JPH0826619B2 - Reinforcement structure for lightweight cellular concrete panels - Google Patents

Description

TECHNICAL FIELD The present invention relates to a reinforcing structure for a lightweight cellular concrete panel, and more particularly to a reinforcing bar for a lightweight cellular concrete panel used as an outer wall of an industrialized house. .

[Background technology]

In an industrialized house where a large amount of materials are collectively produced in a factory and transported to the site to build a house, etc. There is a unit construction method that attaches a panel to the outer wall. In these construction methods, a lightweight cellular concrete panel or the like is used as the outer wall panel. Conventionally, as the lightweight cellular concrete panel, there is one that is separated from each other and has a plurality of angle members sandwiched between and joins mesh lines.
There is a problem that warp occurs in the reinforcing bar after joining the mesh bar to the angle member. For this reason, the applicant of the present invention has proposed that a panel using a flat bar instead of the angle member is
We proposed the lightweight cellular concrete panel 60 shown in the figure (Japanese Patent Application No. 1-72131). This panel 60 has a rectangular shape, and flat bars as lateral main bars near the upper and lower end surfaces.
50B is provided. Between the flat bars 50B, a plurality of flat bars 50A as longitudinal main bars are arranged at predetermined intervals in a direction orthogonal to the flat bars 50B. And these flat bars 50A,
Mesh muscles 51 are fixed to both side surfaces of the panel skeleton formed by 50B.

[Problems to be Solved by the Invention]

However, in the above-mentioned reinforcing structure for lightweight cellular concrete panels, the upper and lower flat bars are used as the horizontal main bars, and due to the bending of the flat bars, etc., twisting occurs throughout the reinforcing bar. easy.

In particular, in a panel having an uneven pattern on the entire surface of the panel, the dimension (cover thickness) between the panel surface and the bar arrangement is insufficient due to the effect of this pattern,
As a countermeasure for this, a method of setting a small gap between the two mesh streaks can be adopted, but this causes a disadvantage that the proof stress against twisting is further weakened.

An object of the present invention is to provide a light-weight cellular concrete panel reinforcing structure capable of reducing the panel thickness while maintaining sufficient strength against twisting.

[Means for solving the problem]

The lightweight cellular concrete panel reinforcing structure according to the present invention is a horizontal main bar arranged substantially parallel to the upper and lower end portions with a predetermined interval, and the horizontal main bar at a predetermined interval between the horizontal main bars. A plurality of longitudinal main bars which are arranged orthogonally and whose both ends are fixed to the lateral main bar, and are arranged on both side surfaces of the plurality of vertical main bars so as to sandwich the plurality of vertical main bars as a whole. And the mesh lines are arranged so that their vertical lines are located inside the horizontal lines, and these horizontal lines are fixed to the vertical main bars, and the horizontal main bars are formed of square steel with a square cross section. A method is adopted in which the longitudinal main bar is formed of a flat bar, and the width dimension of the square steel is made smaller than the width dimension of the flat bar.

[Action]

The longitudinal main bars having the same length are arranged at predetermined intervals so that their end faces are located on the same straight line. Square steel as a horizontal main bar is fixed by welding to both end faces of this vertical main bar,
This forms a framework. Subsequently, the mesh lines are arranged so that the vertical lines of the mesh lines are on the inner side, and the horizontal lines of the mesh lines are fixed by welding to both side faces of the entire longitudinal main bar. Further, the vertical lines of the mesh bars are fixed by welding to both side surfaces of the square steel as the horizontal main bars.

In this way, since square steel was used as the lateral main bar,
Even if the thickness of the concrete panel is reduced, it is possible to prevent the torsional rigidity of the entire reinforcing bar from being lowered. This achieves the above object.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

The reinforcing structure for a lightweight cellular concrete panel according to this example is used as a reinforcing structure for a lightweight cellular concrete panel with a pattern used as the outer wall of the industrialized house described above.

FIG. 1 shows the entire patterned lightweight cellular concrete panel according to the present invention. Further, the cross section is also shown in FIGS. 2 and 3.

In these figures, in the patterned lightweight cellular concrete panel 100, as the concrete panel, the total thickness (80 (mm) in this embodiment) is not changed, and unevenness is formed on one surface (up to 15 (mm) in this embodiment). ), The pattern 40 is formed. In the bar arrangement of the panel 100, a plurality of flat bars 10 as longitudinal main bars extend vertically and are arranged in parallel with each other.
Square steels 20 as lateral main bars are fixed to upper and lower ends of the flat bar 10 at right angles to the flat bar 10, and mesh bars 30 are provided on both side surfaces 10A of the flat bar 10. The mesh muscle 30 is, as shown in FIG.
A steel rod having a predetermined diameter (φ5 [mm] in this embodiment) is assembled in a grid shape and fixed by welding, and its vertical line 30
With the A inside, connect the horizontal line 30B to the side 10 of the flat bar 10.
The structure is fixed to A by welding. Therefore, since the horizontal line 30B of the mesh line 30 is laid out to the outermost side, the concrete panel 100 is cut from the outer surface of the horizontal line 30B.
The "cover thickness" is reached up to the outer surface (Fig. 2, D). Here, the "cover thickness" must be ensured in an amount necessary for protection of the bar arrangement (at least 15 [mm] in this embodiment), so the position of the horizontal line 30B of the mesh bar 30 is determined, and The width of the flat bar 10 is also determined (the width is set to 25 [mm] in this embodiment). Further, the square steel 20 is
The section has a square shape, and the width thereof is determined from the pure interval between the vertical lines 30A of the two mesh streaks 30 positioned as described above (in this embodiment, the width is 15 [mm], so 15 ×). 15
Square steel 20 is used). An attachment nut 41 for attaching the panel 100 to a frame (not shown) is fixed to the flat bar 10 and the square steel 20.

Next, a reinforcing bar arrangement procedure for the lightweight cellular concrete panel reinforcing bar according to the present embodiment will be described.

As shown in FIG. 1, flat bars 10 as main longitudinal bars having the same length are arranged at predetermined intervals so that the upper and lower end surfaces 10B thereof are located on a straight line. The thickness direction of the panel 100 and the width direction of the flat bar 10 are aligned with each other, and at the center of both end surfaces 10B of these flat bars 10,
Square steel 20 is welded one by one as a horizontal main bar to form a skeleton. A nut 41 for attachment is fixed to a predetermined position of the flat bar 10 and the square steel 20 of the frame by welding.

Next, the two mesh lines 30 are arranged on both side surfaces of the flat bar 10 so that the vertical lines 30A thereof are located inside the panel. In this state, the horizontal line 30B of the mesh muscle 30 is fixed to the side surface 10A of the flat bar 10 by welding. On the other hand, since the vertical line 30A of the mesh streak 30 abuts on both side surfaces 20A of the square steel 20,
These vertical lines 30A are fixed to the side surface 20A of the square steel 20 by welding.

The reinforcing bars thus formed are arranged in a mold (not shown), and concrete slurry is poured into the mold to manufacture a patterned lightweight cellular concrete panel.

According to this embodiment, since the square steel 20 is used as the horizontal main bar, the thin lightweight cellular concrete panel can be reinforced without lowering the torsional rigidity.

That is, since the square steel 20 was used instead of the flat bar that was used as the upper and lower lateral main bars in the conventional example, the strain and the like of the member itself is reduced, and as a result, the bar arrangement that is closer to a flat surface is arranged. Is possible.

Moreover, since the square steel 20 is used only as the horizontal main bar and the vertical main bar is formed from the flat bar 10, since the costly high square steel 20 is used at the minimum necessary amount, the cost increase can be suppressed to the minimum. .

〔The invention's effect〕

As described above, according to the reinforcing structure for a lightweight cellular concrete panel according to the present invention, the torsional rigidity is not reduced in spite of the substantial reduction in the panel thickness due to the pattern provided on the panel surface. It is possible to effectively prevent twisting of the bar arrangement.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional plan view showing the whole embodiment of the present invention, FIG. 2 is a cross-sectional view showing a II cross section in FIG. 1, and FIG. 3 is a II-II cross section in FIG. FIG. 4 is a perspective view showing the state of the reinforcing bar, and FIG. 5 is a plan view showing the reinforcing bar of the concrete panel which is the premise of the present invention. 10 …… Flat bar as vertical main bar, 20 …… Square steel as horizontal main bar, 30 …… Mesh bar, 30A …… Vertical line of mesh bar, 30B …… Horizontal line of mesh bar.

Claims (1)

[Claims] 1. A horizontal main bar which is arranged substantially parallel to the upper and lower ends at a predetermined interval, and a horizontal main bar which is arranged at a predetermined interval between the horizontal main bars and is orthogonal to the horizontal main bar. A plurality of longitudinal main bars whose both ends are fixed to a lateral main bar, and mesh bars arranged on both side surfaces of the plurality of vertical main bars so as to sandwich the plurality of vertical main bars as a whole, and the mesh The muscle is arranged so that its vertical line is located inside the horizontal line, and the horizontal line is fixed to the vertical main bar, the horizontal main bar is formed of square steel having a square cross section, and the vertical main bar is formed. A reinforcing structure for a lightweight cellular concrete panel, which is formed from a flat bar and has a width dimension of the square steel smaller than a width dimension of the flat bar.