JP2999980B2 - Composite panel for exterior wall used for steel frame building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel for an outer wall used for a steel-framed building, and more particularly to an extruded cement board or an aerated lightweight concrete board (ALC panel), which is simply referred to as a cement board in the present specification. It is intended to provide a panel for an outer wall in which an outer heat insulating structure can be advantageously achieved in a middle-rise steel-framed building in which is used as an outer wall material.

[0002]

2. Description of the Related Art Heretofore, a cement board as an outer wall material for a steel-frame building has conventionally been formed by moving an extruded body on a roller and curing it in an autoclave chamber. Since the product failure rate increases due to the occurrence of warpage during curing, the width is 450 to 1,000 mm from the viewpoint of transporting and handling the product.
The main product with a prize of 00mm width.

A conventional cement plate for an outer wall is shown in FIG.
As shown in (1), a Z-clip 21 for attachment to the beam B is temporarily fixed on the upper and lower portions of each cement plate in advance. Z
The clip 21 has a bolt hole drilled at a predetermined position on the cavity h of the cement plate, and is attached to the square nut inserted into the cavity by bolting from the surface of the cement plate.

Therefore, when a conventional cement board is attached as an outer wall material, the Z-clips 21 of each cement board carried on the concrete floor of each floor are temporarily fastened one by one, and the lower clips of the cement board 1 are lifted. 21
Is fixed to the through-angle 20 of the steel material welded and fixed to the beam B by the mounting piece 19 (FIG. 6D), and the upper clip 21 is lowered to the through-angle 20 of the steel material welded and fixed to the lower surface of the beam B. After fitting (FIG. 6B) and aligning the position of the cement plate 1, the Z-clip 21 is fully tightened, and the cement plates 1 having a width of about 600 mm are sequentially built one by one to form an outer wall. (FIG. 7).

[0005] After the steel-framed outer wall is formed, the exposed portion of the iron material of the pillar P or the beam is sprayed with rock wool 15 as a fire-resistant layer and fire-resistant coated. A heat insulating layer 16 of a hard urethane foam having a thickness of about 30 mm is formed by spraying on site, and then a lightweight steel-framed interior material base S is attached to necessary places, and an interior material 17 is stretched on each base.

[0006]

The assembling of the outer wall is a work of sequentially attaching the cement plates 1 supplied one by one from the factory one by one, so that the number of working days in the building construction work is high and labor is required. It was a complicated operation. In addition, since the hard urethane foam layer 16 is formed by spraying the inner surface of the stretched cement board 1 on the outer wall, the thickness of the heat insulating layer 16 cannot be made uniform, and the operation itself requires skill. Cost me.

[0007] Further, when the base material for the interior material is attached, the heat insulating layer is likely to be missing, and the attachment of the base material increases the wall thickness D1. In addition, in the portion E (FIG. 8) of the cement plate that is covered by the pillar (FIG. 8) (the portion between the pillar and the cement plate), neither the rock wool nor the hard urethane foam can be sprayed on the pillar. Then, a cold bridge effect (a heat conduction effect of the cold air temperature of the outside air) from the cement plate 1 to the column P occurs, leading to rust corrosion due to dew condensation on the column P, and an unexpected destruction of the building due to embrittlement of the steel frame portion. Will be invited.

At the joint between the rock wool spraying section and the hard urethane foam spraying section, the crack C (causing a volume shrinkage of about 3%) during the solidification of the sprayed urethane and the adhesive force of the urethane. 8) occurs, and the cracks cause a cold bridge effect, which causes dew condensation. An object of the present invention is to provide an outer wall material capable of solving or improving each of the problems as described above.

[0009]

A mold T having at least an upper and lower frame made of a steel material is placed on the inner surface of an outer layer in which a plurality of cement plates 1 are juxtaposed, and an interior plate 7 is further placed on the mold T. Is placed, the cavity K formed by the form body T is filled with the hard urethane foam 6, and the cement board 1, the form body T and the interior board are integrally bonded and bonded by the hard urethane foam. This is a composite panel for the outer wall.

The composite panel W has a plurality of cement boards juxtaposed.
Is in the form of integrated fixed, panel W is a conventional cement
Since the width is much wider than the panel width (1,000 mm or less ), the work of forming (building) the outer wall can be performed efficiently. Further, the panel W is manufactured and bonded at the same time as the rigid urethane foam layer is filled and formed at the factory .
Hard urethane foam layer and interior material as heat insulator
Panel mounting process is not required, and the production of panel W is labor-saving.
Can be rationalized. In addition, since the rigid urethane foam layer has a uniform thickness in factory production, the heat insulation function in the construction building is uniform on all wall surfaces, and the spraying work of the conventional rigid urethane foam is not necessary, and the construction work is labor-saving. In addition, since the heat insulating layer also exists in the portion facing the outside (back side) of the pillar P, the cold bridge effect from the cement plate 1 on the pillar P can be prevented.

In addition, since it is no longer necessary to attach the base for the interior board except for around the pillars (the panel W has the interior board), the work of attaching the base material and stretching the interior board is unnecessary. Thus, the construction work can be saved, and the wall thickness D becomes thinner than before, so that the effective space in the building room increases.
Further, as a means for imparting a heat insulating layer to the cement plate, there is no need to connect to the fire resistant rock wool spraying of the exposed iron material and spray urethane (FIG. 8). The possibility of generation of cracks C (FIG. 8) and dew condensation at the connection portion has been eliminated.

Further, since the composite panel W has reinforcing members 10 and 11 stretched in a mold having upper, lower, left and right frames, deformation of the panel due to urethane foaming pressure at the time of manufacturing the panel at a factory can be prevented. And the angle steel forming the formwork T
The material makes thermal contact from the cement board 1 on the outer wall to the interior board 17
To keep to the minimum necessary (thickness contact of angle steel)
Next, a cold bridge from the cement board 1 to the interior board 17 (heat bridge)
The effect can be minimized. Further, since one side of the lower frame of the panel W supports the cement plate, the cement plate 1 does not fall off from the form body T even when subjected to a shaking action such as an earthquake.

Further, since each frame material on the four sides of the composite panel W is an angle steel material, it functions as a strong reinforcing material. Therefore, a separate reinforcing member is provided on the composite panel portion forming an opening such as a window or a doorway of a room. There is no need to add materials. Panel W
The edges of the standing sides of the two side frames support the interior board 17 via the buffer body 14 made of synthetic resin material or wood of the poorly-heated conductor (FIG. 2 (A)). The effect of the cold bridge on the interior board through the cushioning member 14 is prevented.

Further, since the nut is welded and fixed to the inside of the upper and lower sides of the formwork of the panel W via screw holes, the panel W can be easily mounted on the beam by using mounting hardware or the like. You. In addition, since each cement plate is attached to the formwork by the Z-clip, it is easy to adjust the position of each cement plate and to attach it. Instead of the Z-clip, the upper frame 2 and the lower frame 4 may be provided with long holes in the horizontal direction inward.

Further, since the upper frame 2 of the form body T is lower than the upper end of the cement plate, the fastening of the panel W to the beam B via the bolt hole 8 by the metal fitting is performed by the lower end of the cement plate of the upper panel. It can be performed without any special mounting space between the upper panel and the upper end of the cement plate of the lower panel, and there is no undesired extra gap between the upper and lower panels. Further, since the end portions of the cement board 1 is provided with a bent edge of the outer side frame 3, at the corner portion of the outer wall, all outer walls cement board 1
And a complete fire wall.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An upper Z-clip 21 and a lower Z-clip 21 are temporarily fixed (FIGS. 6 (A) and 6 (C)) on a conventional extruded cement plate 1 having a width of 600 mm and a length of 2800 mm, and the Z-clips 21 are placed on the upper surface. And three cement boards 1 were juxtaposed.

Next, an equilateral angle iron (75 mm (side width) × 7
Upper frame 2 of 5 mm (side width) x 6 mm (thickness) and both side frames 3, 3 of 65 x 65 x 6 equilateral angle steel
And a lower frame 4 made of a 50 mm × 50 mm × 6 mm equilateral angle iron
The upper frame 2 and both side frames 3 and 3 have a welding frame in the form of an inward horizontal side and an upward vertical side, and the lower frame 4 has an inward horizontal side and a downward vertical side. And 65mm x 65
One side of the equilateral angle iron slab 19 mm × 6 mm and 10 cm in length is welded to the horizontal side of the lower frame 4, and the other piece is welded to a 69 × 3 steel plate (FIG. 3 (B)) to form each of the frames 2, 3. , 3, 4 horizontal sides are formwork T
Each steel material was fixed by welding so that a vertical edge of each frame above and a steel plate became the outer peripheral wall of the form body T.

The upper frame 2, the steel plate 5 and the equilateral angle iron 19
, A nut 9 communicating with the bolt hole is welded and fixed to the inner surface side, and as a vertical reinforcing member of the form body T, a central portion of each horizontal side of the upper frame 2 and the lower frame 4 is formed. Dimension between 5
A flat bar of 0 mm × 3 mm is welded and stretched, a round bar 11 having a diameter of 9 mm is welded and stretched between both frames, and a urethane injection hole O is drilled in the steel plate 5 to form a mold body. And

Next, the mold body T is placed on a cement plate (FIG. 3A), and the hanging side of the lower frame 4 contacts the lower end surface of the cement plate 1 so that the upper end of the cement plate 1 is L (3
0 mm), three cement plates are fixed to the form body T by fitting each Z clip 21 to the horizontal sides of the upper and lower frames 2 and 4 and finally tightening the Z clips 21. A PVC buffer 14 (FIG. 2 (A)) was fitted over the entire length.

Then, the cement plate-assembled formwork is placed on a press table 30, and an interior plate 7 made of a 12.5 mm-thick gypsum board is placed on four sides of the formwork T standing upright. Then, the pressed body 31 was lowered along the guide columns 32 and held on the interior board 7, and a rigid urethane foam was injected and foamed from the urethane injection hole O.

When the product was taken out after the foaming was completed, the foaming pressure of the rigid urethane foam at the time of molding was strong.
Each reinforcing material of the flat steel 10 and the round steel 11 in the mold body prevents the swelling distortion of the steel material on the four circumferences of the mold body, and there is no swelling distortion of the interior plate 7 due to the pressing and holding action of the press body. A uniform composite panel was obtained.

Moreover, the obtained composite panel W is composed of a cement plate 1, steel members of a form body, a buffer member 14 covered with side frames 3, 3, and an interior plate 7 of a gypsum board. The rigid urethane foam and the urethane foam were firmly integrated by the adhesive force.

[Use of Panel] When the panel obtained in the embodiment was used as an outer wall material of a steel frame building, the panel W
Because it has several times the width of the conventional cement board itself,
The number of days required to build the outer wall was reduced to less than half that of the past.
Furthermore, since the panel W is provided with both a heat insulating layer and an interior panel, simply installing the steel-framed outer wall with the panel W requires simultaneous installation of the heat insulating layer of the external wall material and the interior panel. Neither the on-site spraying work nor the installation of the base material and the installation of the interior board can be omitted, greatly reducing the number of construction days.

Further, just by installing the panel W, the whole building becomes an external heat insulation form by a uniform heat insulation layer, and the part in contact with the panel of the column or the beam where the heat insulation layer could not be sprayed by the conventional construction method. Due to the presence of the layers, the cold bridge effect from the building outer wall could be completely prevented, and the service life of the steel-framed building could be improved. Further, as compared with a conventional case where an interior board is stretched via a base material for interior, the inner wall of the panel is an interior board, so that the thickness of an outer wall is reduced and an effective space of a building is increased.

It is reasonable that the outer wall is formed by lifting the large-sized composite panel W from the ground, and it is not necessary to use the concrete floor of each floor to construct the outer wall of each floor. The placing of the floor concrete can be performed after the outer wall is formed, the placing of the concrete floor can be performed regardless of the weather, and the curing of the concrete floor becomes easy.

[Modification] Since the upper and lower portions of the panel W need only be attached to the beams, the frame of the composite panel W may be composed of only the upper frame and the lower frame of the angle steel material. In this case, at the time of forming the panel, separate molds may be brought into contact on both sides, which reduces the weight of the panel W and the cost of the frame material to be used, and since there is no steel material on the side edges of the panel,
This is also advantageous from the viewpoint of preventing a cold bridge at the side edge of the panel W.

[0027]

The composite panel W has a plurality of cement boards arranged side by side.
It is a form that is fixed integrally with the conventional cement panel.
Since the width is much wider , the amount of work required to build the outer wall is reduced, and the working time can be reduced. Furthermore, panel W
At the same time as rigid urethane foam layer filling and molding in factory production
In order to adhesively bond each component to the
Eliminates the need for individual mounting of urethane foam layers and interior materials
As a result, the production of panel W can be saved, and a homogeneous product is reasonable.
Can be manufactured In addition, rigid urethane foam layer
Due to the uniform thickness of the production, the insulation function is completely
It becomes uniform on the wall. In addition, if the composite panel of the present invention is used as an outer wall material, the conventional work of spraying hard urethane foam on a cement board at the site, the work of attaching the base material for the interior material and the work of stretching the interior material are unnecessary, Therefore, the construction period can be significantly shortened.

When the composite panel of the present invention is used to form an outer wall of a steel-framed building, a portion facing the outside (back surface) of the column P can be formed.
Since the heat insulation layer also exists and the entire outer wall surface is uniformly insulated, the cold bridge action from the outer wall cement plate can be prevented, and rust corrosion due to dew condensation caused by iron bridges such as pillars and beams inside the building Also, the embrittlement of the steel material can be prevented, and unexpected collapse due to the partial embrittlement of the steel-framed building is eliminated, thereby improving the safety and the service life of the steel-framed building.

[Brief description of the drawings]

FIG. 1 is a view of the composite panel of the present invention, wherein (A) is a perspective view, (B) is a horizontal sectional view, and (C) is a vertical sectional view.

FIG. 2 is a partially enlarged view of the composite panel of the present invention,
(A) is a part A of FIG. 1 (B), and (B) is a part B of FIG. 1 (C).
FIG. 2C is a diagram showing a portion C of FIG. 1C.

3A and 3B are perspective views showing the internal structure of the composite panel of the present invention, wherein FIG. 3A shows a related structure between a cement plate and a form body, and FIG. 3B shows a related structure between a lower frame 4 and a steel plate 5; FIG.

FIG. 4 is a partial perspective view showing a use state of the composite panel of the present invention.

FIG. 5 is a perspective view showing a manufacturing process of the composite panel of the present invention.

FIG. 6 is a perspective view of a conventional cement board, and (A)
(B) shows the state of attachment to the beam above the cement board, (C) shows the state of attachment of the lower Z clip, and (D) shows the state of attachment to the beam below the cement board. FIG.

FIG. 7 is a perspective view showing a conventional state in which a cement board is attached to a beam.

FIG. 8 is a partial perspective view showing a state of use of a conventional cement board.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cement board 2 ... Upper frame 3 ... Side frame 4 ... Lower frame 5 ... Steel plate 6 ... Hard urethane foam 7 ... Interior plate 8 ... Bolt hole 9 ... Nut 10 ... Flat steel 11 ... Round steel 15 ... Rock wool 17 ... Makeup Plate 21: Z-clip h: Cavity O: Injection hole P: Column S: Stud T: Form body W: Composite panel

Continuation of the front page (72) Inventor Kazuhisa Morimoto 14-2-1, Kita48-Jo Higashi-ku, Higashi-ku, Sapporo-shi, Hokkaido Inside Matsumoto Construction Co., Ltd. (56) References JP-A-6-158779 (JP, A) JP-A-Hei 8-277601 (JP, A) JP-A-9-60142 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04C 2/26-2/52

Claims (8)

(57) [Claims] 1. A mold body (T) having at least an upper and lower frame made of steel is placed on the inner surface of an outer layer in which a plurality of cement boards (1) are juxtaposed, and an interior board is further placed on the mold body (T). (7) is placed, the cavity (K) formed by the form body (T) is filled with the hard urethane foam (6), and the cement board (1), the form body (T), and the interior material (7) A composite panel for an outer wall integrally bonded with a rigid urethane foam (6). 2. The mold body (T) includes upper, lower, left and right frames made of an angle steel material, and reinforcing members (10, 1) are provided between the upper and lower frames and between the left and right frames.
The composite panel for an outer wall according to claim 1, wherein 1) is stretched. 3. An upper frame (2) and two side frames (3, 3) having one side of the angle steel material horizontally inward and the other side vertically upward, and one side of the angle steel material. 3. A structure in which a lower frame (4) having a horizontal inward direction and the other side having a vertical downward facing lower end supporting side of a cement plate, and a vertically upward steel plate (5) further fixed to the lower frame (4). Composite panel for exterior walls. 4. An upright side of both side frames (3, 3) and an interior plate (1).
The composite panel for an outer wall according to claim 2 or 3, wherein a buffer member (14) of a poorly-heated conductor is interposed over the entire length between the panel and (7). 5. A nut (9) communicating with a bolt hole (8) is fixed by welding to the inner surface of a steel plate (5) attached to the upper frame (2) and the lower frame. The composite panel for an outer wall according to any one of the above. 6. The outer wall according to claim 1, wherein the upper and lower ends of each cement board are locked to horizontal sides of the upper and lower frames by Z clips. Composite panel. 7. The composite panel for an outer wall according to claim 1, wherein an upper end of the cement board (1) slightly protrudes from an upper surface of the upper frame (2). 8. The composite panel for exterior walls according to claim 1, wherein one side end of the cement board (1) has an inwardly bent edge.