JP6908932B2 - Edge stop block unit and edge stop wall structure - Google Patents

Description

The present invention relates to a fore-stop block unit and a fore-stop wall structure using the block unit.

A small stop wall made of concrete or the like is provided to protect both ends of a structure such as a block retaining wall from being eroded and destroyed. Conventionally, the construction of a fore-edge retaining wall is performed at the construction site by digging the floor along the slope and creating the foundation through the excavation part, and assembling the formwork with a plate material on the upper surface of the foundation part, and this formwork. It was done by pouring concrete into it, curing and solidifying it, and then removing the formwork.

The construction site of the block retaining wall is not always a place where heavy machinery and other work machines can be easily carried in, and it is often a mountainous area or an undeveloped area. For this reason, it has been desired to improve workability and shorten the construction period for the construction of block retaining walls including edge retaining walls. In addition, although the width of the fore-edge stop wall is about 30 cm when viewed from the front, the height is up to 5 m, which is unstable and safe in the construction method of assembling a formwork and placing concrete. Improvement was also desired from the viewpoint of.

Therefore, in Patent Document 1, the precast concrete block arranged on the front side and the precast concrete block arranged on the back side are bound by a reinforcing bar via an anchor, and between the side surface of the block on the front side and the side surface of the block on the back side. However, a fore-edge stop block connected by a pair of side plates arranged opposite to each other is described. Then, the blocks were stacked while adjusting the distance between the front side block and the back side block according to the slope slope and the side wall surface slope, and were surrounded by the front side block, the back side block, and a pair of side plates. A technique for pouring ready-mixed concrete into a space and placing it is disclosed.

Further, in Patent Document 2, a plurality of types of edge-stopping blocks, which are box-shaped blocks with upper and lower surface openings and have different lengths from the front surface portion to the rear surface portion, are prepared, and a front portion is placed on the lower side of the edge stopper wall. A technique is disclosed in which blocks having a long length up to the rear surface portion are installed, and as the blocks are stacked, the blocks having a short length are used to form a fore-edge retaining wall.

Further, in Patent Document 3, a pair of side surface portions facing each other at intervals and a front surface portion connecting one end portions of a pair of side surface portions in a direction perpendicular to the opposite direction of the pair of side surface portions are described. The pair of side surfaces are connected to each other on the front surface side of the other end of the pair of side surface portions, and the front surface portion is provided with an intermediate portion facing each other at a distance, and the surface of the front surface portion has a predetermined shape and shape. -A fore-edge stop block with lightness is disclosed.

Japanese Unexamined Patent Publication No. 2014-156756 Japanese Unexamined Patent Publication No. 01-174439 Japanese Unexamined Patent Publication No. 2016-37722

However, in the edge-stopping block of Patent Document 1, the work of adjusting the distance between the front side block and the back side block and binding them with reinforcing bars at the construction site, and the side surface of the front side block and the back side block in which the distance is adjusted are adjusted. It is necessary to enclose the space with a pair of side plates.

Further, in the edge-stopping block of Patent Document 2, it is necessary to prepare a plurality of types of edge-stopping blocks having different lengths from the front surface portion to the rear surface portion, and the production efficiency of the edge-stopping block is poor. In addition, if the length of the edge stop block is small, the workability at the construction site may decrease.

Further, since the back side of the fore-edge stop block of Patent Document 3 is open from the middle part, when the backfill concrete is poured when forming the fore-edge stop wall, the back side of the fore-edge stop block is placed on the back side of the middle part. It is considered necessary to assemble the formwork so as to surround it on all sides with a plate material, etc., and there is a risk that workability at the construction site cannot be improved.

Therefore, the present invention has been made in view of such conventional problems, and an object of the present invention is to obtain excellent workability at a construction site, shorten the construction period, and improve safety. And to provide a fore-edge retaining wall structure.

The edge-stopping block unit according to the present invention that achieves the above object is a pair of front side walls arranged to face each other at predetermined intervals, and the pair of front side walls in a direction perpendicular to the opposite direction of the pair of front side walls. A front block having a front wall connecting one end of a side wall, a pair of rear side walls arranged to face each other at predetermined intervals, and a pair of rear side walls perpendicular to the opposite direction. A rear block having a rear wall for connecting one end of the pair of rear side walls in the direction, a pair of intermediate side walls arranged to face each other at a predetermined interval, and the pair of intermediate side walls are connected to each other. An intermediate block having a connecting portion is provided, and the front block and the rear block are contacted by the other end of the pair of front side walls and the other end of the pair of rear side walls of the rear block. One or more between the other end of the pair of front side walls of the front block and the other end of the pair of rear side walls of the rear block. The distance between the front wall and the rear wall can be adjusted by inserting and connecting the pair of intermediate side walls of the intermediate block.

In the above configuration, the front block and the rear block may be blocks having the same shape and may be arranged upside down.

Further, in the above configuration, the front surface of the front wall of the front block may be split-shaped.

Further, according to the present invention, there is a fore-edge stop wall structure in which the fore-stop block units described in any of the above are stacked on a foundation in a required number of steps, and the front block is arranged on the frontmost side of each step and the rearmost. A rear block is arranged on the side, and an intermediate block is inserted between the front block and the rear block as necessary so that the length from the front wall to the rear wall of each step becomes a desired length. A fore-edge retaining wall structure characterized in that concrete is embedded in a cavity formed by the rear wall, the pair of front side walls, the pair of rear side walls, and the pair of intermediate side walls. Is provided.

According to the edge-stopping block unit of the present invention, workability at the construction site can be improved, the construction period can be shortened, and safety can be further improved.

It is a front view, a top view, and a right side view of the front block. It is a front view, a top view, and a right side view of an intermediate block. It is a front view, a top view, and a right side view of a rear block. It is a top view which shows the assembly example of the edge stop block unit. It is a vertical cross-sectional view which shows an example of the edge stop wall structure using the edge stop block unit of this invention.

Hereinafter, the edge-stopping block unit according to the present invention (hereinafter, may be referred to as a “block unit”) will be described in detail with reference to the drawings. The present invention is not limited to these embodiments.

(Previous block)
1A, 1B, and 1C show a front view, a top view, and a right side view of the front block 1 of the block unit U according to the present invention. In this specification, the "front-back direction", "horizontal direction", and "vertical direction" refer to the directions shown in the drawings.

The front block 1 shown in FIG. 1 has a pair of side walls 12 and 13 arranged to face each other at predetermined intervals in the left-right direction, and a pair of front walls 11 connecting the front ends of the side walls 12 and 13 to each other. The side walls 12 and 13 and the front wall 11 are integrally formed of a concrete material. The upper end surface and the lower end surface of the pair of side walls 12, 13 and the front wall 11 are positioned on the same plane parallel to each other. Further, as shown in FIG. 1 (b), the facing inner wall surfaces 121 and 131 of the pair of side walls 12 and 13 are inclined in a direction away from each other in the rear direction. That is, each of the side walls 12 and 13 has a shape in which the thickness (length in the left-right direction) gradually decreases from the front side to the rear side. A groove portion 123 having a substantially semicircular horizontal cross section is continuously provided from the upper end to the lower end in the central portion of the rear end surface 122 of one side wall 12 in the left-right direction. Further, a ridge 133 having a substantially semicircular horizontal cross section is continuously provided from the upper end to the lower end at the central portion of the rear end surface 132 of the other side wall 13 in the left-right direction. The inner shape of the groove portion 123 and the outer shape of the ridge 133 have substantially the same shape and can be engaged with each other. As will be described later, when connecting the front block 1 and the rear block 2 or the intermediate block 3 in the front-rear direction, positioning is easy by connecting the groove portions 123 formed on the side walls 12 and 13 and the ridges 133. At the same time, it is possible to connect the blocks in the front-rear direction without a gap.

The front surface 111 of the front wall 11 has a split shape. By making the front surface 111 split, an accidental difference in brightness (gradation) appears, and the natural and natural color change seen in natural stones, instead of the single color of the conventional edge-stopping wall, is seen. It will be realized. In order to make the front surface 111 of the front wall 11 into such a split shape, for example, two blocks in which the front walls 11 are joined to each other are manufactured, and the center of the joint portion between the front walls 11 is in the vertical direction or / and the horizontal direction. It may be cut by applying an impact force with a blade-shaped member. As such a manufacturing method, the manufacturing method of JP-A-2000-3199008 can be used. Of course, the front surface 111 of the front wall 11 may be smooth or rough.

Such a front block 1 can be produced, for example, by pouring a concrete material into a mold having a groove shape in the shape of the front block 1 and vibrating compression, curing, and solidification. When the front surface 111 of the front wall 11 is split, a step of splitting the joined block in which the two blocks produced as described above are joined is added.

As the material of the front block 1, a concrete material obtained by mixing cement, water, fine aggregate, coarse aggregate, admixture, etc. in a predetermined ratio is preferably used.

The size and shape of the front block 1 are not particularly limited, but it is preferably square or rectangular in the front view from the structural necessity of stacking in the vertical direction. Further, considering the transportation by the operator, it is desirable that the weight is about 40 kg or less. From the viewpoint of such weight limitation and strength, the thickness (length in the front-rear direction) of the front wall 11 is preferably 25% or more and 35% with respect to the length in the front-rear direction of the front block 1. The thickness of the side walls 12 and 13 (length in the left-right direction) is preferably 20% or more and 30% or less with respect to the length in the left-right direction of the front block 1. In the front block 1 shown in FIG. 1, the left-right length is set to 300 mm, the top-bottom length is set to 280 mm, and the front-back length is set to 260 mm. The thickness of the front wall 11 (length in the front-rear direction) is set to 76 mm, and the maximum and minimum thicknesses of the side walls 12 and 13 are set to 84 mm and 63 mm.

(Intermediate block)
2A, 2B, and 2C show a front view, a top view, and a right side view of the intermediate block 3 of the block unit U according to the present invention.

The intermediate block 3 shown in FIG. 2 has a pair of side walls 31 and 32 arranged to face each other at predetermined intervals in the left-right direction, and a connecting portion 33 connecting the pair of side walls 31 and 32 in the center in the front-rear direction. , The pair of side walls 31 and 32 and the connecting portion 33 are integrally formed of a concrete material. As shown in FIG. 2A, the upper end surface 311 of the pair of side walls 31 and the upper end surface 321 of the side wall 32, and the lower end surface 312 of the side wall 31 and the lower end surface 322 of the side wall 32 are positioned on the same plane parallel to each other. Has been done.

A ridge 314 having a substantially semicircular horizontal cross section is continuously provided at the center of the front end surface 313 of the side wall 31 in the left-right direction from the upper end to the lower end, and at the center of the rear end surface 315 of the side wall 31 in the left-right direction. Grooves 316 having a substantially semicircular horizontal cross section are continuously provided from the upper end to the lower end.

A groove 324 having a substantially semicircular horizontal cross section is continuously provided from the upper end to the lower end at the center of the front end surface 323 of the other side wall 32 in the left-right direction, and is horizontal at the center of the rear end surface 325 of the side wall 32 in the left-right direction. The ridges 326 having a substantially semicircular cross section are continuously provided from the upper end to the lower end.

The outer shape of the ridges 314 and 326 and the inner shape of the groove portions 316 and 324 can be engaged with each other in substantially the same shape as the outer shape of the ridge 133 and the inner shape of the groove portion 123 of the front block 1. When connecting the intermediate block 3 and the front block 1, the intermediate block 3 and the rear block 2, and the intermediate block 3 in the front-rear direction, positioning is performed by connecting the ridges and grooves formed on the respective side walls. In addition to being easy, it is possible to connect the blocks in the front-rear direction without a gap.

The ridges 314, 326 and the grooves 316, 324 provided on both end faces of the pair of side walls 31 and 32 of the intermediate block 3 in the front-rear direction have ridges on one of the front end surface and the rear end surface of one side wall and grooves on the other. It is desirable to provide a ridge on one of the end faces of the pair of side walls 31 and 32 facing each other in the left-right direction and a groove on the other. That is, in the top view of FIG. 2B, the ridges 314 and 326 and the groove portions 316 and 324 provided on both front and rear side surfaces of the pair of side walls 31 and 32 of the intermediate block 3 are the connecting portions 33 of the intermediate block 3. It is desirable to provide point symmetry centered on the center in the left-right direction and the front-back direction. As a result, even if the intermediate block 3 is reversed in the front-rear direction (rotated by 180 degrees), the shape becomes the same, and the assembly work of the block unit U at the construction site becomes easy. In the embodiment shown in FIG. 2, the ridges 314, 326 and the grooves 316, 324 are continuously provided from the upper end to the lower end, but the ridges 314, 326 and the grooves 316, 324 are provided intermittently. May be good. Alternatively, it may be in the form of engaging protrusions and engaging holes formed at predetermined intervals in the vertical direction.

The connecting portion 33 of the intermediate block 3 connects the side wall 31 and the side wall 32 at the center in the front-rear direction and above the center in the vertical direction. The upper surface 331 and the lower surface 332 of the connecting portion 33 have a substantially semicircular shape when viewed from the front. From the viewpoint of the strength of the intermediate block 3 and the filling property of the concrete to be loaded, which will be described later, the length Ls of the shortest vertical portion of the connecting portion 33 is 35% or more and 60% or less with respect to the vertical length of the side walls 31 and 32. Is preferable. Further, the length Ly of the connecting portion 33 in the front-rear direction is preferably 30% or more and 50% or less with respect to the length in the front-rear direction. The vertical position of the connecting portion 33 may be another position including the vertical central portion of the pair of side walls 31 and 32.

Similar to the front block 1, the intermediate block 3 having such a shape can be produced by pouring a concrete material into a formwork having a groove shape of the intermediate block 33, and vibrating compression, curing, and solidifying.

The horizontal and vertical lengths of the intermediate block 3 are set to be the same as the horizontal and vertical lengths of the front block 1 and the rear block 2. In this embodiment, the left-right length is 300 mm and the top-bottom length is 280 mm. On the other hand, the length of the intermediate block 3 in the front-rear direction may be appropriately set, but it is desirable that the weight of the intermediate block 3 is about 40 kg or less in consideration of transportation by an operator as in the case of the front block 1. Therefore, the length of the intermediate block 3 in the front-rear direction is preferably 300 mm or less, and in the present embodiment, the length in the front-rear direction is 250 mm. Two or more types of intermediate blocks 3 having different lengths in the front-rear direction may be prepared and used in combination as appropriate.

(Back block)
3A, 3B, and 3C show a front view, a top view, and a right side view of the rear block 2 of the block unit U according to the present invention.

The basic structure of the rear block 2 shown in FIG. 3 is a structure in which the front and rear of the front block 1 shown in FIG. 1 are reversed. That is, it has a pair of side walls 22 and 23 arranged to face each other at predetermined intervals in the left-right direction, and a rear wall 21 connecting the rear ends of the side walls 22 and 23 to each other. The wall 21 is integrally molded with a concrete material. The upper end surface and the lower end surface of the pair of side walls 22, 23 and the rear wall 21 are positioned on the same plane parallel to each other. Then, as shown in FIG. 3B, the pair of side walls 22 and 23 facing the inner walls 221,231 are inclined in a direction away from each other in the forward direction. That is, each of the side walls 22 and 23 has a shape in which the thickness (length in the left-right direction) gradually decreases from the rear side to the front side. At the center of the front end surface 222 of one side wall 22 in the left-right direction, ridges 223 having a substantially semicircular horizontal cross section are continuously provided from the upper end to the lower end. Further, a groove portion 233 having a substantially semicircular horizontal cross section is continuously provided from the upper end to the lower end in the central portion in the left-right direction of the front end surface 232 of the other side wall 23. The outer shape of the ridge 223 and the inner shape of the groove 233 have substantially the same shape and can be engaged with each other.

On the other hand, unlike the front surface 111 of the front wall 11 of the front block 1, the rear surface of the rear wall 21 of the rear block 2 does not need to be split. This is because the rear wall 21 is not exposed to the outside after the construction of the edge stop wall, and it is not necessary to consider the design. However, it is desirable that the rear block 2 has the same shape as the front block 1 and can be used as both the front block 1 and the rear block 2 by reversing the rear block 1 in the front-rear direction at the construction site. As a result, one type of block can be used as the front block 1 and the rear block 2, and the block manufacturing efficiency can be improved. It also improves workability at the construction site.

Such a rear block 2 can be produced, for example, by pouring a concrete material into a formwork having a groove shape in the shape of the rear block 2, vibrating compression, curing, and solidifying, and the size of the rear block 2 and the size of the rear block 2. The shape is basically the same as that of the front block 1.

(Assembly of edge stop block unit)
FIG. 4 shows an assembled top view of the edge stop block unit U. In the assembly example shown in FIG. 4, the front block 1 is also used as the rear block 2.

The assembly example of the block unit U1 shown in FIG. 4A is an assembly example in the case where the block unit U1 is the shortest in the front-rear direction, and the front block 1 and the rear block 2 are connected in the front-rear direction. Specifically, the groove portions 123 and the ridges 133 formed on the rear end surfaces 122 and 132 of the pair of side walls 12 and 13 of the front block 1 and the front end surfaces 222 and 232 of the pair of side walls 22 and 23 of the rear block 2 The formed ridges 223 and groove portions 233 are engaged with each other so that the rear end surfaces 122 and 132 of the side walls 12 and 13 of the front block 1 and the front end surfaces 222 and 232 of the side walls 22 and 23 of the rear block 2 come into contact with each other. Is connected to. At this time, the upper end surface and the lower end surface of the front block 1 and the rear block 2 are positioned on the same plane parallel to each other. By connecting the front block 1 and the rear block 2 in this way, the cavity 41 is formed by the front wall 11, the rear wall 21, the pair of side walls 12, 13 and the pair of side walls 22, 23. NS. As will be described later, concrete is embedded in the cavity 41 after the block unit U1 is assembled.

The assembly example of the block unit U2 shown in FIG. 4B is an assembly example in which one intermediate block 3 is inserted between the front block 1 and the rear block 2. Specifically, the groove portions 123 and the ridges 133 formed on the rear end surfaces 122 and 132 of the pair of side walls 12 and 13 of the front block 1 and the front end surfaces 313 and 323 of the pair of side walls 31 and 32 of the intermediate block 3 The formed ridges 314 and groove 324 are engaged with each other so that the rear end surfaces 122 and 132 of the side walls 12 and 13 of the front block 1 and the front end surfaces 313 and 323 of the side walls 31 and 32 of the intermediate block 3 come into contact with each other. Connect to. Further, the grooves 316 and the protrusions 326 formed on the rear end surfaces 315 and 325 of the pair of side walls 31 and 32 of the intermediate block 3 and the protrusions 222 and 232 formed on the front end surfaces 222 and 232 of the pair of side walls 22 and 23 of the rear block 2 are formed. The strip 223 and the groove 233 are engaged with each other, and the rear end surfaces 315 and 325 of the side walls 31 and 32 of the intermediate block 3 and the front end surfaces 222 and 232 of the side walls 22 and 23 of the rear block 2 are connected so as to be in contact with each other. At this time, the upper end surface and the lower end surface of the front block 1, the intermediate block 3, and the rear block 2 are positioned on the same plane parallel to each other. By connecting the front block 1, the intermediate block 3, and the rear block 2 in this way, a hollow portion 42 is formed by the front wall 11, the connecting portion 33, and the pair of side walls 12 and 13, and the rear wall is also formed. The cavity 43 is formed by the 21, the connecting portion 33, and the pair of side walls 22 and 23. Concrete is embedded in these cavities 42 and 43 after the block unit U2 is assembled.

FIG. 4C is an assembly example in which a plurality of intermediate blocks 3a, 3b ... Are inserted between the front block 1 and the rear block 2. By inserting and connecting desired intermediate blocks 3a, 3b ... Between the front block 1 and the rear block 2, the length of the edge stop block unit U3 in the front-rear direction can be adjusted.

Since the connection between the front block 1 and the intermediate block 3 and the connection between the intermediate block 3 and the rear block 2 are the same as described above, the description thereof will be omitted here, and the connection between the intermediate blocks 3a and 3b will be described below.

Grooves 316a and ridges 326a formed on the rear end surfaces 315a and 325a of the pair of side walls 31a and 32a of the intermediate block 3a on the front side in the front-rear direction, and the front end surfaces of the pair of side walls 31b and 32b of the intermediate block 3b on the rear side in the front-rear direction. The ridges 314b and the groove 324b formed on the 313b and 323b are engaged with each other, and the rear end surfaces 315a and 325a of the front intermediate block 3a and the front ends of the side walls 31b and 32b of the rear intermediate block 3b are engaged with each other. The surfaces 313b and 323b are connected so as to be in contact with each other. At this time, the upper end surfaces and the lower end surfaces of the two intermediate blocks 3a and 3b are positioned on the same plane parallel to each other. By connecting the intermediate blocks 3a and 3b in this way, the connecting portion 33a of the intermediate block 3a, the connecting portion 33b of the intermediate block 3b, the pair of side walls 31a and 32a, and the pair of side walls 31b and 32b are hollow. Part 44 is formed. Concrete is embedded in the cavity 44 after the block unit U3 is assembled.

(Small wall)
FIG. 5 shows a vertical cross-sectional view showing an example of a fore-edge stop wall structure using the block unit U of the present invention. The edge stop wall W shown in FIG. 5 has a structure in which the block unit U of the present invention is stacked in a required number of stages on a foundation block 6 installed on the foundation ground. The foundation block 6 has a top surface 61 inclined at a predetermined angle with respect to a horizontal plane, and block units U are stacked on the top surface 61 by a required number of steps to form a fore-edge stop wall W. Each step of the edge stop wall W is composed of each block unit U, and the gradient θ of the edge stop wall W is controlled by the inclination angle of the top surface 61 of the foundation block 6.

Since the slope θ of the edge stop wall W is usually larger than the slope of the ground, the length of the block unit U constituting each stage of the edge stop wall W in the front-rear direction is shorter in the upper stage than in the lower stage. In the edge stop wall structure using the block unit U of the present invention, a desired number (including zeros) of intermediate blocks 3 can be inserted between the front block 1 and the rear block 2, so that the edge stop wall W is configured. The length of the block unit U in each stage can be adjusted in the front-rear direction. Moreover, the block unit U of the present invention requires a minimum of three types of blocks, and more realistically, if the front block 1 and the rear block 2 are common blocks, a minimum of two types of blocks are sufficient, and in terms of block production efficiency and construction site. Workability can be improved.

The construction procedure of the edge stop wall W will be described. First, the ground is excavated to create a foundation, and the foundation block 6 is installed on the upper surface of the foundation. As described above, since the gradient θ of the edge stop walls W to be stacked is determined by the inclination angle of the top surface 61 of the foundation block 6, the foundation block 6 is selected and determined so that the gradient θ of the edge stop wall W becomes a desired gradient. Next, each stage is formed in order using the block unit U of the present invention. Specifically, the front block 1 is arranged on the frontmost side of each step, the rear block 2 is arranged on the rearmost side, and the length from the front wall 11 to the rear wall 21 of each step becomes a desired length. An intermediate block 3 is appropriately inserted between the front block 1 and the rear block 2.

Next, concrete is poured into the hollow portions 41 to 44 (shown in FIG. 4) of the stacked block units U, and the concrete is cured and solidified to form a body-filled concrete. Since the upper and lower surfaces of the cavities 41 to 44 formed in the block unit U are open, the cavities 41 to 44 located above and below communicate with each other, and the concrete is opened in the cavity of the upper block unit U. If it is poured from, the cavity of the lower block unit U is filled. From the viewpoint of smoothly filling the respective cavities 41 to 44 of the concrete poured into the cavities 41 to 44, it is preferable to vibrate the concrete by using a conventionally known vibrating means.

The retaining wall (not shown) to be stacked between the edge retaining wall W and the edge retaining wall W can be formed by a conventionally known stacking method such as valley stacking or cloth stacking using conventionally known blocks. The retaining wall may be formed after the edge retaining wall W is completed, or may be stacked to the height when the edge retaining wall W is stacked to a certain height.

(others)
In the embodiment described above, the front block 1, the rear block 2, and the intermediate block 3 are each of one type, but each block may be of two or more types. For example, intermediate blocks having different lengths in the front-rear direction may be prepared so that they can be appropriately selected and used at the construction site.

Further, in order to facilitate the positioning of the blocks located above and below when the block units U are stacked, the upper end surface and the lower end surface of each block may be provided with mutually engaging portions such as convex portions and concave portions. That is, when stacking the blocks, the engaging portion formed on the lower end surface of the upper block is engaged with the engaging portion formed on the upper end surface of the lower block to position the upper block. You may.

In addition, when a space is created between the rear wall of the fore-edge retaining wall and the surface of the ground, it is desirable to fill the space with backfill concrete or backfill material.

According to the edge-stopping block unit of the present invention, workability at the construction site can be improved, the construction period can be shortened, and safety can be further improved.

1 Front block 2 Rear block 3 Intermediate block 11 Front wall 111 Front 12, 13 Front side wall 21 Rear wall 22, 23 Rear side wall 31, 32 Intermediate side wall 33 Connection part 41-44 Cavity part U, U1 to U3 Edge stop block unit W edge stop wall

Claims (4)

It has a pair of front side walls arranged to face each other at predetermined intervals, and a front wall connecting one end of the pair of front side walls in a direction perpendicular to the opposite direction of the pair of front side walls. With the previous block,
A pair of rear side walls arranged to face each other at predetermined intervals, and a rear wall connecting one end of the pair of rear side walls in a direction perpendicular to the opposite direction of the pair of rear side walls. And after the block,
An intermediate block having a pair of intermediate side walls arranged to face each other at predetermined intervals and a connecting portion connecting the pair of intermediate side walls.
With
The intermediate block is formed by integrally molding the pair of intermediate side walls and the connecting portion.
The length of the shortest vertical portion of the connecting portion of the intermediate block is 35% or more and 60% or less of the vertical length of the pair of intermediate side walls.
The front block and the rear block are connected so that the other end of the pair of front side walls and the other end of the pair of rear side walls of the rear block are in contact with each other.
Or, between the other end of the pair of front side walls of the front block and the other end of the pair of rear side walls of the rear block, the pair of one or more intermediate blocks. Insert and connect the middle side wall,
A fore-edge stop block unit characterized in that the distance between the front wall and the rear wall can be adjusted accordingly. The edge-stopping block unit according to claim 1, wherein the front block and the rear block are blocks having the same shape and can be arranged upside down. The edge-stopping block unit according to claim 1 or 2, wherein the front surface of the front wall of the front block is split. A fore-stop wall structure in which the fore-stop block units according to any one of claims 1 to 3 are stacked on a foundation in a required number of stages.
The front block is arranged on the frontmost side of each step, the rear block is placed on the rearmost side, and the front block and the rear block are arranged so that the length from the front wall to the rear wall of each step becomes a desired length. An intermediate block is inserted between them as needed,
It is characterized in that concrete is embedded in a cavity formed by the front wall, the rear wall, the pair of front side walls, the pair of rear side walls, and the pair of intermediate side walls. Edge stop wall structure.

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