JP2000240197A - Structure for supporting lower end part of form panel for placing concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability by enabling the fixation of form panels at right angles with a floor slab at the site of positioning form panels and the hammering-in of nails. SOLUTION: In this lower end part supporting structure, a wall is formed on a concrete floor slab 1. In this case, a form panel 2 in which a plastic cellular material 2B is filled in a plastic hollow mold 2A is positioned. Then an L-shaped angle member 3 is brought into contact with the floor slab 1 and the lower end part of the positioned form panel 2 on the opposite side to the side 10 in which concrete is placed, and nails 4 are hammered in the form panel 2 and the floor slab 1 from the outside of the angle member 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a lower end portion of a concrete formwork panel in a concrete frame work performed when constructing a heat storage tank used as a cooling and heating facility of a building.

[0002]

2. Description of the Related Art Conventionally, a panel made of plastic is used as a concrete molding form panel, and a wall for heat insulation which is not removed after hardening concrete is described in JP-A-7-102824. It has been known. This is because foams such as butane and pentane are formed on plastic foams such as styrene homopolymer, styrene-maleic anhydride, styrene-acrylonitrile, and styrene-methyl methacrylate copolymer particles. Beads obtained by pre-expanding the expandable resin particles containing the material, filling in the cavity of the mold, and heating and expanding with a heating medium, and having an expansion ratio of about 10 to 20 times. It is. A fixing device is attached to such a form panel, and the fixing device has a locking portion embedded in concrete to be cast. When a form panel made of foam is built, it is supported by end pipes and separators arranged vertically and horizontally.

[0003]

In a conventional foam panel made of a foam, no attempt is made to make a right angle with the floor slab on the lower end side which is placed on the floor slab after being built. It has poor strength and durability, and has the drawback that it is not useful to drive nails.

In view of the above, the present invention provides a concrete casting mold which can be fixed at a right angle to a floor slab at the site of the work of setting up a formwork panel, and in which nails can be driven to improve workability. An object of the present invention is to provide a lower end support structure of a frame panel.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a support structure for a lower end portion of a concrete driving form panel for forming a wall on a concrete floor slab. A form panel filled with a plastic foam is erected in the interior of the slab, and an L-shaped angle member is applied to a lower end portion of the erected form panel opposite to the concrete-implanted side and the floor slab. Nails were driven into formwork panels and floor slabs from outside.

[0006]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment shown in FIG. 1, in order to support a lower end portion of a concrete formwork panel 2 for forming a wall on a concrete floor slab 1, the concrete form side of the built formwork panel 2 is supported. An L-shaped angle member 3 is applied to the lower end opposite to 10 and the floor slab 1, and a nail 4 is driven into the form panel 2 and the floor slab 1 from outside the angle member 3. The form panel 2 has a plastic foam 2B inside a plastic hollow molded product 2A.
Is filled.

In FIG. 2, separators 5 are used to keep the facing form panels 2 at a predetermined distance, and joiners 6 are attached to both ends of the separators 5.
, A separator shaft 7 penetrating the form panel 2 is attached, and a foam tie 8 is attached to the separator shaft 7. At this time, what faces the form panel 2 is not the same form panel, but may be a plywood or metal foam. Outside the form panel 2, end steel pipes 9, 11 are provided in the vertical and horizontal directions, and support the form panel 2.

FIG. 3 is a plan view of the form panel 2, in which a plurality of holes 12 for inserting the separator shaft 7 to be attached to the joiner 6 are formed, and a groove 13 is formed along the periphery. The formation of the groove 13 prevents the corners and peripheral edges of the blow molded article 2A from being rounded.

FIG. 4 is a sectional view taken along line AA of FIG.
And the groove 13 are shown. Formwork panel 2
Is a blow-molded plastic hollow molded article 2A filled with a plastic foam 2B. The depression 14 in which the hole 12 is formed can be easily formed by designing a mold at the time of blow molding. The same applies to the groove 13. The foam 2B is foamed by putting a foaming material, for example, beads inside, at the time of blow molding the hollow molded article 2A, and the foam 2B is fused to the hollow molded article 2A. Such a mold panel 2 is blow-molded into a hollow molded product 2A using, for example, polyethylene, and simultaneously foamed with polyethylene beads inside. Foam 2B
And the thickness of the hollow molded article 2A is set to 0.2 mm or more.
If a 5mm or more, a flexural modulus of 1500 kgf / cm ² or more, a flexural strength of 30 kgf / cm ² or more was gravity 0.2. The size of the panel at this time is 60 cm x 18
0 cm. The thickness was 50 mm. Hollow molded product 2A
As the material of the foam 2B, an olefin-based resin other than polyethylene can be suitably used. As the foam 2B, polyurethane, polypropylene, polystyrene, or the like can also be used. The thickness of the hollow molded product 2A is 0.2
７7 mm, preferably 0.5-4 mm.

The angle member 3 is made of a hard material so as to form a right angle between the floor slab 1 and the formwork panel 2. As a material suitable for use, aluminum is lightweight, easy to handle and excellent. Holes for driving nails 4 are appropriately formed in the aluminum angle member 3 in advance. If the nail 4 to be driven into the floor slab 1 is a nail for concrete, it can be easily driven on site. Further, even when the nail 4 is driven into the form panel 2 as described above, a situation in which the nail does not work unlike the conventional foam does not occur.

FIG. 5 shows a connection point between the form panels 2, in which an H-shaped joint member 15 is arranged at a butt portion, and a nail is hit on the floor panel 2 from outside the joint member 15.

[0013]

As described above, according to the present invention, in the support structure at the lower end portion of the concrete driving form panel for forming the wall on the concrete floor slab, the plastic is formed inside the hollow plastic molded product. A form panel filled with foam is erected, and an L-shaped angle member is applied to the lower end portion of the erected form panel opposite to the concrete driving side and the floor slab, and the mold is formed from outside the angle member. Since nails were driven into the frame panel and the floor slab, it was ensured that the form panel was erected so that the floor slab and the form panel were at right angles. Work efficiency is good because it can be done.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an upper side of a form panel.

FIG. 3 is a plan view of a form panel.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a side view showing an example of joining between form panels.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor slab 2 Form panel 2A Hollow molded product 2B Foam 3 Angle member 4 Nail 10 Concrete driving side

Claims (1)

[Claims] 1. A supporting structure for a lower end portion of a concrete driving form panel for forming a wall on a concrete floor slab, wherein a form panel filled with a plastic foam is buried inside a plastic hollow molded article. An L-shaped angle member was applied to the lower end of the built form panel opposite to the concrete driving side and the floor slab, and nails were driven into the form panel and floor slab from outside the angle member. The support structure for the lower end of the concrete formwork panel.