JP6057325B2 - Repair structure and repair method for existing waterways - Google Patents

Description

  The present invention relates to a repair structure and a repair method for an existing water channel.

  As a method for repairing the existing water channel, for example, “a fixing member is disposed on the inner surface of the existing water channel, an FRP plate is stretched on the fixing member, and then, between the inner surface of the existing water channel and the FRP plate. There is a method of “setting cement milk” (see Patent Document 1). However, according to this repairing method, it takes time to cure the cement milk placed between the inner surface of the existing water channel and the FRP plate, and there arises a problem that the operation cannot be proceeded quickly.

  Therefore, it is possible to adopt a method of “providing a lining plate on the inner surface of an existing water channel and repairing the inner surface by providing a buffer material as a backing material on the inner surface and fixing the lining plate to the buffer material”. Possible (see Patent Document 2). According to this method, since it is not necessary to place a backing material such as cement milk, it is possible to proceed quickly.

  However, according to this method, there is a risk that water enters from both sides between the bottom surface of the existing water channel and the buffer material, or between the buffer material and the lining plate, and this water may stay. In this regard, the same document states that even if water stays between the inner surface and the cushioning material, or between the cushioning material and the lining plate, and the retained water repeatedly freezes and melts, the volume change due to this is absorbed by the buffering material. (Paragraph [0013]), “the volume change when the staying water is frozen and dissolved is not directly transmitted to the lining plate” (paragraph [0014]).

  However, if water stays between the bottom surface of the existing water channel and the buffer material or between the buffer material and the lining plate, the buffer material is deteriorated. The document states that if a chemically and physically stable material is selected as a buffer material, its performance does not deteriorate even in an embedded environment (paragraph [0013]). It is preferable not to stay. Moreover, it cannot fully suppress that the volume change of the water which stagnates between a buffer material and a lining board affects a lining board.

  Therefore, in order to solve the above problem, that is, in order to prevent water from entering from both sides, “a corner member for closing the joint of the adjacent rehabilitation panel with an angle, A corner member provided with a main body including a first part and a second part having a width spanning the adjacent retreading panel and forming a predetermined angle, and a seal part provided on the back surface of the main body "(see Patent Document 3, etc.) ). However, when a corner member is used, the work load for installing the corner member increases. Further, foreign matters such as dust flowing in the water channel may be caught on the corner member, and the material cost increases.

Japanese Patent Laid-Open No. 3-247809 JP 2008-95428 A JP 2009-191553 A

  The main problem to be solved by the present invention is that there is no risk of water entering from both sides between the panel plate disposed on the bottom surface of the existing water channel and the bottom surface, and the existing water channel that does not require a member such as a corner member. It is to provide a repair structure and a repair method.

The present invention for solving this problem is as follows.
[Invention of Claim 1]
The repair structure of the existing waterway,
The side and bottom sides of the existing water channel are covered with a lining material,
A sealing layer is provided on the top surface of the covering material covering both sides of the bottom surface;
A cushioning material is disposed between the lining materials covering both sides of the bottom surface,
A panel plate is disposed on the cushioning material and the sealing layer,
Sites on at least the bottom sides of the panel plate is fixed to the bottom surface through the lining material and the sealing layer,
The repair structure of the existing waterway characterized by this.

(Main effects)
In the present invention, a site on the bottom sides of the panel plate is fixed to the bottom surface through the lining material and the sealing layer. Therefore, there is no possibility that water may enter from both sides between the panel plate and the bottom surface, and a member such as a corner member is not necessary.

[Invention of Claim 2]
A coating layer of a filler containing a hydraulic resin is provided on the bottom surface,
The buffer material is disposed on the coating layer,
Site between the bottom sides of the panel plate is also fixed to the bottom surface through the cushioning material and the coating layer,
The repair structure of the existing waterway of Claim 1.

(Main effects)
In the present invention, a coating layer of a filler containing a hydraulic resin is provided on the bottom surface, a buffer material is disposed on the coating layer, and the buffer material and the coating layer are also disposed between the bottom side portions of the panel board. It is fixed to the bottom surface through. Therefore, it is possible to reliably prevent the panel plate from rising between both side portions of the bottom surface.

[Invention of Claim 3]
The width of the covering material covering both sides of the bottom surface is 40 to 60 mm, respectively.
The repair structure of the existing waterway of Claim 1 or Claim 2.

(Main effects)
In the present invention, the width of the covering material that covers both sides of the bottom surface is set to 40 mm or more. Therefore, the sealing layer provided on the upper surface of the covering material covering both sides of the bottom surface can be made sufficiently wide, and water can be more reliably prevented from entering from both sides between the panel plate and the bottom surface. it can.

[Invention of Claim 4]
A repair method for an existing waterway,
Cover side and bottom sides of the existing water channel with lining material,
Applying a sealing material on the top surface of the covering material covering both sides of the bottom surface to provide a sealing layer,
While arranging a cushioning material between the covering materials covering both sides of the bottom surface, arranging a panel plate on the cushioning material and the sealing layer,
The site on at least the bottom sides of the panel plate, fixed to the bottom surface through the lining material and the sealing layer,
The repair method of the existing waterway characterized by this.

(Main effects)
In this invention, there exists an effect similar to the invention of Claim 1.

  According to the present invention, there is no risk of water entering from both sides between the panel plate disposed on the bottom surface of the existing water channel and the bottom surface, and a repair structure and a repair method for the existing water channel that does not require a member such as a corner member, and the like. Become.

It is a front view of the target open water channel (1) and the pre-processed open water channel (2). It is a front view of the open channel (2) that has been lined (1) and formed with perforations. It is the front view of (2) an open channel which fixed the hole-in anchor (1), and provided the coating layer and the sealing layer. It is a front view of an open channel (2) in which a cushioning material is arranged (1) and a panel plate is arranged. It is the example of arrangement | positioning (a) of a panel board and a buffer material with respect to an open channel, the top view (b) of a panel board and a buffer material, and the front view (c) of a panel board and a buffer material. It is an example of a form of an anchor stop means.

Next, an embodiment of the present invention will be described.
Repair structures and repair method of this embodiment is to repair the inner surface of such bottom surface or the side surface of the existing waterways. As an existing water channel, in addition to an open water channel, a closed water channel and the like can be targeted. However, in the following, an example of an open water channel will be described.

(Preprocessing)
As shown in (1) in FIG. 1, open channel (existing waterways) 100 of this embodiment, the bottom surface 101a and both side surfaces 101b are defined by concrete 101. Bottom surface 101a and side 101b are worn or damaged by the flowing water or earth and sand, conventionally, has been repaired in a similar manner the bottom surface 101a and side surfaces 101b using lining material or the panel plate.

However, in reality, different degrees of wear and damage at the bottom surface 101a and side surface 101b, typically towards the wear and damage of the bottom surface 101a has become intense. Therefore, in this embodiment, it is assumed that different aspects of repair at the bottom surface 101a and side 101b. However, the pre-processing can be the same as the conventional one.

That is, first, WJ performed vandalism cleaning and eye bottom surface 101a and side surfaces 101b using washer high-pressure jet of (water jet), etc., and, if necessary, as shown in FIG. 1 (2) The damaged surface layer 101x of the concrete 101 is removed.

(Lining)
Next, as shown in (1) in FIG. 2, continuously covering from both sides 101b of the open channel 100 to the bottom surface sides 101c (the range indicated by reference numeral W2) with lining material 10 of mortar (covering Engineering). By this lining, the crack etc. which exist in the both sides 101b of the open channel 100 are water-stopped, and damage etc. are repaired. Since the wear / damage of the side surface 101b is usually lighter than the wear / damage of the bottom surface 101a, the lining with the lining material 10 can be sufficiently repaired. Also, this lining does not cause a delay in work, unlike backfilling (filling) cement milk or the like between the inner surfaces 101b, 101c of the open channel 100 and the panel plate or the like.

  The lining of the lining material 10 can be performed by, for example, painting with a trowel or the like, or spraying with a spraying machine or the like.

  The covering thickness of the covering material 10 is preferably 5 to 20 mm, more preferably 10 to 15 mm.

  Furthermore, the width W2 of the covering material 10 covering the bottom side portions 101c is preferably 40 to 60 mm, more preferably 50 mm. If the width W2 of the lining material 10 is too narrow, there is a possibility that the effects of the sealing layer 50 described later cannot be fully exhibited. On the other hand, even if the width W2 of the lining material 10 is too wide, the effect of the sealing layer 50 is not improved, the cost effectiveness is inferior, and the width W1 for disposing the cushioning material 42 described later is narrowed. Therefore, the buffer effect is inferior.

(Perforation)
Next, as shown in (2) in FIG. 2, to form the perforations 21 from the bottom surface 101a of the open channel 100 using a drill or the like (not shown) to the lining concrete 101. The perforations 21 are formed so as to coincide with holes 43x (see FIG. 5) of the panel plate 43 described later. Therefore, the perforations 21 can be formed at an appropriate number and position according to the size of the panel plate 43, that is, the width of the open channel 100.

  However, it is preferable to form the perforations 21 at least on both sides 101c of the bottom surface. In this embodiment in which both sides 101c of the bottom surface are covered with the covering material 10, the perforations 21 are formed on the covering material 10.

Further, in this embodiment, also forms a perforation 21 in the region between the bottom sides 101c of the bottom surface 101a (the range indicated by reference numeral W1). Since the site between the bottom sides 101c is not covered by the lining material 10, the perforations 21 are formed directly from the bottom surface 101a on.

  Although the perforations 21 are formed so that the “deepest position” is the same as in the illustrated example, the “depth” is not particularly illustrated, but the “depth” is the same, that is, the lining material 10 is interposed. The deepest position of the perforation 21 in the bottom side portions 101c may be formed so as to be shallower than the deepest position of the perforation 21 between the bottom side portions 101c. The former is preferably employed when emphasizing strength, and the latter is preferably employed when using the anchor means 30 and 32 having the same length at all positions to reduce costs.

(Hold-in anchor fixation)
Next, as shown in (1) of FIG. 3, an expandable hole-in anchor 30 having a female screw is inserted into the perforation 21, and the core rod 31 provided at the center of the hole-in anchor 30 is removed with a hammer or the like. The hole-in anchor 30 is driven to expand (expand diameter). By this expansion, the base end portion of the hole-in anchor 30 bites into the lining concrete 101, and the hole-in anchor 30 is fixed to the lining concrete 101.

  In this regard, in this embodiment, the expandable hole-in anchor 30 is used, but instead of this, for example, an adhesive anchor bolt provided with a female screw may be used. When an adhesive anchor bolt is used, the anchor bolt is inserted into the perforation 21 and filled with a filler such as cement, mortar, or adhesive, and the anchor bolt is fixed to the lining concrete 101.

(Formation of sealing layer and coating layer)
Next, as shown in (2) of FIG. 3, a filler (putty) containing a hydraulic resin such as a hydraulic polyurethane resin, an epoxy resin, a silicone sealant, or a urethane sealant at a portion excluding both side portions 101 c of the bottom surface 101 a. Is applied to form the coating layer 41. The formation of the coating layer 41, is achieved waterproofing, etc. of the bottom surface 101a is, also, a hydraulic resins may have an adhesive property, the adhesive can be achieved with the buffer material 42 and the bottom surface 101a to be described later. The coating thickness of the coating layer 41 is preferably 1 to 5 mm, more preferably 3 mm.

  On the other hand, before and after the application of the filler, a sealing material made of polyurethane resin, epoxy resin, silicon sealant, urethane sealant or the like is applied to the upper surface of the covering material 10 covering the bottom side portions 101c to form the sealing layer 50. Form. Formation of the sealing layer 50 prevents water from entering between a panel plate 43 described later and the covering material 10 on the bottom side portions 101c. The coating thickness of the sealing layer 50 is preferably 1 to 5 mm, more preferably 3 mm.

(Arrangement of cushioning material and panel board)
Next, as shown in (1) of FIG. 4, a buffer material 42 is disposed on the coating layer 41 of the filler containing the hydraulic resin, and as shown in (2) of FIG. The panel plate 43 is disposed on the sealing layer 50. The space between the covering materials 10 covering the bottom side portions 101 c is filled by the arrangement of the buffer material 42, and a new bottom surface of the open channel 100 is formed by the arrangement of the panel plate 43.

  The cushioning material 42 and the panel plate 43 can be arranged in the order of the cushioning material 42 and the panel plate 43. However, as shown in FIG. For example, it is preferable to joint the buffer material 42 and the panel plate 43 at the same time because the construction time at the site can be shortened.

  Examples of the buffer material 42 include foamed resin foam made of foamed resin such as foamed polyethylene, foamed polystyrene, foamed polypropylene, and foamed urethane, and foamed rubber molding material made of foamed rubber such as foamed ethylene propylene rubber and foamed polybutadiene rubber. Can be used. The thickness of the buffer material 42 is preferably 7 to 15 mm, more preferably 10 to 13 mm.

  Moreover, in the example of illustration, although the surface (panel board 43 side) and back surface (application layer 41 side) of the buffer material 42 are made into a plane, although the back surface of the buffer material 42 is made into a plane, there are several on the surface. It is preferable that the protrusion is formed. The protrusions are preferably arranged in a staggered manner, and the size of each protrusion is, for example, a diameter of 2 to 3 mm, a height of 2 to 3 mm, and a distance between tips of adjacent protrusions of 5 to 6 mm.

  On the other hand, as the panel board 43, resin panels, such as a fiber reinforced resin panel (FRP panel, FRPM panel, FFU panel, etc.) and a hard vinyl chloride panel, can be used, for example. The thickness of the panel plate 43 can be preferably 3 to 10 mm, more preferably 5 to 8 mm.

(Panel board fixing (anchor stop))
Then, to fix the panel plate 43 to the bottom surface 101a. This fixing can be by an appropriate method, in the present embodiment that secure the hole in anchor 30 on the bottom surface 101a, as shown in (1) in FIG. 6, the hole-in anchors 30 from the top panel plate 43 The countersunk bolt 32 with a countersunk packing is screwed to the panel plate 43, and the panel plate 43 is anchored.

As shown in FIG. 5 (a), the anchoring is performed at three positions on the both sides 101c of the bottom surface of each panel plate 43 at appropriate intervals in the flow direction of the open channel 100, and at the center of the bottom surface of each panel plate 43. It is performed at a total of nine places, three places at an appropriate interval in the flow direction of the open channel 100 on the part. This anchoring, sites on the bottom side portions 101c of the panel board 43 is fixed to the bottom surface 101a (101c) through the lining material 10 and the sealing layer 50. Also, sites on the central portion of the bottom surface of the panel board 43 is fixed to the bottom surface 101a through the coating layer 41 and buffer material 42.

In this embodiment, it is integral and the lining material 10 and the bottom surface sides 101c, also, because between the lining member 10 and the panel plate 43 is sealed by a sealing layer 50, the water from both sides There is no risk of entering. Furthermore, lining material 10 on the bottom surface sides 101c may function as a spacer also has, it can be kept the distance between the panel plate 43 and the bottom surface 101a properly.

In the above description, the anchor means including the expandable hole-in anchor 30 and the countersunk bolt 32 is used, and the both 30 and 32 are screwed together to be anchored. However, in addition to this, for example, instead of the countersunk bolt 32, as shown in FIG. 6 (2), a cutting bolt (hexagon bolt) 33, a spacer 34, and a claw nut 35 are used. Anchoring with 33, 34, 35 and the hole-in anchor 30 is also possible. According to this embodiment, in order to function as a spacer and the spacer 34 is the bottom surface 101a and the panel plate 43 can be kept more proper distance between them 43,101a in the width direction central portion of the bottom surface 101a.

(Other)
Thereafter, if necessary, the sealing material protruding from between the panel board 43 and the lining material 10 is wiped off, and the anchored portion is sealed, and the repair of the open channel 100 is completed.

  The present invention is applicable as a repair structure and repair method for existing water channels such as open water channels and closed water channels.

  DESCRIPTION OF SYMBOLS 10 ... Covering material, 21 ... Perforation, 30 ... Hole-in anchor, 32 ... Countersunk bolt, 33 ... Cutting bolt, 34 ... Spacer, 35 ... Nut with nail, 41 ... Coating layer, 42 ... Buffer material, 43 ... Panel plate, 50 ... sealing layer, 100 ... open channel, 101 ... lining concrete, 101a ... bottom surface, 101b ... side surface, 101c ... both sides of the bottom surface.

Claims (4)

The repair structure of the existing waterway,
The side and bottom sides of the existing water channel are covered with a lining material,
A sealing layer is provided on the top surface of the covering material covering both sides of the bottom surface;
A cushioning material is disposed between the lining materials covering both sides of the bottom surface,
A panel plate is disposed on the cushioning material and the sealing layer,
Sites on at least the bottom sides of the panel plate is fixed to the bottom surface through the lining material and the sealing layer,
The repair structure of the existing waterway characterized by this. Coating layer of filler containing hydraulic resin is provided on the bottom surface,
The buffer material is disposed on the coating layer,
Site between the bottom sides of the panel plate is also fixed to the bottom surface through the cushioning material and the coating layer,
The repair structure of the existing waterway of Claim 1. The width of the covering material covering both sides of the bottom surface is 40 to 60 mm, respectively.
The repair structure of the existing waterway of Claim 1 or Claim 2. A repair method for an existing waterway,
Cover side and bottom sides of the existing water channel with lining material,
Applying a sealing material on the top surface of the covering material covering both sides of the bottom surface to provide a sealing layer,
While arranging a cushioning material between the covering materials covering both sides of the bottom surface, arranging a panel plate on the cushioning material and the sealing layer,
The site on at least the bottom sides of the panel plate, fixed to the bottom surface through the lining material and the sealing layer,
The repair method of the existing waterway characterized by this.