JP2003082694A - Block for retaining wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow moisture, intruding into a retaining wall, to be discharged outside the retaining wall, enable the prevention of runoff, outside the retaining wall, of sediment and the like, which are charged as a packing material into the retaining wall along with the moisture, and enable the growth of vegetation from a front part of a block for the retaining wall. SOLUTION: The block for the retaining wall has a block body 10 which has a void part 11 opening only in a vertical direction, a hole part 12 which is drilled on the front side of the front part of the block body 10 and communicates with the void part 11, and a porous concrete member 13 which is provided on the front side of the front part of the block body 10 in such a manner as to cover the hole part 12; and an opened hole part 14, which communicates with the void part 11, is formed on the backside of a rear part of the block body 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall block used as a retaining wall installed for revetment of rivers and retaining soil on slopes, and more particularly, to a retaining wall for retaining water that has penetrated into the retaining wall. When the soil is discharged to the outside of the retaining wall, the earth and sand thrown into the retaining wall are prevented from flowing out of the retaining wall together with the moisture, and the wall weight of the retaining wall is prevented from decreasing. It relates to a retaining wall block.

[0002]

2. Description of the Related Art Conventionally, retaining walls have been installed on river banks to prevent erosion from water streams. In addition, on the slope facing the road, a retaining wall is installed to prevent the slope from collapsing, and the slope is earth-retained. When installing these retaining walls on the slope, a construction method called "block type" is often used. The block method is a method of installing retaining walls by stacking "stacking blocks" that are made of concrete in advance at the factory, and is more effective than placing fresh concrete at the construction site. This is an effective construction method because it can be constructed in a short period of time using small-scale equipment.

Since "construction efficiency" has been given the highest priority in the installation of the retaining wall in the past, the riverbanks and slopes where the retaining wall was installed are completely filled with concrete, and the landscape is derived from concrete. There was only one gray color, and it was not an environment where we could get to know "natural" very much. In addition, the retaining wall filled with concrete as described above has a great load on the ecosystem, such as depriving the habitat of plants and animals.

Therefore, in recent years, "vegetation" tends to be promoted on the surface of the retaining wall by vegetating the surface of the retaining wall with vegetation. As a technique relating to the retaining wall block that promotes such vegetation of plants, those shown in FIGS. 11 to 12 have been proposed. The retaining wall block shown in these drawings is one in which the front side portion and the back side portion are connected by an intermediate portion and are integrally formed in a so-called "substantially E shape". A plurality of the retaining wall blocks are arranged side by side, and these retaining layers are laminated to form a retaining wall. Here, as shown in FIG. 11, the retaining wall block is provided with concave portions or convex portions at the upper and lower ends of the back side portion, respectively. The retaining wall block is juxtaposed to the slope,
By stacking these on top of each other, the wall body is constructed. When the retaining wall blocks are stacked vertically, the recesses or protrusions are engaged with each other, so that the back side portions of the retaining wall blocks come into close contact with each other without a gap. Further, a cavity is formed between the blocks for the retaining wall that are stacked one above the other, and the front side portions of the blocks for the retaining wall are arranged through a gap communicating with the cavity.

On the other hand, as described above, since the block main body of the retaining wall block is formed in a substantially E shape, the retaining wall block is provided with the "cavity portion" communicating in the lateral direction.
By stacking the retaining wall blocks having the hollow portions in the vertical direction with respect to the slope, a "groove-shaped hollow portion" is produced. As a filling material in this groove-shaped cavity,
Inserting vegetation soil mixed with seeds of vegetation, etc., "gap" created above or below the front side of the block body
This means that vegetation will be vegetated from here, and the surface greening of the retaining wall will be possible. In this respect, it can be said that the technique relating to the retaining wall block is effective.

However, the technique relating to this retaining wall block has the following problems. That is, as described above, in this retaining wall block, the gap formed in the front side portion of the block main body is the "cavity" between the retaining wall blocks.
The cavities are filled with vegetation soil. When water derived from rainfall, river water flow, or the like enters there, the water is discharged to the outside of the retaining wall through the “gap” formed on the upper and lower surfaces of the front side portion of the block body. Then, as this moisture is discharged to the outside of the retaining wall, the vegetation soil thrown into the “opening” of the block body also becomes muddy water and flows out of the retaining wall. There is a problem that the weight of the wall body may decrease due to the vegetation soil, which is a filling material, flowing out of the retaining wall, and that it becomes difficult to green the retaining wall surface.

Moreover, there is a problem that the river in which the retaining wall is installed is polluted by the filling material flowing out of the retaining wall. On the other hand, when the retaining wall is installed on the slope facing the road, there is a risk that the filling material may flow out and scatter the filling material on the road.

In order to solve such a problem, a "mesh" or the like is installed so as to cover the "gap" sandwiched between the front side parts of the block body, thereby preventing the filling material from flowing out. I was out. However, it was troublesome to install "nets" in all the gaps of the retaining wall, and it was also a cause of extending the construction period.

[0009] In the first place, in a stacking block made of concrete, since it is not possible to vegetate from the portion corresponding to the wall surface, a "gap" is provided between the retaining wall blocks, and the limit corresponding to the gap is provided. By vegetation of vegetation within the designated area, the surface of the retaining wall is greened. Here, if an attempt is made to widen the gap in order to increase the vegetation area of vegetation, the amount of vegetation soil flowing out together with water will increase. On the other hand, if the gap is narrowed to prevent the outflow of the filling material, the vegetation area of the vegetation will be significantly reduced, and the purpose of surface greening of the retaining wall will not be fulfilled.

Therefore, the present invention has been found to be effective as a result of various studies to solve the above-mentioned problems, and it has been found that it is effective to vegetate from the front part of the front part of the block body itself. The problems to be solved are as follows.

[0011]

That is, the problem to be solved by the present invention is that first, the moisture that has penetrated into the retaining wall can be discharged to the outside of the retaining wall, and then the moisture is outside the retaining wall. When it is discharged to the retaining wall, it is possible to prevent earth and sand etc. that have been put into the retaining wall as filling materials due to the moisture from flowing out of the retaining wall. The point is that it enables vegetation of vegetation.

[0012]

Means for Solving the Problems In order to solve the above problems, the means adopted by each invention will be described with reference to the reference numerals used in the embodiments.

First, the retaining wall block 10 according to claim 1.
Reference numeral 0 indicates a block body 10 having a cavity portion 11 that is open only in the vertical direction, a hole portion 12 that is formed in front of the front portion of the block body 10 and communicates with the cavity portion 11, and the hole portion 12 And a porous concrete member 13 provided on the front surface of the front part of the block body 10.

That is, the retaining wall block 100 of the invention according to claim 1 is for installing the retaining wall by stacking as shown in FIG. 1, and as shown in FIG. Has a cavity 11 that is open only in the vertical direction. As shown in FIG. 3, a filling material such as earth and sand is put into the hollow portion 11, and the block body 10 is fixed to the slope due to the weight of the filling material. Will be fixed to a predetermined slope without falling.

The hole portion 12 formed in the front portion of the front portion of the block body 10 is formed so as to communicate with a "cavity portion 11" which is opened only in the vertical direction of the block body 10.
The holes 12 allow the moisture to pass through when the moisture derived from rainfall or the water flow of the river enters the “cavity 11”, so that the moisture is discharged from the front of the front of the block body 10. Is.

On the other hand, the "hole 12" formed in the front front portion of the block body 10 is covered and closed by the porous concrete member 13. The porous concrete member 13 is made of porous concrete and discharges the water that has entered the retaining wall to the outside of the retaining wall and the outflow of the filling material that has been injected into the cavity portion 11 of the retaining wall. Is to prevent.

Since the above-mentioned porous concrete has a large number of (continuous) voids by its nature, it has water permeability and is capable of transmitting water. Therefore, when the moisture that has entered the retaining wall is discharged to the outside of the retaining wall, even if the moisture and the filling material are mixed together to form muddy water, the porous concrete member 13 By filtering out the filling material from the muddy water, the water content and the filling material are separated from each other. Therefore, the moisture can be smoothly discharged to the outside of the retaining wall, while the filling material can be retained inside the retaining wall.

Further, the above-mentioned porous concrete member 1
Porous concrete forming No. 3 has many many voids as compared with normal concrete, and is itself relatively soft concrete. Therefore, a plant such as a plant can be rooted on the front surface of the porous concrete member 13. In order to root plants such as vegetation on the front part of the porous concrete member 13, seeds of plants are sprayed on the surface of the wall body after forming the wall body, or the hollow portion of the block body 10 is formed. It is conceivable to put "vegetation soil" mixed with plant seeds into 11 and germinate them for vegetation. In addition, as mentioned above, it is not necessary to actively sow the seeds,
The seeds that came naturally came from the porous concrete member 1
It is possible to vegetate a plant even if it adheres only to the surface of No. 3.

In this way, by providing the porous concrete member 13 formed of porous concrete in the front front part of the block main body 10, since vegetation can be vegetated in the part, the surface greening of the retaining wall can be achieved. Can be achieved.

Further, the porous concrete member 1
Since 3 has a large number of (continuous) voids inside, it absorbs water from the back side of the wall surface by the capillary phenomenon. Therefore, when a plant or tree takes root on the porous concrete member 13, the water is supplied from the inside of the retaining wall, and the plant or tree can be grown.

On the other hand, the retaining wall block 10 according to the present invention.
When the river bank is protected by using 0, the porous concrete member 13 provided in the front part of the front of the block body 10 faces the water flow. At this time, since the porous concrete member 13 has many (continuous) voids inside, the capillary phenomenon occurs inside the porous concrete member 13.
By this capillarity, moisture is sucked up from the water flow by the capillarity and contributes to the vegetation of plants.

Since the "voids" of the porous concrete member 13 also provide a habitation space for small creatures such as insects, in addition to the surface greening, integration with the surrounding natural environment by the retaining wall is achieved. Will be easier.
Further, since the surface of the retaining wall is covered with the porous concrete, it is possible to prevent the occurrence of "halation" even under strong direct sunlight, which contributes to the improvement of the landscape.

As described above, since porous concrete has a high porosity, it tends to be more brittle than ordinary concrete. However, in the retaining wall block 100 according to the present invention, the block main body 10 itself is formed of concrete used when manufacturing a normal stacking block, and the porous concrete member 13 is provided only on the front front part of the block main body 10. Is attached or integrally provided. Therefore, the retaining wall block 100 according to the present invention exhibits excellent effects such as “separation of water and filling material” or “vegetation of plants and the like” by the above-mentioned porous concrete, and the retaining wall block 100 It is possible to secure the required strength.

Next, the retaining wall block 10 according to claim 2.
Reference numeral 0 indicates a block body 10 having a cavity portion 11 that is open only in the vertical direction, a hole portion 12 that is formed in front of the front portion of the block body 10 and communicates with the cavity portion 11, and the hole portion 12 And a porous concrete member 13 provided on the front surface of the front of the block main body 10,
An opening portion 14 communicating with the hollow portion 11 is formed on the rear surface of the rear portion of the block body 10.

That is, in addition to the structure of the invention according to claim 1, the retaining wall block 100 of the invention according to claim 2 has an "opening" communicating with the cavity portion 11 on the rear rear surface of the block body 10. The part 14 "is formed. here,
Constituent members that are the same as those of the retaining wall block 100 according to claim 1 are denoted by the same reference numerals in the drawings, and description thereof will be omitted. The "opening portion 14" is provided on the rear surface of the rear portion of the block body 10, and the cavity portion 11 of the block body 10 is provided.
Any structure may be used as long as it communicates with the. Specifically, in addition to forming a "hole" as an opening portion 14 on the rear surface of the block body 10, a "groove-like opening portion 14" is formed on either one of the upper and lower surfaces of the rear portion of the block body 10. Is formed (see each figure).

According to the retaining wall block 100 of the invention according to claim 2, since the opening portion 14 communicating with the cavity portion 11 is formed in the rear rear surface of the block body 10, the rear surface of the retaining wall and the slope are formed. The water between and passes through the inside of the “opening portion 14”, and permeates into the hollow portion 11 of the block body 10. Then, the water that has entered the hollow portion 11 passes through the hole portion 12 formed in the front portion of the front portion of the block body 10 and is discharged to the surface side of the retaining wall. Therefore, when soil retaining is performed on the slope using the retaining wall block 100 according to the present claim, it becomes possible to discharge the moisture that has penetrated into the ground on the back side of the retaining wall to the outside of the retaining wall. Therefore, it will contribute to the prevention of landslides caused by heavy rain.

Further, the retaining wall block 10 according to claim 3
In the retaining wall block 100 according to claim 1 or 2, 0 is formed on one of the upper and lower surfaces of the block main body 10 and engages with another retaining wall block 100.
And a recess 16 formed on the other of the upper and lower surfaces of the block body 10 and engaging with the protrusion 15 formed on another retaining wall block 100.

That is, in the retaining wall block 100 of the invention according to claim 3, in addition to the structure of the invention according to claim 1 or 2, the projection 15 is formed on either the upper or lower surface of the block body 10. However, the concave portion 16 is formed on the other side. Here, about the same component as the block 100 for retaining walls of Claim 1 or 2, the same code | symbol is attached | subjected in each figure,
The description is omitted.

According to the retaining wall block 100 of the invention according to the third aspect, when the retaining wall blocks 100 are stacked one above the other, the projections 15 or the recesses provided in the retaining wall block 100 are provided. 16 will engage each other. Therefore, it is possible to prevent the retaining wall blocks 100 stacked vertically from being displaced from each other in the front-rear direction.

The retaining wall block 100 according to claim 4 is
The retaining wall block 100 according to any one of claims 1 to 3.
The horizontal blade 17 is formed on the side surface of the block body 10 and forms a cavity by abutting against the side surface of the block body 10 of another retaining wall block 100.

That is, the retaining wall block 100 of the invention according to claim 4 is related to another retaining wall block 100 on the side surface of the block body 10 in addition to the configuration of the invention according to claims 1 to 3. The horizontal blade 17 is formed so as to form a cavity by abutting on the side surface of the block body 10. Here, the retaining wall block 100 according to claims 1 to 3.
Constituent members that are the same as those in FIG.

In the retaining wall block 100 of the invention according to the fourth aspect, the lateral blades 17 are provided so as to form the depressions on both side portions of the block body 10. This side blade 1
The retaining wall blocks 100 having the protruding portions 7 are juxtaposed with respect to the slope and are laminated on each other to form a wall body. Each retaining wall block 100 that constitutes this wall body comes into contact with another adjacent retaining wall block 100 by the lateral blades 17. When the horizontal blades 17 are brought into contact with each other, the “recess” on the side of the block body 10 forms a cavity between the adjacent retaining wall blocks 100. The wall body can be integrated by pouring a concrete for filling the cavity into the cavity and hardening the concrete.

According to a fifth aspect of the present invention, in the retaining wall block 100 according to any of the first to fourth aspects, the porous concrete member 13 provided at the front front portion of the block body 10 is made of porous concrete. It is formed by shearing the porous concrete plate 18, and the sheared surface formed by shearing the porous concrete plate 18 is the front part of the porous concrete member 13. is there.

According to the retaining wall block 100 of the invention of claim 5, when the retaining wall blocks 100 are laminated, the front portion of the porous concrete member 13 arranged on the surface of the retaining wall is " It will be formed by the "shear surface". Countless voids appear on the sheared surface of the porous concrete plate 18. Therefore, the front surface of the porous concrete member 13 should be
The use of the shearing surface makes it possible to smoothly discharge water from the retaining wall and to easily root plants such as vegetation, thereby further promoting greening of the retaining wall surface.

Further, according to the retaining wall block 100 of the invention according to the present invention, the porous concrete member 13 having the front portion having a constant color is provided even after a long time has passed after the production. It becomes possible. That is, a prefabricated porous concrete plate 1
By shearing 8 at the time of manufacturing the retaining wall block 100, it is possible to obtain the porous concrete member 13 having a front portion of a certain color without being affected by "oxidation" or "ultraviolet rays". It becomes.

[0036]

Preferred embodiments of the present invention will be described below.
An example will be described. (Embodiment 1) FIG. 1 is a block 1 for a retaining wall according to Embodiment 1.
The wall surface formed by stacking 00 is shown from the front.

The retaining wall block 100 according to this embodiment is
As shown in FIG. 4, the block body 1 having the cavity 11 is provided.
0, a hole 12 bored in the front portion of the front of the block body 10 and communicating with the cavity 11, and the hole 12
And a porous concrete member 13 provided on the front part of the front of the block body 10 to cover the above. Further, a groove-shaped opening 14 communicating with the cavity 11 is formed on the upper surface of the rear portion of the block body 10, and a protrusion 15 is formed on the upper surface of the side portion of the block body 10. A recess 16 that can engage with the protrusion 15 is formed on the lower surface. Further, the block body 1
Lateral blades 17 are provided on the side surface of 0 so as to form a recess.

FIG. 2 is a side view A- of the retaining wall according to FIG.
FIG. 2 is a cross-sectional view taken along the line A, in which a foundation block is laid at the bottom of the slope prior to the installation of the retaining wall block 100. After that, the retaining wall blocks 100 are juxtaposed on the base block, and the retaining wall blocks 100 are sequentially laminated to form a wall body. As shown in FIG. 2 or FIG. 9, the retaining wall block 100.
Has a protrusion formed on the upper surface of the block body 10,
A concave portion 16 that engages with the protrusion is formed on the lower surface. Therefore, it is possible to prevent the retaining wall blocks 100 stacked vertically from being displaced from each other in the front-rear direction.

FIG. 3 shows the wall body from above. As shown in FIG. 7, the lateral blades 17 are projectingly provided on the side portions of the retaining wall block 100 according to the present embodiment. As shown in FIG. 3, the retaining wall block 100 and the other (adjacent) retaining wall block 100 are juxtaposed by abutting the lateral blades 17 against each other. When the horizontal blades 17 are brought into contact with each other, a cavity is formed between the adjacent retaining wall blocks 100, and a concrete to be filled into the cavity is cast into the cavity to cure the concrete. To be one.

Further, as shown in FIG. 4 or FIG. 8, the retaining wall block 100 according to the present invention includes a block body 10 thereof.
Is provided with a cavity 11 that is open only in the vertical direction. By stacking the retaining wall blocks 100 on top of each other and communicating the cavity portions 11 with each other, a cavity that communicates in the vertical direction is formed inside the retaining wall. Then, as shown in FIG. 3, it is possible to increase the weight of the wall body by introducing the filling material into the cavity communicating in the vertical direction. Incidentally, it is considered preferable to use "vegetation soil" as the filling material to achieve greening of the surface of the retaining wall. Furthermore, seeds such as vegetation are mixed in advance in this vegetation soil, and the seeds are put into the "cavities that communicate vertically" and the seeds are germinated or vegetated, so that the retaining wall itself greens the surface. It may be done.

On the other hand, as shown in FIG. 4, FIG. 6 or FIG.
2 ”is bored, and the hole 12 is covered with a porous concrete member 13. Incidentally, FIG. 4 and FIG.
At 0, the portion shown by the broken line corresponds to the hole 12.

First, as shown in FIG. 8, the "hole 12" formed in the front portion of the front of the block body 10 communicates with the cavity 11 which is opened only in the vertical direction of the block body 10. It is what is formed. The "hole 12" allows the water that has entered the cavity 11 to pass therethrough, and allows the water to be discharged to the outside of the retaining wall. As described above, in the retaining wall block 100 according to the present embodiment, the groove-shaped opening 14 communicating with the cavity 11 is formed on the upper surface of the rear portion of the block body 10. (See FIG. 4 or FIG. 8). Therefore, FIG.
As indicated by the arrow inside, the water between the back surface of the retaining wall and the slope passes through the inside of the “opening portion 14”, and penetrates into the cavity portion 11 of the block body 10. .
Then, this water is discharged to the surface side of the retaining wall after passing through the hole 12 formed in the front portion of the front part of the block body 10.

Next, the "porous concrete member 13" provided on the front surface of the front of the block body 10 is made of porous concrete, and by covering the hole portion 12, it penetrates into the retaining wall. The water is discharged to the outside of the retaining wall and the filling material injected into the cavity 11 of the retaining wall is prevented from flowing out.

The porous concrete forming the porous concrete member 13 is formed by stirring the aggregate, the concrete and a small amount of water, and pressurizing them to cure them. Somewhat larger crushed stone (natural gravel with a diameter of 13 mm to 20 mm)
To use. Porous concrete having a porosity of 18% or more can be obtained by stirring the aggregate with concrete and water and applying pressure to cure the aggregate.

The porous concrete member 13 is formed by driving the above-mentioned porous concrete into a mold and hardening it. Then, as shown in FIG.
This porous concrete member 13 is attached to the block body 10
By arranging it in the front part of the front part, the hole part 12 formed in the front part of the block body 10 is covered. In FIG. 6, the prefabricated block body 10 and the porous concrete member 13 are integrally formed by adhering or fitting them to each other, but the present invention is not limited to this and is not limited to the following. It may be manufactured as described above.

That is, first, while the porous concrete member 13 is manufactured by the above-described method, the block main body 1 is manufactured.
In 0, concrete is driven into the mold up to the position corresponding to the line C-C in FIG. Then, the previously manufactured porous concrete member 13 is placed on the block main body 10 relating to the above-mentioned semi-finished product, and the concrete forming the block main body 10 is placed in the void in the back portion of the porous concrete member 13. Impregnate and cure the concrete. By such a method, the block body 10 and the porous concrete member 13 can be integrated with each other, and it is possible to withstand the earth pressure from the hollow portion 11 in the retaining wall block 100. is there.

In the front portion of the front portion of the block, a rubber lump or the like is placed in a formwork at the portion corresponding to the hole 12 and concrete is poured therein. By removing the hole 1
Forming 2 is considered suitable.

Since the above-mentioned porous concrete has many voids by its nature, it is possible to allow moisture to permeate. Therefore, when the moisture that has entered the retaining wall is discharged to the outside of the retaining wall, even if the moisture and the filling material are mixed together to form muddy water, the porous concrete member 13 By filtering out the filling material from the muddy water, the water content and the filling material are separated from each other. Therefore, the moisture can be smoothly discharged to the outside of the retaining wall, while the filling material can be retained inside the retaining wall.

Further, the above-mentioned porous concrete member 1
3 is made of porous concrete. This porous concrete has many voids as compared with normal concrete, and since it is relatively soft concrete itself, it is possible to root plants such as vegetation in the portion of the porous concrete. is there. By providing the porous concrete member 13 formed of this porous concrete in the front part of the front part of the block body 10, it is possible to vegetate the part, so that the surface of the retaining wall can be greened. Of.

Further, as described above, since the water is discharged from the inside of the retaining wall, the water will seep to the surface of the retaining wall. Therefore, the porous concrete member 1
When the vegetation is planted on the No. 3, the water is supplied from the inside of the retaining wall, and the vegetation can be grown. In addition, since the "voids" of the porous concrete member 13 also provide a habitat space for small creatures such as insects, it is easy to integrate with the surrounding natural environment by the retaining wall together with the surface greening. It will be.

The porous concrete member 13 has many voids, and these many voids are
It will act to absorb ambient sounds. Therefore, when a retaining wall is constructed by using the retaining wall block 100 according to the present embodiment and the retaining wall is installed on the slope facing the road on which the automobile passes, the noise generated by the automobile is retained by the retaining wall. The walls will absorb it.

The porous concrete member 13 in the present invention may be formed by shearing the "porous concrete plate 18" made of the porous concrete. That is, as shown in FIG. 5, first, the "porous concrete plate 18" is formed in a state where the two porous concrete members 13 are joined together at their front portions. Next, the porous concrete member 13 is formed by inserting the blade into the broken line portion of the porous concrete plate 18 and shearing it to divide one porous concrete plate 18 into two. Then, as shown in FIG. 6, the porous concrete member 13 is provided in the front front portion of the block body 10 to cover the hole 12 formed in the front front portion of the block body 10. The porous concrete plate 18 may be formed in a state in which three or more porous concrete members 13 are joined.

The front portion of the porous concrete member 13 obtained by this method has a "shear surface", and innumerable voids appear in the shear surface. Therefore, the porous concrete member 13
By making the front face of the sheared surface of the porous concrete plate 18 smooth out water from the retaining wall, it becomes easy to root plants such as plants and trees, and the surface of the retaining wall can be greened. It will be further encouraged.

Further, the porous concrete plate 18 is cut along the broken line portion, and the front portion of the porous concrete member 13 is used as a "split surface", and the retaining wall blocks 100 having these porous concrete members 13 are laminated to form a wall. When a body is formed, the surface of the wall body can be formed with a texture like natural stone. That is, the front part of the porous concrete member 13 is covered with a large number of irregularities so that the porous concrete member 13 has a rugged shape. In this case, it is possible to suppress unnatural brightness, and it is possible to prevent "halation" from occurring even in strong direct sunlight.

Further, as described above, the porous concrete in this embodiment uses "crushed stone (natural gravel)" as its aggregate. Therefore, a split surface of natural gravel, which is an aggregate, is exposed at the front portion of the porous concrete member 13 formed by splitting the porous concrete plate 18 at the broken line portion. Therefore, the retaining wall configured by using the retaining wall block 100 according to the present embodiment does not darken as a whole due to "soot" or the like even after years, and is derived from natural gravel that is an aggregate. It keeps the vivid colors that it does.

Further, according to the retaining wall block 100 having the porous concrete member 13 having the above-mentioned "split surface", even if a long time has passed after the production, the retaining wall block 100 has a front portion having a constant color. It is possible to provide the porous concrete member 13. That is,
At the time of manufacturing the retaining wall block 100, by shearing the prefabricated porous concrete plate 18,
Thus, it is possible to obtain the porous concrete member 13 having the front portion having a certain color without being affected by “oxidation” or “ultraviolet rays”.

In this respect, in the conventional loading block,
When a long time has passed after the fabrication, the surface of the block is discolored, and the color tone is different from that of the newly created stacked block. Therefore, in principle, the ordering source buys all of the lots from the loading blocks once produced in a lot, and the surplus is actually discarded as concrete waste.

Therefore, the retaining wall block 1 according to the present embodiment.
As described above, 00 can always be provided in a constant color without being affected by “oxidation” or “ultraviolet rays”. Therefore, it is not necessary for the ordering source to "purchase lots", which makes it possible to reduce the construction cost and also contribute to the reduction of the amount of waste concrete.

In the present invention, the porous concrete member 13 is not limited to being formed by shearing the porous concrete plate as described above. That is, the porous concrete member 13 may be formed only by driving porous concrete into a mold and hardening it.

The retaining wall block 100 according to the present invention is
By providing the porous concrete member 13 on the front portion of the front of the block body 10, the hole 12 communicating with the cavity 11 of the block body 10 is covered. Here, the porous concrete member 13 is formed of porous concrete, and this porous concrete has high water permeability because it has many voids inside. Since it has such high water permeability, when the moisture that has entered the cavity 11 of the block body 10 is discharged to the outside of the retaining wall, only this moisture is discharged to the outside of the retaining wall, while filling the inside The material can be retained in the retaining wall. That is, the retaining wall block 1 according to the present invention
00 covers the hole 12 communicating with the inside of the retaining wall with a member having high water permeability, so that the moisture in the retaining wall is discharged to the outside of the retaining wall, and the filling material is the retaining wall. One of the features is that it is kept inside.

Therefore, the structure other than the above is included in the technical scope of the present invention as long as it satisfies the above structural requirements. For example, covering the hole 12 formed in the front portion of the front portion of the block body 10 is not necessarily limited to the member formed of porous concrete. That is, as long as a high porosity can be achieved like porous concrete and a large number of pores act like a filter, any material may be used.

That is, when the plate member is mounted on the front surface of the block main body 10 as long as it allows only moisture to pass through while retaining the filling material in the retaining wall without allowing it to pass, for example, The plate member may be formed of cellular concrete represented by “ALC” or the like, and the plate member may be attached to the front portion of the front of the block body 10. "ALC" is composed of calcareous raw materials and siliceous raw materials as main raw materials, and added a foam material to make them porous, and autoclave-cured "lightweight cellular concrete (Autocl
aved Lightweight Concrete) ".

[0063]

The retaining wall block according to the first aspect of the present invention has a block main body having a hollow portion that is open only in the vertical direction, and a block front surface of the block main body that is bored and communicates with the hollow portion. The structural feature is that it has a hole and a porous concrete member that covers the hole and is provided in front of the front part of the block body.

According to the retaining wall block of the invention of claim 1, since the porous concrete member is provided to cover the hole formed in the front portion of the front of the block body, the block is provided. Moisture that has entered the cavity of the main body is discharged to the outside of the retaining wall, while the filling material introduced into the cavity can be retained in the retaining wall without flowing out. Will play.

Further, according to the retaining wall block of the invention according to the present invention, it is possible to root the plant in the porous concrete member and supply water to the plant by the capillary phenomenon of the porous concrete. Since plants can be vegetated on the porous concrete member, it is possible to green the retaining wall surface. Furthermore, since the "voids" of the porous concrete member also provide a habitat space for small organisms such as insects, it becomes easy to integrate the surrounding wall environment with the retaining wall together with the surface greening. The effect will be produced.

Further, the retaining wall block according to the present invention is
"Separation of water and filling materials" or "vegetation such as vegetation" Porous concrete members and the block body that secures the strength as a retaining wall block are made of different materials. The strength required for the block can be ensured.

Next, the retaining wall block according to claim 2 is
A block main body having a cavity that opens only in the up-down direction, a hole that is formed in the front of the front of the block main body and communicates with the cavity, and the front of the block main body that covers the hole. And a porous concrete member provided on the front surface of the block, which is a rear portion of the block body, and a groove communicating with the cavity is formed on one of the upper and lower surfaces of the block main body. To do.

According to the retaining wall block of the invention according to claim 2, the following effect can be obtained in addition to the effect of the invention according to claim 1. That is, when retaining the soil on the slope, it is possible to discharge the water that has penetrated into the ground to the outside of the retaining wall, which also contributes to the prevention of landslides caused by heavy rain. To play.

The retaining wall block according to claim 3 is
The retaining wall block according to claim 1 or 2, wherein the protrusion is formed on one of the upper and lower surfaces of the block body and is engaged with another retaining wall block, and is formed on the other of the upper and lower surfaces of the block body. It has a structural feature that it has a concave portion that engages with the protrusion formed on another retaining wall block.

According to the retaining wall block of the invention according to claim 3, the following effect is exhibited in addition to the effect of the invention according to claim 1 or 2. That is, when the retaining wall blocks are stacked vertically, the protrusions or recesses provided in the retaining wall blocks engage with each other, so that the vertically stacked retaining wall blocks are mutually interlocked. Therefore, there is an effect that it is possible to prevent the displacement in the front-back direction.

A retaining wall block according to a fourth aspect is the retaining wall block according to any one of the first to third aspects, wherein the retaining wall block is formed on a side surface of the block body. It is characterized in that it has a lateral blade that forms a cavity by abutting against the side surface.

According to the retaining wall block of the invention of claim 4, in addition to the effects of the inventions of claims 1 to 3, the retaining wall blocks are juxtaposed with respect to the slope and When the wall is constructed by laminating each other,
The retaining wall block and other adjacent retaining wall blocks come into contact with each other by the horizontal blades, and the "recess" on the side of the block body forms a cavity between the adjacent retaining wall blocks. Then, by pouring concrete into the cavity and hardening the concrete, it is possible to firmly and integrally form the wall body.

According to a fifth aspect of the present invention, in the retaining wall block according to any one of the first to fourth aspects, the porous concrete member provided in the front front portion of the block body is a porous concrete plate made of porous concrete. Is formed by shearing the porous concrete plate, and the sheared surface formed by shearing the porous concrete plate is a front part of the porous concrete member, which is a characteristic feature of the configuration. .

According to the retaining wall block of the invention of claim 5, when the retaining wall blocks are laminated, the front portion of the porous concrete member arranged on the surface of the retaining wall is "sheared". It will be formed by the "face". Countless voids appear on the shear plane of this porous concrete plate. Therefore, by making the front surface of the porous concrete member a sheared surface of the porous concrete plate, it is possible to smooth the discharge of water from the inside of the retaining wall and to easily root plants such as vegetation. This has the effect of making it possible to promote greening of the surface.

Further, according to the retaining wall block of the invention according to the present invention, it is possible to provide a porous concrete member having a front surface portion having a constant color even after a long time has passed after being manufactured. It will be possible. That is, when a block for a retaining wall is manufactured, a prefabricated porous concrete plate is sheared, so that the porous concrete having a front portion relating to a certain color is not affected by "oxidation" or "ultraviolet rays". Thus, it is possible to obtain the member.

[Brief description of drawings]

FIG. 1 is a front view of a retaining wall configured by stacking retaining wall blocks 100 according to the present invention.

2 is a cross-sectional view taken along the line AA of the retaining wall according to FIG.

FIG. 3 is a view showing the retaining wall according to FIG. 1 from above.

FIG. 4 is a perspective view of a retaining wall block 100 according to the first embodiment.

FIG. 5 is a perspective view of a porous concrete plate 18 formed by joining two porous concrete members 13 together at their front portions.

FIG. 6 is a diagram showing a state in which a porous concrete member 13 formed by inserting and shearing a blade into a broken line portion of the porous concrete plate 18 according to FIG. 5 is attached to the front front portion of the block body 10. Is.

FIG. 7 is a plan view of the retaining wall block 100 shown in FIG.

8 is a BB cross-sectional view of the retaining wall block 100 shown in FIG.

9 is a side view of the retaining wall block 100 shown in FIG.

10 is a front view of the retaining wall block 100 shown in FIG.

FIG. 11 is a perspective view of a retaining wall block according to a conventional technique.

FIG. 12 is a view showing a cross section of a “retaining wall” formed by stacking the retaining wall blocks according to FIG. 11 on each other.

[Explanation of symbols]

100 retaining wall block 10 block body 11 Cavity 12 holes 13 Porous concrete members 14 Openings 15 Projection 16 recess 17 horizontal blades 18 Porous concrete board

Claims (5)

[Claims] 1. A block main body having a hollow portion that is open only in the up-down direction, a hole portion that is formed in front of a front portion of the block main body and communicates with the hollow portion, and covers the hole portion. A block for a retaining wall, comprising: a porous concrete member provided in front of a front portion of the block body. 2. A block main body having a cavity that opens only in the vertical direction, a hole that is formed in the front of the front of the block main body and communicates with the cavity, and the hole is covered. A block for a retaining wall, comprising: a porous concrete member provided on a front surface of a front portion of the block body; and an opening portion communicating with the cavity portion formed on a rear rear surface of the block body. 3. The retaining wall block according to claim 1, wherein a protrusion formed on one of the upper and lower surfaces of the block body and engaged with another retaining wall block, and the upper and lower surfaces of the block body. A retaining wall block formed on the other side of the retaining wall and engaging with the protrusion formed on the other retaining wall block. 4. The retaining wall block according to any one of claims 1 to 3, wherein the cavity is formed on a side surface of the block body and abuts against a side surface of the block body of another retaining wall block. A retaining wall block having a horizontal blade forming a. 5. The retaining wall block according to any one of claims 1 to 4, wherein the porous concrete member provided in the front front portion of the block body is formed by shearing a porous concrete plate made of porous concrete. A block for a retaining wall, wherein a sheared surface formed by shearing the porous concrete plate is a front portion of the porous concrete member.