JP2006152706A - Built-in pipe attaching method and structure for repairing sheath pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accomplish the objective of securing the degree of soundness of a built-in pipe and a sheath pipe in an appropriate manner without involving the complication of a structure or the like. <P>SOLUTION: The predetermined number of tension members 16 are brought under tension and retained between each of the exteriors of the ends of the sheath pipe after the insertion of the built-in pipe to the sheath pipe. The predetermined number of tension members are arranged around the outer peripheral surface of the built-in pipe 14 along the axis of the interpolation pipe by the bundling of the binding means 18 arranged in a plurality of positions. Thus, positioning of the built-in pipe in relation to the sheath pipe is performed. Then the tension members in a state of strain are integrally consolidated around the outer peripheral surface of the built-in pipe by the infusion and filling of the filler for fixation into the clearance 46 between the built-in pipe and the sheath pipe. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In the present invention, an intubation tube inserted into an existing sheath tube is injected into the space between the inner tube and the sheath tube, and the fixed filler filling is consolidated into the sheath tube. The present invention relates to an endoscopic intubation mounting method that is fixedly mounted and a sheath tube repair structure formed thereby.

  As a method for repairing or repairing an existing sheath pipe such as an old sewer pipe, for example, a flexible synthetic resin intubation pipe is inserted into the sheath pipe, and a gap between the inner pipe and the sheath pipe is inserted. There is a widely known construction method in which this intubation tube is integrally fixed and mounted in the sheath tube by consolidating the filling material injected and filled into the sheath tube.

  Here, since the inner tube is a flexible tube made of synthetic resin, and the fixing filler used for fixing the tube is liquid, in this type of construction method, buoyancy acting on the tube The posture collapses due to, for example, meandering due to partial levitation, disturbance of the gradient, etc. are likely to be accompanied. For this reason, for example, a rib-like spacer of a predetermined height, which is radiated, is arranged around the outer peripheral surface of the inner intubation tube, and the inner tube is positioned and supported by the spacer with respect to the inner tube with respect to the inner tube. In general, this type of construction method is used to prevent the collapse of the intubation posture (see JP-A-8-338565, etc.).

  However, since this type of spacer needs to adjust and set the height of the rib appropriately according to the inner diameter of the sheath tube and the outer diameter of the inner intubation, its design, processing, etc. are likely to be complicated.

  Moreover, in the operation | work which inserts an intubation tube in a sheath tube, the rotation of an intubation tube | pipe is often accompanied by the property of the operation | work. And when rotation of the intubation occurs, the spacer will be inserted into the sheath tube while rotating together with the inner tube, and particularly when trying to give a gradient to the inner tube by the rib height of the spacer, The deviation of the rib position due to the rotation of the spacer may cause the collapse of the gradient posture applied to the inner intubation.

  Furthermore, the rotation of the intubation during insertion into the sheath can easily be twisted. However, since the known spacer has a configuration in which the rib-shaped tip is slidably contacted with the inner peripheral surface of the sheath tube, there is a possibility that the correction of the twist may not be easy due to the contact resistance.

  And in this well-known structure which arrange | positions a rib-shaped spacer around the outer peripheral surface of an intubation tube, the resistance at the time of insertion in a sheath tube with respect to the rib part of this spacer, buoyancy by a fixing filler, etc. More strength is required. In other words, in such a spacer, the rib portion needs to have a thickness and a height that can maintain its strength. This prevents the inner tube diameter used for repairing and repairing the sheath tube from being increased. It is clear that

  Here, as a method other than using such a spacer, for example, a configuration in which the posture of the intubation tube is prevented from being deformed due to levitation by stretching a wire inserted through the inner tube is disclosed in Japanese Patent Laid-Open No. Sho 62-62. No. 280426 or JP-A-63-255426.

  With such a configuration, positioning and support of the intubation tube in the sheath tube can be performed without providing a spacer on the outer peripheral surface of the inner tube, and it is easy to set a gradient with respect to the sheath tube. The improvement of sex can be expected sufficiently.

  However, in this known configuration, since the intubation is only supported by a plurality of wires stretched inside, the torsion of the intubation with rotation at the time of insertion, and the fixing filler The possibility of occurrence of shrinkage deflection in the axial direction due to pressure during injection and filling cannot be denied.

  In addition, since the wire rod is stretched in a state where it is in contact with the inner peripheral surface of the intubation tube, the inner peripheral surface of the inner tube can be damaged by contact, friction, and the like. Therefore, this known configuration is likely to be accompanied by a decrease in the degree of soundness of the intubation.

  And in this well-known structure, there is a possibility of damaging the inner peripheral surface of the intubation tube in this way, so that the wire rod cannot be pulled strongly, and in the case where the effective length of the sheath tube is long, etc. Since a high support force cannot be obtained, the support force against the intubation is likely to be reduced.

Here, the fixing filler to be injected and filled in the gap between the inner tube and the sheath tube is fixed at the same time as the inner tube is fixed to the sheath tube, and the deteriorated sheath tube and the reinforcement of the inner tube inserted therein It also has the function of However, if the gap between the intubation tube and the sheath tube is narrow, the thickness of the filling material that is injected and filled into the gap becomes thin, so that the strength sufficient to reinforce the sheath tube and the intubation tube is fixed. There is also a risk that it will not be obtained as a filler. Therefore, even in this configuration, increasing the diameter of the intubation tube tends to be difficult.
JP-A-8-338565 JP 62-280426 A JP-A 63-255426

  The problem to be solved is that in the configuration in which the wire is inserted and stretched in the intubation tube, the soundness of the intubation tube tends to be lowered, the reliability of work is likely to be lowered, and the usable inner tube diameter is It is easy to be restricted.

  In the intubation mounting method of the present invention according to claim 1, a predetermined number of tensile members disposed along the axis around the outer peripheral surface of the intubation tube by bundling with bundling means arranged at a plurality of positions, After inserting the intubation tube into the sheath tube, the inner tube is positioned with respect to the sheath tube by holding it in tension between the ends of the sheath tube, and fixing to the gap between the inner tube and the sheath tube. The main feature is that the tensioned tension material is integrally consolidated around the outer peripheral surface of the intubation tube by injecting and filling the filler.

  The main feature of claim 2 is that a plurality of tensile materials are used.

  Further, the third aspect of the present invention provides the support of the one extension end by the support device with a tension force release mechanism disposed at least outside the one end of the sheath tube, and the other by the tension jack disposed outside the other end of the sheath tube. The tension material is tensioned under the pulling of the extension end, and the tension material is held by holding the other extension end of the tension material by a support device with a tension release mechanism arranged outside the tension jack. Its main feature is to keep it in tension.

  Further, according to a fourth aspect of the present invention, there is provided a substrate and a movable plate as the tensioning force release mechanism-equipped support device disposed outside each end of the sheath tube, and the tension jack disposed outside the other end of the sheath tube. The most important feature is to use one having concentric insertion holes aligned with the sheath tube.

  The fifth feature of the present invention is that the tensile material is a PC steel wire.

  Further, in the sheath tube repair structure of the present invention according to claim 6, it is arranged on the outer peripheral surface of the inner intubation tube under the bundling by the bundling means arranged at a plurality of separated positions, and the tension in the sheath tube is caused by the tension. A predetermined number of tensile materials for positioning the intubation tube are injected into the gap between the inner tube and the sheath tube, and the fixed filling material is solidified in the tensioned state around the inner tube. Its most important feature is that it remains fixed.

  The seventh feature of the present invention is that the number of tensile materials is plural.

  Further, claim 8 is characterized in that the tensile material is a PC steel wire.

  The inner tube mounting method of the present invention according to claim 1 performs positioning and support of the tube in relation to the sheath tube under the tension of the tensile material disposed around the outer peripheral surface of the tube. There is an advantage that the degree of soundness of the intubation can be maintained sufficiently high because tension of the tensile material that does not damage the inner peripheral surface of the intubation can be easily made.

  And, as in this invention, if the tension material is arranged around the outer peripheral surface of the intubation tube, pulling and tensioning the tension material under a strong traction force will adversely affect the soundness of the intubation tube. Therefore, it is sufficiently possible to ensure a high supporting force for the intubation over its entire length. Therefore, since this tensile material can secure a high support force that resists the buoyancy caused by the injection and filling of the fixing filler, the advantage of ensuring sufficient intubation support without posture collapse is also claimed. According to the intubation mounting method of item 1, it is obtained.

  Furthermore, since the tension material is integrally arranged around the outer peripheral surface of the inner intubation tube under the binding by the binding means, the insertion operation of the inner intubation tube can be easily performed while restricting the rotation into the sheath tube. . Therefore, there is an advantage that the workability and the certainty of the work are reliably improved.

  And since the tensile material arranged around the outer peripheral surface of the intubation tube is integrally bound to the inner tube by the bundling means arranged in a plurality of locations in the axial direction, the intubation tube in the axial direction is Shrinkage deflection is sufficiently suppressed. Therefore, also in this point, there is an advantage that the high degree of soundness of the intubation can be sufficiently maintained.

  Further, according to the intubation tube mounting method of claim 1, it is possible to easily obtain a sheath tube repair structure in which the tensile material remains integrally around the outer peripheral surface of the intubation tube, and the present invention according to claim 6. If the sheath tube repair structure is used, the tensile material remaining around the outer peripheral surface of the intubation tube will be integrated by consolidation of the fixing filler, so that it will function as a reinforcement, and its strength will be greater than its thickness Since securing is possible with this fixing filler integrally consolidated with a tensile material, it is possible to sufficiently reduce the thickness of the fixing filler and consequently to increase the diameter of the usable intubation tube. There are advantages.

  Moreover, in Claim 2 of this invention, since the tension | tensile_strength material is made into multiple pieces, the fixed holding of the intubation tube by the tension | tensile_strength tension | tensile_strength becomes possible easily. In other words, since a high supporting force that resists the buoyancy caused by the injection and filling of the fixing filler can be obtained even more by using a plurality of tension members, it is possible to prevent the collapse of the posture of the intubation tube more reliably. There is an advantage that you can.

  Furthermore, in claim 3 of the present invention, the extension end of the tension member is supported by the support device with a tension force release mechanism arranged outside each end of the sheath tube, so that the tension member under a strong tension force is used. There is an advantage that it is possible to appropriately hold, and to remove it after the end of tension, easily and appropriately under the release of the tension.

  And in Claim 4 of this invention, as each tension | tensile_strength cancellation | release mechanism supporting device distribute | arranged to each outer end of a sheath tube, and the jack for tension | tensile_strength distribute | arranged to the other end side exterior of the sheath tube, the board | substrate And because the movable plate is provided with concentric insertion holes aligned with the sheath tube, it is possible to insert and place the temporary tube through the concentric insertion holes into the inner intubation during construction. There is an advantage that this intubation can be used even during construction.

  Further, according to the fifth aspect of the present invention, since the tensile material is a PC steel wire, there is an advantage that a strong tension can be easily secured.

  Further, according to the seventh aspect of the present invention, since there are a plurality of tension members, there is an advantage that uniform reinforcement around the inner intubation can be easily secured.

  In claim 8 of the present invention, since the tensile material is a PC steel wire, high rigidity in the sheath pipe in the sheath pipe repair structure of claim 6 is appropriately secured under the strong tension. There is an advantage that you can.

  The purpose of appropriately ensuring the soundness of the intubation and sheath tube can be realized without complicating the configuration.

  FIG. 1 is a schematic plan view of a partially broken view showing one step in the method for mounting an intubation tube according to the present invention. As can be seen from FIG. The inserted inner tube 14 is positioned and supported with respect to the sheath tube under the tension of a predetermined number of tensile members 16 disposed along the outer peripheral surface of the inner tube and extending in the axial direction.

  As the intubation tube 14 inserted into the sheath tube, for example, a flexible tube made of a synthetic resin that integrally has a helical wire as an aggregate can be exemplified. In the present invention, a predetermined number of, for example, a plurality of tension members 16 extending in the axial direction are stretched along the outer peripheral surface of the inner tube (flexible tube) 14 under the binding by the predetermined binding means 18. Are integrally arranged.

  As this tension material 16, a wire etc. can be utilized from common PC steel. The number of tension members 16 can be exemplified by four pieces arranged approximately every 90 ° as shown in FIG. 2 and FIG. 3, for example. They are integrated along the outer peripheral surface of the inner intubation tube 14 under binding by the means 18.

  Examples of the bundling means 18 include a general bundling band, a bundling tape, a bundling string, and the like, and the bundling means are arranged at a plurality of locations separated in the axial direction of the inner tube 14.

  In this inner tube mounting method, an inner tube 14 having a tension member 16 disposed on its outer peripheral surface is inserted into one of the sheath tubes 12 communicated between a pair of manholes 20, for example (FIG. 1). reference). As can be seen from FIG. 1, for example, the one extension end 16 a is supported by the support device 22 with a tension release mechanism disposed outside one end side of the sheath tube 12, and the other end of the sheath tube. The pulling member 16 is pulled and tensioned by a predetermined pulling force under the pulling of the other extension end 16b by the tensioning jack 24 arranged outside the side.

  As the support device 22 with the tension release mechanism disposed outside the one end side of the sheath tube 12, for example, the end surface side of the sheath tube via a bearing plate 25 having an arc surface corresponding to the inner circumferential arc surface of the manhole 20. An example is a combination of a substrate 26 to be grounded, a connection of one extending end of the tension member 16, and a movable plate 28 to be supported to the substrate, and a telescopic screw rod 30 interposed between the substrate and the movable plate. it can.

  In this configuration, the tension member 16 is extended through an insertion hole of the substrate 26, for example, a part of a concentric insertion hole 32 described later, and the extension end 16 a is connected to the movable plate 28, for example, the grip 34. It is locked and connected by the combination with the wedge 36. And the tension | tensile_strength extension | extension end 16a in the support apparatus 22 with a tension | tensile_strength cancellation | release mechanism is carried out by the proximity | contact operation of the movable plate 28 with respect to the board | substrate 26 under shortening of the expansion-contraction screw rod 30 by the nut grip 38 provided previously. The tension is released.

  As shown in FIG. 1, in this embodiment, a rubber packing 39 is interposed between the bearing plate 25 and the substrate 26 of the support device with a tension release mechanism. However, the rubber packing 39 is not an essential member and can be omitted.

  Moreover, as the tensioning jack 24 arranged outside the other end side of the sheath tube 12, for example, a substrate having an arc surface corresponding to the inner circumferential arc surface of the manhole 20 and grounded to the end surface side of the sheath tube 12 40 and the other extended end 16b of the tension member 16 can be connected and supported, and a movable plate 42 for the substrate and a pair of telescopic cylinders 44 spaced apart in parallel between the substrate and the movable plate can be exemplified.

  In this configuration, the extended end 16 b of the tensile material extended through the substrate 40 is locked and connected to the movable plate 42 by, for example, a combination of a grip 46 and a wedge 48. Then, the extension end 16b, that is, the tension member 16 is pulled and tensioned under the separation movement of the movable plate 42 with respect to the substrate 40 accompanying the extension operation of the extension cylinder 44, and the extension cylinder 16 is shortened. The tension of the corresponding extension end is released under the accompanying movement of the movable plate relative to the substrate.

  Examples of such a tensioning jack 24 include those disclosed in Japanese Patent Application Laid-Open No. 2001-59220, and the tensioning jack itself is not the gist of the present invention. Detailed description is omitted.

  In such a configuration, after the one extension end 16a is supported by the support device 22 with the tension release mechanism, the tensile material is pulled by the tension jack 24 holding the other extension end 16b. 16 is tensioned as a whole, and the intubation tube 14 is positioned and supported under the tension of the tension member. After the tensioning by the tensioning jack 24, the tensioned state of the tension member 16 is arranged on the same side as the tensioning jack 24 by holding the one extending end 16 a by the tensioning force release mechanism supporting device 22. The other extended end 16b is maintained by the other support device 45 with the tension release mechanism.

  In addition, since the same thing as the support apparatus 22 with one tension force cancellation | release mechanism can be utilized as this other support apparatus 45 with tension | tensile_strength cancellation | release mechanism, the detailed code | symbol is attached | subjected by attaching | subjecting the same code | symbol to a common member. The description will be omitted.

  On the other hand, in a state where the tension member 16 is supported by the other support devices 22 and 45 with the tension release mechanism, a predetermined fixing filler 48 is provided in the gap 46 between the positioned inner tube 14 and the sheath tube 12. By injecting, filling, and consolidating the fixing filler, the inner tube is integrally fixed to the sheath tube together with the tension member 16 in a tension state around the outer peripheral surface (see FIG. 3).

  An example of the fixing filler 48 is cement milk.

  After the fixing filler 48 is consolidated, the tensioning force releasing mechanism supporting device 22 and the tensioning jack 24 arranged outside each end of the sheath tube 12 release the tensioning force in each device, and then The material 16 is removed from the extending ends 16a and 16b of the material 16 and from the outside of each end of the sheath tube together with the bearing plate 25 and the like. Then, as shown in FIG. 4, the extension tube 16 a, 16 b extending to the outside of each end of the sheath tube 12 is cut at an appropriate location to attach the inner tube 14 to the sheath tube 12. The work, for example, repair of the sheath tube and repair work are completed.

  As described above, in the intubation mounting method of the present invention, the intubation tube is positioned and supported with respect to the sheath tube 12 under the tension of the plurality of tensile members 16 arranged around the outer peripheral surface of the intubation tube 14. ing. With such a configuration, the tension of the tension member 16 can be easily performed without damaging the inner peripheral surface of the inner intubation 14, so that the soundness of the inner intubation can be maintained sufficiently high.

  And if it is the structure which arrange | positions the tension | tensile_strength material 16 around the outer peripheral surface of the intubation tube 14 like this invention, it will have a bad influence on the soundness of an intubation tube to pull and tension | tensile_stretch material under strong traction force. Therefore, it is sufficiently possible to ensure a high supporting force for the intubation over the entire length. Therefore, since a high supporting force that resists the buoyancy caused by the injection and filling of the fixing filler can be ensured in the tension member 16, it is possible to sufficiently secure the intubation support without the posture collapse according to the present invention. Become.

  Further, in the present invention, since the plurality of tensile members 16 are integrally arranged around the outer peripheral surface of the inner tube 14 under the binding by the bundling means 18, the rotation into the sheath tube 12 is restricted. However, it is possible to easily insert the intubation tube. Therefore, the workability and the certainty of the work are reliably improved.

  And since the tension | tensile_strength material 16 distribute | arranged around the outer peripheral surface of the inner intubation 14 is united integrally with this inner intubation by the bundling means 18 distribute | arranged to the several places in an axial direction, in the axial direction The contraction deflection of the intubation is sufficiently suppressed. Therefore, also in this respect, the high degree of soundness of the intubation tube 14 can be sufficiently maintained.

  Furthermore, according to this intubation mounting method, it is possible to easily obtain a sheath tube repair structure in which the tension member 16 remains integrally around the outer peripheral surface of the intubation tube 14.

  A sheath tube repair structure 10 constructed by the intubation mounting method of the present invention is shown in FIGS. In this sheath tube repair structure 10, a tensile filler 16 disposed along the outer peripheral surface of the inner tube 14 and extending in the axial direction is fixed between the sheath tube 12 and the inner tube. By the consolidation of 48, it is fixed and remains integrally in the sheath tube in its tension state.

  As described above, the tensile material 16 extending in the axial direction and remaining around the outer peripheral surface of the inner tube 14 functions as a reinforcing material by being integrated by consolidation of the fixing filler 48. That is, since it is possible to secure the strength exceeding the thickness in the fixing filler 48 in which the tension member 16 is integrally consolidated, according to the sheath tube repair structure 10, the fixing filler The thickness can be reduced, and the diameter of the usable inner intubation 14 can be sufficiently increased.

  Further, since the tension member 16 extending in the direction along the axis of the inner tube 14 is fixed integrally, the sheath tube 12 is firmly integrated in the axial direction, that is, the unification of the sheath tube 12 is achieved. Reinforcing at the eyes will be sufficient.

  In the present invention, the supporting devices 22 and 45 with a tension releasing mechanism are used for holding each end of the tension member 16. According to this configuration, since the removal from the tension member 16 can be easily performed under the release of the tension force, high workability and high work reliability can be easily ensured.

  Here, as can be seen from FIG. 1, in this embodiment, the substrate 26 and the movable plate 28 of the support devices 22 and 45 with the tension releasing mechanism, the substrate 40 of the tension jack, and the movable plate 42 A concentric insertion hole 32 aligned with the intubation 14 is provided. According to such a configuration, even when the supporting devices 22 and 45 with the tension releasing mechanism 22 and the tensioning jack 24 are used, that is, at the time of construction, the inner tube 14 is inserted through the concentric insertion hole 32. The temporary pipe (not shown) can be inserted and disposed, and the tension member 16 is disposed along the outer peripheral surface of the inner intubation, so that the inner part is not adversely affected even during the construction. It is fully possible to use intubation.

  Here, as can be seen from FIG. 2 and FIG. 3, one of the lower portions of the plurality of tensile members 16 arranged around the outer peripheral surface of the intubation tube 14 is made larger in diameter than other portions. Is preferred.

  By setting it as such a structure, it becomes possible to prevent reliably the rotation of the inner intubation 14 at the time of insertion in the sheath pipe 12.

  In this embodiment, the number of the tension members 16 is specified as four, but it is sufficient if the number of the tension members 16 can be enclosed in the circumferential direction by arranging them at equal intervals. For example, three or five may be used as the number of tensile materials.

  Further, here, a plurality of materials are embodied as the number of tension members 16, but the number is not limited to a plurality, and a single material, that is, one material can be embodied as the number of tensile materials.

  However, if there are a plurality of tension members 16 as in this embodiment, it is possible to securely hold the intubation tube 14 due to the tension of the tension members, and thereby the stability thereof is reliably improved. The collapse of the posture of the intubation can be prevented more reliably.

  And by making the tension | tensile_strength material 16 into multiple pieces, since the uniform reinforcement | strength around an inner intubation can be ensured easily, the certainty of reinforcement as the sheath pipe repair structure 10 is fully improved.

  Further, in this embodiment, the support devices 22 and 45 with the tension release mechanism are embodied as a combination of the substrate 26, the movable plate 28, and the telescopic screw rod 30, but the fixing filler 48 is consolidated. It is sufficient to have a function of enabling the tension of the corresponding extended ends 16a and 16b of the tensile material to be released later, and the present invention is not limited to this configuration.

  Furthermore, in this embodiment, a PC steel wire is illustrated as the tensile material 16. Thus, if it is the structure of this invention which arrange | positions the tension | tensile_strength material 16 along the outer peripheral surface of the intubation tube 14, it will become possible to utilize a high strength PC steel wire as a tension | tensile_strength, and uses this PC steel wire. By doing so, since the strong tension force is obtained reliably, high rigidity in the sheath pipe in the sheath pipe repair structure 10 can be appropriately secured under the strong tension force.

  The above-described embodiments are for explaining the present invention, and do not limit the present invention. All modifications, alterations, and the like within the technical scope of the present invention are included in the present invention. It goes without saying that it is done.

  The present invention is not limited to the sewage pipe but may be applied to, for example, a water pipe, a gas pipe, or a sheath pipe for other piping. Further, in this embodiment, it is embodied as an existing sheath tube, but it goes without saying that it can be applied to a new sheath tube.

It is the schematic plan view of the one part fracture | rupture which shows 1 process in the intubation mounting method of this invention. It is a general | schematic fragmentary perspective view of an internal intubation. It is a longitudinal cross-sectional view along line AA of FIG. It is a schematic plan view of the partial fracture | rupture which shows the sheath pipe repair structure of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Sheath pipe repair structure 12 Sheath pipe 14 Inner intubation 16 Tensile material 18 Bundling means 48 Fixing material for fixation

Claims (8)

The inner intubation tube inserted in a predetermined sheath tube is injected into the space between the inner tube and the sheath tube, and is fixed to the sheath tube in an integrated manner under the consolidation of the filled filling material. In the intubation mounting method to be mounted,
After inserting the inner tube into the sheath tube, a predetermined number of tensile members disposed along the axis around the outer peripheral surface of the inner tube by bundling with the bundling means arranged at a plurality of positions, and then the sheath tube By positioning and holding between the ends of each end of the tube, the intubation tube is positioned with respect to the sheath tube, and the fixing filler is injected into and filled in the gap between the inner tube and the sheath tube. A method for attaching an intubation tube, wherein a tensioned tension member is integrally consolidated around an outer peripheral surface of the inner tube.   The intubation tube mounting method according to claim 1, wherein a plurality of the tension members are used.   Support of one extension end by a support device with a tension release mechanism arranged at least outside one end of the sheath tube, and traction of the other extension end by a tension jack arranged outside the other end of the sheath tube. Originally, the tension material is tensioned, and the tension material is held in the tension state by holding the other extension end of the tension material by the support device with a tension release mechanism arranged outside the tension jack. The intubation mounting method according to claim 1 or 2.   As the support device with tension release mechanism arranged outside each end of the sheath tube and the jack for tension arranged outside the other end of the sheath tube, the substrate and the movable plate are aligned with the sheath tube. The method for mounting an intubation tube according to claim 3, wherein a concentric insertion hole is provided.   The inner tube installation method according to any one of claims 1 to 4, wherein the tensile material is a PC steel wire. An inner tube inserted into a predetermined sheath tube is injected into the space between the inner tube and the sheath tube, and is fixed to the sheath tube integrally under the consolidation of the filling material for fixation. In the sheath repair structure,
A predetermined number of tension members, which are arranged on the outer peripheral surface of the inner tube under the bundling by the bundling means arranged at a plurality of spaced positions and position the inner tube in the sheath tube by its tension, are inserted into the inner tube. A sheath tube repair structure characterized in that the fixing filler filled and injected into the space between the tube and the sheath tube is consolidated and left in the tensioned state integrally around the inner tube. .   The sheath pipe repair structure according to claim 6, wherein the tensile material is plural. The sheath pipe repair structure according to claim 6 or 7, wherein the tensile material is a PC steel wire.

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