JPH0579181A - Lightweight cellular concrete panel with building frame attachment device and manufacturing method thereof - Google Patents

Abstract

(57) [Summary] [Purpose] A lightweight structure with a building structure mounting device that allows mounting on a building frame even with a large panel and does not require searching for female screw holes of bolts embedded in the panel for mounting. Make it easy to provide aerated concrete panels. [Structure] A screw portion 2c of a bolt 2 having a female screw hole 2b formed on the top surface is screwed into a mounting member 1 so that the top surface of the bolt 2 protrudes outward from a reinforcing rod mat 3 to form a plurality of members. Welding the mounting metal fitting 1 to the reinforcing bar mat 3 and adjusting the screwing of the bolt 2 and the mounting metal fitting 1 to bring the top surface of the bolt 2 into contact with the bottom surface 4a of the mold 4 so that the reinforcing bar mat 3 is inside the mold. Then, the lightweight aerated concrete slurry was poured into the mold 4 for molding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight cellular concrete panel with a building frame mounting device, which includes a mounting device for mounting a lightweight cellular concrete panel forming an outer wall surface of a building to a building frame of a building, and The present invention relates to a manufacturing method for manufacturing a lightweight cellular concrete panel with a building frame attaching device.

[0002]

2. Description of the Related Art Conventionally, when a lightweight cellular concrete (hereinafter simply referred to as ALC) panel cured by steam is used as an outer wall of a building, a hole penetrating in the thickness direction of the ALC panel is bored at a construction site. It was installed and bolted to building members such as a building frame through a mounting jig.

This method is troublesome at a construction site,
There is a problem that the construction period is prolonged, manpower is required, and water is easily infiltrated from the repaired portion of the through hole, and rust or corrosion occurs in the building member.

In order to solve such a problem, the AL
At the stage of manufacturing a C panel, an ALC panel in which a mounting jig is embedded in advance has been used.

As a method of embedding a mounting jig in the ALC panel, a mounting jig is formed by punching holes at predetermined positions on the front and back surfaces of the ALC panel molded to be a product after the molding is completed. There is a method of embedding a nut so that a bolt hole screwed into the nut is not embedded.

Further, a reinforcing bar mat having a base of a nut, which is a mounting jig, locked therein is provided in the female screw hole of the nut.
It is set in a mold so that C does not enter, then a raw material slurry that is a material of ALC is injected into the mold, and when it is in a semi-cured state, it is molded into a predetermined size and then autoclaved. There is also a method of putting it in a pot and curing it with high temperature and high pressure steam.

[0007]

The former method has versatility because it has the advantages of good positional accuracy of the nut, which is a mounting jig, and no scratches left on the surface. However, it has drawbacks such as troublesome work and the nut as a mounting jig cannot be fixed to the reinforcing bar mat, and the mounting strength is weak, so it can be applied to a large ALC panel that requires strong mounting strength. There wasn't.

The latter method is a method for preventing the raw material slurry from entering the female screw of the nut, which is a jig, by attaching a tape to the opening of the female screw hole of the nut,
For example, a Styrofoam plug was inserted into the female screw hole.

As mentioned above, when the tape is attached,
Since it is difficult to determine the position of the nuts in the panel, when installing the panel, make a reference of the nut positions,
Since a large hole must be bored and bolted, there is a drawback that it requires troublesome work on site such as repairing the bored hole.

In the case of using a Styrofoam plug, the Styrofoam is melted during steam curing in an autoclave and holes for bolts are formed. Stuck inside,
There is a drawback that the removal work is troublesome.

The present invention solves the above-mentioned problems in the conventional ALC panel, has a strength capable of supporting even a large ALC panel, and the female screw hole on the top surface of the bolt to be attached to the building frame which is a building member is exposed. Therefore, it is an object of the present invention to provide an ALC panel which does not need to be drilled in order to find the position of a nut and does not need to remove the molten residue of the plug of the female screw hole of the nut, and a method for manufacturing this ALC panel To do.

[0012]

SUMMARY OF THE INVENTION The present invention relates to a means for a lightweight cellular concrete panel with a building frame attachment device for achieving the above-mentioned object, wherein a screw portion of a bolt having a screw hole on the top surface is screwed. The above-mentioned mounting bracket is fixed to the reinforcing bar mat so that the top surface of the bolt protrudes outward from the reinforcing bar mat, and the top surface of the bolt is exposed to the outer surface to attach the reinforcing bar mat and the mounting bracket to the lightweight cellular concrete panel. It is characterized by being buried inside.

Further, the present invention relates to a method for manufacturing the lightweight cellular concrete panel with the building frame mounting device, wherein a screw portion of a bolt having a screw hole on the top surface is screwed into a mounting metal fitting, A plurality of these mounting brackets are fixed to the reinforcing bar mat, the reinforcing bar mat is placed in the form with the top surfaces of the bolts facing down, and the top surfaces of the bolts of the plurality of mounting brackets are projected from the reinforcing bar mat. After adjusting the screwing of the bolt and the mounting bracket so that the top surface of the protruding bolt and the bottom surface of the form contact each other, pour the lightweight cellular concrete material into the panel frame to reduce the weight. It is characterized by being formed into aerated concrete.

[0014]

In the lightweight cellular concrete panel with a building frame mounting device of the present invention, the mounting bracket is fixed to the reinforcing bar mat built into the ALC panel, and the reinforcing bar mat and the mounting bracket are integrated, so that the mounting bracket is screwed. When the ALC panel is attached to the building frame with the matching bolts,
The support strength of the reinforcing bar mat by the mounting bracket is increased, and it becomes possible to mount a large ALC panel to the building frame.

Further, since the top surface of the bolt contacts the bottom surface of the mold when pouring the ALC material into the mold, the bolt of the ALC panel is removed when the panel is removed from the mold. Since the top surface of the bolt is exposed, it is not necessary to search its position, and even if the screw hole on the top surface of the bolt is closed with tape, the tape can be easily peeled off.

Further, since the top surface of the bolt is adjustable with respect to the reinforcing bar mat, the top surface of the bolt can always contact the bottom surface of the form.

[0017]

EXAMPLES Next, the manufacturing method of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a screw hole 1a is formed in a central horizontal surface of a U-shaped fitting 1 formed by cutting a U-shaped steel having a thickness of 3 to 10 mm.

In this screw hole 1a, a male screw portion 2 of a bolt 2 in which a female screw hole 2b is screwed on the top surface of a hexagonal head portion 2a.
c is screwed together, and the position of the top surface with respect to the fitting 1 can be adjusted up and down by turning the head 2a.

With such a structure, the mounting member 1 supports the bolt 2 by screwing. To secure the strength to support the bolt 2, the plate thickness of the mounting bracket 1 is 3 m.
m or more is required, and it is desirable that there are two or more threads in the plate thickness. If the plate thickness exceeds 10 mm, the supporting strength is unnecessarily increased only by increasing the weight.

The mounting metal fittings are provided at four or more predetermined positions, such as symmetrical positions in the front, rear, left and right, toward one surface of a basket-shaped rebar mat 3 composed of main bars 3a, supplementary bars 3b and spacers 3c. The left and right leg portions 1b of 1 are fixed by means such as welding.

The length of the bolt 2 is determined according to the height from the fitting 1 to the building mounting surface of the ALC panel. In addition, the mounting position on the rebar mat 3 is ALC.
It is determined by the installation specifications of the panel to the building frame.

Reinforcing bar mat 3 assembled in this way
Is set in a rectangular mold 4 as shown in FIG. 2 with the top surface of the bolt 2 facing downward, and a slurry which is a material of ALC is poured into the mold 4.

As described above, before the slurry is poured, the metal fittings 3 set in the mold 4 are attached so that the top surface of each bolt 2 contacts the bottom surface 4a of the mold 4. Adjusted by rotation of bolt 2 relative to 1. After that, the rotation of the screw is fixed by spot welding.

By adjusting the bolts 2 with respect to the rebar mat 3, the top surfaces of all the bolts 2 are changed to the bottom surface 4 of the formwork 4.
The slurry can be prevented from invading the female screw hole 2b by contacting with a and the reinforcing bar mat 3 can be supported horizontally.

However, when pouring the slurry, the ALC
By the foaming of the slurry which is the material, the top surface of the bolt 2 is lifted from the bottom surface 4a of the mold 4 and a gap is created between the bottom surface 4a of the mold 4 and the slurry enters the female screw hole 2b through this gap. Alternatively, an ALC film may be formed on the top surface of the bolt 2 and the top surface of the bolt 2 may be buried in the ALC panel.
Therefore, it is desirable to previously cover with a tape or the like so that the ALC material does not flow from the opening of the female screw hole 2b of the bolt 2. Further, since the gap is automatically closed when the tape slightly floats, it is desirable that the tape that covers the female screw hole 2b be elastic.

If more lift is expected, an elastic body such as rubber is sandwiched between the tape on the top surface of the bolt 2 and the bottom surface 4a of the form 4, and the above lift occurs. Even if it occurs, the elastic body absorbs the gap formed between the elastic body and the upper surface of the mold to close it.

As the slurry poured into the mold, a slurry obtained by mixing a siliceous raw material and a calcareous raw material by an ordinary method and mixed with an additive such as aluminum powder is used. Let it foam in the frame.

When a semi-cured state is reached after a suitable time, the mold 4 is taken out, and the upper surface is cut off horizontally, the side surfaces are cut off vertically, and the like. Finish to dimensions.

After that, it was inserted into an autoclave and heated at high temperature.
It is completed by steam curing at high pressure, but bolt 2
The tape attached to the top surface of the can be removed before shipping or at the site.

In the lightweight cellular concrete panel with a building frame mounting device manufactured in this manner, since the mounting bracket 1 is integrated with the reinforcing bar mat 3, the mounting strength of the reinforcing bar mat 3 when mounted on the building frame is Becomes large,
Even a large ALC panel can be firmly attached.

Also, the bolt 2 used for this attachment
The female screw hole 2b on the top surface of the
Since it is exposed on the back surface of the panel, there is no need to search for it or take out the molten residue in the female screw.

[0033]

As described above, the lightweight cellular concrete panel with a building frame mounting device of the present invention has the reinforcing bar mat and the mounting bracket integrated with each other, and the mounting bracket has a screw hole for mounting on the building frame. Since the installed bolts are screwed together, the mounting strength of the ALC panel is increased, and even a large-sized ALC panel can be mounted without insufficient mounting strength.

Since the screw hole on the top surface of the bolt used for mounting is also exposed on the ALC panel surface, its position can be easily known, and the troublesome work of searching for the position on site. Don't need

Further, the manufacturing method of the present invention has a feature that a lightweight cellular concrete panel with a building frame attaching device having such advantages can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a fitting and a bolt are screwed together.

FIG. 2 is a cross-sectional view showing the manufacturing process of the present invention.

[Explanation of symbols]

 1 Mounting bracket 2 Bolt 2b Female screw hole 3 Reinforcing bar mat 4 Formwork

Claims (2)

[Claims] 1. A mounting metal fitting, into which a threaded portion of a bolt having a screw hole formed in the top surface is screwed, is fixed to the rebar mat so that the top surface of the bolt projects outward from the rebar mat. Exposing the top surface of the bolt to the outer surface, a reinforcing bar mat,
A lightweight cellular concrete panel with a building frame mounting device, characterized in that the mounting hardware is embedded in the lightweight cellular concrete panel. 2. A plurality of mounting brackets are formed by screwing a threaded portion of a bolt having a screw hole on the top surface into the mounting bracket.
Fix it to the reinforcing bar mat, set the reinforcing bar mat so that the top surface of the bolt is the bottom surface, and project the top surfaces of the bolts of the plurality of mounting brackets from the reinforcing bar mat in the formwork. Form the lightweight cellular concrete by pouring the material of the lightweight cellular concrete into the panel frame after adjusting the screwing of the bolt and the fitting so that the top surface of the bolt and the bottom surface of the mold contact each other. And a method for manufacturing a lightweight cellular concrete panel with a building frame attaching device.