JP3368495B2 - Concrete block for empty retaining wall and masonry method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block for use as an empty set retaining wall in which the concrete blocks are laid up in an inverted manner for each stage and stacked, and a masonry of the empty set retaining wall using this concrete block. It is related to the construction method.

[0002]

2. Description of the Related Art Conventional concrete blocks of this type are known to be piled up in a grid pattern.

[0003]

In the above-mentioned conventional concrete block, since the horizontal girder members and the vertical girder members are alternately piled up in the shape of a double girder, at least two kinds of members are required. It couldn't be the smallest one.

The present invention has been made in view of the above points, and can be assembled with one type of concrete block,
Another object of the present invention is to provide a concrete block for a retaining wall that is empty so that a retaining wall that is very close to a natural environment can be constructed, and a masonry method therefor.

[0005]

In order to achieve the above object, the concrete block for an empty set retaining wall according to claim 1 has a horizontally long rectangular front shape and a plurality of upper side edges at a plurality of positions in the longitudinal direction. It is composed of a front plate having a groove and a plurality of legs projecting on the back surface of the front plate and at the position where the groove is provided, and the width of the tip of the leg is fitted into the groove. Along with the width, make the height of this part higher than the depth of the groove,
Further, a contact step is provided at the tip of the upper side of the leg.

Further, the concrete block for an empty retaining wall according to claim 2 has a front shape which is a horizontally long rectangle, and a front plate having concave grooves at a plurality of longitudinal positions of the upper side, and this front plate. And a plurality of legs projecting at the position where the groove is provided, the width of the tip of the leg is set to a width that fits in the groove, and the lower side is the lower side of the front plate. A shape in which the height h ₂ from the lower side of the front plate is lower than the height H of the front plate and the relationship of 2h ₂ > H is satisfied, and a contact step is provided at the tip of the upper side while matching. It has a structure that

In the concrete block for an empty set retaining wall according to claim 1 or 2, a bolt screw hole member is embedded in the tip of each leg by an insert.

Further, in the masonry construction method of the empty set retaining wall according to claim 4, the concrete blocks for the empty set retaining wall are turned upside down step by step, and the front plate of the upper concrete block is set to the lower side. Abutting on the stepped part of the leg of the concrete block, fitting the tip of the leg into the concave groove and stacking sequentially.
Chestnut stones and concrete debris are packed in a space surrounded by each of the piled up concrete blocks to be assembled.

Further, in the masonry construction method of an empty retaining wall according to claim 4, the thinning material is arranged at each tip of the legs of the concrete block projecting to the front side of the retaining wall so as to be arranged across adjacent legs. Logs are attached with bolts.

[0010]

[Work] Concrete block for each empty set retaining wall is 1
The stacks are stacked in a front-rear direction on each stage. And at this time,
The front plate of the upper concrete block is brought into contact with the abutting step of the leg of the lower concrete block, and the tip end of the leg is fitted in the groove. As a result, the tips of the legs of the other concrete blocks are projected between the front plates of the concrete blocks that are alternately stacked. Logs such as thinned wood are attached to the tips of the protruding legs with bolts.

At this time, in the concrete block according to claim 1, since the height of the leg of the portion fitted into the groove is higher than the depth of the groove, the leg is fitted into the groove and the bottom surface of the leg is fitted. In the state of being in contact with the front plate, the upper side of the front plate projects by the difference S ₁ between the height of the leg and the depth of the groove. Therefore, a gap of the above difference S ₁ is provided between the front plates of the alternate concrete blocks that are stacked with the legs separated from each other.

In the concrete block according to the second aspect of the invention, the legs of the concrete blocks to be assembled in the front-rear direction are piled up so that their legs overlap each other. Since the sum of the heights of the legs of the two concrete blocks to be mounted in the front-rear direction, h ₂ + h ₂ is higher than the height H of one front plate, the legs fitted in the recessed groove have a difference S Only ₁ projects from the top edge of the front plate. Therefore, a gap of the above difference S ₁ is provided between the front plates of the alternate concrete blocks that are stacked with the legs separated from each other.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. In the figure, 1 is a concrete block for an empty retaining wall, and this concrete block 1 is a front plate 2
And two legs 3, 3 protruding from the back surface of the front plate 2.

The front shape of the front plate 2 is a horizontally long rectangle having a length L and a height H. The upper edge of the front plate 2 is provided with concave grooves 4 and 4 at two positions in the longitudinal direction. is there. The installation positions of the bi-concave grooves 4 and 4 are L ₁ ≦ 1 / 4L from each side end when the total length of the front plate 2 is L. The legs 3 and 3 are also provided at the same positions as the grooves 4 and 4. The height dimension from the lower side of the front plate 2 to the bottom surface of the groove 4 is h ₁ .

The leg 3 projects from the front surface of the front plate 2 over a length of a, and its planar shape is formed into a substantially taper shape in which the front end side is gradually narrowed, and the width of the front end of the leg 3 is that of the front plate 2. The width is such that it engages with the groove 4. A bolt screw hole member 5 is embedded in the tip of each leg 3 by an insert.

The side shape of the leg 3 is such that the lower side of the leg 3 coincides with the lower side of the front plate, and the height is h ₂ from the lower side of the front plate 2. The lower side of the leg 3 is formed horizontally from the front surface of the front plate 2 over the dimension of b, and becomes a notched step portion 6 from the tip thereof by a notch dimension h _{3 in a} stepwise manner. The upper side of the front plate 2 is formed horizontally from the front surface of the front plate 2 to the dimension c, and a stepped raised step portion 7 is formed at the tip thereof. The inner length of the horizontal part of the upper side of the leg 3 is d.

In each of the above dimensions, the height dimension h ₁ to the bottom surface of the concave groove 4 is the same as or slightly the same as the sum of the height h ₂ of the leg 3 and the notch dimension h ₃ of the notch step portion 6. The size is very small (h ₁ ≦ h ₂ + h ₃ ). The dimension b of the leg 3 to the cutout step 6 on the lower side is smaller than the inner dimension d of the horizontal portion on the upper side (b <d). The height H of the front plate 2 is smaller than twice the height h ₂ of the legs 3.

The concrete blocks 1 having the above-described structure are stacked one by one in reverse, that is, in a reversible manner. FIG. 5 and FIG. 6 show how the concrete blocks 1 in each stage are stacked, and the concrete blocks 1 in the second stage are turned upside down on the first stage in which a plurality of concrete blocks 1 are arranged side by side. The tip portion of the notched step portion 6 of the leg 3 is engaged with the groove 4 of the first-stage concrete block 1. At this time, as shown in FIG. 6, the concrete block 1 on the upper side abuts the front lower end portion of the front plate 2 on the abutting step portion 7 on the upper side of the leg 2 of the lower concrete block 1, The tip of the concrete block 1 is engaged with the groove 4 to project forward from the front plate 2 of the lower concrete block 1 and stacked. At this time, the upper and lower concrete blocks 1,
The legs 3 and 3 of 1 are brought into contact with each other vertically and stacked.

Further, since the heights (h ₂ + h ₂ ) of the legs 3 of the two concrete blocks 1 stacked in the front-rear direction are larger than the height H of the front plate 2 of one concrete block 1, The leg 3 fitted into the concave groove 4 of the face plate 2 is projected upward by the difference S ₁ between H and h ₂ + h ₂ . Therefore, by stacking the front plates 2 of the other concrete blocks 1 on the legs 3, the front plates 2 vertically adjacent to each other are stacked.
There is a gap above and below each other by the difference S ₁ . At this time, the leg 3 of the portion fitted into the groove 4 does not have to abut the bottom surface of the groove 4, and may have a gap.

At this time, as shown in FIG. 5, the upper and lower blocks may be stacked in a staggered manner for each stage, but they may be stacked at the same position. In the case of stacking in a zigzag manner as shown in FIG. 5, when the installation dimension L ₁ from both ends in the lateral direction of the legs 3 and 3 is 1/4 of the total length L, between the concrete blocks 1 adjacent to each other in the lateral direction. They are lined up without any gaps. When L ₁ <1/4 L, the gap S ₂ is arranged by twice the difference.

As shown in FIG. 5, when the concrete blocks 1 arranged on the back side are stacked in a zigzag pattern on the one arranged on the front side, only half of the concrete blocks 1 are uneven at both end portions of the retaining wall. Therefore, in order to align the ends, ones having a length of 1/2 or 1.5 times that of the other blocks are used at both ends.

7 and 8 show a state in which the concrete block 1 according to the present invention is used as a revetment for a river to form an empty retaining wall, and concrete is placed on a foundation 8 inclined by an inclination of the slope. The blocks 1 are turned upside down step by step, and the legs 3 of the upper side are engaged with the concave grooves 4 of the lower side to sequentially stack them. At this time, the space between the concrete blocks 1 and the back side thereof are filled with rubble 9 such as rubble stones and concrete debris.

On the slope of the river, however, the front plate 2 is stacked with a gap of S _{1 in} the vertical direction and a gap of S _{2 in} the horizontal direction, and the front plates 2 in the vertical direction 2 are stacked.
A leg 3 is projected between the two. And this each leg 3
A log 10 such as a thinned material is attached to the tip of each of the legs 3 with a bolt 11 that is screwed into a bolt screw hole member 5 embedded in the tip of the leg 3 with an insert.

The configuration of the present invention is not limited to the configuration shown in the above embodiment. That is, in the above-described embodiment, the concrete blocks 1 that are laid in the front-rear direction are vertically overlapped with each other at the portions of the legs 3 as shown in FIG. 6, and the height of the legs 3 (h ₂ + h ₂ ) Although the leg 3 is made to project upward from the upper side of the front plate 2 by the difference S ₁ in height (H) between the front plate 2 and the front plate 2, the height of the leg 3 that fits into the groove 4 is set to the groove. 4 may be made higher than the depth of 4, and this portion may be brought into contact with and fitted to the bottom surface of the concave groove 4, and the leg 3 may be projected upward from the upper side of the front plate 2 by the difference S ₁ . In this case, the legs of the concrete blocks to be stacked do not have to abut each other.

[0025]

EFFECTS OF THE INVENTION According to the present invention, the concrete blocks can be stacked upside down on each stage by one type of concrete block, and the construction can be simplified and economical. is there.

When the above-mentioned empty construction is carried out, a gap is formed between the front plates in the vertical direction by the legs, whereby a porous retaining wall can be formed, excellent water permeability, and a living space for living things. Can be provided as a retaining wall. Further, if plants grow above the gap, a more natural environment can be created.

Further, by attaching a log to the tip of the leg projecting on the surface of the retaining wall assembled as described above with a bolt, the front plate portion is hidden by this log, and thus the retainer composed of a concrete block. Even though it is a wall, it can give the appearance of a more natural retaining wall. If thinned wood is used in the underwater area, it will become a shadow and become a habitat for fish and other habitats. And using thinned wood for the above logs,
We will try to utilize the resources.

[Brief description of drawings]

FIG. 1 is a front view of a block for an empty set retaining wall according to the present invention.

FIG. 2 is a partially cutaway side view.

FIG. 3 is a perspective view seen obliquely from the front.

FIG. 4 is a perspective view seen from diagonally behind.

FIG. 5 is a perspective view showing a concrete block in a stacked state.

FIG. 6 is a side view showing a concrete block in a stacked state.

FIG. 7 is a sectional view showing an empty set retaining wall using the concrete block according to the present invention.

FIG. 8 is a perspective view showing an empty set retaining wall using the concrete block according to the present invention.

[Explanation of symbols]

1 ... Concrete block, 2 ... Front plate, 3 ... Legs, 4 ...
Grooves, 5 ... Bolt screw hole member, 6 ... Notched step, 7 ... Abutting step, 8 ... Foundation, 9 ... Rubble, 10 ... Log.

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02B 3/14 301 E02D 29/02 303 E02D 29/02 307 E02D 17/20 103

Claims (5)

(57) [Claims] 1. A front plate, which has a horizontally long rectangular front shape, and is provided with concave grooves at a plurality of upper sides in a longitudinal direction, and a front plate which projects from the rear surface of the front plate and at the position where the concave grooves are formed. It consists of a plurality of legs, and the width of the tip of the leg is set to fit in the groove,
A concrete block for an empty set retaining wall, characterized in that the height of this portion is made higher than the depth of the concave groove, and a contact step is provided at the tip of the upper side of this leg. 2. A front plate, which has a horizontally long rectangular front shape, and is provided with concave grooves at a plurality of upper sides in a longitudinal direction, and a front plate which projects from the rear surface of the front plate and at the position where the concave grooves are formed. The width of the tip of the leg is such that it fits into the groove, and the lower side is aligned with the lower side of the front plate, and the height h ₂ from the lower side of the front plate is Lower than the height H of the front plate and 2h ₂
A concrete block for an empty set retaining wall, characterized by having a relationship of> H and having a stepped portion provided at the tip of the upper side. 3. The concrete block for an empty set retaining wall according to claim 1, wherein a bolt screw hole member is embedded in the tip of the leg by an insert. 4. The concrete block for an empty set retaining wall according to claim 1 or 2 is turned upside down step by step, and the front plate of the upper concrete block is attached to the leg of the lower concrete block. A set of empty set retaining walls characterized by abutting the parts, fitting the tips of the legs into the concave grooves and stacking them in sequence, and filling the space surrounded by each of the stacked concrete blocks with rubble stones and concrete debris. Stacking method. 5. A log of thinned wood or the like, which is arranged over the adjacent legs, is attached to each tip of the legs of the concrete block projecting to the front side of the retaining wall with bolts. Masonry method for the empty retaining wall described.