JP3119117B2 - PC version driving formwork and formwork method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PC-plated formwork integrated with post-cast concrete and a formwork method using the formwork.

[0002]

2. Description of the Related Art A PC-plated formwork has been developed in order to reduce the labor required for formwork removal and to enhance the durability of the surface of a molded concrete structure. It is performed by the external supporting method like the general formwork.

[0005] FIG. 5 shows the assembled state. After assembling the rebar, the PC plate driving form 1 is assembled. In this assembling procedure, a hole 2 penetrating the inside and outside of the mold 1 is opened, and a separator 4 is screwed and connected to the inside of the hole 2 via a wooden concrete (or P-con) 3. A form tie 5 inserted from the outside of the form 1 through the hole 2 is connected to the other end side of the wooden concrete 3, and the vertical and horizontal ends forming an external supporter arranged outside the form 1 are connected. When the material 6 is fixed, the assembly is completed.

[0004] After the assembling work, the post-cast concrete C is cast, and after the concrete C is hardened, the foam tie 5 is removed and the support work such as the removal of the thick ends 6 is performed to remove the hole 2.
By performing the embedding work, a concrete structure in which the form 1 and the post-cast concrete C are integrally joined can be obtained.

In this method, in order to completely join the form 1 and the post-cast concrete C together, conventionally, a substantially U-shaped anchor 8 is insert-molded in the form 1 in advance. , The inner protruding end 8 of this anchor 8
a was bitten into the post-cast concrete C, thereby integrally joining.

[0006]

In the above-mentioned construction method, it is necessary to position and open a hole at a formwork installation site, which is inefficient and troublesome, and has problems in positioning accuracy, durability and the like. . In addition, in order to ensure a sufficient bonding strength with post-cast concrete, the number of anchors 8 to be buried must be increased, and the production is troublesome and expensive. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and saves time and labor for drilling holes on site, and integrates a PC-plate driving form with a post-cast concrete through a separator. P that can be joined
An object is to provide a C-plate driving formwork and a formwork method.

[0008]

In order to achieve the above-mentioned object, the present invention relates to a method in which a PC plate is used as a driving form.
In a PC plate driving formwork in which post-cast concrete is cast into the inside of the plate to achieve integration, the inside and outside of the PC plate are communicated with each other, and a separator is screwed and fixed on the inner surface side. and form tie is screwed on the outer surface side, of the pair on both sides of the hexagonal nut
Fixing bracket with integrated steel rod , the tip of which is the inner surface of the PC plate
PC in a state where it protrudes to the
The plate is buried integrally so as to form a hole opening outwardly (claim 1).

In this formwork method, the inside of a PC form driving formwork is provided, and its tip is formed inside the PC form.
In the state of protruding to the surface side, and P
The separator is screwed and connected to a fixing bracket in which a pair of steel rods are integrated on both sides of a hexagon nut embedded so that a hole opening outwardly is formed in the C plate. A thick material is arranged on the outer surface side of the plate driving formwork, and a form tie is screwed and connected to the outer surface side of the fixing bracket to fix the thick material to the outer surface of the PC plate driving formwork. (Claim 2).

[0010]

According to the first aspect of the present invention, the inside and outside of the mold communicate with each other through the fixing bracket, and the inner surface of the mold is connected to the separator, whereby the mold is integrally joined to the post-cast concrete via the separator.

According to the formwork method of the second aspect, the same formwork assembling and removing operations as in the prior art can be performed except that the separator is screwed and fixed to the buried metal fitting.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below in detail with reference to the drawings. 1 and 2 show a PC according to the present invention.
It shows a plate driving formwork. The driving form 10 shown in the figure comprises a PC plate main body 12 and fixing metal fittings 14 arranged at predetermined intervals in the vertical and horizontal directions of the PC plate main body 12 and communicating inside and outside of the PC plate main body 12.

The PC plate body 12 is made of a high-strength mortar 12a.
Aramid fiber net 12b and other reinforcing materials are integrated into the inside, and a polymer layer 12c for protecting the after-cast concrete is integrally impregnated on the inner surface, and the surface is formed into an arbitrary design pattern In this embodiment, as an example, a standard size having a width of 1.00 m, a length of 2.00 m, and a thickness of 53 is used.
mm, and the thickness of the polymer layer is set to 3 mm or more. Accordingly, the fixing brackets 14 are arranged in a total of six places in the vertical and horizontal directions.

The fixing bracket 14 is enlarged to a part of FIG. 2, and as shown in FIG.
a pair of steel rods 14b are integrated on both sides in parallel by welding 14c, and are buried with their tips protruding toward the inner surface side of the PC plate main body 12 to prevent the steel rods 14b from coming off. Anchor. Further, a hole 16 that opens outward is formed in the PC plate main body 12 continuously with the rear end of the fixing bracket 14.

Next, a method of assembling the above-described die driving formwork 10 will be described with reference to FIG.

First, a work scaffold is erected, and a reinforcing bar 1
8 is assembled, and then the formwork 10 is assembled. At this time,
The separator 20 is screwed into the screw hole of the fixing bracket 14 and joined to the opposite fixed end of the mold 10.

After that, a form tie 22 inserted from the outside of the mold 10 through the hole 16 is screwed and connected to the mold 1.
The assembly is completed by fixing the vertical and horizontal end thick members 24 constituting the external shoring arranged outside the zero.

After the assembling work, the post-cast concrete C is cast in the same manner as before, and after the concrete C has hardened, the foam tie 22 is removed, and the support work such as the removal of the thick ends 6 is performed. When the hole 16 is filled, the form 1
Thus, a concrete structure in which 0 and post-cast concrete C are integrally joined can be obtained.

[0019]

As described in detail in the above embodiment, according to the PC plate driving form according to the first aspect of the present invention, the inside and outside of the form communicate with each other through the fixing metal, and the inner surface side is connected to the separator. As a result, since it is integrally joined to the post-cast concrete via the separator, there is an advantage that a conventional insert fitting is not required and the joining strength to the post-cast concrete can be improved.

When the method of claim 2 is adopted, the same form assembling and removing operations as in the prior art can be performed, except that the separator is screwed into the buried metal fitting, and no drilling operation is required at the construction site. Therefore, there is an advantage that labor can be saved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing an inner surface side of a PC plate driving formwork according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a view showing a fixing bracket embedded in the same formwork.

FIG. 4 is an explanatory sectional view showing a procedure for constructing a concrete structure using the same formwork.

FIG. 5 is an explanatory cross-sectional view showing a procedure for constructing a concrete structure using a conventional PC plate driving formwork.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 10 PC plate driving formwork 12 PC plate main body 14 Fixture 16 Hole 20 Separator 22 Form tie 24 Thick material C Post-cast concrete

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 2/86 601 E04B 2/86 611

Claims (2)

(57) [Claims] 1. A PC plate driving form in which a PC plate is used as a driving form and a post-cast concrete is poured into the PC plate so as to achieve integration. While communicating inside and outside,
Separator is screwed on the inner surface side, and the form ties are screwed to the outer surface side, of the hexagonal nut both
Attach a metal fitting with a pair of steel bars integrated to the side
In the state that it protruded to the inner side of the PC plate, and at the rear end
Consecutive holes are formed on the PC plate that open outward.
As described above, the PC version driving formwork which is buried integrally. 2. A state in which a tip of a PC plate driving form is protruded toward the inner surface of the PC plate.
To the PC version in a continuous state and at the back end
Of the hex nut embedded so that the opening hole is formed
A separator is screwed and connected to a fixing bracket in which a pair of steel rods are integrated on both sides, and a thick material is disposed on the outer surface side of the PC plate driving formwork, and a foam tie is screwed and connected to the outer surface side of the fixing metal member. And fixing the thick material to an outer surface of the PC plate driving form by using a PC plate driving form.