JPH083973A - Water retaining device for retaining wall - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Perform good water flow in a water flow device installed under a soil retaining wall that surrounds an artificial soil layer formed on concrete ground. In addition, the positioning of the water passage device during construction is facilitated. A strainer 12 is attached to an outer wall side open end 10a of the main cylinder 10, while an inner wall side open end 10 of the main cylinder 10 is attached.
A filter 15 was attached to b through a water-permeable support member 14 to form a water passage device 9, and the water passage device 9 was arranged at a lower position of the earth retaining wall 8. A support plate 16 is provided on the body of the main cylinder 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water retaining device for a retaining wall surrounding an artificial soil layer formed on a concrete ground.

[0002]

2. Description of the Related Art When planting on an artificial ground such as a concrete ground or a roof of a building, as shown in FIG.
A soil retaining wall c surrounds the artificial soil layer b laminated on the artificial soil a through a waterproof layer i and a holding concrete j in a desired shape, and the inner wall surface and the outer wall surface communicate with the lower portion of the soil retaining wall c. A water passage device d consisting of a vinyl chloride pipe is arranged to drain water.

[0003]

In such a water passage device d, the ground surface on the planting side is provided so as to be higher than the outside, and the water is drained from the planting side to outside the plant by the water passage device d. Contrary to the construction mode, the ground device on the planting side is placed at a low level, and rainwater around the planting is introduced into the plant by the water passage device d, and the drain device is arranged in the plant. Although there is a construction mode in which the planting side is set to a high position, there is a problem that the soil easily flows out from the water passage device d to the outside together with water, and the planting side In the case where the water passage device d is provided at a low position, there is a problem that dust such as fallen leaves flows into the water passage device d and the water passage device d is clogged.

The earth retaining wall c can be formed by assembling a mold on site and placing concrete on the mold, or by fixing a plurality of concrete blocks with mortar.

In order to arrange a conventional water passage device d consisting of a vinyl chloride pipe under the earth retaining wall c formed by using the former formwork, as shown in FIG.
Although the water passage device d is incorporated in the lower part of e, there is a problem that the water passage device d is easily moved by the flow pressure of the concrete h when the concrete h is poured, and the positioning cannot be performed easily.

On the other hand, in order to arrange the conventional water passage device d under the soil retaining wall c formed by using the latter concrete block, as shown in FIG. 12, it is disposed under the soil retaining wall c. A semicircular cutout groove g is formed in a concrete block f, and a water passage device d is inserted into the cutout groove g and the gap is filled with mortar and fixed. It is not easy to cut the notch groove g to be formed into a semicircular curved surface shape, and further, the retaining wall c
In the case of attaching the tiles to the outer wall surface of No. 3, the plurality of tiles must be attached by cutting out so as to form a circular shape in conformity with the cross-sectional shape of the water passing device d.

An object of the present invention is to provide a water retaining device for a retaining wall which can solve the above-mentioned conventional problems.

[0008]

The first means for solving the problems of the present invention is a main cylinder which is disposed at a lower position of the earth retaining wall and which connects the inner wall surface and the outer wall surface of the earth retaining wall. A strainer attached to the outer wall side opening end of the main cylinder, and a filter attached to the inner wall side opening end of the main cylinder via a water-permeable support member are provided. .

A second means for solving the problem is to connect the inner wall surface and the outer wall surface of the earth retaining wall formed by casting concrete on the formwork, and to arrange the lower part of the formwork. A main cylinder, a strainer attached to the outer wall side opening end of the main cylinder, a filter attached to the inner wall side opening end of the main cylinder via a water-permeable support member, and a body part of the main cylinder. And a support plate for fixing the main cylinder to the mold.

Further, a third means for solving the problem is
A main cylinder having a rectangular cross section which is inserted into a notch groove formed in a soil retaining wall made of a concrete block and is arranged at a lower position of the soil retaining wall, a strainer attached to an outer wall side open end of the main cylinder, and the main body. It is characterized in that a filter attached to the inner wall side opening end of the cylinder via a water-permeable support member is provided.

[0011]

In the first means, when the water is drained outside the planting, the soil is prevented from flowing out by the filter attached to the inner wall side opening end of the main cylinder. Further, when draining water into the planting, the strainer attached to the outer wall-side open end of the main cylinder prevents dust from flowing into the main cylinder, thus preventing clogging of the cylinder.

Further, in the second means, in addition to the effect of the first means, by fixing the support plate to the frame, the main cylinder can be easily positioned,
When pouring concrete, the water flow device does not move due to the flow pressure.

Further, according to the third means, in addition to the effect of the first means, the cutout groove formed by cutting out the concrete block can be formed into a rectangular shape, and a semicircular cutout groove can be formed. However, because it is not a curved surface, its molding process is easy, and even when a tile is attached to the outer wall surface of the earth retaining wall, the main cylinder has a rectangular cross section,
It can be attached in a straight line and can be easily installed.

[0014]

Embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows an example of planting work.
Here, 1 is a concrete ground made of slab concrete or the like that constitutes artificial ground such as a concrete pavement surface or a rooftop of a building, and a waterproof layer 2 is laid on the concrete ground 1, and a bottom bottom portion of the planting 3 is provided. Then, on the waterproof layer 2, a water retaining sheet 4, a water retaining mat 5 consisting of a concavo-convex portion having a continuous cross section, and a filter 6 are sequentially spread, and soil is stacked on the water retaining sheet 5 to form an artificial soil layer 7. Then, plants 28 are planted in the artificial soil layer 7. The recess in the water retention mat 5 serves as a water passage.

The artificial soil layer 7 is surrounded by a soil retaining wall 8, and the lower portion of the soil retaining wall 8 connects the inner wall surface 8a and the outer wall surface 8b of the water passage 9 according to the present invention.
Is arranged.

The water flow direction of the water flow device 9 differs depending on the height difference provided on the ground surface between the planting 3 and the outside, and as shown in FIG. Rainwater or the like is guided into the planting 3 by the water passage device 9 and is drained from a drain device (not shown) arranged at the bottom of the planting 3, and conversely, the ground surface y on the planting 3 side. If it is set to a high position, the water will be drained from the planting 3 side to outside the plant by the water passage device 9, but the water passage device 9 of the present invention can be applied to any of the construction modes.

The structure of the water passage device 9 will be described with reference to FIGS.

Reference numeral 10 is a main pipe of the water passage device 9 formed in the shape of a hollow pipe, and its cross-sectional shape is formed in a trapezoidal shape, a circular shape, etc. in addition to the rectangular shape shown in the drawing. The main cylinder 10
End 10a disposed on the outer wall side of the retaining wall 8 at one end of the
A strainer 12 having a plurality of water passage holes 11 arranged in a row is fixed to the column by bolts 13. Further, a water-permeable support member 14 made of wire netting, punching metal, or the like is fixed to the open end 10b arranged on the inner wall side of the soil retaining wall 8 at the other end of the main body cylinder 10, and the water-permeable support is also provided. A filter 15 is applied to the member 14 which allows only water to pass therethrough without passing soil. Further, a support plate 16 is attached to the body of the main cylinder 10 at a position slightly rearward of the outer wall side opening end 10a thereof. The support plate 16 is formed by fixing its base portion 16a to the outer peripheral surface of the main cylinder 10 by welding, screwing or the like, and projecting a peripheral edge portion 16b outward.
A plurality of through holes 17 are formed at predetermined positions of b.

Next, a method of constructing the water passage device 9 having the above construction will be described. The water-passing device 9 having this configuration is applied to the retaining wall 8 formed by placing concrete on a formwork, and as shown in FIG. 5, a holding concrete formed outside the planting 3. At the edge of 18, the formwork 19a, 19
Assemble with b facing each other at a predetermined interval.
The main cylinder 1 on the holding concrete 18 in the lower part of 9b
0 is placed and passed in the width direction to form the outer wall side of the formwork 19
The outer wall side open end 10a of the main cylinder 10 is projected outward from the insertion hole 20 formed in a, and the support plate 16 is brought into contact with the inner side surface of the mold frame 19a, and the nail 27 passed through the through hole 17 is formed. The support plate 16 is fixed to the frame 19a by the above method.

Then, concrete 21 is cast between the molds 19a and 19b, and after the concrete 21 is solidified, the molds 19a and 19b are removed to form the retaining wall 8 as shown in FIG. Strainer 1 on the outer wall
2. With the filter 15 positioned on the inner wall surface, the water passage device 9 is placed under the soil retaining wall 8. Then, the mortar 22 is applied to the outer wall surface and the upper surface of the soil retaining wall 8 so as to be flush with the end surface of the strainer 12, and if necessary, the decorative tile 23 is applied to the surface of the mortar 22.

On the other hand, after the soil retaining wall 8 is formed, the water retaining sheet 4, the water retaining mat 5, and the filter 6 are provided on the waterproof layer 2 on the concrete ground 1 surrounded by the soil retaining wall 8 as described above. Are sequentially laid, and the soil is stacked on the upper part to form the artificial soil layer 7. In addition, a water-permeable pipe material 24 is arranged at the lower peripheral edge of the artificial soil layer 7 between the inner wall surface of the soil retaining wall 8 to improve drainage.

In this structure, the support plate 16 provided on the body of the main cylinder 10 is fixed to the inner surface of the mold 19a by the nail 2
By fixing with 7 or the like, the water passage device 9 does not move when the concrete 21 is poured, and its positioning can be easily performed.

After the construction of the water-passing device 9, when the planting is carried out so that the planting side drains the water out of the planting due to the height difference between the ground surfaces x and y, the inner wall of the main cylinder 10 The outflow of soil from the artificial soil layer 7 can be prevented by the filter 15 provided at the side opening end 10b. Further, when the construction is performed so that the water is drained from outside the plant into the plant, the strainer 12 provided at the outer wall side open end 10a of the main cylinder 10
This prevents dust such as fallen leaves from flowing into the main cylinder 10 and prevents the main cylinder 10 from being clogged.

6 and 7 show a water passage device 9 having another structure. A main cylinder 10 'is formed in the shape of a hollow pipe having a rectangular cross section, and one end of the main cylinder 10' has a retaining wall. A plurality of water passage holes 11 are provided at the open end 10 ′ a disposed on the outer wall side of 8.
The strainers 12 arranged in rows are fixed by bolts 13. In addition, at the other end of the main cylinder 10 ', at the open end 10'b arranged on the inner wall side of the soil retaining wall 8, a water-permeable support member 14 made of wire mesh, punching metal or the like is fixed, and A filter 15 is attached on the water-permeable support member 14 to allow only water to pass therethrough without passing through soil.

As shown in FIG. 8, the water passage device 9 of this construction is applied to the earth retaining wall 8 composed of a plurality of concrete blocks 25, 25 ', and the construction method thereof will be described.

As shown in FIG. 9, a rectangular cutout groove 26 corresponding to the rectangular cross section of the main cylinder 10 'of the water-passing device 9 is provided at the lower edge of the concrete block 25' arranged at the lower part of the retaining wall 8. And the concrete block 25 'is formed.
As shown in FIG. 8, it is placed on the edge portion of the holding concrete 18 formed outside the planting 3 and fixed with mortar. At the same time, the outer wall side opening end 10'a is formed in the notch groove 26.
The main cylinder 10 'is inserted in a state of slightly protruding to the outside, and the gap is filled with mortar and fixed.

The earth retaining wall 8 is constructed by fixing another concrete block 25 to the upper part and the periphery of the concrete block 25 'with mortar, and the strainer 12 is located on the outer wall surface of the earth retaining wall 8 and the filter 15 is located on the inner wall surface thereof. The water flow device 9 is arranged below the soil retaining wall 8. Then, the mortar 22 is applied to the outer wall surface and the upper surface of the soil retaining wall 8 so as to be flush with the end surface of the strainer 12, and the decorative tile 23 is attached to the surface of the mortar 22 as needed.

In this structure, the cutout groove 26 provided at the lower edge of the concrete block 25 'is formed in the main cylinder 1
Since it can be formed into a rectangular shape composed of linear pieces corresponding to a rectangular cross section of 0 ', the forming process is easy. Further, when the decorative tiles 23 are attached to the outer wall surface of the soil retaining wall 8, since they can be attached linearly around the main cylinder 10 ′ having a rectangular cross section, the construction can be facilitated.

[0030]

As described above, according to the present invention, the strainer is attached to the outer wall side opening end of the main cylinder, while the filter is attached to the inner wall side opening end of the main body cylinder through the water permeable support member. The drainage device is arranged at a lower position of the soil retaining wall so that the inner wall surface and the outer wall surface are communicated with each other. If it is prevented and drains into the plant,
The strainer blocks the inflow of dust into the main cylinder and prevents the cylinder from clogging.

Further, while a strainer is attached to the outer wall side opening end of the main body cylinder, a filter is attached to the inner wall side opening end of the main body cylinder through a water-permeable support member, and further, the main body cylinder is attached to the body portion of the main body cylinder. Since a water-conducting device is configured by providing a support plate for fixing the to the mold for forming the retaining wall, the lower part of the retaining wall formed by placing concrete on the water-conducting device on the form. In this case, by fixing the support plate to the mold, it is possible to easily position the main cylinder, and it is possible to prevent the water flow device from moving due to the fluid pressure when pouring concrete.

Further, the cross section of the main cylinder is formed in a rectangular shape, and a strainer is attached to the outer wall side open end of the main cylinder while a filter is attached to the inner wall side open end of the main cylinder through a water-permeable support member. Since the water-passing device is configured, when the water-passing device is arranged below the soil retaining wall made of a concrete block, the notch groove formed by notching the concrete block can be formed into a rectangular shape. Unlike the semi-circular cutout groove, each piece can be formed in a straight line, so its molding process is easy, and even when a tile is attached to the outer wall surface of the earth retaining wall, the main cylinder is Since it has a rectangular cross section, it has an excellent effect that it can be adhered linearly and can be easily installed.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a construction example of a water passage device according to the present invention.

FIG. 2 is a front view of a water passage device.

FIG. 3 is a partially cutaway rear view of the water passage device.

FIG. 4 is a vertical sectional side view of the water passage device.

FIG. 5 is a vertical sectional side view showing a construction state of the water passage device.

FIG. 6 is a front view of a water passage device having another configuration.

FIG. 7 is a vertical cross-sectional side view of a water passage device having another configuration.

FIG. 8 is a vertical cross-sectional side view showing a construction example of a water passage device having another configuration.

FIG. 9 is a perspective view of a concrete block having a rectangular cutout groove formed therein.

FIG. 10 is a vertical sectional side view showing a construction example of a conventional water passage device.

FIG. 11 is a schematic vertical sectional side view showing a conventional construction state in which a mold is used.

FIG. 12 is a perspective view showing a conventional construction example in which a semicircular cutout groove is formed in a concrete block.

[Explanation of reference symbols] 8 retaining wall 9 water retaining device for retaining wall 10, 10 'main cylinder 10a, 10'a outer wall side open end 10b, 10'b inner wall side open end 12 strainer 14 water-permeable support member 15 filter 16 support Plate 19a Formwork 21 Concrete 25, 25 'Concrete block 26 Notch groove

Claims (3)

[Claims] 1. A main cylinder, which is arranged at a lower position of the earth retaining wall and connects the inner wall surface and the outer wall surface of the earth retaining wall, a strainer attached to an outer wall side open end of the main cylinder, and a main body cylinder of the main body cylinder. A water retaining device for a soil retaining wall, comprising a filter attached to the inner wall side open end via a water permeable support member. 2. A main cylinder arranged at a lower position of the mold, which connects an inner wall surface and an outer wall surface of a retaining wall formed by casting concrete on the mold frame, and an outer wall side of the main cylinder. A strainer attached to the open end, a filter attached to the inner wall side open end of the main body via a water-permeable support member, and a strainer attached to the body of the main body to attach the main body to the form frame. A water retaining device for a retaining wall, comprising: a supporting plate for fixing the retaining wall to the earth retaining wall. 3. A main cylinder having a rectangular cross section which is inserted into a notch groove formed in a retaining wall made of a concrete block and which is arranged at a lower position of the retaining wall, and is attached to an outer wall side open end of the main cylinder. A water retaining device for a retaining wall, comprising a strainer and a filter attached to the inner wall side opening end of the main cylinder via a water permeable support member.