JP7162509B2 - wall structure - Google Patents

Description

The present invention relates to wall construction.

BACKGROUND ART A wall structure in which a single or multiple layers of heat insulating material is interposed between an exterior material such as a ceramic or metal siding board and an interior material such as a gypsum board is applied to a building. More specifically, a wall structure having one or two layers of heat insulating material on the exterior material side, and an interior material disposed on the indoor side of the heat insulating material layer via a ventilation layer or an air heat insulating layer. be. In the case of houses that require high insulation to save energy for air conditioning, a wall structure with two or three layers of insulation material is applied. Wall structures with a single layer of insulation may be applied in houses in moderate areas.

For example, a heat insulating material layer composed of moisture permeable heat insulating material and non-moisture permeable heat insulating material is disposed on the indoor side of the exterior material, and the interior material is fixed to a plurality of studs via the ventilation layer. There has been proposed a wall structure in which there is a wall (see, for example, Patent Literature 1).

JP 2015-68034 A

Like the wall structure described in Patent Literature 1, a wall structure in which the interior material is fixed to a pillar or stud with screws or the like while the interior surface of the interior material is flat is generally used. In such a wall structure, a sheet of flat interior material is arranged so as to straddle the pillar, and this interior material is fixed to the pillar and a plurality of studs on the left and right sides of the pillar by screws or the like. be done.

For this general wall structure, even if the size (cross-sectional dimension) of the pillar increases, there is a demand to expand the indoor space as much as possible while fixing the position of the pillar. There is a wall structure that has a pillar shape that partially protrudes into the room.

In such a wall structure having a pillar shape on the indoor side, a part of the pillar protrudes into the room, which may cause problems in terms of construction and fire resistance.

The problem with construction is that since a part of the pillar protrudes into the room, a piece of flat interior material is placed across the pillar like the general wall structure described above, It is difficult to obtain good workability because it cannot be screwed to the pillar and a plurality of studs on the left and right sides of the pillar.

On the other hand, the fire resistance issue is that compared to the above-mentioned general wall structure in which the pillars do not protrude indoors, part of the pillars protrude indoors, so the pillars are exposed to fires of, for example, about 1000 ° C. It is susceptible to the hot wind of time.

The present invention has been made in view of the above-mentioned problems, and provides a wall structure in which a part of the pillar protrudes into the room, which has good workability and excellent fire resistance of the pillar. It is intended to

In order to achieve the above object, one aspect of the wall structure according to the present invention is
A wall structure in which a pillar, studs arranged on the left and right sides of the pillar, and a heat insulating material are arranged between an exterior material and an interior material,
The pillar protrudes toward the indoor side compared to the stud,
Steel plates with a hat-shaped cross-section projecting to the indoor side of the studs on the left and right sides of the pillar so as to straddle the indoor side of the pillar. is arranged,
The interior material is fixed to the steel plate and the stud while a portion of the interior material corresponding to the pillar protrudes toward the interior of the room.

According to this aspect, in the wall structure in which a part of the pillar protrudes into the room, the hat-shaped steel plate is arranged across the pillar and the studs on the left and right of the pillar, so that it is arranged around the pillar. A plurality of interior materials can be attached to the steel plate, and integration of the plurality of interior materials can be achieved. In other words, in a wall structure in which a part of the pillar protrudes into the room, a single flat interior material is placed across the pillar and placed on the left and right sides of the pillar, as in a general wall structure. Since it cannot be attached to a stud, it is necessary to arrange multiple interior materials around the pillar so as to adapt to the shape of the pillar. At this time, since the pillars and studs are arranged apart from each other, a great deal of work may be required to individually attach a plurality of interior materials to the pillars and studs. In this aspect, since the hat-shaped steel plates adapted to the column shape are fixed to the left and right studs of the columns, it is possible to efficiently attach a plurality of interior materials to the steel plates.

Furthermore, since the steel plate is provided on the indoor side of the pillar, the pillar can be protected against hot air during a fire in the room, and the fire resistance of the pillar can be improved. In particular, the hat-shaped steel plate extends not only to the indoor side of the pillar, but also to the left and right studs of the pillar. The left and right sides can also be protected from hot air, thus making it possible to protect the entire column from hot air.

In this way, the steel plate is a member that has suitable rigidity for fixing a plurality of interior materials so as to adapt to the pillar shape, and has fire resistance that can protect the pillar against hot air of about 1000 ° C., for example. In addition, since it is a general-purpose product, the material cost is not high.

Further, in another aspect of the wall structure according to the present invention, the interior material is
a first interior material disposed on the interior side of the left and right studs;
A second interior material disposed on the left and right sides of the pillar from the end of the first interior material to the indoor side;
a third interior material disposed on the indoor side of the pillar so as to connect the ends of the left and right second interior materials,
The first interior material, the second interior material, and the third interior material are integrated by the steel plate.

According to this aspect, for one hat-shaped steel plate, for example, two first interior materials, two second interior materials, and one third By attaching the interior materials, a total of five interior materials can be integrally attached to the common member. Therefore, the interior materials are prevented from being displaced relative to each other, and a gap is formed through such relative displacement. side) can be suppressed.

In addition, for example, when each interior material is formed of gypsum board, for example, on the side surface of the gypsum board on the indoor side, the joints of the gypsum board are generally subjected to surface adjustment such as putty treatment, and then a cloth is attached. be done. If a plurality of interior materials are not integrally fixed to a common member, the cloth is likely to wrinkle due to the relative displacement of the interior materials as described above. can also be suppressed.

Another aspect of the wall structure according to the invention is characterized in that there is a gap between the pillar and the steel plate.

According to this aspect, since there is a gap between the pillar and the steel plate, it is possible to make it difficult for the heat of the hot air to be transmitted from the interior material and the steel plate on the back of the interior material to the pillar, and it is possible to prevent thermal bridges.

Another aspect of the wall structure according to the invention is characterized in that a refractory coating is provided in the gap.

According to this aspect, the fireproof performance of the column can be further enhanced by disposing the fireproof coating material in the gap between the column and the steel plate. In addition, this fireproof coating material is arranged only between the indoor side surface of the pillar and the steel plate, and is arranged in a U-shaped cross section between the indoor side surface and the left and right side surfaces of the pillar and the steel plate. There are forms such as

As can be understood from the above description, according to the wall structure of the present invention, in a wall structure in which a part of the pillar protrudes into the room, the wall structure has good workability and excellent fire resistance of the pillar. can be provided.

1 is a cross-sectional view of an example of a wall structure according to a first embodiment; FIG. 1 is a perspective view of an example of a steel plate; FIG. FIG. 11 is a cross-sectional view of an example of a wall structure according to a second embodiment;

Hereinafter, the wall structure according to each embodiment will be described with reference to the accompanying drawings. In addition, in the present specification and drawings, substantially the same components may be denoted by the same reference numerals, thereby omitting duplicate descriptions.

[Wall structure according to the first embodiment]
First, an example of the wall structure according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. Here, FIG. 1 is a cross-sectional view of an example of the wall structure according to the first embodiment, and FIG. 2 is a perspective view of an example of the steel plate.

The wall structure 100 includes a pillar 30, studs 40 arranged at intervals on the left and right sides of the pillar 30, interior materials 50 arranged on the indoor side of the pillar 30, and arranged on the outdoor side of the pillar 30. A frame member 16 provided, an exterior material 10 provided on the outdoor side of the frame member 16, and a single heat insulating material layer 20 (an example of a heat insulating material).

The pillars 30 are formed of square steel pipes, and a plurality of pillars 30 (one pillar 10 is shown in FIG. 1) are arranged at intervals in the width direction of the wall. A stud 40 formed of a rectangular steel pipe is provided. The studs 40 are fixed to upper and lower runners (not shown) or the like extending in the width direction of the wall at upper and lower positions of the wall structure 100 .

The wall structure 100 has a pillar shape in which a part of the pillar 30 protrudes toward the interior side compared to the stud 40 .

A heat insulating reinforcing material 33 formed of polystyrene foam or the like is attached to the outdoor side of the pillar 30, and a shaped steel material (channel steel in the illustrated example) is frame-shaped on the outdoor side of the insulating reinforcing material 33. A frame member 16 is provided which is assembled to.

A heat insulating material layer 20 formed by filling glass wool or rock wool is disposed inside the frame member 16, and an underlay material formed of a glass wool board or the like is provided on the outdoor side of the heat insulating material layer 20. 14 are provided. Vertical beams forming left and right frame-shaped frame members 16 are arranged at the central position of the column 30, and the interface between the left and right vertical beams is arranged at a position corresponding to the vertical joint 11 of the outer wall. , and a spacer 13 formed of a polystyrene foam plate or the like and a unique underlay material 14 are fixed to the left and right vertical beams by fixing means 17 such as screws.

Exterior materials 10 are attached to the outdoor side of the left and right spacers 13, and a water stop material 12 such as a dry gasket is fitted in a vertical joint 11 between the left and right exterior materials 10. - 特許庁The water stop material 12 has two sets of engagement water stop pieces projecting to the left and right in the axial direction. are formed, and another set of engaging water stop pieces is engaged with the underlay material 14 to form a secondary water stop portion. The exterior material 10 is an exterior panel formed of a ceramic-based or metal-based siding board.

A ventilation layer 15 communicating with the outside air is formed between the exterior material 10 and the underlay material 14 . Furthermore, the air insulation layer 60 is formed between the insulation layer 20 and the interior material 50, but instead of the air insulation layer 60, one or two filled insulation layers may be formed.

As shown in FIGS. 1 and 2, on the indoor side surfaces 41 of the studs 40 located on the left and right sides of the pillar 30 so as to straddle the indoor side surface 31 of the pillar 30, portions corresponding to the pillar 30 are located on the indoor side. A steel plate 70 having a hat-shaped cross section projecting outward is fixed by a fixing means 55 such as a screw.

More specifically, the steel plate 70 is fixed to the stud 40 by the fixing means 55 together with the interior material 50 adapted to the pillar shape that protrudes into the room. In the wall structure 100 in which a part of the pillar 30 protrudes into the room, a piece of flat interior material is arranged so as to straddle the pillar like a general wall structure. Since it cannot be attached to a stud, it is necessary to arrange a plurality of interior materials around the pillar 30 so as to adapt to the shape of the pillar. In the illustrated example, around the pillar 30, the interior materials 50 include two first interior materials 51 disposed on the interior side of the left and right studs 40, and the first interior materials 51 on the left and right sides of the pillar 30. Two second interior materials 52 arranged on the indoor side from the end of 51, and one arranged so as to connect the ends of the left and right second interior materials 52 on the indoor side of the pillar 30. It has the 3rd interior material 53 of sheet. The first interior material 51, the second interior material 52, and the third interior material 53 are all made of gypsum board. For example, a moisture-proof sheet made of polyethylene may be provided on the outdoor side of the gypsum board.

As shown in FIG. 1, a plurality of first interior materials 51, second interior materials 52, and third interior materials 53 are fixed to a hat-shaped steel plate 70, which is one member, so that each interior material 51 , 52 and 53 can be easily fixed. In particular, the steel plate 70 is suitable as a member to which the interior material 50 is fixed because it has sufficient rigidity to fix the plurality of interior materials 51 , 52 , 53 .

Here, the method of attaching the steel plate 70 and the interior material 50 will be outlined as follows. First, after the installation of the pillar 30 and the left and right studs 40 is completed, double-sided tape (not shown) is attached to the side surfaces 41 of the left and right studs 40 of the pillar 30, and the left and right double-sided tapes are attached with hat-shaped tapes. The steel plate 70 is temporarily fixed to the left and right studs 40 by sticking the left and right ends of the steel plate 70 .

Next, the left and right first interior members 51 are aligned along the end surfaces of the steel plates 70, and the fixing means 55 is driven into the first interior members 51 from the interior side of the room. Secure to stud 40 .

Next, the left and right second interior members 52 are arranged so as to abut against the ends of the first interior member 51 , and the left and right second interior members 52 are fixed to the steel plate 70 by the fixing means 55 . Finally, the ends of the third interior material 53 are aligned with the ends of the left and right second interior materials 52, and the left and right ends of the third interior material 53 are fixed to the steel plate 70 by the fixing means 55. , the attachment of the steel plate 70 and the interior material 50 to the left and right studs 40 is completed.

By using the steel plate 70 in this manner, it is possible to extremely easily attach the plurality of interior materials 51 , 52 , 53 to the left and right studs 40 via the steel plate 70 .

In addition, since a plurality of interior materials are fixed to the hat-shaped steel plate 70, which is one member, the interior materials 51, 52, and 53 can be prevented from being displaced relative to each other. A gap is generated between the interior materials 51, 52, and 53 due to the displacement, and hot air during a fire in the room can be suppressed from flowing into the back side (pillar side) of the interior material through the formed gap.

Also, in FIG. 1, on the side surface of the interior side of the interior material 50 made of gypsum board, a cloth 56 is attached after surface preparation such as putty treatment is applied to joints of the gypsum board. If the plurality of interior materials 51, 52, 53 are not integrally fixed to the common member, the cloth 56 is likely to wrinkle due to the relative displacement of the interior materials as described above. By suppressing the relative displacement of the interior materials 51, 52, 53, the wrinkling of the cloth 56 can also be suppressed.

Furthermore, as shown in FIG. 1, a hat-shaped steel plate 70 is fixed to the left and right studs 40 of the pillar 30 so as to straddle part of the room-side side 31 and the left and right side 32 of the pillar 30 . With this structure, the pillars 30 can be protected against hot air in the event of a fire in the room, and the fire resistance of the pillars 30 can be improved. In particular, the steel plate 70 is suitable as a fire-resistant member for the column 30 because it has a fire-resistant performance capable of protecting the column 30 against hot air of about 1000° C., for example.

In this way, steel plates 70 having a hat-shaped cross section are fixed to the indoor side surfaces 41 of the studs 40 on the left and right sides of the pillar 30 so as to straddle the indoor side surface 31 of the pillar 30 . By fixing a plurality of interior materials 51, 52, 53, the wall structure 100 in which a part of the pillar 30 protrudes to the indoor side has good workability and excellent fire resistance of the pillar 30. A wall structure is obtained.

In the wall structure 100 shown in FIG. 1 , a gap 80 is provided between the side surface 31 and the left and right side surfaces 32 of the column 30 and the steel plate 70 . By providing the gap 80 in this way, it is possible to make it difficult for the heat of the hot air to be transmitted from the interior material 50 and the steel plate 70 on the back surface thereof to the pillar 30, thereby preventing thermal bridges.

[Wall structure according to the second embodiment]
Next, an example of the wall structure according to the second embodiment will be described with reference to FIG. Here, FIG. 3 is a cross-sectional view of an example of the wall structure according to the second embodiment.

In the wall structure 100A shown in FIG. 3, in the gap 80 between the indoor side 31 and the left and right side 32 of the pillar 30 and the steel plate 70, for example, a nonflammable and fibrous fireproof covering material 90 is disposed. wall structure. By closing the gap 80 with the fireproof covering material 90, the indoor side surface 31 and the left and right side surfaces 32 of the column 30 are completely surrounded by the fireproof covering material 90 having a U-shaped cross section. The fire resistance can be further improved, and the wall structure 100A can have even more excellent fire resistance.

It should be noted that other embodiments may be possible in which other constituent elements are combined with the configurations listed in the above embodiments, and the present invention is not limited to the configurations shown here. . Regarding this point, it is possible to change without departing from the gist of the present invention, and it can be determined appropriately according to the application form.

10: exterior material, 11: vertical joint, 12: gasket, 13: spacer, 14: underlay material, 15: ventilation layer, 16: frame member, 17: fixing means, 20: heat insulating material layer (heat insulating material), 30 : Column (square steel pipe), 40: Stud, 50: Interior material, 51: First interior material (interior material), 52: Second interior material (interior material), 53: Third interior material (interior material), 55 : Fixing means 56: Cloth 60: Air insulation layer 70: Steel plate 80: Gap 90: Fireproof covering material 100, 100A: Wall structure

Claims (4)

A wall structure in which a pillar, studs arranged on the left and right sides of the pillar, and a heat insulating material are arranged between an exterior material and an interior material,
The pillar protrudes toward the indoor side compared to the stud,
Steel plates with a hat-shaped cross-section projecting to the indoor side of the studs on the left and right sides of the pillar so as to straddle the indoor side of the pillar. is arranged,
A wall structure, wherein the interior material is fixed to the steel plate and the stud while a portion of the interior material that corresponds to the pillar protrudes toward the interior of the room. The interior material is
a first interior material disposed on the interior side of the left and right studs;
A second interior material disposed on the left and right sides of the pillar from the end of the first interior material to the indoor side;
a third interior material disposed on the indoor side of the pillar so as to connect the ends of the left and right second interior materials,
2. The wall structure according to claim 1, wherein said first interior material, said second interior material and said third interior material are integrated by said steel plate. 3. A wall structure according to claim 1 or 2, characterized in that there is a gap between said pillar and said steel plate. 4. A wall structure according to claim 3, characterized in that a refractory coating is arranged in said gap.

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