JPH06101243A - Draining method for retaining wall - Google Patents

Abstract

PURPOSE:To make installation of a water-collecting plate to be executed simply and efficiently, and to make collection and draining of water to be made sufficiently by a method wherein rainwater or the like penetrating into soil behind a retaining wall made of concrete or blocks is collected with a synthetic resin water-collecting plate. CONSTITUTION:A riser wall part 1b of a retaining wall 1 is equipped with a weep hole 2 that is positioned in the middle of its lengthwise direction. A synthetic resin water-collecting plate 3 is placed approximately in horizontal, extending over the rear side of the riser wall part 1b of the retaining wall 1 so that the front end thereof can be positioned to the level the same as or slightly lower than the lower end of the weep hole 2. The water-collecting plate 3 is laid, gradually inclining downward toward the weep hole 2. In the case where the water-collecting plate 3 is made up approximately in L-shape section, a perpendicular part 3b on the front end of the water-collecting plate 3 is fixed to the rear side of the riser wall part 1b of the retaining wall 1, and a hole 4 or a notch for water passage corresponding to the weep hole 2 is provided to the perpendicular part 3b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for draining water from earth retaining walls such as concrete retaining walls and block retaining walls.

[0002]

2. Description of the Related Art Generally, an earth retaining wall is composed of a horizontal base part buried in the soil and a rising wall part which is continuous to the front end of the horizontal base part in a rising shape and has one surface exposed to the outside. Drainage holes were provided in the retaining wall, especially on the rising wall.

[0003] Conventionally, the increase of accumulated water such as rainwater gathering behind the earth retaining wall and the collapse of the retaining wall caused by the increase of soil pressure due to the increase are prevented, and the soil is kept in a good condition. In order to maintain it, a method of inserting a pipe or installing a perforated pipe on the back surface of the retaining wall using a gravel material such as gravel or stone, or a drainage hole was adopted.

[0004]

However, among the above-mentioned conventional methods, the method of using the gravel material has a problem that it requires a lot of manpower and the work efficiency is poor. In addition, the methods that use pipes and perforated pipes all have a small area in contact with the soil, and the accumulated water contained in the soil on the back surface of the retaining wall cannot be sufficiently guided to the drain hole of the retaining wall and discharged. was there.

The object of the present invention is to solve the above-mentioned problems of the prior art, and to sufficiently collect and drain rainwater and the like that have penetrated into the soil behind soil retaining walls such as concrete retaining walls and block retaining walls. Another object of the present invention is to provide a method of draining water in a retaining wall for retaining soil, which is capable of laying a water collecting plate and can be efficiently carried out.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a horizontal base portion buried in soil and a front end of the horizontal base portion, one surface of which is exposed to the outside and an intermediate height. In an earth retaining wall consisting of a rising wall with a drainage hole in its part, a synthetic resin water collecting plate is placed on the entire backside of the rising wall, and its tip is located at the lower end of the drainage hole or slightly below it. The gist is a method of draining water in the earth retaining wall, which is characterized in that it is laid in a substantially horizontal direction so as to be positioned.

In the above description, the water collecting plate is made of a synthetic resin such as polyvinyl chloride resin or polyethylene resin, and its thickness is not particularly limited, but in view of workability, it is preferably 1 to 2 mm.

The water collecting plate made of synthetic resin, which is laid on the entire rear side of the rising wall of the earth retaining wall, is preferably inclined so as to gradually descend toward the drainage hole. It is preferable to provide a water collecting groove extending toward the drain hole.

The water collecting plate may have a substantially L-shaped cross section. In this case, the vertical portion of the front end of the substantially L-shaped water collecting plate is fixed to the back surface of the rising wall portion of the earth retaining wall with a double-sided tape, adhesive, nailing, or the like, and at the same time, to the vertical portion.
It is preferable that a water passage hole or a water passage cutout is provided so as to correspond to the water drainage hole of the rising wall portion, and the horizontal portion of the substantially L-shaped water collecting plate is inclined so as to gradually descend toward the water drainage hole.

[0010]

[Operation] According to the method of draining water from the earth retaining wall,
Since a water collecting plate made of synthetic resin is laid on the entire back side of the rising wall of the earth retaining wall, rainwater that has penetrated into the soil behind the earth retaining wall such as concrete retaining wall and block retaining wall
Can sufficiently collect and drain water. Also, the water collecting plate made of synthetic resin can be laid in a substantially horizontal direction on the entire back side of the rising wall so that the tip of the water collecting plate is located at the lower end of the water draining hole or slightly below this, Is simple and can be implemented efficiently.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the method for draining water from the earth retaining wall of the present invention will be described with reference to the drawings.

Example 1 In FIG. 1, an earth retaining wall (1) composed of a concrete retaining wall or a block retaining wall is provided at a stepped boundary portion of a site (G) of a house (H), for example, a road (R). is set up. The earth retaining wall (1) consists of a horizontal base (1a) buried in the soil and a horizontal base (1
It consists of a rising wall (1b) that is continuous to the front end of a) and has one surface exposed to the outside, and a drainage hole (2) is provided in the middle of the height of the rising wall (1b). .

The method of draining water according to the present invention is applied to the earth retaining wall.
A water collecting plate (3) made of polyvinyl chloride resin and having a substantially L-shaped cross section is laid on the entire rear side of the rising wall (1b) of (1). And the vertical part (3b) at the front end of the L-shaped water collecting plate (3)
Is fixed to the back surface of the rising wall portion (1b) of the earth retaining wall (1) with, for example, a double-sided tape (7). Also, the vertical wall (1b) and the double-sided tape (7), the rising wall (1b) of the earth retaining wall (1).
Provide a water passage hole (4) with a pair of scissors, a cutter knife, etc. at a position corresponding to the water drainage hole (2). Further, the horizontal part (3a) of the water collecting plate (3) is inclined so as to gradually lower toward the drain hole (2) and the water passage hole (4).

In this embodiment, the L-shaped water collecting plate is used.
On the back side of the corner of (3), a filter made of a bundle of synthetic resin fibers (trade name: Sunroid Matt, manufactured by Tsutsunaka Plastic Industry Co., Ltd.) to separate soil and water.
(8) was placed.

According to the above draining method, the rising wall portion of the earth retaining wall (1) such as a concrete retaining wall or a block retaining wall.
Since a synthetic resin water collecting plate (3) is laid on the entire back side of (1b), it is necessary to sufficiently collect and drain rainwater that has penetrated into the soil behind the earth retaining wall (1). You can The water collecting plate (3) is made of a synthetic resin such as polyvinyl chloride resin and is lightweight, so it is easy to handle during construction and
The water collecting plate (3) may be laid on the entire rear side of the rising wall (1b) in a substantially horizontal direction so that its tip is located at the lower end of the drainage hole (2). is there.

Further, in this embodiment, since the water collecting plate (3) is inclined so as to gradually descend toward the water drain hole (2),
Water collection efficiency is improved.

Second Embodiment FIG. 2 shows a second embodiment of the present invention. Here, the point different from the case of the first embodiment is that the horizontal portion (1a) of the water collecting plate (3) made of synthetic resin is alternately arranged with the peaks (9) and the valleys (10). In addition, it has a waveform that is gentle from the back side, and that the valley (10) is located at the lower end of the drainage hole (2) or slightly below it.

According to such a second embodiment, the water collecting plate
The trough (10) of the horizontal part (1a), which is formed into the corrugated shape of (3), is a drain hole.
Since it matches the level of (2), it has penetrated into the soil behind the earth retaining wall (1) due to the slope effect of the slope part (11) from the mountain part (9) to the valley part (10). Rainwater can be collected efficiently and can be drained from the drain hole (2).

Third Embodiment FIG. 3 shows a third embodiment of the present invention. Here, the difference from the case of the first embodiment is that it corresponds to the vertical portion (3b) of the water collecting plate (3) made of synthetic resin and the drain hole (2) of the rising wall portion (1b). There is a cutout (5) for water passage on the side, and a cutout for water passage on the horizontal part (1a) of the water collecting plate (3).
Toward (5) and then to the rising wall (1b) drain hole (2)
The point is that there is a water collecting groove (6) extending toward.

According to such a third embodiment, the water collecting plate
Due to the water collecting effect of the water collecting groove (6) provided in the horizontal part (1a) of (3), rainwater that has penetrated into the soil can be collected efficiently behind the earth retaining wall (1). And it can be drained.

Since the other points of the second and third embodiments are the same as those of the first embodiment, the same parts are designated by the same reference numerals in the drawings.

In the above embodiment, the water collecting plate (3)
Although a polyvinyl chloride resin is used as the material, the water collecting plate (3) may be made of other synthetic resin such as polyethylene resin.

The water collecting plate (3) made of synthetic resin is fixed on the rear surface of the earth retaining wall (1) by any fixing means.
It may be fixed.

[0024]

As described above, the method for draining water from the earth retaining wall according to the present invention includes the horizontal base portion buried in the soil,
In an earth retaining wall consisting of a rising wall that is connected to the front end of the horizontal base and has one surface exposed to the outside and a drainage hole in the middle of the height, a synthetic resin collection is used on the entire backside of the rising wall. The water plate is laid in a substantially horizontal direction such that the tip of the water plate is located at the lower end of the water drainage hole or slightly below this. According to the water drainage method of the present invention, a concrete retaining wall, a block retaining wall, etc. Rainwater that has penetrated into the soil behind the earth retaining wall can be collected and drained sufficiently. As a result, it is possible to prevent an increase in accumulated water such as rainwater gathering behind the earth retaining wall, and to prevent the retaining wall from collapsing as a result of an increase in soil pressure, thereby maintaining the soil in a good condition.

Further, the water collecting plate made of synthetic resin may be laid in a substantially horizontal direction on the entire rear side of the rising wall so that the tip thereof is located at the lower end of the water draining hole or slightly lower than this. Therefore, there is an effect that the laying work is simple and can be efficiently performed.

By tilting the water collecting plate so that it gradually descends toward the drainage hole, rainwater and the like can be collected efficiently, and the water collecting plate made of synthetic resin has a substantially horizontal cross section. The water collecting effect is further enhanced by providing the water collecting hole which is L-shaped and extends in the horizontal portion toward the water drain hole (2).

Further, the horizontal part of the water collecting plate is formed into a corrugated shape when viewed from the back, and the valley part of the horizontal part is made to coincide with the level of the drain hole, whereby the slope of the slope part from the peak part to the valley part is inclined. Due to the effect, rainwater and the like that have penetrated into the soil can be efficiently collected and drained.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a method for draining water from a soil retaining wall according to a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing a method of draining water in the earth retaining wall of the second embodiment of the present invention.

FIG. 3 is a schematic perspective view of a water collecting plate used in the water draining method according to the third embodiment of the present invention.

[Explanation of symbols]

 1 Earth retaining wall 1a Horizontal base 1b Standing wall 2 Drainage hole 3 Water collecting plate made of synthetic resin 4 Water passage hole 5 Notch 6 Recessed groove for water collection

Claims (4)

[Claims] 1. A stand having a horizontal base (1a) buried in soil, a continuous base connected to the front end of the horizontal base (1a) and one side exposed to the outside, and a drainage hole (2) in the middle of the height. In the earth retaining wall (1) consisting of the wall (1b), a synthetic resin water collecting plate (3) is placed over the entire backside of the rising wall (1b), and its tip is the lower end of the drainage hole (2). Alternatively, it is characterized by being laid out in a substantially horizontal direction so that it is located slightly lower than this.
Draining method on earth retaining wall. 2. The water collecting plate (3) made of synthetic resin is provided with a water drain hole.
Claim 1 which inclines so that it may descend gradually toward (2).
Draining method on the earth retaining wall described. 3. The water collecting plate (3) made of synthetic resin has a substantially L-shaped cross section, and the vertical portion (3b) at the front end of the substantially L-shaped water collecting plate (3) rises on the earth retaining wall (1). It is fixed to the back of the wall (1b), and the vertical wall (3b) has a water drainage hole (2) in the rising wall (1b).
Water holes (4) or water notches (5)
Is provided, and the horizontal part (3a) of the approximately L-shaped water collecting plate (3) is drained.
Claim 1 which inclines so that it may descend gradually toward (2).
Draining method on the earth retaining wall described. 4. A drainage hole in the water collecting plate (3) made of synthetic resin.
A groove (6) for collecting water, which extends toward (2), is provided.
Draining method on the earth retaining wall described.