JP3211026B2 - Method for manufacturing concrete structure using L-shaped block, L-shaped block and pedestal thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a concrete structure using an L-shaped block for producing a concrete structure using a concrete secondary product such as an L-shaped block, an L-shaped block, and a pedestal. .

[0002]

2. Description of the Related Art Conventionally, when a concrete structure such as a sabo dam has been manufactured, a casting mold has been manufactured using an existing concrete secondary product. FIG. 14 shows a first conventional example in which the flat plate 1 is used as a secondary concrete product. The flat plate 1 is arranged along the outer lines on both sides of a concrete structure, and these are anchored or anchored. Fix with 2. Then, concrete 3 is cast between the flat plates 1 to form a lower concrete structure 4. Further, the flat plate 1 is similarly arranged on the lower concrete structure 4, and these are fixed by the anchor reinforcing bar or the anchor angle reinforcing bar 2, and the concrete 3 is cast, thereby forming the upper concrete structure. This is repeated to form the entire concrete structure.

FIG. 15 shows L as a secondary concrete product.
This shows a second conventional example using a mold block 5, in which an L-shaped block 5 is arranged in a horizontal state with a bottom surface portion 5a along an outline of both side portions of a concrete structure, and these are anchored with reinforcing bars or anchor angles. It is fixed by the reinforcing bar 2. Then, the concrete 3 is cast horizontally between the L-shaped blocks 5 to the height of the upper surface of the L-shaped blocks 5 to form the lower concrete structure 4. Further, an L-shaped block 5 is similarly arranged on the lower concrete structure 4, and these are fixed by anchor reinforcing bars or anchor angle reinforcing bars 2, and concrete 3 is cast to form an upper concrete structure. I have. This is repeated to form the entire concrete structure.

[0004]

In the above-mentioned first conventional example, since the flat plate 1 is unstable, a large number of anchor reinforcing bars or anchor angle reinforcing bars 2 must be used for fixing the flat plate. However, there is a problem that it is troublesome and expensive.

In the second conventional example, since the L-shaped block 5 is placed on the upper surface of the horizontal concrete 3,
If the slope of the side of the concrete structure changes,
It is necessary to prepare an L-shaped block having an inclination angle matching this inclination. Therefore, there is a problem that a plurality of types of L-type blocks are required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide one type of L-shaped block even for a concrete structure having a different side slope depending on a height position. An object of the present invention is to provide a method of manufacturing a concrete structure using an L-shaped block that can be formed by using the same, an L-shaped block, and a pedestal.

[0007]

According to a first aspect of the present invention, there is provided a method for manufacturing a concrete structure using an L-shaped block, comprising: a vertical portion; a horizontal portion provided horizontally from a lower end of the vertical portion; A method of forming a concrete structure using an L-shaped block comprising a spacing member attached to a lower surface of a concrete structure, characterized by comprising the following steps. (1) A step of installing a pedestal at a predetermined position on an installation surface. (2) A step of placing the vertical portion of the L-shaped block along the outline of the concrete structure, placing the lower end on the mounting surface of the pedestal, and placing the spacing member on the installation surface. (3) A step of casting concrete to a predetermined height inside the L-shaped block to form a lowermost concrete structure. (4) A step of placing an L-shaped block on the lowermost concrete structure so that the vertical portion follows the outline of the concrete structure. (5) A step of casting concrete to a predetermined height inside the L-shaped block to form a middle-stage concrete structure. (6) A step of repeating steps 4 and 5 to sequentially form a middle concrete structure. (7) Lastly, a step of placing an L-shaped block on the middle concrete structure so that the vertical portion follows the outline of the concrete structure. (8) A step of casting concrete to a predetermined height inside the L-shaped block to form a topmost concrete structure.

According to a second aspect of the present invention, there is provided a pedestal for mounting an L-shaped block for forming a formwork of a concrete structure, the pedestal being provided with a plurality of mounting surfaces fixed to an installation surface and having different inclinations on an upper surface portion, It is characterized in that a concrete pouring hole penetrating vertically is provided.

According to a third aspect of the present invention, the mounting surface of the pedestal is
It is characterized by being formed in a concave or convex shape.

[0010] A fourth aspect of the present invention, a L-shaped block for forming a mold of the concrete structure, a vertical portion, a horizontal portion having provided et Re solid Teiana horizontally from this lower end So that the lower surface of the horizontal portion surrounds the fixing hole.
It is characterized in that a spacing member is attached to the

According to a fifth aspect of the present invention, the concrete is
This is characterized in that the injection hole is provided.

According to a sixth aspect of the present invention, in the vertical portion of the L-shaped block, an arc-shaped fitting surface is formed at a lower end portion, and a fitting surface corresponding to the fitting surface is formed at an upper end portion. Has features.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment according to claims 1 and 2 of the present invention will be described below with reference to FIGS.
2 and 3, the pedestal 11 is a concrete structure 1
An L-shaped block 12 for forming a mold frame for molding a 0 is mounted thereon (see FIG. 1), and a plurality of, for example, three mounting portions 1 having different inclination angles at different heights are provided on the upper surface.
3 are formed. These mounting portions 13 are provided when the gradient of the outline of the concrete structure 10 is large (installation surface G
In the case where the intersection angle is large, the mounting portion 13 having a smaller height is used, and the mounting portion 13 having a larger height is used as the gradient becomes smaller. The pedestal 11 is formed with two concrete pouring holes 14 penetrating the upper and lower surfaces.

In FIG. 4 and FIG.
Is a commercially available concrete secondary product, and has a horizontal portion 16 having substantially the same width dimension in the horizontal direction from the lower end of the vertical portion 15. The angle between the vertical part 15 and the horizontal part 16 is about 90 degrees. A plurality of concrete pouring holes 17 are formed through the base end of the horizontal portion 16, and two fixing holes 18 are formed at the distal end. A spacing member 19 is formed on the lower surface of the horizontal portion 16 so as to surround the fixing hole 18. The bottom surface 19a of the spacing member 19 is formed in a spherical shape (see FIG. 5). The position of the spacing member 19 is not limited to the tip of the horizontal portion 16 but may be provided at an intermediate portion as long as the L-shaped block 12 can stably stand. Note that natural stones or the like may be provided on the outer surface of the vertical portion 15.

Next, a procedure for forming the concrete structure 10 will be described. That is, concrete structure 1
0 is divided into a plurality of parts in the height direction, a lower concrete structure 10A is formed first, then a middle concrete structure 10 is manufactured, and finally, an upper concrete structure 10 is manufactured. (1) First, the lower concrete structure 10A is manufactured. In FIG. 1, a pedestal 11 is placed on a mounting surface G by placing concrete 21, so-called stiffener. Concrete 2
1 is filled in the concrete injection hole 14 and the pedestal 11 is fixed.

(2) Next, the concrete structure 10A
The mounting portion 13 is selected according to the gradient of the outline of the L-shaped block 12, the lower end of the vertical portion 15 of the L-shaped block 12 is mounted on the mounting portion 13, and the installation surface G of the spacing member 19 is placed. Since the bottom surface 19a of the spacing member 19 has a spherical shape, the L-shaped block 12
Is stably mounted on the pedestal 11.

(3) Concrete 26 is cast inside the L-shaped block 12 to a predetermined height. The cast concrete 26 fills the lower surface of the L-shaped block 12 through the concrete injection hole 17 as shown by an arrow A in FIG. 5 and also fills the fixing hole 18 as shown by an arrow B. You. Since a sufficient space is provided on the lower surface of the horizontal portion 16 by the spacing member 19, the concrete 26 is filled around the pedestal 11 through the concrete pouring hole 14, and further, the lower surface of the horizontal portion 16 is filled without gaps. The pedestal 11 and the L-shaped block 12 are fixed.

The height of the upper surface of the concrete 26 is lower than the upper end surface of the L-shaped block 12 by the dimension H. This dimension is appropriately determined according to the gradient of the L-shaped block 12 placed on the upper part. When the concrete 26 hardens, the lowermost concrete structure 10A is formed. Before the concrete 26 hardens, the anchor bolts 22 for fixing the middle concrete structure 10B are pushed in.

(4) Next, a middle concrete structure 10B is formed. First, the L-shaped block 12 is placed on the lowermost concrete structure 10A, and the vertical portion 15 is made to follow the outline of the concrete structure 10.

As described above, since the dimension H between the upper end of the L-shaped block 12 and the concrete 26 is appropriately selected, the front ends of the L-shaped block 12 are aligned, and the spacing member 1 is formed.
When the concrete 9 is placed on the concrete 26, the vertical portions 15 are arranged along the outline of the concrete structure 10.
When the gradient of the outline is large (approaching the vertical line), the H dimension of the lower concrete structure 10A is set small, and when the gradient of the outline is small, the H dimension may be set large. .

Next, the anchor bolt 22 is inserted into the fixing hole 18, and the washer 23 and the abutment 24 are inserted into the anchor bolt 22. Since the lower surface of the abutment 24 is formed with a spherical seat, even if the crossing angle between the anchor bolt 22 and the L-shaped block 12 fluctuates, it is in contact with the washer 23 at a fixed position. When the nut 25 is screwed onto the anchor bolt 22, L
The mold block 12 is fixed.

The fixing device 20 includes an anchor bolt 22, a washer 23, a patch 24, and a nut 25.
In the above-described first embodiment, the applicator 24 and the nut 25 are formed separately, but they may be integrally connected to form the nut 25 having a spherical seat.

(5) Concrete is cast inside the L-shaped block 12 to a predetermined height. Concrete 26
Is cured, the middle concrete structure 10B is formed. Before the concrete 26 hardens, the anchor bolts 22 for fixing the upper concrete structure 10 are pushed in.

(6) The steps 4 and 5 are repeated to form the middle concrete structure 10B.

(7) Finally, the L-shaped block 12 is placed on the middle concrete structure 10B, and the vertical portion 15 is made to follow the outline of the concrete structure 10, and the L-shaped block 1
Fix 2 (8) Concrete 26 is cast inside the L-shaped block 12 up to the upper end to form the uppermost concrete structure 10
Form C.

In the first embodiment, natural stone is provided on the surface of the L-shaped block 12 or the L-shaped block 1
2 is formed on porous concrete, and plants are grown on the surface, whereby a multi-natural structure can be formed.

According to the first embodiment, the following effects can be obtained. 1, In forming the concrete structure 10 of each layer,
By adjusting the casting height (H dimension) of the concrete 26 with respect to the position of the upper end of the L-shaped block 12, the inclination of the vertical portion 15 of the L-shaped block 12 can be adjusted.
Since the slope can be adjusted to zero, even concrete structures having different slopes depending on the height from the installation surface G can be manufactured using one type of L-shaped block 12.

2. Since the spacing member 19 is provided in the L-shaped block 12, the space formed on the lower surface of the L-shaped block 12 is reliably filled with the concrete 26 poured through the concrete pouring hole 17. 3. Since the concrete 26 is cast in the space formed by the spacing member 19 on the lower surface of the L-shaped block 12,
The so-called beveling in which the joint surface of concrete crosses the concrete structure can be prevented.

The spacing member is not limited to the spacing member 19 provided integrally with the L-shaped block 12, but may be formed separately from the L-shaped block 12 and attached to the lower surface of the horizontal portion 16. FIG.
Shows another embodiment configured separately from the L-shaped block 12, in which the spacing member 27 has a cylindrical shape, and one end surface 27a has a spherical shape. This spacing member 2
Reference numeral 7 denotes an anchor bolt 22 inserted into the center and attached to the L-shaped block 12 via the fixing device 20.

As shown in FIG. 1, the spacing member 27 may be attached to the L-shaped block 12 by contacting the spherical end surface 27a with the concrete 26. Alternatively, as shown in FIG. The spherical end surface 27 a may be attached to the L-shaped block 12 so as to abut the horizontal portion 16. In addition, 1
If one or more adjustment washers 28 are attached one after another,
The gradient of the mold block 12 can be finely adjusted.

FIG. 7 shows a second embodiment according to claims 1 to 4 of the present invention.
FIG. The difference from the first embodiment will be described. The pedestal 31 is for mounting an L-shaped block 32 for forming a mold for forming the concrete structure 30, and has a plurality of, for example, three mounting portions 33 having different inclination angles on the upper surface. Each mounting portion 33 is formed in a concave or convex shape corresponding to the fitting surface 34 of the L-shaped block 32.

The L-type block 32 differs from the L-type block 12 in the following points. That is, an arc-shaped fitting surface 34 is formed at the lower end of the vertical portion 15 and protrudes downward from the horizontal portion 16. At the upper end of the vertical portion 15, a concave surface 35 is formed as a fitting surface corresponding to the fitting surface 34. The fitting surface formed at the lower end of the vertical portion 15 may be formed in a concave shape, and the fitted surface at the upper end of the vertical portion 15 may be formed in a convex shape.

In the second embodiment, similarly to the first embodiment, (1) First, concrete 21, so-called stiffener, is cast on the installation surface G, and the pedestal 31 is fixed.

(2) Next, the concrete structure 30A
The mounting portion 33 is selected according to the gradient of the contour line, and the fitting surface 34 of the L-shaped block 12 is mounted on the mounting portion 33, and the installation surface G is provided with the spacing member 19.

(3) Concrete 26 is cast inside the L-shaped block 12 to a predetermined height. Concrete 26
Is cured, the lowermost concrete structure 30A is formed. Before the concrete 26 hardens, the anchor bolts 22 for fixing the middle concrete structure 30B are formed.
Press down.

(4) Next, a middle concrete structure 10B is formed. First, the fitting surface 34 of the upper L-shaped block 32 is placed on the concave surface 35 of the L-shaped block 32 of the lowermost concrete structure 30A, and the spacing member 19 is placed on the concrete 26. Fitting surface 3 of upper L-shaped block 32
4 fits into the concave surface 35, so that the front and rear positions of the L-shaped block 32 can be easily set. And the vertical part 15 is arrange | positioned along the outline of the concrete structure 30. FIG. Then, as described above, the L-shaped block 12 is fixed by the fixing device 20.

(5) Concrete is cast inside the L-shaped block 32 to a predetermined height. Concrete 26
Is cured, the middle concrete structure 30B is formed. Before the concrete 26 is hardened, the anchor bolts 22 for fixing the upper concrete structure 30 are pushed in.

(6) The steps 4 and 5 are repeated to sequentially form the middle concrete structure 30B.

(7) Finally, the L-shaped block 32 is placed on the middle concrete structure 30B, the vertical portion 15 is made to follow the outline of the concrete structure 10, and the L-shaped block 3
Fix 2 (8) The concrete 26 is cast inside the L-shaped block 32 up to the upper end to form the uppermost concrete structure 30.
Form C.

According to the second embodiment, in addition to the effects of the first embodiment, when the L-shaped blocks 32 are stacked, the fitting surface 34 is fitted to the concave surface 35, so that the L-shaped block There is an effect that the position before and after 32 can be easily set.

FIGS. 8 and 9 show a third embodiment according to claims 1 to 3 of the present invention. L-shaped block 41
Is composed of a vertical portion 15 and a plurality of, for example, two legs 42 as horizontal portions provided in the horizontal direction from the lower end of the vertical portion 15. The legs 42 are arranged in parallel with an interval therebetween, and are used as an injection path for the concrete 26 cast between the legs 42.

In recent years, a concrete structure 10 having reinforcing bars 43 provided in the vertical and horizontal directions has been used. Since the L-shaped block 41 allows two legs 42 to be inserted between the reinforcing bars 43, it can be applied to a concrete structure using the reinforcing bars 43.

In the L-shaped block 41, if the lower end of the vertical portion 15 is provided with an arcuate fitting surface 34 and the upper end of the vertical portion 15 is provided with a concave surface 35, the second embodiment will be described. Can also be applied.

FIG. 10 shows a fourth embodiment of the L-shaped block 44 of the present invention. Two nuts 45 are embedded in the vertical portion 15 at a plurality of positions in the width direction. The leg portion 46 has an L-shape, and a bolt 47 is screwed onto the nut 45 to be detachably fixed to the vertical portion 15. The L-shaped block 44 selects the position of the nut 45 for fixing the leg 46 so as to reduce the distance between the two legs 46
An effect can be obtained if it can be appropriately adjusted according to the interval of 3.

FIGS. 11 and 12 show a fifth embodiment of the present invention.
FIG. 4 shows an example of an L-shaped block 50 , in which a vertical portion 15 includes:
A sliding rod 51 is provided in the width direction. Two legs 46
Is provided with an accommodating portion 52 having an open lateral end surface surrounding the sliding rod 51. The leg 46 is provided in the housing 52
Is inserted into the sliding rod 51 from the side, and is fixed by a bolt 47 at an appropriate position. And if you change the fixed position,
The distance between the legs 46 can be changed as appropriate.

FIG. 13 shows a sixth embodiment of the L-type block 55. The difference from the fifth embodiment is that
Are provided with two sliding rods 51 located at the top and bottom.
Is provided with two housing sections 52.

[0047]

According to the first aspect of the present invention, there is provided a method for manufacturing a concrete structure using an L-shaped block comprising a vertical portion, a horizontal portion, and a spacing member attached to the lower surface of the horizontal portion. Then, an L-shaped block is placed on the pedestal, the vertical portion thereof is made to follow the outline of the concrete structure, and concrete is cast to form a lowermost concrete structure. A vertical block along the outline of the concrete structure,
Cast concrete to form the middle concrete structure, and sequentially form the upper concrete structure,
If one type of L-shaped block is prepared, a concrete structure can be easily manufactured, and furthermore, there is an excellent effect that the edge of the concrete structure can be prevented.

According to a second or third aspect of the present invention, there is provided a pedestal on which an L-shaped block for forming a formwork of a concrete structure is mounted, wherein a plurality of mounting surfaces fixed to the installation surface and having different inclinations are provided on the upper surface. Since the concrete pouring holes are provided so as to penetrate the upper and lower portions, the vertical surface of the L-shaped block can be easily made to conform to the outline of the concrete structure.

The invention according to claims 4 and 5 is an L-shaped block for forming a formwork of a concrete structure, comprising a vertical portion and a concrete pouring hole and a fixing hole provided horizontally from the lower end thereof. Having a horizontal section, and below the horizontal section
Since the spacing member is attached to the surface so as to surround the fixing hole, a space can be secured on the lower surface of the horizontal portion, and concrete can be reliably filled into the lower surface of the L-shaped block from the concrete injection hole. It is effective.

According to a sixth aspect of the present invention, in the vertical portion of the L-shaped block, an arc-shaped fitting surface is formed at a lower end, and a fitting surface corresponding to the fitting surface is formed at an upper end. When the L-shaped blocks are stacked, the fitting surface is fitted to the concave surface,
This has the effect that the front and rear positions of the mold block can be easily determined.

[Brief description of the drawings]

FIG. 1 is a vertical side view of a first embodiment of the present invention.

FIG. 2 is a side view of a pedestal.

FIG. 3 is a plan view of a base.

FIG. 4 is a perspective view of an L-shaped block.

FIG. 5 is a diagram showing a state in which an L-shaped block is fixed.

FIG. 6 is a front view showing another embodiment of the spacing member.

FIG. 7 is a vertical sectional side view of a second embodiment of the present invention.

FIG. 8 is a vertical sectional side view of a third embodiment of the present invention.

FIG. 9 is a perspective view of a third embodiment of the L-shaped block.

FIG. 10 is a perspective view of a fourth embodiment of the L-shaped block.

FIG. 11 is a side view of a fifth embodiment of the L-shaped block.

FIG. 12 is a plan view of a fifth embodiment of the L-shaped block.

FIG. 13 is a side view of a sixth embodiment of the L-shaped block.

FIG. 14 is a side view showing a manufacturing process in the first conventional example.

FIG. 15 is a side view showing a manufacturing process in a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Concrete structure 11 Pedestal 12 L-shaped block 13 Placement part 14 Concrete pouring hole 15 Vertical part 16 Horizontal part 17 Concrete pouring hole 18 Fixing hole 19 Spacing member 27 Spacing member 30 Concrete structure 31 Pedestal 32 L-shaped block 33 Mounting Portion 34 Fitting surface 35 Concave surface 41 L-shaped block 42 Leg (horizontal portion) 44 L-shaped block 46 Leg (horizontal portion) 50 L-shaped block 51 Sliding rod 52 Housing portion 55 L-shaped block G Installation surface

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02B 7/02 E02D 17/20 103 E02D 29/02 305 E04B 2/02 E04C 1/39

Claims (6)

(57) [Claims] 1. A concrete structure is formed by using an L-shaped block including a vertical portion, a horizontal portion provided horizontally from a lower end of the vertical portion, and a spacing member attached to a lower surface of the horizontal portion. A method of manufacturing a concrete structure using an L-shaped block, comprising the following steps. (1) A step of installing a pedestal at a predetermined position on an installation surface. (2) A step of placing the vertical portion of the L-shaped block along the outline of the concrete structure, placing the lower end on the mounting surface of the pedestal, and placing the spacing member on the installation surface. (3) A step of casting concrete to a predetermined height inside the L-shaped block to form a lowermost concrete structure. (4) A step of placing an L-shaped block on the lowermost concrete structure so that the vertical portion follows the outline of the concrete structure. (5) A step of casting concrete to a predetermined height inside the L-shaped block to form a middle-stage concrete structure. (6) A step of repeating steps 4 and 5 to sequentially form a middle concrete structure. (7) Lastly, a step of placing an L-shaped block on the middle concrete structure so that the vertical portion follows the outline of the concrete structure. (8) A step of casting concrete to a predetermined height inside the L-shaped block to form a topmost concrete structure. 2. A pedestal on which an L-shaped block for forming a formwork of a concrete structure is mounted, comprising a plurality of mounting surfaces fixed to an installation surface and having different inclinations on an upper surface portion, and penetrating vertically. A pedestal provided with an injection hole. 3. The pedestal according to claim 2, wherein the mounting surface of the pedestal is formed in a concave or convex shape. 4. A L-shaped block for forming a mold of the concrete structure, a vertical portion, and a horizontal portion having provided et Re solid Teiana horizontally from this lower end, the water
A spacing member is attached to the lower surface of the flat part so as to surround the fixing hole.
L-type blocks, characterized by being. 5. A concrete injection hole is provided in a horizontal portion.
The L-shaped block according to claim 4, wherein
H. 6. The vertical portion of the L-shaped block has an arcuate fitting surface formed at a lower end portion, and a mating surface corresponding to the fitting surface is formed at an upper end portion. Item 4 or
5. The L-shaped block according to 5 .