JP2018155280A - Repair structure of existing pipe conduit and repair member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a pipe conduit comprising a repair member to function as a self-supporting pipe, even in a case where a cavity occurs between an inner peripheral surface of the pipe conduit and the repair member.SOLUTION: A repair structure has: a repair member 10 that has a flexibility and is constituted in a long shape, at one end part in a width direction of which a locking projection 12a is formed, at the other end part of which a fitting concave part 12b is formed, and in which the locking projection is fitted into the fitting concave part and spirally wound on an inner surface of an existing pipe conduit 1; a cylindrical body 19 arranged along a longitudinal direction on one surface 10a of the repair member, and integrated with the repair member; and hardening agent 25 with which the cylindrical body is filled, and then that is hardened.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a repair structure in which a long repair member is arranged on the inner surface of a deteriorated existing pipeline and repaired, and a repair member used when realizing the repair structure.

  At present, many pipes such as sewer pipes, industrial water pipes, and agricultural water pipes are laid and used. These existing pipelines will deteriorate as the period of use increases, so that concrete aggregates may be exposed on the inner surface, and the pipes that make up the existing pipeline will be pulled out at the seam due to the effects of land subsidence and earthquakes. Misalignment may occur. As described above, there is a possibility that the strength of the deteriorated existing pipe line may be reduced, and it is general to repair the inner peripheral surface by lining it.

  Many proposals have been made and implemented as repair methods for repairing existing pipelines. One of them is a method of repairing by extending a long repair member into a pipeline to be repaired, winding it in a spiral, and arranging it facing the inner peripheral surface of an existing pipeline (for example, Patent Document 1). In this method, after the repair member is arranged in the existing pipeline, the gap formed between the inner peripheral surface of the existing pipeline and the repair member is filled and cured, and the cured cement is passed through. The existing pipeline and the repair material are integrated, thereby restoring the strength of the pipeline.

  One of the repair members is formed as a smooth surface, a plurality of ribs are erected along the longitudinal direction on the other surface, and a fitting portion made of a pair of male and female at both end portions in the width direction Is formed. This repair member is conveyed to the repair position of the existing pipe line while being wound around the bobbin.

  And while inserting the end part of the longitudinal direction of a repair member into an existing pipe line from a manhole and unwinding it, it winds spirally and makes it adjoin, and a pipe line which consists of a repair member Can be configured. After the pipeline consisting of the repair member reaches the target repair part, the gap between the inner peripheral surface of the existing pipeline and the repair member is filled with fluid cement milk so that the target existing Repairs to the pipeline can be performed.

Japanese Patent No. 3516784 (Japanese Patent Laid-Open No. 09-096377)

  In the above-described existing pipe line repairing method, it is difficult to completely fill the gap formed between the inner peripheral surface of the existing pipe line and the repair member, and there is a problem that a gap is inevitably formed. There is. And when a space | gap arises in this way, integration with an existing pipe line and a repair member cannot be aimed at, but there exists a possibility that the pipe line which consists of a repair member cannot function as a self-supporting pipe.

  An object of the present invention is to provide a repair structure in which a pipe made of a repair member can function as a self-supporting pipe even if a gap is generated between the inner peripheral surface of an existing pipe to be repaired and the repair member. It is to provide a repair member.

  In order to solve the above-mentioned problems, an existing pipeline repair structure according to the present invention is configured to have a long and flexible shape, and a locking projection is provided at one end in the width direction at the other end. A repairing member formed with a fitting recess for fitting the locking projection, and spirally wound around the inner surface of an existing pipeline to be repaired by fitting the locking projection into the fitting recess, and the repairing member A cylindrical body that is arranged along the longitudinal direction on one of the surfaces and integrated with the repair member, and a curing agent that is filled and cured in the cylindrical body.

  In the repair structure of the existing pipe line, a plurality of holes are formed in the cylindrical body along the longitudinal direction, and the hardening agent filled in the cylindrical body is used for the inner peripheral surface of the existing pipe line and the repair material. It is preferable that the gap formed between the two is also filled and cured.

  In addition, the repair member according to the present invention is formed on the long main body portion having flexibility, the locking protrusion formed on one end portion in the width direction of the main body portion, and the other end portion. It has a fitting recessed part which fits this latching protrusion, and the cylinder integrated with this main-body part while being arrange | positioned along the longitudinal direction on one surface of the said main-body part.

  In the repair member, it is preferable that the cylindrical body has a plurality of blade-shaped protrusions formed along the longitudinal direction on the outer peripheral surface, and a hole is formed between the blade-shaped protrusions of the cylindrical body. More preferably.

  Further, in the repair member, a plurality of ribs project along the longitudinal direction on one surface of the flexible elongated main body, and the cylindrical body is interposed through the ribs. It is preferable that they are integrated.

  In the repair structure of the existing pipe line according to the present invention, the locking protrusion and the fitting recess that are engaged with each other are formed at both ends in the width direction of the repair member. It can be tightly wound spirally around the inner surface of the pipeline. Moreover, the rigidity and intensity | strength of the pipe | tube which consists of a repair member which has flexibility can be made high with the hardening | curing agent with which the cylinder integrated to one side of the repair member was filled and hardened | cured.

  For this reason, even if a gap is formed between the inner peripheral surface of the existing pipe line and the outer peripheral surface of the repair member, the pipe made of the repair member wound spirally exhibits high rigidity and functions as a self-supporting pipe. The existing pipe line can be repaired by the repair member.

  Further, when a plurality of holes are formed in the cylindrical body along the longitudinal direction, when the cylindrical body is filled with a curing agent, the filled curing agent passes through the hole and the inner peripheral surface of the existing pipe. It is also ejected into the gap formed between the repair members. For this reason, in addition to filling the inside of the cylinder with the curing agent, the gap can also be filled with the curing agent, and the existing pipe line and the repair material can be integrated via the curing agent.

  Further, in the repair member according to the present invention, since the locking projection and the fitting recess are formed at both ends in the width direction of the main body, a long repair material is inserted into the existing pipe line and spiraled. It can be installed along the inner surface of the existing pipeline by fitting the locking projection into the fitting recess while being wound around. In particular, since the cylindrical body is integrated with the main body, the cylindrical body can be installed along with the installation of the repair member.

  In addition, the cylindrical body is formed in a cylindrical shape, and a plurality of blade-like protrusions are formed on the outer peripheral surface along the longitudinal direction so that the tube body is integrated with the main body portion via the blade-like protrusions or an existing pipe line. It can arrange | position in contact with the internal peripheral surface. Further, by forming a plurality of holes between the blade-like projections of this cylindrical body, the curing agent filled in the cylindrical body can be ejected between the blade-like projections, and the inner circumference of the existing pipe line The gap formed between the surface and the repair member can be reliably filled with the curing agent.

  Further, when a plurality of ribs project along the longitudinal direction on one surface of the flexible long main body, and the cylindrical body is integrated via the ribs. Can secure a gap between the inner surface of the existing pipe line and the repair member.

It is a figure explaining the repair structure concerning a present Example. It is a figure explaining the principal part of the repair structure which concerns on a present Example. It is a figure explaining the principal part of the other example of repair structure. It is a figure explaining the principal part of the further another example of repair structure. It is a figure explaining the principal part of the further another example of repair structure. It is a figure explaining the structure of a repair member. It is a figure explaining the structure of the repair member which concerns on another example.

  Hereinafter, the repair structure and repair member of the existing pipe line (hereinafter referred to as “pipe line”) according to the present invention will be described. The repair structure of the present invention is a pipe line represented by, for example, a sewer pipe, which is advantageous when used for repairing a pipe line whose strength has been reduced due to long-term use or whose inner peripheral surface has deteriorated. is there. In particular, the repair member is configured such that a locking projection is formed at one end in the width direction of the elongated repair material, a fitting recess is formed at the other end, and the cylinder is integrated.

  For this reason, it is possible to make it closely connect by fitting a latching protrusion in a fitting recessed part, spirally winding a repair member on the inner surface of a pipe line. And even if a gap is formed between the pipeline and the repair member, the curing agent filled in the cylinder is cured, so that the cylinder exhibits high rigidity and strength, and over the entire length of the pipeline. It is possible to exhibit strength without unevenness.

  In the present invention, the use of the pipeline to be repaired is not limited, and can be applied to a sewerage pipeline, an agricultural water pipeline, or an industrial water pipeline. Further, the material of the pipe constituting the pipe to be repaired is not limited, and can be preferably applied to a pipe constituting the pipe, such as a pipe made of concrete pipe or ceramic pipe. It is.

  In the initial state, the main body and the cylinder constituting the repair member are flexible. For this reason, the cross-sectional shape of the pipe is not limited, and can be applied to a pipe made of a concrete pipe having a circular cross section, a box culvert having a square cross section, or the like.

  Further, the inner peripheral surface of the pipe to be repaired does not necessarily need to be the inner surface itself of the existing pipe constituting the pipe. In other words, the inner surface where the deteriorated part is removed with a flaw, or a spray layer such as mortar or resin-based mortar is provided on the inner surface where the deteriorated part is removed with flaws, as appropriate depending on the deterioration state of the inner surface of the pipeline to be repaired The inner peripheral surface such as the surface is also targeted. Therefore, the inner peripheral surface of the pipe line to be repaired in the following description is the inner peripheral surface of the existing pipe itself, the lower surface obtained by deleting the inner peripheral surface of the existing pipe with scissors, and the inner peripheral surface of the existing pipes deleted with scissors It includes a spray surface provided with a spray layer on the surface.

  In the present invention, the cylinder integrated with the main body constituting the repair member is not limited by what means it is integrated, but the cylinder is substantially the main body of the repair member. It is good if it is integrated and does not leave the repair member when repairing the pipeline. For this reason, the cylindrical body may be integrally formed with the main body, or may be integrated by adhesion or welding. Further, the main body portion may be provided with a holding portion capable of holding the cylindrical body, and may be integrated by holding the cylindrical body via the holding portion.

  Further, the shape of the cylindrical body integrated with the main body part constituting the repair member is not limited, and a cylindrical body having a shape such as a polygonal cylindrical body including a quadrangle, a cylindrical body, and a bowl-shaped cylindrical body, good. When the cylindrical body is a rectangular cylindrical body or a bowl-shaped cylindrical body, it is possible to achieve integration by sharing one piece of the cylindrical body with the main body of the repair member.

  When the cylindrical body is a cylindrical body, it is possible to achieve integration by sharing a part of the circumference with the main body of the repair member. It is also possible to form a plurality of blade-like protrusions on the outer peripheral surface of the cylinder, and to integrate with the main body through these protrusions. In particular, when a plurality of ribs project from the main body portion constituting the repair member, it is possible to achieve integration with the main body portion of the cylindrical body via the ribs.

  For example, a cylindrical body having an outer diameter that is equal to or slightly larger than the dimension of a pair of opposing ribs among a plurality of ribs and having flexibility is disposed between the ribs. By sandwiching, the cylindrical body can be integrated with the main body portion via the rib. In addition, a locking projection is formed on the free ends of the plurality of ribs in a direction parallel to the main body portion, and the cylinder is disposed between the ribs and locked by the locking projection, so that the ribs are interposed. It is also possible to integrate the cylindrical body with the main body. In this case, when a plurality of blades are formed on the outer peripheral surface of the cylindrical body, the blades can be engaged with the locking projections of the ribs to be integrated with the main body.

  The number of cylinders integrated with the repair member is not limited, and may be one or more, two or three. It is preferable to set appropriately according to the width dimension of the repair member.

  The cylinder may have openings formed only at both ends in the longitudinal direction. In this case, the filled curing agent is cured inside the cylinder, and the rigidity and strength of the cylinder can be improved over the entire length. And the rigidity and intensity | strength of a cylinder improve and it becomes possible to reinforce the repair member integrated with this cylinder and to exhibit the function as a self-supporting pipe.

  As described above, the repair member can be a self-supporting tube by curing the curing agent filled in the cylinder. However, even in this case, it is a matter of course that cement milk may be injected into the gap formed between the inner peripheral surface of the pipe line and the repair member as in the related art.

  Further, a plurality of holes may be formed in the cylindrical body along the longitudinal direction. In this case, the filled curing agent is injected through a plurality of holes into a gap formed between the inner peripheral surface of the pipeline and the main body of the repair material. For this reason, it becomes possible to implement | achieve the improvement of the rigidity and intensity | strength of a repair member with hardening of a hardening | curing agent, and integration of a pipe line and a repair member through the hardening | curing agent inject | poured into the clearance gap.

  Any curing agent may be used as long as it has a high fluidity when not cured and can exhibit high rigidity and strength when cured. Examples of such a curing agent include a cement-based curing agent and a resin-based curing agent, and any of them can be preferably used.

  Next, the repair structure according to the present embodiment will be described with reference to FIGS. In the present embodiment, as shown in the drawing, the pipe line 1 is configured as a sewer pipe line in which a plurality of concrete pipes are laid in a longitudinal direction between manholes 2 and 2.

  Further, in the repair structure according to the present embodiment, the repair member 10 formed by integrating the cylindrical body 19 is spirally wound around the inner peripheral surface of the pipe line 1, and the rigidity and strength of the pipe are improved to improve the self-supporting pipe. It is to function as.

  On the inner surface side of the inner peripheral surface 1 a of the pipe line 1, the repair member 10 in which the cylindrical body 19 is integrated is arranged in a wound state. The cylindrical body 19 is filled with a curing agent 25, and the rigidity and strength of the cylindrical body 19 are improved by the curing of the curing agent 25, and accordingly, the rigidity of the repair member 10 integrated with the cylindrical body 19. By improving the strength, it is possible to repair the pipeline 1 while exhibiting the function as a self-supporting pipe.

  As shown in FIG. 2, the repair member 10 has a preset width dimension and is formed in a long shape having flexibility. The repair member 10 has a long main body portion 10a, a cylindrical body 19 is formed on one surface 10b of the main body portion 10a, and the other surface 10c is configured as a smooth surface. Further, a locking projection 12a is formed over the entire length at one end in the width direction of the main body 10a, and a locking projection 12a and a groove-like fitting recess 12b are formed over the entire length at a predetermined position on the other side. Is formed.

  The cylindrical body 19 has a cross section having a preset dimension formed in a cylindrical shape, and is integrally formed by being integrally formed with the main body portion 10a. The diameter and thickness of the cylindrical body 19 are not limited, and are appropriately set according to conditions such as the diameter of the pipe line 1 to be repaired.

  In the repair member 10 configured as described above, when the repair member 10 is spirally wound so as to face the inner peripheral surface 1a of the pipe line 1 and the end portions are in close contact with each other, The stop protrusion 12a and the fitting recess 12b face each other. And the repairing member 10 can hold | maintain the helical winding state by making the latching protrusion 12a fit to the fitting recessed part 12b.

  The cylindrical body 19 is filled with a curing agent 25. Any curing agent 25 may be used as long as it can exhibit high rigidity and strength when filled into the cylinder 19 and cured. For example, the curing agent 25 can be selectively used from the plurality of curing agents described above. .

  The procedure for constructing the above pipe repair structure will be briefly described. The long repair member 10 in which the cylindrical body 19 is integrated is wound around a reel in advance and conveyed to a construction site. At the construction site, the repair member 10 is rewound from one manhole 2 in the pipe line 1, and the continuous protrusions 12 a of the repair member 10 are fitted into the fitting recesses 12 b while being spirally wound. Insert inside.

  The repair member 10 is moved toward the other manhole 2 so as to face the inner peripheral surface 1 a of the pipe line 1, and the repaired member with respect to the pipe line 1 arrives at the other manhole 2. 10 is arranged. At this time, a gap 3 is formed between the inner peripheral surface 1 a of the pipe line 1 and the cylindrical body 19 of the repair member 10.

  As described above, after the repair member 10 wound spirally between the manholes 2 and 2 in the pipe 1 is disposed, the curing agent 25 is pressure-filled from one side of the cylindrical body 19. When the curing agent is sufficiently cured after a predetermined curing period, the cylindrical body 19 arranged in a spiral shape exhibits sufficient rigidity and strength, and the rigidity of the repair member 10 in which the cylindrical body 19 is integrated. And improve strength.

  In the present embodiment configured as described above, the repair member 10 formed in a spiral shape can function as a self-supporting tube having high rigidity and strength. However, as a matter of course, the gap 3 may be filled with cement milk or the like as in the prior art.

  Next, another example of the pipe repair structure will be described with reference to FIG. In the figure, the same reference numerals are given to the same parts or the parts having the same functions as those of the above-described embodiment, and the description thereof is omitted.

  In the present embodiment, the cylindrical body 20 constituting the repair member 10 has a square section formed by a pair of standing pieces 20a and a top end piece 20b connecting the tops of the standing pieces 20a. The bottom is shared with the main body 10 a of the repair member 10. Therefore, the cylindrical body 20 is formed so as to be firmly integrated with the repair member 10.

  The repair member 10 formed with the rectangular tube 20 as described above is spirally wound so as to face the inner peripheral surface 1a of the pipe 1, and the inside of the tube 20 is filled with a curing agent 25. It is possible to exhibit high rigidity and strength as the curing agent 25 is cured.

  Next, still another example of the pipe repair structure will be described with reference to FIG. In the present embodiment, a plurality of ribs 11 are formed over the entire length in the longitudinal direction on the surface 10b of the main body 10 constituting the repairing member 10, and the free end of the rib 11 has a lateral direction (the width of the main body 10a). Projections 11a projecting on both sides of the direction) are formed. An inclined piece 13 is formed at the end of the fitting recess 12b, which is inclined in a direction away from the surface 10b.

  The protrusion 11a formed at the free end of the rib 11 improves the rigidity of the rib 11, and when the repair member 10 is spirally wound inside the pipe 1, it is formed at the end of the fitting recess 12b. It has a function of locking the free end of the formed inclined piece 13. In this way, by locking the free end of the inclined piece 13 to the base of the protrusion 11a of the rib 11, it is possible to hold the wound repair members 10 in a more reliable winding state.

  The cylindrical body 21 is formed having a long cylindrical main body 21a and a plurality of blades 21b formed on the outer periphery of the main body 21a along the longitudinal direction. The cylindrical body 21 may be integrated by the body portion 21a being integrally formed with the body portion 10a of the repair member 10, and the blade 21b is integrated with the body portion 10a by means of integral molding, welding, adhesion, or the like. May be.

  Further, the cylindrical body 21 is not necessarily integrated with the main body portion 10 a of the repair member 10 by means of integral molding, welding, or the like, and may be integrated by being locked to the rib 11. In this case, the cylinder body 21 may be formed as a cylinder body independent of the main body portion 10 a of the repair member 10.

  In the present embodiment, the blades 21 b formed on the main body 21 a of the cylindrical body 21 are used when the cylindrical body 21 is arranged along the rib 11 of the repair member 10 and integrated. That is, the tip of the blade 21b contacts the corner where the rib 11 and the main body 10a intersect, and the corner where the rib 11 and the protrusion 11a intersect, so that the blade 21b is integrated with the main body 10a via the rib 11. It is possible to maintain the arrangement position. Accordingly, the dimensions of the tip portions of the blades 21 b are set corresponding to the distance of the rib 11.

  In the present embodiment, four blades 21b of the cylindrical body 21 are formed. However, the number is not limited to this number, and at least better. However, it is necessary that at least two sheets are formed.

  As described above, when the cylindrical body 21 is configured as an independent cylindrical body, the cylindrical body 21 is preferably formed of a synthetic resin such as polyethylene or vinyl chloride having the same degree of flexibility as the repair member 10. For this reason, even if the cylinder 21 is not firmly integrated with the repair member 10 by means such as welding or adhesion, the repair member 10 is spirally wound by the blade 21b being locked to the protrusion 11a of the rib 11. As it is attached, it will be wound together.

  Next, still another example of the pipe repair structure will be described with reference to FIG. In the repair structure according to the present embodiment, a plurality of holes 21c are formed in the main body portion 21a of the cylindrical body 21 over the entire length in the longitudinal direction. For this reason, after the repair member 10 is spirally wound around the inside of the pipe line 1 and placed in the cylinder 21 with the curing agent 25, the filled curing agent 25 leaks into the gap 3 from the hole 21c and It is injected into the gap 3.

  Therefore, when the repair member 10 according to the present embodiment is used, the curing agent 25 is also filled in the gap 3 formed between the inner peripheral surface 1a of the pipe line 1 and the cured curing agent 25 is It becomes possible to connect the repairing member 10 wound spirally with the pipe line 1 via the via. For this reason, it is possible to repair the pipeline 1 with high strength.

  Next, the configuration of the repair member 10 will be described with reference to FIG. The repair member 10 shown in the figure has a hole 20c formed in the top end piece 20b of the cylindrical body 20 constituting the repair member 10 described in FIG. 3, and leaks from the hole 20c when filled with a curing agent. It is configured to obtain.

  Next, another example of the repair member A will be described. The repair member 10 shown in FIG. 7 has a dimension in which the outer diameter of the cylindrical body 22 is substantially equal to the distance of the rib 11. Even in such a cylindrical body 22, a part of the outer peripheral surface is arranged in a state where it is locked to the protrusion 11 a of the rib 11 and integrated along the rib 11, and arranged without being detached even during construction. It is possible to maintain the state. The cylinder 22 may be a simple cylinder, and a plurality of holes 22c may be formed in the longitudinal direction.

  The pipe repair structure of the present invention can be used not only for sewer pipes but also for industrial water pipes and agricultural water pipes.

DESCRIPTION OF SYMBOLS 1 Pipe line 1a Inner peripheral surface 2 Manhole 3 Crevice 10 Repair member 10a Main part 10b, 10c Surface 11 Rib 11a Protrusion 12a Locking protrusion 12b Fitting recessed part 13 Inclined piece 19, 20, 21, 22
Cylindrical body 20a Standing piece 20b Top end piece 20c Hole 21a Body portion 21b Blade 21c, 22c Hole 25 Curing agent

Claims (6)

A locking projection is formed on one end in the width direction and a fitting recess is formed on the other end to fit the locking projection. A repair member spirally wound around the inner surface of the existing pipeline to be repaired by fitting into the fitting recess;
A cylindrical body arranged along the longitudinal direction on one surface of the repair member and integrated with the repair member;
A curing agent filled in the cylinder and cured;
A repair structure of an existing pipeline characterized by having   A plurality of holes are formed in the cylindrical body along the longitudinal direction, and the curing agent filled in the cylindrical body is also filled into a gap formed between the inner peripheral surface of the existing pipe line and the repair material. The repair structure for an existing pipe line according to claim 1, wherein the pipe pipe is hardened. An elongated main body having flexibility;
A fitting protrusion formed at one end in the width direction of the main body and a fitting recess for fitting the locking protrusion formed at the other end;
A cylindrical body that is disposed along the longitudinal direction on one surface of the main body and integrated with the main body;
The repair member characterized by having.   The repair member according to claim 3, wherein the cylindrical body is formed in a cylindrical shape, and a plurality of blade-shaped protrusions are formed on the outer peripheral surface along a longitudinal direction.   The repair member according to claim 4, wherein a hole is formed between the blade-like protrusions of the cylindrical body.   A plurality of ribs projecting along the longitudinal direction on one surface of the flexible main body having flexibility, and the cylindrical body is integrated through the ribs. The repair member according to claim 3.

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