JPH11350732A - Fixing structure of synthetic resin foamed form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing structure of a synthetic resin foaming body-made form for surely suppressing deformation by side pressure at the time of placing concrete of the synthetic resin foaming body-made form, eliminating a problem such as bite of a form fixing member by the form, and capable of the stable fixing of the form. SOLUTION: The front end of a connection tool 3 provided with a disk part 3a disposed in contact with the concrete placing side 1a of a synthetic resin foaming body-made form 1 is connected to the separator connection side part 2a of one end of a support shaft 2 penetrated in the form 1 for concrete placing, a separator 4 is connected to the rear end of the connection tool 3, and a disk-like form pressing plate 5 is fixed on the disposition side part 2b of the form tie (registered trademark) of the other end in contact with the concrete non-placing side 1b of the form 1. Furthermore, the form tie 6 is disposed on the edge side, and an end thick material 7 fixed by the form tie 6 is pressed on a form pressing plate 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a formwork made of a synthetic resin foam, and is particularly suitably used for concrete placement of a cloth foundation such as a house and concrete placement in a waste formwork. The present invention relates to a fixing structure for a synthetic resin foam mold.

[0002]

2. Description of the Related Art Conventionally, as a foundation for a cloth of a house or the like, a discarded concrete is poured on a hardened split stone,
Further, a footing portion is formed thereon, and a rising portion is further erected thereon, or a footing portion and a rising portion are formed at once, and the base is fixed with an anchor bolt fixed to the rising portion. The structure which is used is often used.

[0003] The concrete casting of the cloth foundation is carried out by placing a wooden frame or the like facing each other, holding the space by a separator, and suppressing the deformation due to lateral pressure by a thick material in the space formed by the concrete. After setting and curing, the work is performed by removing these molds and members, and the assembling work of the molds at that time requires skill, and the formwork itself may be heavy including the dismantling work. It takes time and effort. On the other hand, in recent years, due to the problem of depletion of wood resources, synthetic resin foam molds that can reduce the weight of the mold itself have begun to be used. Further, from the viewpoint of energy saving, the synthetic resin foam mold has been used. A method of imparting heat insulation to a concrete foundation by leaving a frame without being dismantled after casting and hardening the concrete, that is, a so-called discarding mold method, has attracted attention, and the use of a synthetic resin foam mold has been rapidly increasing.

[0004] However, since the synthetic resin foam mold has a lower rigidity than a wooden mold, the side of the mold swells due to lateral pressure during concrete casting. Although measures such as narrowing the installation interval of the separator and the thick material are applied compared with the case of the conventional wooden formwork, the outer surface side of the formwork of the separator bites into the formwork, and the thick material becomes the formwork. At present, it cannot be said that the formwork has been stably fixed at the time of placing concrete.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned situation, and it is intended to surely suppress deformation of a synthetic resin foam mold due to lateral pressure at the time of casting concrete and to fix a mold fixing member. It is an object of the present invention to provide a fixing structure for a synthetic resin foam mold, which eliminates problems such as biting into the mold and enables stable fixing of the mold.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a separator connecting side of one end of a support shaft penetrated by a synthetic resin foam mold for concrete casting, and to a concrete casting side of the mold. The front end of the connector having a disk portion disposed in contact with the front end is connected, the separator is connected to the rear end of the connector, and the other side of the form tie is connected to the concrete of the formwork. A disc-shaped form holding plate is fixed in contact with the non-implanted side surface, and a foam tie is further provided on the tip side thereof, and a thick material fixed by the form tie is provided on the form holding plate. The gist is a structure for fixing a synthetic resin foam mold that is pressed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 is a side view showing one embodiment of a fixing structure of a synthetic resin foam mold according to the present invention, and FIG. II-II of 1
It is a line sectional view.

In FIG. 1 and FIG. 2, the fixing structure of a synthetic resin foam mold of the present invention is penetrated by a synthetic resin foam mold 1 for concrete casting, which is installed so as to be connected to each other. At one end of the support shaft 2 on the separator connection side 2a,
A front end of a connector 3 having a disk portion 3a disposed in contact with a concrete casting side surface 1a of the form 1 is connected, a separator 4 is connected to a rear end of the connector 3, and the other end. On the side of the form tie arrangement 2b, a disc-shaped form retainer plate 5 is fixed in contact with the non-concrete casting side surface 1b of the form 1, and a form tie 6 is arranged on the tip side thereof. The thick end 7 fixed by the foam tie 6 is pressed onto the form holding plate 5.

Here, the form 1 is 600 mm × 900 m.
m, a thickness of about 10 to 100 mm is made of a synthetic resin foam plate-like body, as a synthetic resin constituting the foam, for example, polystyrene, polyethylene, polyolefins such as polypropylene and the like It is mentioned as a typical thing.

The support shaft 2 penetrated by the mold 1 is made of a metal rod and has a plurality of positions per one mold plate.
In the case shown in the figure, it is used at four places. A male screw is engraved at the end of the separator connection side 2a at one end of the support shaft 2 and is disposed in contact with the concrete casting side surface 1a of the form 1 and has a diameter of about 20 to 200 mm. Part 3a
Metal fitting 3 having a female screw engraved in the center thereof
And the front end of the connector 3 is connected to the female screw, and a male screw engraved at the tip of the separator 4 is screwed to the female screw at the rear end of the connector 3. 4 are connected.

A male screw is engraved on the other side 2b of the support shaft 2 where the form tie is provided, and a disc-shaped form holding plate 5 is brought into contact with the non-concrete casting side face 1b of the form 1. The foam tie 6 is fixed by being clamped between the two nuts 5a, 5a and further connected to the distal end thereof.
As a result, the two thick end members 7, 7 are arranged side by side with the support shaft 2 interposed therebetween, and are fastened by washers 6a.
It is pressed upward and fixed with a nut 6b.

Here, the disc-shaped frame holding plate 5 is made of metal, resin or the like, and has a diameter of about 20 to 200 mm and is not limited in thickness, but is preferably about 1 to 5 mm. . Further, the end thick member 7 is preferably a metal pipe having a diameter of about 50 mm, but is not limited to this, and may be a square pipe or a square material.

In the above embodiment, the support shaft 2
However, a male screw for connecting the connector 3 is engraved on the separator connection side 2a at one end, and the form holding plate 5 is fixed and the form tie 6 is connected on the other end of the form tie arrangement side 2b. Although the example in which one male rod is engraved with a male screw has been described, the center of the form holding plate 5 is a connection part provided with a female screw, and the form tie arrangement side 2b of the support shaft 2 is formed. It may be formed by cutting and separately connecting the supporting shaft for connecting the form tie 6 to the female screw by a method such as connecting the female screw.

In the above-described embodiment, the thick ends 7 are
Two pieces per form tie were fixed side by side only in the horizontal direction. However, it may be fixed in a double form in the vertical and horizontal directions. It is preferable that the fixing member is fixed in the horizontal direction, but it is necessary to fix the fixing member so as to be pressed onto the above-described form holding plate 5 regardless of the length and width of the direction.

The above described fixing structure of the synthetic resin foam form of the present invention is suitably used particularly for a cloth foundation of a house or the like or a concrete casting at a rising portion thereof.
It is also suitable for placing concrete in the throwaway form method.

[0016]

According to the present invention, the deformation of the synthetic resin foam mold due to the lateral pressure at the time of concrete casting is reliably suppressed, and the problem of the mold fixing member being entangled in the mold is eliminated. It is possible to provide a fixing structure for a synthetic resin foam mold that enables stable fixing of the frame.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a fixing structure of a synthetic resin foam mold according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

 Reference Signs List 1: Form frame made of synthetic resin foam 1a; Concrete casting side surface 1b; Concrete non-casting side surface 2; Support shaft 2a; Separator connection side 2b; Form tie arrangement side 3; Separator 5; Form holding plate 5a; Nut 6; Form tie 6a; Washer 6b; Nut 7;

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI E04B 2/86 611P

Claims (5)

[Claims] 1. A disc portion disposed on a side of a separator connecting side of one end of a support shaft penetrated by a synthetic resin foam mold for concrete casting and in contact with a concrete casting side surface of the mold. The front end of the connection tool having a connection is connected, the separator is connected to the rear end of the connection tool, and the other side of the form tie arrangement side is in contact with the non-concrete casting side surface of the formwork and the disk A form-holding plate is fixedly provided, furthermore, a form tie is disposed on the tip side thereof, and a thick material fixed by the form-tie is pressed onto the form-holding plate. The fixing structure of the synthetic resin foam form. 2. A male screw for connecting a connecting tool is engraved on one side of a separator connecting side of the supporting shaft, and a form tie connection and a form tie plate fixing plate are fixed on the other side of the supporting shaft. The fixing structure for a synthetic resin foam mold according to claim 1, comprising one metal rod engraved with an external male screw. 3. The fixing structure for a synthetic resin foam form according to claim 1, wherein two end members are fixed side by side with the support shaft interposed therebetween. 4. The fixing structure for a synthetic resin foam mold according to claim 1, wherein the mold is for forming a fabric base. 5. The fixing structure for a synthetic resin foam mold according to claim 1, wherein the mold is for a waste mold.