JPH0458541B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a field edge support or a field edge (in some cases, a frame support or This invention relates to a method for attaching an exterior support material to a lightweight cellular concrete wall, in which a support material (also referred to as a rim) is attached from the outside without welding.

[Conventional technology]

In recent years, buildings using lightweight aerated concrete panels as wall materials have been built in various places, but cracks may appear in these lightweight aerated concrete panels after construction. If cracks or fissures occur in the lightweight aerated concrete panels as described above, rain leaks may occur, and furthermore, the appearance of the building as a whole deteriorates, making it necessary to carry out repair work on the exterior.

Furthermore, even if there are no cracks or crevices in the lightweight aerated concrete panels themselves, in order to change the overall image of the building in line with the times, it is necessary to carry out exterior work on the surface of the lightweight aerated concrete panels after a certain period of time has passed. It was hot.

FIG. 5 shows a conventional method for attaching an exterior supporting material to a lightweight aerated concrete wall. As shown in the figure, a hole 11 of a predetermined size is provided in the lightweight aerated concrete 10, and a hook bolt is inserted into the hole 11. 12
The hook bolt 12 was welded to the angle 12a, which is an inner support member, and the field edge receiver 13 was screwed from the outside, the field edge 14 was attached, and the exterior panel 15 was attached.

In addition, Fig. 6 shows another conventional method for attaching exterior support materials to lightweight aerated concrete walls.
A stepped hole 17 with a step formed on the back side is provided in the lightweight aerated concrete 16, a bolt 18 is inserted into the stepped hole 17, a field edge receiver 19 is screwed to the bolt 18, and the field edge 20 and The exterior panel 21 was held fixed.

[Problem that the invention seeks to solve]

However, in the conventional method of attaching an exterior support material to a lightweight cellular concrete wall shown in FIGS. 5 and 6, since lightweight cellular concrete is relatively soft, heavy exterior panels 15 and 21 are used. There was a problem that I couldn't do it.

Also, even if a relatively light exterior panel is used, the hook bolt 12 or bolt 1 may be removed during use.
There was a problem in that the hole into which 8 was inserted became larger due to earthquakes or other vibrations, and the exterior panels 15 and 21 were peeled off.

In particular, in the method for attaching exterior support materials to lightweight aerated concrete walls shown in Figure 6,
When fixed, the relatively heavy exterior panel 21
However, it is necessary to open a stepped hole 17 from the back side and insert a bolt 18, and an interior panel is usually attached to the back side, There was a problem in that it required a great deal of labor and expense to remove and carry out construction work.

Furthermore, in the method of attaching the exterior supporting material to the lightweight aerated concrete wall in Figures 5 and 6, welding was used to join the metals, so there was a problem that there was a risk of fire, etc. The dot was hot.

The present invention has been developed in view of these circumstances, and allows construction to be carried out from the exterior side of lightweight aerated concrete, and in addition, the exterior supporting materials such as the field edge or field edge supports will loosen due to earthquakes, vibrations, etc. The purpose of this invention is to provide a method for attaching exterior support materials to lightweight aerated concrete walls without any problems.

[Means to solve the problem]

A method for attaching an exterior support material to a lightweight aerated concrete wall according to the first invention in accordance with the above object includes a first step of drilling an oblong hole of a predetermined size at a predetermined position in the lightweight aerated concrete wall; A hook bolt is inserted into the oval hole drilled in the aerated concrete wall, which is inserted into an outer cylinder body that is provided with at least a flange portion that covers the oval hole, and which is longer than the thickness of the lightweight aerated concrete wall. Second
a third step of rotating the hook bolt so that the bent part at the tip of the hook bolt comes into contact with the back surface of the lightweight aerated concrete wall or a supporting member attached to the back surface; Fourth step: Tighten the tightening nut and press the lightweight aerated concrete wall with the bent part of the tip of the hook bolt and the above flange to fix the hook bolt.
and a fifth step of attaching an exterior support material such as a field edge receiver or field edge to the rear end of the hook bolt.

Here, the outer cylinder main body may be composed of a simple flange plate, but it has a flange part disposed on one side that comes into contact with the surface of the wall to which it is to be attached, and a flange part on the flange part. A hook bolt insertion hole is formed eccentrically in the connected interior, and
It is preferable to use an outer cylindrical body in which a notch is formed in a portion of the hook bolt insertion hole that is short in distance from the outside of the other side.

Further, a method for attaching an exterior support material to a lightweight aerated concrete wall according to a second invention in accordance with the above object is as follows:
A first step of drilling an oblong hole of a predetermined size at a predetermined position in a lightweight cellular concrete wall, and a flange portion covering at least the oval hole in the oval hole drilled in the lightweight cellular concrete wall. The second step is to insert a hook bolt that is longer than the thickness of the lightweight aerated concrete wall into the hook bolt insertion hole of the outer cylinder body, which is provided with a third step of bringing it into contact with the back surface of the aerated concrete wall or a support member attached to the back surface;
Tighten the tightening nut attached to the rear end of the hook bolt and press the lightweight aerated concrete wall with the bent part of the tip of the hook bolt and the above flange.
a fourth step of fixing the hook bolt, a fifth step of screwing the support bolt into the female threaded hole formed in the flange of the outer cylinder body to stand it upright, and attaching a field edge receiver or field edge to the support bolt. and a sixth step of attaching exterior supporting materials such as.

〔Example〕

Next, embodiments embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.

Here, FIG. 1 is a side view of a hook bolt used in the method for attaching an exterior support material to a lightweight aerated concrete wall according to the first and second inventions, and a hook bolt outer cylinder member into which the hook bolt is fitted;
The figure is a rear view of the hook bolt outer cylindrical member, FIG. 3 is a perspective view showing the outer cylindrical body attached to a lightweight foamed concrete wall, and FIG. FIG. 3 is a partially omitted side sectional view showing a construction state of the method for attaching the exterior support material.

First, the hook bolt and the hook bolt outer cylindrical member used in the method of attaching an exterior support material to a lightweight aerated concrete wall according to the first and second inventions shown in FIGS. 1 and 2 will be explained in detail.

As shown in FIGS. 1 and 2, the hook bolt outer cylindrical member 25 is made of iron or plastic material (in some cases, only the cylindrical body can be made of a cement product), and has an oval flange portion. 26 and an outer cylinder main body 27 connected to the flange portion 26. The flange portion 26 and the outer cylinder body 27
A rib 28 is provided for reinforcement at the joint with the outer cylinder main body 27, and the cross section of the outer cylinder main body 27 is an oval shape connecting opposing semicircles with a straight part, and an eccentric hook bolt insertion hole is provided inside. 29, and a female threaded hole 31 into which a support bolt 30 is screwed from one end is provided in line with the hook bolt insertion hole 29.

On the exit side of the hook bolt fitting hole 29, a notch 34 into which the bent portion 33 of the hook bolt 32 is fitted is provided at a position closest to the hook bolt fitting hole 29 and the outer wall.

The hook bolt 32 has an overall length longer than the hook bolt outer cylindrical member 25, has a male thread formed at the rear end into which a tightening nut 35 is screwed, and has the other end bent at a right angle to form a bent portion 33.

When the bent portion 33 is rotated and placed at a position opposite to the position where the notch 34 is provided,
The length of the bent portion 33 is determined so that the tip thereof does not protrude beyond the outer periphery of the outer cylinder body 27.

Using this hook bolt outer cylinder member 25,
A method of attaching an exterior support material to a lightweight aerated concrete wall according to an embodiment of the invention will be described.

First, an oblong hole into which the outer cylinder body 27 is inserted is bored at a predetermined position in the lightweight aerated concrete wall 36 (shown in FIGS. 3 and 4) on which exterior work is to be performed. Here, the predetermined position of the lightweight aerated concrete wall 36 refers to a position where exterior support materials such as field fences are attached, without colliding with the reinforcing bars installed in the lightweight aerated concrete (hereinafter referred to as the first step). ).

Next, the hook bolt outer cylindrical member 25 is inserted into the oblong hole 37 bored in the lightweight aerated concrete wall 36 so that the bent portion 33 of the hook bolt 32 does not come out from the outer cylindrical body 27. Here, the total length of the outer cylinder main body 27 of the hook bolt outer cylinder member 25 is longer than the thickness of the lightweight aerated concrete wall 36, and the length from the inside of the flange portion 26 to the notch 34 formed in the outer cylinder main body 27 is as follows. It is assumed that the length is shorter than the length of the lightweight aerated concrete wall 36 (this is the second step).

After this, the hook bolt 32 is rotated approximately 180 degrees, and the bent portion 33 is inserted into the notch 3 of the outer cylinder body 27.
Insert into 4. With this, hook bolt 32
The bent portion 33 can come into contact with the back surface of the lightweight cellular concrete wall 36, but as shown in FIG. It is preferable to determine the position of the oblong hole 37 so as to Note that a packing material 26a is fitted into the rear part of the flange portion 26 to seal out rainwater that enters from the outside.
process).

After this, the tightening nut 35 screwed into the hook bolt 32 is tightened so that the flange portion 26 and the bent portion 33 of the hook bolt 32 press and clamp the lightweight aerated concrete wall 36 and, if necessary, the angle material 38. Make it. In this case as well, fit the packing material 35a (and washer if necessary) and tighten the nut 3.
Turn 5 to prevent rainwater from entering. This completes the attachment of the hook bolt 32 and the hook bolt outer cylinder member 25 to the lightweight aerated concrete wall 36. Here, the hook bolt 32 is fitted into the notch 34 of the outer cylinder main body 27, and the outer cylinder main body 27 is inserted into the lightweight aerated concrete wall 36.
Since it is fitted into an oblong hole formed in the hole, even when the tightening nut 35 is turned, it does not rotate together with the hook bolt 32, so the tightening nut 35 can be easily tightened. Furthermore, since the pressure area of the receiving surface to the lightweight foamed concrete wall increases, even if some load is applied to the hook bolt 32, the lightweight foamed concrete wall will not be cracked (hereinafter, the fourth step).

Next, a field edge receiver 39, which is an example of an exterior support material and has a hole of a predetermined size, is attached to the rear end of the hook bolt 32 while being sandwiched between tightening nuts 40 and 41. This completes the attachment of the field edge receiver 39 to the lightweight aerated concrete wall 36, and the field edge 42, which is also an example of an exterior support material, for fixing the exterior panel is attached to the field edge receiver 39.

Here, the field edge receiver 39 is screwed to the rear end of the hook bolt 32, but for example,
It is also possible to weld (but only if welding is possible) the rear end of 2 (this is the fifth step).

Next, regarding an embodiment of the method for attaching an exterior support material to a lightweight aerated concrete wall according to the second invention, there are differences from the method for attaching an exterior support material to a lightweight aerated concrete wall according to an embodiment of the first invention. I will explain about it.

That is, in the method for attaching an exterior support material to a lightweight cellular concrete wall according to an embodiment of the second invention, the first to fourth steps are the same, but as shown in FIG. A support bolt 30 having a male thread formed on the entire surface is screwed into a female screw hole 31 formed in the hook bolt outer cylinder member 25 by a predetermined length. In this case, if necessary, it is also possible to screw the support bolt 30 into the female screw hole 31 and then tighten the flange portion 26 with a nut to fix the support bolt 30 so that it does not move (see above). , 6th step).

Next, the support bolt 30 is attached to the field edge receiver 43 (the first
(shown in the figure) by tightening the nuts.

Then, a field edge (not shown) is attached to the field edge receiver 43 using screws or a hooking method, and the installation of the exterior support material is completed (this is the sixth step).

In addition, in the above first and second embodiments,
Exterior supports can be installed without welding, thus eliminating fire or other hazards.

In the above embodiment, metal is used for the outer cylinder main body 27, but by using a material with poor heat conduction such as plastic, it is also possible to maintain the heat retention properties of the entire wall.

〔Effect of the invention〕

As is clear from the above explanation, the methods for attaching exterior supporting materials to lightweight cellular concrete walls according to the first and second inventions allow work to be carried out from the outside of the lightweight cellular concrete wall, so that lightweight cellular concrete walls can be attached extremely efficiently. We can do exterior work on concrete walls.

Furthermore, since construction work can be carried out without removing interior materials attached to the inside of the lightweight aerated concrete wall, construction costs can be reduced and the construction period can be shortened.

In addition, an oblong hole is provided in the lightweight cellular concrete wall, and the lightweight cellular concrete wall is sandwiched between the flange part of the hookbolt outer cylinder member and the bent part of the hookbolt, and the hookbolt and the hookbolt outer cylinder member are fixed, so vibrations can be prevented. , they will not loosen due to earthquakes, etc., and it is also possible to attach fairly heavy items to the exterior panel.

[Brief explanation of the drawing]

Fig. 1 is a side view of a hook bolt used in the method of attaching an exterior support material to a lightweight cellular concrete wall according to the first and second inventions and a hook bolt outer cylinder member in which the hook bolt is fitted, and Fig. 2 is a side view of the hook bolt described above. FIG. 3 is a rear view of the outer cylinder member, FIG. 3 is a perspective view showing the above-mentioned outer cylinder main body attached to a lightweight aerated concrete wall, and FIG. 4 is an exterior support material attached to a lightweight aerated concrete wall according to the first invention. A partially omitted side sectional view showing the construction state of the method, and FIGS. 5 and 6 are sectional views showing a conventional method for attaching an exterior support material to a lightweight aerated concrete wall. Explanation of symbols, 25...Hook bolt outer cylinder member,
26...flange portion, 27...outer cylinder body, 29...
...Hook bolt insertion hole, 30...Support bolt, 3
1...Female screw hole, 32...Hook bolt, 33...
...Bending portion, 34...Notch, 35...Tightening nut, 36...Lightweight aerated concrete wall, 37...
Oval hole, 38...Angle material (supporting member), 39
... field edge receiver, (exterior support member), 40... field edge (exterior support member).

Claims (1)

[Scope of Claims] 1. A first step of drilling an oblong hole of a predetermined size at a predetermined position in a lightweight aerated concrete wall; A second step of inserting a hook bolt which is inserted into the outer cylinder body having a flange portion that covers the oblong hole and which is longer than the thickness of the lightweight aerated concrete wall, and rotating the hook bolt,
The third step is to bring the bent part of the tip of the hook bolt into contact with the back surface of the lightweight aerated concrete wall or a support member attached to the back surface, and tighten the tightening nut attached to the rear end of the hook bolt. Consisting of a fourth step of fixing the hook bolt by pressing the lightweight aerated concrete wall with the bent portion and the flange portion, and a fifth step of attaching an exterior support material such as a field edge receiver or field edge to the rear end of the hook bolt. A method for attaching exterior supports to lightweight aerated concrete walls. 2. The outer cylinder main body has a flange portion disposed on one side that comes into contact with the surface of the wall to be installed, and a hook bolt insertion hole formed eccentrically in the interior connected to the flange portion, and furthermore, the hook bolt insertion hole is 2. The method for attaching an exterior supporting material to a lightweight aerated concrete wall according to claim 1, comprising an outer cylinder main body having a notch formed in a portion that is short from the outside of the other side. 3. A first step of drilling an oblong hole of a predetermined size at a predetermined position in a lightweight aerated concrete wall, and a flange portion covering at least the oblong hole in the oval hole drilled in the lightweight aerated concrete wall. It is inserted into the hook bolt insertion hole of the outer cylinder body, which is provided with
Moreover, the second step involves inserting a hook bolt that is longer than the thickness of the lightweight cellular concrete wall, and rotating the hook bolt so that the bent part of the tip of the hook bolt hits the back surface of the lightweight cellular concrete wall or a support member attached to the back surface. a third step of bringing the hook bolt into contact; and a fourth step of fixing the hook bolt by tightening a tightening nut attached to the rear end of the hook bolt and pressing the lightweight aerated concrete wall with the bent portion at the tip of the hook bolt and the flange portion; A fifth step of screwing a support bolt into the female threaded hole formed in the flange portion of the outer cylinder body and standing it upright, and a sixth step of attaching an exterior support material such as a field edge receiver or field edge to the support bolt. A method for attaching an exterior support material to a lightweight aerated concrete wall, comprising the steps of: