JPH11343736A - Fixing device for concrete pouring form and form fixing method using thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form fixing device for concrete pouring and a form fixing method using thereof which is capable of surely suppressing deformation by the side pressure of a concrete pouring form and of easily fixing the form. SOLUTION: A fixing device 1 for concrete pouring form having a hat-shaped longitudinal section comprising a top portion 2 crossing between both the tops for preventing the opening of both the top portions of a concrete pouring form located oppositely, two side face portions 2, 2 having batter-linking pieces 3a projected out almost with L-shape for laying a batter at the surface side which are extended down to both the end edges 2a, 2a of a top surface portion 2 for preventing the swelling of both the ends of the form and installed in series, and a leg portion 4 attached in series outwardly to the end 3a of the side face portion 3 for fixing itself to the installation surface, and a plurality of the fixing devices of the concrete pouring form are covered from both the top portions of the concrete pouring form installed oppositely and both leg portions are respectively fixed to the installation surface. Then, the batter is horizontally laid to the batter-linking piece at both the side face portions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture for a concrete casting formwork and a method for fixing the formwork using the same.
In particular, the present invention relates to a fixture for a concrete casting formwork, which is preferably used for concrete placement of a rising portion of a cloth foundation of a house or the like, and a formwork fixing method using the same.

[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, there is often used a structure in which a footing portion is cast thereon, a rising portion is further raised thereon, and a base is fixed by anchor bolts fixed to the rising portion.

[0003] In the concrete casting of the rising portion of the foundation of the cloth, a space formed by placing a formwork made of wood or the like facing each other, holding the interval by a separator, and suppressing deformation due to lateral pressure by a thick end member. After the concrete is cast and hardened, it is done by the work process of removing these molds and members, and the assembling work of the molds at that time requires skill, and the molds themselves are heavy including the dismantling work. In some cases, it is time-consuming. 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. It is necessary to take measures such as narrowing the interval between the separators and the thickened members as compared with the case of the conventional formwork made of wood or the like, and it takes more time to assemble or disassemble the formwork.

[0005]

DISCLOSURE OF THE INVENTION In view of the above-mentioned prior art, the present invention provides a concrete casting mold capable of reliably suppressing deformation due to lateral pressure of a concrete casting mold and fixing the mold easily. It is an object of the present invention to provide a fixing device of the present invention and a method of fixing a formwork using the fixing device.

[0006]

According to the present invention, there is provided a concrete casting formwork which is installed opposite to a top surface portion which is bridged between the tops to prevent the two tops from being opened. End piece engaging pieces which are respectively suspended and provided at both end edges of the top surface part in order to prevent swelling of the top part, and are protruded in a substantially L-shape so as to bridge the end material on the surface side. Concrete casting, having a hat-shaped longitudinal section, comprising two side portions having the following shape, and legs respectively connected outwardly at ends of the side portions to fix itself to the installation surface. A plurality of fixtures for the formwork for concrete and the formwork for concrete casting are covered from both tops of the formwork for concrete placement which is installed facing each other, and both legs are placed on the installation surface. While fixing, the concrete thickening Fixation of the punching 設用 mold, is referred to as gist.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 shows one embodiment of a fixture for a concrete casting formwork of the present invention, (a) is a front view thereof, and (b) is a front view thereof. ) Is a side view thereof, FIG. 2 shows another embodiment of a fixture for a concrete casting formwork of the present invention, (a) is a front view thereof, and (b) is a front view thereof.
FIG. 3 is a side view thereof, and FIG. 3 shows an embodiment for explaining a method for fixing a formwork using the fixture for a concrete formwork of the present invention. (B) is a side view of a state in which the formwork fixing device of the present invention is used.
(A) It is BB sectional drawing of the figure.

In FIG. 1 and FIG. 2, a fixture 1 for a concrete casting form according to the present invention is used to prevent the two tops of concrete placing forms installed opposite each other from opening. In order to prevent swelling of both sides of the same formwork, the top surface portion 2 is suspended from both end edges 2b, 2b of the top surface portion 2, and a thick material is laid on the front surface side. Side surfaces 3 and 3 having a thick end locking piece 3a protruding substantially in an L-shape, and an outer end 3b of the side surface 3 to fix itself to an installation surface. And has a hat-shaped longitudinal section.

Here, the fixture 1 of the concrete casting formwork includes a top surface portion 2, both side surface portions 3, 3 and a thick end locking piece 3.
a, 3a, and both legs 4, 4, for example, have a width of 10
It is formed of a strip-shaped metal plate having a thickness of about 200 mm and a thickness of about 1 to 5 mm. The overall dimensions are, for example, about 230 mm in length of the top part 2, about 600 mm in both side parts, about 50 mm in length of both legs, The protruding length of the thick locking piece is about 50mm,
The height is about 100 mm.

In both the embodiments shown in FIGS. 1 and 2, there are provided two thick end locking pieces 3a for the side portion 3 per side portion 3, which are usually one to three. It can be appropriately selected within the range. Formwork fixing pieces 2a, 2a for fixing the formwork from the inner surface are protruded at a height of about 20 mm at two places corresponding to a substantially formwork thickness on the back side of the top surface portion 2. .

Also, in the embodiment shown in FIG.
In addition, ribs 5 are vertically suspended at a height of about 50 mm in a direction transverse to the mold on the respective surface sides of the side portions 3 and 3, and the rigidity of the mold 1 itself is enhanced.

The method for fixing a concrete casting formwork of the present invention using the concrete casting formwork fixing tool 1 of the present invention is shown in FIG. As shown in the example of casting, separators (not shown) are added to concrete casting molds 10 and 10 which are installed opposite to the previously formed footing portion 13 of the cloth foundation, as required. Are installed at predetermined intervals, and then a plurality of fixtures 1
Cover the molds 10, 10 from both the tops 10a, 10a at intervals of m, and attach the two legs 4, 4 to fixing holes (not shown).
And nails are fixed to the installation surface of the footing portion 13 and the like, and the end thick members 11, 11 such as metal pipes are laterally mounted on the end thick engaging pieces 3a, 3a of the both side portions 3, 3, Thereafter, ready-mixed concrete is cast into the formed concrete casting space 12. At this time, a small-diameter pipe or the like is inserted at both ends of the thick material 11 and the portion is locked with the thick material locking piece 3a, so that the mold of the portion where the fixture 1 of the present invention is not installed is formed. The outer peripheral surface of the thick material 11 can be brought into close contact with the outer surface of the frame 10.

Thus, the fixture 1 of the concrete casting formwork of the present invention and the method of fixing the formwork using the same include the opening of the tops 10a and 10a of the forms 10 and
It is possible to reliably suppress deformation such as bulging of the molds 10b and 10b and to easily fix the molds 10 and 10.

In FIG. 3, ribs 5 are provided on the top surface 2 and on both surface portions 3 and 3 in the direction transverse to the mold.
Although the example using the fixing tool 1 shown in FIG. 1 in which the ribs are provided is shown, when the fixing tool 1 shown in FIG. The number of the thick ends 11 laid horizontally on the 3a is two per locking piece 3a, and the joining positions of the ends of the adjacent thick ends 11 are shifted between the two ends. By doing so, more reliable linearity can be imparted to the installed molds 10 and 10.

Although not shown, the footing unit 1 is not shown.
In mounting the molds 10 and 10 on the upper part 3, a plurality of metal fittings of a predetermined width having shallow grooves having a width corresponding to the thickness of the mold at both ends are fixed to the footing part at predetermined intervals on the lower surface of the mold. At the same time, by fitting a resin base joiner with a cross-sectional shallow groove rail shape with a width equivalent to the thickness of the mold to both shallow grooves, and fitting the lower surface of the mold to the base joiner, Reliable linearity can also be provided.

The fixture for a concrete casting formwork of the present invention and the method for fixing a formwork using the same according to the present invention are particularly suitably used for concrete placing at the rising portion of a cloth foundation such as a house. Further, it is suitably used when the mold is made of a synthetic resin foam such as a polystyrene foam or a polyethylene or polypropylene foam.

[0017]

According to the present invention, there is provided a fixture for a concrete casting formwork capable of reliably suppressing deformation of the concrete casting formwork due to lateral pressure and easily fixing the formwork, and using the same. Formwork fixing methods can be provided.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a fixture for a concrete casting formwork of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 2 shows another embodiment of the fixture for a concrete casting formwork of the present invention, wherein (a) is a front view thereof and (b) is a side view thereof.

FIG. 3 shows an embodiment in which the formwork fixing device of the present invention is used for a concrete casting formwork, (a) is a side view thereof, and (b) is a BB line of (a) view. It is sectional drawing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Fixing tool of concrete casting formwork 2; Top face 2a; Formwork fixing piece 2b; Edge 3; Side face 3a; Frame 10a; Top 10b; Side 11; Thick material 12; Space for concrete casting 13; Footing part n;

Claims (7)

[Claims] 1. A method for preventing the tops of a concrete casting form installed opposite to each other from opening at both tops and a top surface spanning between the tops, and preventing swelling at both sides of the same formwork. Two side portions each having a thick end locking piece that is suspended and connected to both end edges of the top surface portion, and is protruded in a substantially L-shape to hang the thick end on the surface side; A concrete casting formwork having a hat-shaped longitudinal section, comprising legs connected to the outside of the end of the side portion to fix itself to the installation surface. Fixtures. 2. The fixing tool for a concrete casting formwork according to claim 1, wherein the top face, both side faces and the end piece of the thick material, and both legs are formed of a band-shaped metal plate. 3. A form fixing piece for fixing a form from an inner surface thereof at two places on the back side of the top surface corresponding to substantially the form thickness. A fixture for concrete formwork. 4. The concrete casting formwork according to claim 1, wherein a rib is vertically provided in a direction crossing the formwork on each surface side of the top surface portion and both side surface portions. Fixture. 5. A concrete casting formwork fixing tool according to any one of claims 1 to 4, which is covered from both tops of the concrete casting formwork installed opposite to each other. A method for fixing a concrete casting formwork, comprising fixing both legs to the installation surface, and bridging the thick material on the thick material locking pieces on both side surfaces. 6. The method for fixing a concrete casting formwork according to claim 5, wherein the formwork is for forming a rising portion of the cloth foundation. 7. The method according to claim 5, wherein the form is made of a synthetic resin foam.