JP2015031096A - Repair structure and repair method of water way - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable water leakage to be securely prevented without using a fusion or deposition method for connecting waterproof sheets with each other, when repairing a water way by covering a wall surface of the water way with the waterproof sheets.SOLUTION: In a repair structure of a water way, a plurality of long thermoplastic elastomer-based waterproof sheets 11-15, rigid plate-like bodies 21-26, indeterminate form sealing materials 31-36, and fixing members 40 are used. The rigid plate-like body 21 is joined to the uppermost stream waterproof sheet 11, and the indeterminate form sealing material 31 is interposed between the rigid plate-like body 21 and a water way wall surface. The rigid plate-like body 26 is joined to the lowermost stream waterproof sheet 15, and the indeterminate form sealing material 36 is interposed between the rigid plate-like body 26 and a water way wall surface.

Description

  The present invention relates to a repair structure and a repair method for a concrete water channel, for example.

  Conventionally, concrete water channels may leak due to, for example, aging of joints or the like due to long-term use, or due to cracks in the channel body. As such aging countermeasures, for example, techniques disclosed in Patent Documents 1 to 3 are known.

  In Patent Document 1, the water channel is repaired by covering the wall surface of the water channel with a resin sheet. That is, as a procedure, first, an edge fixing plate made of a steel plate with a coating resin layer is mechanically fixed to a concrete substrate with a nail using a nailing high pressure gun, an embedded anchor or the like. Thereafter, both edges of the resin sheet are welded to the edge fixing plate. The end portion of the upstream resin sheet is overlapped on the upper surface of the resin sheet on the downstream side in the water flow direction, and the joint portion between these resin sheets is intermittently welded.

  In this patent document 1, there is an advantage that the construction work is easy and the cost is low as compared with the entire sheet bonding method using an adhesive agent and the method of forming a coating film such as FRP or photo-curing resin. In addition, since the joint part of the resin sheet is intermittently welded, a non-weld part can be formed, and water or air that has entered between the wall surface of the water channel and the resin sheet can be introduced from the non-welded part into the water channel. There is also an advantage that can be.

  Patent Document 2 discloses a water channel repair material made of a fiber-reinforced synthetic resin panel, a buffer material pasted to leave the periphery of the panel, and a water-expandable rubber pasted to surround the buffer material. It is disclosed. A plurality of water channel repair materials are arranged in the water flow direction in the water channel, and the buffer material and the water-expandable rubber of each water channel repair material are brought into close contact with the wall surface of the water channel. The water channel repair material is arranged with an interval of about 1 mm to 2 mm, and is fixed to the water channel with an anchor bolt. The water flowing in between the water channel repair materials is absorbed by the water-swellable rubber, so that water leakage is prevented. With this, there is no need to dry the wall surface of the water channel, and there is an advantage that the construction period can be shortened and the work can be simplified.

  Patent Document 3 discloses a flexible joint for joint water stoppage in a water channel. This flexible joint includes an elongated thermoplastic elastomer-based waterproof sheet, a pair of elongated plate-like bodies, an indeterminate sealing material, and a fastening member. The pair of plate-like bodies are fixed to both edge portions of the waterproof sheet, and a flexible portion is formed by the waterproof sheet between the plate-like bodies. The amorphous sealing material is provided on the water channel wall surface side of each plate-like body. The fastening member passes through the waterproof sheet, the plate-like body, and the amorphous sealing material and is fixed to the water channel.

JP 2011-99240 A JP 2009-249967 A JP 2009-7899 A

  However, in Patent Document 1, when a resin sheet is welded to the edge fixing plate with a hot air welding machine, hot air is fed between the resin sheet and the edge fixing plate while rolling the resin sheet. Since the resin sheet and the surface of the covering resin layer of the edge fixing plate have to be melted by heating to a predetermined temperature or higher and holding the heating state for a predetermined time, it is technically highly skilled. Cost. In addition, in the case of electromagnetic induction heating, only the portion where the heating coil is pressed against the edge fixing plate can be melted, but since the metal plate of the base material of the edge fixing plate becomes high temperature due to eddy current, the molten resin It is necessary to prevent misalignment of the bonded portion until the resin of the sheet and the coating resin layer is cooled and solidified to obtain adhesive strength. The same applies to hot melt adhesive resins. Moreover, the connection part of resin-made sheets generate | occur | produces the process of a 2 sheet | seat overlapped part or a 3 sheet | seat overlap part, and a high technique and skill are required for waterproof construction.

  In addition, by intermittently welding the joint portion of the resin sheet, water or air that has entered between the wall surface of the water channel and the resin sheet can be introduced into the water channel. When the water pressure is higher than the water pressure outside the water channel, the water inside the water channel leaks outside the water channel, and the purpose of repairing the water channel may not be achieved.

  Moreover, although there exists a technique which does not weld a resin-made sheet | seat like patent document 2, 3, in the case of an existing water channel, it is curving or the level | step difference has generate | occur | produced in the joint part. In such a case, it becomes difficult to arrange the water channel repairing material of Patent Document 2 side by side in the water flow direction. Moreover, the water expansion rubber | gum of patent document 2 exists in a contracted state at the time of drying, and it takes time to absorb the inflowing water, and there exists a possibility that it may leak during this time. Moreover, when the joint part of a water channel is displaced by ground subsidence, an earthquake, etc., a water channel repair board cannot follow such a displacement and there exists a possibility that water may leak from between water channel repair boards.

  Moreover, patent document 3 is a flexible joint of a joint part, and it cannot be set as the waterproof structure continued long in the water flow direction, connecting a some sheet | seat along the wall surface of a water channel.

  The present invention has been made in view of such points, and the object of the present invention is to fuse or bond the waterproof sheets to each other when repairing the water channels by covering the wall surfaces of the water channels with the waterproof sheets. An object is to reliably prevent water leakage without using a welding method.

  In order to achieve the above object, in the present invention, the waterproof sheet is fixed to the water channel using a rigid plate-like body, an irregular sealing material, and a fixing member.

The first invention is
In the repair structure of a waterway that repairs the waterway by covering the wall of the existing waterway with a waterproof sheet,
A plurality of elongated thermoplastic elastomeric waterproof sheets,
A rigid plate,
An irregular sealing material,
A fixing member,
Each waterproof sheet is formed so as to extend from the upper side of one side wall of the water channel to the bottom wall and the upper side of the other side wall, and has a shape having a predetermined length in the water flow direction,
The above waterproof sheets are installed side by side in the water flow direction,
The rigid plate-like body is joined to the water channel wall surface side of the upstream edge of the upstreammost waterproof sheet located in the most upstream in the water flow direction, and the irregular sealing is provided between the rigid plate body and the water channel wall surface. Material is interposed, the upstream edge of the most upstream waterproof sheet is fixed to the water channel with the rigid plate and the irregular sealing material by the fixing member,
The rigid plate-like body is joined to the downstream wall of the downstreammost waterproof sheet positioned downstream in the water flow direction, and the irregular sealing is provided between the rigid plate-like body and the channel wall. The material is interposed, and the downstream edge of the most downstream waterproof sheet is fixed to the water channel together with the rigid plate-like body and the irregular sealing material by the fixing member,
The ends of the waterproof sheets that are positioned so as to face the water channel among the waterproof sheets that are arranged so that the ends of the waterproof sheets adjacent in the water flow direction overlap each other in the thickness direction. The rigid plate-like body is joined to the water channel wall surface side of the section, and the end of the waterproof sheet located on the water channel wall surface side is provided with the irregular sealing material so as to contact the rigid plate-like body, The fixing member is an end portion of the waterproof sheet positioned so as to face the water channel arranged so as to overlap in the thickness direction, the rigid plate-like body, the irregular sealing material, and an end of the waterproof sheet positioned on the water channel wall surface side. It is characterized by being fixed to the water channel through the part.

  According to this configuration, the amorphous sealing material is interposed between the rigid plate-like body joined to the upstream edge of the most upstream waterproof sheet and the water channel wall surface, and this amorphous sealing material is interposed Since the most upstream waterproof sheet is fixed together with the rigid plate-like body by the fixing member, the water stoppage between the most upstream waterproof sheet and the water channel wall surface is ensured. Similarly, since an amorphous sealing material is interposed between the rigid plate-like body joined to the downstream edge portion of the most downstream waterproof sheet and the water channel wall surface, water stoppage is ensured. Further, since the rigid plate-like body and the indeterminate sealing material are also interposed between the end portions of the waterproof sheets adjacent to each other in the water flow direction, water stoppage is ensured.

  For example, when a displacement due to an earthquake or the like occurs, the waterproof sheet is made of an elastomeric material, so that it is deformed to follow the displacement and absorbs the displacement.

  Therefore, since the water-stopping property is ensured in the entire area renovated by the present renovation structure, water leakage is surely prevented.

  In addition, each waterproof sheet is fixed to a water channel by a fixing member that penetrates a rigid plate-like body or an indeterminate sealing material, so the conventional fusion or welding method is not required for connecting the waterproof sheets to each other. Good. Moreover, by adjusting the connection position of each waterproof sheet, it is possible to attach it to a curve of a water channel or a step of a joint.

According to a second invention, in the first invention,
A through hole is formed in the waterproof sheet, and a drainage device for draining water that has entered between the waterproof sheet and the wall surface of the water channel to the water channel is connected to the through hole,
The drainage device includes a first sheet material and a second sheet material,
The first sheet material and the second sheet material are provided so as to overlap in this order on a surface facing the water channel of the waterproof sheet,
In the first sheet material, a communication hole communicating with the through hole is formed, and the communication hole peripheral portion of the first sheet material and the through hole peripheral portion of the waterproof sheet are bonded over the entire periphery,
The first sheet material and the second sheet material are bonded to each other around the communication hole, and a part of the periphery of the first sheet material and the second sheet material is formed from a non-bonded portion. A drain outlet is formed.

  According to this structure, when water infiltrates between the waterproof sheet and the water channel wall surface, the water passes between the through hole of the waterproof sheet and the first sheet of the drainage device and the first sheet and the second sheet. The first sheet and the second sheet are opened by water pressure and drained from the drain into the water channel. Thereby, the water pressure on the back side of the waterproof sheet is reduced to prevent the waterproof sheet from being damaged, and it is also possible to prevent the flow down performance from being hindered due to the sheet bulging due to the water pressure of the back surface water.

  On the other hand, when the water pressure in the water channel is higher, the second sheet is pressed against the first sheet by the water pressure to be closed, so that the water in the water channel does not leak to the outside.

According to a third invention, in the first or second invention,
The rigid plate-like body is disposed at a portion corresponding to the corner of the water channel in the waterproof sheet, and the rigid plate-like body is fixed to the water channel by the fixing member via the amorphous sealing material. It is characterized by that.

  According to this configuration, the vicinity of the corner of the water channel in the waterproof sheet can be reliably fixed to the water channel.

According to a fourth invention, in any one of the first to third inventions,
The rigid plate-like body is disposed in a portion of the waterproof sheet corresponding to the upper side of the side wall of the water channel, and the rigid plate-like body is fixed to the water channel by the fixing member via the amorphous sealing material. It is characterized by that.

  According to this configuration, the vicinity of the upper side wall of the water channel in the waterproof sheet can be reliably fixed to the water channel.

According to a fifth invention, in any one of the first to fourth inventions,
The waterproof sheet is made of soft vinyl chloride resin,
The rigid plate has a steel plate and a soft vinyl chloride resin laminated on the steel plate,
The rigid plate is bonded to the waterproof sheet by adhering a laminated vinyl chloride resin to the waterproof sheet.

  According to this configuration, the rigid sheet can be easily and firmly bonded to the waterproof sheet by bonding the waterproof sheet made of vinyl chloride resin to the vinyl chloride resin layer of the rigid sheet. It becomes possible. The rigid plate-like body at the end of the waterproof sheet is bonded to the waterproof sheet in advance by welding with a solvent, fusion with hot air or the like at a factory or the like.

A sixth invention is the invention according to any one of the first to fifth aspects,
A rigid plate-like body is joined to the water channel wall surface side at the end of the waterproof sheet in the water flow direction, and the rigid plate-like body on the water channel wall surface side is fixed to the water channel together with the end of the waterproof sheet by the fixing member. It is characterized by that.

  According to this configuration, the end of the waterproof sheet can be securely fixed according to the shape of the water channel, and the stress applied to the waterproof sheet connecting portion at the joint between the waterproof sheet and the rigid plate is distributed by the rigid plate. can do.

The seventh invention
In the repair method of a waterway that repairs the waterway by covering the wall surface of the existing waterway with a waterproof sheet,
A plurality of elongated thermoplastic elastomeric waterproof sheets,
A rigid plate,
An irregular sealing material,
Prepare a fixing member,
Each of the waterproof sheets is formed to extend from the upper side of one side wall of the water channel to the bottom wall and the upper side of the other side wall, and has a shape having a predetermined length in the water flow direction.
After that, install a plurality of the above waterproof sheets side by side in the water flow direction,
The rigid plate-like body is joined to the water channel wall surface side of the upstream edge of the uppermost upstream waterproof sheet located in the uppermost stream in the water flow direction, and the irregular sealing is provided between the rigid plate body and the water channel wall surface. The material is interposed, the upstream edge of the most upstream waterproof sheet is fixed to the water channel together with the rigid plate and the irregular sealing material by the fixing member,
The rigid plate-like body is joined to the water channel wall surface side at the downstream edge of the most downstream waterproof sheet located at the most downstream in the water flow direction, and the irregular sealing is provided between the rigid plate body and the water channel wall surface. The material is interposed, and the downstream edge of the most downstream waterproof sheet is fixed to the water channel together with the rigid plate and the irregular sealing material by the fixing member,
In the end portion of the waterproof sheet positioned so as to face the water channel among the waterproof sheets arranged to overlap each other in the thickness direction, the end portions of the waterproof sheet adjacent to each other in the water flow direction are arranged. The rigid plate-like body is joined to the waterway wall surface side, the endless sealing sheet positioned on the waterway wall surface side is provided with the irregular sealing material so as to contact the rigid plate-like body, and the fixing member is , Penetrating through the end of the waterproof sheet positioned so as to face the water channel arranged so as to overlap the thickness direction, the rigid plate-like body and the amorphous sealing material, and the end of the waterproof sheet positioned on the water channel wall surface side And is fixed to a water channel.

  According to the first and seventh inventions, the plurality of long thermoplastic elastomeric waterproof sheets, the rigid plate-like body, and the irregular sealing material are fixed to the water channel by the fixing member. The construction workability is facilitated and water leakage can be reliably prevented without using a fusion or welding method for the connection. Moreover, for example, when a displacement due to an earthquake or the like occurs, the waterproof sheet is deformed so as to follow the displacement and absorb the displacement, so that water leakage can be prevented.

  According to the second invention, the drainage device is provided on the waterproof sheet so that the water that has entered between the waterproof sheet and the wall surface of the water channel is drained into the water channel, so that the waterproof sheet can be prevented from being damaged by water pressure on the back side. Moreover, it is possible to prevent the flow-down performance from being hindered by the sheet bulging due to water pressure.

  According to the third invention, since the rigid plate-like body is disposed at the portion corresponding to the corner of the water channel in the waterproof sheet and the rigid plate-like body is fixed to the water channel, the waterproof sheet is securely fixed to the water channel. Even if the thermoplastic elastomer-based waterproof sheet is about to shrink over time, the sheet at the corner can be prevented from floating because the fixing member fixes the water channel with the rigid plate-like body and the irregular sealing material.

  According to the fourth aspect of the invention, the rigid plate-like body is disposed at the portion corresponding to the upper side wall of the water channel in the waterproof sheet, and the rigid plate-like body is fixed to the water channel, so that the waterproof sheet is securely fixed to the water channel. It is possible to prevent the edge of the sheet from being displaced due to the intrusion of water or foreign matter from the upper side of the side wall or the shrinkage of the waterproof sheet.

  According to the fifth invention, the rigid sheet is bonded to the waterproof sheet by adhering the waterproof sheet made of vinyl chloride resin to the vinyl chloride resin layer of the rigid sheet by welding with a solvent or fusion with hot air or the like. Can be easily and firmly joined.

  According to the sixth invention, the rigid plate-like body is joined to the water channel wall surface side at the end of the waterproof sheet in the water flow direction, and the rigid plate-like body and the end of the waterproof sheet are fixed to the water channel by the fixing member. Therefore, the end of the waterproof sheet can be prevented from floating.

It is a perspective view which shows the repair structure of the waterway which concerns on embodiment. It is a perspective view explaining the point which attaches a 5th waterproof sheet. It is a perspective view explaining the point which attaches a 4th waterproof sheet. FIG. 4 is a cross-sectional view corresponding to line IV-IV in FIG. 1. It is a perspective view which expands and shows the drainage device vicinity. FIG. 6 is a view corresponding to FIG. 1 according to a first modification of the embodiment. It is sectional drawing equivalent to the VII-VII line in FIG. FIG. 6 is a view corresponding to FIG. 3 according to a second modification of the embodiment. FIG. 6 is a view corresponding to FIG. 1 according to a second modification of the embodiment. FIG. 10 is a cross-sectional view corresponding to line XX in FIG. 9. It is sectional drawing equivalent to the XI-XI line in FIG. It is FIG. 1 equivalent view which concerns on the modification 3 of embodiment. It is sectional drawing equivalent to the XIII-XIII line | wire in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 is a perspective view of a water channel 100 renovated by a water channel renovation structure 1 according to an embodiment of the present invention. The water channel 100 is configured by arranging a plurality of concrete water channel components 101, 101,... In a predetermined direction, and can flow, for example, agricultural water or industrial water.

  The water channel 100 has one side wall 100a, the other side wall 100b, and a bottom wall 100c. Further, there is a joint portion 102 between the water channel constituent members 101 and 101 adjacent to each other in the water flow direction (longitudinal direction) of the water channel 100. 1 to 3, the upper side is the upstream side in the water flow direction.

  The water channel repair structure 1 includes a plurality of long thermoplastic elastomeric waterproof sheets 11 to 15, rigid plate bodies 21 to 26, amorphous sealing materials 31 to 36, a fixing member 40, and back water And a drainage device 50. In this embodiment, a case where five waterproof sheets are used will be described. However, the number of waterproof sheets is not limited to five, and may be less than five according to the scale of repair, etc. Any number can be used. Moreover, since the number of rigid plate-like bodies and the irregular sealing material depends on the number of waterproof sheets, it may be adjusted to the number of waterproof sheets.

  The waterproof sheets 11 to 15 include a first waterproof sheet 11 as a most upstream waterproof sheet located at the most upstream in the water flow direction, a second waterproof sheet 12 adjacent to the downstream side of the first waterproof sheet 11 in the water flow direction, and a second waterproof sheet. A third waterproof sheet 13 adjacent to the downstream side of the sheet 12 in the water flow direction, a fourth waterproof sheet 14 adjacent to the downstream side of the third waterproof sheet 13 in the water flow direction, and an adjacent downstream side of the fourth waterproof sheet 14 in the water flow direction. The fifth waterproof sheet 15. The fifth waterproof sheet 15 is the most downstream waterproof sheet.

  The downstream end of the first waterproof sheet 11 adjacent to the water flow direction and the upstream end of the second waterproof sheet 12 are arranged so as to overlap each other in the thickness direction. Further, the downstream end of the second waterproof sheet 12 and the upstream end of the third waterproof sheet 13 are arranged so as to overlap each other in the thickness direction. Further, the downstream end of the third waterproof sheet 13 and the upstream end of the fourth waterproof sheet 14 are arranged so as to overlap each other in the thickness direction. Furthermore, the downstream end portion of the fourth waterproof sheet 14 and the upstream end portion of the fifth waterproof sheet 15 are arranged so as to overlap each other in the thickness direction.

  Since the first to fifth waterproof sheets 11 to 15 are the same, the fifth waterproof sheet 15 will be described in detail. 3, the fifth waterproof sheet 15 is formed so as to extend from the upper side of one side wall 100a of the water channel 100 to the upper side of the bottom wall 100c and the other side wall 100b, and has a predetermined length in the water flow direction. The shape has a thickness. The fifth waterproof sheet 15 can be made of, for example, a soft vinyl chloride resin, but the material is not limited to this, and can be made of various thermoplastic elastomers. For example, it can be selected from the group consisting of vinyl chloride resin elastomers, olefin elastomers, styrene elastomers, urethane elastomers, EVA elastomers and the like.

  As shown in FIG. 1, the rigid plate-like bodies 21 to 26 include a first rigid plate-like body 21 joined to an upstream edge portion of the first waterproof sheet 11 and a downstream edge portion of the first waterproof sheet 11. A second rigid plate 22 joined to the second waterproof sheet 12, a third rigid plate 23 joined to the downstream edge of the second waterproof sheet 12, and a second joint joined to the downstream edge of the third waterproof sheet 13. A fourth rigid plate-like body 24, a fifth rigid plate-like body 25 joined to the downstream edge portion of the fourth waterproof sheet 14, and a sixth rigid plate shape joined to the downstream edge portion of the fifth waterproof sheet 15. It is the body 26.

  The first rigid plate-like body 21 is joined to the water channel wall surface side at the upstream edge of the first waterproof sheet 11, and along the edge, one side wall 100a, the bottom wall 100c of the water channel 100, and The other side wall 100b is formed into a U-shape that opens upward.

  The second rigid plate-like body 22 is joined to the water channel wall surface side at the downstream edge of the first waterproof sheet 11 and is formed in the same shape as the first rigid plate-like body 21. The third rigid plate-like body 23 is joined to the water channel wall surface at the downstream edge of the second waterproof sheet 12 and is formed in the same shape as the first rigid plate-like body 21. The fourth rigid plate-like body 24 is joined to the channel wall surface side at the downstream edge of the third waterproof sheet 13 and is formed in the same shape as the first rigid plate-like body 21. The fifth rigid plate-like body 25 is joined to the channel wall surface side at the downstream edge of the fourth waterproof sheet 14 and is formed in the same shape as the first rigid plate-like body 21. The sixth rigid plate-like body 26 is joined to the channel wall surface side at the downstream edge of the fifth waterproof sheet 15 and is formed in the same shape as the first rigid plate-like body 21.

  Since the 1st-6th rigid plate-shaped bodies 21-26 are the same, hereafter, the 4th rigid plate-shaped body 24 is demonstrated in detail based on FIG. The fourth rigid plate-like body 24 includes, for example, a base material 24a made of a plate material such as stainless steel, aluminum, rust-proof plated steel, and rust-proof coated steel material, and a resin material layer 24b provided in layers on the base material 24a. ing. The resin material layer 24b only needs to be provided on the adhesive surface with the third waterproof sheet 13, but if it is provided so as to cover the entire surface of the base material 24a, rust prevention or the like is improved. The resin material layer 24b may be omitted. Further, as the base material 24a, at least one selected from the group consisting of hard vinyl chloride resin, ABS resin, hard plastic such as PET, fiber reinforced plastic such as glass fiber reinforced plastic (FRP), etc. is used to form a plate. A molded one can also be used. Such a material is preferable because it hardly corrodes. The fourth rigid plate-like body 24 is bent at both edges in the width direction, whereby the rigidity of the fourth rigid plate-like body 24 can be improved.

  Although the configuration of the fourth rigid plate-like body 24 is not particularly limited, for example, a resin material layer 24b is provided in advance on one surface of the base material 24a, and the resin material layer 24b and the third waterproof sheet 13 are provided. Are made of the same thermoplastic elastomer, for example, a soft vinyl chloride resin, and can be firmly bonded to each other by heat fusion, welding, adhesive, or the like. When the thermoplastic elastomer is a soft vinyl chloride resin, a strong adhesive force can be obtained even by solvent welding with tetrahydrofuran. Preferably, both heat fusion and solvent welding are adhesions of the same or equivalent materials, and by doing so, it can be made sufficiently strong and excellent in durability. Adhesion between dissimilar materials using an adhesive usually has a low adhesive force and tends to cause a problem with durability, so care must be taken when using dissimilar materials.

  As shown in FIG. 1, the amorphous sealing materials 31 to 36 are in contact with the first amorphous sealing material 31 provided between the first rigid plate-like body 21 and the channel wall surface and the second rigid plate-like body 22. As described above, the upstream edge of the third waterproof sheet 13 is in contact with the second amorphous sealing member 32 provided on the water channel side of the upstream edge of the second waterproof sheet 12 and the third rigid plate-like body 23. A third amorphous sealing material 33 provided on the water channel side, and a fourth amorphous sealing material 34 provided on the water channel side of the upstream edge of the fourth waterproof sheet 14 so as to be in contact with the fourth rigid plate-like body 24. A fifth amorphous sealing member 35 provided on the water channel side of the upstream edge of the fifth waterproof sheet 15 so as to be in contact with the fifth rigid plate member 25, a sixth rigid plate member 26, the channel wall surface, And a sixth irregular sealing material 36 provided between the two.

  The first to sixth irregular sealing materials 31 to 36 are provided so as to extend corresponding to the shapes of the first to sixth rigid plate-like bodies 21 to 26, respectively, and the first to sixth rigid plate-like bodies 21 are provided. The entire surface is in contact with one end to the other end of .about.26.

  The first to sixth amorphous sealing materials 31 to 36 are the same. The first to sixth amorphous sealing materials 31 to 36 are not particularly limited as long as the materials can obtain water-stopping properties. For example, urethane-based, silicone-based, modified silicone-based, epoxy-based, A material selected from the group consisting of amorphous caulking materials such as acrylics, butyl rubbers, and thiocols, sealing materials, etc. can be used. It is preferable to use a silicone sealant that is excellent in adhesiveness and plasticizer migration. The indefinite shape means that the shape is not particularly defined and can be easily deformed by following the shape of the surface to be coated. Moreover, it solidifies when predetermined time passes after application | coating, and maintains the shape after solidification. In addition, it is desirable to apply a known special primer in advance to the base before applying the first to sixth amorphous sealing materials 31 to 36.

  As shown in FIG. 1, the back water drainage device 50 is for draining water that has entered between the first to fifth waterproof sheets 11 to 15 and the water channel wall surface into the water channel 100. The fifth waterproof sheet 15 is provided on the most downstream side of the waterway repair structure 1. As shown in FIG. 5, a circular through hole 15 a is formed in a portion of the fifth waterproof sheet 15 that covers the bottom wall 100 c of the water channel 100, and the back surface water drainage device 50 is connected to the through hole 15 a. Yes.

  The back surface water drainage device 50 includes a first sheet material 51 and a second sheet material 52 that are made of the same material as the fifth waterproof sheet 15. The first sheet material 51 and the second sheet material 52 have a shape that is sufficiently smaller than the portion of the fifth waterproof sheet 15 that covers the bottom wall 100c of the water channel 100. The outer shapes of the first sheet material 51 and the second sheet material 52 are the same.

  The first sheet material 51 and the second sheet material 52 are provided so as to overlap in this order on the surface of the fifth waterproof sheet 15 facing the water channel 100. In the first sheet material 51, a communication hole 51 a that communicates with the through hole 15 a of the fifth waterproof sheet 15 is formed. The communication hole 51a and the through hole 15a have substantially the same shape. The peripheral edge of the communication hole 51a of the first sheet material 51 and the peripheral edge of the through hole 15a of the fifth waterproof sheet 15 are bonded over the entire periphery. This adhesion portion is a hatched portion denoted by reference numeral 51b. The first sheet material 51 and the second sheet material 52 are bonded to each other around the communication hole 51a. This adhesion portion is a hatched portion indicated by reference numeral 50b. A drain outlet 50 a made of a non-adhesive portion is formed in a part of the periphery of the first sheet material 51 and the second sheet material 52.

  That is, if water does not enter between the first to fifth waterproof sheets 11 to 15 and the water channel wall surface, the second sheet material 52 is pressed against the first sheet material 51 by the water pressure in the water channel 100 and the drain port. Since 50a closes, the water in the water channel 100 does not leak outside. On the other hand, when water permeates between the first to fifth waterproof sheets 11 to 15 and the water channel wall surface, the connection between the first to fifth waterproof sheets 11 to 15 and the water channel wall surface is the most downstream for water permeability. Back water gathers in the fifth waterproof sheet 15, and the back water reaches the communication hole 51 a through the through hole 15 a and flows between the first sheet material 51 and the second sheet material 52. Due to the water pressure of the back surface water, the second sheet material 52 is pushed into the water channel 100 to open the drain port 50a, and the back surface water is drained into the water channel 100. That is, the back surface water drainage device 50 has a one-way valve function. In addition, the back surface water drainage apparatus 50 is an example of a back surface water discharge structure, and a drainage apparatus having another configuration can also be used.

  The fixing member 40 can be selected from, for example, screws such as screw screws, metal expansion anchors, chemical anchors, plastic anchors, and the like. A concrete nail can also be used as the fixing member 40. When using a concrete nail, workability is good because it is not necessary to make a pilot hole.

  Next, a method of providing the water channel repair structure 1 configured as described above in the existing water channel 100 will be described. First to fifth waterproof sheets 11 to 15, first to sixth rigid plate-like bodies 21 to 26, an irregular sealing material accommodated in a caulking gun A, and a fixing member 40 are prepared.

  The water channel 100 is attached from the fifth waterproof sheet 15. First, as shown in FIG. 2, a sixth amorphous sealing material 36 is placed on the wall surface of the water channel 100 with a caulking gun A. A primer is undercoated on the base on which the sixth amorphous sealing material 36 is placed. Moreover, when using the fixing member 40 which needs formation of a pilot hole, a pilot hole is formed.

  A sixth rigid plate-like body 26 is joined to the downstream end of the fifth waterproof sheet 15. The sixth rigid plate-like body 26 is bent so as to match the cross-sectional shape of the water channel 100. Thereby, the end of the fifth waterproof sheet 15 also has a shape that substantially matches the cross-sectional shape of the water channel 100. And the 5th waterproof sheet 15 is arrange | positioned in the water channel 100, the 6th rigid plate-shaped body 26 is pressed against the 6th indeterminate sealing material 36, and the fixing member 40 is 5th waterproof sheet 15 from the water channel 100 inside, It penetrates through the sixth rigid plate-like body 26 and the sixth irregular sealing material 36 and is fixed to the side walls 100a, 100b and the bottom wall 100c of the water channel 100.

  The rear water drainage device 50 may be fixed to the fifth waterproof sheet 15 before the fifth waterproof sheet 15 is attached to the water channel 100, or the fifth waterproof sheet 15 may be fixed to the water channel 100 after the fifth waterproof sheet 15 is attached to the water channel 100. It may be fixed to the waterproof sheet 15.

  After that, as shown in FIG. 3, a fifth amorphous sealing material 35 is driven by the caulking gun A on the water channel side of the upstream end of the fifth waterproof sheet 15 in the water flow direction. A fifth rigid plate-like body 25 is joined to the downstream end of the fourth waterproof sheet 14. The fifth rigid plate 25 is bent according to the shape of the inner surface of the water channel in the same manner as the sixth rigid plate 26. Thereafter, the fourth waterproof sheet 14 is placed in the water channel 100 and the fifth rigid plate-like body 25 is pressed against the fifth amorphous sealing material 35, and then the fixing member 40 is moved from the inside of the water channel 100 to the fourth waterproof sheet 14. The fifth rigid plate-like body 25 and the fifth irregular sealing material 35 are passed through and fixed to the side walls 100a and 100b and the bottom wall 100c of the water channel 100.

  The 3rd waterproof sheet 13, the 2nd waterproof sheet 12, and the 1st waterproof sheet 11 are attached in order as mentioned above.

  The lengths of the first to fifth waterproof sheets 11 to 15 are adjusted so that the parts fixed by the fixing members 40 of the first to fifth waterproof sheets 11 to 15 are located other than the joint portion 102 of the water channel 100. It is preferable to keep it.

  According to the water channel renovation structure 1 according to this embodiment, the first rigid plate-like body 21 joined to the upstream edge of the first waterproof sheet 11 located in the uppermost stream and the water channel wall surface is the first. The first waterproof sheet 11 is fixed together with the first rigid plate-like body 21 by the fixing member 40 in the state in which the amorphous sealant 31 is interposed, and the first amorphous sealant 31 is interposed. The water stoppage between 11 and the waterway wall surface is ensured. Similarly, since the sixth amorphous sealing material 36 is interposed between the sixth rigid plate-like body 26 joined to the downstream edge of the fifth waterproof sheet 15 located on the most downstream side and the channel wall surface. The water stoppage on the downstream side is also ensured. Similarly, between the ends of the first to fifth waterproof sheets 11 to 15 adjacent in the water flow direction, the second to fifth rigid plate-like bodies 22 to 25 and the second to fifth amorphous sealing materials 32 to Since 35 is interposed, water stoppage is ensured. Therefore, since the water-stopping property is ensured in the entire area renovated by the renovation structure 1, water leakage is reliably prevented.

  For example, when a displacement due to an earthquake or the like occurs, the first to fifth waterproof sheets 11 to 15 are made of an elastomeric material, and thus deform to absorb the displacement by following the displacement. Therefore, it becomes difficult to apply an excessive force to the fixing part by the fixing member 40, and it is possible to prevent the fixing member 40 from coming off and the first to fifth waterproof sheets 11 to 15 from being damaged.

  As described above, the first to fifth waterproof sheets 11 to 15 are connected with the first to sixth rigid plate-like bodies 21 to 26, the first to sixth amorphous sealing materials 31 to 36, and the fixing member 40. Since it fixes to 100, without using a fusion | melting or the welding method for the connection of waterproofing sheets, while it becomes easy to perform construction workability | operativity, it can prevent a water leak reliably. Moreover, since the 1st-5th waterproof sheet 11-15 deform | transforms so that a displacement may be followed, for example, when a displacement by an earthquake etc. arises and a displacement is absorbed, a water leak can be prevented.

  Moreover, since the back surface water drainage device 50 is provided on the fifth waterproof sheet 15 to drain the back surface water into the water channel 100, the first to fifth waterproof sheets 11 to 15 are prevented from being damaged by the water pressure on the back side. it can.

  6 and 7, an irregular sealing material 37 is provided between the upper edge of the first to fifth waterproof sheets 11 to 15 and one side wall 100a of the water channel 100, Moreover, you may provide the amorphous sealing material 38 between the upper edge part of the 1st-5th waterproof sheets 11-15, and the other side wall 100b of the water channel 100. FIG. Thereby, since the sealing performance between the upper edge part of the 1st-5th waterproof sheets 11-15, and the one side wall 100a and the other side wall 100b can be improved, foreign matters, such as water and a dust, are 1st-1st. It can prevent entering into between the 1st-5th waterproof sheets 11-15 and a channel wall surface from the upper edge part of the 5th waterproof sheets 11-15. Moreover, in this modification 1, as expanded and shown in FIG. 7, the shape of the 4th amorphous sealing material 34 is changed so that it may approach a waterway wall surface toward the downstream from a water flow direction upstream. It has an inclined shape. The second, third, fifth, and sixth amorphous sealing materials 32, 33, 35, and 36 have the same shape. The first amorphous sealing material 31 has a shape inclined so as to approach the water channel wall surface from the downstream side in the water flow direction toward the upstream side. By making the first to sixth amorphous sealing materials 31 to 36 into an inclined shape as described above, the flow of water in the water channel 100 becomes smooth, and the connection portions of the first to fifth waterproof sheets 11 to 15 are made. It is possible to suppress the accumulation of dust and the like in the vicinity.

  Moreover, you may join the rigid board 27a to the water channel side of the edge part of the water flow direction upstream of the 5th waterproof sheet 15 like the modification 2 shown in FIGS. Similarly, a rigid plate-like body 27b is joined to the water channel side of the upstream end of the fourth waterproof sheet 14 in the water flow direction, and the rigid plate-like body is attached to the water channel side of the upstream end of the third waterproof sheet 13 in the water flow direction. 27c can be joined and the rigid plate-like body 27d can be joined to the water channel side of the upstream end of the second waterproof sheet 12 in the water flow direction. FIG. 10 shows an enlarged view of a state in which the rigid plate-like body 27 b is joined to the fourth waterproof sheet 14. The rigid plate-like bodies 27 a to 27 d have the same basic configuration as the first rigid plate-like body 21, but show an example of a flat plate shape. Since it can be bent and its shape can be maintained, construction is facilitated. In addition, by joining the rigid plate-like bodies 27a to 27d and the waterproof sheets 11 to 15, a tensile force is applied to the waterproof sheets 11 to 15 attached to the water channel wall surface by the fixing member 40 due to the relative displacement of the water channel component member 101 or the like. Even in this case, since the stress is dispersed by the rigid plate-like bodies 27a to 27d joined to the waterproof sheets 11 to 15, the connecting portions of the waterproof sheets 11 to 15 can be protected.

  In the second modification, corner rigid plates 28a to 28e are provided as shown in FIG. The corner rigid plate-like bodies 28a to 28e are disposed at portions corresponding to the corners of the water channel 100 in the first to fifth waterproof sheets 11 to 15. As shown in FIG. 11, the corner rigid plate-like bodies 28a to 28e are fixed to the water channel 100 by the fixing member 40 via the corner irregular sealing material 39a. According to the second modification, the vicinity of the corner of the water channel 100 in the first to fifth waterproof sheets 11 to 15 can be reliably fixed to the water channel 100.

  As shown in FIG. 9, the corner rigid plate-like bodies 28 b and 28 d disposed in the portion corresponding to the joint portion 102 are divided into two so as not to cover the joint portion 102. Thereby, the relative displacement of adjacent waterway component members 101 and 101 can be permitted.

  Moreover, in the modification 3 shown in FIG.12 and FIG.13, the waterproof sheet is the 1st-3rd waterproof sheet 11-13. The second waterproof sheet 12 and the third waterproof sheet 13 are formed by connecting two sheet materials in advance in the middle portion in the longitudinal direction. Upper rigid plate-like bodies 29a to 29e are disposed at portions corresponding to the upper sides of the side walls 100a and 100b of the water channel 100 in the first to third waterproof sheets 11 to 13, respectively. As shown in FIG. 13, the upper rigid plate-like body 29a is fixed to the water channel 100 by the fixing member 40 via the upper amorphous sealing material 39b. According to the third modification, the vicinity of the upper sides of the side walls 100a and 100b of the water channel 100 in the first to third waterproof sheets 11 to 13 can be reliably fixed to the water channel 100, and water, foreign matter, and the like are first to first. It can prevent entering into between the 1st-3rd waterproof sheets 11-13 and a channel wall surface from the upper part of the 3rd waterproof sheets 11-13.

  As shown in FIG. 12, the upper rigid plate-like body 29 d disposed at a portion corresponding to the joint portion 102 is divided into two so as not to cover the joint portion 102. Thereby, the relative displacement of adjacent waterway component members 101 and 101 can be permitted.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the water channel repair structure and the repair method according to the present invention can be used, for example, when a concrete water channel is repaired. Moreover, it can be used also when repairing a circular water channel or a rectangular water channel by processing a waterproof sheet into a cylinder shape.

DESCRIPTION OF SYMBOLS 1 Waterway repair structure 11-15 1st-5th waterproof sheet 15a Through-hole 21-26 1st-6th rigid board-like body 28a-28e Corner | corner rigid board-like body 29a-29e Upper side rigid board-like body 31-36 First to sixth amorphous sealing material 39a Corner irregular sealing material 39b Upper irregular sealing material 40 Fixed member 50 Drainage device 50a Drain port 51 First sheet material 51a Communication hole 52 Second sheet material 100 Water channel 100a One side wall 100b The other side wall 100c Bottom wall

Claims (7)

In the repair structure of a waterway that repairs the waterway by covering the wall of the existing waterway with a waterproof sheet,
A plurality of elongated thermoplastic elastomeric waterproof sheets,
A rigid plate,
An irregular sealing material,
A fixing member,
Each waterproof sheet is formed so as to extend from the upper side of one side wall of the water channel to the bottom wall and the upper side of the other side wall, and has a shape having a predetermined length in the water flow direction,
The above waterproof sheets are installed side by side in the water flow direction,
The rigid plate-like body is joined to the water channel wall surface side of the upstream edge of the upstreammost waterproof sheet located in the most upstream in the water flow direction, and the irregular sealing is provided between the rigid plate body and the water channel wall surface. Material is interposed, the upstream edge of the most upstream waterproof sheet is fixed to the water channel with the rigid plate and the irregular sealing material by the fixing member,
The rigid plate-like body is joined to the downstream wall of the downstreammost waterproof sheet positioned downstream in the water flow direction, and the irregular sealing is provided between the rigid plate-like body and the channel wall. The material is interposed, and the downstream edge of the most downstream waterproof sheet is fixed to the water channel together with the rigid plate-like body and the irregular sealing material by the fixing member,
The ends of the waterproof sheets that are positioned so as to face the water channel among the waterproof sheets that are arranged so that the ends of the waterproof sheets adjacent in the water flow direction overlap each other in the thickness direction. The rigid plate-like body is joined to the water channel wall surface side of the section, and the end of the waterproof sheet located on the water channel wall surface side is provided with the irregular sealing material so as to contact the rigid plate-like body, The fixing member is an end portion of the waterproof sheet positioned so as to face the water channel arranged so as to overlap in the thickness direction, the rigid plate-like body, the irregular sealing material, and an end of the waterproof sheet positioned on the water channel wall surface side Water channel repair structure characterized by being fixed to the water channel through the section. In the water channel improvement structure according to claim 1,
A through hole is formed in the waterproof sheet, and a drainage device for draining water that has entered between the waterproof sheet and the wall surface of the water channel to the water channel is connected to the through hole,
The drainage device includes a first sheet material and a second sheet material,
The first sheet material and the second sheet material are provided so as to overlap in this order on a surface facing the water channel of the waterproof sheet,
In the first sheet material, a communication hole communicating with the through hole is formed, and the communication hole peripheral portion of the first sheet material and the through hole peripheral portion of the waterproof sheet are bonded over the entire periphery,
The first sheet material and the second sheet material are bonded to each other around the communication hole, and a part of the periphery of the first sheet material and the second sheet material is formed from a non-bonded portion. A waterway renovation structure characterized in that a drain outlet is formed. In the water channel repair structure according to claim 1 or 2,
The rigid plate-like body is disposed at a portion corresponding to the corner of the water channel in the waterproof sheet, and the rigid plate-like body is fixed to the water channel by the fixing member via the amorphous sealing material. Waterway renovation structure characterized by that. In the improvement structure of the waterway as described in any one of Claim 1 to 3,
The rigid plate-like body is disposed in a portion of the waterproof sheet corresponding to the upper side of the side wall of the water channel, and the rigid plate-like body is fixed to the water channel by the fixing member via the amorphous sealing material. Waterway renovation structure characterized by that. In the improvement structure of the waterway as described in any one of Claim 1 to 4,
The waterproof sheet is made of soft vinyl chloride resin,
The rigid plate has a steel plate and a soft vinyl chloride resin laminated on the steel plate,
The rigid plate-like body is bonded to the waterproof sheet by bonding a laminated vinyl chloride resin to the waterproof sheet. In the improvement structure of the waterway as described in any one of Claim 1 to 5,
A rigid plate-like body is joined to the water channel wall surface side at the end of the waterproof sheet in the water flow direction, and the rigid plate-like body on the water channel wall surface side is fixed to the water channel together with the end of the waterproof sheet by the fixing member. Waterway renovation structure characterized by that. In the repair method of a waterway that repairs the waterway by covering the wall surface of the existing waterway with a waterproof sheet,
A plurality of elongated thermoplastic elastomeric waterproof sheets,
A rigid plate,
An irregular sealing material,
Prepare a fixing member,
Each of the waterproof sheets is formed to extend from the upper side of one side wall of the water channel to the bottom wall and the upper side of the other side wall, and has a shape having a predetermined length in the water flow direction.
After that, install a plurality of the above waterproof sheets side by side in the water flow direction,
The rigid plate-like body is joined to the water channel wall surface side of the upstream edge of the uppermost upstream waterproof sheet located in the uppermost stream in the water flow direction, and the irregular sealing is provided between the rigid plate body and the water channel wall surface. The material is interposed, the upstream edge of the most upstream waterproof sheet is fixed to the water channel together with the rigid plate and the irregular sealing material by the fixing member,
The rigid plate-like body is joined to the water channel wall surface side at the downstream edge of the most downstream waterproof sheet located at the most downstream in the water flow direction, and the irregular sealing is provided between the rigid plate body and the water channel wall surface. The material is interposed, and the downstream edge of the most downstream waterproof sheet is fixed to the water channel together with the rigid plate and the irregular sealing material by the fixing member,
In the end portion of the waterproof sheet positioned so as to face the water channel among the waterproof sheets arranged to overlap each other in the thickness direction, the end portions of the waterproof sheet adjacent to each other in the water flow direction are arranged. The rigid plate-like body is joined to the waterway wall surface side, the endless sealing sheet positioned on the waterway wall surface side is provided with the irregular sealing material so as to contact the rigid plate-like body, and the fixing member is , Penetrating through the end of the waterproof sheet positioned so as to face the water channel arranged so as to overlap the thickness direction, the rigid plate-like body and the amorphous sealing material, and the end of the waterproof sheet positioned on the water channel wall surface side And then rehabilitating the waterway.

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