JPH1037380A - Molded concrete building panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete building panel molded as integral part of a steel frame and increase the holding power of concrete for the steel frame. SOLUTION: A molded concrete building panel 15 is formed out of concrete 13 placed in space enclosed with an outer form placed on a ruler table, and a recess rimmed with a steel frame 17 is formed on the reverse side of the building panel 15 having a surface in contact with the ruler table as an upper surface 14. In this case, the concrete thickness of the recess 18 is made smaller than the peripheral part 16 of the building panel 15. Also, a channel is used for the steel frame 17, with the web 20 thereof directed to the thicknesswise direction 19 of the building panel 15. In addition, a flange 22 forming the upper surface of the building panel 15 is buried in concrete on the bottom of the recess 18. According to this construction, the concrete of the recess 18 is reinforced, due to the flange 22 buried therein, and an anchor can be thereby eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to molded concrete which is formed by casting concrete in a space surrounded by an outer formwork set on a surface plate, and whose surface is in close contact with the surface plate. It relates to building panels.

[0002]

2. Description of the Related Art A molded concrete building panel 29 incorporating a steel frame 28 is provided with an inner mold 30 and an outer mold 1 in a space surrounded by an outer mold 12 installed on a surface plate 11.
2 (FIG. 4 (a)), and the mortar 1 is placed in the peripheral space between the outer mold 12 and the inner mold 30.
At the same time, the mortar 13 is cast in the internal space surrounded by the inner mold frame until the bottom surface of the inner mold frame 30 is reached, and is temporarily cured (FIG. 4 (b)). , Inner formwork 3
In FIG. 4 (c), a steel frame 28 having a fixing anchor (rebar) 32 protruding downward is placed (FIG. 4 (d)). The bonding pad 33 was raised and constructed (Fig. 4
(E) The mortar 13 previously cast is fully cured, and the outer mold 12 is removed from the mold.

In this conventional method, it has been pointed out that the curing process and the demolding process are duplicated, the process management becomes complicated, and the irregularities on the back surface of the molded concrete building panel 29 are conspicuous and the appearance is poor.

[0004]

The inventor of the present invention attaches the anchor 32 to the inner frame, and installs the inner frame in the space surrounded by the outer frame 12 while also using the steel frame 28 ( FIG. 3 (a)), the fixing anchor 32 as it is.
Was attempted to be embedded in the mortar 13, but the joint strength between the anchor 32 and the concrete 13 was insufficient and further improvement was required.

[0005]

OBJECTS OF THE INVENTION Accordingly, it is a first object of the present invention to provide a molded concrete building panel integrally formed with a steel frame.

A second object of the present invention is to increase the holding power of a steel frame by concrete of a molded concrete building panel.

A third object of the present invention is to facilitate installation of a steel frame also serving as an inner mold in a space surrounded by an outer mold.

[0008] A fourth object of the present invention is to facilitate the lifting, movement and transportation of manufactured molded concrete building panels.

[0009]

According to the present invention, concrete is formed by casting concrete in a space surrounded by an outer mold provided on a surface plate, and a surface in close contact with the surface plate is used as a surface. In the molded concrete building panel, the thickness of the concrete from the surface is thinner than the peripheral edge of the formed concrete building panel, and the recessed portion framed by the steel frame constituted by the channel steel has a molded concrete building panel. Is formed on the back surface of the steel frame, and the web of the channel steel of the steel frame is directed in the thickness direction of the molded concrete building panel, and one flange sandwiching the web of the channel steel is formed on the back surface of the molded concrete building panel. And the other flange sandwiching the channel steel web is buried in the concrete on the bottom of the recess, and the web is The thickness of the concrete from the other flange to the surface of the molded concrete building panels sandwiching has a first feature that it is less than the thickness of the concrete of the recessed portion.

[0010] A second feature of the molded concrete building panel according to the present invention is that, in addition to the first feature, a through hole is formed in the flange exposed on the back surface of the molded concrete building panel.

[0011]

FIG. 1 shows a formwork of a molded concrete building panel 15 according to the present invention. A space surrounded by an outer formwork 12 installed on a surface plate 11 is made of channel steel. Steel frame 17 is installed. The steel frame 17 is configured such that the channel steel web 20 is oriented in the thickness direction 19 of the molded concrete building panel, and a through hole 24 is formed in a flange 21 on the back side of the molded concrete building panel 15. A metal fitting 26 is attached to the flange 21 by a bolt 25 passed through the through-hole 24, and when the steel frame 17 is installed in a space surrounded by the outer mold frame 12 installed on the surface plate 11. The steel frame 17 is installed so that the metal fitting 26 hits the outer mold frame 12 and is suspended from the metal fitting 26.

The concrete 13 is simultaneously poured into a space at a peripheral portion between the outer mold frame 12 and the steel frame 17 and an inner space surrounded by the steel frame 17.
The concrete 13 is cast to the top end of the outer formwork 12 in the peripheral space, and the molded concrete building panel 15 is cast in the inner space surrounded by the steel frame 17.
Is placed so that the flange 22 on the front side is buried for 1 to 4 cm.

The dimensions (height) of the web 20 of the steel frame 17 and the dimensions (height) of the outer mold frame 12 are constant, and the steel frame 17 is suspended from the outer mold frame 12 via the metal fitting 26, Dimensions (height) of web 20 of steel frame 17
Is smaller than the dimension (height) of the outer formwork 12,
A space having a constant thickness (height) is formed between the first concrete building panel 15 and the flange 22 on the front side of the molded concrete building panel 15, and the concrete 13 is poured into the space.
As described above, the dimensions (height) of the web 20 of the steel frame 17 and the dimensions (height) of the outer mold frame 12 are constant, and the steel frame 17 is suspended from the outer mold frame 12 via the metal fitting 26. , Concrete 13 from the surface plate 11 to the flange 22 on the front side of the molded concrete building panel 15
Becomes constant.

The steel frame 17 includes flanges 21 and 22.
Are protruded into the interior space. For this reason, the flange 22 to be embedded in the concrete 13 can be seen from the inside of the large internal space 27, and the flange 2 can be as deep as the standard.
2 can be embedded, and the right and left flanges 21a and 21b of the steel frame 17 exposed on the back surface can be embedded.
And a molded concrete building panel 15 can be lifted by hooking a rod (not shown).

FIG. 2 illustrates a finished molded concrete building panel 15, the surface of which is in intimate contact with the surface plate 11 used as the surface 14. The thickness of the concrete from its surface 14 is less than the peripheral edge 16 of the molded concrete building panel, and the recess 18 on the back of the molded concrete building panel 15 is bordered by a steel frame 17. The thickness of the concrete from the flange 22 to the surface 14 of the molded concrete building panel is smaller than the thickness of the concrete in the recess 18 and the flange 2 has a thickness corresponding to the difference.
2 is embedded in concrete 13.

The molded concrete building panel 15 can be lifted by hooking a rod material between the left and right flanges 21a and 21b, and by hooking a hanging tool into a through hole 24 formed in the flange 21 on the back side. Can also be lifted. The rods hooked between the left and right flanges 21a and 21b can be temporarily fixed by bolts inserted into the through holes 24. Thus, the molded concrete building panel 15 obtained according to the present invention is safe and convenient for lifting, moving or transporting.

[0017]

According to the present invention (claim 1), the flange 22 is formed on the concrete 1 over the entire periphery of the concave portion 18 on the back surface.
3, the anchoring anchor is not required, the steel frame 17 is firmly integrated with the concrete 13, and the embedding portion (22) does not require the use of a special reinforcing mortar containing a reinforcing agent. Quality control in the manufacturing process of the concrete building panel 15 is facilitated.

According to the present invention (claim 2), the flange 2
Various metal fittings (25.
26) can be attached to the steel frame 17 or the molded concrete building panel 15, so that the steel frame 1
7 can be easily installed in the casting space, and the molded concrete building panel 15 can be easily lifted, moved, and transported.

[Brief description of the drawings]

FIG. 1 is a sectional side view of a production formwork of a molded concrete building panel according to the present invention.

FIG. 2 is a sectional side view of a molded concrete building panel according to the present invention.

FIG. 3 is a cross-sectional side view of a conventional molded concrete building panel and a production formwork.

FIG. 4 is a sectional side view of a conventional molded concrete building panel and a production formwork.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Surface plate 12 Outer frame 13 Concrete 14 Surface 15 Molded concrete building panel 16 Perimeter 17 Steel frame 18 Depression 19 Thickness direction 20 Web 21 Flange 22 Flange 23 Bottom surface 24 Through hole 25 Bolt 26 Metal fitting 27 Space 28 Conventional steel frame 29 Conventional molded concrete building panel 30 Inner frame 31 Recess 32 Fixing anchor 33 Bonding pad

Claims (2)

[Claims] An outer formwork (1) installed on a surface plate (11).
The concrete (13) is cast in a space surrounded by 2), and its surface in close contact with the surface plate (11) is placed on the surface (1).
4) Molded concrete building panels used as
In 5), the thickness of the concrete from its surface (14) is less than the peripheral edge (16) of the molded concrete building panel, and a recess (18) bordered by a steel frame (17) made of channel steel. Formed on the back side of the molded concrete building panel (15), the channel steel web (20) is directed in the thickness direction (19) of the formed concrete building panel, and the channel steel web (20) is removed. One of the sandwiching flanges (21) is exposed on the back surface of the molded concrete building panel (15), and the other flange (22) sandwiching the channel steel web (20) is formed on the bottom surface of the concave portion (18). The other flange (2) buried in the concrete of (23) and sandwiching the web (20)
A molded concrete building panel, characterized in that the thickness of the concrete from 2) to the surface (14) of the molded concrete building panel is smaller than the thickness of the concrete in the recess (18). 2. The molding according to claim 1, wherein a through hole (24) is formed in the flange (21) exposed on the back surface of the molded concrete building panel according to claim 1. Concrete building panels.