurality of rehabilitation panels are arranged such that a long side of the rectangle extends along an axial direction of the tubular structure and a short side of the rectangle extends along an inner circumferential direction along the inner circumferential surface, 14. The rehabilitating body according to any one of items 1 to 13, wherein the size of the rectangle is the same for each of the plurality of rehabilitating panels. (Item 15) 15. The rehabilitating body according to any one of claims 1 to 14, wherein the rehabilitating panel contains glass fiber. (Item 16) Item 16. The rehabilitated body according to any one of items 1 to 15, further comprising a reinforcing plate including carbon fiber bonded to the inner circumferential surface. (Item 17) The rehabilitated body according to any one of items 1 to 16, wherein gaps between adjacent rehabilitated panels arranged in the axial direction of the tubular structure among the plurality of rehabilitated panels are filled with a joint material including a heating wire. (Item 18) A method for rehabilitating an inner circumferential surface of an existing tubular structure, comprising: Fixing a plurality of supports to the inner circumferential surface; Attaching a plurality of rehabilitating panels to the plurality of supports; Including, A method, wherein each of the plurality of supports is configured to be capable of supporting at least one of the plurality of rehabilitating panels. (Item 19) Each of the plurality of supports has a second connecting portion for connecting to another adjacent support, Attaching the plurality of supports to the inner circumferential surface includes forming one or more support assembly by connecting two or more supports of the plurality of supports via the second connecting portion; Fixing a leading support member located at one end of the plurality of supports included in each of the one or more support-support-member combinations to a predetermined position on the inner circumferential surface; fixing a support adjacent to the leading support to a final support located at the other end of the plurality of supports along the direction of the inner circumferential surface at an arrangement pitch of the plurality of supports in the support link body; 19. The method according to item 18, comprising: (Item 20) Each of the plurality of supports is a first engagement portion capable of engaging with at least one of the plurality of rehabilitating panels; an adjustment mechanism capable of adjusting a gap between the at least one rehabilitating panel and the inner circumferential surface; Equipped with Attaching the plurality of rehabilitating panels to the plurality of supports includes: 20. The method according to claim 18 or 19, further comprising adjusting a distance between the at least one rehabilitating panel and the inner circumferential surface with the at least one support by the adjustment mechanism. (Item 21) Each of the plurality of rehabilitating panels is provided with a second engagement portion at each end in the inner circumferential direction for engaging with another adjacent rehabilitating panel, Attaching the plurality of rehabilitating panels to the plurality of supports includes: 21. The method according to any one of items 18 to 20, comprising engaging each of the plurality of rehabilitating panels with the adjacent other rehabilitating panels via the second engagement portion. (Item 22) A method for rehabilitating an inner circumferential surface of an existing tubular structure, comprising: Step 1: virtually dividing the inner circumferential surface into a plurality of divided rehabilitation surfaces arranged along an inner circumferential direction of the existing tubular structure; Step 2: fixing a plurality of supports to one of the plurality of divided rehabilitated surfaces; Step 3: attaching a plurality of rehabilitating panels to the plurality of supports; Step 4: injecting a filler between the divided rehabilitating surfaces and the plurality of rehabilitating panels; Including, The method rehabilitates the inner peripheral surface by repeatedly performing steps 2 to 4 on the plurality of divided rehabilitating surfaces aligned along the inner peripheral direction. (Item 23) The step 4 includes a step of sealing a gap between an edge of the rehabilitated panel and the divided rehabilitated surface before injecting the filler, The step of sealing the gap includes: Placing a soft member in the gap; deforming the soft member using a water-stopping tool to seal the gap; 23. The method according to item 22, comprising: (Item 24) The deformation of the soft member using the water-stopping tool includes: 24. The method according to item 23, comprising pressing the soft member into the gap from both an inner circumferential direction of the tubular structure and an axial direction of the tubular structure with the water-stopping tool. (Item 25) Attaching a plurality of rehabilitating panels to a plurality of supports includes: A rehabilitating panel is disposed in an axial direction of the annular structure; sealing gaps between adjacent rehabilitating panels aligned in an axial direction of the annular structure; Including, Sealing the gap between the adjacent retread panels includes Filling the gaps in the rehabilitated panels with a joint material including a heating wire; The joint material is fused to the adjacent rehabilitated panels by passing an electric current through the heating wire, thereby fixing the adjacent rehabilitated panels to each other. 25. The method according to any one of items 18 to 24, comprising: (Item 26) Item 26. The method according to item 25, wherein the rehabilitating panel is a resin panel that melts due to heat generated by passing an electric current through the heating wire. Effect of the Invention

[0008] According to the present invention, it is possible to obtain a rehabilitation body including a rehabilitation panel fixed onto the inner peripheral surface of an existing tubular structure, which can increase the fixing strength of the rehabilitation panel to the existing tubular structure. Furthermore, it is possible to obtain a rehabilitation method that enables the rehabilitation of an existing tubular structure by using such a rehabilitation body. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing the appearance of a rehabilitating pipe 1000 including a rehabilitating body 100 according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing the internal configuration of a rehabilitating pipe 1000 including the rehabilitating body 100 shown in FIG. [Diagram 3] FIG. 3 is a plan view for explaining a specific structure of the support 120 shown in FIG. [Figure 4] FIG. 4 is a perspective view for explaining various first to fourth panels 110a to 110d constituting the rehabilitating panel 110 shown in FIG. [Diagram 5] FIG. 5 is a perspective view for explaining joint members 30a to 30d corresponding to the first to fourth panels 110a to 110d shown in FIG. [Figure 6] FIG. 6 is a diagram showing a rehabilitated portion 10a (R3 portion) of an existing pipe to which the rehabilitation body 100 shown in FIG. 1 is applied. [Figure 7] FIG. 7 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows a method for connecting a plurality of supports 120. In FIG. [Figure 8] FIG. 8 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows a method for attaching the support tool assembly 1200 shown in FIG. [Figure 9] FIG. 9 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows a state in which a reinforcing sheet 150 is attached to a portion 10a to be rehabilitated of the existing pipe 10. As shown in FIG. [Figure 10] FIG. 10 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows a process of attaching various rehabilitation panels 110a to 110d constituting a rehabilitation panel 110 to a portion to be rehabilitated 10a after a reinforcing sheet 150 is attached. [Figure 11] FIG. 11 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows how a start panel 110a is attached across an adjacent standard support 120a. [Figure 12] FIG. 12 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows a state in which a standard panel 110b is attached adjacent to a start panel 110a so as to straddle an adjacent standard support 120a. [Figure 13]FIG. 13 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows how a corner panel 110d is attached adjacent to a standard panel 110b, straddling the adjacent standard support 120a and corner support 120b. [Figure 14] FIG. 14 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows how a standard panel 110b is attached adjacent to a corner panel 110c, straddling the adjacent corner support 120b and standard support 120a. [Figure 15] FIG. 15 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows how a corner panel 110c is attached adjacent to a standard panel 110b, straddling the adjacent standard support 120a and corner support 120b. [Figure 16] FIG. 16 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows how the end panel 110c is attached across two adjacent standard supports 120a so that it is positioned between the standard panel 110b and the start panel 110a. [Figure 17] Figure 17 is a diagram for explaining a method of rehabilitating an existing pipe 10, and shows how various rehabilitation panels are arranged around the inner surface of the rehabilitated section 10a of the existing pipe 10, and then connecting members 30a, 30b, 30c, and 30d are attached to each rehabilitation panel. [Figure 18] FIG. 18 is a diagram for explaining a method for rehabilitating an existing pipe 10, and shows a process of injecting mortar 130 between the inner peripheral surface of the portion to be rehabilitated 10a of the existing pipe 10 and a plurality of rehabilitation panels 110. [Figure 18A] FIG. 18A is a diagram for explaining a panel holder (restraint member) 50 used in the rehabilitating body 100 of the first embodiment, which prevents the rehabilitating panel from coming off. [Figure 19] FIG. 19 is a diagram for explaining a rehabilitating pipe 2000 including a rehabilitating body 200 according to the second embodiment of the present invention. [Figure 20] FIG. 20 is a diagram for explaining the structure of a fixing tool (support) 140a used in the rehabilitation body 200 shown in FIG. [Figure 21]FIG. 21 is a diagram for explaining the structure of a connection member 160a that connects adjacent fasteners 140a, and shows a contact piece 164 that restricts the release of engagement between the rehabilitating panel 110c and the fasteners 140a. [Figure 22] FIG. 22 is a diagram for explaining a process of attaching the rehabilitating panels 110a, 110b, and 110d to the fixing devices 140a to 140c shown in FIG. [Diagram 23] FIG. 23 is a diagram for explaining a state in which the rehabilitation panels 110a, 110b, and 110d are attached to the fixing devices 140a to 140c shown in FIG. [Figure 24] FIG. 24 is a perspective view for explaining a first step of sealing the portions of the inner circumferential surface of the rehabilitating portion 10a to which the rehabilitating panels 110a, 110b, and 110d are attached. [Diagram 25] FIG. 25 is a perspective view for explaining a second step of sealing the portions of the inner periphery of the rehabilitating portion 10a to which the rehabilitating panels 110a, 110b, and 110d are attached. [Figure 26] Figure 26 is a diagram for explaining a method of dividing the inner surface of the rehabilitated portion 10a into four to form the rehabilitated body 100, and shows the process of completing rehabilitation on the first divided rehabilitation surface S1 of the four divided rehabilitation surfaces S1 to S4 of the inner surface, and placing the fixing device 140a shell 140c and the rehabilitated panels 110b, 110d on the second divided rehabilitation surface S2. [Figure 27] Figure 27 is a diagram for explaining a method of dividing the inner surface of the rehabilitated portion 10a into four to form the rehabilitated body 100, and shows a process of placing fixing devices 140a-140c and rehabilitated panels 110b, 110d on the third divided rehabilitating surface S3 after rehabilitation on the second divided rehabilitating surface S2 is completed, and a process of placing fixing devices 140a-140c and rehabilitated panels 110b-110d on the fourth divided rehabilitating surface S4 after rehabilitation on the third divided rehabilitating surface S3 is completed. [Figure 27A] Figure 27A shows a state in which a joint material including a heating wire has been filled between a rehabilitated panel 110 located on a first divided rehabilitated surface S1 that has been rehabilitated and a rehabilitated panel 110 located on a first divided rehabilitated surface S1 that is in an unrehabilitated state. [Figure 28]FIG. 28 is a diagram for explaining a method of sealing the gap between adjacent rehabilitating panels 110 in the axial direction of the rehabilitated portion 10a at a joint J between adjacent rehabilitating pipes 2001, 2002. [Figure 29] FIG. 29 shows a sealing state of adjacent rehabilitating panels 110 when the axes of adjacent rehabilitating pipes 2001, 2002 shown in FIG. 28 are misaligned. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described below.Unless otherwise specified, it should be understood that the terms used in this specification are used in the sense that they are commonly used in the field.Therefore, unless otherwise defined, all technical terms and scientific and technical terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this invention belongs.In the case of conflict, this specification (including definitions) shall prevail.

[0011] In this specification, the term "about" refers to a range of ±10% of the subsequent number.

[0012] The present invention aims to obtain a rehabilitation body including a rehabilitation panel fixed onto the inner peripheral surface of an existing tubular structure, the rehabilitation body being capable of increasing the fixing strength of the rehabilitation panel to the existing tubular structure, A rehabilitation body for rehabilitating the inner circumferential surface of an existing tubular structure, The rehabilitating body is A plurality of supports; Multiple rehabilitation panels and Equipped with The above problem has been solved by providing a rehabilitation body in which each of the multiple support devices is configured so as to be capable of being fixed to the inner circumferential surface, and each of the multiple support devices is configured so as to be capable of supporting at least one of the multiple rehabilitation panels.

[0013] Therefore, the rehabilitation body of the present invention is intended to rehabilitate the inner surface of an existing tubular structure, and is provided with a plurality of supports that can be fixed to the inner surface of the existing tubular structure, and each of these supports is configured to be able to support at least one of the plurality of rehabilitation panels, so long as the other configurations are not particularly limited.

[0014] (Existing tubular structure) The structure of the inner peripheral surface of the existing tubular structure may be any shape as long as it functions as a flow path for flowing liquid. For example, the inner peripheral surface of the existing tubular structure may have a circular, elliptical, rhombic, parallelogram, polygonal or rectangular shape (hexagonal, octagonal, etc.) as a cross-sectional shape perpendicular to the axial direction. Furthermore, the inner peripheral surface of the existing tubular structure may have a shape such as a horseshoe shape as a cross-sectional shape perpendicular to the axial direction of the tubular structure. Note that the inner peripheral surface of the existing tubular structure having a horseshoe cross-sectional shape does not have an upper surface wall like a U-shaped groove, but here, the structure of the inner peripheral surface of the existing tubular structure also includes such a structure without an upper surface wall.

[0015] The material of the existing tubular structure may be a metal material such as iron or stainless steel, or a concrete material or a resin material. Furthermore, the existing concrete tubular structure may include reinforcing bars, or may include reinforcing materials such as a reinforcing sheet made of metal or resin, or a reinforcing sheet made of carbon fiber.

[0016] Furthermore, the existing tubular structure may be a part of an existing pipe, or may be the entire existing pipe.

[0017] In the following description, a part or all of an existing pipe that is to be rehabilitated is also referred to as a rehabilitated portion of the existing pipe.

[0018] (Rehabilitation) The rehabilitation body rehabilitates the inner surface of an existing tubular structure, and as long as it has a plurality of supports and a plurality of rehabilitation panels, other configurations are not limited and can be arbitrary.

[0019] (Support) The support device supports the rehabilitation panel described below and is fixed to the inner circumferential surface of the existing tubular structure. A plurality of support devices are provided. The plurality of support devices are configured so as to be fixable to the inner circumferential surface of part or all of the existing tubular structure (the portion to be rehabilitated of the existing pipe) and are required to be capable of supporting at least one of the plurality of rehabilitation panels, and other configurations are not limited and may be arbitrary.

[0020] For example, each of the multiple supports preferably includes a support mechanism that supports at least one rehabilitation panel, and an adjustment mechanism that can adjust the distance between the inner peripheral surface of the tubular structure and at least one rehabilitation panel. By providing the above-mentioned adjustment mechanism, even if a part of the inner peripheral surface of the rehabilitated portion of the existing pipe is recessed or protruding, the distance between the inner peripheral surface and each rehabilitation panel can be adjusted to support the surface of the rehabilitation panel so that it is flat, regardless of the unevenness of the inner peripheral surface of the rehabilitated portion of the existing pipe.

[0021] The support mechanism may also have a base fixed to the inner circumferential surface of the existing pipe to be rehabilitated, a first engagement portion for engaging with at least one rehabilitation panel, and a first connection portion for connecting the first engagement portion to the base. With this configuration, it becomes possible to change the relative positions of the base and the first engagement portion and fix them by using, for example, a detachable fastening member at the connection portion between the base and the first engagement portion, and the adjustment mechanism can be easily realized.

[0022] However, the support mechanism may be configured as a single part consisting of a base portion fixed to the inner circumferential surface of the portion to be rehabilitated of the existing pipe and a first engagement portion for engaging with the rehabilitation panel, and may not include the above-mentioned connecting portion (connecting the base portion and the first engagement portion). In this case, the structure of the support mechanism is simplified.

[0023] The first engagement portion may have any shape, structure, etc., as long as it is capable of engaging with at least one rehabilitating panel.

[0024] Furthermore, each of the multiple supports may have a second connecting portion for connecting to another adjacent support. In this way, it is possible to form a support-support assembly by connecting the multiple supports via the second connecting portions. By forming the support-support assembly, it becomes easier to fix the multiple supports to the inner circumferential surface of the rehabilitated portion of the existing pipe. For example, when fixing multiple supports to the inner circumferential surface of the rehabilitated portion of the existing pipe, if the support (the leading support) located at the end of the support-support assembly is positioned relative to the inner circumferential surface of the rehabilitated portion of the existing pipe, the second and subsequent supports of the support-support assembly can be automatically positioned relative to the inner circumferential surface of the rehabilitated portion of the existing pipe because they are connected to the leading support, and the work can be made more efficient.

[0025] However, each of the multiple supports does not have a second connecting portion for connecting to other adjacent supports, and each of the multiple supports may be individually positioned and fixed relative to the inner surface of the existing pipe to be rehabilitated, or the multiple supports may be previously joined together in a structure.

[0026] In this way, by forming a plurality of supports into a support-support-connection body, it is possible to increase the fixing strength of the rehabilitation panel to the inner circumferential surface of the portion of the existing pipe to be rehabilitated.

[0027] Furthermore, it is preferable that the multiple supports are arranged in an annular shape around the inner circumferential surface of the rehabilitated portion of the existing pipe. By arranging the multiple supports in this manner, it is possible to further increase the fixing strength. In addition, the multiple rehabilitating panels arranged along the inner circumferential surface of the rehabilitated portion of the existing pipe can be supported in a distributed manner by the multiple supports, thereby reducing the force applied to each support.

[0028] It is preferable that the multiple supports arranged in a ring are provided at multiple positions along the axial direction of the existing pipe, so that the force supporting the rehabilitation panel can be distributed among more supports, thereby further reducing the force applied to each support.

[0029] The multiple supports may include multiple types of supports having different structures of the first engagement portion. For example, when engaging with a fourth panel, which is a rehabilitation panel used in a corner portion of the inner circumferential surface of a tubular structure described later, it is preferable that the shape of the first engagement portion is different from that of the first to third panels used in other portions.

[0030] This is because the corner portions of the existing pipe to be rehabilitated have inner surfaces that rise from horizontal to vertical, and in such portions it is necessary to change the position of the support tool relative to the rehabilitation panel so that the support tool supports the rehabilitation panel from below, thereby making it difficult for the support tool to come loose from its engagement with the rehabilitation panel.

[0031] Furthermore, in the case of multiple supports, a panel holder (regulating member) is provided at the second connecting portion (portion connecting the supports to each other) of adjacent supports, and this panel holder preferably has an abutment piece that abuts against a rib (e.g., a linear rib) formed on the back side of the rehabilitated panel so as to regulate disengagement of the rehabilitated panel in a state in which the rehabilitated panel is indirectly engaged with a part of another rehabilitated panel (via a linear groove portion that is the second engaging portion) with the engaging portion of the support. If the rehabilitated panel is a type that indirectly engages with the support (third rehabilitated panel), this type of rehabilitated panel is prone to coming off, so it is significant to provide a panel holder having the above-mentioned abutment piece.

[0032] Furthermore, the multiple supports are not limited to the configuration described above, and for example, each of the multiple supports may include a base member, multiple engaging members attached to the base member, and a fixing member for fixing the base member to the inner surface, and each of the multiple engaging members may be a unitized member (fixing device) capable of engaging with any of the multiple rehabilitation panels.

[0033] In this case, a connecting member may be provided between adjacent fastening devices to connect the respective base members to each other, or such a connecting member may not be provided.

[0034] Furthermore, when a connecting member is provided between adjacent fastening devices, the connecting member preferably has an abutment piece that abuts against a rib (e.g., a linear rib) formed on the back surface of the rehabilitating panel so as to restrict disengagement of the rehabilitating panel (third rehabilitating panel) in a state indirectly engaged with the engaging member (through a linear groove portion that is the engaging portion of the other rehabilitating panel).By having such an abutment piece on the connecting member, the third rehabilitating panel that is fixed to the fastening device by indirectly engaging with the engaging member becomes less likely to come off.

[0035] In addition, it is preferable that the fixing device further includes a reinforcing sheet containing carbon fiber, and the reinforcing sheet is provided on a surface of one of the base members that faces the inner peripheral surface. By including such a reinforcing sheet in the fixing device, the strength of the rehabilitated body including the fixing device can be improved.

[0036] (Rehabilitation Panel) Each of the multiple rehabilitation panels preferably includes a second engagement portion for engaging with another adjacent rehabilitation panel at both ends in the inner circumferential direction along the inner circumferential surface of the rehabilitated portion of the existing pipe. In this manner, the multiple rehabilitation panels can be fitted and engaged with adjacent ones without any gaps. As a result, the inner circumferential surface of the rehabilitated portion of the existing pipe can be covered with the multiple rehabilitation panels without any gaps, and it becomes possible to prevent fluid flowing inside the part of the existing pipe where a crack or fissure has formed (the rehabilitated portion) from leaking from the rehabilitated portion.

[0037] Furthermore, the plurality of panels capable of fitting adjacent rehabilitating panels together may include a plurality of types of rehabilitating panels having different structures.

[0038] The plurality of rehabilitating panels having different structures are, for example, four types of panels, first to fourth.

[0039] The first panel is a panel (start panel) that is used when there are no other panels on either side of the area where the panel is to be placed. The second engagement portion included in the first panel has a first groove portion formed at one end in the inner circumferential direction along the inner circumferential surface of the portion to be rehabilitated of the existing pipe, and a second groove portion formed at the other end in the inner circumferential direction.

[0040] The second panel is a panel (standard panel) that is placed on the inner circumferential surface of the rehabilitated portion in such a way that, when the panel is placed on the inner circumferential surface of the rehabilitated portion, there is another panel on one of the two sides of the area in which the panel is placed, and no other panel is present on the other side.

[0041] The second engagement portion included in the second panel has a third groove portion formed at one end in the inner circumferential direction of the portion to be rehabilitated of the existing pipe, and a first protrusion portion formed at the other end in the inner circumferential direction.

[0042] The third panel is a panel that is placed on the inner circumferential surface of the rehabilitated part. It is a panel (end panel) that is used when there are other panels on both sides of the area.

[0043] The second engaging portion included in the third panel has a second protrusion formed at one end in the inner circumferential direction of the portion to be rehabilitated of the existing pipe, and a third protrusion formed at the other end in the inner circumferential direction.

[0044] The first panel, the second panel and the third panel are preferably arranged in a predetermined order in the inner circumferential direction.

[0045] Here, the first protrusion of the second panel is configured to be engageable with the first groove portion of the first panel, the second protrusion of the third panel is configured to be engageable with the second groove portion of the first panel, and the third protrusion of the third panel is configured to be engageable with the third groove portion of the second panel.

[0046] The fourth panel is, for example, a panel (corner panel) that is placed at the corner of the existing pipe, which is a rectangular cylindrical body. This fourth panel has a structure that is bent with the central axis in the axial direction as a fold line so as to fit the shape of the corner of the existing pipe. Therefore, if the inner circumferential shape of the existing pipe is circular, the fourth panel does not need to be used.

[0047] That is, the fourth panel includes a first plate-like piece and a second plate-like piece, and has a bent plate portion in which one long side of the first plate-like piece and one long side of the second plate-like piece are joined so that the surfaces of both plate-like pieces form an obtuse angle, and the second engaging portion included in the fourth panel has a fourth groove portion formed at one end of the bent plate portion in the inner circumferential direction along the inner surface, and a fourth protrusion portion formed at the other end of the bent plate portion in the inner circumferential direction.

[0048] The fourth protrusion of the fourth panel is configured to be engageable with the third groove of the second panel, and the fourth groove of the fourth panel is configured to be engageable with the first protrusion of the second panel.

[0049] Here, the grooves and protrusions are configured to fit together by placing one panel adjacent to the other panel and inserting the protrusion of one panel into the groove of the other panel. However, the structure of the panels that allows adjacent panels to fit together without gaps is not limited, and may be a structure other than the structures of the first to fourth panels described above.

[0050] Furthermore, it is preferable that the above-mentioned various panels have ribs embedded in the filler injected between the rehabilitated portion of the existing pipe and the rehabilitating panel. This has the effect that the rehabilitating panel is less likely to come out of the filler by the ribs, which are part of the rehabilitating panel, being embedded in the filler injected between the rehabilitated portion of the existing pipe and the rehabilitating panel, and thus the fixing strength can be further improved. Also, the above-mentioned ribs may be used as a part that engages with the first engagement part of the support.

[0051] The materials of each of the multiple rehabilitating panels may be any material. For example, the panels may be made of metal or resin such as PVC (polyvinyl chloride), PE (polyethylene), or PP (polypropylene). The rehabilitating panels may also contain glass fiber or carbon fiber to increase their strength.

[0052] Furthermore, the shape of each of the multiple rehabilitating panels is not limited, but each of the multiple rehabilitating panels may have, for example, a rectangular (strip-like) shape. In this case, the multiple rehabilitating panels are arranged so that the long side of the rectangle extends along the axial direction of the tubular structure, and the short side of the rectangle extends along the inner circumferential direction along the inner circumferential surface. Here, The size of the rectangle for each of the plurality of rehabilitating panels is the same, but may be different. The size of the rectangle for each of the plurality of rehabilitating panels may be different in width, may be different in length, or may be different in both width and length.

[0053] For example, in one embodiment, the size of the rectangular rehabilitation panel is a strip with a short side length of about 50 mm to about 200 mm and a long side length of about 2500 mm to about 3000 mm. By using such a size and shape, a rehabilitation panel can be selected according to changes in the size of the existing pipe, and it becomes possible to accommodate existing pipes of any size.

[0054] Furthermore, in the present invention, the rehabilitated body may be one in which gaps between adjacent rehabilitated panels arranged in the axial direction of the tubular structure among a plurality of rehabilitated panels are sealed with a joint material including an electric heating wire. In this case, the rehabilitated body has a structure that can easily achieve high sealing performance by fusing the joint material filled in the gaps to the rehabilitated panels by passing electricity through the electric heating wire.

[0055] In addition, a reinforcing plate containing carbon fiber or the like may be adhered to the inner peripheral surface of the portion of the existing pipe to be rehabilitated, thereby increasing the strength of the portion of the existing pipe to be rehabilitated. (filling material) Here, the filler is generally mortar made by mixing cement, water, and sand. However, the filler is not limited to mortar, and may be concrete made by mixing cement, water, and sand with gravel, or may be resin mortar made by mixing mortar with a resin admixture.

[0056] The method (rehabilitation method) of constructing the inner surface of an existing tubular structure using the above-mentioned supports, rehabilitation panels, and filler material includes fixing supports to the inner surface and attaching rehabilitation panels to the fixed supports, and the other steps are not limited and can be arbitrary.

[0057] For example, in this rehabilitation method, after fixing supports and attaching rehabilitation panels around the entire circumference of the rehabilitated portion of the existing tubular structure (the portion of the existing tubular structure to be rehabilitated), a filler material may be injected between the rehabilitated panel and the inner circumferential surface. Alternatively, in this rehabilitation method, the fixing of supports, the attachment of rehabilitation panels, and the injection of filler material may be repeated for each of a plurality of divided rehabilitation surfaces (areas of the inner circumferential surface obtained by virtually dividing the inner circumferential surface of the rehabilitated portion of the existing tubular structure in the inner circumferential direction) arranged in order along the inner circumferential direction, thereby rehabilitating the entire circumference of the rehabilitated portion.

[0058] In the present invention, a method for rehabilitating an inner peripheral surface of an existing tubular structure includes a plurality of steps, at least Step 1: virtually dividing an inner peripheral surface into a plurality of divided rehabilitation surfaces arranged along an inner peripheral direction of an existing tubular structure; Step 2: fixing a plurality of supports to one of the plurality of divided rehabilitated surfaces; Step 3: attaching a plurality of rehabilitated panels to a plurality of supports; Step 4: Injecting filler between the split refurbished surface and the multiple refurbished panels. Including, It is sufficient that steps 2 to 4 are repeatedly performed on a plurality of divided rehabilitating surfaces aligned along the inner circumferential direction to rehabilitate the inner circumferential surface, and other steps may be included.

[0059] Furthermore, step 4 may include a step of sealing the gap between the edge of the rehabilitated panel and the divided rehabilitated surface before filling with the filler.

[0060] Furthermore, the step of sealing the gap may include placing a soft member (soft resin) in the gap, and pressing the soft member against the gap with a jig to deform the soft member and seal the gap.

[0061] By using the soft member and the jig in this way, the work of sealing the gap between the divided rehabilitated surface and the edges of the multiple rehabilitated panels can be easily performed. In addition, after the work of injecting the filler between the divided rehabilitated surface and the multiple rehabilitated panels is completed, the sealed portion can be removed easily and cleanly without producing any plaster chips or the like.

[0062] Here, when the soft member is pressed into the gaps between the divided rehabilitating surface and the edges of the rehabilitating panels with a jig, it is preferable to press the soft member into the gaps from both the inner circumferential direction and the axial direction of the tubular structure. By pressing the soft member into the gaps from two directions in this way, the gaps can be more reliably closed.

[0063] For example, the soft member that is the sealing member may be a soft resin (for example, a rubber-based material such as thermoplastic elastomer resin, urethane rubber, or silicone rubber).

[0064] Furthermore, when rehabilitating panels are arranged on the inner surface of an existing tubular structure in the axial direction of the tubular structure, the gaps between adjacent rehabilitating panels in the axial direction of the annular structure are sealed. In this case, it is preferable to fix adjacent rehabilitated panels to each other by filling the gaps between the rehabilitated panels with a joint material containing an electric heating wire and fusing the joint material to the adjacent rehabilitated panels by passing electricity through the electric heating wire.

[0065] In this way, by filling the gaps between adjacent rehabilitated panels in the axial direction of the annular structure with a joint material containing an electric heating wire and passing an electric current through the electric heating wire to fuse the joint material to the adjacent rehabilitated panels, even if the central axes of the rehabilitated parts of the opposing existing pipes are misaligned at the joints of the adjacent existing pipes due to seismic motion, the gap between the rehabilitated panel in one of the adjacent existing pipes and the rehabilitated panel in the other of the adjacent existing pipes can be kept sealed with the joint material. This makes it possible to avoid damage to the seal in the gap between the rehabilitated part of one existing pipe and the rehabilitated part of the other existing pipe due to misalignment between the central axis of the rehabilitated part of one existing pipe and the central axis of the rehabilitated part of the other existing pipe at the joints of the adjacent existing pipes.

[0066] In addition, it is preferable that the rehabilitating panel is a resin panel. In this way, heat generated by passing electricity through the heat wire of the joint material is transmitted to the resin panel, and part of the resin panel is also melted, making it possible to firmly join the panels.

[0067] In the following embodiment, the rehabilitating body applied to the inner circumferential surface of the existing tubular structure includes four types of rehabilitating panels, uses multiple types of supports as supports, and uses mortar as a filler. However, the present invention is not limited to this.

[0068] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0069] (Embodiment 1) FIG. 1 is a perspective view showing the appearance of a rehabilitating pipe 1000 including a rehabilitating body 100 according to a first embodiment of the present invention.

[0070] This rehabilitating pipe 1000 includes a rehabilitated section 10a of an existing pipe (not shown) that is to be rehabilitated, and a rehabilitating body 100 arranged to cover the inner circumferential surface of the rehabilitating section 10a. The rehabilitating body 100 includes a plurality of rehabilitating panels 110 arranged along the inner circumferential surface of the rehabilitating section 10a, and a plurality of supports 120 that support the plurality of rehabilitating panels 110. Here, the plurality of supports 120 are fixed to the inner circumferential surface of the rehabilitating section 10a. The rehabilitating body 100 is further firmly fixed to the inner circumferential surface of the rehabilitating section 10a by a filler 130.

[0071] Figure 2 is an oblique view showing the internal configuration of the rehabilitated pipe 1000 shown in Figure 1, where Figure 2(a) shows the structure of the rehabilitated pipe 1000 by looking through the rehabilitated portion 10a and the filler material 130, Figure 2(b) shows an enlarged view of the bottom portion (R1 portion) of the rehabilitated portion 10a in Figure 2(a), and Figure 2(c) shows an enlarged view of the corner portion (R2 portion) of the rehabilitated portion 10a in Figure 2(a).

[0072] In this rehabilitation pipe 1000, a plurality of supports 120 are arranged in a ring shape around one circumference of the inner surface of the rehabilitated section 10a of the existing pipe, and further, groups of a plurality of supports 120 arranged in a ring shape in this manner are arranged in multiple rows at predetermined intervals in the axial direction (axial direction) of the existing pipe 10.

[0073] Here, a plurality of rehabilitation panels 110 (first to fourth panels 110a to 110d of different types) are attached to a plurality of supports 120, and these panels 110a to 110d are arranged along the inner circumferential direction of the rehabilitated portion 10a of the existing pipe and also arranged in the axial direction of the rehabilitated portion 10a of the existing pipe. In the following description, when it is necessary to distinguish between the four types of panels, they will be referred to as the first to fourth panels 110a to 110d, and when it is not necessary to distinguish between the four types of panels, they will be simply referred to as rehabilitation panels 110.

[0074] The multiple supports 120 include two types of supports: standard supports 120a and corner supports 120b, where the corner supports 120b are supports used only in corner portions of the rehabilitated portion 10a of the existing pipe, and the standard supports 120a are supports used not only in corner portions of the rehabilitated portion 10a but also in other portions. In the following description, when it is necessary to distinguish between the two types of supports, they will be referred to as standard supports 120a and corner supports 120b, and when it is not necessary to distinguish between the two types of supports, they will be simply referred to as supports 120.

[0075] Figure 3 is a plan view for explaining the specific structure of the support 120 shown in Figure 2, where Figure 3(a) shows a standard support 120a, Figure 3(b) shows the standard support 120a with the fixing screw 23a removed, Figure 3(c) shows the standard support 120a shown in Figure 3(a) in an extended state, Figure 3(d) shows a corner support 120b, Figure 3(e) shows the corner support 120b with the fixing screw 23b removed, and Figure 3(f) shows the corner support 120b shown in Figure 3(d) in an extended state.

[0076] (First support 120a) 3(a), the standard support tool (first support tool) 120a includes a panel engagement part (first engagement part) 22a that engages with the rehabilitating panel 110, a base part 21a that is fixed to the inner peripheral surface of the rehabilitated part 10a, and a component connection part (first connection part) 23a that slidably connects the panel engagement part 22a to the base part 21a so that the gap between the rehabilitating panel 110 and the inner surface of the rehabilitated part 10a can be adjusted. Here, the base part 21a, the panel engagement part 22a, and the component connection part 23a form a support mechanism that supports the rehabilitating panel 110. Here, a fastening member such as a fixing screw that fastens the panel engagement part 22a to the base part 21a is used for the component connection part 23a. When the fastening member 23a is loosened, the panel engagement portion 22a becomes slidable relative to the base portion 21a, making it possible to extend or retract the standard support 120a (see Figs. 3(a) and (c)). Therefore, the adjustment mechanism capable of adjusting the distance between the inner peripheral surface of the rehabilitated portion 10a and the rehabilitated panel 110 is also composed of the base portion 21a, the panel engagement portion 22a, and the component connection portion 23a. In the figure, the adjustment mechanism shows adjustment by sliding, but the present invention is not limited to this. For example, the length may be adjusted by replacing the panel engagement portion 22a with one having a different length.

[0077] Here, as shown in FIG. 3(b), the base 21a has an L-shaped main body plate 211a fixed to the inner surface of the rehabilitated portion 10a with an anchor bolt or the like, and a slide guide 212a attached to the main body plate 211a. The slide guide 212a is a member that regulates the direction in which the panel engagement portion 22a slides relative to the base 21a in the height direction of the standard support 120a. The main body plate 211a and the slide guide 212a are formed of a metal, for example, a plate-like member made of iron or stainless steel. The main body plate 211a of the base 21a has a structure in which the lower part of a rectangular plate-like member is bent at a predetermined angle (for example, at a right angle). A screw insertion hole 1a is formed in the main body plate 211a.

[0078] As shown in FIG. 3(b), the panel engagement portion 22a has a vertically long sliding plate portion 221a that slides relative to the base portion 21a, a pair of left and right arm portions 222a formed on both sides of the upper portion of the sliding plate portion 221a, an appliance connecting portion (second connecting portion) 223a formed at the tip of each of the arm portions 222a, and an engagement piece 224a formed at the upper end of the sliding plate portion 221a.

[0079] Here, a vertically long screw insertion slot 2a is formed in the vertically long slide plate portion 221a, and the tool connecting portion (second connecting portion) 223a is a portion for connecting adjacent supports to each other, and a connecting hole 3a for passing a connecting screw is formed in the center of the tool connecting portion 223a. do.

[0080] Furthermore, an engagement recess 4a1 is formed at the base of the engagement piece 224a, which engages with an engagement protrusion formed on a portion of the first to third panels 110a to 110c, and an engagement hook piece 4a2 is formed at the tip of the engagement piece 224a, which engages with the tip of a protrusion (bank portions 101c, 102c, 103c, 104c) (see Figure 4) formed on a portion of the first to third panels 110a to 110c.

[0081] (Second support 120b) As shown in FIG. 3(d), the corner support 120b is also provided with a panel engagement portion (first engagement portion) 22b, a base 21b, and a component connection portion (first connection portion) 23b, similar to the standard support 120a. When the component connection portion 23b is loosened, the panel engagement portion 22b becomes slidable relative to the base 21b, and the standard support 120b can be extended or contracted (see FIGS. 3(d) and 3(f)). Here, the base 21b, the panel engagement portion 22b, and the component connection portion 23b constitute a support mechanism that supports the rehabilitated panel 110. Here, the component connection portion 23b uses a fastening member such as a fixing screw that fastens the panel engagement portion 22b to the base 21b. In addition, an adjustment mechanism that can adjust the distance between the inner circumferential surface of the rehabilitated portion 10b and the rehabilitated panel 110 is also constituted by the base 21b, the panel engagement portion 22b, and the component connection portion 23b.

[0082] As shown in Fig. 3(e), the base 21b of this corner support 120b has an L-shaped main body plate portion 211b and a slide guide 212b. Here, the base 21b is the same as the base 21a in the standard support 120a, and the main body plate portion 211b is formed with a screw insertion hole 1b.

[0083] Like the panel engagement portion 22a of the standard support 120a, the panel engagement portion 22b of the corner support 120b has a vertically long slide plate portion 221b, a pair of left and right arm portions 222b, a connecting portion 223b, and an engagement portion 224b.

[0084] Here, the sliding plate portion 221b, the arm portion 222b, and the connecting portion 223b are the same as those in the standard support 120a, and the vertically long sliding plate portion 221b has a vertically long screw insertion hole 2b formed therein, and the tool connecting portion 223b has a connecting hole 3b formed in the center thereof for passing a connecting screw therethrough.

[0085] In the panel engagement portion 22b of the corner support 120b, an engagement recess 4b1 is formed at the base of the engagement piece 224b, which engages with an engagement protrusion formed on a portion of the first to third panels 110a to 110c, but the engagement hook piece 4a2 of the engagement piece 224a of the standard support 120a is not formed at the tip of the engagement portion 224b.

[0086] Figure 4 is an oblique view for explaining the various panels 110a to 110d that make up the rehabilitation panel 110 shown in Figure 2, where Figure 4(a) shows the appearance of the start panel 110a, Figure 4(b) shows the appearance of the standard panel 110b, Figure 4(c) shows the appearance of the end panel 110c, and Figure 4(d) shows the appearance of the corner panel 110d.

[0087] (First panel 110a) The first panel 110a is a start panel 110a, and the area in which this panel is to be placed is an area in which no other panels exist on either side of the placement area.

[0088] As shown in FIG. 4A, the first panel (start panel) 110a has a top plate portion (approximately a rectangular plate portion) 106a and a first linear groove portion formed along one long side of the top plate portion 106a. The top plate portion 106a has a (first groove portion) 101 and a second linear groove portion (second groove portion) 102 formed along the other long side of the top plate portion 106a. Here, the top plate portion 106a has a rectangular plate shape, and linear ribs 105 extending downward are arranged on the lower surface of the top plate portion 106a so as to face each other across the central axis in the axial direction of the top plate portion 106a. The linear ribs 105 are thicker at the bottom end than in the other parts, and have a structure in which the linear ribs 105 are unlikely to come out of the mortar when embedded in the mortar.

[0089] The first groove 101 provided in the start panel 110a is composed of a side wall 101d formed along one long side of the top panel 106a, a bank 101c facing the side wall 101d, and a bottom 101e located between the side wall 101d and the bank 101c. An outer linear protrusion 101a that fits into the engagement recess 4a1 of the standard support 120a is formed on one edge (panel outer edge) of the bottom 101e, and an inner linear protrusion 101b that fits into the engagement recess 4b1 of the corner support 120b is formed on the other edge (panel inner edge) of the bottom 101e. The first groove 101 is designed so that the engagement hook piece 4a2 of the standard support 120a is engaged with the upper end of the bank 101c.

[0090] The second groove 102 provided in the start panel 110a is composed of a side wall 102d formed along one long side of the top panel 106a, a bank 102c facing the side wall 102d, and a bottom 102e located between the side wall 102d and the bank 102c. An outer linear protrusion 102a that fits into the engagement recess 4a1 of the standard support 120a is formed on one edge (panel outer edge) of the bottom 102e, and an inner linear protrusion 102b that fits into the engagement recess 4b1 of the corner support 120b is formed on the other edge (panel inner edge) of the bottom 102e. The second groove 102 is adapted so that the engagement hook piece 4a2 of the standard support 120a is engaged with the upper end of the bank 102c.

[0091] (Second panel 110b) The second panel 110b is a standard panel 110b, and the area in which this panel is to be placed is an area in which other panels exist on only one side of the placement area.

[0092] As shown in Fig. 4(b), the second panel (standard panel) 110b has a top panel (approximately rectangular plate) 106b, a third linear groove (third groove) 103 formed along one long side of the top panel 106b, and a first linear protrusion (first protrusion) 111 formed along the other long side of the top panel 106b, and the first protrusion 111 is configured to be able to fit into any of the first groove 101 and the second groove 102 of the start panel 110a, the third groove 103 of the other standard panel 110b, and the fourth groove 104 of the corner panel 110d. Here, the top panel 106b has a rectangular plate shape, and a linear rib 105 similar to that in the start panel 110a is arranged on the lower surface of the top panel 106b. The first protrusion 111 is a side wall portion that extends downward from the top plate portion 106b.

[0093] The third groove 103 provided in the standard panel 110b is composed of a side wall 103d formed along one long side of the top plate 106b, a bank 103c facing the side wall 103d, and a bottom 103e located between the side wall 103d and the bank 103c. An outer linear protrusion 103a that fits into the engagement recess 4a1 of the standard support 120a is formed on one edge (panel outer edge) of the bottom 103e, and an inner linear protrusion 103b that fits into the engagement recess 4b1 of the corner support 120b is formed on the other edge (panel inner edge) of the bottom 103e. The third groove 103 is adapted so that the engagement hook piece 4a2 of the standard support 120a is engaged with the upper end of the bank 103c.

[0094] (Third panel 110c) The third panel 110c is an end panel 110c, and the area in which this panel is to be placed A placement area is an area on either side of which other panels exist.

[0095] As shown in Fig. 4(c), the third panel (end panel) 110c has a top panel (strip-shaped plate) 106c, a second linear protrusion (second protrusion) 112 formed on one side of the top panel 106c along the long side, and a third linear protrusion (third protrusion) 113 formed on the other side of the top panel 106c along the long side, and each of the second protrusion 112 and the third protrusion 113 is configured to be able to fit into each of the first groove 101, the second groove 102, the third groove 103, and the fourth groove 104. Here, the top panel 106c has a strip-shaped plate shape, and a linear rib 105 similar to that in the start panel 110a is arranged on the lower surface of the top panel 106c. The second protrusion 112 and the third protrusion 113 form side walls extending downward from the top plate portion 106c.

[0096] (fourth panel 110d) The fourth panel 110d is a corner panel 110d, and the area in which this panel is arranged is a corner portion of the rehabilitating portion 10a, an area in which other panels exist only on one side of the area in which this panel is arranged.

[0097] As shown in Fig. 4(d), the fourth panel (corner panel) 110d includes a bent plate portion as a top plate portion 106d. The top plate portion 106d includes a top plate piece (first rectangular plate piece) 116d and a top plate piece (second rectangular plate piece) 126d, and one long side of the top plate piece 116d and one long side of the top plate piece 126d are joined together so that the surfaces of both top plate pieces 116d and 126d form an obtuse angle (approximately 135°). Furthermore, the corner panel 110d has a fourth linear groove (fourth groove) 104 formed along the other long side of the top plate piece 116d and a fourth linear protrusion (fourth protrusion) 114 formed along the other long side of the top plate piece 126c, and the fourth protrusion 114 is configured to be able to fit into any of the first groove 101 and the second groove 102 of the start panel 110a, the third groove 103 of the standard panel 110b, and the fourth groove 104 of the other corner panel 110c. Here, both top plate pieces 116d and 126d constituting the top plate part 106d have a rectangular plate shape, and linear ribs 105 similar to those in the start panel 110a are arranged on the lower surfaces of both top plate pieces 116d and 126d. Moreover, the fourth protrusion 114 serves as a side wall portion extending downward from the top plate portion 106c.

[0098] The fourth groove 104 provided in the corner panel 110d is composed of a side wall 104d formed along one long side of the top panel 106d, a bank 104c facing the side wall 104d, and a bottom surface 104e located between the side wall 104d and the bank 104c. An outer linear protrusion 104a that fits into the engagement recess 4a1 of the standard support 120a is formed on one edge (panel outer edge) of the bottom surface 104e, and an inner linear protrusion 104b that fits into the engagement recess 4b1 of the corner support 120b is formed on the other edge (panel inner edge) of the bottom surface 104e. The fourth groove 104 is adapted to have the engagement hook piece 4a2 of the standard support 120a engage with the upper end of the bank 104c.

[0099] The four types of panels described above are formed by extrusion molding of resin, with the main body being made of polypropylene containing glass fiber to increase strength, and the surface of the top plate portion 106a being coated with polypropylene.

[0100] Furthermore, in order to further increase the strength of start panel 110a, end panel 110d, and corner panel 110c, the central portion of the top panel may be sandwiched between metal plates from above and below, and the upper and lower metal plates may be fastened to the top panel by bolts and nuts.

[0101] (Connecting parts) A plurality of types of joint members may be used to connect the panels without gaps in the axial direction of the rehabilitating pipe 1000. Here, each of the plurality of types of joint members has a structure corresponding to each of the four types of panels described above.

[0102] FIG. 5 is a perspective view for explaining joint members 30a to 30d corresponding to the various panels 110a to 110d shown in FIG.

[0103] (Joint member 30a) In other words, the first connecting member 30a is a member for connecting the ends of adjacent panels without any gaps when the start panel 110a is arranged in its axial direction, and is structured to be able to accommodate the end of the start panel 110a.

[0104] Fig. 5(a) shows the structure of the first joint member 30a as viewed from the Z direction in Fig. 4(a), Fig. 5(b) shows the structure of the first joint member 30a as viewed from the Y direction in Fig. 4(a), and Fig. 5(c) shows the structure in a cross section taken along line Xa-Xa in Fig. 5(a). Note that the structure of the first joint member 30a as viewed from the Y' direction in Fig. 4(a) is the same as the structure shown in Fig. 5(b).

[0105] Here, the first joint member 30a is structured so as to be attachable to the end portion of the starter panel 110a.

[0106] That is, the first joint member 30a has a top plate accommodating portion 31a that accommodates the end of the top plate portion 106a of the start panel 110a, a first groove accommodating portion 32a that accommodates the end of the first groove portion 101, a second groove accommodating portion 33a that accommodates the end of the second groove portion 102, and rib accommodating portions 34a, 35a that accommodate the end of the linear rib 105. Furthermore, linear protrusions 36a, 37a are formed on both end faces in the width direction (left-right direction on the paper) of the first joint member 30a so as to extend from the top plate accommodating portion 31a toward the bottom faces of the groove accommodating portions 32a, 33a, respectively, and the linear protrusions 36a, 37a are in close contact with the end faces of the side wall portions 101d, 102d of the start panel 110a.

[0107] (Joint member 30b) Fig. 5(d) shows the structure of the second joint member 30b as viewed from the Z direction in Fig. 4(b), Fig. 5(e) shows the structure of the second joint member 30b as viewed from the Y' direction in Fig. 4(b), and Fig. 5(f) shows the structure of the cross section taken along line Xb-Xb in Fig. 5(d). Note that the structure of the second joint member 30b as viewed from the Y direction in Fig. 4(b) is the same as the structure shown in Fig. 5(b).

[0108] The second joint member 30b is structured to be able to accommodate the end of the standard panel 110b.

[0109] That is, the second joint member 30b has a top plate accommodating portion 31b that accommodates an end of the top plate portion 106b of the standard panel 110b, a groove accommodating portion 32b that accommodates an end of the third groove portion 103 of the standard panel 110b, and rib accommodating portions 34b, 35b that accommodate ends of the linear ribs 105. Furthermore, on one end face in the width direction (left-right direction on the paper) of the second joint member 30b, a linear protrusion 36b is formed so as to extend from the top plate accommodating portion 31b toward the bottom face of the groove accommodating portion 32b, and this linear protrusion 36b serves as an adhesive portion that adheres to the end face of the side wall portion 103d of the standard panel 110b.

[0110] On the other end face of the second connecting member 30b in the width direction (left and right direction on the paper), a rectangular pillar piece 37b is formed extending downward from the top board accommodation portion 31b, and this rectangular pillar piece 37b serves as a contact portion that is in close contact with the end face of the side wall portion 111 of the standard panel 110b.

[0111] (Joint member 30c) Fig. 5(g) shows the structure of the third joint member 30c as viewed from the Z direction in Fig. 4(c), and Fig. 5(h) shows the structure in a cross section taken along line Xc-Xc in Fig. 5(g). Note that the structure of the third joint member 30c as viewed from the Y direction or Y' direction in Fig. 4(c) is the same as the structure shown in Fig. 5(e).

[0112] The third joint member 30c is structured to be able to accommodate the end of the end panel 110c.

[0113] That is, the third joint member 30c has a top plate accommodating portion 31c that accommodates an end of the top plate portion 106c of the end panel 110c, and rib accommodating portions 34c, 35c that accommodate ends of the linear ribs 105. Furthermore, on both end faces in the width direction (left-right direction on the paper) of the third joint member 30c, rectangular column pieces 36c, 37c are formed to extend downward from the top plate accommodating portion 31c, and these rectangular column pieces 36c, 37c serve as contact portions that come into close contact with the end faces of the side wall portions 112, 113 of the end panel 110c.

[0114] (Joint member 30d) Figure 5(i) shows the structure of the fourth joint member 30d when viewed from the Z direction of Figure 4(d), Figure 5(j) shows the structure of the fourth joint member 30d when viewed from the Y direction of Figure 4(d), Figure 5(k) shows the structure of the fourth joint member 30d when viewed from the Y' direction of Figure 4(d), and Figure 5(l) shows the structure along the Xd-Xd line cross section of Figure 5(i).

[0115] The fourth joint member 30d is structured so as to be able to accommodate the end portion of the corner panel 110c.

[0116] That is, the fourth joint member 30d has a top plate accommodating portion 31d that accommodates an end of the top plate portion 106d of the corner panel 110d, a groove accommodating portion 32d that accommodates an end of the fourth groove portion 104 of the corner panel 110d, and rib accommodating portions 34d, 35d that accommodate ends of the linear rib 105. Furthermore, on one end face in the width direction (left-right direction on the paper) of the fourth joint member 30d, a linear protrusion 36d is formed so as to extend from the top plate accommodating portion 31d toward the bottom face of the groove accommodating portion 32d, and this linear protrusion 36d serves as an adhesive portion that adheres to the end face of the side wall portion 104d of the corner panel 110d.

[0117] On the other end face of the fourth connecting member 30d in the width direction (left-right direction on the paper), a rectangular pillar piece 37d is formed extending diagonally downward from the top plate accommodating portion 31d, and this rectangular pillar piece 37d forms an adhesive portion that adheres to the end face of the side wall portion 114 of the corner panel 110d.

[0118] Although polyethylene is used as the material for the above-mentioned joint members 30a to 30d, polypropylene, which is a resin material other than polyethylene, or rubber or other materials may also be used.

[0119] In addition, in the rehabilitating body 100 used in the rehabilitating pipe 1000 of embodiment 1, several types of connecting members for connecting the panels without gaps in the axial direction have been described, including a type that is fitted into the ends of the panels, but the connecting members may also be sealing materials that are fitted between adjacent panels to fill the gaps.

[0120] Next, a method for rehabilitating the rehabilitated portion 10a of the existing pipe 10 will be described.

[0121] The portion to be rehabilitated 10a of the existing pipe 10 is a portion to be rehabilitated of an existing pipe, such as a sewer pipe, which is an example of an existing tubular structure.

[0122] In the following explanation of the rehabilitation method, it is assumed that the existing pipe is a sewer pipe buried underground.

[0123] Figures 6 to 18 are diagrams for explaining this rehabilitation method. Figure 6 is a diagram showing a sewer pipe buried in the ground as an existing pipe 10 to which the rehabilitation body 100 of the first embodiment shown in Figure 1 is applied, where Figure 6(a) shows the existing pipe 10 buried in the ground, and Figure 6(b) shows an enlarged view of the structure of a rehabilitated portion 10a of the existing pipe 10 that is the target of rehabilitation.

[0124] Specifically, a portion of the existing pipe 10 (portion R3 in FIG. 6(a)) is damaged due to deterioration or other reasons, and this portion is treated as a rehabilitated portion 10a that is the target of the rehabilitation process, and the existing pipe 10 is rehabilitated.

[0125] (Formation of support tool connector 1200) First, in order to improve the efficiency of operations such as aligning the multiple supports 120, a support assembly 1200 is formed in advance by connecting the multiple supports 120 to be attached to the inner surface of the rehabilitated portion 10a.

[0126] FIG. 7(a) shows a method for connecting a plurality of supports 120 used in the rehabilitation method, and FIG. 7(b) shows a support-support assembly 1200 obtained by connecting a plurality of supports.

[0127] For example, when connecting adjacent standard supports 120a, a connecting screw 6a is inserted into a connecting hole 3a formed in the device connecting portion (second connecting portion) 223a of the standard supports 120a, and the connecting portions 223a of the standard supports 120a are fixed together with the connecting screw 6a and the connecting nut 6b. In this manner, the standard supports 120a are connected in sequence to form a support connection body 1200.

[0128] In the portion where the start panel 110a is arranged (R4 portion in FIG. 7), adjacent standard supports 120a are connected so that their respective engagement hook pieces 4a2 face each other. In the portion where the corner panel 110c is arranged (R5 portion in FIG. 7), the corner support 120b is connected to the last standard support 120a of the multiple standard supports 120a already connected so that the engagement recess 4a1 of the standard support 120a and the engagement recess 4b1 of the corner support 120b face each other (see FIGS. 7(a) and 7(b)). Here, if the number of supports 120 to be connected is set to one circumference of the inner circumferential surface of the rehabilitated portion 10a, it may become too long and difficult to handle, so the number of supports 120 to be connected is set to be about 1 / 4 of the inner circumference according to the size of the existing pipe to be rehabilitated, for example.

[0129] (Installation of the support connector 1200) Next, the support tool connecting body 1200 is attached to the inner peripheral surface of the portion 10 a to be rehabilitated of the existing pipe 10 .

[0130] Figure 8(a) shows a method of attaching the support tool connecting body 1200 shown in Figure 7 to the rehabilitated portion 10a of the existing pipe 10, and Figure 8(b) shows the state in which the support tool connecting body 1200 is attached to the inner surface of the rehabilitated portion 10a.

[0131] As shown in Fig. 8(a), the supports 120 are fixed to the inner circumferential surface of the rehabilitated portion 10a of the existing pipe in order, starting from the standard support 120a at one end of the support-support-connected body 1200, using fixing members such as anchor bolts (not shown). When the fixing of all the supports 120 of one support-support-connected body 1200 is completed, the next support-support-connected body 1200 is fixed to fix the supports 120 all around the inner circumferential surface of the rehabilitated portion 10a. Furthermore, the positions at which the supports 120 are fixed are shifted along the central axis of the rehabilitated portion 10a, and the supports 120 are fixed in the same manner all around the inner surface of the rehabilitated portion 10a. By repeating this operation, the supports 120 are attached to the entire inner surface of the rehabilitated portion 10a, as shown in Fig. 8(b).

[0132] (Attachment of reinforcing sheet 150) Thereafter, in some cases, the reinforcing sheet 150 may be attached to the inner circumferential surface of the rehabilitated portion 10a via an appropriate fixing means such as an adhesive member or a fastening member. At this time, since a plurality of rows of the supports 120 are formed on the inner circumferential surface of the rehabilitated portion 10a, each row being aligned along the inner circumferential direction, the reinforcing sheet 150 is disposed between adjacent rows. Here, for example, a sheet-like member made of woven resin fibers or a sheet-like member made of woven carbon fibers is used as the reinforcing sheet 150. By attaching this reinforcing sheet to the inner circumferential surface of the rehabilitated portion 10a, the strength of the rehabilitated pipe can be further increased.

[0133] FIG. 9 shows a state in which a reinforcing sheet 150 is attached to the inner circumferential surface of the rehabilitated portion 10a.

[0134] (Installation of panels constituting the rehabilitating panel 110) FIG. 10 shows a state in which the panels 110a, 110b, 110c, and 110d that constitute the rehabilitation panel 110 are attached to the supports after the reinforcing sheet 150 has been attached.

[0135] 10, one start panel 110a is located at the center of the bottom surface, the centers of both sides, and the center of the ceiling surface of the rehabilitated portion 10a of the existing pipe. For example, five standard panels 110b, two corner panels 110c, and one end panel 110d are arranged between the start panel 110a located at the center of the bottom surface of the rehabilitated portion 10a and the start panel 110a located at the center of the side surface of the rehabilitated portion 10a (left side of the paper).

[0136] Although not shown, standard panels 110b, corner panels 110c, and end panels 110d are arranged in a similar arrangement pattern between the start panel 110a located in the center of the side of the rehabilitated part 10a (left side of the paper) and the start panel located in the center of the top surface of the rehabilitated part 10a, between the start panel located in the center of the top surface of the rehabilitated part 10a and the start panel located in the center of the side of the rehabilitated part 10a (right side of the paper), and further between the start panel located in the center of the side of the rehabilitated part 10a (right side of the paper) and the start panel 110a located in the center of the bottom surface of the rehabilitated part 10a.

[0137] The procedure for attaching various panels to the supports 120a and 120b so as to achieve such an arrangement pattern will now be described.

[0138] (Installation of start panel 110a) FIG. 11(a) shows how the start panel (first panel) 110a is attached across an adjacent standard support 120a, and FIG. 11(b) shows the start panel 110a attached to the adjacent standard support 120a with the engagement recesses 4a1 facing each other.

[0139] For example, as shown in FIG. 11(a), the start panel 110a is slid from the rear of the page to the front of the page in FIG. 11(a) (or slid from the front of the page to the rear of the page in FIG. 11(a)) and attached by inserting it between two standard supports 120a that are arranged so that their engaging recesses 4a1 face each other in the center of the bottom surface of the rehabilitated portion 10a.

[0140] At this time, the outer linear protrusion 101a of the first groove portion 101 of the start panel 110a fits into the engagement recess 4a1 of the left standard support 120a of the adjacent standard supports 120a, and the engagement hook piece 4a2 of the left standard support 120a engages with the upper end of the bank portion 101c of the first groove portion 101 of the start panel 110a. The outer linear projection 102a of the second groove 102 of the start panel 110a fits into the engagement recess 4a1 of the right standard support tool 120a, and the engagement hook piece 4a2 of the right standard support tool 120a engages with the upper end of the bank portion 102c of the second groove 102 of the start panel 110a. As a result, the start panel 110a is fixed between the adjacent standard supports 120a.

[0141] In addition, when the attachment of the multiple supports 120 to the inner circumferential surface of the rehabilitated portion 10a is completed, the multiple supports 120 are arranged not only along the inner circumferential direction of the rehabilitated portion 10a, but also in the axial direction of the rehabilitated portion 10a, as shown in Figures 8(b) and 9. Therefore, by sliding the start panel 110a from the back side of the paper in Figure 11(a) to the front side of the paper, that is, in the axial direction of the rehabilitated portion 10a, the start panel 110a passes between multiple sets of pairs of opposing supports 120 aligned in the axial direction of the rehabilitated portion 10a. As a result, one start panel 110a is supported by the opposing pairs of supports 120 at multiple points in the axial direction of the rehabilitated portion 10a.

[0142] Moreover, panels other than the start panel (standard panel, end panel, and corner panel) are inserted between the opposing supports 120 by pushing them from above the inner circumferential surface of the rehabilitated portion 10, instead of sliding them between the opposing supports 120 in the axial direction of the rehabilitated portion 10 as in the case of the start panel. Note that, similarly to the start panel, panels other than the start panel are inserted between a plurality of pairs of opposing supports 120 aligned in the axial direction of the rehabilitated portion 10a, and are supported by the opposing pairs of supports 120 at a plurality of points in the axial direction of the rehabilitated portion 10a. Furthermore, when the start panel is made of a material that is highly flexible and easily deformed, the start panel may also be inserted between the opposing supports 120 by pushing them from above the inner circumferential surface of the rehabilitated portion 10, as in the case of the panels other than the start panel (standard panel, end panel, and corner panel).

[0143] (Installing the first standard panel 110b) Next, a standard panel (second panel) 110b is attached adjacent to the starter panel 110a placed on the surface of the rehabilitated portion 10a.

[0144] FIG. 12(a) shows how a standard panel 110b is attached adjacent to a start panel 110a and straddles two adjacent standard supports 120a, and FIG. 12(b) shows the standard panel 110b attached to these standard supports 120a.

[0145] At this time, the outer linear projection 103a of the third groove 103 of the standard panel 110b fits into the engagement recess 4a1 of the left standard support 120a of the adjacent standard support devices 120a, and the engagement key piece 4a2 of the left standard support device 120a engages with the upper end of the bank portion 103c of the third groove 103. The first projection 111 of the standard panel 110b fits into the first groove 101 of the start panel 110a.

[0146] As a result, the standard panel 110b is fixed between the adjacent standard supports 120a and is connected to the previously placed start panel 110a.

[0147] (Installing the first corner panel 110d) Thereafter, when the panel mounting work proceeds to the corner portion where the surface of the rehabilitated portion 10a begins to rise, a corner panel 110d is mounted across the standard support tool 120a and the corner support tool 120b.

[0148] FIG. 13(a) shows how a corner panel 110d is attached adjacent to a standard panel 110b, straddling the adjacent standard support 120a and corner support 120b, and FIG. 13(b) shows the corner panel 110d attached to these supports.

[0149] At this time, the inner linear protrusion 104b of the fourth groove 104 of the corner panel 110d fits into the engagement recess 4b1 of the left corner support 120b, and the fourth protrusion 114 of the corner panel 110d engages with the third groove 103 of the right standard panel 110b.

[0150] As a result, the corner panel 110d is fixed between the adjacent standard support 120a and corner support 120b, and is also connected to the previously placed standard panel 110b.

[0151] (Installation of standard panel 110b at corner) Next, the standard panel 110b is attached adjacent to the corner panel (fourth panel) 110d placed on the surface of the rehabilitated portion 10a.

[0152] FIG. 14(a) shows a standard panel 110b being attached adjacent to a corner panel 110c, straddling the adjacent corner support 120b and standard support 120a, while FIG. 14(b) shows the standard panel 110b attached to these supports.

[0153] At this time, the first protrusion 111 of the standard panel 110b fits into the fourth groove 104 of the corner panel 110d, and the engaging hook piece 4a2 of the left standard support 120a engages with the upper end of the bank portion 103c of the third groove 103 of the standard panel 110b.

[0154] As a result, the standard panel 110b is fixed between the adjacent corner support 120b and standard support 120a, and is also connected to the previously placed corner panel 110d.

[0155] (Installing the second corner panel 110d) Thereafter, when the panel mounting work has progressed to the point where the surface of the rehabilitated portion 10a rises further, a corner panel 110d is mounted across the adjacent standard support 120a and corner support 120b.

[0156] FIG. 15(a) shows a second corner panel 110d being attached adjacent to the standard panel 110b across two adjacent standard supports 120a, and FIG. 15(b) shows the second corner panel 110d attached to these supports 120.

[0157] At this time, the inner linear projection 104b of the fourth groove 104 of the corner panel 110d fits into the engagement recess 4b1 of the upper corner support 120b of the adjacent standard support 120a and corner support 120b. The fourth projection 114 of the corner panel 110d fits into the third groove 103 of the standard panel 110b.

[0158] As a result, the corner panel 110d is fixed between the adjacent standard support 120a and corner support 120b, and is also connected to the previously placed standard panel 110b.

[0159] (Installation of end panel 110c) Thereafter, when the installation work of the standard panel 110b reaches the front of the already installed start panel 110a, the end panel 110c is installed between the standard panel 110b and the start panel 110a, with the engagement recesses 4a1 facing back to back and spanning two adjacent standard supports 120a.

[0160] FIG. 16(a) shows how the end panel 110c is attached across two adjacent standard supports 120a so as to be positioned between the standard panel 110b and the start panel 110a, and FIG. 16(b) shows the state in which the end panel 110c is attached to these supports. Shows.

[0161] At this time, the second protrusion 112 of the end panel 110c fits into the second groove 102 of the starter panel 110a, and the third protrusion 113 of the end panel 110c fits into the third groove 103 of the standard panel 110b.

[0162] As a result, the end panel 110c is fixed between the adjacent standard supports 120a, and is also connected to the previously placed standard panel 110b and start panel 110a.

[0163] Once the panels have been laid out in this manner around the entire inner surface of the rehabilitated section 10a, the work position for attaching the panels is moved along the central axis of the rehabilitated section 10a of the existing pipe 10 by the length of the panels, and the panel is similarly laid out around the entire inner surface of the rehabilitated section 10a.

[0164] In this case, the panels must be connected in the axial direction, and connecting members suitable for each type are used to connect panels of the same type in the longitudinal direction of the panels.

[0165] (Installation of connecting members 30a to 30d) FIG. 17 shows how various panels are arranged around the inner circumferential surface of the rehabilitated portion 10a of the existing pipe 10, and then joint members 30a to 30d are attached to the panels 110a to 110d, respectively.

[0166] That is, as shown in Fig. 17, a first joint member 30a having a structure capable of accommodating the end of the start panel 110a is attached to the end of the start panel 110a. Similarly, as shown in Fig. 17, a second joint member 30b having a structure capable of accommodating this end is attached to the end of the standard panel 110b, a third joint member 30c capable of accommodating this end is attached to the end of the end panel 110c, and a fourth joint member 30d capable of accommodating this end is attached to the end of the corner panel 110d.

[0167] Thereafter, at a new panel mounting position in the central axial direction of the existing pipe 10, panels are similarly laid all around the inner circumferential surface of the rehabilitated portion 10a, starting from the start panel 110a.

[0168] Then, when the work of laying the multiple panels over the entire inner circumferential surface of the rehabilitated portion 10a of the existing pipe 10 is completed, mortar is injected between the multiple panels 110 and the inner surface of the rehabilitated portion 10a.

[0169] Figure 18(a) shows the completed state of attaching various panels to the inner surface of the rehabilitated section 10a of the existing pipe 10, and Figure 18(b) shows the state of having mortar 130 injected between the rehabilitated section 10a of the existing pipe 10 and the multiple rehabilitation panels 110.

[0170] When injecting the mortar, a formwork member may be placed to support the rehabilitated panel 110 so that the rehabilitated panel 110 does not push inward due to the weight of the mortar until the mortar hardens. This formwork member is removed after the mortar hardens.

[0171] This completes the work of rehabilitating the rehabilitated portion 10a of the existing pipe 10, and a rehabilitated pipe 1000 is obtained in which the rehabilitated portion 10a of the existing pipe 10 has been rehabilitated.

[0172] In this way, in the rehabilitation pipe 1000 of the first embodiment, a plurality of supports 120 are fixed to the inner circumferential surface of the portion (rehabilitated portion) 10a to be rehabilitated in the existing pipe (which may be an existing tubular structure) 10, and a plurality of rehabilitation panels are attached to the supports along the inner circumferential surface of the rehabilitated portion 10a. Because the rehabilitation panels are attached to the supports fixed to the inner circumferential surface of the rehabilitated portion 10a, the attachment strength of the rehabilitation panels 110 to the rehabilitated portion 10a of the existing pipe 10 is higher than that of the filler material, because of the strength of the supports fixed to the existing pipe.

[0173] Furthermore, each of the multiple supports 120 has an expandable structure so that the dimension perpendicular to the inner surface of the existing pipe 10 can be adjusted, so that the rehabilitation panel can be attached flat against the inner surface of the existing pipe 10 regardless of unevenness on the inner surface of the existing pipe 10 or the plate dimensions of the rehabilitation panel.

[0174] In addition, since each of the multiple supports 120 has a connecting portion for connecting adjacent supports among the multiple supports, it is possible to form the multiple supports 120 into a support-support assembly. By forming the support-support assembly, it is possible to further improve the attachment strength of the rehabilitation panel 110 to the rehabilitated portion 10a of the existing pipe 10.

[0175] In addition, before performing the work of fixing supports to the inner surface of the existing pipe 10 (rehabilitated section 10a), a support device assembly 1200 is formed in which multiple supports are connected in a row like a chain via connecting parts.In this way, when fixing multiple supports 120 to the inner surface of the existing pipe 10, it is possible to automatically position the other supports 120 included in the support device assembly 1200 simply by positioning the first support 120 of the support device assembly 1200 on the inner surface of the existing pipe 10, and the work of fixing multiple supports to the inner surface of the existing pipe 10 can be performed efficiently. In the rehabilitated body 100 according to the above-mentioned embodiment 1, the third rehabilitated panel (end panel) 110c is fixed to the support by indirectly engaging it at both ends (i.e., via the linear groove portions of the other rehabilitated panels that engage with the support), and therefore is more likely to come off from the engagement portions of the support than the other first, second and fourth rehabilitated panels (panels having at least one end directly engaging with the support) which are fixed to the support by directly engaging with the support.

[0176] Therefore, it is preferable to attach a panel holder (restraint member) 50 for restricting the third rehabilitating panel from coming off to the connecting portion 223a of the adjacent support to which the third rehabilitating panel 110 is attached.

[0177] Figure 18A is a diagram for explaining such a panel holder 50, where Figure 18A(a) shows the panel holder 50 attached to the connecting portion 223a (portion R1a in Figure 2(b)) of an adjacent support 120a, Figure 18A(b) is a cross-sectional view taken along line Ya-Ya in Figure 18A(a), Figure 18A(c) is a front view of the panel holder 50, Figure 18A(d) is a top view of the panel holder 50 in Figure 18A(c) seen from the top of the page, and Figure 18A(e) is a side view of the panel holder 50 in Figure 18A(c) seen from the left side of the page.

[0178] This panel holder 50 has an abutment piece 54 and a holder body 50a that supports the abutment piece 54. Here, the holder body 50a is a portion that is fixed to the connecting portion 223a of the adjacent support 120a with a fixing bolt 55a and a fixing nut 55b, and includes a front wall 51, a rear wall 52, and a top wall 53, and the front wall 51 and the rear wall 52 are connected by the top wall 53 so that they face each other. The front wall 51 and the rear wall 52 are formed with bolt holes 51a, 52a through which fixing bolts 55a, 55b pass to fix the holder body 50a to the connecting portion 223a of the support 120.

[0179] Further, the abutment piece 54 abuts against a rib (specifically, a linear rib) 105 formed on the back side of the end panel 110c so as to restrict disengagement of the third rehabilitation panel (end panel) 110c in a state indirectly engaged with the engagement portion of the support. The shape and material of the abutment piece may be arbitrary. For example, the abutment piece may be a spring member made of metal such as iron, stainless steel, or aluminum. However, the present invention is not limited to this. The abutment piece may be resin or the like.

[0180] By attaching a panel holder 50 having such a configuration to the connecting portions 223a of adjacent supports 120, the end panels 110c, which are indirectly supported by these supports 120, can be prevented from coming off the supports 120.

[0181] In the rehabilitating body 100 according to the above-mentioned embodiment 1, one support 120 (120a, 120b) supports one rehabilitating panel 110 (110a to 110d), but the support used in this rehabilitating body may be one configured to support multiple rehabilitating panels (a unitized version of the support 120 in embodiment 1), and in the following embodiment 2, a rehabilitating body 200 using such supports 140 (140a to 140c) will be described. Here, the supports 140 are shown without distinction between the horizontal support 140a, the inclined support 140b, and the vertical support 140c. The horizontal support 140a is used in the horizontal portion of the inner circumferential surface of the rehabilitating portion 10a, the inclined support 140b is used in the inclined portion of the inner circumferential surface of the rehabilitating portion 10a, and the vertical support 140c is used in the vertical portion of the inner circumferential surface of the rehabilitating portion 10a.

[0182] (Embodiment 2) Figure 19 is a diagram for explaining a rehabilitating pipe 2000 including a rehabilitating body 200 according to embodiment 2 of the present invention, where Figure 19(a) shows the appearance of the rehabilitating pipe 2000 and Figure 19(b) shows the structure of the Xe-Xe line cross section of Figure 19(a).

[0183] As shown in Fig. 19(a), the rehabilitating pipe 2000 of the second embodiment includes a support 140 instead of the support 120 in the rehabilitating pipe 1000 of the first embodiment, and the support (fixing device) 140 is configured to engage with a plurality of rehabilitating panels 110. As shown in Fig. 19(b), the rehabilitating pipe 2000 uses, for example, first to third supports 140a to 140c that are attached to different locations on the inner circumferential surface of the rehabilitated portion 10a, as described above. Adjacent first supports 140a are connected to each other by connecting members 160a, and adjacent first supports 140a and second supports 140b, and adjacent second supports 140b and third supports 140c are connected to each other by corner connecting members 160b.

[0184] (Support 140) The support 140 used in the rehabilitation pipe 2000 of the second embodiment will be described in detail below.

[0185] Figure 20 is a diagram for explaining the structure of the first to third support devices 140a to 140c used in the rehabilitated body 200 shown in Figure 19, where Figure 20(a) shows the support devices 140a to 140c attached to the rehabilitated portion 10a, Figure 20(b) shows an enlarged view of the first support device 140a (R6 portion) in Figure 20(a), and Figure 20(c) shows the structure of the first support device 140a in Figure 20(a) viewed from the Xf direction.

[0186] The first to third support tools 140a to 140c differ only in the locations where they are attached on the inner circumferential surface of the rehabilitated portion 10a, and the first support tool 140a will be specifically described below.

[0187] The first support 140a is a fixture (fixing device) having one base member 41, multiple engagement members 43a and 43b, and two fixing members 42, each of which is made of a metal material (iron, stainless steel, etc.). Note that each of the members is not limited to being made of a metal material, and may be made of a resin material.

[0188] One base member 41 is a member composed of an L-shaped angle and is fixed to the inner surface S of the rehabilitated portion 10a by two fixing members 42. A plurality of engaging members 43, 43b are attached to one base member 41, and each of the plurality of engaging members 43a, 43b is adapted to engage with one of the plurality of rehabilitated panels 110 (see Figure 23(b)).

[0189] The engaging member 43a is a first engaging member, and has an engaging piece 432a that engages with the rehabilitating panel 110, and a base portion 431a that supports the engaging piece 432a.

[0190] Here, the base portion 431a is fixed to the base member 41 by a joint (for example, a spot welded portion) 5a3. Also, the engagement piece 432a is provided with an engagement recess 5a1 and an engagement hook piece 5a2. Here, the engagement recess 5a1 is a portion into which the outer linear projections 101a-104a of the rehabilitation panel 110 (the start panel 110a, the standard panel 110b, the corner panel 110d) fit, and the engagement hook piece 5a2 is a portion that engages with the upper ends of the bank portions 101c-103c of the rehabilitation panel 110 (the start panel 110a, the standard panel 110b, the corner panel 110d).

[0191] The engaging member 43b is a second engaging member, and has an engaging piece 432b that engages with the rehabilitating panel 110, and a base portion 431b that supports the engaging piece 432b.

[0192] Here, the base portion 431b is fixed to the base member 41 by a joint (for example, a spot weld) 5b3. Also, the engagement piece 432b is provided with an engagement recess 5b1. The engagement recess 5b1 is a portion into which the inner linear protrusions 101b to 104b of the rehabilitation panel 110 (the start panel 110a, the standard panel 110b, and the corner panel 110d) fit.

[0193] The fixing member 42 has a fixing plate 421, a base receiving portion 422, a bolt body 423, and a fixing nut 424. The base receiving portion 422 is attached to the fixing plate 421, the bolt body 423 is attached to the base receiving portion 422, and the fixing nut 424 is attached to the bolt body 423, so that the fixing plate 421 can be fixed to the inner circumferential surface of the rehabilitated portion 10a. The base member 41 is formed with a bolt insertion hole (not shown) into which the bolt body 423 is inserted.

[0194] Therefore, with the fixing plate 421 fixed to the inner circumferential surface of the rehabilitated portion 10a, the base member 41 is placed on the base receiving portion 422 so that the bolt body 423 passes through the bolt insertion hole of the base member 41, and the fixing nut 424 is tightened to the bolt body 423, whereby the base member 41 can be fixed to the rehabilitated portion 10a at a predetermined distance L from the inner circumferential surface S of the rehabilitated portion 10a. The fixing member 42 may have a mechanism capable of adjusting this distance L.

[0195] Here, connecting members 160a that connect the respective base members 41 are provided between adjacent supports 140a (see FIG. 19(b)).

[0196] Figure 21 is a diagram for explaining an example of the structure of a connecting member 160a that connects adjacent fixing devices 140a, Figure 21(a) is a plan view showing a contact piece 164 that regulates the release of engagement between a rehabilitation panel 110 and an adjacent rehabilitation panel 110, and Figure 21(b) is a cross-sectional view along line Yb-Yb in Figure 21(a).

[0197] As shown in FIG. 21, the connection member 160a has an L-shaped block 161, a rectangular block 162, a first fastener 161a, a second fastener 162a, a third fastener 161b, and a contact piece 164.

[0198] In this connecting member 160a, the horizontal portion of the L-shaped block 161 is arranged below the base members 41 (specifically, the horizontal pieces of the L-shaped angles that constitute the base members 41) of the adjacent first support 140a so as to straddle these base members 41, and the rectangular block 162 is arranged above the base members 41 of the adjacent first support 140a so as to straddle these base members 41, and the L-shaped block 161 and the rectangular block 162 are fastened by first fasteners 161a (e.g., bolts and nuts) so that the horizontal portion of the L-shaped block 161 and the rectangular block 162 sandwich the base member 41 of the adjacent first support 140a.

[0199] Furthermore, the vertical portion of the L-shaped block 161 is positioned so as to straddle each base member 41 (specifically, the vertical pieces of the L-shaped angles that constitute the base members 41) of the adjacent first support 140a and to face the rectangular block 162, and the rectangular block 162 and the L-shaped block 161 are fastened by a second fastener 162a (e.g., a bolt and nut) so that the rectangular block 162 and the vertical portion of the L-shaped block 161 sandwich the base member 41 of the adjacent first support 140a.

[0200] This connecting member 160a has an abutment piece 164 fixed to the upper part of the L-shaped block 161 by a third fastener 161b, and the abutment piece 164 is configured to abut against the tip of a linear rib (rib) 105 of the end panel 110c that spans between the engaging member 43a located at one end of the adjacent first support 140a and the engaging member 43a located at the other end of the first support 140a, thereby preventing the end panel 110c from being disengaged from the adjacent standard panel 110b.

[0201] This end panel 110c does not directly engage with the support 140a, but indirectly engages with the engaging member 43a of the support 140a via a part of the other rehabilitated panel 110. Therefore, it is more likely to come off the support 140a than the other rehabilitated panels 110a, 110b, 110d, which have parts that directly engage with the support 140a. Therefore, it is of great significance to provide a connecting member 160a that uses such an abutment piece 164 to regulate the disengagement of the end panel 110c from the other rehabilitated panels 110 (or the engaging member 43a of the support 140a).

[0202] The structure of the connection member 160a is not limited to the structure shown in FIG. 21, and other structures may be used as long as they connect the base members 41 between adjacent supports 140.

[0203] For example, the connecting members 160a that join the third supports 140c together have the same structure as the connecting members 160a that join the first supports 140a together, but the corner connecting members (connecting members arranged at the corner portions of the rehabilitated body 100) 160b that join the first supports 140a and the second supports 140b (or that join the second supports 140b and the third supports 140c) have a different structure from the connecting members (connecting members arranged at the flat portions of the rehabilitated body 100) 160a that join the first supports 140a together or the third supports 140c together.

[0204] Furthermore, such connecting members are not necessarily required. For example, if the size (inner diameter) of the rehabilitated portion 10a is small and the rehabilitated body 100 has the required strength even if the adjacent supports 140 are not connected, the connecting members 160a and 160b are not required.

[0205] 22(b), it is preferable that the support 140 (first support 140a, second support 140b, third support 140c) further includes a reinforcing sheet 45 containing carbon fiber such as glass fiber, and that the reinforcing sheet 45 is provided on the surface 41a facing the inner circumferential surface of the base member 41. When the support 140 includes such a reinforcing sheet 45, the strength of the rehabilitated body 200 including the support 140 can be improved.

[0206] Next, a method for rehabilitating the rehabilitated portion 10a of the existing pipe 10 using the support tool 140 of the second embodiment will be described with reference to FIGS.

[0207] The method of rehabilitating the existing pipe 10 described in the second embodiment is a method of rehabilitating the entire circumference of the rehabilitated portion 10a by fixing the supports 140, attaching the rehabilitation panels 110, and injecting the filler 130 in each of the divided rehabilitation surfaces S1 to S4 arranged along the inner circumferential direction (areas of the inner circumferential surface obtained by virtually dividing the inner circumferential surface of the rehabilitated portion 10a of the existing pipe 10 in the inner circumferential direction). The dotted lines Fx and Fy in Figures 20, 23, 26, and 27 are virtual lines for virtually dividing the inner circumferential surface of the rehabilitated portion 10a of the existing pipe 10 into four in the inner circumferential direction.

[0208] First, on the first divided rehabilitation surface S1 (one of the four divided rehabilitation surfaces S1 to S4 obtained by dividing the inner surface of the rehabilitated portion 10a of the existing pipe 10 into four in the inner circumferential direction), the support 140 is fixed, the rehabilitation panel 110 is attached, and the filler material 130 is injected.

[0209] Figure 22 is a diagram for explaining the process of attaching a rehabilitation panel 110 to the fixing device (support) 140 shown in Figure 20, where Figure 22(a) shows the procedure for attaching the rehabilitation panel 110 to the fixing device 140, and Figure 22(b) shows the case where a reinforcing sheet 45 is attached to the fixing device 140.

[0210] Specifically, as shown in Figure 20(a), the inner surface (S) of the rehabilitated portion 10a of an existing tubular structure is virtually divided into four divided rehabilitation surfaces (S1 to S4) aligned along the inner circumferential direction of the tubular structure (step 1).

[0211] Next, as shown in FIG. 20(a), a first support (horizontal portion support) 140a, a second support (inclined portion support) 140b, and a third support (vertical portion support) 140c are fixed along the inner circumferential direction to a first divided rehabilitating surface S1 of the inner circumferential surface of the rehabilitated portion 10a (step 2). ).

[0212] Each of the supports 140a to 140c has a plurality of engaging members 43a, 43b and a fixing member 42 attached to a base member 41, and the support 140 is attached to the first divided rehabilitating surface S1 by fixing a fixing plate 421 of the fixing member 42 to the inner circumferential surface of the rehabilitated portion 10a with an anchor bolt or the like. Note that, in this embodiment, each of the supports 140a to 140c is formed with a reinforcing sheet 45 as shown in FIG. 22(b).

[0213] In addition, as shown in FIG. 22(a), the supports 140a, 140b, and 140c are attached not at one location in the axial direction (axial direction) of the rehabilitated portion 10a, but at multiple locations within a predetermined range along the axial direction Ya (for example, a range corresponding to the length of the rehabilitated panel 110).

[0214] Next, between adjacent supports 140 among the supports 140a to 140c attached to the first divided rehabilitating surface S1 of the rehabilitated portion 10a, the base members 41 are connected using the connecting members 160a, 160b (see FIG. 20(a)).

[0215] Thereafter, the rehabilitation panel 110 is attached to the supports 140a to 140c (step 3).

[0216] For example, starting from the upper end side of the vertical support 140c, a start panel 110a and three standard panels 110b are attached to the inclined support 140b, and a corner panel 110d is attached across the vertical support 140c and the inclined support 140b. Two standard panels 110b are attached to the inclined support 140b, a corner panel 110d is attached across the inclined support 140b and the horizontal support 140a, and further, six standard panels 110b are sequentially attached to the horizontal support 140a.

[0217] Figure 23 is a diagram for explaining the state in which a rehabilitated panel 110 is attached to the fixing device (each support device) 140 shown in Figure 22, Figure 23(a) shows the portion of the rehabilitated part 10a to which the rehabilitated panel 110 is attached, Figure 23(b) shows an enlarged view of the fixing device 140 (R7 portion) in Figure 23(a), and Figure 23(c) shows the structure of the rehabilitated panel 110 in Figure 23(a) viewed from the Xg direction.

[0218] After the rehabilitating panel 110 is attached to the first divided rehabilitating surface S1 of the rehabilitated portion 10a in this manner (see FIG. 23), the portion of the inner circumferential surface of the rehabilitated portion 10a to which the rehabilitating panel 110 is attached is sealed (step 4).

[0219] Figure 24 is an oblique view for explaining the first step of sealing the portion of the inner surface of the rehabilitated portion 10a to which the rehabilitating panel 110 is attached, with Figure 24(a) showing the state in which the rehabilitating panel 110 is placed on part of the inner surface of the rehabilitated portion 10a, and Figure 24(b) showing the state in which side end clamps 60a, 60b are attached to both ends of the rehabilitated panel 110.

[0220] Both ends of the rehabilitating panel 110 are covered with end clamps 60a, 60b (see Figure 24(b)) so that the exposed portions of the gaps between the longitudinal ends of the rehabilitating panel 110 and the first divided rehabilitating surface S1 (see Figure 24(a)) are sealed.

[0221] Here, the end clamps 60a, 60b include horizontal clamps 61a, 61b arranged in the portion where the rehabilitated panels 110 are lined up horizontally, inclined clamps 62a, 62b arranged in the portion where the rehabilitated panels 110 are lined up diagonally, and vertical clamps 63a, 63b arranged in the portion where the rehabilitated panels 110 are lined up vertically.

[0222] These pressers (jigs) are members that press a sealant made of a soft member (soft resin) that fills the gap between the end of the rehabilitating panel 110 and the first divided rehabilitating surface S1 into the gap.

[0223] Furthermore, both ends of the rehabilitating panel 110 are covered with side edge holders 60c, 60d so that the exposed portions of the gaps between the longitudinal side edges of the rehabilitating panel 110 located at both ends and the first divided rehabilitating surface S1 (see Figure 24(b)) are sealed.

[0224] Figure 25 is an oblique view for explaining the second step of sealing the portion of the inner surface of the rehabilitated portion 10a to which the rehabilitating panel 110 is attached, Figure 25(a) shows the state in which side edge holders 60c, 60d have been attached to the edges of the rehabilitating panel 110 at both ends, and Figure 25(b) shows the structure of the Ya-Ya cross section of side edge holder 60c (R8 portion) shown in Figure 25(a).

[0225] Here, a specific structure of the side edge retainer 60c will be described.

[0226] The side edge pressing tool (jig) 60c has soft resin 650 that seals the gap between the longitudinal side edge of the rehabilitating panel 110 and the first divided rehabilitating surface S1, a pressing member 640 that presses the soft resin 650 into the gap, and a pressing tool housing 610 that movably supports the pressing member 640. Here, in the side edge pressing tool 60c, the pressing member 640 and the pressing tool housing 610 constitute a jig that presses the soft resin 650.

[0227] The presser housing 610 includes a housing lower part 611 and a housing upper part 612, and the housing lower part 611 is attached by a fastening member 620a to a fixing bracket 620 fixed to the inner circumferential surface of the rehabilitated portion 10a.

[0228] A horizontal push-in adjuster 630a is attached to the vertical wall of lower housing portion 611 and the vertical wall of upper housing portion 612 so as to join them, and a vertical push-in adjuster 630b is attached to the ceiling portion of upper housing portion 612.

[0229] The horizontal pressing adjustment tool 630a moves the pressing member 640 in a direction along the inner circumferential surface to adjust the strength with which the soft resin 650 is pressed against the support 140 and the ends of the rehabilitated panel 110, and the vertical pressing adjustment tool 630b moves the pressing member 640 in a direction perpendicular to the inner circumferential surface to adjust the strength with which the soft resin 650 is pressed against the ends of the support 140 and the rehabilitated panel 110 from above those ends.

[0230] By using such a side edge retainer 60c, the gap between the longitudinal side edge of the rehabilitated panel 110 and the first divided rehabilitated surface S1 can be sealed with a simple operation, and it is also possible to prevent the filler material injected into the gap between the rehabilitated panel 110 and the first divided rehabilitated surface S1 from being injected into a linear groove portion of the rehabilitated panel 110 located at the edge that fits with another rehabilitated panel 110 arranged on an adjacent divided rehabilitated surface (for example, the third linear groove portion 103 of the standard panel 110b).

[0231] The side edge holder 60d arranged adjacent to the side edge of the start panel 110a supported by the vertical support 140c has the same structure as the above-mentioned side edge holder 60c arranged adjacent to the front end side (the front side of the paper in FIG. 25(a)) of the horizontal support 140a. Here, the end holders 60a, 60b and the side edge holders 60c, 60d constitute one waterstop jig 60.

[0232] In this way, the portion of the inner surface of the rehabilitated portion 10a to which the rehabilitating panel 110 is attached is sealed with end clamps 60a, 60b and side edge clamps 60c, 60d, and then filler is injected between the rehabilitating panel 110 and the inner surface of the rehabilitated portion 10a (step 4), completing the rehabilitation work on the first divided rehabilitation surface S1.

[0233] Thereafter, the end holders 60a, 60b and the side edge holders 60c, 60d are removed.

[0234] Subsequently, the same work (steps 2 to 4) as that on the first divided rehabilitating surface S1 is carried out on the second to fourth divided rehabilitating surfaces S2 to S4.

[0235] Figures 26 and 27 are figures for explaining a method of dividing the inner surface of the rehabilitated portion 10a into four to form the rehabilitated body 100, where Figure 26(a) shows the state after rehabilitation on the first divided rehabilitation surface S1 is completed, Figure 26(b) shows the state after the fixing device 140 and the rehabilitated panel 110 have been arranged on the second divided rehabilitation surface S2, Figure 27(a) shows the state after rehabilitation on the second divided rehabilitation surface S2 is completed and the fixing device 140 and the rehabilitated panel 110 have been arranged on the third divided rehabilitation surface S3, and Figure 27(b) shows the state after rehabilitation on the third divided rehabilitation surface S3 is completed and the fixing device 140 and the rehabilitated panel 110 have been arranged on the fourth divided rehabilitation surface S4.

[0236] As shown in Fig. 26(a), after the rehabilitation work on the first divided rehabilitation surface S1 is completed, the second divided rehabilitation surface S2 adjacent to the first divided rehabilitation surface S1 is subjected to the same work as the first divided rehabilitation surface S1, in which the supports 140 are fixed (step 2) and the rehabilitated panel 110 is attached (step 2) (see Fig. 26(b)), and then the gap between the end of the rehabilitated panel 110 and the second divided rehabilitation surface S2 is sealed with the water-stopping jig 60, and a filler is injected between the end of the rehabilitated panel 110 and the second divided rehabilitation surface S2 (step 4). In this case, since the rehabilitation of the first divided rehabilitation surface S1 is completed, one of the side edge holders 60c, 60d of the water-stopping jig 60 (the one on the first divided rehabilitation surface S1 side) is not necessary.

[0237] Next, the water-stopping jig 60 is removed, and the support 140 is fixed (step 2) and the rehabilitated panel 110 is attached (step 3) on the third divided rehabilitated surface S3 in the same manner as the work on the second divided rehabilitated surface S2 (see FIG. 27(a)). After that, the gap between the end of the rehabilitated panel 110 and the third divided rehabilitated surface S3 is sealed with the water-stopping jig 60, and a filler is injected between the end of the rehabilitated panel 110 and the second divided rehabilitated surface S2 (step 4). In this case, too, since the rehabilitation of the first divided rehabilitated surface S1 is completed, one of the side edge holders 60c, 60d of the water-stopping jig 60 (the one on the first divided rehabilitated surface S1 side) is not necessary.

[0238] Furthermore, the water-stopping jig 60 is removed, and at the fourth divided rehabilitation surface S4, the support 140 is fixed (step 2) and the rehabilitation panel 110 is attached (step 3) in the same manner as at the third divided rehabilitation surface S3 (see Figure 27(b)).

[0239] Next, the gap between the end of the rehabilitated panel 110 and the fourth divided rehabilitated surface S4 is sealed with the waterstop jig 60, and a filler is injected between the end of the rehabilitated panel 110 and the second divided rehabilitated surface S2 (step 4). In this case, since the rehabilitation of the first and third divided rehabilitated surfaces S1 and S3 has been completed, both of the side edge holders 60c, 60d of the waterstop jig 60 are unnecessary. The waterstop jig 60 is then removed.

[0240] Thereafter, the work position for rehabilitating the inner circumferential surface of the rehabilitated portion 10a is shifted in the axial direction (axial direction) of the rehabilitated portion 10a, and the above-mentioned rehabilitation work (steps 1 to 4) is repeated on the four divided rehabilitation surfaces S1 to S4 obtained by dividing the inner circumferential surface of the rehabilitated portion 10a into four, as described above.

[0241] In this case, for example, when work is performed to inject filler between the rehabilitated panel 110 and the inner surface of the rehabilitated portion 10a on the unrehabilitated first divided rehabilitation surface S1 adjacent to the rehabilitated first divided rehabilitation surface S1, joint material is filled between the rehabilitated panel 110 located on the rehabilitated first divided rehabilitation surface S1 and the rehabilitated panel 110 located on the unrehabilitated first divided rehabilitation surface S1.

[0242] The joint material used can be a flexible thermoplastic resin with an electric heating wire embedded in it. In this case, after filling the joint material, electricity is passed through the electric heating wire in the joint material, causing the joint material to fuse to the rehabilitated panels on both sides.

[0243] Note that Figure 27A shows a state in which a joint material 70 including a heating wire 70a is filled between a rehabilitated panel 110 located on a first divided rehabilitated surface S1 that has been rehabilitated and a rehabilitated panel 110 located on a first divided rehabilitated surface S1 that is in an unrehabilitated state.

[0244] This makes it possible to improve the adhesive strength between the joint material and the rehabilitated panel, and also to achieve higher watertightness between the joint material and the rehabilitated panel.

[0245] Needless to say, such a joint material 70 can be applied to the gaps between adjacent rehabilitating panels 110 arranged side by side in the axial direction in the rehabilitating body 100 of embodiment 1.

[0246] In addition, the method of using such joint material to seal between adjacent rehabilitation panels 110 in the axial direction (axial direction) of the rehabilitated portion 10a has the effect of making it possible to rehabilitate existing pipes at joint portions (seam portions) of existing pipes where the existing pipes face each other.

[0247] When one of adjacent rehabilitation panels is included in one of the rehabilitated parts of the existing pipe that faces the joint of the existing pipe, and the other of the adjacent rehabilitation panels is included in the other of the rehabilitated parts that faces the joint of the existing pipe, if the gap between these adjacent rehabilitation panels is sealed with a joint material containing the above-mentioned heating wire, the joint material will be fused to both of the adjacent rehabilitation panels.Therefore, even if the axes of the adjacent existing pipes are misaligned due to seismic movement, etc., the joint material will remain adhered to the rehabilitated panel of the rehabilitated part on one side of the joint of the existing pipe and the rehabilitated panel of the rehabilitated part on the other side of the joint of the existing pipe.

[0248] The following description will be given with reference to the drawings.

[0249] Figure 28 is a diagram for explaining a method of sealing the gap between one rehabilitation panel 110 of two opposing rehabilitated sections 10a separated by a joint in an existing pipe and the other rehabilitation panel 110 of the two opposing rehabilitated sections 10a, where Figure 28(a) shows two rehabilitated pipes 2001 and 2002 separated by a joint in an existing pipe, Figure 28(b) shows the structure of the cross section along line Xh-Xh in Figure 28(a), and Figure 28(c) shows an enlarged view of portion R9 in Figure 28(b).

[0250] As shown in Figure 28(b), a joint material 70 is filled in the gap between one of the rehabilitation panels 110 of two opposing rehabilitated sections 10a across a joint J of the existing pipe and the other of the two opposing rehabilitation panels 110 of the rehabilitated sections 10a.

[0251] As shown in Figure 28 (c), this joint material 70 is provided with an electric heating wire 70a, and when electricity is passed through the electric heating wire 70a, heat is generated, causing the flexible thermoplastic resin of the joint material 70 to melt and become fused to both of the opposing rehabilitation panels 110.

[0252] In this manner, when the joint material 70 is fused to the opposing rehabilitation panel 110, even if the axial direction of one of the two opposing rehabilitated sections 10a facing each other across the existing pipe joint J is shifted due to seismic motion, the joint material 70 can maintain its fusion state with both of the opposing rehabilitated sections 10a.

[0253] Figure 29 shows a case where the axial direction is shifted between two rehabilitated sections 10a that face each other across a joint in an existing pipe, where Figure 29(a) shows two rehabilitated pipes 2001 and 2002 that face each other across a joint in an existing pipe, Figure 29(b) shows the structure of the cross section along line Xi-Xi in Figure 29(a), and Figure 29(c) shows an enlarged view of the R10 portion of Figure 29(b).

[0254] In other words, even if the axial direction of one of the two rehabilitated portions 10a facing each other across the joint J of the existing pipe is shifted due to seismic motion (see Figures 29(a) and 29(b)), one end of the joint material 70 will remain adhered to one of the two rehabilitated portions 10a, and the other end of the joint material 70 will remain adhered to the other of the two rehabilitated portions 10a (see Figure 29(c)).

[0255] As a result, even if the axial direction is shifted between the two rehabilitated sections 10a facing each other across the joint J of the existing pipe, watertightness is not lost between the two rehabilitated pipes 2001 and 2002 facing each other across the joint J of the existing pipe, and rehabilitation can be performed that can withstand axial misalignment of the existing pipe due to seismic movement.

[0256] As described above, in the rehabilitation method of the second embodiment, the inner circumferential surface of the rehabilitated portion 10a is virtually divided into four divided rehabilitation surfaces S1-S4, and for each of these divided rehabilitation surfaces S1-S4, the support 140 is fixed, the rehabilitation panel 110 is attached, and the filler 130 is injected, so that the rehabilitation work is completed sequentially in a narrow area (divided rehabilitation surfaces S1-S4) compared to the entire circumference of the inner circumferential surface of the rehabilitated portion 10a. As a result, the amount of filler injected at one time is reduced, and sufficient filling pressure can be applied during filling.

[0257] This makes it possible to prevent or reduce the decrease in the strength of the filler by suppressing the occurrence of pinholes in the filler 130. In addition, because the amount of filler injected at one time is reduced, the load on the rehabilitated panel is reduced, and the risk of deformation of the rehabilitated pipe can be reduced.

[0258] As described above, the present invention has been illustrated using the preferred embodiment of the present invention, but the present invention should not be interpreted as being limited to this embodiment. It is understood that the scope of the present invention should be interpreted only by the claims. It is understood that a person skilled in the art can implement an equivalent scope based on the description of the present invention and technical common sense from the description of the specific preferred embodiment of the present invention. It is understood that the contents of the documents cited in this specification should be incorporated by reference to this specification as if the contents themselves were specifically described in this specification. [Industrial Applicability]

[0259] The present invention is useful as a rehabilitation body including a rehabilitation panel fixed onto the inner surface of an existing tubular structure, as it can obtain a rehabilitation body that can increase the fixing strength of the rehabilitation panel to the existing tubular structure.

[0260] Furthermore, the present invention is useful in that it can provide a rehabilitation method that makes it possible to rehabilitate an existing tubular structure by using such a rehabilitation body. [Explanation of symbols]

[0261] 10 Existing pipes 50 Panel holder (regulating member) 60 Water Stopping Tool 100, 200 Rehabilitation 110 Rehabilitation Panel 110a First Panel (Start Panel) 101 First groove 111 First protrusion 110b Second Panel (Standard Panel) 102 Second groove 112 Second protrusion 110c Third Panel (End Panel) 103 Third Groove 113 Third protrusion 110d 4th panel (corner panel) 104 Fourth Groove 114 Fourth protrusion 120, 120a, 120b support 140, 140a~140c Support (fixing device) 41 Base material 42 Fixing member 43, 43a, 43b Engagement members 160a, 160b Connection members 164 Contact piece 1000, 2000 Rehabilitation

Claims

1. A rehabilitation body for rehabilitating the inner circumferential surface of an existing tubular structure, The rehabilitated body is A plurality of supports; Multiple rehabilitation panels and Equipped with each of the plurality of supports is configured to be capable of being fixed to the inner circumferential surface, and each of the plurality of supports is capable of supporting at least one of the plurality of rehabilitating panels; a support mechanism for supporting the at least one rehabilitating panel; an adjustment mechanism capable of adjusting a distance between the inner circumferential surface and the at least one rehabilitating panel; The rehabilitation body is configured to include:

2. The support mechanism includes: A base portion fixed to the inner circumferential surface; a first engagement portion for engaging with the at least one rehabilitating panel; a first connecting portion for connecting the first engagement portion to the base portion; The rehabilitating body of claim 1 .

3. The rehabilitation body according to claim 1 or 2, wherein each of the plurality of supports has a second connecting portion for connecting to an adjacent other support.

4. Each of the plurality of supports is A base member; a plurality of engagement members attached to the base member; a fixing member for fixing the base member to the inner circumferential surface; Including, The rehabilitating body according to claim 1 , wherein each of the plurality of engaging members is a member capable of engaging with any one of the plurality of rehabilitating panels.

5. The rehabilitated body according to claim 4 , wherein a reinforcing sheet is provided on a surface of the base member facing the inner circumferential surface.

6. The plurality of rehabilitating panels include a third panel, and the third panel is engaged with an adjacent support via a part of another rehabilitating panel, A rehabilitating body as described in claim 4 or 5, which has a connecting member that connects adjacent supports to which a particular rehabilitating panel among the plurality of supports is engaged, and an abutment piece that abuts against a rib formed on the back side of the third panel.

7. A rehabilitating body as described in any one of claims 1 to 5, wherein each of the plurality of rehabilitating panels includes a second engagement portion at both inner circumferential ends along the inner circumferential surface for engaging with other adjacent rehabilitating panels.

8. The plurality of rehabilitating panels include one or more first panels; one or more second panels; one or more third panels; Including, the second engagement portion included in each of the one or more first panels has a first groove portion formed at one end in an inner circumferential direction along the inner circumferential surface and a second groove portion formed at the other end in the inner circumferential direction, the second engagement portion included in each of the one or more second panels has a third groove portion formed at one end in the inner circumferential direction and a first protrusion portion formed at the other end in the inner circumferential direction, the second engagement portion included in each of the one or more third panels has a second protruding portion formed at one end in the inner circumferential direction and a third protruding portion formed at the other end in the inner circumferential direction, The rehabilitated body according to claim 7 , wherein the first panel, the second panel, and the third panel are arranged in a predetermined order in the inner circumferential direction.

9. a first protrusion of the second panel configured to be engageable with the first groove of the first panel; the second protrusion of the third panel is configured to be engageable with the second groove of the first panel; The rehabilitating body according to claim 8 , wherein the third projection of the third panel is configured to be engageable with the third groove of the second panel.

10. the plurality of rehabilitating panels further includes one or more fourth panels; The one or more fourth panels include a first plate-like piece and a second plate-like piece, and have a bent plate portion in which one long side of the first plate-like piece and one long side of the second plate-like piece are joined together such that the surfaces of the two plate-like pieces form an obtuse angle; The rehabilitating body described in claim 9, wherein the second engagement portion included in each of the one or more fourth panels has a fourth groove portion formed at one end of the bent plate portion in the inner circumferential direction along the inner circumferential surface, and a fourth protrusion portion formed at the other end of the bent plate portion in the inner circumferential direction.

11. the fourth protrusion of the fourth panel is configured to be engageable with the third groove of the second panel; The rehabilitating body according to claim 10 , wherein the fourth groove portion of the fourth panel is configured to be able to engage with the first protrusion portion of the second panel.

12. the third panel is engaged with the adjacent support through a portion of the first panel or the second panel; A rehabilitating body as described in any one of claims 8 to 11, wherein a regulating member including a contact piece that abuts against a rib formed on the back side of the third panel is attached to a portion connecting adjacent supports among the plurality of supports with which the third panel is engaged.

13. Each of the plurality of rehabilitation panels has a rectangular shape, and the plurality of rehabilitation panels are arranged such that a long side of the rectangle extends along an axial direction of the tubular structure and a short side of the rectangle extends along an inner circumferential direction along the inner circumferential surface, The rehabilitating body according to any one of claims 1 to 12, wherein the size of the rectangle is the same for each of the plurality of rehabilitating panels.

14. The rehabilitated body according to any one of claims 1 to 13, wherein the rehabilitated panel comprises glass fibre.

15. Claims 1 to 14 further comprising a reinforcing plate including carbon fiber bonded to the inner circumferential surface. The reconstructed body according to any one of the preceding claims.

16. A rehabilitated body as described in any one of claims 1 to 15, wherein gaps between adjacent rehabilitated panels among the plurality of rehabilitated panels arranged in the axial direction of the tubular structure are filled with a joint material including an electric heating wire.

17. A method for rehabilitating an inner circumferential surface of an existing tubular structure, comprising: Fixing a plurality of supports to the inner circumferential surface; Attaching a plurality of rehabilitating panels to the plurality of supports; Including, Each of the plurality of supports is capable of supporting at least one of the plurality of rehabilitating panels, Each of the plurality of supports has a second connecting portion for connecting to another adjacent support, Attaching the plurality of supports to the inner circumferential surface includes forming one or more support assembly by connecting two or more supports among the plurality of supports via the second connecting portion; fixing a leading support member located at one end of the plurality of supports included in each of the one or more support member combinations to a predetermined position on the inner circumferential surface; and fixing a support located next to the leading support to a final support located at the other end of the plurality of supports along the direction of the inner circumferential surface at the arrangement pitch of the plurality of supports in the support link body.

18. Each of the plurality of supports is a first engagement portion capable of engaging with at least one of the plurality of rehabilitating panels; an adjustment mechanism capable of adjusting a gap between the at least one rehabilitating panel and the inner circumferential surface; Equipped with Attaching the plurality of rehabilitating panels to the plurality of supports includes: The method according to claim 17, further comprising adjusting a distance between the at least one rehabilitating panel and the inner peripheral surface with at least one of the plurality of supports by the adjustment mechanism.

19. Each of the plurality of rehabilitating panels is provided with a second engagement portion at each of both inner circumferential ends for engaging with another adjacent rehabilitating panel, Attaching the plurality of rehabilitating panels to the plurality of supports includes:

19. The method according to claim 17 or 18, comprising engaging each of the plurality of rehabilitating panels with the adjacent other rehabilitating panels via the second engagement portion.

20. A method for rehabilitating an inner circumferential surface of an existing tubular structure, comprising: Step 1: virtually dividing the inner circumferential surface into a plurality of divided rehabilitation surfaces arranged along an inner circumferential direction of the existing tubular structure; Step 2: fixing a plurality of supports to one of the plurality of divided rehabilitating surfaces; Step 3: attaching a plurality of rehabilitating panels to the plurality of supports; Step 4: injecting a filler between the divided rehabilitating surfaces and the plurality of rehabilitating panels; Including, The method rehabilitates the inner circumferential surface by repeatedly performing steps 2 to 4 on the plurality of divided rehabilitating surfaces aligned along the inner circumferential direction.

21. Step 4 includes a step of sealing a gap between an edge of the rehabilitated panel and the divided rehabilitated surface before injecting the filler, The step of sealing the gap includes: Placing a soft member in the gap; deforming the soft member using a water-stopping tool to seal the gap; 21. The method of claim 20, comprising:

22. The deformation of the soft member using the water-stopping tool includes: The method according to claim 21 , further comprising pressing the soft member against the gap from both an inner circumferential direction of the tubular structure and an axial direction of the tubular structure with the water-stopping tool.

23. Attaching a plurality of rehabilitating panels to a plurality of supports includes: disposing a rehabilitating panel in an axial direction of the tubular structure; sealing gaps between adjacent retread panels aligned in an axial direction of the tubular structure; Including, Sealing the gap between the adjacent retread panels includes Filling the gaps in the rehabilitated panels with a joint material including a heating wire; The joint material is fused to the adjacent rehabilitated panels by passing an electric current through the heating wire, thereby fixing the adjacent rehabilitated panels to each other.

23. The method of claim 22, comprising:

24. The method of claim 23, wherein the rehabilitated panel is a plastic panel.

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