JP2000110149A - Form device for concrete structural body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such a form device used for constructing a concrete structural body having firm structure with high efficiency as a form block main body is used for a permanent form to cast concrete when any of weir levee, river mouth barrage, breakwater, storm surgelevee, etc., specially width, height, slope, etc., constructs a continued concrete structural body in accordance with a place to be constructed. SOLUTION: A form block main body 1 constituted of a face plat section 1A contacted to the surface to be cast of concrete T and having required thickness and stay leg sections 1B and 1B is continuously constructed in the longitudinal direction X and, at the same time, it is piled up in a multistage state in the height direction Z. The stay leg sections capable of overlapping each other are connected with joint devices 2 in a state to make it possible to adjust binding strength and are built up, and the concrete T is cast and is used as a permanent form.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork device for a concrete structure, for example, a dam built up in a river, an estuary weir, a small dam, a seawall such as a breakwater or a storm surge built up on a shore, and furthermore. Is the width, height, etc.
When constructing a continuous concrete structure in which any of the slopes etc. differs depending on the laying place, concrete is cast by using the formwork block body that is assembled as a discarded formwork, making the structure robust with high work efficiency Best used to build concrete structures.

[0002]

2. Description of the Related Art Conventionally, in order to construct a weir so as to cross a river, firstly, civil works such as temporarily blocking a flow of a river or changing a flow path through a bypass are performed on a large scale. After deeply digging the riverbed at the place where the dam is to be built, formwork panels are assembled. Then, laying stones and the like on the riverbed, arranging reinforcing steel, and then pouring the concrete into a storage space surrounded by form panels made of ready-mixed concrete, thereby constructing a basic concrete part. Next, after assembling a number of form panels on the foundation concrete part, arranging the reinforcements, pouring fresh concrete, curing, solidifying, and then disassembling the form panels and peeling them off as a concrete structure. A dam was being built.

[0003]

According to the above-mentioned conventional method for constructing a river, first, in order to construct a foundation concrete part, civil works such as temporarily blocking a flow of a river or changing a flow path are performed. Formwork panels must be assembled to construct the foundation concrete section, and a large number of formwork panels must be constructed on the foundation concrete section to construct a dike as a concrete structure. It is necessary to assemble based on the design made in consideration of the site conditions such as the volume, the ground and the soil hardness, etc., and to arrange the reinforcing bars and then cast the ready-mixed concrete. Moreover, the width, upper surface or lower surface is not flat depending on the location of the embankment, such as a location built over the river bank, a location built on the river near the river bank, a location far from the river bank and near the center of the river, etc. Since it is a concrete structure with a complex shape with a complex shape with a different shape, such as being formed at a height or having a different installation gradient etc. in order to structurally secure strength, it is often used for work on formwork assembly It took time and effort, and the work efficiency was poor. In addition, after curing and solidification of the ready-mixed concrete, the formwork panel has to be disassembled and stripping work on the concrete structure is required, and stripping similarly requires much labor and time, resulting in poor workability. For this reason, the construction period becomes longer, construction costs,
Equipment costs have increased and manufacturing costs have also increased. Therefore, the present invention is intended to construct a concrete structure such as a weir or the like having a complicated and continuous external shape having a different shape such as a width, a height, and an installation gradient that differ depending on an installation site. In consideration of the above, it can be used as a discarding frame for concrete casting by assembling efficiently without requiring much labor in a short time, and the curing work of concrete and the peeling work after solidification are omitted, and the short construction period It is an object of the present invention to provide a concrete structure formwork device that can obtain a structurally robust concrete structure and has low construction costs and equipment costs.

[0004]

According to a first aspect of the present invention, a plurality of formwork block bodies are laid continuously in the longitudinal direction and stacked in multiple stages in the height direction. A face plate portion having a desired thickness in contact with the casting surface, a stay leg protruding in the cross direction on the outer surface of the face plate portion, and the stay legs that can be superimposed in the height direction are tightly connected. And a connecting means for adjusting the connection. The means is constructed by casting concrete with the form block body to be assembled as a disposable form.

According to a second aspect of the present invention, the two retaining legs of the form block main body are substantially parallel to the outer surface of the face plate at positions substantially 1 / 4L from the left and right side ends. A means characterized by being protruded is employed.

According to a third aspect of the present invention, there is provided a means according to the first or second aspect, wherein the form block main bodies are stacked on the base in a staggered lattice shape.

According to a fourth aspect of the present invention, there is provided the means according to any one of the first and second aspects, wherein a cavity is formed in the stay leg.

According to a fifth aspect of the present invention, in the first aspect, the connecting means is formed of a steel material or the like having a length substantially equal to the height of the stay leg, and is provided in an insertion hole provided in the height direction of the stay leg. A stay bolt to be inserted, and a coupler that is screwed into opposed threaded portions formed on the upper and lower protrusions of the stay bolt to continuously tighten the stay bolts in the height direction. Means were adopted.

According to a sixth aspect of the present invention, in the fifth aspect, the upper and lower projecting portions of the stay bolt are provided so as to project into an accommodating recess formed so as to be able to abut against the upper and lower surfaces of the stay leg. Means is adopted in which the projecting portions of the stay bolts are connected to each other by a coupler in the accommodation recess.

According to a seventh aspect of the present invention, in the fifth aspect, a means is adopted in which a plurality of insertion holes into which the stay bolts are inserted are formed in the stay leg at a desired interval.

According to an eighth aspect of the present invention, in any one of the first and second aspects, a convex ridge for joint is formed in a longitudinal direction on any one of an upper surface and a lower surface of the face plate portion. An upper surface or a lower surface of the mold block block body located at the upper or lower stage is formed with a joint concave portion into which the joint ridge portion is removably fitted. The means of being a feature was adopted.

According to a ninth aspect of the present invention, in any one of the first and second aspects, a guide pin is provided on one of the upper surface and the lower surface of the face plate portion, and the guide pin is provided on either the upper surface or the lower surface of the face plate portion. The other surface is provided with a correspondingly provided engagement hole in which the guide pin of the upper or lower mold block block body is formed so as to be removably fitted.

According to a tenth aspect of the present invention, in the third aspect, the base portion is a base block, and the base block is inserted into the insertion hole of the stay leg provided on the outer surface of the lowermost form block body. A means is adopted in which an anchor cylindrical body that engages the lower part of the stay bolt to be inserted is buried.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 19 show one embodiment of the present invention. In this embodiment, a case where the present invention is applied to a bank constructed as a concrete structure in a river will be described. Reference numeral 1 denotes a formwork block body that is continuously laid in the longitudinal direction X and stacked in multiple stages in the height direction Z. The formwork block body 1 is brought into contact with the casting surface of the concrete T to have a desired thickness t. A substantially rectangular face plate portion 1A shown in the width direction Y, stub legs 1B, 1B projecting in the cross direction (width direction Y) on the outer surface of the face plate portion 1A, and a height direction when stacked. The stay leg 1B that can be polymerized on Z,
Coupling means 2 for coupling each other to adjust their degree of tightness
It is constructed by placing concrete T using the form block body 1 to be assembled as a discard form. The form block body 1 is formed of concrete or synthetic resin. Also, in this embodiment, the form block body 1 typically shows a case of stacking in a staggered pattern as shown in FIG. 4, but the stacking method is not limited to this, and The form block bodies 1 may be stacked by so-called cloth stacking in which the frame block bodies 1 are superimposed and stacked. Formwork block body 1
Are stacked on the foundation blocks 3, 3 'as the foundation.

[0015] The stay leg 1B of the formwork block body 1,
As shown in FIG. 13 and FIG. 14, two 1Bs protrude substantially parallel to the outer surface of the face plate 1A at positions approximately 1 / 4L from the left and right side ends, and a cavity 4 is formed inside. As a result, the weight is reduced, and the transportation and construction of the formwork block body 1 are easily performed. As described above, the two retaining legs 1B, 1 are located at approximately 1 / 4L from the left and right side ends of the form block body 1.
B is projected substantially parallel to the lower mold block body 1
In the case of so-called laying in which the upper form block body 1 is superimposed and stacked on the upper form block body 1, the upper form block block body 1 is placed on the retaining legs 1B, 1B of the lower form block body 1. The stay leg portions 1B, 1B are sequentially superimposed and stacked. In addition, as shown in FIGS. 4 and 12, the upper mold block main body 1 is shifted from the lower mold block main body 1 by approximately 1/2 L of the length L of the longitudinal direction X thereof. When stacked in a staggered lattice pattern, the right side of the upper form block body 1 is placed on the retaining leg 1B formed at a position approximately 1 / 4L from the left side end of the lower form block body 1. Standing leg 1 formed approximately 1 / 4L from the end
B are stacked in agreement. The lower leg 1B formed at a position approximately 1 / 4L from the right side end of the lower form block body 1 has a position approximately 1 / 4L from the left side end of the form block body 1 stacked on the upper stage. Are formed. Numeral 5 is an insertion hole provided in the height direction Z of the stay legs 1B, 1B, and a plurality of the insertion holes 5 are provided in the stay legs 1B, 1B at a desired interval k in the width direction Y, for example, as shown in FIG. The stay bolts 6, 6; 6, 6 described below are inserted into the insertion holes 5, 5; 5, 5, respectively, as shown in FIG.

[0016] inserting the coupling means 2, for example steel, refrain leg 1B of stainless or the like, is formed at a height h substantially equal length l ₁ of 1B, which is provided ahead legs 1B, in the height direction Z of the 1B Stay bolts 6,6 inserted in the holes 5,5; 6,6
And threaded portions 6a ₁ , 6a formed on opposed protruding portions 6a, 6b above and below the stay bolts 6, 6;
6b ₁ and stay bolts 6 and 6;
Coupler 7 for continuously tightening each other in the height direction Z
Consists of Coupler 7 contour is square, hexagonal, octagonal, etc. are formed on the polygons, the inside of the stay bolts 6, 6; bolt holes 7a to be screwed in below the screw portion 6a ₁ of the 6,6, 6b ₁ Are formed above and below.

The upper and lower protruding portions 6a, 6b of the stay bolts 6, 6; 6, 6 are accommodated in receiving recesses 8a, 8b formed so as to be able to abut against the upper and lower surfaces of the stay legs 1B, 1B. It is protruded. The projecting portions 6a, 6b of the stay bolts 6, 6; 6, 6 are connected to each other by the coupler 7 in the receiving recesses 8a, 8b. This coupler 7
The stay bolts 6, 6; 6, 6 are turned in the height direction Z by being rotated clockwise or counterclockwise using a tool such as a spanner (not shown) having a holding portion. Tightening and the degree of tightness are adjusted. Tool such as a wrench is below the open end _{8a 1, 8b 1; 8a 1} , 8
receiving from b ₁ recess 8a, it is rotated manipulate couplers 7,7 clockwise or counterclockwise direction by being inserted into the 8b.

The receiving recesses 8a and 8b are provided with
Open ends 8a ₁ , 8b ₁ are provided outside 1B, for example, on opposite insides of the stay legs 1B, 1B. This open end 8a
_1, was provided 8b ₁ is, in order to smoothly perform the rotating operation of the coupler 7 by engaging a coupler 7 to the addition portion by inserting a wrench from the open end 8a _1, 8b ₁ And screw portions 6a ₁ , 6b ₁ ; 6a ₁ ,
6b ₁ with the square nut 9 screwed to the anchor plate 10
The housing recess 8a on the upper surface side of the formwork block body 1 through the
8b; for easy accommodation in 8a, 8b.

The base blocks 3, 3 'are made of concrete, and are provided with through holes 5, 5; 5, 5 provided in the retaining legs 1B, 1B on the outside (rear side) of the form block main body 1 to be stacked at the lowest stage. Stay bolts 6, 6 inserted into 5;
Screw portions 6b formed on lower projecting portions 6b, 6b
_1, the anchor cylinder 11, 11 to be screwed to 6b ₁ is embedded in the upper surface (16, 18, 19). Anchor wings 11a to be locked in the basic blocks 3, 3 'are formed on the anchor cylinders 11, 11 so that the anchor cylinder 1
Inadvertent rotation of 1 is regulated. Further, the upper surface of the basic block 3 ′ is formed on the basic block 3 formed on the flat surface 3 a as shown in FIG. 16 in order to determine the laying gradient θ of the form block body 1 stacked on the upper surface according to the laying place. The present invention is not limited to this, and one having an inclined surface 3'a having a desired gradient θ 'is also prepared.

Reference numeral 12a denotes a face plate portion 1A of the formwork block main body 1.
Is a convex ridge for joints formed in the longitudinal direction X on the upper surface or lower surface of the surface plate portion 1A in the figure, and the convex ridge portion 12a is provided on either the upper surface or the lower surface of the surface plate portion 1A. By fitting into the concave portion 12b formed corresponding to the lower surface of the face plate portion 1A in the drawing, the gap is formed between the form block main bodies 1 stacked in the height direction Z. In addition to preventing the occurrence, the positioning at the time of construction and the displacement movement of the form block main bodies 1 after stacking are prevented.

13a is a face plate portion 1A of the form block main body 1.
The guide pin 13 is provided on one of the upper surface or the lower surface of the front plate portion 1A, in the drawing, the upper surface of the face plate portion 1A.
“a” can be fitted into and disengaged from an engaging hole 13b provided on the upper surface or the lower surface of the face plate portion 1A of the form block main body 1 located at the upper or lower stage, so that the height direction Z is increased. The positioning of the form block bodies 1 to be stacked on each other at the time of construction and the displacement of the form block bodies 1 after stacking are prevented.

One embodiment of the present invention has the above configuration.
Build a weir in a river as a continuous concrete structure
Will be described below in the order of steps. First, the basics
Cross the river K through the foundation block 33 '
₁And downstream J_TwoIt is continuously laid almost in parallel with. This
Before laying the foundation blocks 3 and 3 'continuously,
Is slightly riverbank K if necessary₁And riverbed K_TwoDelve into
Laying and crushing stones (not shown)
Reinforce the ground, cast foundation concrete, etc.
A small-scale foundation work may be preliminarily performed.

At this time, the upstream J₁And downstream J_Two
And the basic blocks 3 and 3 'to be laid₁And below
Outflow side J_TwoAnd the riverbank K₁Will be laid on the riverbank K₁To
Is it built on a nearby river K, or on a riverbank K₁River far away
Will it be laid at a location near the center of River K, or
The width W of the dam as a concrete structure to be
Or the lower surface is not flat but different height H₁, H_Two, H_Three,
H_Four, H_Five, H₆, H ₇Or even rivers
Ensuring structural strength against water pressure and water volume of river K
From the viewpoint of different slopes 3'a
Select and use the one that is suitable for the
You.

[0024] upper surface of the thus base blocks 3,3 which several optionally upstream J ₁ and the downstream side J ₂ are laid in succession ', continuously lowermost mold block body 1 respectively Lay and assemble. To this end, insertion holes 5, 5 formed in retaining legs 1B, 1B formed in the cross direction (width direction Y) on the outer surface of the lowermost form block main body 1; 6 and 6, and the screw portion 6b below it
₁ , 6b ₁ ; 6b ₁ , 6b ₁ are screwed into anchor cylinders 11, 11; 11, 11 embedded in the flat surface 3a or the inclined surface 3'a of the upper surface of the basic blocks 3, 3 '.

[0025] Then, the mold block body 1, 1 (figure 2 stage to the upper surface of the lowermost mold block body 1,1 (shown in solid line in FIG. 12) between the upstream J ₁ and the downstream side J ₂ Twelve imaginary lines) are stacked in a staggered pattern in the longitudinal direction X with a phase difference of 1/2 L corresponding to substantially half of the length L of the frame block main body 1. At this time, of the retaining legs 1B, 1B provided outside the lowermost arbitrary form block main body 1 (shown as hatched in FIG. 12 for convenience), 1 / 4L from the left end.
The stay leg 1B provided at a position 1/4 L from the outer right end of the form block main bodies 1, 1 to be stacked in the second stage overlaps and is stacked on the stay leg 1B provided at the position.
Also, from the right end of the lowermost arbitrary form block main body 1, 1 /
1L from the left end of the adjacent form block main body 1 to be stacked on the second stage is attached to the stay leg 1B provided at the position of 4L.
Are overlapped and piled up.

[0026] Then, the optional
Insertion of stay legs 1B, 1B provided outside block body 1
Stay bolts 6, inserted into the through holes 5,5;
6; one of the protrusions 6a, 6a;
It was laid continuously in the longitudinal direction X on the second stage so as to match
From the right end or left end of adjacent formwork block bodies 1, 1
Insertion of stay legs 1B, 1B provided at approximately 1 / 4L position
Stay bolts 6, 6 inserted in through holes 5, 5;
6, 6 lower projections 6b, 6b;
Let Then, the lower leg of the lowermost form block body 1
1B, 1B insertion holes 5,5; stays inserted into 5,5
Bolts 6,6; Thread 6a above 6,6₁, 6a₁;
6a₁, 6a₁And the projections 6a, 6a; 6a, 6a
Stacked in the second row to match the
Provided on the right and left sides outside the block bodies 1 and 1
Inserted into the through holes 5,5 of the stay legs 1B, 1B.
Projecting portions 6b below the stay bolts 6,6;
6b; screw portion 6b of 6b, 6b ₁, 6b₁6b₁, 6
b₁Having bolt holes 7a, 7a into which screws are inserted.
-7 to open end 8a₁, 8b₁8a₁, 8b₁Insert from
Clockwise or counterclockwise using a spanner or similar tool
Tighten by rotating in the direction. At this time,
Tighten in the height direction Z by screwing or unscrewing -7
Turn bolts for stay bolts 6,6;
Quickly and surely adjusts with the knuckle operation and bottom
The second formwork stacked on the formwork block body 1
Fine adjustment of the mounting height of the block body 1 is performed.

Thereafter, a third L form block main body 1 is laid on the upper surface of the second form block main body 1 laid on the upstream side J ₁ or the downstream side J ₂ by a 1 / 2L phase. It is shifted in the direction X and stacked in a staggered pattern. And the retaining legs 1B, 1B; 1B, 1B of the second and third formwork block bodies 1, 1 stacked and stacked in the height direction Z.
Insertion holes 5 provided at a desired interval k in the width direction Y.
5; stay bolts 6, 6 to be inserted into the 5,5; screw portion 6a ₁ vertically of 6,6, 6b _1; the 6a _1, 6b couplers 7 and 7 are threaded into ₁ using a tool such as a spanner By rotating the stay bolts 6, 6 and 6, the stay bolts 6, 6 are tightly connected to each other and the degree of tightness is adjusted.

By repeatedly performing the above operation,
Riverside K as concrete structure₁Where it is built in
Riverbank K₁On the river K close to
K₁Considering site conditions such as places far away from the center of river K
In addition, the width of the dam to be constructed and the width
Or the height H is not uniform and the lower surface is flat₁, H_Two,
H _Three, H_Four, H_Five, H₆, H₇Are different or even
Structural strength depending on the water pressure and amount of water in river K
From bottom to top to secure the degree and outside
Considering the laying gradient θ, etc., which becomes tapered inward from
And the third and subsequent formwork block bodies 1 are connected to the second formwork block.
Pile up the lock body 1 in the desired number of staggered grids
You. And a copy of the formwork block body 1 to be stacked
Stay bolts 6, 6 inserted in legs 1B, 1B;
The height can be increased by rotating the couplers 7, 7
Tighten in direction Z and adjust the degree of tightness.

[0029] Katawaku block body of such is assembled to the desired several stages height direction Z to the number of times quickly and efficiently staggered without requiring to an upstream side J ₁ and the downstream side J ₂ Place concrete T between 1,1. Then, the assembled formwork block bodies 1, 1 are cured with concrete T,
Even after solidification, unlike the conventional method, it does not release,
It remains as a discarded form as it is attached to the outside of the concrete T. Then, a dam as a concrete structure is constructed. In addition, the formwork block bodies 1 and 1 left as a formwork form outside the concrete T protect the surface of the concrete structure against wind, rain, sunshine, scouring by water pressure, collision with earth and sand, driftwood, etc. I do. Moreover, the stay leg 1 provided on the outside of the face plate 1A in the form block main body 1.
B, 1B, stay bolts 6, 6; 6, 6, which are formed using steel or stainless steel, are inserted into insertion holes 5, 5; 5, 5 provided at a desired interval k in the width direction Y, Protrusions 6a, 6b provided above and below the coupler,
7, the stay bolts 6, 6; 6, 6 are integrated in the height direction Z, so that the assembled form block main bodies 1, 1 are in the longitudinal direction X, the width direction Y, and the height direction Z. A dam is constructed as a concrete structure that is structurally robust against tensile and compressive forces from any direction.

In the above description, a concrete structure including a bank built on a river has been described as a typical example. However, a concrete structure may be constructed on a river mouth weir or a small dam built at the mouth of a river, or built on a coast in addition to the above description. Breakwater,
It can be applied to seawalls such as storm surge embankments, and also to breakwaters, etc. It is most suitable for constructing continuous concrete structures whose width, height, slope, etc. differ depending on the installation site. You.

[0031]

As described above, according to the present invention, a large number of formwork blocks, which are continuously laid in the longitudinal direction and stacked in multiple stages in the height direction, are brought into contact with the concrete casting surface and have a desired thickness. Coupling means comprising a face plate portion having: and a stay leg projecting in the cross direction on the outer surface of the face plate portion, and connecting the stay legs, which can be superposed in the height direction, to each other so that the degree of tightness can be adjusted. In order to construct a concrete structure such as a weir that has a complex shape and a continuous shape with different widths, heights, and installation gradients depending on the installation site, many formwork block bodies are Considering the situation, it is possible to set up the work efficiently without requiring much labor in a short time. Moreover, the formwork block body assembled in this manner can be used as a discarding formwork for concrete casting, and can eliminate concrete curing and peeling work after solidification. And construction and equipment costs are low.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view showing one embodiment of a formwork apparatus for a concrete structure of the present invention.

FIG. 2 is an enlarged cross-sectional view showing a connection state between form panels.

FIG. 3 is an enlarged sectional view showing a tightened state of a stay bolt used in the present embodiment.

FIG. 4 is a front view showing the entire shadow of the concrete structure form device of the present invention applied to a bank.

FIG. 5 is an enlarged sectional view taken along the line AA of FIG. 4;

FIG. 6 is an enlarged sectional view taken along line BB of FIG. 4;

FIG. 7 is an enlarged sectional view taken along the line CC of FIG. 4;

FIG. 8 is an enlarged sectional view taken along the line DD of FIG. 4;

FIG. 9 is an enlarged sectional view taken along the line EE of FIG. 4;

FIG. 10 is an enlarged sectional view taken along line FF of FIG. 4;

FIG. 11 is an enlarged sectional view taken along the line GG of FIG. 4;

FIG. 12 is an enlarged plan view for explaining a laying state of a formwork block body used in the present embodiment.

FIG. 13 is an enlarged plan view showing an example of a formwork block body used in the present embodiment.

FIG. 14 is an enlarged front view of the form block body.

FIG. 15 is an explanatory enlarged cross-sectional view of the form block body.

FIG. 16 is a cross-sectional view illustrating an example of a basic block according to the present embodiment.

FIG. 17 is a front view showing another example of the basic block used in the present embodiment.

FIG. 18 is a plan view of the same.

FIG. 19 is a sectional view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Form frame block main body 1A Face plate part 1B Staying leg part 2 Connecting means 3 Basic block 3a Flat surface 3 'Basic block 3'a Inclined surface 5 Insertion hole 6 Stay bolt 6a Projection 6a ₁ screw 6b Projection 6b ₁ screw 7 Coupler k interval L length X longitudinal direction Y width direction Z height direction

Claims (10)

[Claims] 1. A large number of form block bodies are continuously laid in a longitudinal direction and stacked in multiple stages in a height direction.
The form block main body is in contact with a concrete casting surface and has a face plate portion having a desired thickness, a retaining leg portion protruding in the cross direction on an outer surface of the face plate portion, and A joining means for joining the staying legs to each other so as to adjust the degree of tightness, and forming a concrete structure body by casting concrete with the assembled form block body as a discarded formwork. 2. The stay leg of the form block main body is provided on the outer surface of the face plate portion at two positions substantially 1 / 4L from the left and right side ends thereof, and substantially protrudes substantially parallel thereto. 2. The formwork device for a concrete structure according to 1. 3. The concrete structure forming apparatus according to claim 1, wherein the forming block main bodies are stacked on the base portion in a staggered lattice shape. 4. The concrete structure formwork device according to claim 1, wherein a cavity is formed inside the stay leg. 5. A stay bolt formed of a steel material or the like having a length substantially equal to the height of the stay leg and inserted into an insertion hole provided in the height direction of the stay leg, and a stay bolt of the stay bolt. 2. A concrete structure formwork according to claim 1, comprising a coupler which is screwed into opposed screw portions formed on the upper and lower protrusions to continuously tighten the stay bolts in the height direction. apparatus. 6. The upper and lower projecting portions of the stay bolt protrude into receiving recesses formed so as to be able to abut against the upper surface and the lower surface of the stay leg, and in the receiving recess, the stay bolt is formed by a coupler. The formwork device of a concrete structure according to claim 5, wherein the protrusions are connected to each other. 7. The concrete frame forming apparatus according to claim 5, wherein a plurality of insertion holes through which the stay bolts are inserted are formed at desired intervals in the stay leg. 8. A mold having joint ridges formed in a longitudinal direction on one of an upper surface and a lower surface of the face plate portion, and an upper or lower mold located on the other upper surface or the lower surface of the face plate portion. The concrete structure according to any one of claims 1 to 2, wherein the joint ridge of the frame block main body is formed with a joint concave portion into which the joint ridge is removably fitted. Body formwork device. 9. A guide pin is provided on one of an upper surface and a lower surface of the face plate portion, and a guide pin of a form block main body located on the upper or lower stage is provided on either the upper surface or the lower surface of the face plate portion. 3. An engaging hole which is formed so as to be able to be fitted and removed is provided correspondingly.
A formwork device for a concrete structure according to any one of the above. 10. The base portion is a base block, into which a lower portion of a stay bolt inserted into an insertion hole of a stay leg provided on the outer surface of the lowermost form block main body is engaged. The formwork apparatus for a concrete structure according to claim 3, wherein the anchor tubular body is embedded.