JPH1113179A - Placing joint method of foam synthetic resin-made concrete form plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the placing joint method of a form plate wherein rise and placing joint of the form plate is facilitated, horizontal precision of a concrete face is enhanced, and which has effect of prevention of spalling of lowermost form plate at the time of placing concrete, facility of work and waterproofing impart in the case where a foam synthetic resin-made concrete form plate is used for concrete wall construction. SOLUTION: An expansion seal material 2 is laid on a concrete foundation 11, a metal-made liner 3 provided with a U-shaped form plate fitting part is mounted thereon to be fixed on the concrete foundation 11 by a concrete nail 4, and a form plate 5a is fitted to a U-shaped fitting part. U-shaped form plate fitting parts 6, 6 are vertically provided on the outside uppermost form plate 5a, and connected through a metal-made liner 8' providing joint-like slits 7, 7 between the vertical U-shaped form plate fitting parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining formwork plates when constructing a concrete structure using a concrete formwork plate made of a foamed synthetic resin.

[0002]

2. Description of the Related Art Recently, as a concrete foundation formwork,
There is an inner / outer foam synthetic resin concrete form plate joined through a synthetic resin separator / connecting member, but since the inner and outer form plates are constructed simultaneously, the reinforcing bar reinforcement method, inspection method, etc. However, it is used only for concrete structures having a low height such as foundation formwork.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a foamed synthetic resin concrete formwork in the case where the foamed synthetic resin concrete formwork plate used as the concrete foundation formwork is used for constructing a concrete wall. It is an object to provide a method for joining boards.

[0004]

When a foamed synthetic resin concrete formwork plate is used as a concrete foundation formwork plate, no problem occurs, but when used for concrete wall construction, the concrete surface is not flat. Therefore, there is a problem that the lowermost form plate cannot be leveled, and a problem that the lowermost form plate is subjected to fresh concrete pressure at the time of wall concrete casting, which may cause the form plate to burst outward. there were.

The present invention proposes a joint method for solving these problems. The first invention is to lay an expansion sealing material on a concrete surface and fit a U-shaped form plate on the surface. A foamed synthetic resin characterized in that a metal or synthetic resin liner having a section is mounted thereon and fixed on the concrete surface with concrete nails or the like, and a lower edge of a foamed synthetic resin concrete form plate is fitted to the liner. This is a method for joining concrete form plates made of resin.

In a second aspect of the present invention, an upper edge of a foamed synthetic resin concrete form plate inside or outside a concrete wall formed by using a foamed synthetic resin concrete form plate is provided.
A foam synthetic resin concrete form plate characterized by connecting a higher-order foam synthetic resin concrete form plate via a metal or synthetic resin liner provided with upper and lower U-shaped form plate fitting portions. It is a connection method.

In a third aspect of the present invention, a foamed synthetic resin concrete form plate on the inside or outside of a concrete wall formed by using a foamed synthetic resin concrete form plate is provided.
Upper and lower foam synthetic resins are provided via a metal or synthetic resin liner having upper and lower U-shaped frame plate fitting portions and a joint-like slit provided between the upper and lower U-shaped frame plate fitting portions. This is a method for connecting a foamed synthetic resin concrete formwork, characterized by connecting concrete formwork plates.

[0008]

According to the first aspect of the present invention, the formwork plate is fixed firmly horizontally on the concrete surface, and at the same time, the bursting at the time of casting the wall concrete is prevented. In addition, a waterproof property is provided between the form plate and the concrete surface by the expansion seal material.
Further, when the formwork is installed, the horizontal accuracy of the concrete is important, but this construction accuracy is easily obtained.

According to the second aspect of the present invention, since the upper and lower form plates are connected by a metal or synthetic resin liner, the workability is improved.

According to the third aspect of the present invention, when this is applied to, for example, the joining of one form plate provided on the floor, the slit of the liner serves as a ruler when ironing the concrete surface, and the horizontal surface of the concrete surface is used. Since the accuracy can be improved, the mounting accuracy of the other form plate is easily obtained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the first invention, wherein 1 is a mounting surface of a form plate such as a concrete foundation or a concrete slab, 2 is a butyl rubber-based expansion seal material, and 3 is an expansion seal material. 2 is a metal liner having a U-shaped cross section of a form plate fitting portion fixed on the form plate mounting surface 1 with concrete nails 4 or the like, and 5 is a lower edge fitted to the form plate fitting portion. This is a foamed polystyrene concrete form plate fixed with an adhesive.

The joint structure (method) of the form plate is such that when wall concrete is cast, waterproofing between the form plate 5 and the form mounting surface 1 and between the liner 3 and the form plate 5 are performed by the expansion seal material 2. In addition, the liner is easily provided with horizontal accuracy, and the liner is fixed to the concrete surface with concrete nails or the like, so that the liner does not burst outward due to fresh concrete pressure.

FIG. 2 shows an embodiment of the second invention.
The upper and lower frame plates 5, 5 'are connected by an H-shaped steel liner 8 having upper and lower U-shaped frame plate fitting portions 6, 6. It should be noted that an adhesive is used to impart waterproofness at the time of joining.

FIG. 3 shows an embodiment of the third invention. A metal liner 8 having slits 7, 7 jointed between U-shaped form plate fitting portions 6, 6 provided vertically. The upper formwork plate 5 'is connected to the lower formwork plate 5' using an adhesive.

[0015] This joining method is used when the upper surface of a concrete slab described below is to be ironed.
Works as a ruler, and has the effect of facilitating the work for obtaining the horizontal accuracy of the concrete surface.

FIG. 4 is a longitudinal sectional side view of a concrete building to which the first invention and the third invention are applied, wherein 11 is a concrete foundation and 12 is a concrete slab.

The concrete wall 13 is assembled with reinforcing bars 14, and the inner and outer form plates 5a and 5b are set up on both sides thereof by the joint method according to the first invention shown in FIG. Are connected by a connecting member (not shown) to form a concrete formwork, and concrete is poured into the inside thereof to form a concrete wall 13. The form plates 5a and 5b after the construction of the concrete wall are left as they are and are not removed because they are used as heat insulating materials. When fitted to the liner, they are adhered with an adhesive, and the stacked form plates are adhered with an adhesive so as to have waterproofness.

After constructing the concrete wall 13, a receiving piece 15 is attached to the top of the inner form plate 5b, a flat deck 16 is erected on the receiving piece 15, and a ceiling heat insulating material 17 is laid thereon, and After arranging the reinforcing bars 19, concrete is poured and the concrete slab 12 is completed.

Next, when constructing the second-floor concrete wall, the outer form plate 5a is set up by the joint method according to the third invention shown in FIG. 1
According to the first aspect of the present invention, a concrete wall of the second floor is constructed by starting up and assembling a formwork and then pouring concrete. If the liner 8 'is attached to the outer form plate 5a before casting the slab concrete, the liner 8' can be used for finishing the surface of the slab concrete.
The slit 7 serves as a ruler, and the ironing can be performed very easily and quickly. If the finishing accuracy of the upper surface of the slab concrete is improved, the mounting accuracy of the inner form plate 5b installed on the floor can be obtained.

[0020]

According to the present invention, it is easy to set up and join a form plate, and to improve the horizontal accuracy of a concrete surface.
Also, prevention of rupture of the lowermost form plate when casting wall concrete,
This has the effect of facilitating the work of leveling the form plate and imparting waterproofness.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the first invention.

FIG. 2 is a perspective view showing an embodiment of the second invention.

FIG. 3 is a perspective view showing an embodiment of the third invention.

FIG. 4 is a vertical sectional side view of a concrete building constructed by applying the first and third inventions.

[Explanation of symbols]

 2 Expansion seal material 3 Metal liner 4 Concrete nail 5a, 5b Form plate 6 Form plate fitting part 8 Liner 11 Concrete foundation

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

Claims (3)

[Claims] 1. An expansion sealing material is laid on a concrete surface, and a metal or synthetic resin liner having a U-shaped form plate fitting portion is placed thereon and fixed on the concrete surface with concrete nails or the like. And a lower end of the foamed synthetic resin concrete form plate is fitted to the metal or synthetic resin liner. 2. A vertically shaped U-shaped form plate fitting portion is provided on the upper edge of a foamed synthetic resin concrete form plate inside or outside a concrete wall formed by using a foamed synthetic resin concrete form plate. A method for joining a foamed synthetic resin concrete form plate, comprising connecting a higher-order foamed synthetic resin concrete form plate via a provided metal or synthetic resin liner. 3. An upper and lower U-shaped form plate fitting portion is provided on an upper edge of a foamed synthetic resin concrete form plate inside or outside a concrete wall formed by using a foamed synthetic resin concrete form plate. It is characterized in that a higher-order foamed synthetic resin concrete formwork plate is connected via a metal or synthetic resin liner provided with joints between the upper and lower U-shaped formwork plate fitting portions. Method of concrete form plate made of foam synthetic resin.