JP2001355280A - Jointing means for side-ditch made of concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jointing means for a side-ditch made of concrete, positively fixing and jointing a side-ditch body and a cover body to each other. SOLUTION: This jointing means is provided with an anchor reinforcement 11 having an uneven outer surface and fixed to a cover body 2, and a recessed part 6 formed in a side wall upper face 5 of a side-ditch body 1. A spiral groove 6a is formed on the inner side face of the recessed part 6. The anchor reinforcement 11 is inserted in an adhesive 9 filled in the recessed part 6, and the anchor reinforcement is fixedly held into the recessed part by solidifying the adhesive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete gutter for collecting and draining rainwater installed on roads, residential lands, parks and the like.

[0002]

2. Description of the Related Art As a conventional concrete gutter, a gutter having a substantially U-shaped gutter main body and a lid closing an upper opening thereof is known. In this type of gutter,
Because the gutter body and the lid have a separate structure,
Noise, vibration, and impact are generated when the vehicle passes, and the impact may damage the lid. In addition, there is a possibility that the gutter main body may be damaged by a large bending moment acting on the side wall base of the gutter main body due to earth pressure.

[0003] Therefore, in order to increase the strength, the thickness of the gutter main body or its side wall and the lid is increased, the number of reinforcing reinforcing bars buried therein is increased, or the gutter main body and the lid are mutually joined by joining means. Fixed gutters have conventionally been employed.

[0004] The joining means for fixing the side groove main body and the lid body includes:
An anchor streak fixed to the lower surface of the lid and a concave portion formed on the upper surface of the side wall of the side groove main body and filled with an adhesive are provided. The side groove main body and the lid are joined to each other by inserting the anchor streaks into the adhesive filled in the recess and solidifying the adhesive. However, in this gutter,
Since the inner surface of the concave portion is flat, the solidified adhesive may peel off at the boundary portion with the inner surface of the concave portion due to shrinkage or the like, and the anchor streak may come off.

[0005]

SUMMARY OF THE INVENTION In view of the drawbacks of the prior art, it is an object of the present invention to provide a concrete gutter joining means for securely fixing and joining a gutter body and a lid. It is in.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide a concrete gutter joining means according to the present invention in which an anchor streak fixed to a lid and having irregularities on its outer surface and an upper surface of a side wall of a gutter main body. A spiral groove is formed on the inner surface of the concave portion, and the anchor streaks are inserted into the adhesive filled in the concave portion, and the adhesive is solidified, whereby the anchor streaks are inserted into the concave portion. It is solved by holding fixed.

As a result, the adhesive which has flowed into the spiral groove formed on the inner surface of the concave portion and solidified serves as a means for restricting the movement of the anchor streaks. In the case of peeling in the above, the anchor streaks do not come off.

In the method of forming the concave portion of the joining means, when forming the joining means in the side groove main body, a punching die provided with a convex portion on the outer surface is distributed and buried on the upper surface of the side wall,
The problem is solved by forming the concave portion and the spiral groove at the same time by rotating the punching die after the gutter body has dried to remove it from the gutter body.

In an apparatus used in a method for forming a concave portion of a joining means, a mold mounting member fixed to an upper portion of a mold for forming a gutter main body, and fixing means attached to the mold mounting member. And a punching die having a convex portion for forming a spiral groove on the inner surface, which is detachably fixed by the fixing means at a position corresponding to a concave portion formed on the upper surface of the side wall of the side groove main body. It is solved by having.

[0010] This makes it possible to easily form the concave portion having the groove in the concrete gutter main body, including the mass productivity, which has been difficult until now.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of a concrete gutter joining means according to the present invention. The side groove is provided with a side groove main body 1 having a substantially U-shaped cross section with an open upper side, and a lid 2 for closing an open portion of the side groove main body. Reinforcing reinforcing bars (not shown) are embedded in the gutter main body 1 and the lid 2.

The side groove main body 1 is formed of both side walls 3 and a bottom 4 connected to these side walls. The upper surface 5 of the side wall 3 is formed with a recess 6 for filling with an adhesive 9 for bonding to the lid 2, and a spiral groove 6 a is formed on the inner surface of the recess 6. The concave portions 6 are provided at a plurality of positions, and are distributed and arranged on the upper surface 5 of the side wall 3 at positions corresponding to the lid 2. Openings 7 extending in a tapered shape are formed at appropriate intervals in the bottom 4 of the side wall body 1. The opening 7 functions to permeate the flowing water in the gutter into the underground when used without being closed, and prevents the cast concrete from peeling off from the bottom 4 when closed with concrete at the site.

In this case, the lid 2 has a rainwater inlet 8 formed on one side, and the position, size and number of rows of the rainwater inlet are set and changed according to the installation location. .

An insert fitting 10 is buried in the lower surface of the cover 2 at the time of manufacture of the cover.
Are arranged at positions corresponding to the concave portions 6.
The insert metal fitting 10 is formed so that an anchor bar 11 for joining the lid body 2 and the side groove main body 1 can be screwed in. The anchor bar 11 has irregularities on its outer surface to further increase the adhesive force with the adhesive 9. Have.

The gutter constructed as described above is constructed as follows, taking as an example an inclined culvert gutter. First, the U-shaped gutter main body 1 is buried in a road shoulder. Next, concrete is added to the bottom 4 of the gutter main body 1 according to the required water channel gradient.
After compaction, compaction and surface leveling are performed. On this occasion,
Since the opening 7 of the bottom 4 is tapered downward, the cast concrete and the bottom 4 are firmly joined. Then, the recess 6 formed in the upper surface 5 of the side wall 3
Is filled with an adhesive 9 such as mortar or a synthetic resin, and an anchor bar 11 is inserted into the insert fitting 10 of the lid 2.
Screw. Then, the anchor streaks 11 are inserted into the adhesive 9 in the concave portion 6 by using guide marks (not shown) provided at a plurality of positions in the side groove main body 1 and the lid 2 in advance as guides. Close the upper opening of the. At this time, since the spiral groove 6a is formed on the inner side surface of the concave portion 6, for example, when filling the concave portion with the high-viscosity synthetic resin adhesive 9, and inserting the anchor streaks 11 into this adhesive. In this case, the adhesive can smoothly flow into the groove, and the retention of bubbles can be prevented. Then, the solidification of the adhesive 9 fixes the side groove main body 1 and the lid 2 to each other, and the adhesive 9 flowing into the spiral groove 6a is connected to the anchor streaks 11, that is, the movement restricting means of the lid 2. Become.

The concave portion of the joining means is used to form a side groove main body when forming the side groove main body 1 (not shown).
And the mold mounting member 23 and the punching die 21.

The mold for the main body of the gutter is preferably a mold mounting member 2.
3 is provided (not shown).

The form mounting member 23 has fixing means (not shown) corresponding to the form for the side groove main body, and a through hole 23a for fixing the punching die 21 (FIG. 2). The position and the number of the through holes 23a are set so as to correspond to the lid 2, and the side wall of the side groove main body 1 when the formwork mounting member 23 is fixed to the upper part of the formwork for the side groove main body. 3 is provided so that the position of the concave portion 6 with respect to the upper surface 5 is determined.

On the outer surface of the punching die 21, a convex portion 21a for forming a spiral groove 6a on the inner side surface of the concave portion 6 is formed. 21b
Further, a fixing cylindrical hole 21c is provided (FIG. 3).

Using these, a recess is formed in the side groove main body as follows.

First, the punching die 21 is fixed to the mold mounting member 23 using fixing means. As shown in FIG. 2, the fixing means used includes a set boss 22, a bolt 26, a washer 24, and a nut 25. The bolt 26 is inserted into the set boss 22, the lower surface is inserted into the mold mounting member 23, and the upper surface is inserted. After the washer 24 is inserted into the bolt 26 protruding from the mold, the nut 25 is tightened, so that only the fixing means can be attached to the formwork attaching member 23 alone. Then, the punch 21 is inserted into the set boss 22 on the lower surface side, and the nut 25 is further tightened. By tightening the nut 25 in this manner, an axial load due to the bolt 26 is applied to the set boss 22, the outer diameter of the set boss increases, and the cylindrical hole 21c is tightened, so that the punch 21 is fixed. Therefore, depending on the amount of tightening of the nut 25, the punching die 21 can be independently attached to and detached from the mold mounting member 23, which is suitable for repetitive work. As described above, a predetermined number of the cutting dies 21 are distributed and arranged on the mold mounting member 23 and fixed.

Next, concrete is poured into a mold for the gutter main body, and a mold mounting member 23 to which the punching die 21 is fixed is fixed to an upper portion of the mold by fixing means (not shown). Thus, the punching die 21 is embedded in the side groove main body 1.

After the gutter main body 1 has dried, the form mounting member 2
Remove 3 At this time, the punching die 2 is
1 remains, and only the punching die 21 remains in the side groove main body 1. Since the hexagonal hole 21b for withdrawal is provided inside the punching die 21, the punching die 21 is rotated with a special tool or the like to pull out from the side groove main body 1. As a result, the die 21
And the convex portion 21a simultaneously forms the concave portion 6 and the spiral groove 6a on the upper surface 5 of the side wall of the side groove main body 1.

[0025]

According to the present invention, there is provided a concrete gutter joining means for securely fixing and joining a gutter main body and a lid.

[Brief description of the drawings]

FIG. 1 shows a cross-sectional view of a concrete gutter having joining means according to the invention.

FIG. 2 shows a cross-sectional view of a punching die fixed to a die mounting member.

FIG. 3 shows a front view of a punching die.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side groove main body 2 Lid 3 Side wall 4 Bottom 5 Side wall upper surface 6 Depression 6a Spiral groove 7 Opening 8 Rainwater inlet 9 Adhesive 10 Insert metal fitting 11 Anchor streak 21 Die 21a Convex part 22 Set boss 23 Form mounting member 24 Washer 25 Nut 26 Bolt

Claims (3)

[Claims] 1. A gutter body (1) having a substantially U-shaped cross section with an open upper side, and a lid (2) having a rainwater inlet for closing an opening of the gutter body are fixedly joined to each other. For joining concrete gutters (6, 11) for anchors (11) fixed to the lid (2) and having an irregular surface on the outer surface, and formed on the upper surface (5) of the side wall of the gutter body (1) A spiral groove (6a) is formed on the inner surface of the concave portion (6), and the adhesive (9) in which the anchor line (11) is filled in the concave portion (6) is provided. ), The anchoring line being fixed and held in the recess by solidifying the adhesive. 2. The method for forming a recess of a joining means according to claim 1, wherein when forming the side groove main body, the upper surface of a side wall thereof is formed.
In addition, a punching die (2) provided with a spiral convex portion (21a) on the outer surface.
1) is distributed and buried, and after the gutter main body (1) is dried, the punching die (21) is rotated to withdraw from the gutter main body, thereby forming the concave portion (6) and the spiral groove (1). 6a)
Forming at the same time. 3. Apparatus for use in the method of forming a recess of a joining means according to claim 2, wherein a formwork mounting member (23) fixed to an upper part of the formwork for forming the gutter body (1). And fixing means attached to the form-mounting member and detachably fixed by the fixing means at a position corresponding to the concave portion (6) formed on the upper surface (5) of the side wall of the side groove main body (1). And a punching die (21) having a convex portion (21a) for forming a spiral groove (6a) on the inner surface.