JP2000328782A - Form fixture and form execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively and efficiently perform form building-up work in a short period in a form fixture and a form execution method for mutually fixing forms at a right angle in the right-angled part when executing a column and a wall made of reinforced concrete. SOLUTION: In this form fixture and a form execution method, the tip sides of mutually right-angled horizontal end thick pipes 3a, 3b are inserted into quadrangular pipes of respective form fixtures 6a, 6b in a position for mutually assembling the horizontal end thick pipes 3a, 3b at a right angle on the outside of a form, the square pipes are fastened and fixed by bolts to the inside horizontal end thick pipes 3a, 3b in a state of allowing a stopper plate 8 of an end part of the respective square pipes to abut to side surfaces of the mating side horizontal end thick pipes 3a, 3b, and next, a bolt Bs supported by the stopper plate 8 is fastened so that the horizontal end thick pipes are pushed and fixed to the form side by the bolt tip.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a formwork fixing tool and a method for forming a formwork for fixing forms at right angles to each other at the time of constructing a reinforced concrete column or wall. About. However, the present invention is a technique that can be applied to molds other than those where the molds are fixed at right angles to each other.

[0002]

2. Description of the Related Art FIGS. 1 and 2 are views showing a conventional formwork construction method. FIG. 1 is a front view, and FIG. 2 is a sectional view taken along line AA of FIG. Reference numerals 1a, 1b, 1c, and 1d denote dams for forming the four surfaces of the pillars, and the outside ends thereof have thick vertical pipes 2a,
b, 2c and 2d are set up, and these vertical end thick pipes 2
a, 2b, 2c, 2d, outside the thick pipes 3a, 3
b, 3c and 3d are arranged horizontally.

[0003] The wide end pipes 3a, 3b, 3c and 3d are
Using two pipes at a time, two horizontal end pipes 3a, 3b, 3c,
The separators 4 are inserted from between 3d, and these separators 4 are inserted into the rib seats mounted over the two wide-end pipes, and nuts are fitted to form ties and tightened.

As described above, the separator 4 is provided inside the mold.
Is inserted into the cross, and the thick pipes 3
Since the gaps between a, 3d and 3b, 3c are tightened, there is no danger that the dam board will bulge outward or come off during concrete casting.

[0005]

However, a large amount of the separator 4 and foam tie (registered trademark) must be used. As a result, the position of the separator is determined on the weir plate, the hole for inserting the separator is inserted, the separator 4 is inserted, and the wide end pipes 3a, 3
The number of man-hours for fixing b, 3c, 3d and the like is large, which causes a prolonged work period. Therefore, the construction cost increases.

[0006] A method without using the separator 4 is also possible. For example, as shown by a broken line 5 in FIG. 2, a chain or a number line is put on the separator 4 between the horizontal end thick pipes 3a and 3b, as shown by a broken line 5 in FIG. Then, by tightening with a buckle or the like, it is possible to prevent the form from being pushed out during concrete casting.

[0007] However, in this case, too, the burden of the work of hanging and tightening the chain and the line is heavy. When using a chain, it is necessary to prepare a large number of chains and buckles. If the line is used, it is disposable, which is uneconomical.

Although the description has been made with reference to the column formwork as an example, a similar problem occurs when a wall formwork is constructed. In addition, the problem is not limited to the pillars and walls of a building, but is always encountered when a right angle surface of a concrete building is constructed.

[0009] The technical problem of the present invention is to focus on such a problem, and to make it possible to carry out vertical work of a formwork at the time of constructing a concrete building at low cost and efficiently in a short time.

[0010]

The technical problem of the present invention is solved by the following means. Claims 1 to 3 are inventions of a mold fixing device. Claim 1 has a stopper plate that is integrally formed on one surface of one end of a square pipe into which a thick pipe with a lateral end can be inserted, and a stopper plate that is perpendicular to the one surface, and is provided on at least one of the one surface and the surface facing the one surface. And a female fixture having a female screw hole for supporting a tightening bolt so as to press the tip of the bolt against a thick internal horizontal pipe or the like.

[0011] As shown in Fig. 5, two thick pipes 3a, 3a at right angles to each other are placed in two form fixtures 6a, 6b.
With the stopper plate pressed against the side wall of the mating side wide end pipe 3a, 3b or the like, the bolt is tightened to fix the stopper plate to the inside side end thick pipe 3a, 3b or the like.

As described above, since the stopper plate is integrally provided at one end of the square tube, the other thick pipe at the lateral end can be pressed against the form by the stopper plate. Then, a bolt is screwed into a female screw hole provided on two opposing surfaces of the square tube and tightened, so that the tube can be fixed to a laterally thick pipe inserted into the square tube.

As a result, it is not necessary to use a separator as in the prior art, so that complicated and troublesome work can be greatly reduced, the work period can be shortened, and the material cost of the separator and the like can be reduced.

According to a second aspect of the present invention, there is provided a female screw hole for supporting a tightening bolt such that the tip of the bolt is pressed into the other thicker horizontal pipe perpendicular to the inserted thicker pipe in the stopper plate according to the first aspect. It is a formwork fixing tool which has.

As described above, since the female screw hole is formed in the stopper plate integral with the square tube, and the bolt can be screwed into the stopper plate, the stopper plate is brought into contact with the mating side thicker pipe or the like. By tightening the bolts, the thick pipe at the other end of the pipe can be pressed firmly against the formwork,
Positioning can be easily performed.

According to a third aspect of the present invention, there is provided a form fixing device in which the female screw hole according to the first or second aspect is formed by fixing a nut by welding or the like. As described above, since the female screw hole for supporting the bolt is realized by welding and fixing the nut to the square pipe or the stopper plate, the female screw hole can be easily formed.

A fourth aspect of the present invention relates to a method of constructing a formwork. In a position outside the formwork where the thick pipes at the horizontal ends are assembled at right angles to each other, the tip side of the thick pipes at the right angles to each other is used. Is inserted into each square pipe, and the stopper plate at the end of each square pipe is placed on the side of the other thick pipe such as the other end, and the square pipe is bolted to the inner thick end pipe etc. Then, the bolt supported by the stopper plate is tightened, and a thick pipe at the side end is pressed against the form side with the tip of the bolt and fixed.

As described above, the two rectangular tube fixing members are used, and the stopper plates at the ends of the two square tubes are respectively brought into contact with the side surfaces of the mating side wide pipes or the like. According to the method of tightening and fixing to the thick pipe with bolts, then tightening the bolt supported by the stopper plate and pressing the horizontal thick pipe etc. to the formwork with the tip of the bolt, there is no need for a separator etc. As a result, the work is simplified and the construction period is significantly reduced.

According to a fifth aspect of the present invention, two ends of two square pipes into which a thick pipe with a lateral end can be inserted are overlapped at right angles and fixed integrally, and are opposed to each other in a region other than the overlapping portion. A mold fixing tool having a female screw hole for supporting a tightening bolt on at least one side of the surface so as to press the tip of the bolt against a thick internal horizontal pipe or the like.

The method of using the form fixing device is the same as that of the form fixing device according to any one of the first to fifth aspects. By screwing the bolts, the thick pipes at the side can be fixed at right angles to each other.

According to the first to fifth aspects of the present invention, there is provided a
The use and handling are complicated because the two form-fixing fixtures are used in combination. However, since one end of each of the two square tubes is fixed to each other and integrated, as in claim 5, And easy handling. In particular, the two horizontal end pipes that are orthogonal to each other do not come off,
It can be fixed easily and securely. Although a stopper plate is not provided, it is used in a place where a stopper plate is not required.

The term "wide-end thick pipe or the like" means that it is not limited to a horizontal end-thick pipe but may be a vertical end-thick pipe, a pipe other than a horizontal-end thick-pipe or a vertical end-thick pipe, or a square material. Yes, including any pipe or rod that can be inserted into a square tube.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment will be described as to how the formwork fixing device and the formwork construction method according to the present invention are actually embodied. FIG. 3 shows an embodiment of the formwork fixing device according to the present invention. Reference numeral 3 denotes a rectangular pipe with a rectangular cross section,
The form fixing device 6 is configured by using a square tube 7 having a size in which the laterally thick pipe 3 can be inserted. In addition, the side end thick pipe 3
It may be circular. A wooden bar may be used.

One surface 7a of one end 7a of the metal square tube 7
b, a stopper plate 8 perpendicular to the one surface 7b is integrally provided. The stopper plate 8 has a side 8a such as a member obtained by cutting a ready-made angle material or a metal plate bent into an L shape.
Can be easily realized by overlaying and welding on one surface 7b of the square tube 7.

On one surface 7b of the square tube 7, a female screw hole 9a for screwing a bolt is formed. Further, two female screw holes 9b, 9c are formed in the facing surface 7c facing the one surface 7b. The stopper plate 8 also has a female screw hole 9
s is formed.

FIG. 3 shows the threaded holes 9a, 9b, 9c and 9s formed directly on the square tube 7 and the stopper plate 8 itself, while FIG. 4 shows the welding of the nuts Na, Nb, Nc and Ns. It is integrated. Therefore, it suffices to make holes in the square tube 7 and the stopper plate 8 through which the bolts Ba, Bb, Bc, and Bs can pass.

FIG. 5 is a perspective view showing an embodiment of a method of fixing a mold using the mold fixing tool 6, and is an example applied to a place such as a pillar or a wall which is at right angles to each other. 3a,
Numeral 3b is a thick pipe with a horizontal end which is at a right angle to each other, each end of which is inserted into the form fixtures 6a, 6b.

That is, the form fixing tool 6a into which the upper horizontal pipe 3a is inserted is mounted so that the stopper plate 8 faces downward. In addition, the stopper plate 8 is mounted so that the stopper plate 8 comes into contact with the outer surface 3o of the lower horizontal end thick pipe 3b. When the two upper bolts Bb and Bc are tightened, the tips of the bolts Bb and Bc push down the upper surface 3u of the laterally thick pipe 3a.

As a result, the form fixing fixture 6a is fixed to the wide end thick pipe 3a.
When the bolt Bo is tightened, it is securely fixed. Next, when the bolt Bs of the stopper plate 8 is tightened, the lower thick pipe 3b is pushed toward the weir plate 1b in FIG.

The form fixture 6b into which the lower thick pipe 3b is inserted is mounted so that the stopper plate 8 faces upward. In addition, the stopper plate 8 is mounted such that the stopper plate 8 comes into contact with the outer side surface 3o of the upper horizontal end thick pipe 3a.
Then, when the two lower bolts Bb, Bc are tightened, the tips of the bolts Bb, Bc push up the lower surface of the laterally thick pipe 3b.

As a result, the mold fixing fixture 6b is fixed to the wide end thick pipe 3b.
When the bolt Bo is tightened, it is securely fixed. Next, when the bolts Bs of the stopper plate 8 are tightened, the upper side wide pipe 3a is pushed toward the weir plate 1a in FIG.

As shown in FIG. 1, for example, 50
At intervals of about cm, the corners of the slats 1a and 1b that are at right angles to each other are tightened and fixed from the outside as shown in FIG. Similarly, the corners of the weirs 1b and 1d, the corners of the weirs 1d and 1c, the weir 1c
And 1a are tightened and fixed.

Then, concrete is poured into the insides of the dams 1a, 1b, 1c and 1d, and when curing is completed, the bolts Ba, Bb, Bc and Bs of the form fixtures 6a and 6b are finished.
And remove it from the thick pipes 3a and 3b.

In the case where two transversely thick pipes 3a, 3b are fixed at right angles as shown in FIG. 5, the upper thicker pipe 3a is on the upper side, and the lower thicker pipe 3b is on the lower side. The fixing work is difficult because there is a risk of detachment to the sides, and it is necessary to strongly tighten the bolts Bs of the stopper plate.

The tip of the stopper plate 8 shown in FIG.
As shown in the figure, when the rectangular pipe 7 is extended in an L-shape on the opposite side, it is possible to prevent the upper lateral end thick pipe 3a from being detached upward. Further, it becomes impossible for the lower side thick pipe 3b to be detached downward. Therefore, the retaining 81
Need only be provided on one of the two formwork fixtures 6a, 6b.

FIG. 6 is a longitudinal sectional view of an example in which the above-mentioned formwork fixing tool is used for fixing a formwork of an underground beam. After placing the discarded concrete 11 on the gravel 10 and arranging the beam main reinforcement 12, the abdominal muscle 13, the stirrup 14, etc.,
a, 15b are erected, and the horizontal rails 16a, 16b are passed horizontally to the outside thereof.

And, on the outside thereof, a vertical thick pipe 17a,
Stand 17b. At this time, the mold fixture 6c of the present invention,
6 d is discarded and fixed on the concrete 11. That is, the concrete nail 18 is driven into the stopper plate 8 from a nail hole previously opened and fixed. The vertical end thick pipes 17a, 17b are inserted into the form fixtures 6c, 6d and set up.

Further, the both ends of the horizontal pipe 19, which is stretched over the underground beam, are inserted into the horizontal form fixtures 6e and 6f, and are fixed by tightening the bolts Ba to Bc. Then
After tightening the bolt Bs of the stopper plate 8 for positioning,
Bolts Ba, B of the lower frame fixing fixtures 6c, 6d
By tightening b and Bc, the lower ends of the vertical end thick pipes 17a and 17b are fixed.

It is also possible to use an integrated mold fixture described below between the ends of the horizontal pipe 19 and the upper ends of the vertical thick pipes 17a and 17b.

As shown in FIG. 5, the above-mentioned formwork fixture has a structure in which two formwork fixtures 6a and 6b are used in combination. It is necessary to combine two independent mold fixtures 6a and 6b in places where it is necessary to tighten with the bolts Bs supported on the stopper plate 8, and to perform the tightening operation independently of each other.

However, there are places where it is not necessary to use the bolt Bs of the stopper plate. In such a place, if the pair of mold fixing tools 6a and 6b are integrated in advance,
Easy to use and handle.

FIG. 7 shows an improvement in response to such a demand, in which two square tubes 71 and 72 are welded and integrated at right angles. That is, both ends of the square tubes 71 and 72 are overlapped and integrated with each other at the welded portion 20. Then, a bolt B is provided in an area other than the integrated portion overlapping each other.
1, B2 is screwed.

In the square tube 71 on the upper side of the drawing, female screw holes are formed in the surfaces 71a and 71b facing each other in regions other than the integrated portion, and the bolts B1 and B2 are screwed together. The square tube 72 on the lower side of the figure has female screw holes formed in the surfaces 72a and 72b facing each other in regions other than the integrated portion, and bolts B1 and B2 are screwed together.
In this embodiment, the bolts B1 and B2 are arranged at positions facing each other.

In this integrated frame fixing device, one of the two thick horizontal end pipes orthogonal to each other is used.
a into the upper square tube 71, and the other
b is inserted into the lower square tube 72. Then, in a state where the square tubes 71 and 72 are slid and positioned with respect to the wide end pipes 3a and 3b, the bolts B1 and B2 of the square tubes 71 and 72 are fastened and fixed.

Only one of the bolts B1 and B2 is sufficient. The female screw holes for supporting the bolts are formed by welding and fixing the nuts to the square pipe, as in the embodiment of FIG.

When the two square pipes 71 and 72 are integrated as described above, the thick pipes 3a and 3b at right angles to each other are provided at right angles to each other.
Work can be easily performed without fear of detachment.
Therefore, it also has the function of retaining the chain line 81 shown in FIG.

The square pipes 7, 71, 72 of the form fixing fixtures 6, 6a to 6f and the thick pipes 3, 3 inserted therein.
The dimensions are such that a gap G of 3 to 5 mm is formed between a, 3b, 17a, 17b, and 19 as shown in FIG.

As is clear from FIG. 6, FIGS.
The independent mold fixing fixtures 6 and 6a to 6f of FIG. 7 and the integrated mold fixing fixture of FIG. 7 are not limited to the horizontal thick pipe but may be the vertical thick pipe. In addition, since the formwork fixing device of the present invention can be used for formwork other than right-angled sections, it is also possible to insert and use a pipe other than a wide end pipe or a vertical end pipe, or a wooden square material. it can. Therefore, the present invention can be used in any place where it is necessary to fix two pipes or square pieces at right angles to each other.

[0049]

According to the first aspect of the present invention, since the stopper plate is integrally provided at one end of the square tube, it is possible to press the other wide end pipe against the mold side by the stopper plate. Then, a bolt is screwed into a female screw hole provided on two opposing surfaces of the square tube and tightened, so that the tube can be fixed to a laterally thick pipe inserted into the square tube.

As a result, it is not necessary to use a separator as in the prior art, so that complicated and troublesome work is greatly reduced, the construction period is shortened, and the material cost of the separator and the like can be reduced.

According to the second aspect, since a female screw hole is formed in the stopper plate integral with the square tube and a bolt can be screwed into the stopper plate, the stopper plate is brought into contact with a mating side wide end pipe or the like. By tightening the bolts in this state, it becomes easy to firmly press and position the mating side wide end pipe or the like against the formwork side.

According to the third aspect, since the female screw hole for supporting the bolt is realized by welding and fixing the nut to the square pipe or the stopper plate, the female screw hole can be easily formed.
Bolts can be stably supported.

As described in claim 4, the square tube is fixed by using two mold fixing tools, and the stopper plates at the ends of the two square tubes are respectively brought into contact with the side surfaces of the mating side wide end pipes or the like. According to the method of fastening with a bolt to the inner side of the thick pipe and fixing it with bolts, then tightening the bolts supported by the stopper plate, and pressing the end of the bolt to the side of the thick pipe against the formwork, a separator is required. And as a result,
The work is simplified and the construction period is significantly reduced.

According to the fifth aspect, since one ends of the two rectangular tubes are fixed to each other and integrated, the usage and handling are facilitated. In particular, it is possible to easily and reliably fix the two transversely thick pipes that are orthogonal to each other without separating. Therefore, by preparing two types of this form fixing device and a form fixing device having a stopper plate, by selectively using them according to the location,
Work efficiency is significantly improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a conventional formwork construction method.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing an embodiment of a formwork fixing device according to the present invention.

FIG. 4 is a cross-sectional view of an embodiment in which a nut is integrated with a square tube to form a female screw hole for bolt support.

FIG. 5 is a perspective view showing a method of fixing a mold using the mold fixture of FIG. 4;

FIG. 6 is a longitudinal sectional view of an example in which the form fixing device of the present invention is used for underground beam formwork.

FIG. 7 is a perspective view showing an embodiment of an integrated mold fixing device.

[Explanation of symbols]

1a ... 1d Weir board 2a ... 2d Wide end thick pipe 3a ... 3d Wide end thick pipe 4 Separator 6, 6a-6f Formwork fixture 7 Square tube 8 Stopper plate 9a, 9b, 9c Female thread hole Na, Nb, Nc, Ns Nut Ba, Bb, Bc, Bs, B1, B2 Bolt 71, 72 Square tube 71a / 71b, 72a / 72b Area other than integrated part

Claims (5)

[Claims] 1. A rectangular tube into which a thick pipe with a lateral end can be inserted has a stopper plate integrally formed on one surface of the one end of the rectangular tube, and at least one of the one surface and a surface facing the one surface. ,
A formwork fixing device having a female screw hole for supporting a tightening bolt such that the tip of the bolt is pressed against an inner side of a thick pipe. 2. The stopper plate according to claim 1, wherein said stopper plate has a female screw hole for supporting a tightening bolt so as to press a bolt tip against another inserted horizontal thick pipe or the like perpendicular to the inserted horizontal thick pipe or the like. The formwork fixing device according to claim 1, wherein: 3. The mold fixing device according to claim 1, wherein the female screw hole is formed by fixing a nut by welding or the like. 4. At the position outside the formwork where the horizontal thick pipes and the like are assembled at right angles to each other, insert the distal ends of the horizontal thick pipes and the like at right angles to each square pipe, With the stopper plate at the end of the square tube in contact with the side surface of the mating horizontal end thick pipe, etc., fix the square tube to the internal side end thick pipe with bolts, and then supported by the stopper plate A method of constructing a formwork, comprising tightening a bolt and pressing a thick pipe at the end of the bolt against the form side. 5. One end of two square pipes into which a wide-width pipe or the like can be inserted is overlapped at a right angle and fixed integrally, and at least one of surfaces facing each other in a region other than the overlapping portion. A form-fixing tool having a female screw hole for supporting a tightening bolt on one side so as to press the tip of the bolt against a thick internal horizontal pipe or the like.