JP2000265787A - Covering sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a covering sheet by which a pipe line can be easily repaired. SOLUTION: Ring-shaped reinforcing frame bodies 14 are formed at every specified distance in the secondarily placed concrete layer 2 by a plurality of divided members 17. The adjacent reinforcing frame bodies 14 are mutually fastened by connection members 15a, 15b and then, a sheet 16 is stretched on the inner peripheral part of the reinforcing frame bodies 14 so as to circumferentially cover the inside face of the secondarily placed concrete layer 2 positioned between the reinforcing frame bodies 14. A backfilling space 37 in which a backfill is placed is formed by the inside face of the secondarily placed concrete layer 2, the sheet material 16, and the reinforcing frame bodies 14. The connection members 15a, 15b and the reinforcing frame bodies 14 are embedded in the backfill and the strength of the repair part of the secondarily placed concrete layer 2 is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet lining used for pipe repair work.

[0002]

2. Description of the Related Art FIG. 8 shows an example of a sewage pipeline constructed by a shield method. The sewage pipeline supports a ground load by a pipeline body 1 composed of reinforced concrete or steel segments. A secondary wound concrete layer 2 for forming a headrace channel is constructed in the pipeline body 1.

[0003] The secondary wound concrete layer 2 of such a sewer pipe is exposed to an atmosphere containing a gas such as hydrogen sulfide 4, and deterioration such as corrosion 5 occurs over time.

Therefore, in recent years, repair work has been performed on the secondary wound concrete layer 2 of the sewage pipeline.

FIGS. 9 and 10 show an example of a conventional sewage pipe repair method. In this repair method, a long strip-shaped lining material 6 made of a synthetic resin having acid resistance and base resistance is used. It is laid spirally along the inner surface of the secondary wound concrete layer 2 and from one end of the sewer pipe to the other end, and fills a gap formed between the lining material 6 and the secondary wound concrete layer 2. The backing material is cast therein to reconstruct a smooth water conduit in the existing pipeline body 1.

At one edge in the width direction of the lining material 6, a projection 7 is formed which extends in the longitudinal direction of the lining material 6 and protrudes toward the inner surface of the secondary concrete layer 2.

[0007] At the widthwise intermediate portion of the lining material 6, there are formed ribs 8, 9 which extend in the longitudinal direction of the lining material 6, protrude toward the inner surface of the secondary rolled concrete layer 2 and are embedded in the backfill material. .

At the other edge in the width direction of the lining material 6, when the lining material 6 extends in the longitudinal direction of the lining material 6 and is spirally laid along the inner surface of the secondary rolled concrete layer 2, the protrusions 7 are provided. And a rib 11 extending in the longitudinal direction of the lining material 6 and projecting from the fitting portion 10 toward the inner surface of the secondary rolled concrete layer 2 and embedded in the backfill material; A lip 12 is formed which extends in the direction and which can abut on the rib 8 adjacent to the projection 7 when the lining material 6 is spirally laid along the inner surface of the secondary wound concrete layer 2.

[0009]

However, in the case where the sewage pipe repair method shown in FIGS. 9 and 10 is applied to a large-diameter sewage pipe, deformation of the lining material 6 at the time of placing a backfill material is required. To prevent this, the steel lining member 13 extending in the longitudinal direction of the lining material 6 is fitted between the ribs 8 and 9 while the lining material 6 is
Must be laid, and the work of laying the lining material 6 becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a sheet covering body capable of easily performing a repair work on a sewer pipe.

[0011]

In order to achieve the above object, in the sheet covering body according to the first aspect of the present invention, the arc-shaped members are fastened in the circumferential direction along the inner surface of the pipe to be repaired. An annular reinforcing frame body formed by doing and arranged at a predetermined interval in the pipeline axis direction, a member for fastening the adjacent reinforcing frame bodies to each other, and a pipe inner surface at an inner edge portion of the adjacent reinforcing frame body. A sheet material that is stretched so as to cover in the circumferential direction and forms a backfill material placing space.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, in addition to the configuration of the first aspect of the present invention, a predetermined arcuate shape forming a reinforcing frame is provided. A working hole is formed in the member to penetrate in the axial direction of the pipeline.

[0013] In any one of the first and second aspects of the present invention, annular reinforcing frames are formed at predetermined intervals in a pipe layer to be repaired by a plurality of arc-shaped members. Then, after mutually adjoining reinforcing frames are fastened to each other by a member, a sheet material is stretched on inner edge portions of both reinforcing members so as to circumferentially cover an inner surface of a conduit located between the reinforcing frames, The inner surface of the next rolled concrete layer, the sheet material, and the reinforcing frame form a backfill material placing space in which the backfill material is placed.

Further, the reinforcing frame and a member for fastening the reinforcing frame to each other are embedded in the backing material, so that the strength of the repaired portion near the inner surface of the pipe formed by the backing material and the sheet material is improved. .

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 7 show an embodiment of the sheet lining according to the present invention. The sheet lining is provided in a secondary winding concrete layer 2 to be repaired in a predetermined direction in the axial direction of the sewage pipe. An annular reinforcing frame 14 arranged at intervals, a plurality of connecting members 15a and 15b extending in the axial direction of the sewer pipe and fastening the adjacent reinforcing frames 14 to each other; And a sheet material 16 stretched so as to cover the inner surface of the wound concrete layer 2.

The reinforcing frame 14 is formed of an arcuate divided member 17.
Are sequentially tightened in a direction along the inner surface of the secondary wound concrete layer 2.

The split member 17 has a strip-shaped outer face 18 in contact with the inner surface of the secondary rolled concrete layer 2 after removing a deteriorated portion due to corrosion or the like, and a circle welded and fixed to the concave curved surface of the outer face 18. An arc-shaped web 19;
The web 19 is formed to have an H-shaped cross section by a band-shaped inner face 20 which is welded and fixed to the concave curved edge of the web 19, and when the reinforcing frame 14 is formed, the split member 17 located on the lower side is formed. The rails 32 laid in the direction of the sewage pipeline axis are attached.

At both ends in the longitudinal direction of the web 19, bolt holes 22 which penetrate in the axial direction of the sewer pipe and through which bolts 21 can be inserted are formed.

At an intermediate portion of the web 19, a bolt hole 23a penetrating in the axial direction of the sewer pipe and through which an end of the connecting member 15a can be inserted, and penetrating in the axial direction of the sewer pipe adjacent to the bolt hole 23a. And a bolt hole 23b through which an end of the connecting member 15b can be inserted.

The ends of the divided members 17 adjacent in the circumferential direction of the sewer pipe are in contact with both surfaces of the web 19 in the axial direction of the sewer pipe, and the bolt holes 24 corresponding to the bolt holes 22 respectively.
Are connected to each other by a pair of seam plates 25 formed with holes, a bolt 21 inserted into a bolt hole 24 of the seam plate 25 and a bolt hole 22 of the web 19, and a nut 26 screwed to the bolt 21. Will be concluded.

Further, the web 19 of the predetermined dividing member 17 is inserted in the axial direction of the
A working hole 28 through which a hole can be inserted is formed.

The connecting members 15a and 15b are connected to connecting rods 29 each having a male threaded portion which can be inserted into the bolt holes 23a and 23b of the web 19 at both ends, and screwed to each male threaded portion and welded to the connecting rod 29. A fixed interval setting nut 30;
A fastening nut 31 is screwed into the male screw portion so as to be located closer to the end of the connecting rod 29 than the gap setting nut 30.

The intermediate portion of the connecting rod 29 may have a round cross section, a square cross section, or an irregular cross section.

The connecting members 15a and 15b are connected to the web 1
The fastening nut 31 is screwed into the male thread portion of the connecting rod 29 inserted through the bolt holes 23a and 23b of the ninth 9, and the web 19 is sandwiched between the spacing setting nut 30 and the fastening nut 31 to thereby form the reinforcing frame 14. Divided member 1 forming
7 is concluded.

The fixing position of the gap setting nut 30 with respect to the male screw portion of the connecting rod 29 is set such that the reinforcing frames 14 adjacent to each other in the axial direction of the sewer pipe are at a predetermined gap.

The material of the sheet material 16 is a synthetic resin such as polypropylene having acid resistance and base resistance. The sheet material 16 projects toward the inner surface of the secondary wound concrete layer 2. A large number of projections 34 embedded in the backfill material are formed.

The dimensions of the sheet material 16 are set based on the distance between adjacent reinforcing frames 14 and the peripheral length of the inner edge of the reinforcing frames 14.

One edge of the sheet material 16 is located at the
It is attached to the inner face 20 by tapping screws 35 so as to cover the entire surface of each inner face 20 of the reinforcing frame body 14 located on the side.

The other edge of the sheet material 16 is located at
So as to overlap one edge of another sheet material 16 already attached to each inner face 20 of the reinforcing frame body 14 located on the side.
It is attached to the inner face 20 by a tapping screw 36.

As a result, a backfill material placing space 37 is formed by the inner surface of the secondary wound concrete layer 2, the sheet material 16, and the reinforcing frame 14 to which the sheet material 16 is attached. Become.

One edge of sheet material 16 and inner face 20
And one edge of the sheet material 16 and another sheet material 1
6 is filled with a sealant to maintain watertightness, and the winding start end and the winding end of the sheet material 16 with respect to the secondary rolled concrete layer 2 are mutually heated. It is welded and watertightness is maintained.

When the sewage pipe repair work is performed using the sheet lining body shown in FIGS. 1 to 7, when the secondary rolled concrete layer 2 from which the deteriorated portion due to corrosion or the like has been removed, a sleeper ( (Not shown) are temporarily provided at predetermined intervals in the axial direction of the sewer pipeline, and rails 32 extending in the axial direction of the sewer pipeline are provided on the crossties.
To support.

Further, materials such as the dividing member 17 for forming the reinforcing frame 14 and the connecting members 15a and 15b are carried into the sewage pipe from an existing shaft extending from the ground surface, and these materials are transferred to the rail. 32 is delivered to a predetermined position by a transportable carriage movable on the carriage 32.

Next, the divided member 17 is circumferentially fastened along the inner surface of the secondary wound concrete layer 2 by a seam plate 25, bolts 21 and nuts 26 in order, and is inscribed in the secondary wound concrete layer 2 and the rails 32. Is formed in the circumferential direction, and the reinforcing frame 14 adjacent in the axial direction of the sewer pipe is connected to the connecting members 15a, 15a.
b.

The adjacent reinforcing frames 14 are fastened by connecting the first reinforcing frame 14 and the second reinforcing frame 14 counting from the downstream side of the sewer pipe to the bolt holes 23 a of the web 19 with the connecting rods 29. Is fastened by the connecting member 15a into which the end of the connecting rod 29 is inserted, the end of the connecting rod 29 is inserted between the second reinforcing frame 14 and the third reinforcing frame 14 through the bolt hole 23b of the web 19. It is fastened by the connecting member 15b.

When the reinforcing frames 14 are completely fastened to each other, the rail 32 is connected to the lower split member 17 of each reinforcing frame 14.
, And the sleepers are removed, and one edge and the other edge of the sheet material 16 for each adjacent reinforcing frame 14 are fixed to each inner face 20 of the reinforcing frame 14 by tapping screws 35 and 36.
And the sheet material 16 is stretched between the reinforcing frames 14 so as to cover the entire inner surface of the secondary rolled concrete layer 2 located between the reinforcing frames 14, thereby forming a backfill material placing space 37. I do.

At this time, after the sheet material 16 to be positioned on the downstream B side of the sewer pipe is first attached to the inner face 20, the sheet material 16 to be positioned on the upstream A side of the sewer pipe is attached to the sheet material 16. Are attached so as to overlap each other, thereby suppressing the generation of deposits in the headrace channel due to the stepped portion due to the overlapping of the sheet materials 16, 16.

The sheet material 16 with respect to the reinforcing frame 14
Is not limited to the tapping screws 35 and 36, but other fastening members such as press-fitting rivets can be applied. Alternatively, the sheet member 16 is attached to the reinforcing frame with an adhesive. No problem.

Further, a backing material casting tube 27 is inserted into a working hole 28 formed in the web 19 of the predetermined dividing member 17, and then the backing material casting tube 27 is cast from the backing material casting tube 27. After the backfilling material is poured into the space 37 and the backfilling material solidifies, after a predetermined curing period, the work of repairing the sewage pipe is completed.

As described above, in the sheet lining body shown in FIGS. 1 to 7, the annular reinforcing frame 14 arranged in the secondary rolled concrete layer 2 is formed by the plurality of divided members 17, and the connecting member is formed. Since the adjacent reinforcing frames 14 are fastened to each other by 15a and 15b, the constituent materials of the sheet lining body can be easily carried into the sewage pipe to be repaired from the existing shaft, and the reinforcing frame 14 And connecting members 15a, 1
Since the rail 5b and the rail 32 do not interfere with each other, the material can be transported by the transport trolley before the sheet material 16 is stretched.

Further, the inner surface of the secondary rolled concrete layer 2 located between the adjacent reinforcing frames 14 is covered so as to cover the entire circumference.
Since the sheet material 16 extending in the circumferential direction of the secondary rolled concrete layer 2 is stretched on each inner face 20 of each of the reinforcing frames 14, the sheet material 16 can be easily applied to the reinforcing frames 14 and the finished state is disturbed. It can be mounted so that it does not.

Further, since the inner surface of the secondary rolled concrete layer 2, the sheet material 16, and the reinforcing frame 14 form the backing material placing space 37, the backing material can be provided without a separate dam plate or the like. The backfill material can be placed in the filling material placing space 37, and the repair work of the sewer pipe can be easily performed.

In addition, the reinforcing frame 14 embedded in the backfill material and the connecting members 15a and 15b form a reinforcing structure, and repair the secondary wound concrete layer 2 formed by the backfill material and the sheet material 16. It is possible to improve the strength of the portion.

The sheet lining of the present invention is not limited to the above-described embodiment, but may be modified without departing from the scope of the present invention.

[0046]

As described above, according to the sheet covering body of the present invention, the following various excellent effects can be obtained.

(1) A plurality of arc-shaped members form an annular reinforcing frame disposed in a pipe, and adjacent reinforcing frames are fastened to each other by another member. The constituent materials can be easily carried into the sewage pipeline to be repaired from the existing shaft.

(2) Since the sheet material is stretched on the inner edges of the two reinforcing members so as to cover the inner surface of the pipe located between the adjacent reinforcing frames in the circumferential direction, the sheet material is applied to the reinforcing members. It can be mounted easily and without disturbing the finished state.

(3) Since the backing material placing space is formed by the inner surface of the pipe, the sheet material, and the reinforcing frame, the backing material placing space is formed without providing a separate weir plate or the like. Filling material can be installed, and sewer pipe repair work can be easily performed.

(4) Since the reinforcing frame and the member for fastening the reinforcing frame to each other are embedded in the backing material, the strength of the pipeline repair portion formed by the backing material and the sheet material is improved. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an example of an embodiment of a sheet lining body of the present invention.

FIG. 2 is a front view showing a reinforcing frame body in FIG. 1;

FIG. 3 is a side view showing a state where the reinforcing frame body in FIG. 1 is fastened by a connecting member.

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 2;

FIG. 5 is a view taken in the direction of arrows VV in FIG. 2;

FIG. 6 is a view taken in the direction of arrows VI-VI in FIG. 5;

FIG. 7 is a view taken in the direction of arrows VII-VII in FIG. 2;

FIG. 8 is a cross-sectional view showing an example of a sewage pipe constructed by a shield method.

FIG. 9 is a conceptual diagram showing an example of a conventional sewage pipe repair method.

FIG. 10 is a sectional view showing a fitted state of the lining material in FIG. 9;

[Explanation of symbols]

2 Secondary rolled concrete layer (pipe) 14 Reinforcement frame 15a Connection member (member for mutually fastening reinforcement frame) 15b Connection member (member for mutually fastening reinforcement frame) 16 Sheet material 17 Dividing member (circle) (Arc-shaped member) 28 Work hole 37 Backing material placement space

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takayuki Iwai 2-1, Tsukudocho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo Head Office (72) Inventor Sadao Uno 2-1 Tsukudocho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo head office (72) Inventor Kenji Kawaguchi 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo head office (72) Inventor Satoshi Matsuda 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Kumagaya gumi Tokyo headquarters (72) Inventor Shigeo Kitahara 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Tokyo headquarters, Kumagaya Gumi Co., Ltd. (72) Inventor Shigeo Fujii 11-1 Kitahama-cho, Chita-shi, Aichi Pref. Inside the plant (72) Inventor Koichiro Kuwahara 11-1 Kitahama-cho, Chita-shi, Aichi Pref. Shingo Aichi Prefecture Chita City Kitahama-cho, No. 11 No. 1 Ishikawajima-Harima Heavy Industries Co., Ltd. Aichi factory in the F-term (reference) 2D055 BB01 KB11 LA16

Claims (2)

[Claims] 1. An annular reinforcing frame formed by sequentially fastening circular members in the circumferential direction along the inner surface of a pipeline to be repaired and arranged at predetermined intervals in the pipeline axis direction, A member for fastening the reinforcing frames to each other, and a sheet member stretched over the inner edge portion of the adjacent reinforcing frame so as to circumferentially cover the inner surface of the pipeline and forming a backfill material placing space. A sheet lining body characterized in that: 2. The sheet covering body according to claim 1, wherein a working hole penetrating in a pipe axis direction is formed in a predetermined arc-shaped member forming the reinforcing frame.