JPH09256451A - Water permeable gutter block, water permeable gutter with earth retaining wall and construction method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect environment by allowing the construction of a water permeable gutter adjacent to an earth retaining wall, and expanding the construction range of the gutter even in the case of a topographic condition involving a step. SOLUTION: An earth retaining part 3, a beam part 4 and a side wall part 5 are integrated with one another, and a plurality of the beams 4 are projected from a position near the lower end of the earth retaining part 3 formed like an L-shape out of an earth retaining plate part 6 and a bottom plate part 7. Also, the side wall part 5 having a profile lower than the earth retaining plate part 6 is made to stand from the end of each beam part 4, and space between each beam part 4 is formed as an open part. As a result, environment can be protected, using even a gutter adjacent to a retaining wall as a water permeable gutter 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permeation side gutter block with a clasp which serves as both a cleat retaining wall block and a permeation gutter block, and a permeation gutter with a clasp using this block,
Also, it relates to a method of constructing a permeable gutter with soil retention.

[0002]

2. Description of the Related Art In recent years, it has been possible to prevent a decline in groundwater level and
Permeable gutters are recommended for the purpose of protecting the environment by allowing animals and plants to live close to the natural environment in the waterways.
However, conventionally, such a water-permeable side groove has not been provided adjacent to the earth retaining wall. This seems to be based on the preconception that the ground will be weakened by the water that has permeated from the gutter, which will adversely affect the soil bearing capacity of the retaining wall.

For example, Japanese Utility Model Laid-Open No. 147380/57 discloses a block which also serves as a soil retaining wall and a gutter, but this gutter is a normal gutter and not a water permeable gutter.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to protect the environment by expanding the construction range of the water-permeable gutter even in a topographical condition where there is a step, so that the gutter adjacent to the retaining wall is also a water-permeable gutter. It is a thing.

[0005]

According to the present invention, an earth retaining portion, a beam portion and a side wall portion are integrally formed, and the earth retaining plate portion and the bottom plate portion are L-shaped.
A plurality of beams are projected outward from the bottom of the soil retaining plate of the letter retaining part, and the side wall that is shorter than the soil retaining plate is erected at the tip of the beam. It is a water-permeable side gutter block with soil retention, which is characterized by having an opening.

Further, the water-permeable side gutter with soil retention, which is the above-mentioned water-permeable side gutter block with soil retention, that is, the earth retaining portion, the beam portion and the side wall portion are integrally molded, and the earth retaining plate portion and the bottom plate portion are formed in an L shape. A plurality of beams are projected outward from the bottom of the soil retaining plate of the soil retaining part, a side wall that is shorter than the soil retaining plate is erected at the tip of the beam, and crushed stones, etc. are placed in the opening between the beam and the beam. A water-permeable side groove with soil retention, characterized in that a water-permeable material is filled and a space between the soil retaining plate and the side wall is formed as a water-permeable side groove.

Furthermore, a method of constructing a permeable gutter with soil retention using the above-mentioned permeable gutter block with soil retention, that is, a step of applying earthwork to the construction part, and integrally forming an earth retention part, a beam part and a side wall part on the earthwork. A plurality of beams are projected outward from the vicinity of the lower end of the earth retaining plate portion of the earth retaining plate formed in the L shape by the earth retaining plate portion and the bottom plate portion, and the side wall portion which is shorter than the earth retaining plate portion at the tip thereof. And installing a permeable gutter block with soil retention with openings between the beams, filling the opening with a permeable material such as crushed stone, and backfilling the area around the permeable gutter block with soil retention. It is a method of constructing a permeate gutter with soil retention, characterized by including a step.

According to the present invention, the water-permeable side gutter with soil retention can be easily constructed by successively installing the blocks having the above construction on the prefabricated groundwork. In this block, since the bottom plate and the beam are integrated with the soil retaining plate, the bottom plate, the beam, and the sliding portion against the overturning moment and sliding force generated from the earth pressure on the back surface acting on the soil retaining wall. Even if water penetrates into the ground through the water-permeable side groove, the soil retaining wall can maintain a stable state even if the tip side wall portion effectively resists.

Since the opening is filled with a water-permeable material such as crushed stone, water in the gutter penetrates into the ground from this portion. Microorganisms live on the surface of the water permeable material, and the microorganisms decompose pollutants, so that the water in the gutter is purified, and insects and fish can also inhabit. When the water in the gutter is low, the roots of the plants extend into the gaps between the permeable materials, and these plants also purify the water quality and preserve the environment.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be described in detail below with reference to the drawings showing the embodiments. FIG. 1 is a cross-sectional view of a water permeable side gutter 1 with soil retention of the embodiment, and FIG. 2 is a top view of a water permeable side gutter block 2 with soil retention of the embodiment.

The water retaining gutter block 2 with earth retaining member is formed by integrally forming the earth retaining member 3, the beam portion 4 and the side wall portion 5 with concrete. The soil retaining portion 3 is formed in an L shape by the soil retaining plate portion 6 and the bottom plate portion 7. Three beam portions 4 project outward from the lower end of the soil retaining plate portion 6, and the tip of the soil retaining plate portion 6 Also, the short side wall portion 5 stands up. There are two openings 11 between the three beam portions 4. Reference numerals 9 and 10 in the drawing are notches,
The purpose is to save concrete material and reduce the block weight.

Next, a method of constructing the water permeable gutter block 1 with soil retention will be described. First of all, perform appropriate land works such as excavation, leveling, split ground work, and waste concrete ground work at the location where the permeable gutter block with soil retaining is installed. However, it is necessary to perform water-permeable groundwork in the portion of the opening 11. Next, the permeable gutter block 2 with earth retention is installed on this earthwork, and a large number of these blocks are connected and installed. The blocks are connected to each other using a suitable connecting device. In addition, a sealing material can be provided between the blocks as needed. After installing the block, the opening 11 is filled with crushed stone, gravel, sand or the like as the water permeable material 8. The beam portion 4 may be completely covered by being filled with a large amount of water-permeable material. After installing the blocks, both sides of the retaining plate portion 6 and the gutter portion 5 are backfilled. This backfilling step may be performed before or after the step of filling the water-permeable material.

As shown in FIG. 1, an overturning moment (arrow A) and a sliding force (arrow B) act on the water retaining gutter 1 with earth retention by the earth pressure on the back surface of the earth retaining plate portion 6. The weight of earth and sand above the bottom plate portion 7 and the passive earth pressure below the beam portion 4 and the side wall portion 5 resist the falling moment. The sliding force is resisted by the frictional force of the bottom plate portion 7, the beam portion 4, and the side wall portion 5 against the earthwork, and the passive earth pressure on the back surface of the side plate portion 5. And the water permeable gutter 1 with soil retention can maintain a stable state.

[0014]

According to the present invention, the gutter adjacent to the retaining wall can be made a water permeable gutter, and the construction range of the water permeable gutter can be widened to realize environmental protection even in a topographical condition with a step. In the present invention, the water-permeable side-ditch with soil retention can be easily constructed by continuously installing the water-permeable side-ditch block with soil retention on the previously constructed earthwork. In this block, since the bottom plate and the beam are integrated with the soil retaining plate, the bottom plate, the beam, and the sliding portion against the overturning moment and sliding force generated from the earth pressure on the back surface acting on the soil retaining wall. Even if water penetrates into the ground through the water-permeable gutter, the side wall of the tip effectively keeps the soil retaining wall in a stable state. Since the opening is filled with the water-permeable material, the water in the gutter penetrates into the ground from this portion. Microbes inhabit the surface of the permeable material,
Since the microorganisms decompose pollutants, the water in the gutter is purified, and insects and fish can also inhabit. When the amount of water in the gutter is low, the roots of the plants extend into the gaps between the permeable materials, and these plants also purify the water quality and preserve the environment.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a water permeable gutter 1 with soil retention of an example.

FIG. 2 is a top view of a water permeable side gutter block 2 with soil retention according to an embodiment.

[Explanation of symbols]

 1 Permeable gutter with soil retention 2 Permeable gutter with soil retention block 3 Soil retaining part 4 Beam part 5 Side wall part 6 Soil retaining plate part 7 Bottom plate part 8 Water permeable material 9 Cutout part 10 Cutout part 11 Opening part

Claims (3)

[Claims] 1. The earth retaining portion 3, the beam portion 4 and the side wall portion 5 are integrally formed, and the earth retaining plate portion 6 and the bottom plate portion 7 are formed in an L-shape from the vicinity of the lower end of the earth retaining plate portion 6. A plurality of beam portions 4 are projected outward, a side wall portion 5 which is shorter than the soil retaining plate portion 6 is erected at the tip thereof, and an opening 11 is provided between the beam portions 4 and 4. Permeable gutter block 2 with soil retaining 2. The earth retaining portion 3, the beam portion 4 and the side wall portion 5 are integrally formed, and the earth retaining plate portion 6 and the bottom plate portion 7 are formed in an L-shape from the vicinity of the lower end of the earth retaining plate portion 6 of the earth retaining portion 3. A plurality of beam portions 4 are projected outward, a side wall portion 5 which is shorter than the earth retaining plate portion 6 is erected at the tip thereof, and a water-permeable material such as crushed stone is provided in an opening 11 between the beam portions 4 and 4. 8 is filled with water, and a space between the earth retaining plate 6 and the side wall 5 is formed as a water permeable side groove. 3. A step of applying earthwork to a construction portion, and an earth retaining portion 3, a beam portion 4 and a side wall portion 5 are integrally formed on the earthwork,
A plurality of beam portions 4 are projected outward from the vicinity of the lower end of the soil retaining plate portion 6 of the soil retaining portion 3 formed in an L shape by the soil retaining plate portion 6 and the bottom plate portion 7,
A step of erecting a side wall portion 5 which is shorter than the soil retaining plate portion 6 at its tip, and installing a water retaining gutter block 2 with an earth retaining portion having an opening 11 between the beam portions 4 and the opening portion 11. A method for constructing a permeable gutter with soil retention, characterized by including a step of filling a permeable material 8 such as crushed stone into the