JP2018193732A - Method and structure for rehabilitating existing waterway structure, and rehabilitation pipe for existing waterway structure - Google Patents

Abstract

To prevent leakage of a back-filling material into the inner periphery of a rehabilitation pipe, when rehabilitating an existing deteriorated waterway structure constituting road side ditches by using the rehabilitation pipe.SOLUTION: An existing waterway structure 10 has a main waterway 11 and an open passage 12 continued to an upper part of the main waterway 11. A rehabilitation pipe 20 is installed in the main waterway 11 along the main waterway 11. The rehabilitation pipe 20 is formed by spirally winding a belt-like member 25 and by fitting adjacent marginal parts of winding parts with each other. A communication port 22 extended along the open passage 12 and continued to the open passage 12 is formed to the rehabilitation pipe 20. In a state of butting a pair of rehabilitation boards 40 to both side edges 22a of the communication port 22 of the rehabilitation pipe 20, a back-filling material 60 is filled into a space between an inner periphery of the main waterway 11 and the rehabilitation pipe 20. Before filling the back-filling material 60, among joint regions R0 where the marginal parts of adjacent winding parts of the rehabilitation pipe overlap, at least a part of a specific region from a boundary 110 between the adjacent winding parts appearing on the inner periphery of the rehabilitation pipe 20 to a fitting region R1 nearest to the boundary 110 is sealed.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a method and a structure for rehabilitating an old existing water channel structure such as a side ditch of a road, and a rehabilitation pipe used for rehabilitating an existing water channel structure.

  In general, a water channel structure used for a side ditch or the like of a road is made of concrete, and has a main water channel and an open channel extending along the main water channel and continuing to the upper part of the main water channel. The open channel is narrower than the main channel. Rainwater that falls on the road is led from the open channel to the main channel. See Patent Documents 1 and 2 below.

JP 2004-232260 A JP 2013-091976 A

  In recent years, aging of the waterway structure has become a problem. The applicant of the present application has developed a method described in Japanese Patent Application No. 2016-241020 in order to rehabilitate an existing water channel structure at a low cost and in a short construction period. A brief description is given below.

  Rehabilitation pipes will be installed along the main channel in the main channel of the existing channel structure. This rehabilitation pipe is configured by winding a belt-like member in a spiral shape and fitting the edges of adjacent winding portions together, like a rehabilitation pipe used for rehabilitation such as a sewer pipe.

Next, a communication port extending along the opening path is formed in the upper part of the rehabilitation pipe.
Next, a rehabilitation plate is installed facing the pair of side wall surfaces of the opening path. With these rehabilitation plates being applied to both side edges of the communication port of the rehabilitation pipe, the backfill material made of mortar or the like is placed between the rehabilitation plate and the side wall surface of the open channel and within the rehabilitation pipe and the main water channel. Fill between the laps.

  In the rehabilitation method described above, the backfill material enters the gap in the joining region where the edges of the adjacent winding portions are overlapped from both side edges of the communication port of the rehabilitation pipe, and flows in the circumferential direction through this gap. Leakage may occur in a streak form from the boundary between adjacent winding portions appearing on the inner periphery of the tube, and it remains a problem to prevent this leakage.

The present invention has been made to solve the above problems, and is a method for rehabilitating an existing water channel structure having a main water channel and an open channel extending along the main water channel and continuing to the upper part of the main water channel. There,
Installing a rehabilitation pipe formed by fitting the edges of adjacent winding portions together in the main water channel along the main water channel;
Forming a communication port extending along the opening path and connected to the opening path in the rehabilitation pipe;
A step of filling a backfilling material between the inner periphery of the main water channel and the rehabilitating pipe in a state where a pair of plate members are applied to both side edges of the communication port of the rehabilitating pipe;
With
Prior to filling of the backfill material, at least the boundary between the adjacent winding portions appearing on the inner periphery of the rehabilitating tube in the joining region where the edges of the adjacent winding portions of the rehabilitation tube overlap is closest to the boundary. Part of the specific region up to the fitting region is sealed at least at both side edges of the communication port.

  According to the above method, when the backfill material is filled, the backfill material is prevented from leaking from the both side edges of the communication port of the rehabilitation pipe to the boundary of the adjacent winding portion through the joining region of the adjacent winding portion. be able to.

Preferably, at least a part of the specific region is sealed by disposing a sealing material over the entire circumference of the winding part between the edges of the adjacent winding parts.
Thereby, the leakage of the backfilling material from the boundary between the adjacent winding portions can be more reliably prevented.

Preferably, the sealing material is provided on the belt-shaped member before the edges of adjacent winding portions of the belt-shaped member are fitted to form the rehabilitation pipe. Preferably, the sealing material is made of an elastic material or an elastic foam material.
Immediately before fitting the edges of the adjacent winding portions of the band-shaped member, a resin having fluidity may be applied to the band-shaped member, and the sealing material may be configured by curing the resin.

The sealing material may be disposed in a region near the boundary between the boundary and the fitting region as a part of the specific region, or may be disposed in the fitting region.
When the joining region includes a first fitting region as a fitting region closest to the boundary and a second fitting region adjacent to the first fitting region and separated from the boundary, the first The sealing material may be disposed in the fitting region and the second fitting region.
The sealing material may be disposed over the entire joining region.
After the rehabilitation pipe is formed, a resin having fluidity is applied along the boundary on the inner periphery of the rehabilitation pipe, and the resin is cured to form the sealing material that seals the boundary. May be.

You may seal at least one part of the said specific area | region with the said both edges by applying a sealing material to the both edges of the said communicating port of the said rehabilitation pipe | tube.
By melting both side edges of the communication port of the rehabilitation pipe, at least a part of the specific region may be sealed with the both side edges.
By crushing the side edge of the communication port of the rehabilitation pipe in the radial direction, at least a part of the specific region may be sealed with the side edges.

Preferably, the plate material comprises a rehabilitation plate, and the rehabilitation plate has a vertical wall portion that is spaced apart from the side wall surface of the opening path, and a curl portion that is continuous with a lower end of the vertical wall portion. In the state where the lower end hits the side edge of the communication port of the rehabilitation pipe and the tip edge of the curled part hits the inner periphery of the rehabilitation pipe, the backfill material is used as the inner periphery of the main water channel and the rehabilitation pipe. And between the vertical wall portion of the rehabilitation plate and the side wall surface of the opening.
According to the above method, the open channel of the existing water channel structure can be rehabilitated.

An aspect of the present invention is a structure for rehabilitating an existing water channel structure having a main water channel and an open channel extending along the main water channel and continuing to the upper part of the main water channel,
A rehabilitation pipe made of a spirally wound belt-like member and fitted with edges of adjacent winding portions is installed along the main water channel in the main water channel, and the rehabilitation pipe has the opening A communication port extending along the path and continuing to the opening path is formed,
A pair of rehabilitation plates is disposed in the opening path, and the rehabilitation plate has a vertical wall portion that is spaced apart from the side wall surface of the opening path, and a curl portion that is continuous with a lower end of the vertical wall portion. The portion hits the side edge of the communication port of the rehabilitation pipe, and the tip edge of the curled part hits the upper inner periphery of the rehabilitation pipe,
Backfill material is filled between the inner circumference of the main water channel and the rehabilitation pipe, and between the vertical wall portion of the rehabilitation plate and the side wall surface of the opening passage,
One of the specific regions from the boundary between the adjacent winding portions appearing on the inner periphery of the rehabilitation tube to the fitting region closest to the boundary among the joining regions where the edges of the adjacent winding portions of the rehabilitation tube overlap. The portion is sealed at least at both side edges of the communication port.

Still another aspect of the present invention provides a rehabilitation of an existing water channel structure having a main water channel and an open channel extending along the main water channel and continuing to the upper part of the main water channel. Rehabilitation pipe installed in the main waterway,
It consists of a band-shaped member wound spirally, the edges of adjacent winding parts are fitted together, and a communication port extending along the opening path and continuing to the opening path is formed,
Of the joint region where the edges of the adjacent winding portions overlap, at least a part of the specific region from the boundary between the adjacent winding portions appearing on the inner periphery to the fitting region closest to the boundary is at least the communication port It is characterized by being sealed at both side edges.

  According to the present invention, when the backfilling material is filled between the inner periphery of the main water channel of the aged existing waterway structure and the rehabilitation pipe, the backfilling material is prevented from leaking to the inner periphery of the rehabilitation pipe. be able to.

It is sectional drawing which shows the state which shaved the side wall surface of the opening channel of the existing water channel structure, and formed the wide opening channel in the 1st process of the rehabilitation method of the existing water channel structure which concerns on this invention. It is sectional drawing which shows the state which installed the rehabilitation pipe | tube in the main waterway of the existing waterway structure in the 2nd process of the said rehabilitation method. It is sectional drawing which shows the state which formed the communicating port in the upper part of the said rehabilitation pipe | tube in the 3rd process of the said rehabilitation method. It is sectional drawing which shows the state which installed the pair of rehabilitation board and the support jig in the said opening path in the 4th process of the said rehabilitation method. It is sectional drawing which shows the state which filled the backfill material between the said rehabilitation board and the said rehabilitation pipe | tube, and the existing waterway structure in the 5th process of the said rehabilitation method. In the sixth step of the rehabilitation method, the support jig is removed, and the rehabilitation of the existing water channel structure is completed. It is sectional drawing which shows the sealing method of the rehabilitation pipe | tube which concerns on 1st Embodiment of this invention, (A) is the state just before an adjacent winding part is fitted, (B) is the state which fitting was completed. Each is shown. (A) and (B) are the principal part expanded sectional views of FIG. 7 (A) and (B), respectively. It is sectional drawing which shows the sealing method of the rehabilitation pipe | tube which concerns on 2nd Embodiment of this invention, (A) is the state just before an adjacent winding part is fitted, (B) is the state which fitting was completed. Each is shown. It is sectional drawing which shows the sealing method of the rehabilitation pipe | tube which concerns on 3rd Embodiment of this invention, (A) is the state just before an adjacent winding part is fitted, (B) is the state which fitting was completed. Each is shown.

Embodiments of the present invention will be described below with reference to the drawings. First, an existing water channel structure 10 used as a gutter of the highway 1 (road) will be briefly described with reference to FIG. The existing water channel structure 10 is made of reinforced concrete, extends long along the highway 1, has a main water channel 11 having a circular cross section, and an open channel 12 extending along the main water channel 11 and continuing to the upper part of the main water channel 11. have. The opening channel 12 has a narrower width than the diameter of the main channel 11 and opens on the upper surface of the existing channel structure 10. The opening path 12 has a pair of vertical side wall surfaces 12a (indicated by imaginary lines in FIG. 1) facing each other in the width direction.
Rainwater that falls on the highway 1 flows into the main waterway 11 through the opening 12. In addition, the both ends of the existing waterway structure 10 are connected to the ridges arranged at intervals along the highway 1.

When the existing water channel structure 10 is aged, the following steps are executed in order and rehabilitated.
<Opening path processing ... 1st process>
First, the side wall surface 12a of the opening path 12 is cut, and the corroded portion of the side wall surface 12a is removed. Thereby, the width | variety of the opening path 12 spreads. A new side wall surface formed by cutting is denoted by reference numeral 12b in FIG.

<Installation of rehabilitation pipe 20 ... 2nd process>
Next, as shown in FIG. 2, the rehabilitation pipe 20 is provided along the main water channel 11 in the main water channel 11. As an example of the installation method of the rehabilitation pipe 20, a belt-like member (details will be described later) is fed out from the ground drum to a trough on one end side of the existing water channel structure 10. The edges of adjacent winding portions of the band-shaped member are fitted together while the band-shaped member is spirally wound by the pipe making machine in the cage. A wire is attached to the tip of the rehabilitation pipe, and as the rehabilitation pipe 20 is manufactured, the rehabilitation pipe 20 is pulled toward the other end side of the existing water channel structure 10 so that the rehabilitation pipe 20 is pulled. Install in the main channel 11. The internal space of the rehabilitation pipe 20 is provided as a rehabilitation main water channel 21.
The diameter of the rehabilitation pipe 20 is smaller than the main water channel 11 of the existing water channel structure 10.

  In addition, as a method of installing the rehabilitation pipe 20, instead of the pulling type, a main push type in which the rehabilitation pipe 20 is pushed into the main water channel 11 from the pipe making machine side may be applied (Japanese Patent Laid-Open No. 2015-105658). The rehabilitation pipe 20 may be produced by a self-propelled pipe making machine (see Japanese Patent Application Laid-Open No. 2006-043555).

<Formation of communication port 22 .. Third step>
Next, as shown in FIG. 3, an elongated communication port 22 is formed along the opening path 12 in the upper part of the rehabilitation pipe 20. As a result, the rehabilitated main water channel 21 is communicated with the open channel 12 through the communication port 22. The width of the communication port 22 is narrower than that of the opening path 12, and both side edges 22 a protrude from the side wall surface 12 b of the opening path 12.
When the communication port 22 is formed, the rehabilitation pipe 20 is deformed so as to expand in diameter due to internal residual stress, and sticks to the main water channel 11 of the existing water channel structure 10.

<Installation of rehabilitation device A ... 4th process>
Next, as shown in FIG. 4, a plurality of rehabilitation apparatuses A are arranged in the longitudinal direction of the opening path 12 in the opening path 12. The rehabilitation apparatus A includes a pair of rehabilitation plates 40 (plate materials) and a support jig 50 that supports the rehabilitation plates 40.

The rehabilitation plate 40 of the present embodiment is made of a resin such as polyvinyl chloride, polyethylene, or polypropylene, but may be a metal.
Each rehabilitation plate 40 includes a vertical wall portion 41 facing the side wall surface 12b of the opening path 12 with a space therebetween, a flange 42 protruding from the upper edge of the vertical wall portion 41 toward the side wall surface 12b, and a vertical wall. It has a curled portion 43 (receiving portion) having a U-shaped cross section that continues to the lower end of the portion 41. A seal member 44 is attached to the leading edge of the curled portion 43.
At both ends in the longitudinal direction of the vertical wall portion 41 of the rehabilitation plate 40, connection plate portions (not shown) are provided, and by connecting the connection plate portions of the adjacent rehabilitation plates 40 with bolts, a plurality of connection plate portions are provided. The rehabilitation plates 40 are connected without gaps in the longitudinal direction.

  The support jig 50 of the present embodiment is made of a resin such as polyvinyl chloride, polyethylene, or polypropylene, but may be a metal. The support jig 50 includes an insertion portion 51 having a substantially U-shaped cross section, and flange portions 52 formed on both sides of the insertion portion 51. The flange 52 is placed on the upper surface of the existing water channel structure 10.

  The support jig 50 suspends and supports the rehabilitation plate 40 via bolts 55 in a state where the vertical wall portion 41 of the rehabilitation plate 40 is passed through the communication port 22 of the rehabilitation tube 20. The bolt 55 passes through the flange portion 52 of the support jig 50 and is screwed into the flange portion 42 of the rehabilitation plate 40.

  The insertion portion 51 of the support jig 50 is inserted between the upper portions of the vertical wall portions 41 of the pair of rehabilitation plates 40, whereby the interval between the vertical wall portions 41 of the pair of rehabilitation plates 40 can be maintained at a set interval. In this state, the vertical wall portion 41 is separated from and opposed to the side wall surface 12 b of the opening passage 12, and the lower end portion of the vertical wall portion 41 is in contact with the side edge 22 a of the communication port 22 of the rehabilitation pipe 20.

  By turning the bolt 55 and pulling up the rehabilitation plate 40, the tip edge of the curled portion 43 can be pressed against the inner periphery in the vicinity of the side edge 22a of the rehabilitation tube 20, and the vicinity of the side edge 22a can be raised. The rehabilitation tube 20 can be kept circular.

<Filling of backfilling material 60. Fifth step>
Next, at both ends of the existing water channel structure 10 facing the ridge, a clearance between the rehabilitation pipe 20 and the inner periphery of the main water channel 11, and a clearance between the rehabilitation plate 40 and the side wall surface 12b of the opening channel 12, By filling an end sealant made of quick setting mortar, both ends of these gaps are sealed.

  Subsequently, as shown in FIG. 5, the gap between the rehabilitation pipe 20 and the inner periphery of the main water channel 11 and the gap between the rehabilitation plate 40 and the side wall surface 12 b of the opening 12 are made of non-shrink mortar or the like. The backfill material 60 is filled. For example, an injection port (not shown) is formed in the flange portion 52 of the support jig 50 installed on one end side in the longitudinal direction of the existing water channel structure 10, and the backfill material 60 is injected from the injection port. This filling operation is continued until the backfill material 60 overflows from the discharge port formed in the flange portion 52 of the support jig 50 on the other longitudinal end side of the existing water channel structure 10.

  When the backfill material 60 flows through the gap between the vertical wall portion 41 of the rehabilitation plate 40 and the side wall surface 12b of the opening passage 12 to the gap between the rehabilitation pipe 20 and the inner periphery of the main water channel 11, Although leakage may occur between the wall portion 41 and the side edge 22 a of the communication port 22 of the rehabilitation pipe 20, the leaked backfill material 60 is received by the curled portion 43. Since the seal member 44 at the tip edge of the curled portion 43 is in contact with the inner periphery of the rehabilitated tube 20, it is possible to prevent leakage from the curled portion 43 to the rehabilitated main water channel 21 that is the internal space of the rehabilitated tube 20.

<Removal of support jig 50, sixth step>
After filling and curing the backfill material 60, as shown in FIG. 6, the support jig 50 is removed while the rehabilitation plate 40 remains. By removing the bolt 55, the support jig 50 can be easily separated from the rehabilitation plate 40 and removed.

  As described above, the aged existing water channel structure 10 can be rehabilitated. A rehabilitated side wall surface 15a is provided by the vertical wall portion 41 of the rehabilitation plate 40 and the backfill material 60 positioned above the rehabilitation plate 40, and a new rehabilitation opening 15 is formed between the pair of rehabilitation side wall surfaces 15a. The width of the rehabilitation opening 15 can be set to be approximately the same as the width of the opening 12 before cutting the existing water channel structure 10. The rehabilitation opening 15 is connected to the upper part of the rehabilitation main water channel 21 and can play the same role as the opening 12 and the main water channel 11 of the existing water channel structure 10.

<Structure of strip member 25 of rehabilitation pipe 20>
As shown in FIG. 7 (A), the band-shaped member 25 of the rehabilitation pipe 20 includes a main band member 100 made of a resin such as polyvinyl chloride and a steel reinforcing band member 150. The main strip 100 and the reinforcing strip 150 have the same cross-sectional shape along the longitudinal direction.

  The main strip 100 has a main strip 101. One surface 101a of the main belt portion 101 (a surface that becomes an inner periphery when wound in a spiral; hereinafter referred to as an inner peripheral surface) is a smooth surface. On the other surface 101b of this main belt portion 101 (the surface that becomes the outer periphery when spirally wound; hereinafter referred to as the outer peripheral surface), there are three ridges 102, 103, 104 from the right edge to the left edge in the figure. It is formed in order.

The protrusion 102 is a first male fitting portion. A recess between the ridge 102 and the ridge 103 is a second female fitting portion 105 adjacent to the first male fitting portion 102.
The protrusion 104 has a complicated cross-sectional shape, protrudes to the left from the left edge of the main band portion 101, and retreats from the inner peripheral surface 101 a of the main band portion 101. In the ridge 104, a portion near the left edge of the main band portion 101 has a hollow portion that opens to the inner peripheral surface 101a side, and is provided as a first female fitting portion 106. A portion of the ridge 104 adjacent to the first female fitting portion 106 is provided as a second male fitting portion 107 having a U-shaped cross section.

  The reinforcing strip 150 is fitted between the ridges 103 and 104 of the main strip 100. The reinforcing strip 150 may be omitted or embedded in the main strip 100.

  As described above, while winding the belt-like member 25 in a spiral shape using a pipe making machine, as shown in FIGS. 7A and 8A, the wound portion that has already become a part of the rehabilitated pipe 20 The edge is overlapped with the edge of the newly supplied winding portion, and a force is applied in the radial direction to fit. Accordingly, as shown in FIGS. 7B and 8B, the first male fitting portion 102 at the right edge of one (left side) winding portion and the first of the other (right side) winding portion. The female fitting portion 106 is fitted, and the second female fitting portion 105 of the one winding portion and the second male fitting portion 107 of the other winding portion are fitted.

Due to the fitting between the adjacent winding portions, only the main band portion 101 of the winding portion is exposed to the internal space of the rehabilitation pipe 20, and the inner peripheral surface 101 a of the main band portion 101 is provided as the inner peripheral surface of the rehabilitation pipe 20. The The boundary of the main band part 101 of the adjacent winding part which appears in the inner periphery of the rehabilitation pipe | tube 20 is shown with the code | symbol 110 in FIG. 7 (B) and FIG. 8 (B).
FIG. 7B and FIG. 8B also show the end surface shape that appears at the side edge 22 a of the communication port 22 after the communication port 22 is formed in the rehabilitation pipe 20.

  In FIG. 8B, a joint region where the edges of adjacent winding portions overlap is indicated by a symbol R0. A first fitting region where the first male fitting portion 102 and the first female fitting portion 106 are fitted is indicated by a symbol R1, and a second female fitting portion 105 and a second male fitting portion 107 are provided. A second fitting region to be fitted is indicated by a symbol R2. The first fitting region R1 is closer to the boundary 110 than the second fitting region R2. A region (boundary vicinity region) between the boundary 110 and the first fitting region R1 is indicated by a symbol R3. The boundary vicinity region R3 and the first fitting region R1 constitute the most important specific region for sealing described later.

In the first embodiment of the present invention, the sealing materials 200 and 210 are arranged in the bonding region R0 as shown in FIGS. 7 and 8. However, the inconvenience caused when the sealing materials 200 and 210 are not provided is briefly described. Let me explain.
When filling the backfill material 60 between the rehabilitation pipe 20 and the inner periphery of the main water channel 11 of the existing water channel structure 10 in the state shown in FIG. 4, a part of the backfill material 60 is the communication port 22 of the rehabilitation pipe 20. Leaks to the curled portion 43 through the gap between the side edge of the retinal plate 40 and the vertical wall portion 41 of the rehabilitation plate 40, but also flows into the gaps formed in the first fitting region R1 and the second fitting region R2. These gaps may flow in the circumferential direction and leak out in a streak pattern from the boundary 110 between the main bands 101 of the adjacent winding portions.

<Sealing of rehabilitation pipe 20>
In order to prevent the leakage of the backing material 60 from the boundary 110 as described above, in the present embodiment, the first male fitting is performed on the outer peripheral surface 101b of the main band portion 101 of the band-shaped member 25 before the renovated pipe 20 is manufactured. Sealing made of a rubber material (elastic material) similar to that of normal packing over the entire length of the belt-like member 25 between the joint portion 102 and the side edge of the main belt portion 101 (a portion corresponding to the boundary vicinity region R3). The material 200 is pasted.
By fitting the edges of the adjacent winding portions in the pipe making process, the sealing material 200 can seal the boundary vicinity region R3 described above in a compressed state. As a result, even if the backfilling material 60 that flows into the first fitting region R1 from both side edges 22a of the communication port 22 of the rehabilitation pipe 20 flows in the circumferential direction, the backfilling material 60 is blocked by the sealing material 200 and heads toward the boundary 110. It is not possible to prevent leakage from the boundary 110.

  In the present embodiment, the sealing material 210 made of a rubber material is attached to the bottom surface of the second female fitting portion 105 on the outer peripheral surface 101 b of the main band portion 101 of the band-shaped member 25 in the same manner as the sealing material 200. Since it is attached, the second fitting region R2 is also sealed. Therefore, since the backfilling material 60 can be prevented from moving from the second fitting region R2 to the first fitting region R1, leakage of the backfilling material 60 from the boundary 110 can be more reliably prevented.

  In the present embodiment, since the boundary vicinity region R3 is sealed over the entire length of each winding portion, the backfill material 60 accumulated in the curled portion 43 enters the gap between the boundary 110 and the fitting region R1, and the circumferential direction It does not flow into. Therefore, it is possible to prevent the backfill material 60 of the curled portion 43 from leaking in a streak shape along the boundary 110.

  In the above embodiment, as shown by phantom lines in FIG. 8 (A), the left side edge of the main band portion 101 and the first female fitting are fitted on the opposite surface of the band-shaped member 25. The same effect can be obtained by pasting the portion between the joint portion 106 and the second male fitting portion 107. The sealing material 210 may be omitted.

  Various forms can be adopted for sealing the rehabilitation pipe 20. In the embodiment shown below, the same number is attached | subjected to the structure part corresponding to 1st Embodiment of FIG. 7, FIG. 8, and the detailed description is abbreviate | omitted.

  In the second embodiment shown in FIG. 9, the first male fitting is performed from the right edge of the main band portion 101 on the outer peripheral surface 101 a side of the main band portion 101 of the band-shaped member 25 before the pipe making process of the rehabilitated pipe 20. A sealing material 220 made of an elastic foam material made of a resin is pasted over the entire length of the belt-like member 25 in a region (corresponding to the entire region of the joining region R0) extending over the portion 102 and the second female fitting portion 105.

  The sealing material 220 is crushed when the edges of adjacent winding portions are fitted to each other, whereby the entire joining region R0 is sealed. Therefore, it is possible to more reliably prevent the backfill material 60 from leaking in a streak form from the boundary 110 of the main band portion 101.

  The sealing material 220 is disposed on the inner peripheral side of the belt-like member 25 in a region extending from the left edge of the main belt portion 100 to the first female fitting portion 106 and the second male fitting portion 107 (entire region of the bonding region R0). May be pasted.

In the third embodiment shown in FIG. 10, before the rehabilitation pipe 20 is formed, the first female fitting portion 106 and the second female fitting portion 105 of the band-like member 25 are made of a resin-made elastic foam material. The sealing materials 230 and 240 to be formed are accommodated over the entire length of the belt-like member 25. In this embodiment, the sealing materials 230 and 240 are protected by the female fitting portions 106 and 105 and are stably held.
The sealing materials 230 and 240 are crushed when the edges of adjacent winding portions are fitted to each other, whereby the fitting regions R1 and R2 are sealed.
The sealing material 240 may be omitted.

  Immediately before fitting the edges of adjacent winding portions of the band-shaped member 25, a resin having fluidity may be applied to the band-shaped member 25, and the sealing material may be configured by curing the resin. Since arrangement | positioning of this sealing material is the same as that of the sealing material of 1st-3rd embodiment, detailed description is abbreviate | omitted.

  After the rehabilitation pipe 20 is formed and before the backfill material 60 is filled, a resin having fluidity is applied along the boundary 110 on the inner periphery of the rehabilitation pipe 20, and the resin is cured to cause the boundary. 110 may be sealed.

  In the above-described embodiment, the entire length of the winding portion of the belt-shaped member 25 is sealed in the embodiment. However, after the communication port 22 is formed in the rehabilitation pipe 20 and before the backfill material 60 is filled, both side edges of the communication port 22 are formed. Only 22a may be sealed. In this case, the gap between the joining regions R0 may be filled with a sealing material such as mortar, the both side edges 22a may be melted to seal the joining region R0, or the joining regions R0 of the both side edges 22a may be sealed. The joining region R0 may be sealed by crushing in the radial direction. Instead of sealing the bonding region R0, a part of the specific region including the boundary vicinity region R3 and the first fitting region R1 may be sealed.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
When filling the backfill material 60, a plate material that serves as a mold may be used instead of the rehabilitation plate 40. In this case, the mold is removed after the filling of the backfill material is completed.
The construction method and structure of the present invention are not limited to the expressway 1 and can be applied to repair of side grooves of various roads such as general roads and bicycle-only roads.

  The present invention is applicable to, for example, repairing an aged existing waterway structure on a highway.

DESCRIPTION OF SYMBOLS 10 Existing water channel structure 11 Main water channel 12 Open channel 12b Side wall surface 20 Rehabilitation pipe 21 Rehabilitation main water channel 22 Communication port 22a Side edge 25 Strip member 40 Rehabilitation board (plate material)
41 Vertical wall part 43 Curled part (receiving part)
60 Backfilling material 101 Main belt part 110 Boundary 200, 210, 220, 230, 240 Sealing material R0 Joining region R1 First fitting region R2 Second fitting region R3 Near boundary region

Claims (16)

A method of rehabilitating an existing water channel structure having a main water channel and an opening channel extending along the main water channel and continuing to the upper part of the main water channel,
Installing a rehabilitation pipe formed by fitting the edges of adjacent winding portions together in the main water channel along the main water channel;
Forming a communication port extending along the opening path and connected to the opening path in the rehabilitation pipe;
A step of filling a backfilling material between the inner periphery of the main water channel and the rehabilitating pipe in a state where a pair of plate members are applied to both side edges of the communication port of the rehabilitating pipe;
With
Prior to filling of the backfill material, at least the boundary between the adjacent winding portions appearing on the inner periphery of the rehabilitating tube in the joining region where the edges of the adjacent winding portions of the rehabilitation tube overlap is closest to the boundary. A method for rehabilitating an existing water channel structure, wherein a part of a specific region up to a fitting region is sealed at least at both side edges of the communication port.   2. The existing apparatus according to claim 1, wherein at least a part of the specific region is sealed by disposing a sealing material over an entire circumference of the winding portion between edges of the adjacent winding portions. Rehabilitation method for waterway structures.   The existing water channel structure according to claim 2, wherein the sealing member is provided on the band-shaped member before fitting the edges of adjacent winding portions of the band-shaped member to form the rehabilitation pipe. Rehabilitation method.   The rehabilitation method for an existing water channel structure according to claim 3, wherein the sealing material is made of an elastic material or an elastic foam material.   A resin having fluidity is applied to the band-shaped member immediately before fitting the edges of adjacent winding portions of the band-shaped member, and the sealing material is configured by curing the resin. Item 3. A method for rehabilitating an existing waterway structure according to item 2.   The existing water channel structure according to any one of claims 2 to 5, wherein the sealing material is disposed as a part of the specific region in a region near the boundary between the boundary and the fitting region. Rehabilitation method.   The rehabilitation method for an existing water channel structure according to claim 2, wherein the sealing material is disposed in the fitting region as a part of the specific region.   The joining region includes a first fitting region as a fitting region closest to the boundary, and a second fitting region adjacent to the first fitting region and separated from the boundary, and the first fitting The method for rehabilitating an existing water channel structure according to any one of claims 2 to 5, wherein the sealing material is disposed in a joint region and the second fitting region.   The rehabilitation method for an existing waterway structure according to any one of claims 2 to 5, wherein the sealing material is disposed over the entire joining region.   After the rehabilitation pipe is formed, a resin having fluidity is applied along the boundary on the inner circumference of the rehabilitation pipe, and the sealing material that seals the boundary is configured by curing the resin. The rehabilitation method for an existing waterway structure according to claim 2.   The existing water channel structure according to claim 1, wherein at least a part of the specific region is sealed with the both side edges by applying a sealing material to both side edges of the communication port of the rehabilitation pipe. Rehabilitation method.   The method for rehabilitating an existing water channel structure according to claim 1, wherein at least a part of the specific region is sealed with both side edges by melting both side edges of the communication port of the rehabilitation pipe. .   The existing water channel structure according to claim 1, wherein at least a part of the specific region is sealed with the side edges by crushing the side edge of the communication port of the rehabilitation pipe in a radial direction. Rehabilitation method. The plate material is made of a rehabilitation plate, and the rehabilitation plate has a vertical wall portion that is spaced apart from the side wall surface of the opening path, and a curl portion that is continuous with the lower end of the vertical wall portion,
With the lower end portion of the vertical wall portion touching the side edge of the communication port of the rehabilitation pipe and the tip edge of the curl portion hitting the inner periphery of the rehabilitation pipe, the backfill material is placed on the inner periphery of the main water channel. The rehabilitation method for an existing water channel structure according to any one of claims 1 to 13, wherein the rehabilitation pipe is filled between the vertical wall portion of the rehabilitation plate and the side wall surface of the opening passage. A structure for rehabilitating an existing water channel structure having a main water channel and an open channel extending along the main water channel and continuing to the upper part of the main water channel,
A rehabilitation pipe made of a spirally wound belt-like member and fitted with edges of adjacent winding portions is installed along the main water channel in the main water channel, and the rehabilitation pipe has the opening A communication port extending along the path and continuing to the opening path is formed,
A pair of rehabilitation plates is disposed in the opening path, and the rehabilitation plate has a vertical wall portion that is spaced apart from the side wall surface of the opening path, and a curl portion that is continuous with a lower end of the vertical wall portion. The portion hits the side edge of the communication port of the rehabilitation pipe, and the tip edge of the curled part hits the upper inner periphery of the rehabilitation pipe,
Backfill material is filled between the inner circumference of the main water channel and the rehabilitation pipe, and between the vertical wall portion of the rehabilitation plate and the side wall surface of the opening passage,
One of the specific regions from the boundary between the adjacent winding portions appearing on the inner periphery of the rehabilitation tube to the fitting region closest to the boundary among the joining regions where the edges of the adjacent winding portions of the rehabilitation tube overlap. A rehabilitation structure for an existing water channel structure, wherein the portion is sealed at least at both side edges of the communication port. Rehabilitation installed in the main waterway along the main waterway in order to rehabilitate an existing waterway structure having a main waterway and an opening channel extending along the main waterway and continuing to the upper part of the main waterway A tube,
It consists of a band-shaped member wound spirally, the edges of adjacent winding parts are fitted together, and a communication port extending along the opening path and continuing to the opening path is formed,
Of the joint region where the edges of the adjacent winding portions overlap, at least a part of the specific region from the boundary between the adjacent winding portions appearing on the inner periphery to the fitting region closest to the boundary is at least the communication port A rehabilitating pipe for an existing waterway structure, characterized in that it is sealed at both side edges.

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