JPH045618Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a lightweight cellular concrete slab (hereinafter abbreviated as ALC slab) in which embedded fittings are embedded so that the opening of the nut faces the end face of the lightweight cellular concrete slab.
Regarding the ALC version, it is possible to attach the ALC version to the building frame at the edge face, which is the end face of the ALC version. The purpose of this invention is that the embedded metal fittings
The ALC plate can be installed at the optimal position for attaching it to the building frame, regardless of the position of the cage-like reinforcing bars inside the plate, and the embedded metal fittings have been designed to allow for installation with high positional accuracy. Our aim is to provide an ALC plate with a structure that can further increase the strength of the ALC plate attached to the building frame.

Conventionally, the metal fittings embedded in the ALC plate in order to attach the ALC plate to the building frame on the edge side were installed by welding the nuts 7 along the anchor steel plate 10 in advance, as shown in Fig. 4A and B, for example. The metal fittings 2 are welded to the main reinforcing bars 4a of the reinforcing reinforcing bars structured in the shape of a basket, and this can be buried to form an ALC plate, or the nuts 7 can be pre-welded as shown in Fig. 4C and D. Channel steel 1 welded along the flange piece
1 was directly welded to the main reinforcing bar portion 4a of a reinforcing reinforcing bar constructed in the shape of a basket and then buried to form an ALC plate. All of these have strong structures against external force F as shown by the arrows in the figure.
The structure is such that external force is directly transmitted to the main reinforcing bar portion 4a of the reinforcing reinforcing bar having a cage-like structure.

However, the number and position of reinforcing bars in lightweight aerated concrete slabs are predetermined for each individual panel depending on the load applied to the panel, and the optimal position of the embedded metal fittings relative to the building frame is determined in advance. is set to be irrelevant. If the reinforcing bar positions within the lightweight aerated concrete slab are determined according to the individual optimal installation positions, it will be difficult to install the reinforcing bars. Furthermore, when attaching the panels to the building frame in accordance with the positions of the reinforcing bars, it becomes difficult to attach the panels. Therefore, Fig. 4 A, B,
The conventional methods shown in C and D have the disadvantage that the embedded metal fittings can only be installed at specific positions depending on the position of the reinforcing bars, and cannot be installed at the optimal installation position with respect to the building frame.

In addition, if there is a manufacturing error in the basket-shaped assembly using reinforcing reinforcing bars, the position of the metal fittings for attaching the ALC plate will be affected because the anchor steel plate 10 and channel steel 11 are directly welded to the main bar portion 4a of the cage-shaped reinforcing bars. In cases such as those shown in Fig. 4C and D, the main bar portion 4a of the cage-shaped reinforcing bar and the mounting bracket 2 may directly affect accuracy.
It is also possible that the two parts do not contact well and welding becomes impossible.

In this invention, regardless of the reinforcement position within the ALC plate,
In addition to being able to attach embedded metal fittings to the building frame, it is also possible to increase the strength of attaching the ALC plate to the building frame, and the built-in embedded metal fittings are attached to the cage-shaped reinforcing bars within the ALC plate with high positional accuracy. did
You can get the ALC version.

The configuration of the present invention will be explained based on the embodiments shown in FIGS. 2A and 2B. In these figures, the reinforcing reinforcing bars 4 in the ALC plate are composed of a main reinforcing bar part 4a and a reinforcing bar part 4b welded orthogonally to the main reinforcing bar part 4a. In FIG. 2A, the embedded fitting 3 has two pairs of four short anchor reinforcing bars 5 welded in parallel to each other along the flange portion of the channel steel, which is the embedded steel material 6. A nut 7 is welded to the web portion parallel to the end face of the lightweight cellular concrete plate facing toward the edge of the ALC plate 1, and one end thereof is open toward the edge. A hole is made from the face of the ALC plate 1 toward the opening of the nut 7, so that a bolt 8 can be fitted therein as shown in FIG. The anchor reinforcing bar 5 of this embedded fitting 3 is the third
As shown in the figure, reinforcing bars are arranged at both the upper and lower ends of the ALC plate 1, and are welded and fixed to reinforcing bar portions 4a and 4b having a length that spans almost the entire width of the ALC plate.

In Fig. 2, the embedded steel material 6 is channel steel, but in the present invention, any steel material having at least one pair of parallel flange pieces, such as H-shaped steel material, may be used. Reinforcement bar 4
It is sufficient if it is fixed to . Further, the nut 7 may be fixed perpendicularly to the web portion of the embedded steel material 6 so that the opening of the nut faces the end surface (edge surface) of the ALC plate.

If the nut 7 is fixed in this manner, the external force applied to the nut 7 can be uniformly transmitted to the embedded steel material 6.

In the present invention, such embedded metal fittings 3 are provided at required locations of the ALC plate 1, for example, at the four corners as shown in FIG. 1, so that the ALC plate is constructed.

The effect of this invention is that the embedded steel is not directly welded to the cage-shaped reinforcing bars in the ALC plate, but is welded via short anchor reinforcing bars, so the embedded metal can be positioned accurately and attached to the building frame. This has the effect of allowing it to be placed in the optimal position for installation.

With conventional mounting brackets, the positional accuracy in the in-plane direction of the ALC plate was directly affected by the position of the reinforcing bars and manufacturing errors when making the reinforcing bars into a basket shape.
However, with the embedded metal fitting used in the present invention, the main reinforcing bar 4a and the reinforcing reinforcing bar 4 perpendicular to it are
Not only can it be installed regardless of the position of b, but also the short anchor reinforcing bars of the embedded fitting can be easily deformed, so manufacturing errors when making the reinforcing reinforcing bars into a basket shape can be absorbed by the deformation of the anchor reinforcing bars, and the mounting bracket can be easily deformed. can be installed with good positional accuracy.

In other words, although the anchor reinforcing bars are short, if the length is increased to a certain extent, the bending deformation of the anchor reinforcing bars will be large, and it will be possible to place the reinforcing bars at any position on the ALC plate without being affected by the spacing of the reinforcing bars. However, it is possible to install it.

In this way, the ALC plate of the present invention is an ALC plate that has a mounting portion (ie, a nut portion of a mounting bracket) precisely at a desired position.

Furthermore, when installing the embedded metal fittings of the present invention, since the anchor reinforcing bars are long and reinforcing bars, the anchor reinforcing bars and reinforcing reinforcing bars of the ALC version have good weldability, and the welding method is resistance welding. In addition to being easy to work with, the product also has the advantage of being well welded and having excellent mounting strength.

In addition, when the ALC plate having the embedded metal fittings shown in FIGS. 2A and B is attached to the main body frame 9 by screwing the bolt 8 into the nut 7 as shown in FIG. 3, the bolt 8 The external force acting on the nut 7 is transmitted to the embedded steel 6, and is also transmitted to the reinforcing bars 4b, 4b placed on both the upper and lower surfaces through the short anchor reinforcing bars 5, and further to It is distributed to the main reinforcement portions 4a, 4a and other reinforcing reinforcement portions. Therefore, it is very effective in preventing local breakage from occurring around the insert when external force is applied to the ALC plate.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of the embedded ALC plate of the present invention with cage-shaped reinforcing bars omitted; Figure 2A;
and B are perspective views of the metal fittings embedded in the present invention, Figure 3 is a partial sectional view of the ALC version showing the installation state of the metal fittings, and Figures 4 A and C are two types of conventional metal fittings.
FIGS. 4B and 4D are front views showing the state of attachment to the ALC plate, respectively, and FIGS. 4B and 4D are perspective views showing the state inside the ALC plate of FIGS. 4A and C. 1...ALC version, 2...Mounting bracket, 3...Embedded metal fitting, 4...Reinforcement reinforcing bar, 4a...Main bar part of reinforcing bar, 4b...Reinforcing bar part of reinforcing bar, 5...Anchor reinforcing bar, 6...embedded steel material, 7...nut, 8
... Bolt, 9 ... Body frame, 10 ... Anchor iron plate, 11 ... Channel steel.

Claims (1)

[Scope of utility model registration request] In a lightweight cellular concrete slab in which the embedding fitting is buried so that the opening of the nut faces the end face of the lightweight cellular concrete slab, the embedded steel material 6 that constitutes a part of the embedding fitting is parallel to the end face of the lightweight cellular concrete slab. A pair of parallel flange pieces are present at least on the left and right ends of the web portion, and the nut 7 is fixed perpendicularly to the web portion of the embedded steel material 6, and the nut 7 is fixed perpendicularly to the web portion of each embedded steel material 6. Anchor reinforcing bars 5 are welded to each flange piece in pairs in a vertical direction and parallel to each other, and the embedded fitting is composed of at least an embedded steel member 6, a short anchor reinforcing bar 5, and a nut 7. 3 is embedded and fixed to reinforcing reinforcing bars 4 inside the lightweight cellular concrete slab via each of the anchor reinforcing bars 5.