JPH09316895A - Concrete made large block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily build a weir levee or a retaining wall by connecting the side faces of the counterfort of the upper and lower stage blocks to each other by a connecting member. SOLUTION: Connecting bolts 21 are put through and fixed in a horizontal direction in two counterforts 11L and 11R protruded from the left and right of the back surface of a surface plate part 10 to a rear side. A connecting member 22 connected to an upper stage block is attached to one end part of each bolt 21 and a connecting member 23 connected to a lower stage block is attached to the other end part, each by a nut 24. By repeating arraying of the upper stage block on the lower stage block array by shifting 1/2 of the block horizontal width and in a manner of broken joint piling, these blocks are alternately connected each other by the connecting members 22 and 23. Further, for each piling of one stage of a block array or a plurality of stages, a back filling material 26 such as freshly mixed concrete is filled with between it and an earth layer 17 and a weir levee or a retaining wall having a required height is built. Thus, a weir levee or a retaining wall having a height of, for example 20m or higher, is easily built.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a laterally long rectangular face plate portion on the left and right, and a top plate portion arranged on the lower stage is displaced by 1/2 of the lateral width to arrange the upper face plate portion. The present invention relates to a large gravity concrete block that is stacked in multiple stages to construct dams such as dams and retaining walls for retaining soil.

[0002]

2. Description of the Related Art Japanese Utility Model Publication 58-3872 and Japanese Patent Publication 6
According to Japanese Patent Laid-Open No. 2-28245, in order to construct a dam or a retaining wall by stacking the upper face plate portion in multiple stages on the lower horizontally long rectangular face plate portion at the break joint as described above, a horizontally long rectangular face plate portion is provided to the left and right. , At right angles to the face plate portion centering on a position ¼ "lateral width of the face plate portion inward from the left and right side edges of the face plate portion, and at the same height as the face plate portion, integrated with the back face of the face plate portion. A large concrete block having two rear facing walls is known. The publicly known block has a total of four vertical reinforcing bar through holes at the rear end portions of the left and right retaining walls and at the positions where the left and right retaining walls of the face plate portion project rearward. The above four reinforcing bar through-holes are fitted from the upper end to predetermined reinforcing bars for the four trees standing from the foundation of the wall, and the blocks are lowered along the reinforcing bars and piled up at multiple joints at multiple joints.

[0003]

Generally, the height of the blocks is about 75 cm, so for example, to stack 10 blocks, it is necessary to erect a reinforcing bar of 7.5 m in height from the foundation. It must be lifted for about 8.5 m and the lower ends of the four reinforcing bar through holes must be fitted to the upper ends of the four specified reinforcing bars. Each block weighs 800-900k
Even if a machine such as a crane is used for lifting, since it is a heavy object, it is very difficult to fit the lower ends of the four reinforcing bar through holes of the suspended block exactly to the upper ends of the four specified reinforcing bars. It takes time and labor. Especially, even if four rebars are placed upright from the foundation by aligning the four rebars with the through holes for the four blocks, if the height of the rebar is 7.5m, the upper part of the rebar sways and shakes four. Since each upper end of each rebar is displaced from the position of the four rebar through holes of the block, it is difficult to fit the four rebar through holes of the block forming the step below the dam or retaining wall into the rebar. Therefore, the construction efficiency of dams and retaining walls is extremely poor.

[0004]

Therefore, according to the present invention, for example, a block in the second stage from the bottom, a block in the first stage from the bottom, and a block in the third stage from the bottom.
Blocks arranged in a broken joint at the step are alternately connected by connecting members to be stacked in multiple stages to make it possible to easily construct a dam or a retaining wall having a height of 20 m. However, the problem of stacking up by using steel bars that have been raised from the foundation is solved.

[0005]

Therefore, the large block made of concrete according to claim 1 has a horizontally long rectangular face plate portion on the left and right,
From the left and right side edges of this face plate part, inwardly of the lateral width of the face plate part
In a large concrete block that has two rear facing walls that are perpendicular to the face plate centered at a distance of 4 inches and is integrated with the back face of the face plate, and is stacked in multiple stages at a tear joint, Connect the connecting bolts through the two retaining walls in the lateral direction, and attach the connecting member that connects to the upper block to one end of each bolt and the connecting member that connects to the lower block to the other end with nuts. It is characterized by having done. Further, the large concrete block of claim 2 is centered on a horizontally long rectangular face plate portion and a position which is inwardly separated from the left and right side edges of the face plate portion by 1/4 of the lateral width of the face plate portion. In a large concrete block that has two rear facing walls that are at right angles to the face plate and is integral with the back surface of the face plate, and is stacked in multiple steps at a tear joint, at the rear ends of the two left and right retaining walls. Fix the bolts that project backwards, and attach the connecting member that connects to the upper block to one bolt of the two left and right retaining walls, and the connecting member that connects to the lower block to the other retaining wall bolts with nuts. It is characterized by doing so. The large concrete block according to claim 3 has a horizontally long rectangular face plate portion, and a face plate portion centered on a position distant from the left and right side edges of the face plate portion inward by ¼ of the lateral width of the face plate portion. In a large concrete block that has two right and left rear facing walls that are at right angles to the rear surface of the face plate part and that is stacked in multiple steps at a tear joint, the center of the left and right back walls on the back face of the face plate part From the left and right, fix the connecting bolts to the left and right that project backwards at a position that is 1/8 of the lateral width of the face plate part, and connect the upper block to one of the two connecting bolts to the left and right. The connecting member for connecting to the lower block and the connecting member for connecting to the lower block are attached to the other by nuts. In any of the large concrete blocks of claim 1, claim 2, and claim 3, lateral through holes having a diameter larger than the width of the connecting member can be formed in the two left and right retaining walls. preferable.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In each of the illustrated embodiments, 10 is a horizontally long rectangular face plate portion, and 11L and 11R are 1/4 of the lateral width W of the face plate portion from the left and right side edges L and R of the face plate portion. Two right and left units having a predetermined thickness centered on positions 11 'and 11' which are spaced apart from each other and having the same height H as the face plate portion and perpendicular to the face plate portion and integrated with the back surface 10b of the face plate portion. Shows a rear facing wall. As an example of the dimensions of each part, the lateral width W of the face plate portion 10 is 2 m, and therefore the lateral width W of the face plate portion is ¼ inward from the lateral width W.
Centers 11 ', 1 of the left and right retaining walls 11L, 11R
1'is a position 50 cm inward from the left and right side edges L, R of the face plate portion, the height H of the face plate portion and the left and right retaining walls 11L, 11R is 75 cm, and the rearward facing length of the left and right retaining walls is 30c
m, the width w ₁ of the base portion connected to the back surface of the face plate of each retaining wall is 2
0 cm, the width w ₂ of the rear end is 15 cm, the thickness of the face plate portion is 13 cm at the left and right side edges, the thickness of the portion where the left and right retaining walls are connected is 20 cm, and the thickness at the center is 17 cm. For this reason, the back surface 10b of the face plate portion, except for the portion where the retaining wall is connected,
As a whole, it has an inverted W-shaped inclined surface symmetrical with respect to the center to improve the strength of the face plate portion itself and the connection strength between the face plate portion and the left and right retaining walls. Of course, reinforcing bars are arranged inside the face plate and the left and right retaining walls. The surface 10a of the face plate portion may be formed of concrete, or a natural stone partially embedded in concrete may be exposed on the surface so as to be in harmony with the surrounding environment.

Further, one of the left and right side edges L and R of the face plate portion is provided with a vertical protrusion 12 and a groove 13 into which the above protrusion is fitted, and the other adjacent blocks on the same row are stacked. Fits the ridges 12 into the grooves 13 and engages with each other.
Further, the trapezoidal protrusions 14 are provided on one of the upper and lower sides of the bases of the left and right retaining walls 11L and 11R connected to the back surface of the face plate portion, and the groove-shaped recesses 15 into which the above-mentioned protrusions are fitted are traversed across the bases. Direction, and the protrusion 14 at the base of the left retaining wall 11L of the lower block piled up at the break joint is fitted into the concave portion 15 at the base of the right retaining wall 11R of the upper block so that they engage with each other. When blocks are torn and piled up at joints to construct a dam or retaining wall, the blocks are adjacent to each other on the left and right in the same row of each step in the vertical direction, and the blocks that are above and below the upper and lower steps. Have assembled scrums with each other to increase the stacking strength of dams and retaining walls. or,
The left and right retaining walls 11L and 11R are provided with through holes 16 in the horizontal direction in the vertical direction. The diameter of the through hole 16 is larger than the width of the connecting members 22 and 23, which will be described later, about 5 cm, for example, about 10 to 15 cm. 1 block at break joint
When filling the backfill material such as ready-mixed concrete into the back every time it is stacked in steps or several steps, the backfill material enters inside the through holes 16, 16 in the lateral direction to fill the holes, and this also builds up the dam. In addition to the strength of the connection between the retaining wall and the retaining wall and the soil layer behind it, the strength of the dam and retaining wall is improved.

The above-mentioned connecting members 22 and 23 connect the anchor standing from the foundation and the block of the first stage arranged on the anchor, or the upper stage such as the first stage and the second stage, the second stage and the third stage. For alternately connecting the lower block and the lower block, for example, it is preferable to use an iron flat bar having a thickness of 6 mm and a width of about 5 cm. The base anchor and the first block are connected. The length of the object is a little longer than 1/2 of the height of the block, and the length of the one connecting the upper block and the lower block is a little longer than the height of the block. In addition, the anchor that stands from the foundation is also an iron flat bar, and is welded to the reinforcing bar embedded in the foundation to stand from the top surface of the foundation.

FIG. 1 shows an embodiment of claim 1 in which the left and right rear facing walls 11L and 11R have a half height H.
Position (intermediate position between upper and lower through holes 16, 16)
A connecting member 22 for connecting and fixing the connecting bolts 21 in the lateral direction, and connecting one end of each connecting bolt, for example, the left end of the bolt protruding from the left side surface of each retaining wall to the connecting bolt of the upper block. A connecting member 23 that connects to the connecting bolt of the lower block at the right end of the bolt protruding from the right side surface.
Can be fixed with nuts 24 via washers 25, respectively. Incidentally, the connecting bolts 21 penetrating and fixed in the lateral direction on the left and right retaining walls may be embedded in the retaining wall and attached when molding the block, or the block may be molded so as to have a bolt insertion hole. After the molding, the bolt 21 may be fixed by penetrating the insertion hole.

The left and right rear facing walls 11L and 11R have a large width w ₁ at the base portion connected to the face plate portion and a small width w _{2 at} the rear end, whereby the side surfaces of each retaining wall face from the base portion to the rear end. Taper. Therefore, as shown in an enlarged view in FIG. 1C, the washer 25 fitted on each of the left and right ends of the connecting bolt 21 has a tapered surface opposite to the side surface of the retaining wall, and the tapered surface is It is preferable that the side wall of the retaining wall is applied and the taper of the side face is canceled so that each end of each connecting member 22 and 23 can be attached by a nut 24 perpendicularly to each end of the connecting bolt 21.

On the foundation 18 constructed by pouring ready-mixed concrete in front of the soil layer 17, as shown in FIGS. 1 (D) and 1 (E), the left and right backing blocks of the first block arranged in the left and right direction are arranged. An anchor 19 which is connected to the lower end of the connecting member 23 attached to the right end of the connecting bolt protruding from one side surface of the walls 11L and 11R, for example, the right side surface with a nut, is projected upward from a predetermined position. Therefore, the blocks of the first stage are adjacent to each other on the foundation 18 in the left-right direction, and are arranged while the protrusions 12 and the grooves 13 are engaged with each other.
The right end portion of the connecting bolt protruding from the right side surface of 11R and the anchor 19 standing from the upper surface of the foundation are connected via a connecting member 23 attached by a bolt, and the first-stage block array (I) is placed on the foundation. Fix it. Alternatively, the connecting member 23 may be embedded in the foundation and stood up to serve also as the anchor 19.

Next, 1/2 of the lateral width of the face plate portion is shifted on the array of the first stage blocks, and the second stage blocks are arrayed in the tear joint stacking, as shown in FIG. 1 (E). The left end of the connecting bolt protruding from the left side surface of the left retaining wall 11L of the eye block, the left end of the connecting bolt protruding from the left side surface of the right retaining wall 11R of the second block, and the first step The left end of the connecting bolt protruding from the left side surface of the right retaining wall 11R of the block and the left retaining wall 1 of the block adjacent to the right of the second stage
The left ends of the connecting bolts projecting from the left side surface of 1L are connected by connecting members 22 attached with nuts 24, respectively, and the array (II) of the second block is arranged on the array (I) of the first block. Fix it. Then, when the blocks in the third row are arranged at the joints on the arrangement of the blocks in the second row [the array (III) of the blocks in the third row is the same as the array (I) in the first row]. ] The right end portion of the connecting bolt protruding from the right side surface of the left retaining wall 11L of the second block, the right end portion of the connecting bolt protruding from the right side surface of the right retaining wall 11R of the third block, and The right end of the connecting bolt protruding from the right side of the right retaining wall of the second block and the right end of the connecting bolt protruding from the right side of the left retaining wall of the block adjacent to the third stage on the right side, respectively. The connection member 23 attached with the nut 24 is used for connection, and the arrangement (III) of the blocks in the third stage is fixed onto the arrangement (II) of the blocks in the second stage. This gives 1
The block of the second step and the block of the second step are alternately coupled by the connecting members 22 and 23, and the projecting portion 14 and the concave portion at the base of the retaining wall of the upper and lower blocks are connected. 15 fit together.

In this way, by arranging the blocks of the lower row by ½ of the horizontal width of the block, the blocks of the upper row are arranged in a broken joint, and the blocks of the lower row are repeatedly arranged. Left and right end walls 11L and 11R of the connecting bolts penetrating laterally in the lateral direction, and one of the two adjacent blocks of the upper step is the left end wall, the other is the right The corresponding end portions of the connecting bolts penetrating laterally through the retaining walls 11L and 11R are alternately connected by connecting members 22 and 23 attached by nuts, respectively, and the block arrangement is arranged in one step or in plurals. A backfill material 26 such as ready-mixed concrete may be filled between the soil layer 17 and the soil layer 17 to build a dam or retaining wall of a desired height. Since the diameter of the through hole 16 in the lateral direction provided in each retaining wall is larger than the width of the connecting members 22 and 23 as described above, the backfill material 26 wraps around the through hole 16, thereby As described above, it is possible to improve the bonding strength between the dam or retaining wall and the soil layer behind it, and at the same time, improve the stacking strength of the dam or retaining wall.

2 and 3 show an embodiment of claim 2,
Center 11 'of the left and right rear facing walls 11L, 11R,
A rearwardly projecting connecting bolt 21 is embedded and fixed at the center of the position of 1/2 of the height H at the rear end of 11 '. For example, for the connecting bolt projecting from the rear end of the left retaining wall 11L, , A connecting member 22 for connecting with a connecting bolt projecting from the rear end of the right retaining wall 11R of the upper block piled with tear joints, a connecting bolt protruding from the rear end of the right retaining wall 11R has a left side of the lower block The connecting member 23 connected to the connecting bolt protruding from the rear end of the retaining wall 11L can be fixed by the nut 24.

As shown in FIGS. 3 (A) and 3 (B), the foundation 18 constructed by pouring ready-mixed concrete in front of the soil layer 17 is located on the right side of the first block arranged in the left-right direction. An anchor 19 or a connecting member 23 also serving as an anchor, which is connected to a connecting bolt protruding from the rear end of the retaining wall 11R, is projected upward. Therefore, the first block is the base 18
Connection bolts 21 that are adjacent to each other in the left-right direction and that are arranged while engaging the protrusions 12 and the grooves 13 and project from the rear end of the left retaining wall 11R of each block, and the anchor 19 or the connection member that stands from the upper surface of the foundation. 23 is connected with a nut, and the array (I) of the first block is fixed on the foundation.

Next, on the array of the first-stage blocks, the second-stage blocks are arranged by shifting the lateral width of the face plate portion by ½, and the second-stage blocks are arranged.
The connecting bolts protruding from the rear end and the connecting bolts protruding from the rear end of the left retaining wall 11L of the second stage block are connected by connecting members 22 attached with nuts 24, respectively. The array (II) is fixed on the array (I) of the first block. Then, when the blocks in the third row are arranged at the joints on the arrangement of the blocks in the second row [the array (III) of the blocks in the third row is the same as the array (I) in the first row]. ] A connecting member in which a connecting bolt protruding from the rear end of the right retaining wall of the second block and a connecting bolt protruding from the rear end of the left retaining wall of the third block are attached by nuts 24, respectively. 23, and the array (III) of the block in the third row is fixed on the array (II) of the block in the second row. As a result, the first block, the second block and the second block and the third block are alternately joined by the connecting members 22 and 23, and the protrusions at the base of the retaining walls of the upper and lower blocks. The part 14 and the recess 15 fit together.

In this way, arranging the blocks on the lower row by ½ of the width of the block and arranging the blocks on the upper row by tearing and loading the blocks repeatedly, and each block in the lower row is repeated. Connecting bolts protruding from one rear end of the left and right retaining walls 11L and 11R, and connecting bolts protruding from the rear ends of the other retaining walls of the two adjacent blocks in the upper step,
Each of them is alternately connected by connecting members 22 and 23 attached with nuts, and the backfill material 26 such as ready-mixed concrete is filled between the soil layer 17 and the soil layer 17 each time the blocks are stacked one step or a plurality of steps. Weirs and retaining walls of the required height can be constructed. The backfill material 26 wraps around the through hole 16 as in the case of claim 1, and as a result, as described above, the strength of the bond between the dam or retaining wall and the soil layer behind it is combined with the structure of the dam or retaining wall. The stacking strength can be improved.

4 and 5 show an embodiment of claim 3,
On the back surface of the face plate portion, two left and right rear facing walls 11L, 11
From the center 11 'of the R, 11' to the left and right, the width W of the face plate is 1
Connecting bolts 21 for the left and right two bolts projecting rearward at the center of 1/2 of the height H, which are / 8
L and 21R are embedded and fixed, left and right 2
One of the connecting bolts for the book, for example, the right one 21R, the connecting member 22 for connecting to the right one 21R of the connecting bolts for the two left and right connecting bolts on the back side of the upper block that is piled up with the tear joint, the lower connecting bolt 21L The connecting members 23, which are connected to the left connecting bolts 21L of the connecting bolts for the two right and left blocks of the block, can be fixed by the nuts 24 via the washers.

The back surface 10b of the block is the left and right retaining walls 11
Except for the connection with L and 11R, it is an inverted W-shaped inclined surface symmetrical with respect to the center as described above, and the left and right side edges L,
Since the thickness of R and the thickness of the center are different from each other, as shown in FIG. 4C, the rear surface 10b 'from each side edge L, R toward the base of the left and right retaining walls 11L, 11R and the left and right retaining walls. The inclination angles of the back surface 10b ″ from the base portion toward the center are different. Therefore, the washer 25L fitted to the left connecting bolt 21L for the left and right two and the washer 2 fitted to the right connecting bolt 21R.
Each of the 5Rs has an inclined surface opposite to the inclination angle of the back surface of the block and has a different thickness so as to cancel the inclination of the back surface and make the protruding surface from the back surface the same surface 25 '. It is preferable that each end of each connecting member 22, 23 is attached to the connecting bolts 21L, 21R with the nut 24 on the same plane 25 'and at a right angle.

As shown in FIGS. 5 (A) and 5 (B), the foundation 18 constructed by pouring ready-mixed concrete in front of the soil layer 17, as shown in FIGS. One of the left and right connecting bolts, and one of the right connecting bolts, for example, the anchor 19 that is connected to the lower end of the connecting member 23 that descends from the left connecting bolt 21L by a nut, or the connecting member 23 that also serves as this anchor is at a predetermined position. Embed in and project upward. Therefore, the first block is the basis 1
8 are adjacent to each other in the left-right direction, and are arranged while the protrusions 12 and the grooves 13 are engaged with each other, and stand from the top of the foundation and the left connecting bolts 21L of the connecting bolts for the left and right two on the rear surface of the face plate of each block Connect the anchor 19 (23) with the nut 24, and
The array (I) of the block in the tier is fixed on the foundation.

Next, the second-stage blocks are arranged on the first-stage block array by shifting the lateral width of the face plate portion by 1/2, and the second-stage blocks are arranged, and the left and right sides of the back surface of the first-stage block are arranged. Right connecting bolt 21R of the connecting bolts to the left and right of
And the right connecting bolt 21R of the two connecting bolts on the right side of the rear surface of the second block, and the right connecting bolt 2 of the two connecting bolts on the left side of the rear surface of the block adjacent on the right of the second step.
The 1Rs are connected by the connecting members 22 attached by the nuts 24, respectively, and the array (II) of the second block is fixed on the array of the first block (I). Then, when the blocks in the third row are arranged at the joints on the arrangement of the blocks in the second row [the array (III) of the blocks in the third row is the same as the array (I) in the first row]. ] The left and right connecting bolts 21L, 21L of the left and right connecting bolts on the rear surface of the second block and the left and right connecting bolts on the right side of the rear surface of the third block, respectively Left connecting bolt 21L,
And the left connecting bolts 21L of the left and right connecting bolts on the left side of the rear surface of the right adjacent block are connected by connecting members 23 attached by nuts 24, respectively, and the block arrangement (III) of the third step is set in two steps. Fix on the eye block array (II). As a result, the first block, the second block and the second block and the third block are alternately joined by the connecting members 22 and 23, and the protrusions at the base of the retaining walls of the upper and lower blocks. The part 14 and the recess 15 fit together.

In this way, by arranging the blocks of the lower row by ½ of the lateral width of the block, the blocks of the upper row are arranged in a broken joint, and the blocks of the lower row are repeatedly arranged. The left and right connecting bolts projecting from the left and right sides of the back of the block, and the left and right connecting bolts of the two projecting from the left and right sides of the backs of the adjacent blocks in the upper row are one of the left connecting bolts. , The other is the right connecting bolt comrades,
Each of them is alternately connected by connecting members 22 and 23 attached with nuts, and the backfill material 26 such as ready-mixed concrete is filled between the soil layer 17 and the soil layer 17 each time the blocks are stacked one step or a plurality of steps. Weirs and retaining walls of the required height can be constructed. The backfill material 2 is the same as in claims 1 and 2.
Reference numeral 6 wraps around the through hole 16, and as a result, as described above, it is possible to improve the bonding strength between the dam or retaining wall and the soil layer behind it, as well as the stacking strength of the dam or retaining wall.

In each of the first, second and third embodiments shown in the drawings, the mounting position of the connecting bolt 21 is 1/2 of the height of the retaining wall or face plate portion having the same height. It may be a predetermined position such as a position of 1/3 of the height or a position of 2/3 of the height from the bottom.

[0024]

As is clear from the above, according to the present invention, when a block or a retaining wall is constructed by stacking an array of blocks alternately by shifting the horizontal width of the block to 1/2, and constructing a dam or a retaining wall. According to No. 1, connecting bolts are attached to the left and right rear facing walls on the back side of the block so as to penetrate in the lateral direction.
The left side of the right retaining wall of the left block of the second stage, the left side of the right retaining wall of the same block of the first stage, and the left side of the left retaining wall of the right block of the second stage are respectively connected. Connect each end of the bolt with a connecting member that is attached with a nut, and the right side of the left retaining wall of the second block on the right and the right side of the right retaining wall of the third block on the left. , The right side of the right retaining wall of the same right block of the second stage and the right side of the left retaining wall of the right block of the third stage are connected with nuts at each end of the connecting bolts. In this way, the side walls of the retaining walls of the upper and lower blocks are alternately coupled by a coupling member in this way, and according to claim 2, using connecting bolts projecting from the rear ends of the left and right retaining walls on the back surface of the block, for example, Attach the rear end of the right retaining wall of the first block and the rear end of the left retaining wall of the second block to the connecting bolts with nuts. They are connected by a beam connecting member, and the rear end of the right retaining wall of the right block of the second stage, the rear end of the left retaining wall of the right block of the third stage, and the left block of the second stage The back wall of the right side wall and the rear end of the left side wall of the third block are connected by connecting members attached to the connecting bolts with nuts, respectively, thus connecting the back ends of the back walls of the upper and lower blocks. According to the third aspect of the present invention, the connecting bolts are connected alternately, and the left and right connecting bolts projecting from the left and right rear surfaces of the block centering on the left and right retaining walls are used. The right connecting bolt of the second connecting block is the right connecting bolt on the right side of the second block, and the right connecting bolt of the two connecting bolts is on the left side of the second block.
The connecting bolts on the right side of the connecting bolts are connected by connecting members attached with nuts, respectively, and the connecting bolts on the left side of the right and left two blocks of the right block on the second stage and the connecting bolt on the third stage Left connection bolt of the left and right connection bolts on the right side of the left block, and left and right 2 of the third block on the right side
Connect the connecting bolts on the left side of the connecting bolts for the books by connecting members attached with nuts, respectively, thus connecting the back surfaces of the upper block and the lower block alternately with the connecting members, and place them on top of the arrangement of the first block. Each time the blocks addressed to the first level are torn and piled up with joints, the connecting members can be alternately fixed with nuts to construct a dam or retaining wall. Therefore, it is extremely easy and efficient to construct a block or a retaining wall without using a formwork, regardless of the number of steps of stacking blocks, or with a height of 20 m or higher. It can be done and the construction period can be shortened.

[Brief description of drawings]

1 is an embodiment of the block of claim 1, (A) is a front view of one half of the block as seen from the front side and the other half as seen from the back side;
(B) is a side view, (C) is a partially enlarged plan view,
(D) is a side view of the constructed dam or retaining wall, and (E) is a front view of one part of the constructed dam or retaining wall as seen from the front side and the other half as seen from the back side.

FIG. 2 is an embodiment of the block according to claim 2, wherein (A) is a front view of one half of the block as seen from the front side and the other half as seen from the back side;
(B) is a side view, and (C) is a plan view.

FIG. 3 (A) is a side view of the dam or retaining wall constructed by the block of claim 2, (B) is a half of the constructed dam or retaining wall as seen from the front, and the other half as seen from the back. It is a front view.

FIG. 4 is an embodiment of the block according to claim 3, wherein (A) is a front view of one half of the block seen from the front side and the other half seen from the back side;
(B) is a side view and (C) is a partially enlarged plan view.

5 (A) is a side view of the dam or retaining wall constructed by the block of claim 3, (B) is a view of one half of the constructed dam or retaining wall from the front surface, and the other half from the back surface. It is a front view.

[Explanation of symbols]

 10 Block face plate portion 11L Left retaining wall 11R Right retaining wall 12 Protrusions provided on one of the left and right side edges of the face plate portion 13 Recessed groove provided on the other of the left and right side edges of the face plate portion 14 Left and right retaining walls Protrusions provided on one of the upper and lower sides of the base of the base 15 Recesses provided on the other of the upper and lower bases of the left and right bases 16 Transverse through holes provided on the left and right bases 17 Earth layer 18 Foundation 19 Anchor 21 Connecting bolt 22 Connecting member 23 Connecting member 24 Nut 25 Washer 26 Backfilling material

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[Procedure amendment]

[Submission date] August 22, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

Therefore, the large block made of concrete according to claim 1 has a horizontally long rectangular face plate portion on the left and right,
From the left and right side edges of this face plate part, inwardly of the lateral width of the face plate part
In a large concrete block that has two rear facing walls that are perpendicular to the face plate centered at a distance of 4 inches and is integrated with the back face of the face plate, and is stacked in multiple stages at a tear joint, Connect the connecting bolts through the two retaining walls in the lateral direction, and attach the connecting member that connects to the upper block to one end of each bolt and the connecting member that connects to the lower block to the other end with nuts. It is characterized by having done. Further, the large concrete block of claim 2 is centered on a horizontally long rectangular face plate portion and a position which is inwardly separated from the left and right side edges of the face plate portion by 1/4 of the lateral width of the face plate portion. In a large concrete block that has two right and left rear facing walls that are at right angles to the face plate portion and is integrated with the back surface of the face plate portion, and is stacked in multiple steps at a tear joint, the rear ends of the two left and right rear facing walls A bolt projecting rearward is fixed to one of the two parts, one of the two left and right retaining walls is connected with a connecting member that connects to the upper block, and the other retaining wall bolt is connected with a connecting member that is connected to the lower block. It is characterized in that it was installed in. The large concrete block according to claim 3 has a horizontally long rectangular face plate portion, and a face plate portion centered on a position distant from the left and right side edges of the face plate portion inward by ¼ of the lateral width of the face plate portion. In a large concrete block that has two right and left rear facing walls that are at right angles to the rear surface of the face plate part and that is stacked in multiple steps at a tear joint, the center of the left and right back walls on the back face of the face plate part From left to right, 1 / width of the face plate
Fixing the connecting bolts for the left and right two bolts protruding rearward at a distance of 8 inches, one of the connecting bolts for the two left and right bolts, the connecting member for connecting with the upper block, and the other with the lower block. The connecting members to be connected are each attached by a nut. And any of the large concrete blocks of claim 1, claim 2 and claim 3,
It is preferable to form a lateral through hole having a diameter larger than the width of the connecting member in the two left and right retaining walls.

Claims (4)

[Claims] 1. A laterally long rectangular face plate part, which is long in the left-right direction, and a right angle with respect to the face plate part centered at a position that is inwardly separated from the left and right side edges of the face plate part by 1/4 of the lateral width of the face plate part. In a large concrete block that has two left and right retaining walls that are integral with the back surface of the face plate and that is stacked in multiple stages at break joints, connecting bolts are laterally fixed through the two rearward facing retaining walls on the left and right, A large block made of concrete, characterized in that one end of each of the bolts is connected to the upper block by a connecting member, and the other end of the bolt is connected by a connecting member with the lower block. 2. A horizontally long rectangular face plate part, which is long in the left-right direction, and a right angle with respect to the face plate part centered at a position that is inwardly separated from the left and right side edges of the face plate part by 1/4 of the lateral width of the face plate part. In a large concrete block that has two left and right rear facing walls that are integrated with the back of the face plate and is stacked in multiple steps at a break joint, fix the rearward projecting bolts to the rear ends of the two left and right facing walls. , One of the two left and right retaining walls is connected with a connecting member for connecting to the upper block, and the other retaining wall is connected with a connecting member for connecting to the lower block with nuts. Large concrete block. 3. A laterally long rectangular face plate portion that is long to the left and right, and a right angle with respect to the face plate portion centered on a position that is inwardly separated from the left and right side edges of the face plate portion by 1/4 of the lateral width of the face plate portion. A large concrete block having two left and right rear facing walls that are integrated with the back surface of the face plate portion and stacked in multiple steps at a break joint. The face plate portion is located on the back side of the face plate portion from the center of the left and right holding walls to the left and right. Fix the rearwardly projecting connecting bolts to the left and right two at a position ⅛ of the lateral width of, and connect the connecting bolts to one of the left and right two connecting bolts to the upper block, and to the other Is a large concrete block characterized in that the connecting members for connecting to the lower block are each attached with a nut. 4. The large concrete block according to any one of claims 1 to 3, wherein the two left and right retaining walls have a diameter larger than the width of the upward connecting member or the downward connecting member. A large block made of concrete that has a horizontal through hole.