WO2015181903A1

WO2015181903A1 - Wall structure for building

Info

Publication number: WO2015181903A1
Application number: PCT/JP2014/064092
Authority: WO
Inventors: 良清藤井; 岩崎　隆
Original assignee: 大和ハウス工業株式会社
Priority date: 2014-05-28
Filing date: 2014-05-28
Publication date: 2015-12-03

Abstract

　Provided is a wall structure for a building, whereby a gap in a wall can be prevented from enlarging due to fire heat. A first interior substrate (2) comprising a non-combustible material is provided on an indoor side of a panel frame (11). A second interior substrate (4) comprising a non-combustible material is affixed by an elastic adhesive (3) to the indoor side of the first interior substrate (2). The second interior substrate (4) is affixed to the first interior substrate (2) by the elastic adhesive (3). The second interior substrate (4) therefore does not move so as to follow movement of the first interior substrate (2). Consequently, even when a gap at a substrate joint location (13B) of the second interior substrate (4) is enlarged by fire heat, a gap at an interior joint location (13C) of an interior material (5) is prevented from enlarging, and fire resisting performance of the wall can be enhanced.

Description

Building wall structure

This invention relates to a wall structure of a building using an outer wall panel frame.

As shown in FIG. 5, in a conventional building wall structure 101, an outer wall plate 112 is provided on a surface on the outdoor side of a rectangular frame-shaped outer wall panel frame 111, and an interior material is provided on an indoor surface via an interior base 102. 105 is provided. The two outer wall plates 112 are arranged vertically, and the edges of each outer wall plate 112 are adjacent to form a joint portion 113. Two interior bases 102 are also arranged on the top and bottom, and the edges of each interior base 102 are adjacent to form a joint location 106. Also, two interior materials 105 are arranged vertically, and the edges of each interior material 105 are adjacent to form a joint portion 107.

FIG. 6A is an enlarged horizontal sectional view of the vertical frame portion (grooved steel) of the outer wall panel frame 111 and the vicinity thereof in the wall structure 101. The outer wall plate 112 is fixed to the surface on the outdoor side of the vertical frame portion by a fixing member 112a such as a screw. The interior base 102 and the interior material 105 are fixed to the indoor side surface of the vertical frame portion by a fixing member 151 such as a screw.

Patent Document 1 discloses a wall structure in which outer wall panel frames are arranged on both sides of a pillar. On the indoor side of the outer wall panel frame, a base frame for attaching a fireproof plate is fixed with screws or the like. A strip-shaped fireproof plate extending in the vertical direction is fixed to the base frame with screws or the like on the indoor side surface of the base frame. The interior material is attached with screws or the like with the fireproof plate as a base.

JP 2009-179974 A

FIG. 6B is a longitudinal sectional view showing a state of the

joint portions

106, 107, 113 after the outdoor heating test for the conventional wall structure 101. The outer wall panel frame 111 has a property of expanding by heating, while the outer wall plate 112 has a property of drying and shrinking by heating. For this reason, at the time of a fire, the clearance gap between the said joint locations 113 expands, and it becomes easy for heat to flow in through a wall. And the clearance gap of the said joint location 106 also expands with the expansion | swelling of the said outer wall panel frame 111 at the time of a fire. When the gap between the joint portions 106 is enlarged, the gap between the joint portions 107 of the interior material 105 is enlarged, so that heat easily flows through the wall. That is, in the conventional wall structure, there is a risk that the heat at the time of the fire expands the gap between the joint portions, and the fire heat flows in or out through the wall.

Further, the wall structure described in Patent Document 1 cannot exhibit sufficient fire resistance against the expansion of the gap at the joint as described above.

This invention makes it a subject to provide the wall structure of the building which can prevent that the clearance gap which exists in a wall by fire heat expands in view of said situation.

In order to solve the above-mentioned problem, the wall structure of the building of the present invention includes a first interior base fixed by a fixing member on the indoor side of the outer wall panel frame, and the first interior base so as not to follow the movement of the first interior base. And a second interior base provided on the indoor side of the first interior base, and an interior material fixed to the indoor side of the second interior base by a fixing member.

If it is said structure, since the said 2nd interior base is provided so that the movement of the said 1st interior base may not be followed, even if the said 1st interior base moves by the thermal expansion at the time of the fire of the said outer wall panel frame The second interior base does not move. Since the second interior base does not move, it is possible to prevent a gap existing on the wall from expanding.

Further, the inside of the outer wall panel frame may be a hollow space without a heat insulating material. In such a wall structure that does not include a heat insulating material, there is nothing that hinders the inflow and outflow of fire heat, so high-temperature air tends to be ejected from the enlarged gap. Therefore, the present invention becomes more useful particularly in such a wall structure.

A plurality of the outer wall plates provided on the outer wall panel frame are adjacent to each other to form an outer wall joint portion, and a plurality of the inner walls provided on the outer wall panel frame are adjacent to each other to form an interior. Joint locations may be formed. In addition, a base joint portion may be formed by adjoining each edge of the first interior base provided in plurality on the outer wall panel frame. When the wall structure has such a joint location, a gap between the joint locations is enlarged during a fire, and high-temperature air is likely to be ejected. Therefore, the present invention becomes more useful particularly in such a wall structure.

The height of the outer wall joint location, the interior joint location and the base joint location may be the same. Thus, if the height of each joint location is the same, a linear air path will arise between them, and high temperature air will be easy to eject. Therefore, the present invention becomes more useful particularly in such a wall structure.

The second interior base may be attached to the first interior base with an elastic adhesive. According to this, the structure in which the second interior base does not follow the movement of the first interior base can be realized by an inexpensive elastic adhesive.

The first interior base may be formed of a lip groove type member, and the second interior base may be fitted in the first interior base. According to this, the structure in which the second interior base does not follow the movement of the first interior base can be realized without using the elastic adhesive.

If it is this invention, there exists an effect that it can prevent that the clearance gap which exists in a wall by fire heat expands, and can improve the fireproof performance of a wall.

It is the figure which showed the wall structure of the building concerning embodiment of this invention, Comprising: The same figure (A) is a front view, The same figure (B) is the outline of the AA arrow of the same figure (A). It is sectional drawing and the figure (C) is a schematic left view. 1A is a schematic horizontal sectional view in the vicinity of the vertical frame portion in the wall structure of FIG. 1, and FIG. 1B is a schematic sectional view taken along the line BB of FIG. 1A. It is general | schematic sectional drawing which showed the state after the outdoor heating test in the same location as FIG. 2 (B). It is the figure which showed the wall structure of the building concerning other embodiment of this invention, Comprising: The figure (A) is a schematic horizontal sectional view of the vicinity of a vertical frame part, The figure (B) is the figure ( FIG. 6 is a schematic cross-sectional view taken along the line BB of A). It is explanatory drawing which showed the wall structure of the conventional building. 5A is a schematic horizontal sectional view in the vicinity of the vertical frame portion in the wall structure of FIG. 5, and FIG. 4B is a schematic vertical sectional view in the vicinity of the vertical frame portion.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1 (A), FIG. 1 (B), and FIG. 1 (C), each outer wall panel 1 has a panel frame (outer wall panel frame) 11 formed in a square frame shape, for example. ing. The panel frame 11 is composed of, for example, left and right vertical frame portions made of channel steel and upper and lower horizontal frame portions made of channel steel. Since the panel frame 11 does not contain a heat insulating material such as glass wool, the inside of the panel frame 11 is a hollow space.

The outer wall plate 12 is fixed to the outdoor side of the panel frame 11. As an example, the width of the outer wall plate 12 is wider than the width of the panel frame 11, so that pillars can be arranged between the panel frames 11. Of course, the structure is not limited to this. The panel frame 11 may be provided with a horizontal beam or a vertical beam.

Each edge of the above-mentioned outer wall board 112 attached up and down to each panel frame 11 is adjacent, and this adjacent part serves as outer wall joint part 13A. The outer wall plate 12 is made of a ceramic material, a metal material, a concrete material, or the like. The panel frame 11 is attached to a housing such as the pillar. A joint tape is affixed to the outer wall joint portion 13A, and the joint is waterproofed by the joint tape. A metal lath is fixed to the outer wall plate 12 with an adhesive or a nail. Mortar is applied to the metal lath.

Further, as shown in FIGS. 2A and 2B, the outer wall plate 12 is fixed to the panel frame 11 by fixing members (screws, drill screws, etc.) 12a.

A first interior base 2 made of a noncombustible material is provided on the indoor side of the panel frame 11. The first interior base 2 is fixed to the panel frame 11 by fixing members (screws, drill screws, etc.) 21. Two pieces of the first interior base 2 are also arranged vertically. And each edge of the said 1st interior base | substrate 2 arrange | positioned 2 sheets is adjacent, and this adjacent location turns into base joint location 13B.

A second interior base 4 made of a non-combustible material is stuck to the indoor side of the first interior base 2 with an elastic adhesive 3. The second interior base 4 does not have a joint location. The elastic adhesive 3 is, for example, a liquid that is initially applied and becomes a rubber-like elastic body when cured. As the main component of the elastic adhesive 3, for example, a modified silicone polymer or urethane is used. The elastic adhesive 3 preferably has an elongation rate that can absorb the amount of movement of the first interior base 2 (the amount of linear expansion of the panel frame 11) generated by fire heat. The elastic adhesive 3 desirably has fire resistance. As such an elastic adhesive having fire resistance, for example, an adhesive mainly composed of a modified silicone polymer or urethane can be used.

The interior material 5 is fixed on the second interior base 4 by a fixing member (screw, drill screw or the like) 51. The interior material 5 is made of gypsum board, for example. Two interior materials 5 are also arranged on the top and bottom. And each edge of the said interior material 5 arrange | positioned 2 sheets in this way adjoins, and this adjacent location turns into interior joint location 13C. In this embodiment, the heights of the outer wall joint location 13A, the base joint location 13B, and the interior joint location 13C are the same, but they may not be the same.

FIG. 3 shows a state after the outdoor heating test at the same location as FIG. 2 (B). The outer wall plate 12 contracts by heating, and the first interior base 2 moves following the thermal expansion of the panel frame 11. For this reason, a gap between the outer wall joint portion 13A and the base joint portion 13B is enlarged. However, since the second interior base 4 is affixed to the first interior base 2 by the elastic adhesive 3, the second interior base 4 moves following the movement of the first interior base 2. There is no. Therefore, it is possible to prevent the gap between the interior joint portions 13C in the interior material 5 from being enlarged, and the fire resistance performance of the wall can be improved. Even if a joint location is formed on the second interior base 4, expansion of the gap between the joint locations can be suppressed by absorbing the movement of the first interior base 2 by the elastic adhesive 3. Further, in this embodiment, the structure in which the second interior base 4 does not move following the movement of the first interior base 2 is realized by the inexpensive elastic adhesive 3.

Next, another embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 4A and 4B, a first interior base 2A made of a lip-groove steel plate is provided on the indoor side surface of the panel frame 11. The first interior base 2A is fixed to the panel frame 11 by fixing members (screws, drill screws, etc.) 22 penetrating the flange portion of the panel frame 11.

The second interior base 4A is fitted in the first interior base 2A. This fitting is performed by press-fitting, for example, and the second interior base 4A does not loosen in the first interior base 2A. The second interior base 4A is made of non-combustible wood or a non-combustible material. The second interior base 4A is formed with a longitudinal groove that avoids interference with the head of the fixing member 22. In addition, it is good also as not providing the said vertical groove by making the head of the said fixing member 22 into a countersunk head.

The interior material 5 is provided on the indoor side of the second interior base 4A. Two interior materials 5 are arranged on the top and bottom, and the interior joint portion 13C is formed. The interior material 5 is fixed to the second interior base 4A by the fixing member 51 that is passed between the lip portions of the first interior base 2A.

Since the second interior base 4A is fitted in the first interior base 2A, it does not follow the movement of the first interior base 2A. Therefore, the expansion of the gap between the interior joint portions 13C of the interior material 5 is prevented, and the fire resistance performance of the wall can be improved. In this embodiment, the structure in which the second interior base 4 does not move following the movement of the first interior base 2 is realized without using the elastic adhesive 3.

As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

DESCRIPTION OF SYMBOLS 1 Outer wall panel 11 Panel frame 12 Outer wall board 12a Fixing member 13A Outer wall joint location 13B Base joint location 13C Interior joint location 2 First interior base 2A First interior base 21 Fixing member 22 Fixing member 4 Second interior base 4A Second interior base 5 Interior material 51 Fixing member

Claims

A first interior base fixed by a fixing member to the indoor side of the outer wall panel frame; a second interior base provided on the indoor side of the first interior base so as not to follow the movement of the first interior base; 2. A wall structure of a building, comprising: an interior material fixed to the indoor side of the interior base by a fixing member.
The building wall structure according to claim 1, wherein the inside of the outer wall panel frame is a hollow space without a heat insulating material.
3. The building wall structure according to claim 1, wherein a plurality of the outer wall plates provided on the outer wall panel frame are adjacent to each other to form an outer wall joint portion, and the outer wall panel frame includes A wall structure of a building, characterized in that an interior joint location is formed by adjoining each edge of the plurality of interior materials provided.
4. The building wall structure according to claim 3, wherein a plurality of said first interior foundations provided on said outer wall panel frame are adjacent to each other to form a foundation joint location. .
5. The building wall structure according to claim 4, wherein the heights of the outer wall joint location, the interior joint location, and the base joint location are the same.
6. The building wall structure according to claim 1, wherein the second interior base is attached to the first interior base with an elastic adhesive.
The building wall structure according to any one of claims 1 to 5, wherein the first interior base is formed of a lip groove member, and the second interior base is fitted in the first interior base. A wall structure of a building characterized by being made.