JP6674217B2 - Fire wall - Google Patents

Description

  The present invention relates to a fireproof wall having fireproof performance used for an outer wall or the like, and particularly to a fireproof wall including a plurality of vertical bars and a plurality of divided interior materials attached to the vertical bars. It is about.

Residential buildings may be required to take fire protection measures.
As one of such fireproof measures, fireproof measures for joints and gaps are taken.
For example, a thermal expansion material that expands when receiving heat and that closes the joint or the gap may be arranged in the joint or the gap (for example, see Patent Literature 1 and Patent Literature 2).
Patent Literature 1 discloses a technology regarding a fire-resistant wall structure of a partition wall.
In this technique, a heat-expandable refractory material is arranged between the upper end of the runner, which serves as the skeleton of the partition wall, and the ceiling, or between the lower end of the runner and the floor. With this configuration, in the event of a fire, the heat-expandable refractory material expands due to the heat, and closes the gap formed between the upper end of the runner and the ceiling and the gap formed between the lower end of the runner and the floor. It is configured as follows.

Patent Document 2 discloses a panel-type external heat-insulating fire-resistant outer wall structure.
Vertical joints are formed between the left and right outer wall panels, and external heat insulating materials are arranged on the indoor sides of these left and right outer walls.
The gap between these outer heat insulators is also arranged at the position of the vertical joint formed between the left and right outer wall panels (the separation width between the left and right outer heat insulators is smaller than the vertical joint).
In addition, columns are arranged on the indoor side of these external heat insulators, and the outer surfaces of the columns face the vertical joint and the gap between the external heat insulators.
Then, a thermally expandable refractory material is interposed between the outer surface of the pillar and the outer heat insulating material.
That is, the portion between the vertical joint and the gap between the external heat insulating material and the outer surface of the pillar is cut off by the heat-expandable refractory material.
In this technology, the heat at the time of fire causes the heat-expandable refractory material to expand, thereby closing the gap between the outer heat insulating materials and the vertical joint, and preventing heat from entering through the gap between the vertical joint and the outer heat insulating material. And protect the pillars from the heat of fire.

JP 2012-052333 A JP 2007-297875 A

On the other hand, unlike a gap formed between a structure (a ceiling or a floor) of a building and a runner or a gap formed as a joint, the gap is formed not for the first time but for some factor. There is a need for fireproofing the gap.
The technologies of Patent Document 1 and Patent Document 2 are configurations in which a thermally expandable refractory material is refrained from a gap formed in the first place. In particular, the technique of Patent Document 2 protects a pillar inside a wall by blocking heat that enters from the outside through a vertical joint and enters the inside.
For this reason, it has been necessary to take fireproof measures not for the gap formed in the first place but for the gap formed for some reason.
In other words, as an outer wall that requires fire resistance performance against fire, such as a fire-resistant outer wall, there is one in which the interior base bar is made of steel and an interior material such as a gypsum board is adhered to the surface.
In a fire-resistant wall having such a structure, for example, in the case of a fire-resistant wall having a large height such as a stairwell, it is necessary to add an interior material vertically, and a seam is formed at a boundary between the vertically adjacent interior materials. Is formed.
In such a case, since the vertical rail made of steel and the interior material such as the gypsum board have different thermal characteristics, a gap may be generated at the boundary due to heat at the time of fire.
In such a case, since the heat of the fire will erupt from the gap generated at the boundary, it is necessary to prevent the phenomenon.
Conventionally, in order to improve the fire resistance performance of such a boundary portion, another interior material is stuck to the outside of the interior material so as to shift the boundary portion, and a gap formed at the boundary portion of the interior interior material is provided. To prevent the heat of fire from escaping.
However, such a conventional method requires one more interior material, which increases the manufacturing cost and increases the number of man-hours for manufacturing the fire-resistant wall.
Under such circumstances, there has been a demand for a technique for preventing a phenomenon in which heat of a fire is blown out from a gap generated at a boundary portion of an interior material with a simple configuration while suppressing costs.

  An object of the present invention is to solve the above-described problems, and to provide a fire-resistant wall capable of realizing fire resistance in a gap portion generated with respect to a seam of an interior material connected in a vertical direction with a simple configuration and low cost. To provide.

According to the fire wall according to claim 1, the above-described object is to provide a rectangular frame, a base including a vertical bar and a horizontal bar having a property of being elongated by heating, and a base of the vertical bar and the horizontal bar. And at least an interior material that is disposed on the indoor side and is attached to the base. The interior material has a property of shrinking by heating, and is divided into upper and lower portions by using the horizontal rail portion as a horizontal rail boundary. are, the interior material is fixed to the vertical bars, and the lower end of the upper interior material disposed above said crossbar portion boundary as a boundary, the lower interior material disposed below Is fixed to the cross rail in a state where the upper cross section is abutted, and a heat-expandable refractory material is provided on the side of the cross rail on which the interior material is stuck. The lower end of the upper interior material and the lower interior material. The upper end portion is fixed to the horizontal rail via the thermal expansion refractory material, and the thermal expansion refractory material is interposed between the horizontal rail boundary and the horizontal rail. Can be solved.

As described above, in the fire-resistant wall according to the present invention, the interior material is divided into the upper interior material and the lower interior material with the horizontal rail as the boundary (the horizontal rail boundary). For this reason, a horizontal rail boundary, which is a boundary, is formed in the divided portion.
In addition, the lower end of the upper interior material and the upper end of the lower interior material are fixed to the horizontal rail, and they are also fixed to the vertical rail.
In the present invention, the vertical rails are elongated by heating, and the interior materials (upper interior material and lower interior material) are contracted by heating. The lower end of the upper interior material and the upper end of the lower interior material that have been abutted are separated from each other, and a gap is created between the two.
However, in the present invention, since the heat-expandable refractory material is interposed between the horizontal beam portion boundary and the horizontal beam, the heat-expandable refractory material expands due to heat, and the lower end of the upper interior material is The gap generated between the lower interior material and the upper end can be closed.
Therefore, it is possible to prevent the hot air received from the side opposite to the interior material from being spouted from the gap generated between the lower end of the upper interior material and the upper end of the lower interior material, and the fire resistance performance is improved.
Further, as described above, in the fire-resistant wall according to the present invention, the interior material is disposed on the indoor side of the vertical bar and the horizontal bar (constituting the interior base bar).
Then, the heat-expandable refractory material is fixed to the indoor side of the horizontal rail. That is, in the horizontal rail, it is fixed on the side opposite to the outdoor side (heating side).
For this reason, even if the lower end of the upper interior material and the upper end of the lower interior material that have been butted are separated by heating, and a gap is formed between the two, the gap is formed by the expansion of the heat-expandable refractory material. It is possible to effectively prevent the closed air from blowing out the hot air to the indoor side.

At this time, as a specific configuration, as described in claim 2, a plurality of the vertical bars are provided, and the interior material is divided in a horizontal direction with the vertical bar portion as a vertical bar boundary. It is preferable that, at the portion of the vertical rail, each of the interior materials that are arranged side by side in the horizontal direction is fixed to the vertical rail in a state where the ends are abutted against each other.
Usually, in the structure of a fire-resistant wall, a plurality of vertical rails are often arranged, but as the number of vertical frames that apply force in the direction of extension when heated is increased, the lower end of the upper interior material is increased. A gap is easily generated between the upper interior material and the lower interior material.
However, the present invention has a configuration in which a gap generated between the lower end of the upper interior material and the upper end of the lower interior material is closed, so that the present invention can be applied favorably even in such a situation.

Further, as a detailed configuration, it is preferable that, as described in claim 3, the vertical bar is a long member made of steel, and the interior material is a heat-shrinkable plate.
With such a configuration, the vertical bar is formed by a long member (stud or the like) made of steel that is usually used, and a gypsum board or the like that is usually used can be used as an interior. This is preferable because a special member or the like is not required, and a fire-resistant wall can be easily formed by a commonly used member.

Furthermore, as the detailed construction, there is used as the outer wall, as before Symbol thermally expandable fireproof material, interposed between the outdoor side surface of the interior material and interior sides of the rungs, the It is preferable to be fixed to the indoor side of the horizontal rail .

In the fire-resistant wall according to the present invention, when receiving heat, the lower end of the upper interior material and the upper end of the lower interior material that have been abutted at the horizontal rail portion are separated from each other, and a gap is generated between the two. Also, since the heat-expandable refractory material is interposed between the crossbar boundary and the horizontal beam, the heat-expandable refractory material expands due to the heat, and the lower end of the upper interior material and the upper end of the lower interior material. It is possible to close the gap generated between the two parts. For this reason, it is possible to prevent hot air received from the side opposite to the interior material from being spouted from the gap generated between the lower end of the upper interior material and the upper end of the lower interior material, and fire resistance is improved.
As described above, in the fire-resistant wall according to the present invention, it is not necessary to dispose an extra interior material, and a simple configuration and low cost can be achieved, and the seam of the interior material that is joined in the vertical direction (horizontal bar boundary). , The fire resistance in the gap portion generated can be realized.

It is a front view of the fire-resistant wall concerning one embodiment of the present invention. It is an explanatory view showing an interior foundation bar of a fire-resistant wall concerning one embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. 1. It is explanatory drawing which shows the state at the time of the fire of the refractory wall which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The configuration described below does not limit the present invention, but can be variously modified within the scope of the present invention.
The present embodiment relates to a fire-resistant wall configured to effectively perform fire resistance in the event of a fire in a gap generated between seams of an interior material connected in a vertical direction.

  1 to 4 show an embodiment according to the present invention. FIG. 1 is a front view of a fire-resistant wall, FIG. 2 is an explanatory diagram showing an interior base bar of the fire-resistant wall, and FIG. FIG. 4 is a sectional view taken along the line A, and FIG.

<About the structure of the fire-resistant wall>
The fire-resistant wall 1 according to the present embodiment will be described with reference to FIGS.
The fire-resistant wall 1 according to the present embodiment is, for example, a wall used as an outer wall or the like.
In the present embodiment, one formed in a panel shape is used.
FIG. 1A shows an external plan view of the fire-resistant wall 1.
As shown in FIGS. 1A and 1B, the fireproof wall 1 according to the present embodiment has a plurality of interior materials 11 divided and attached.

In order to distinguish them, the interior material 11 disposed below is referred to as “lower interior material 11A”, and the interior material 11 disposed above is referred to as “upper interior material 11B”.
In this embodiment, both the lower interior material 11A and the upper interior material 11B are divided into three pieces.
For convenience of explanation, the interior materials arranged below are referred to as “first lower interior material 11a”, “second lower interior material 11b”, and “third lower interior material 11c” from the left in the drawing. The interior materials arranged above are referred to as “first upper interior material 11d”, “second upper interior material 11e”, and “third upper interior material 11f” from the left in the drawing.
In this example, the first lower interior material 11a, the second lower interior material 11b, and the third lower interior material 11c are formed of the same shape of gypsum board.
Similarly, the first upper interior material 11d, the second upper interior material 11e, and the third upper interior material 11f are formed of a plaster board of the same shape.

Note that a first horizontal boundary K11 is formed between the first lower interior material 11a and the first upper interior material 11d, and similarly, the second lower interior material 11b and the second upper interior material 11d are formed. 11e, a horizontally extending second boundary K12 is formed, and between the third lower interior material 11c and the third upper interior material 11f, a horizontally extending third boundary K13 is formed.
The first horizontal boundary K11, the second horizontal boundary K12, and the third horizontal boundary K13 are horizontally connected in the horizontal direction and constitute a "horizontal boundary K1".
The laterally extending boundary K1 corresponds to a “lateral crossing part boundary” in the claims.

In addition, a similar boundary portion is formed in the vertical direction, and the boundary between the first lower interior material 11a and the second lower interior material 11b is referred to as a “lower vertical extension first boundary K21”. The boundary between the first upper interior material 11d and the second upper interior material 11e is referred to as "upper vertically extending first boundary K22".
The lower vertically extending first boundary K21 and the upper vertically extending first boundary K22 are connected in the up-down direction, and constitute a "first vertically extending boundary K2".
Similarly, a boundary between the second lower interior material 11b and the third lower interior material 11c is referred to as a “lower vertically extending second boundary K31”, and a boundary between the second upper interior material 11e and the third upper interior material 11f. This will be referred to as “upper vertical second boundary K32”.
The lower vertically extending second boundary K31 and the upper vertically extending second boundary K32 are connected in the vertical direction, and constitute a "second vertically extending boundary K3".
The first vertically extending boundary K2 and the second vertically extending boundary K3 correspond to the "vertical cross section boundary" in the claims.

Next, FIG. 2 shows a base structure serving as a skeleton of the refractory wall 1.
In the present embodiment, the base 12 is formed by using a plurality of long members made of steel and assembling them into a rectangular shape.
More specifically, the base 12 includes a frame 12a assembled in a rectangular frame shape, five vertical bars 12b extending vertically in an inner space of the frame 12a, and A horizontal rail 12c is provided to extend in the horizontal direction (horizontal direction) with respect to the frame body 12a.
Then, the first longitudinally extending boundary K2 is arranged so as to face the second vertical bar 12b from the left side in FIG. 2, and the first longitudinally extending boundary K2 is arranged so as to face the second vertical bar 12b from the right side. Two vertically extending boundaries K3 are arranged.

In other words, the state where the lateral end of the first lower interior material 11a and the lateral end of the second lower interior material 11b abut (abut) on the first vertically extending first boundary K2. Thus, these lateral ends are fastened to the vertical bar 12b by the fastening member T, and the lateral ends of the first upper interior material 11d and the lateral ends of the second upper interior material 11e abut against each other ( In this state, these ends are fastened to the vertical rail 12b by the fastening members T.
Therefore, naturally, the first longitudinally extending boundary K2 which is a boundary between the first lower interior material 11a and the second lower interior material 11b and a boundary between the first upper interior material 11d and the second upper interior material 11e. Face the outer side surface of the vertical rail 12b.
The same applies to the second vertical boundary K3.

As shown in FIGS. 2 and 3, a heat-expandable refractory material 13 is provided on the outer side surface (the surface on which the interior material 11 is stuck) of the horizontal rail 12 c. The laterally extending boundary K1 is arranged so as to face the heat-expandable refractory material 13 arranged in the horizontal direction.
In other words, the upper end of the first lower interior material 11a and the lower end of the first upper interior material 11d are vertically abutted (abutted), and the upper end of the second lower interior material 11b and the second upper A state in which the lower end portion of the interior material 11e abuts (abuts) in the vertical direction, and the upper end portion of the third lower interior material 11c and the lower end portion of the third upper interior material 11f abut in the vertical direction. (In contact with each other), these ends are attached to the cross rail 12c by the fastening member T via the thermally expandable refractory material 13.

The heat-expandable refractory 13 expands and expands in volume when it receives heat. In the present embodiment, a sheet-type refractory material is used. As the material of the heat-expandable refractory material 13, a known material such as a rubber material is used.
As shown in FIG. 3, a heat-expandable refractory material 13 is disposed on the horizontal rail 12 c so as to cover the outer side surface (the surface on which the interior material 11 is stuck) of the horizontal rail 12 c. .
The laterally extending boundary K1 is arranged so as to face the thermally expandable refractory material 13.
In other words, the configuration is such that the thermally expandable refractory material 13 is interposed between the horizontal rail 12c and the horizontal boundary K1.
Here, as shown in FIG. 3, the laterally extending boundary K1 according to the present embodiment is constructed such that no gap is formed in the normal state. At least, it is not intended that a gap be formed in terms of design.

<State during heating>
The state where the refractory wall 1 configured as described above is heated will be described with reference to FIGS.
When heated from the heating direction in FIG. 3 (that is, when heated from the outdoor side), since the vertical bar 12b is made of steel, it extends vertically.
However, since the interior material 11 which is a gypsum board contracts when heated, the portion of the horizontal extending boundary K <b> 1 expands to form a gap P.
However, in the present embodiment, since the heat-expandable refractory material 13 is interposed between the horizontal extending boundary K1 and the horizontal rail 12c, the heat-expandable refractory material 13 expands when heated.
For this reason, the heat-expandable refractory material 13 closes the gap P, so that it is possible to effectively prevent the hot air from being blown out to the side opposite to the heating direction, and to secure a high fire resistance performance at the location. be able to.
That is, it is possible to effectively prevent hot air from blowing out to the indoor side.

As described above, according to the fire-resistant wall 1 according to the above-described embodiment, even when the horizontal extension boundary K1 which is the boundary portion of the interior material 11 joined in the vertical direction is expanded by heating to become the gap P. The gap P can be effectively closed by the expanded heat-expandable refractory material 13.
Therefore, it is possible to effectively prevent hot air from being ejected in the direction opposite to the heating side, and it is possible to ensure high fire resistance.
Thus, instead of arranging the heat-expandable refractory material on the outer joint of the outer wall as in the related art, in the present embodiment, the joint portion of the interior material 11 disposed on the indoor side of the outer wall is provided. On the other hand, the heat-expandable refractory material 13 was arranged. That is, the heat-expandable refractory material 13 is arranged on the indoor side of the horizontal rail 12c constituting the groundwork 12, and even if the joint portion of the interior material 11 is opened by the heat, it is possible to effectively prevent the hot air from blowing into the room. It was configured to be able to. Therefore, high fire resistance can be secured.
In the present embodiment, the outer wall is exemplified as the refractory wall 1. However, the present invention is not limited to this. For example, the structure according to the present embodiment is effectively applied to an inner wall, a partition wall, and the like. is there.

DESCRIPTION OF SYMBOLS 1 Fireproof wall 11 Interior material 11A Lower interior material 11a First lower interior material 11b Second lower interior material 11c Third lower interior material 11B Upper interior material 11d First upper interior material 11e Second upper interior material 11f Third upper interior Material 12 Base 12a Frame 12b Vertical beam 12c Horizontal beam 13 Thermally expandable refractory material K1 Horizontally extending boundary (horizontal beam boundary)
K11 Horizontal first boundary K12 Horizontal second boundary K13 Horizontal third boundary K2 First vertical boundary (vertical bar boundary)
K21 Lower longitudinal extension first boundary K22 Upper longitudinal extension first boundary K3 Second longitudinal extension boundary (vertical cross section boundary)
K31 Lower longitudinally extending second boundary K32 Upper longitudinally extending second boundary P Gap T Fastening member

Claims (4)

A base provided with a vertical bar and a horizontal bar having a property of being elongated by heating, on a rectangular frame,
An interior material that is disposed on the indoor side of the vertical rail and the horizontal rail, and is attached to the base,
The interior material has a property of shrinking by heating, and is divided into upper and lower portions with the horizontal rail portion as a horizontal rail boundary,
The interior material is fixed to the vertical rail, and a lower end of an upper interior material provided above the horizontal rail boundary and an upper end of a lower interior material provided below. And are fixed to the cross rail in a state where they are abutted,
In the crosspiece, a heat-expandable refractory material is provided on a surface on which the interior material is attached,
In the interior material, a lower end of the upper interior material and an upper end of the lower interior material are fixed to the cross rail via the thermally expandable refractory material, and the horizontal cross section boundary and A fire-resistant wall, characterized in that the heat-expandable refractory material is interposed between the horizontal bar and the cross bar. The vertical bar is provided with a plurality,
The interior material is horizontally divided with the vertical cross section as a vertical cross section boundary,
2. The fire-resistant wall according to claim 1, wherein, at the vertical rail portion, the respective ends of the interior materials that are arranged side by side in a horizontal direction are fixed to the vertical rail in a state where they are abutted with each other.   The fire wall according to claim 1, wherein the vertical bar is a long member made of steel, and the interior material is a heat-shrinkable plate-shaped body. Used as an outer wall ,
Before SL thermally expandable fireproof material, according to claim 1, characterized in that said so as to be interposed between the indoor side of the rungs and outdoor sides of the interior material, and is fixed to the interior side of the lateral beam or refractory walls according to any one of claims 3.

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