JPH0540340U - Mounting structure of permeable mat on retaining wall - Google Patents

Abstract

(57) [Summary] [Purpose] The work of attaching a water-permeable mat to a retaining wall can be performed quickly and reliably without requiring skill, and correction work can be performed easily. [Structure] After the retaining wall (3) is constructed, or while the retaining wall (3) is being constructed, one joining piece (9) of the surface fastener (6) is provided on the back surface of the retaining wall (3).
Is fixed, and then the water-permeable mat (A) formed by using the other joining piece (12) of the surface fastener (6) as a surface material is pressed against the joining surface (9a) of the one joining piece (12). Only then, the water-permeable mat (A) can be attached to the retaining wall (3) quickly and securely.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for attaching a water-permeable mat to a retaining wall.

[0002]

[Prior art]

 Conventionally, when building a retaining wall in construction or civil engineering, it has been obligatory to form a permeable layer on the back side of the retaining wall with gravel or crushed stone so that the back side of the retaining wall can be effectively drained. Has been.

However, in recent years, it has become difficult to obtain a large amount of gravel and crushed stone due to depletion of high-quality stone materials and soaring transportation costs. Therefore, instead of gravel or crushed stone, research has been conducted to use an artificial water-permeable mat made of synthetic resin material, non-woven fabric, or other material as the water-permeable layer on the back surface of the retaining wall. It is in a situation where it is permitted.

[0004]

[Problems to be solved by the device]

 However, sufficient research has not yet been conducted on the specific means of attaching the above-mentioned water-permeable mat to the back surface of the retaining wall, and it has only been considered that it is simply nailed or bonded with an adhesive. The current situation is that there are none.

In view of the above points, the present invention can quickly and surely perform the work of attaching the water-permeable mat to the retaining wall without requiring skill, and can easily perform the correction work. The purpose of the present invention is to provide a mounting structure for a water-permeable mat to a retaining wall that is capable of doing so.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the present invention, one joining piece in a surface fastener is designed to be joined by bringing the joining surfaces of a pair of water-permeable joining pieces into contact with each other. Are bonded to the back surface of the retaining wall so that they face outward, and the other joining piece of the hook-and-loop fastener is used as the surface material of at least one surface of the water permeable mat, with the joining surface facing outward, and joined in the water permeable mat The feature is that the water-permeable mat can be attached to the retaining wall by contacting the piece with the joint surface of the joint piece fixed to the retaining wall.

[0007]

[Action]

 After construction of the retaining wall or during construction of the retaining wall, one joining piece of hook and loop fastener is fixed to the back surface of the retaining wall, and then the other joining piece of hook and loop fastener is formed as the surface material. The water-permeable mat can be attached to the retaining wall quickly and reliably by simply pressing the above to the joint surface of the one joint piece.

[0008]

【Example】

 1 to 3 show a first embodiment of the present invention. As shown in FIG. 2, a concrete structure is installed upright on the boundary between the high ground (1) and the low ground (2) of the cliff land. A water-permeable mat (A) is attached to the back surface of the retaining wall (3). (4) is a drainage hole, and (5) is a drainage ditch.

In FIGS. 1 and 3, (6) is a known surface fastener, and in this embodiment, a large number of mushroom-shaped (or J-shaped) synthetic resins are provided on one surface of a water-permeable cloth material (7). A joining piece (9) in which a wire rod (8) is implanted, and a joining piece (12) in which a continuous loop-shaped synthetic resin wire rod (11) is attached to one surface of a water-permeable cloth material (10). It consists of

One of the joining pieces (9) has a joining surface (9a) on the back surface of the retaining wall (3), which is the side having the wire (8) after or during the construction of the retaining wall (3). ) As the outside, they are adhered by a known adhesive or an adhesive material (not shown) such as butylgol, or fixed by nailing or other fixing means.

In addition, when pouring concrete for forming the retaining wall (3), the joining piece (9) is attached to the inner surface of the concrete formwork (not shown) so that the joining surface (9a) is in contact with the formwork. It may be temporarily fixed so that the joint surface (9a) of the joint piece (9) appears on the back surface of the concrete retaining wall (3) when the concrete is hardened and released from the mold. In this case, the cloth material (7) of the joint piece (9) is fixed with a material that is highly compatible with concrete, or the cloth material (7) is formed with protrusions embedded in the concrete. Or, it is preferable to stab a nail or the like.

The water-permeable mat (A) uses the joining piece (12) of the above-mentioned surface fastener (6) as a surface material with its joining surface (12a) facing outward. The water-permeable mat (A) may have any constitution other than at least one surface material, but in this embodiment, a large number of convex short cylinder-shaped convex portions (13) and a short cylinder with a bottom are provided on both front and back surfaces. The concave-convex sheet (15) made of a synthetic resin material, in which a large number of concave portions (14) are arranged alternately in both vertical and horizontal directions, is used as the base material, and the bonding piece (12) is attached as a surface material on one side It is as worn. (15a) is a water passage hole formed in the top surface (or the bottom surface of the concave portion (14)) of the appropriate convex portion (13) of the uneven sheet (15).

However, as shown in FIG. 4, the water-permeable mat (A) may be obtained by attaching the joining pieces (12) as surface materials to both the front and back surfaces of the uneven sheet (15) which is a base material. As shown in Fig. 5, a plurality of mesh plates (16) are used as a base material, and the periphery thereof is covered with a bonding piece (12) so that the bonding surface (12a) faces outward. In addition, the appropriate places thereof may be fixed with pins (17) or wires, or the base material may be a corrugated sheet or a non-woven fabric made of synthetic resin, although not shown.

The joint surface (2) of the water-permeable mat (A) thus formed is fixed to the rear surface of the retaining wall (3) in advance as described above. ), The wire rods (8) and (11) of the contact surfaces (9a) and (12a) are meshed with each other, and the water permeable mat (A) is quickly and surely attached to the retaining wall (3).

When the mounting position of the water permeable mat (A) is wrong or it is desired to correct it, the water permeable mat (A) can be peeled off from the retaining wall (3) with a little strong force, and a regular It can also be easily reattached to the position.

After mounting the water-permeable mat (A) on the retaining wall (3), if the soil on the high ground (1) side is backfilled, the retaining wall construction is completed, and the back surface of the retaining wall (3) and the high ground ( Water channels (not shown) are formed in the vertical, horizontal, and front-back directions between the soil on the 1) side, especially between the convex portions of the surface of the uneven sheet (15) on the retaining wall (3) side. The underground water that has passed through is drained from the drain hole (4).

[0017]

[Effect of the device]

 According to the present invention, the following effects can be achieved. (a) The permeable mat can be attached to the retaining wall quickly and accurately without requiring any skill by simply pressing the permeable mat against one joint piece of the hook-and-loop fastener that has been fixed in advance on the back surface of the retaining wall. be able to. (b) If the permeable mat is installed in the wrong position, the permeable mat can be peeled off with a little strong force, repositioned, and easily installed again. That is, the repair work is easy. (c) Since both the joining pieces can allow a slight deviation in the direction along the joining surface in the state where they are joined to each other, the stress applied to the local part of the water-permeable mat can be dispersed, and a large peel strength can be obtained as a whole. You can In other words, there is little risk of peeling from the local area.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an embodiment of the present invention.

FIG. 2 is a schematic vertical sectional side view showing a situation of a retaining wall and its surroundings.

3 is a sectional view taken along line XX in FIG.

FIG. 4 is a vertical sectional side view showing a modified example of the water-permeable mat.

FIG. 5 is a vertical sectional side view showing another modified example of the water-permeable mat.

[Explanation of symbols]

(A) Water-permeable mat (1) High ground (2) Low ground (3) Retaining wall (4) Drainage hole (5) Drainage groove (6) Face fastener (7) Fabric material (8) Wire material (9) Joint piece ( 9a) Joining surface (10) Cloth material (11) Wire material (12) Joining piece (12a) Joining surface (13) Convex part (14) Recessed part (15) Concavo-convex sheet (15a) Water passage hole (16) Net plate (17) )pin

Claims (1)

[Scope of utility model registration request] 1. A retaining wall for one joining piece of a hook-and-loop fastener, wherein the joining surfaces of a pair of water-permeable joining pieces are brought into contact with each other so that the joining surfaces face outward. , And the other joining piece in the hook and loop fastener, with the joining surface facing outward, as a surface material on at least one side of the water-permeable mat,
A structure for mounting a water-permeable mat to a retaining wall, characterized in that the water-permeable mat is attached to the retaining wall by bringing the connecting piece of the water-permeable mat into contact with the joint surface of the joint piece fixed to the retaining wall.