JP2002121892A - Concrete form fixing means and concrete form fixing construction using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete form fixing means capable of improving the working efficiency by omitting the cutting work at the tip portion of a separator after fixing concrete forms using a form panel and an insulated form panel, pouring concrete, dismantling the form by fixing means, thereby omitting the cutting work for the tip portion of the separator. SOLUTION: This concrete form fixing means is for fixing a concrete form using an insulation form panel 11 and a form panel 12 equipped with a bar- shaped separator 31, a cone member 26, an attachment 32, a bar-shaped tightening member 22, a tightening washer 23 and nut 25; and the length of a male thread 31b of a separator 31 arranged at the side of the insulation form panel 11 is set in such a manner that the length of a male thread 31b becomes shorter than the thickness of a rail 11b of the insulation form panel 11, and the length of the male thread 31b of the separator 31 arranged at the side of form panel 12 is set shorter than the length of the cone member 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete form fixing device used for concrete pouring in building construction, and more particularly to a concrete form fixing device for fixing a concrete form using an insulated form panel. It relates to the concrete form fixing structure used.

[0002]

2. Description of the Related Art Conventionally, in a building in which wall materials and flooring materials are made of concrete, construction has been performed by using a heat insulating form panel. This heat-insulating form panel is provided with a crosspiece on one side of a heat-insulating material made of a hard-foamed plastic board, and serves as both a concrete-casting form and a heat-insulating material.

Conventionally, a concrete formwork using this heat-insulating formwork panel is fixed with a space between the forms being fixed by a concrete formwork fixture as follows. That is, as shown in FIG. 3, a heat insulating form having a heat insulating material 11a made of a hard foamed plastic board and a crosspiece 11b partially embedded and fixed on one side (outside surface) of the heat insulating material 11a. Panel 11 and flat plate 1 made of veneer plate
Forming panels 12 each having a crosspiece 12b fixed to one side surface (outer side surface) of 2a are arranged at a predetermined interval, and the heat insulating forming panel 11 and the forming panel 12 are provided with a separator 2
1 is inserted.

The heat insulating material 11a is made of, for example, a thermoplastic or thermosetting material having a heat insulating effect, such as polystyrene, polyurethane, polyethylene, polypropylene, and phenol. Further, the arbor 11b is made of, for example, a square material such as natural wood or plastic material.
1a, and is fixed by bonding or the like.
The lug 11b protrudes from the surface of a by about 10 mm.

[0005] The separator 21 has a rod shape,
Disc-shaped flange portions 21a, 21a are formed at both end portions, and a male screw portion 21b having a male screw is formed from each flange portion 21a on the distal end side. The length of the male screw portion 21b is set to be longer than the thickness of the crosspiece 12b of the heat insulating form panel 12.

[0006] One end of the separator 21 is inserted into the heat insulating material 11a of the heat insulating form panel 11 and the through hole of the crosspiece 11b, the flange 21a is brought into contact with the inner side surface of the crosspiece 11b, and the distal end of the male screw part 21b. Project outward from the outer surface of the crosspiece 11b. A female screw 22a provided at one end of the foam tie 22 is screwed into a portion of the male screw portion 21b protruding from the crosspiece 11b and tightened. A fastening washer 23 is inserted into the foam tie 22, and a thick end member 24 made of a square pipe is sandwiched between the fastening washer 23 and the pier 11 b.
The nut 25 is screwed and fastened to the male screw 22b, and the wide end member 24 is fixed.

At the other end of the separator 21, a cone member 26 made of synthetic resin is screwed with its female screw to the male screw of the male screw portion 21b, and is interposed between the flange 21a and the inner surface of the flat plate 12a. The distal end of the male screw portion 21b is inserted into the flat plate 12a of the form panel 12, and the distal end protrudes outward from the outer surface of the flat plate 12a. The female screw 22a of the foam tie 22 is screwed and fastened to the male screw of the male screw part 21b projecting from the flat plate 12a. A thick side member 24 is sandwiched between the fastening washer 23 and the crosspiece 12b, and is fastened with a nut 25 screwed to the male screw 22b of the foam tie 22.

[0008]

However, in such a conventional concrete form fixing device and concrete form fixing structure, the heat insulating material 11a of the heat insulating form panel 11 and the flat plate 12a of the form panel 12 are not provided. When the fixture is removed after concrete is poured in between, the tip of the separator 21 projects from the crosspiece 11b of the heat-insulating form panel 11, so that the projecting portion is cut. When the form panel 12 is removed, the tip of the separator 21 protrudes from the concrete wall surface, and this portion is cut. For this reason, there is a problem that work is troublesome and construction costs are increased.

The present invention has been made in view of the above circumstances, and a heat insulation form panel and a concrete form using the form panel are fixed, concrete is poured, and the fixing tool is removed and disassembled. It is an object of the present invention to provide a concrete formwork fixing device and a concrete formwork fixing structure using the same, which can omit the cutting operation of the tip portion of the separator and can improve work efficiency. I do. Also, it is possible to omit the work of cutting the tip of the separator after fixing the concrete formwork in which the heat insulating formwork panel is disposed oppositely, casting concrete, removing the fixture and dismantling, An object of the present invention is to provide a concrete form fixing device capable of improving work efficiency and a concrete form fixing structure using the same.

[0010]

In order to achieve the above object, a concrete form fixing device according to claim 1 is provided with a pier on one side of a heat insulating material made of a hard foamed plastic board, and is used for concrete casting. A concrete formwork fixing device for fixing a concrete formwork using a heat insulation formwork panel serving also as a formwork and a heat insulating material, and a formwork panel in which a pier is fixed to a weir plate, comprising a male screw A male screw part having at both ends thereof a bar-shaped separator having a flange formed at the base end of the male screw part, and a cone mounted on the male screw part of the separator arranged on the formwork panel side A member, an insertion portion having a female screw to be screwed to the male screw of the male screw portion of the separator at a distal end, a flange formed at a base end of the insertion portion, and an opposite to the insertion portion of the flange. A male formed on the side An attachment having a portion, a female screw threaded to the male screw of the male screw portion of the attachment at one end, a rod-shaped tightening member having a male screw formed therein, and a tightening member inserted into the tightening member A washer and a nut screwed into the male screw of the tightening member, and the length of the male screw portion of the separator disposed on the heat insulation form panel side is equal to the length of the heat insulation form panel. The length of the male screw portion of the separator arranged on the formwork panel side is set shorter than the length of the cone member, while being set shorter than the thickness of the crosspiece.

A concrete form fixing structure according to a second aspect is a concrete form fixing structure using the concrete form fixing device according to the first aspect, wherein the heat insulating mold panel is provided on the side of the heat insulating form panel. An end portion of the separator on the frame panel side is inserted into the heat insulating material of the heat insulating form panel and the through hole of the crosspiece, and the flange portion of the separator abuts on an inner side surface of the crosspiece, and the attachment of the attachment The insertion portion is inserted into the through hole of the pier from the outside of the pier, the female screw of the attachment is screwed into the male screw of the male screw portion of the separator in the pier, and tightened, and the flange of the attachment is The crosspiece is held between the flange portion of the separator and the female screw of the tightening member is screwed to the male screw of the male screw portion of the attachment. The fastening member is tightened, a fastening washer is inserted into the fastening member, a thick end is sandwiched between the fastening washer and the crosspiece, and the fastening member is fastened by a nut screwed to the male screw of the fastening member. And on the form panel side, the cone member is mounted on the male thread portion of the separator on the form panel side so that the cone member is interposed between the flange portion of the separator and the inner surface of the weir plate, The tip of the cone member is in contact with the inner side surface of the weir plate, the insertion portion of the attachment is inserted into the through hole of the weir plate from outside the weir plate, and the male screw of the separator in the cone member is inserted. The female screw of the attachment is screwed into the male screw of the part and tightened, the dam plate is held between the flange of the attachment and the tip of the cone member, The female screw of the tightening member is screwed and tightened to the male screw of the male screw portion, a tightening washer is inserted into the tightening member, and a thick material is sandwiched between the tightening washer and the crosspiece. The fastening member is fastened by a nut screwed into the male screw of the fastening member.

A concrete formwork fixing device according to a third aspect of the present invention comprises a heat insulating material made of a hard foamed plastic board provided with a crosspiece on one side thereof, and a heat insulating formwork panel serving both as a concrete casting formwork and a heat insulating material. A concrete formwork fixing device for fixing a concrete formwork in which
Male screw portions having male screws are formed at both ends, a flange portion is formed at the base end of the male screw portion, and the length of the male screw portion is set shorter than the thickness of the crosspiece of the heat insulating formwork panel. A rod-shaped separator, an insertion portion having a female screw screwed into the male screw of the male screw portion of the separator at a distal end portion, a flange formed at a base end of the insertion portion, and the insertion portion of the flange portion Attachment having a male screw portion formed on the opposite side, and a female screw at one end screwed to the male screw of the male screw portion of the attachment,
It is characterized by comprising a rod-shaped fastening member having an external thread formed thereon, a fastening washer inserted into the fastening member, and a nut screwed into the external thread of the fastening member.

A concrete form fixing structure according to a fourth aspect of the present invention is a concrete form fixing structure using the concrete form fixing device according to the third aspect, wherein each of the heat insulating form panels is provided with the concrete form fixing means. The end of the separator is inserted into the heat insulating material of the heat insulating form panel and the through hole of the crosspiece, the flange of the separator abuts on the inner surface of the crosspiece, and the insertion portion of the attachment is connected to the crosspiece. Is inserted into the through hole of the crosspiece from the outside of the crosspiece, and the female screw of the attachment is screwed into the male screw of the male screw portion of the separator in the crosspiece and tightened, and the flange of the attachment and the flange of the separator are tightened. And the female thread of the fastening member is screwed into the male screw of the male screw part of the attachment. The inserts the fastening washer member tightening TanFutoshizai is sandwiched between the the 該締 lock washer 桟木,
The fastening member is fastened by a nut screwed into the male screw.

[0014]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. 1 and 2
In FIG. 3, the same components as those in FIG. 3 are denoted by the same reference numerals, and description thereof will be simplified. In the concrete formwork fixing device according to the present embodiment, as shown in FIG.
The length of the external thread portion 31b of the separator 31 disposed on one side is set shorter than the thickness of the crosspiece 11b of the heat insulation type panel 11, and the length of the external thread portion 31b of the separator 31 disposed on the form panel side. Is set shorter than the length of the cone member 26, and the attachment 32 is interposed between the separator 31 and the foam tie (fastening member) 22. Is similarly configured.

Here, the length of the male screw portion 31b disposed on the heat insulating form panel 11 side is set shorter than the thickness of the crosspiece 11b of the heat insulating type panel 11, and the separator 31 is disposed on the form panel side. It is sufficient that the length of the male screw portion 31b to be formed is set shorter than the length of the cone member 26. If this condition is satisfied, the male screw portions 31b on both sides are formed.
May be the same or different. In the present embodiment, the lengths of the external thread portions 31b on both sides are set to be the same.

As shown in FIGS. 1 and 2, the attachment 32 has a columnar insertion portion 32b having a female screw 32a screwed to a male screw of a male screw portion 31b of a separator 31 formed at a distal end thereof. A disc-shaped flange 32c formed at the base end of the portion 32b, and a male screw portion formed on the opposite side of the insertion portion 32b of the flange 32c and having a male screw screwed into the female screw 22a of the form tie 22 32d.

With this concrete form fixing device, the heat insulating form panel 11 and the form panel are fixed as follows. As shown in FIG. 1, the separator 31
One end is inserted into the heat insulating material 11a of the heat insulating form panel 11 and the through hole of the crosspiece 11b, and the flange 31a is
b, and the tip of the male screw portion 31b is
1b. In the attachment 32, the insertion portion 32b is inserted from the outside of the crosspiece 11b into the through hole of the crosspiece 11b, and the male screw portion 3 of the separator 31 in the crosspiece 11b.
The female screw 32a is screwed into the male screw 1b and tightened, and the crosspiece 11b is held between the flange 32c and the flange 31a of the separator 31. The inner diameter of the through hole of the crosspiece 11 b is set smaller than the outer diameter of the flange 31 a of the separator 31 and the outer diameter of the flange 32 c of the attachment 32.

A female screw 22a of the foam tie 22 is screwed and fastened to the male screw of the male screw portion 32d of the attachment 32. A fastening washer 23 is inserted into the form tie 22, as in the case of FIG.
3 and the crosspiece 11b, a lateral end thick member 24 consisting of a square pipe
, And the nut 25 is screwed into the male screw 22b of the form tie 22 and tightened, so that the side end thick material (end thick material) 2
4 is fixed.

At the other end of the separator 31, a cone member 26 is screwed with its female screw to the male screw of the male screw portion 21b and interposed between the flange 31a and the inner surface of the flat plate (dam plate) 12a. The tip of the cone member 26 is in contact with the inner surface of the flat plate 12a. At this time, the tip of the separator 31 is located inside the cone member 26, that is, inside the flat plate 12a. Attachment 32 is inserted portion 32b
Is inserted into the through hole of the flat plate 12a from outside the flat plate 12a, and the male screw portion 31 of the separator 31 in the cone member 26 is inserted.
The female screw 32a is screwed into the male screw b and tightened,
Flat plate 12a between the flange 32c and the tip of the cone member 26
Is held. The inner diameter of the through hole of the flat plate 12a is set smaller than the outer diameter of the flange 32c of the attachment 32.

The female screw of the foam tie 22 is screwed to the male screw of the male screw portion 32d of the attachment 32 and tightened. As in the case of FIG. 3, a fastening washer 23 is inserted into the foam tie 22, and a lateral end thick member 24 is sandwiched between the fastening washer 23 and the crosspiece 12 b. It is tightened by the nut 25 screwed.

The procedure for fixing the heat insulating form panel 11 and the form panel 12 using the concrete form fixing device will be described below. First, the heat insulation form panel 11 and the form panel 12 are arranged at a predetermined interval. next,
Between these, the separator 31 to which the cone member 26 is attached is attached to the end on the side where the cone member 26 is not attached.
b, the flange 31a is brought into contact with the inner surface of the crosspiece 11b, and the tip of the cone member 26 is placed in contact with the inner surface of the flat plate 12a of the form panel 12. At this time, the separator 31 on the heat insulation form panel 11 side
The tip of the male screw portion 31b of the separator 31 on the one form panel 12 side is located in the crosspiece 11b.
Is inside the flat plate 12a (inside the cone member 26).
It is located in.

Next, the insertion portion 32b of the attachment 32
From the outside of the pier 11b of the heat-insulating formwork panel 11
b, the female screw 32a is screwed into the male screw of the male screw portion 31b of the separator 31 and tightened.
2c and a flange 11b between the flange 31b of the separator 31
Hold. Next, the female screw 22a of the foam tie 22 is screwed into the male screw of the male screw portion 32d of the attachment 32 and tightened. Next, with the lateral end thick member 24 in contact with the outer side surface of the crosspiece 11b, the male screw 2
The nut 25 is screwed into the nut 2b and tightened. The nut 25 presses the tightening washer 23 against the lateral end thick member 24, thereby fixing the lateral end thick member 24 between the tightening washer 23 and the crosspiece 11b. I do.

On the other hand, on the form panel 12 side, the insertion portion 32b of the attachment 32 is inserted into the through hole of the plate 12a from outside the flat plate 12a of the form panel 12, and the female screw 32a is inserted into the male screw section 31b of the separator 31. The flat plate 12a is held between the flange 32c and the tip of the cone member 26. Next, the foam tie 22 is attached to the attachment 32 in the same manner as the case of the heat-insulating form panel 11, and the nut 25 is screwed into the male screw 22b of the foam tie 22 and tightened. It is fixed between the washer 23 and the crosspiece 12b.

After assembling the formwork in this way, concrete is poured between the heat-insulating formwork panel 11 and the formwork panel 12 to form a concrete wall. After that, to dismantle the formwork, first, on the heat-insulating formwork panel 11 side,
Loosen the nut 25, remove the nut 25 from the foam tie 22, and remove the side end thick member 24 from the crosspiece 11b. Next, the form tie 22 is rotated to attach the attachment 32.
Then, the attachment 32 is rotated and removed from the separator 32. At this time, the separator 31
The tip of the male screw portion 31b is located inside the crosspiece 11b and does not protrude from the outer surface of the crosspiece 11b. The insulated formwork panels are used as is.

On the other hand, on the form panel 12 side as well, on the side of the heat insulating form panel 11, the nut is loosened to remove the side end thick member 24, the foam tie 22 is removed, and the attachment 32 is removed. At this time, the separator 31
Of the male screw portion 31b is located inside the flat plate 12a. Next, after removing the form panel 12, the cone member 26 is removed, and mortar or the like is filled in the concave portion formed in the concrete wall by the cone member 26 as necessary. At this time, the male screw portion 31b of the separator 31
Is buried in a mortar or the like.

In the concrete form fixing device and the concrete form fixing structure using the same as described above,
The tip of the male screw portion 31b of the separator 31 is located in the through hole of the crosspiece 11b of the heat insulating form panel 11. Therefore, when the side end thick member 24, the foam tie 22, and the attachment 32 are removed after the concrete is cast, the male screw portion 31b of the separator 31 does not protrude from the outer side surface of the crosspiece 11b. Since it is not necessary to perform the work of cutting the work, the work efficiency can be improved.

The separator 31 on the form panel 12 side
Is located inside the cone member 26, that is, inside the flat plate 12a. Therefore,
After the concrete is cast, 24 thick ends and 2 foam ties
2. When the attachment 32 and the form panel 12 are removed, the male screw portion 31b of the separator 31 is located in the concave portion formed in the concrete wall and does not protrude from the wall surface. Since there is no need to perform a cutting operation, the operation efficiency can be improved.

In the above embodiment, when the cone member 26 is mounted on the male screw portion 31b of the separator 31, the female screw is screwed to the male screw of the male screw portion 31b. A through-hole may be formed in the center of the member 26, and this through-hole may be inserted into the male screw portion to be interposed between the flange 31a and the inner surface of the flat plate 12a.

In the above embodiment, the fixture for fixing the concrete form using the heat insulating form panel 11 and the form panel 12 and the concrete form fixing structure using the same have been described. Alternatively, when fixing a concrete formwork in which two heat-insulating formwork panels 11 are opposed to each other with the heat-insulating material 11a side inward, the male screw portions at both ends of the separator 31 are fixed to the heat-insulating formwork panel 12 together.
The length of the male screw portion 31b on the side (the length of the male screw portion is set shorter than the length of the crosspiece 11b) and the separator 31
Of both ends may be the same as the above-described heat-insulating form panel 12 side.

[0030]

As described above, according to the present invention,
After fixing the concrete formwork using the insulated formwork panel and the formwork panel, casting concrete, removing the fixture and dismantling, it is possible to omit the work of cutting the tip of the separator. , Work efficiency can be improved. Further, according to the present invention, it is possible to omit the work of cutting the front end portion of the separator after fixing the concrete formwork in which the heat-insulating formwork panels are arranged facing each other, casting concrete, removing the fixture and dismantling the concrete formwork. Therefore, work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a fixing structure using a concrete formwork fixing device according to an embodiment of the present invention.

FIG. 2 is a side view of the attachment, a part of which is shown in a sectional view.

FIG. 3 is a sectional view showing a fixing structure using a conventional concrete form fixing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 heat insulating form panel 11 a heat insulating material 11 b pier 12 form panel 12 a flat plate (weir board) 12 b pier 22 form tie (tightening member) 22 a female screw 22 b male screw 23 tightening washer 24 side end thick member (end thick member) 25 nut 31 Separator 31a Flange 32b Male thread 32 Attachment 32a Female thread 32b Insert 32c Flange 32d Male thread

Claims (4)

[Claims] 1. A heat insulating material comprising a hard foamed plastic board provided with a pier on one side thereof, a heat insulating formwork panel serving both as a concrete casting form and a heat insulating material, and a pier fixed to a weir plate. A concrete formwork fixing device for fixing a concrete formwork using a formwork panel, wherein a male screw part having a male screw is formed at both ends, and a flange part is formed at a base end of the male screw part. A rod-shaped separator, a cone member attached to the male screw portion of the separator disposed on the form panel side, and an insertion portion having a female screw screwed to a male screw of the male screw portion of the separator at an end portion. An attachment having a flange formed at the base end of the insertion portion, and a male screw portion formed on the opposite side of the flange from the insertion portion, and screwed into a male screw of the male screw portion of the attachment. A bar-shaped tightening member having a female screw at one end and having a male screw formed therein, a tightening washer inserted into the tightening member, and a nut screwed to the male screw of the tightening member. And the length of the male screw portion of the separator disposed on the heat insulation form panel side is set shorter than the thickness of the crosspiece of the heat insulation form panel, and disposed on the form panel side. The length of the external thread portion of the separator is set shorter than the length of the cone member. 2. A concrete formwork fixing structure using the concrete formwork fixing device according to claim 1, wherein an end of the separator on the heat insulation form panel side is provided on the heat insulation form panel side. The heat insulating material of the heat insulating form panel and the through hole of the crosspiece are inserted into the through hole, the flange portion of the separator abuts on the inner surface of the crosspiece, and the insertion portion of the attachment is connected to the crosspiece from outside of the crosspiece. The female screw of the attachment is screwed into the male screw of the male screw part of the separator in the crosspiece and tightened, and inserted between the flange part of the attachment and the flange part of the separator. The crosspiece is held, the female screw of the tightening member is screwed into the male screw of the male screw portion of the attachment, and tightened, and a tightening washer is mounted on the tightening member. A thick end material is sandwiched between the fastening washer and the crosspiece, and is fastened by a nut screwed into the male screw of the fastening member. The cone member is attached to the male thread portion of the separator on the panel side so as to be interposed between the flange portion of the separator and the inner surface of the weir plate, and the tip of the cone member is the inner surface of the weir plate. The insertion portion of the attachment is inserted from the outside of the weir plate into the through hole of the weir plate, and the female screw of the attachment is screwed into the male screw of the male screw part of the separator in the cone member. The dam plate is held between the flange portion of the attachment and the tip of the cone member, and the external thread of the external thread portion of the attachment is in front of the fastening member. A female screw is screwed and tightened, a tightening washer is inserted into the tightening member, a thick material is sandwiched between the tightening washer and the crosspiece, and screwed into the male screw of the tightening member. A concrete formwork fixing structure characterized by being fastened by a set nut. 3. A concrete formwork provided with a pier on one side of a heat-insulating material made of a hard-foamed plastic board and having a heat-insulating formwork panel serving as a concrete-forming formwork and a heat-insulating material arranged opposite to each other. A male thread part having male threads is formed at both ends, a flange part is formed at the base end part of the male thread part, and the length of the male thread part is equal to that of the heat insulating form panel. A rod-shaped separator set to be shorter than the thickness of the crosspiece, an insertion portion having a female screw screwed to the male screw of the male screw portion of the separator at a distal end portion, and a flange formed at a base end portion of the insertion portion And an attachment having a male screw portion formed on the opposite side of the flange portion from the insertion portion, and having, at one end, a female screw screwed to a male screw of the male screw portion of the attachment, A concrete mold comprising: a bar-shaped tightening member formed with: a tightening washer inserted into the tightening member; and a nut screwed into the male screw of the tightening member. Frame fixture. 4. A concrete formwork fixing structure using the concrete formwork fixing device according to claim 3, wherein an end of the separator is provided on each of the heat insulation form panel sides. The heat insulating material is inserted through the through hole of the pier, the flange of the separator is brought into contact with the inner surface of the pier, and the insertion portion of the attachment is inserted into the through hole of the pier from outside the pier. The female screw of the attachment is screwed and tightened to the male screw of the male screw part of the separator in the crosspiece, and the crosspiece is held between the flange portion of the attachment and the flange portion of the separator, The female screw of the tightening member is screwed into the male screw of the male screw portion of the attachment and tightened, and a tightening washer is inserted into the tightening member. TanFutoshizai is sandwiched, concrete form fixed structure, characterized by being clamped by the screwed nut on the external thread of the fastening member between the biasing washer and the 桟木.