JPH11181802A - Concrete block for retaining wall and retaining wall by the block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extremely simply build a retaining wall having a remarkably high strength. SOLUTION: A concrete block 1 for a retaining wall comprises front and rear block bodies 2 and 3 with a longitudinal distance therebetween;) and coupling block bodies 4 arranged between the upper edges of the front and rear block bodies 2 and 3, the concrete blocks being stacked in a lattice-form state on a whole. In this case, front fit-in parts 21 are formed in the upper and lower edges of the front block bodies 2, rear fit-in parts 31 are also formed in the upper and lower edges of the rear block body 3, and engaging parts 41 are formed on the upper and under surfaces on the front end side of the coupling body 41. The engaging parts 41 of the coupling block body 4 are formed on the upper and under surfaces on the front end side and the upper and under surfaces on the rear end side of the coupling block body 4. The engaging parts 41 of the coupling block body 4 are fitted in are fitted in the fit-in parts 21 and 31 of the front and rear block bodies 2 and 3 and lattice-form combination is practicable.

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 a retaining wall capable of constructing a retaining wall having extremely high strength, and a retaining wall constructed using the concrete block.

[0002]

2. Description of the Related Art As is well known, road and track slopes,
BACKGROUND ART Retaining walls are extensively constructed of concrete blocks for dams or in residential land development. Conventional concrete blocks for retaining walls are, for example,
As described in JP-A-13346, the shape is H-shaped when viewed from a plane where a trunk portion is provided between a front surface portion and a holding portion provided so as to be arranged in the front-rear direction. In order to construct a retaining wall using the above concrete blocks, concrete blocks to be piled up and down are shifted upward from the foundation by shifting the position by 1/2 of the width of the front part, and each concrete block is laid upward. Filling concrete is poured into the continuous space between the front part and the holding part, and the concrete is cured and cured.

[0003]

However, since the conventional concrete block has a short dimension in the front-rear direction and cannot be filled with a sufficient amount of concrete-filled concrete, it cannot sufficiently cope with earth pressure from a slope. Can not. In particular, when the slope is high, large earth pressure acts on the lower concrete block, and extremely large earth pressure also acts due to natural phenomena such as ground displacement and landslides. It will be an accident. Therefore, when constructing extremely high strength retaining walls, concrete blocks are laid side by side so that they face each other in the front-rear direction, and a reinforced concrete layer is provided inside the facing space between the concrete blocks to form a high-strength retaining wall. Build along the plane. However, even in the case of the retaining wall described above, the concrete blocks facing each other in front and rear are not connected to each other, so that it may not be able to withstand strong earth pressure. Therefore, there is a need for a retaining wall that can withstand extremely large earth pressure from a slope and that can be constructed extremely easily and safely.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks and needs, and the invention according to claim 1 is directed to a front block which is disposed at an interval in the front-rear direction. A concrete block for retaining wall comprising a body and a rear block body, and a connecting block body disposed between upper and lower edges of the front block body and the rear block body, and piled up in a cross beam shape as a whole, A front fitting portion is provided at an upper edge and a lower edge of the front block body, and a rear fitting portion is provided at an upper edge and a lower edge of the rear block body; An engaging portion is provided on the upper and lower surfaces of the rear end side, and the engaging portion of the connecting block body is fitted to each of the fitting portions of the front block body and the rear block body so that it can be combined in a cross-girder shape. Concrete blocks for retaining walls Is shall.

According to a second aspect of the present invention, there is provided a front block body provided with a front fitting portion at an upper edge and a lower edge, and a rear block body provided with a rear fitting portion at an upper edge and a lower edge. A side block body is disposed at an interval in the front-rear direction, and a connecting block body provided with engaging portions on the front end side and the rear end side between upper edges of the front block body and the rear block body is formed in an orthogonal shape. And each of the engaging portions of the connecting block is fitted to the fitting portion of the front block and the fitting portion of the rear block to be combined in a cross-girder shape. The present invention relates to a retaining wall of a concrete block, characterized by being filled with a filler inside the opposing space.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. The concrete block for construction 1 of the present invention has a front block 2 made of concrete, a rear block 3, and a connecting block 4 for connecting the two blocks 2, 3 in a cross-girder shape.

[0007] The front block 2 is a horizontally long rectangular plate having a thick plate shape, and has a front upper fitting recessed downward from the upper edge to an upper edge located at a quarter of the horizontal width from the side edge. The joint 21 is provided on the left and right. The front-side upper fitting portion 21 includes a concave portion 22 that opens to the upper edge, and a groove portion 23 that opens continuously to the rear surface of the front-side block body 2 from the rear surface of the concave portion 22 in a communicating manner.

Also, the lower edge portion of the front block body 2 is provided with left and right front lower fitting portions 24 which are recessed upward from the lower edge at a position 1/4 of the lateral width from the side edge. The front lower fitting portion 24 also has a concave portion 25 that opens to the lower edge similarly to the front upper fitting portion 21, and a groove portion that opens continuously from the back surface of the concave portion 25 to the rear surface of the front block body 2. 26. The recesses 22 and 25 and the grooves 23 and 26
, The opposing side surfaces are gently inclined so as to become gradually wider from the bottom surface toward the opening edge.

According to the embodiment shown in the drawings, communication holes 27 for connecting the upper front upper fitting portion 21 and the lower front fitting portion 24 are provided at the left and right inside the front block body 2, but they are not necessarily provided. There is no need to provide the communication hole 27. A fitting protrusion 28 is provided on the upper edge of the front block body 2 in the left-right direction, and a fitting recess 29 is provided on the lower edge, into which the fitting protrusion 28 can be fitted. Occasionally, the fitting projection 28 fits into the fitting recess 29 for accurate positioning, and the built-up retaining wall can improve the stacking strength.

The front block 2 of the present invention forms a retaining wall surface when constructed as a retaining wall, so that the surface can be decorated with a flat iron pattern, a natural stone pattern, a granite pattern, or the like.
Alternatively, a soil receiving portion can be provided to enable vegetation, or a storage portion for a sandbag in which plant seeds are embedded can be formed.

The rear block 3 is also the front block 2
A rear upper fitting portion 31 which is a horizontally long rectangular plate having the same dimensions as that of the thick plate, and which is recessed downward from the upper edge at an upper edge portion located at 1/4 of the lateral width from the side edge. Provide on the left and right. The rear upper fitting portion 31 includes a concave portion 32 opening at the upper edge similarly to the front upper fitting portion 21, and a groove portion 33 continuously opening from the front surface of the concave portion 32 and opening at the front surface of the rear block body 3. Consists of

Also, on the lower edge portion of the rear block body 3, a rear lower fitting portion 34 which is recessed upward from the lower edge at a position 1/4 of the lateral width from the side edge is provided on the left and right. . The rear lower fitting portion 34 also has a concave portion 35 opening to the lower edge similarly to the rear upper fitting portion 31, and a groove portion continuously opening from the front surface of the concave portion 35 to the front surface of the rear block body 3. 36. In addition, the concave portions 32 and 35 and the groove portions 33 and 36
, The opposing side surfaces are gently inclined so as to become wider from the bottom surface toward the opening edge.

Further, similarly to the front block body 2, communication holes 37 for connecting the upper and lower rear upper fitting portions 31 and the lower rear fitting portion 34 are provided on the left and right inside of the rear block body 3. In addition, a fitting convex portion 38 is provided on the upper edge of the rear block body 3 in the left-right direction, and a fitting concave portion 39 on which the fitting convex portion 38 can be fitted is provided on the lower edge. When the work is performed, the fitting projection 38 is fitted into the fitting recess 39 so that accurate positioning can be achieved, and the built-up retaining wall can improve the stacking strength.

The connecting block 4 of the present invention is a rod-like rod of a thick prism made of concrete, having a front upper engaging portion 41 and a front lower engaging portion 42 above and below the front end.
A rear upper engagement portion 43 and a rear lower engagement portion 44 are provided above and below the rear end.

The front upper engaging portion 41 is a front block 2
The front lower engaging portion 42 has a shape that can be fitted and fitted to the front upper fitting portion 21 of the front block body 2, respectively. The rear block 3 has a shape that can be fitted to the rear lower fitting portion 34 and the rear lower engaging portion 44 so as to match with the rear upper fitting portion 31 of the rear block 3. .

The lower part of the lower surface of the connecting block body 4 except for the front end and the rear end is provided with a reinforcing portion 4 projecting downward.
5 between the front end of the reinforcing portion 45 and the rear surface of the front lower engaging portion 42, and between the rear end of the reinforcing portion 45 and the rear lower engaging portion 44.
Are provided with engagement notches 46 respectively.

The concrete block 1 of the present invention comprises the front block 2, the rear block 3 and the connecting block 4. To combine these blocks, as shown in FIGS. The front block 2 is disposed in front of the side block 3 with an interval corresponding to the length of the connecting block 4, and the upper edge of the front block 2 and the rear block 3 disposed before and after the front block 2. Connecting block 4 between
Is installed, the front lower engaging portion 42 of the connecting block 4 is attached to the front upper fitting portion 21 of the front block 2, and the rear lower engaging portion 42 of the connecting block 4 is attached to the rear upper fitting portion 31 of the rear block 3. The lower engagement portions 44 are fitted from above. Therefore, the front block body 2 and the rear block body 3 which are arranged in front of
Are connected by the left and right connection block bodies 4, and the front lower engagement portion 42 is firmly fitted to the front upper engagement portion 21, and the rear lower engagement portion 44 is firmly fitted to the rear upper engagement portion 31. Because I wear
The front block body 2 and the rear block body 3 are connected extremely strongly. Further, the engagement notch 4 on the front side of the connecting block 4
6 engages with the groove 23 of the front upper fitting portion 21,
Since the engagement notch 46 on the rear side of the connection block 4 is engaged with the groove 33 of the rear upper fitting portion 31, the connection strength between the front block 2 and the rear block 3 is further increased. The front block 2 and the rear block 3 do not tilt in the front-rear direction.

When the front block 2, the rear block 3 and the connecting block 4 are integrally combined by the above-described method, a front upper engaging portion 41 is provided on the upper surface of the front block 2. A rear upper engagement portion 43 protrudes from the upper surface of the side block body 3. Therefore, when the front block body 2 and the rear block body 3 to be laid are placed on the combined front block body 2 and rear block body 3, the front lower fitting portion 24 of the upper front block body 2 is stacked. The front upper engaging portion 41 of the connecting block body 4 is fitted to
The rear upper engaging portion 43 of the connecting block 4 is fitted to the rear lower fitting portion 34 of the rear block 3. For this reason, the front block body 2 and the rear block body 3 stacked vertically
Can be firmly connected to each other, and substantially one connection block 4 integrally connects the front, rear, upper and lower blocks.

In order to construct the retaining wall 101 with the above-described front block 2, rear block 3 and connecting block 4, as shown in FIG. 14, a slope 102 is placed on a concrete foundation 102 constructed on the ground. The lower rear block 3 is set in the horizontal direction along
The front block 2 is installed at a distance corresponding to the length of the connection block 4 on the front side of the front block, and the front block 2 is located between the upper edges of the front block 2 and the rear block 3 as described above. The connecting block body 4 is arranged for each of the front upper fitting portion 21 and the rear upper fitting portion 31 to be connected, and the front lower engaging portion 42 is changed to the front upper fitting portion 21.
Then, the rear lower engaging portion 44 is fitted to the rear upper fitting portion 31.
Therefore, each front block 2 and the rear block 3 are connected by two connecting blocks 4 on the left and right.

The second rear block 3 from the bottom
On the upper surface of the rear block body 3 at the lowermost half,
Is displaced only by the length of the connecting block, and is similarly displaced on the upper surface of the lowermost front side block 2 by a length equal to の of the horizontal width. The front upper engaging portion 41 is fitted to the second front lower fitting portion 24 from the bottom, and the rear upper engaging portion 43 is fitted to the second rear lower fitting portion 34 from the bottom.

In this way, when the blocks are sequentially laid upward from the bottom, the front block 2, the rear block 3 and the connecting block 4 are combined in a cross-girder manner. The distance between the rear surface and the front surface of the rear block body 3 constitutes. Therefore, during this interval, the discarded concrete may be filled and cured and cured. Retaining walls can be constructed simply by stacking, eliminating the need to cast concrete on site.

The retaining wall 101 thus constructed is
Since the front block body 2, the rear block body 3, and the connection block body 4 are firmly combined, it is possible to reliably receive the earth pressure from the slope. The retaining wall 101 can be piled upright as shown in FIG. 14, or can be piled up at an angle along the slope.

Another embodiment of the present invention shown in FIG.
The space between the front block body 2 and the rear block body 3 that oppose each other is such that the lower part of the retaining wall 101 is widened and the upper part is narrower than the lower part. That is, the retaining wall 101 is formed by the front block 2, the rear block 3, and the connecting block 4.
The lower three stages are stacked and the upper
This is a configuration in which the depth width is reduced by using a shorter connection block body.

As a specific configuration, the configuration of the front block 2 and the rear block 3 is the same as that of the above-described embodiment, but the front block 2 and the rear block 3 in the third stage from the bottom are used. As the second connection block body 5 that connects the upper edge with the third connection member 3, the constituent material shown in FIGS. 16, 17, and 18 is used.

The second connecting block 5 has a front upper engaging portion 41 and a front lower engaging portion 42 on the front end side, and a rear upper engaging portion 43 and a rear lower engaging portion 44 on the rear end side. The connection block body 4 has the same structure as that of the connection block body 4 except that a reinforcement portion 45 is provided on the lower surface and an engagement notch portion 46 is formed in the front and rear. An intermediate engaging portion 51 having the same configuration as 41 or the rear upper engaging portion 43 is provided.

Therefore, the front upper fitting portion 21 and the rear upper fitting portion 31 of the front block body 2 and the rear block body 3 of the third stage are connected by the second connection block body 5, and The front upper engagement portion 41 of the second connection block body 5 is fitted to the front lower engagement portion 24 of the front block body 2 of the fourth stage from the rear, and the rear lower portion of the rear block body 4 of the fourth stage from the bottom. When the intermediate engaging portion 51 is fitted to the fitting portion 34, the distance between the front block body 2 and the rear block body 3 at the fourth stage from the bottom is equal to the second space.
The front upper engaging portion 41 and the intermediate engaging portion 51 of the connection block body 5
, And is reduced by the length of the intermediate engaging portion 51 and the rear upper engaging portion 43.

As shown in FIGS. 19 and 20, at the fourth or higher retaining wall portion from the bottom, the length of the front upper engaging portion 41 and the intermediate engaging portion 51 of the second connecting block 5 is long. The third connecting block body 6 is used. The third connecting block body 6 is different from the connecting block body 4 only in that the third connecting block body 6 is shorter than the connecting block body 4. The third connecting block body 6 has a front upper engaging portion 41 and a front lower engaging portion 42 on a front end side, and a rear side on a rear end side. This is the same in that an upper engaging portion 43 and a rear lower engaging portion 44 are provided.

When a retaining wall is constructed by the front block 2 and the rear block 3 using the third connecting block 6, the fourth block or more from the bottom becomes the front block 2 and the rear block. Since the interval facing the body 3 is equal to the length of the third connection block body 6 and shorter than the connection block body 4, for example, the retaining wall 101 is not so high and the earth pressure acting on the upper portion of the retaining wall 101 is lower. It can be used for a slope that is weak or a hard ground where extreme earth pressure does not act upward. FIG. 15 shows a structure in which the front block 2 on the surface of the retaining wall 101 is flush, and the step of the rear block 3 is formed in the third step from the bottom of the slope.

However, as shown in FIG. 21, the front block 2 and the rear block 3 in the third stage
The front upper engaging portion 41 of the second connecting block body 5 is moved to the rear end side by using the connecting block body 5 in the front-reverse direction.
3 is positioned on the front end side, the front lower fitting portion 24 of the fourth stage front block body 2 is fitted to the intermediate engaging portion 51, and the rear lower portion of the rear block body 3 is fitted to the front upper engaging portion 41. When the fitting portions 34 are fitted and stacked, a step portion of the front block 2 is formed on the surface side of the retaining wall 101. Therefore, a step can be formed on either the slope side or the front side depending on the scene and the situation of the site.

In the second connecting block 5, two intermediate engaging portions 51 are provided at intermediate positions of the length, and the front upper engaging portion 41, the rear upper engaging portion 43, When the front block body 2 and the rear block body 3 are stacked using any one of the intermediate engagement portions 51, a more varied retaining wall 101 having a complicated step can be constructed. Reference numerals not described in FIG. 15 and subsequent drawings have the same configurations as the same reference numerals in the embodiments of FIGS. 1 to 14, and thus description thereof will be omitted.

Although the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above embodiments unless the structure described in the claims is changed. But it can be implemented.

[0032]

In summary, the present invention relates to a front block body and a rear block body which are disposed at an interval in the front-rear direction, and between an upper edge and a lower edge of the front block body and the rear block body. A concrete block for retaining wall having a connecting block body to be arranged and piled up as a whole in a girder shape, wherein a front fitting portion is provided at an upper edge and a lower edge of the front block body, and A rear fitting portion is provided at an upper edge and a lower edge, and an engaging portion is provided at an upper and lower surface on a front end side and an upper and lower surface at a rear end side of the connecting block body, and the engaging portion of the connecting block body is a front block body. The present invention also relates to a retaining wall concrete block which is fitted to each fitting portion of a rear block body and can be combined in a cross-girder shape, and a retaining wall using this concrete block.

Therefore, the opposing distance between the front block and the rear block can be set to any length depending on the dimensions of the connecting block, and the required length depends on the conditions such as the slope at the construction site. What is necessary is just to use a connection block body of the same. And since each front block body and rear block body are firmly connected by the connection block body and are integrally combined, it can withstand the earth pressure from a very strong slope, Collapse accidents can be significantly reduced. In addition, not only can the construction work be carried out by lifting the front block body, the rear block body, and the connection block body with a crane or the like at the site, but also there is almost no need to cast concrete at the site. It can bring security. Moreover, if the space between the front block and the rear block is filled with gravel, earth and sand, etc., it acts as a cushioning material, so that an unstable earth pressure from the slope is received on the entire slope side. In particular, cracks and the like do not occur on the surface side due to expansion and contraction due to a change in earth pressure, and there is no need to perform concrete placing work on site. In addition, since fine gaps are generated in the front block body and the rear block body adjacent vertically or horizontally, groundwater seeping from the slope passes through those gaps and the front block body and the rear block body It is effective for groundwater treatment because it flows through the space between the walls, and provides a technology of remarkably high value in retaining walls made of blocks.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a concrete block showing a first embodiment of the present invention.

FIG. 2 is a front view of a cross section of a right portion of the embodiment of the front block body.

FIG. 3 is a rear view of the front block body.

FIG. 4 is a plan view of a front block body.

FIG. 5 is a cross-sectional view taken along line A-A in FIG.

FIG. 6 is a front view in which a right portion of the embodiment of the rear block body is sectioned;

FIG. 7 is a plan view of a rear block body.

8 is a sectional view taken along line BB in FIG. 7;

FIG. 9 is a perspective view of an embodiment of a connecting block body.

FIG. 10 is a side view of the connecting block body.

FIG. 11 is a plan view of a connecting block body.

FIG. 12 is a perspective view showing a state in which a front block, a rear block, and a connection block are integrally connected.

FIG. 13 is a vertical sectional side view of FIG.

FIG. 14 is a vertical cross-sectional side view of a state constructed as a retaining wall.

FIG. 15 is a longitudinal sectional side view of a second embodiment of the retaining wall.

FIG. 16 is a perspective view of a second connection block body.

FIG. 17 is a side view of the second connection block body.

FIG. 18 is a plan view of a second connection block body.

FIG. 19 is a perspective view of a third connection block body.

FIG. 20 is a side view of the third connection block body.

FIG. 21 is a longitudinal sectional view of a third embodiment of the retaining wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete block 2 Front block body 3 Rear block body 4 Connection block body 5 2nd connection block body 6 3rd connection block body 21 Front upper fitting part 22 Depression 23 Groove part 24 Front lower fitting part 25 Depression 26 Groove part 27 Communication Hole 28 Fitting convex portion 29 Fitting concave portion 31 Rear upper fitting portion 32 Recessed portion 33 Groove portion 34 Lower lower fitting portion 35 Recessed portion 36 Groove portion 37 Communication hole 38 Fitting convex portion 39 Fitting concave portion 41 Front upper engaging portion 42 front lower engaging part 43 rear upper engaging part 44 rear lower engaging part 45 reinforcing part 46 engaging notch 101 retaining wall 102 base 103 filler

Claims (3)

[Claims] 1. A front block body and a rear block body which are disposed at intervals in a front-rear direction, and a connecting block body arranged between upper edges and lower edges of the front block body and the rear block body. It is a concrete block for retaining wall which is piled up in a cross shape as a whole, wherein a front fitting portion is provided at an upper edge and a lower edge of the front block, and a rear fitting portion is provided at an upper edge and a lower edge of the rear block. A side fitting portion is provided, and an engaging portion is provided on upper and lower surfaces of a front end side and a rear end side of the connecting block body. The engaging portion of the connecting block body is formed of a front block body and a rear block body. A concrete block for a retaining wall, wherein the concrete block is fitted to a fitting portion and can be combined in a cross-girder shape. 2. A front block body having a front fitting portion provided at an upper edge and a lower edge, and a rear block body having a rear fitting portion provided at an upper edge and a lower edge are spaced apart in the front-rear direction. Between the upper edge of the front block body and the rear block body, the connection block body provided with the engagement portion on the front end side and the rear end side is arranged orthogonally, and each engagement of the connection block body The parts are fitted to the fitting part of the front block and the fitting part of the rear block body and combined in a cross-girder shape, and the inside of the space between the front block body and the rear block body facing each other is filled with filler. A retaining wall made of concrete blocks. 3. The concrete block according to claim 2, wherein the space between the front block body and the rear block body is filled with gravel, stone, sand, earth and sand, etc., as a filler. wall.