JP2005262573A - Tube regeneration member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tube regeneration member which can enhance the integration between a strip member and a reinforcing member engaged with the strip member and secure excellent rigidity in order to improve the strength of a spiral tube formed by the tube regeneration member. <P>SOLUTION: In a lengthy strip member 15, a plurality of ribs 11 are set on one surface and engagement parts 12 are formed in both side edge parts, and belt-like reinforcing members 2 are engaged between the ribs 11. The apex part of the reinforcing member 2 is arranged to straddle at least one rib 11 and folded/formed to be fitted to the adjacent rib 11 to the rib 11. In the reinforcing member 2, holes 21 for introducing a back-filling material are formed and arranged in an approximately middle part in the width direction in each surface of the folded/formed reinforcing member 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pipe rehabilitation member for lining an inner peripheral surface of an existing pipe to rehabilitate the pipe.

  Conventionally, as a method of rehabilitating an old pipe, a pipe rehabilitation member is spirally wound around the inner peripheral surface of an existing pipe, and the side edges adjacent to each other are lined together to line up the existing pipe. A pipe rehabilitation method for forming a spiral pipe inside is known.

For example, Patent Document 1 discloses a method for rehabilitating an aging pipe in which a lining layer is constructed by a strip-shaped member having a rib having a T-shaped cross section on one side. In this type of rehabilitation method, the belt-like member is provided with protruding ridges and concave ridges on both side edges, and the adjacent ridges and concave ridges are fitted by winding this belt-like member. The strip-shaped members are connected to form a spiral tube. Further, in such a band-shaped member, a reinforcing member having a W-shaped cross section is fitted between adjacent ribs, and the strength of the spiral tube to be formed is compensated.
JP 2000-213053 A (page 6 and FIG. 3)

  In the band-shaped member, both end edges of the reinforcing member formed in the W-shaped cross section are respectively engaged with the tops of the ribs having the T-shaped cross section to be integrated with the band-shaped member, thereby increasing the rigidity of the band-shaped member. However, the band-shaped member and the existing pipe are filled with a backfilling material such as mortar between them to be integrated, but this backfilling material does not flow between the band-shaped member and the reinforcing member. Therefore, in order to further increase the strength of the spiral tube, it is desirable to fill the backfill material between the belt-shaped member and the reinforcing member to further integrate the belt-shaped member and the reinforcing member.

  The present invention has been made in view of the above circumstances, and in order to further increase the strength of the helical tube formed by the tube rehabilitation member, the belt member and the reinforcing member fitted to the belt member are integrated. The purpose of the present invention is to provide a pipe rehabilitation member that can improve the efficiency and ensure excellent rigidity.

  In order to solve the above-described problems, the present invention provides a long belt-like member in which a plurality of ribs are provided upright on one side and engaging portions are formed on both side edges, and the existing pipe is provided with the rib surface outside. It is wound around the inner peripheral surface of the belt in a spiral manner, and by engaging the engaging portions of the adjacent belt-shaped members, it is lined, and a backfilling material is injected between the belt-shaped member and the existing pipe. In a pipe rehabilitation member for rehabilitating an existing pipe, a band-shaped reinforcing member is fitted between ribs, and the band-shaped reinforcing member is provided with a plurality of inflow holes for backfilling material.

  According to the present invention, the backfilling material filling the space between the belt-shaped member and the existing pipe also flows between the belt-shaped reinforcing member and the belt-shaped member through the inflow hole provided in the belt-shaped reinforcing member. Can be improved.

  Further, the pipe rehabilitation member according to the present invention is arranged so that the top portion of the belt-like reinforcing member straddles at least one rib, and is bent so as to be able to be locked to the rib adjacent to the rib. It is a feature.

  The size of the belt-like member and the number of standing ribs are appropriately selected for the pipe rehabilitation member in accordance with the inner diameter of the existing pipe, and the belt-like reinforcing member is disposed so as to straddle at least one rib. The strength and rigidity of the formed helical tube can be increased by being bent so as to be able to be locked to the rib adjacent thereto.

  Moreover, the present invention is characterized in that, in the above-described pipe rehabilitation member, a predetermined interval is provided between the top portion of the belt-like reinforcing member and the top portion of the rib. Accordingly, the backfilling material can be filled through the inflow hole between the top of the belt-like reinforcing member and the top of the rib, and the integration of the belt-like reinforcing member and the belt-like member can be further enhanced.

  Furthermore, the pipe rehabilitation member of the present invention is characterized in that the inflow holes provided in the belt-like reinforcing member are arranged at substantially the center in the width direction on each surface of the bent belt-like reinforcing member. .

  Thereby, since the inflow hole is formed in the band-shaped reinforcing member without unevenness in the pipe rehabilitation member, it is possible to ensure a predetermined strength in the band-shaped reinforcing member, and to reduce the rigidity between the band-shaped reinforcing member and the band-shaped member. Integration can be enhanced.

  By the pipe rehabilitation member of the present invention, the backfilling material filling the space between the belt-like member and the existing pipe also flows between the belt-like reinforcement member and the belt-like member through the inflow hole provided in the belt-like reinforcement member. Can be improved. Therefore, the rigidity of the pipe rehabilitation member can be improved and the strength of the helical tube formed by the pipe rehabilitation member can be further increased.

  Hereinafter, the best mode for carrying out a pipe rehabilitation member according to the present invention will be described with reference to the drawings.

  1 to 3 show an embodiment of a pipe rehabilitation member according to the present invention, FIG. 1 is a sectional view of the pipe rehabilitation member, FIG. 2 is a plan view of a belt-like reinforcing member provided on the pipe rehabilitation member, and FIG. FIG.

  The pipe rehabilitation member 1 has a long belt-like member 15, a plurality of ribs 11 are erected on one side, and engaging portions 12 are formed on both side edges. As shown in FIG. 1, the ribs 11 of the belt-like member 15 are formed in a T-shaped cross section, and three ribs 11 are provided near the center of the belt-like member 15 at a predetermined interval. One of the engaging portions 12 at both side edges is an engaging convex portion 12a, and the other is an engaging concave portion 12b that can engage with the engaging convex portion 12a.

  In the vicinity of the engaging convex portion 12a, when the engaging portions 12 of the adjacent belt-like members 15 are engaged with each other, the engaging concave portion 12b is fixed to the belt-like member 15 and the watertightness between the two is ensured. A sealing material 14 is attached. Moreover, the side edge part near the engaging recessed part 12b of the strip | belt-shaped member 15 is a latching | locking part latched to the rib 11 (11c) of the edge part of the adjacent strip | belt-shaped member 15 when the engaging parts 12 are engaged with each other. 13 protrudes diagonally outward.

  In the pipe rehabilitation member 1, a band-shaped reinforcing member 2 is fitted between the ribs 11. In the illustrated embodiment, the reinforcing member 2 is formed in a substantially trapezoidal cross-section so that the top part straddles the rib 11b in the center of the belt-like member 15, and the reinforcing member 2 is interposed between the top part of the reinforcing member 2 and the top part of the rib 11b. A predetermined interval is secured. Further, both end edges of the reinforcing member 2 are bent so as to be able to be engaged with the respective top portions of the two ribs 11a and 11c adjacent to the central rib 11b.

As shown in FIG. 2, the reinforcing member 2 has a plurality of inflow holes 2 for allowing the backfill material to flow in.
1 is provided. The inflow holes 21 are formed in a long hole shape, and are arranged at substantially the center in the width direction on each surface of the reinforcing member 2 that is bent.

  The inflow hole 21 is provided with a size that allows the backfill material to pass through. For example, when the thickness of the reinforcing member 2 is 0.1 mm to 3.0 mm, the hole width is 0.5 mm to 3.0 mm. It is preferably formed within a range of 30 mm and a hole length of 0.5 mm to 150 mm. Note that, in the illustrated embodiment, the inflow hole 21 is not necessary on the surface where the reinforcing member 2 is in contact with the belt-shaped member 15, and thus is not particularly provided.

  In the present invention, the material of the belt-like member 15 is preferably a thermoplastic resin such as hard vinyl chloride, polyethylene, or polypropylene. The material of the reinforcing member 2 is preferably, for example, polyvinyl chloride, fiber reinforced resin, resin stretched material, etc., in addition to metals such as iron, stainless steel, and hot dip galvanized steel sheet.

  The pipe rehabilitation member 1 thus rehabilitated is spirally wound around the existing pipe with the rib surface on the outer side so that the top of each rib 11 is on the inner peripheral surface side of the existing pipe. Then, by winding, the engaging convex portion 12a and the engaging concave portion 12b of the adjacent band-like member 15 are engaged and joined to form a helical tube having a cylindrical shape slightly smaller than the inner diameter of the existing tube. As a result, the inner peripheral surface of the existing pipe is lined. A backfilling material such as mortar is injected between the belt-like member 15 and the existing pipe, and the existing pipe and the spiral pipe are brought into close contact with each other, and the pipe is rehabilitated.

  At this time, the backfilling material also flows between the reinforcing member 2 and the belt-like member 15 through the inflow hole 21 of the reinforcing member 2. As a result, the backfilling material is uniformly filled between the reinforcing member 2 and the belt-like member 15 without unevenness, and the integration of both can be enhanced. Further, since the integration of the reinforcing member 2 and the belt-like member 15 is enhanced in this way, the strength and rigidity of the formed helical tube can be improved, and the reinforcing member 2 can be protected from corrosion.

  In addition, the pipe rehabilitation member 1 according to the present invention is not limited to the cross-sectional shape of the reinforcing member 2 as described above, but engages with the ribs 11 at both sides and the ribs 11 at the top (center portion). Any shape may be used as long as a predetermined interval can be maintained between the two.

  That is, for example, in the case of the band-shaped member 15 having a shape as shown in FIG. 4, the reinforcing member 2 is formed in a trapezoidal shape having a wide cross-sectional shape at the top, and two ribs 11 near the center of the band-shaped member 15 are formed. It may be arranged so as to straddle and both sides may be substantially V-shaped. Further, as shown in FIG. 5, the reinforcing member 2 may have two trapezoidal tops formed so as to straddle the two ribs 11 near the center. In any form, the backfilling material is uniformly filled between the strip-shaped members 15 by the inflow holes 21 provided in the reinforcing member 2, thereby enhancing the integration of the reinforcing member 2 and the strip-shaped member 15. be able to.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used as a pipe rehabilitation member for lining an inner peripheral surface of an existing pipe to rehabilitate an aged pipe rod.

It is sectional drawing of the pipe renovation member which concerns on this invention. It is a top view of the strip | belt-shaped reinforcement member provided in the pipe renovation member which concerns on this invention. It is sectional drawing of the width direction of FIG. It is sectional drawing of the pipe renovation member which concerns on this invention. It is sectional drawing of the pipe renovation member which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pipe rehabilitation member 11 Rib 12 Engagement part 12a Engagement convex part 12b Engagement recessed part 13 Locking part 14 Sealing material 15 Band-shaped member 2 Band-shaped reinforcement member 21 Inflow hole

Claims (4)

A long belt-like member having a plurality of ribs standing on one side and engaging portions formed on both side edges is spirally wound around the inner peripheral surface of an existing pipe with the rib surface facing outside. In the pipe rehabilitation member that reinforces the existing pipe by injecting a backfilling material between the belt-like member and the existing pipe by engaging the engaging portions of the adjacent band-like members by turning,
A pipe retreading member characterized in that a strip-shaped reinforcing member is fitted between the ribs, and a plurality of inflow holes for backfill material are provided in the strip-shaped reinforcing member.   2. The pipe according to claim 1, wherein the belt-shaped reinforcing member is disposed so that a top portion thereof straddles at least one rib, and is bent so as to be able to be locked to a rib adjacent to the rib. Rehabilitation material.   The pipe rehabilitation member according to claim 2, wherein a predetermined interval is provided between the top of the belt-like reinforcing member and the top of the rib. The inflow hole provided in the belt-shaped reinforcing member is arranged at a substantially central portion in the width direction on each surface of the belt-shaped reinforcing member formed by bending. Pipe rehabilitation member.

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