JP7169320B2 - Fireproof structure - Google Patents

Description

TECHNICAL FIELD The present invention generally relates to a fire-resistant structure, and more particularly to a fire-resistant structure having an outer wall and a pillar provided on the indoor side of the outer wall in a steel-framed building.

Fire-resistant buildings are broadly classified into fire-resistant buildings and quasi-fire-resistant buildings as stipulated by the Building Standards Law, depending on the level of fire resistance. In fire-resistant buildings, structures such as walls, columns, beams, and floors must have a certain level of fire-resistant performance. For example, in the case of a fire-resistant building with a predetermined number of floors, the fire-resistant structure of the outer wall is required to have fire-resistant performance for one hour (Article 107 of the Enforcement Ordinance of the Building Standards Law).

In particular, various constructions have been employed to improve the fire resistance of exterior walls and columns on the indoor side of exterior walls.

For example, Patent Literature 1 describes an exterior wall structure in which partition panels each having two gypsum boards are provided on the outdoor side and the indoor side.

Moreover, Patent Document 2 describes covering the periphery of the pillars on the indoor side of the exterior wall with a fireproof covering material after constructing the exterior wall.

JP 2004-176316 A JP-A-2004-225271

However, in the case of the exterior wall structure as described in Patent Document 1, partition panels are provided on the outdoor side and the indoor side, respectively, so the distance between the pillar and the outer wall is narrow, and as described in Patent Document 2, There was a problem that construction such as covering the pillars with a fireproof covering material was difficult.

The present invention has been made in view of the above points, and aims to improve the fire resistance of the outer wall and the pillars on the indoor side of the outer wall, and to provide a fire-resistant structure that is easy to construct.

A fire-resistant structure according to the present invention is a fire-resistant structure including an outer wall and a pillar provided on the indoor side of the outer wall. The outer wall includes a plurality of vertically elongated steel frames arranged left and right at predetermined intervals, a face material having fire resistance provided on the outdoor side of the steel frames along the plurality of steel frames, and the and an exterior wall material provided on the outdoor side of the face material. The outer surface of the pillar, excluding the surface facing the space between the pillar and the face material, is coated with a fireproof coating material, and the fireproof coating material covers the space between the pillar and the face material. is provided. A fastener for fastening the outer wall material is fixed to the steel frame positioned in the space closed with the fireproof covering material. The outer surface of the column excluding the surface facing the space between the column and the face member provided on the outdoor side of the steel frame, and the space between the column and the face member provided on the outdoor side of the steel frame The refractory covering material is continuously and integrally provided so as to block. The face material includes a first face material that is rectangular in front view and is provided on the outdoor side of the steel frame, and a second face material that is rectangular in front view and is provided on the outdoor side of the first face material. and have. A heat insulating material is provided on the indoor side of the first panel with a gap from the first panel.

In the present invention, the fire resistance of the outer wall and the pillars on the indoor side of the outer wall can be improved, and the fire-resistant coating material can be easily applied.

It is a perspective view which shows an example of the outer wall structure in the fireproof structure of this embodiment. 2 is a plan view of the outer wall structure of FIG. 1; FIG. FIG. 2 is a cross-sectional view taken along line XX of the outer wall structure of FIG. 1; FIG. 2 is a front view showing an example of a construction process of the outer wall structure of FIG. 1; FIG. 2 is a front view showing an example of a construction process of the outer wall structure of FIG. 1; FIG. 2 is a front view showing an example of a construction process of the outer wall structure of FIG. 1; FIG. 2 is a front view showing an example of a construction process of the outer wall structure of FIG. 1; 8A is a front view showing an example of a fastener used in the outer wall structure of FIG. 1, and FIG. 8B is a cross-sectional view showing an example of an outer wall structure using the fastener of FIG. 8A. It is a front view which shows an example of the construction process of the modification of the exterior wall structure in the fireproof structure of this embodiment. FIG. 10 is a cross-sectional view of the outer wall structure shown in FIG. 9; It is sectional drawing which shows another modification of the outer wall structure in the fireproof structure of this embodiment. 12A and 12B are perspective views showing modifications of the metal auxiliary material used in the outer wall structure in the fireproof structure of this embodiment. It is sectional drawing which shows another modification of the outer wall structure in the fireproof structure of this embodiment. FIG. 14 is a perspective view showing an example of a support member used in the outer wall structure shown in FIG. 13; 15A to 15C show modifications of the support members used in the outer wall structure in the fireproof structure of this embodiment. 15A is a perspective view of the support member, FIG. 15B is a front view of the support member, and FIG. 15C is a bottom view. FIG. 16 is a cross-sectional view showing an outer wall structure using the supporting member shown in FIG. 15; It is a top view which shows the fireproof structure which concerns on this embodiment. Figure 18 is a perspective view of the fire resistant structure shown in Figure 17; 19A and 19B are plan views showing modifications of the fireproof structure according to this embodiment. It is a top view which shows an example of the fireproof structure which concerns on this embodiment in the external corner.

DETAILED DESCRIPTION OF THE INVENTION Embodiments for carrying out the present invention will be described below.

The fireproof structure according to this embodiment includes an outer wall 101 and pillars 100 provided on the indoor side of the outer wall 101 . The outer wall 101 is composed of a plurality of vertically long steel frames 1 arranged left and right at predetermined intervals, and a face material 4 having fire resistance provided on the outdoor side of the steel frames 1 along the plurality of steel frames 1. , and an exterior wall material 5 provided on the outdoor side of the face material 4 . The outer surface of the pillar 100 except for the surface facing the space 104 between the pillar 100 and the face material 4 is covered with a fireproof covering material 102, and the fireproof coating material 102 covers the space 104 between the pillar 100 and the face material 4. A covering 102 is provided.

In the fire-resistant structure of this embodiment, since no face material is provided on the indoor side of the steel frame 1, the space 104 between the pillar 100 and the outer wall 101 is large. Therefore, it is easy to apply the fireproof covering material 102 to the pillar 100 . Further, since the outer wall 101 includes the face material 4 and the outer wall material 5 having fire resistance, the fire resistance of the outer wall 101 can be ensured. Also, since the pillar 100 is surrounded by the fireproof covering material 102, the fire resistance of the pillar 100 can be ensured.

In this embodiment, the steel frame 1 is a lightweight steel frame, and the face material 4 is a first face material 2 that is rectangular in front view and provided on the outdoor side of the steel frame 1, and the outdoor side of the first face material 2. and a rectangular second face member 3 provided in the front view, the outer wall member 101 is rectangular in front view, and the two vertical sides 25 and 26 of the first face member 2 are the steel frame 1 The two vertical sides 35 and 36 of the second face plate 3 are on the outdoor side of the steel frame 1 different from the steel frame 1 on which the vertical sides 25 and 26 of the first face plate 2 are located. The two lateral sides 37, 38 of the second face material 3 and the two lateral sides 27, 28 of the first face material 2 are vertically displaced from each other. The two long sides 57, 58 do not overlap the two lateral sides 27, 28 of the first panel 2 and the two lateral sides 37, 38 of the second panel 3 in the thickness direction, and the fastener 6 is It may be fixed to the steel frame 1 via.

In this embodiment, the first face material 2 and the second face material 3 may be gypsum boards.

In this embodiment, at least the second face member 3 may be a calcium silicate plate.

In this embodiment, the outer wall 101 includes a first outer wall 107 forming an external corner and a second outer wall 108 adjacent to the first outer wall 107 in a direction intersecting the first outer wall 107. And the outer surface of the pillar 100 facing the second outer wall 108 and excluding the surface facing the space 104 between the pillar 100 and the facing material 4 of the first outer wall 107 and the facing material 4 of the second outer wall 108 The refractory cladding 102 is coated with the refractory cladding 102 so as to block the space 104 between the pillar 100 and the facing 4 of the first outer wall 107 and the facing 4 of the second outer wall 108. may be provided.

In this embodiment, a fireproof covering material holding means 106 is provided from the surface of the pillar 100 that is not opposed to the face material 4 and is positioned substantially vertically to the vicinity of the back surface of the face material 4, and the fireproof covering material A refractory coating 102 may be provided on the retaining means 106 .

In this embodiment, a heat insulating material 105 may be provided on the indoor side of the face material 4 .

The fireproof structure of this embodiment will be described in more detail below.

First, the structure of the outer wall 101 in the fireproof structure of this embodiment will be described.

The outer wall 101 includes a steel frame 1, a face member 4 provided on the outdoor side of the steel frame 1, and an outer wall member 5 provided on the outdoor side of the face member 4. - 特許庁Also, this face material 4 includes a first face material 2 and a second face material 3 . For this reason, in this embodiment, as shown in FIG. , an exterior wall material 5 is provided on the outdoor side of the second face material 3 .

The steel frame 1 is a long furring strip. The cross-sectional shape of the steel frame 1 may be, for example, a rectangular shape like a square pipe, or a C-shape. A cross section of the steel frame 1 means a cross section in a direction perpendicular to the longitudinal direction. The steel frame 1 may be formed from one furring strip, or one steel frame 1 may be formed by combining a plurality of furring strips. The steel frame 1 of this embodiment is a lightweight steel frame. Note that the steel frame 1 is not limited to a lightweight steel frame.

The first face member 2 and the second face member 3 are rectangular in front view. The first panel 2 and the second panel 3 are made of fire-resistant material. The first face material 2 and the second face material 3 of this embodiment are gypsum boards. This gypsum board includes, for example, a reinforced gypsum board defined in JIS A 6901. Furthermore, it is preferable that the gypsum of the core of the reinforced gypsum board is waterproofed with a water-repellent material or the like, so as to suppress deterioration in strength, durability, etc. of the reinforced gypsum board due to rainwater or humidity. is possible. In addition, the first face material 2 and the second face material 3 are not limited to the gypsum board, and may be made of a fire-resistant material. For example, the first face material 2 and the second face material 3 may be calcium silicate boards or cement boards. For example, both the first face member 2 and the second face member 3 may be calcium silicate plates. Since the calcium silicate board is thinner than the gypsum board, the outer wall 101 can be made thinner and the fire resistance of the calcium silicate board can ensure the fire resistance of the outer wall 101 . Alternatively, the first face material 2 may be a gypsum board, and the second face material 3 may be a calcium silicate board. In this case, the calcium silicate board has higher water resistance than the gypsum board. can be improved.

The thickness of the first face material 2 and the second face material 3 is selected according to the required fire resistance performance, and is within the range of 15-27 mm, for example. The sizes of the first face member 2 and the second face member 3 are not particularly limited.

It is preferable that the first face member 2 and the second face member 3 have the same size. That is, the vertical sides 25 and 26 of the first panel 2 and the vertical sides 35 and 36 of the second panel 3 have the same length, and the horizontal sides 27 and 28 of the first panel 2 and the second panel 3 have the same length. The lateral sides 37, 38 of the panel 3 are preferably of the same length.

The exterior wall material 5 is a rectangular ceramic siding when viewed from the front. The size and thickness of the ceramic siding are appropriately set, for example, the short side is in the range of 300-1000 mm, the long side is in the range of 1000-3600 mm, and the thickness is in the range of 12-40 mm.

Next, the construction structure of the steel frame 1, the first face member 2, the second face member 3, and the outer wall member 5 in the outer wall 101 of this embodiment will be described in detail.

In the outer wall 101 of this embodiment, the steel frame 1 is installed on the surface of the base material as a vertical furring strip that is vertically long, that is, vertically long. The steel frames 1 are arranged side by side in the left-right direction at predetermined intervals (see FIGS. 1 and 2). The intervals at which the steel frames 1 are installed are appropriately set, and may be equal intervals, for example.

In the outer wall 101 of this embodiment, as shown in FIGS. 1 to 4, a plurality of first face members 2 are provided vertically and horizontally adjacent to each other along a plurality of steel frames 1 arranged side by side.

In this embodiment, the two longitudinal sides 25, 26 of the first panel 2 are located on the steel frame 1 (see FIG. 2). In this specification, the steel frame 1 on which the vertical sides 25 and 26 of the first face member 2 are located is also referred to as the first steel frame 11 . When a plurality of first face members 2 are arranged side by side in the horizontal direction, the vertical sides 25 and 26 of all the first face members 2 are located on the steel frame 11 (see FIG. 2). The first face member 2 is fixed to the steel frame 1 by a fixing member. Examples of fixing members include screws, nails, and screws.

When a plurality of first face members 2 are adjacent to each other in the vertical direction, the horizontal sides of the first face members 2 face each other. A portion where the lateral sides of the first face member 2 are butted against each other is a butting portion 7 (see FIG. 4). That is, the lateral side 281 of the first face member 21 positioned on the upper side and the lateral side 272 of the first face member 22 positioned on the lower side face each other.

Moreover, when the several 1st surface material 2 adjoins the left-right direction, as for the 1st surface material 2, the vertical sides face each other. The portion where the vertical sides of the first face member 2 are butted against each other is the butted portion 8 (see FIG. 4). That is, the vertical side 263 of the first face member 23 positioned on the right side and the vertical side 254 of the first face member 24 positioned on the left side face each other.

In this embodiment, on the outdoor side of a plurality of first panel members 2, the second panel members 3 are provided adjacent to each other vertically and horizontally (see FIGS. 1 to 3 and FIG. 5). That is, the second face member 3 extends along the plurality of steel frames 1 lined up like the first face member 2 . In this embodiment, the two vertical sides 35, 36 of the second face plate 3 are positioned on a steel frame 1 different from the steel frame 1 (steel frame 11) on which the vertical sides 25, 26 of the first face plate 2 are positioned. (See Figures 1 and 2). In this specification, the steel frame 1 on which the vertical sides 35 and 36 of the second face member 3 are located is also referred to as the second steel frame 12 . When a plurality of second face members 3 are arranged side by side in the horizontal direction, the vertical sides 35 and 36 of all the second face members 3 are positioned on the second steel frame 12 (see FIG. 2). The second face member 3 is fixed to the steel frame 1 via the first face member 2 by a fixing member. Examples of fixing members include screws, nails, and screws.

When a plurality of second face members 3 are adjacent to each other in the vertical direction, the horizontal sides of the second face members 3 face each other. A portion where the lateral sides of the second face member 3 are butted against each other is a butting portion 9 (see FIG. 5). That is, the lateral side 381 of the second face member 31 positioned above and the lateral side 372 of the second face member 32 positioned below face each other.

When a plurality of second face members 3 are adjacent to each other in the left-right direction, the vertical sides of the second face members 3 face each other. The portion where the vertical sides of the second face member 3 are butted against each other is the butted portion 10 (see FIG. 5). That is, the vertical side 363 of the second face member 33 positioned on the right side and the vertical side 354 of the second face member 34 positioned on the left side face each other.

In the outer wall 101 of the present embodiment, as shown in FIG. 5, the first face member 2 and the second face member 3 are installed so that the vertical sides and the horizontal sides are oriented in the same direction. Furthermore, the two lateral sides 37 and 38 of the second face member 3 and the two lateral sides 27 and 28 of the first face member 2 are vertically shifted (see FIGS. 3 and 5). ). That is, the closest horizontal sides of the first face member 2 and the second face member 3 do not overlap each other in the thickness direction and are separated in the vertical direction. When a plurality of second face members 3 are adjacent to each other in the vertical direction, the most adjacent lateral sides of the second face member 3 and the lateral sides of the first face member 2 are aligned with each other. The abutting portion 7 of is shifted in the vertical direction. The abutting portion 9 between the lateral sides of the second face member 3 and the abutting portion 7 between the lateral sides of the first face member 2 do not overlap in the thickness direction. Even if the material 3 shrinks and a gap is formed in the butted portion 9 between the horizontal sides of the second face material 3, on the back side of the butted portion 9 between the horizontal sides of the second face material 3 Since the 1st face material 2 exists, fireproof performance becomes difficult to fall.

The vertical distance between the closest lateral sides of the first face member 2 and the second face member 3 is appropriately set. For example, if the lengths of the vertical sides of the first face material 2 and the second face material 3 are the same, the vertical direction of the closest horizontal sides of the first face material 2 and the second face material 3 can be half the length of the longitudinal sides 25 , 26 of the first panel 2 . In the present embodiment, the distance between the butted portion 9 between the horizontal sides of the second face member 3 and the butted portion 7 between the horizontal sides of the first face member 2 is the vertical side 25 of the first face member 2. , 26 is about half as long. In this case, the butted portions 7 and 9 between the lateral sides of the first and second face members 2 and 3 are present at equal intervals, so the butted portions 15 and 15 between the long sides of the exterior wall material 5 It becomes easy to select the size of the outer wall material 5 and to arrange the outer wall material 5 so that the butted portions 7 and 9 of the lateral sides of the first face material 2 and the second face material 3 do not overlap.

In this embodiment, a plurality of vertically elongated joiners 14 are provided on the outdoor surface of the second panel 3 (see FIG. 6). The joiner 14 overlaps a portion (butting portion 16) where the vertical sides of the plurality of exterior wall members 5 provided on the outdoor side of the second face member 3 face each other on the outdoor side of the second face member 3. It is arranged in a predetermined position (see FIG. 7). The joiner 14 is fixed to the steel frame 1 via the second face member 3 and the first face member 2 . As the joiner 14, for example, a joiner having a hat-shaped cross section as shown in FIG. 2 can be used.

In the present embodiment, a plurality of fasteners 6 are further provided on the outdoor surface of the second panel 3 (see FIG. 6). The fastener 6 overlaps a portion (matching portion 15) where the horizontal sides of the plurality of exterior wall materials 5 provided on the outdoor side of the second panel 3 are butted against each other on the outdoor side of the second panel 3. It is arranged in a predetermined position (see FIG. 7). The fastener 6 is fixed to the steel frame 1 by a fixing member via the second face member 3 and the first face member 2 . Examples of fixing members include screws, nails, and screws, and a plurality of types may be used together.

For example, as shown in FIGS. 8A and 8B , the fastener 6 of the present embodiment includes a fixing portion 61 for fixing in contact with the second face member 3, and a fixing portion 61 for holding the second outer wall member 5. A holding portion 62 and a projecting piece 63 are provided.

In the fixing portion 61, when the fastener 6 is installed on the outdoor surface of the second face member 3, the upper end is an upper end 61a and the lower end is a lower end 61b (Fig. 8A reference). The fixing portion 61 is provided with a fixing hole 610 for inserting a fixing member. In this embodiment, the fixing portion 61 is provided with a plurality of fixing holes 610 .

The holding portion 62 is composed of a first piece 621, a second piece 622 and a third piece 623 (see FIG. 8B). The first piece 621 is provided so as to protrude forward from substantially the center of the fixing portion 61 in the vertical direction. The second piece 622 is provided so as to protrude from the front end of the first piece 621 toward the upper end portion 61a side of the fixing portion 61 . The second piece 622 supports the outer wall material 5 attached to the outdoor side of the upper end 61a. The second piece 622 of the present embodiment is provided continuously over substantially the entire length in the left-right direction of the first piece 621 without being divided, but may be provided by being divided. The front end of the first piece 621 is provided with a third piece 623 projecting toward the lower end portion 61b side of the fixed portion 61 (see FIG. 8A). This third piece 623 supports the outer wall material 5 attached to the outdoor side of the lower end portion 61b (see FIG. 8B). Although the third piece 623 of the present embodiment is provided by being divided into two, it may be provided continuously. The vertical direction and the horizontal direction of the fastener 6 mean the vertical direction and the horizontal direction of the fastener 6 in the front view of the fireproof structure when the fastener 6 is used.

The protruding pieces 63 are provided so as to protrude forward from both left and right ends of the fixed portion 61 so as to have a length shorter than the protruding length of the first piece 621 (see FIG. 8B). A ventilation space can be formed between the outer wall material 5 and the second face material 3 by the projecting piece 63 . As shown in FIG. 8A, the projecting piece 63 may have an inward piece 631 and an outward piece 632 projecting left and right from the front end.

The inward piece 631 is provided extending from the front end of the projecting piece 63 to the inside of the fixing portion 61 and substantially parallel to the fixing portion 61 (see FIG. 8A). The inward piece 631 of the projecting piece 63 is provided closer to the lower end portion 61b of the fixing portion 61 than the first piece 621 is. supports the first piece 621 in contact with the lower surface of the . By supporting the first piece 621 with the inward piece 631 substantially perpendicular to the first piece 621 in this manner, the first piece 621 is less likely to deform. The outward piece 632 is provided extending from the front end of the projecting piece 63 to the outside of the fixed portion 61 and substantially parallel to the fixed portion 61 . Deformation of the projecting piece 63 can be further suppressed by the outward piece 632 .

The fastener 6 having the above configuration can be obtained, for example, by appropriately cutting or bending a metal plate such as a steel plate. For example, the first piece 621 , the second piece 622 , the third piece 623 , the protruding piece 63 , the inward piece 631 and the outward piece 632 can be formed by cutting and raising part of the fixed portion 61 .

In the present embodiment, the length in the up-down direction and the length in the left-right direction of the fastener 6 are substantially the same, but the present invention is not limited to this. The length of the fastener 6 in the left-right direction is appropriately set, but it is preferably substantially the same as the length of the two long sides 57 and 58 of the exterior wall material 5 . Approximately the same does not have to be the same in a strict sense, and includes the meaning that it may be slightly shorter. The fasteners 6 may be shorter than the long sides 57, 58 of the siding 5 so as not to overlap the joiner 14, for example. If the fasteners 6 are elongated in the left-right direction, the construction of the fasteners 6 is facilitated, and the external wall material 5 is more easily supported by the fasteners 6 . When the fastener 6 is long, the fixing holes 610 may be appropriately provided according to the arrangement interval of the steel frame 1 .

In this embodiment, as shown in FIG. 6, six fasteners 6 are provided on the outdoor side surface of the second panel 3 . The number of fasteners 6 is not limited to this, and is appropriately set according to the shape of fasteners 6 and the like. For example, a plurality of fasteners 6 whose lateral length is shorter than half the length of the long side of the exterior wall material 5 may be provided on the surface of the second panel 3 facing the outside.

Moreover, as shown in FIG. 6, it is preferable that a moisture-permeable waterproof sheet 40 is provided on the surface of the second face member 3 facing the outdoors. In this case, the joiner 14 and the fastener 6 are fixed to the second face member 3 via the moisture-permeable waterproof sheet 40 . The moisture-permeable waterproof sheet 40 has a property of preventing the infiltration of moisture and permeating moisture (water vapor). Moisture-permeable waterproof sheet 40 releases moisture to the surface side, making it easier to suppress the occurrence of dew condensation within the fireproof structure. In addition, even if water such as rainwater enters from the outer wall material 5, the water can be easily prevented from entering the second face material 3 side. The moisture-permeable waterproof sheet 4 may be provided over the entire surface of the second face member 3 .

In this embodiment, a plurality of exterior wall materials 5 are provided adjacent to each other vertically and horizontally on the outdoor side of the plurality of second surface materials 3 (see FIGS. 1 to 3 and 7). That is, the exterior wall material 5 extends along the plurality of steel frames 1 lined up, like the first face material 2 and the second face material 3 . The outer wall material 5 is arranged so that the vertical side is the short side and the horizontal side is the long side.

The exterior wall material 5 is installed via the fastener 6 provided on the outdoor surface of the second panel 3 and the joiner 14 (see FIGS. 2 and 7). Two short sides 55, 56 of the exterior wall material 5 are positioned on the steel frame 1 (see FIG. 2). The steel frame 1 to which the exterior wall material 5 is fixed may be the same as or different from the first steel frame 11 or the second steel frame 12 . When a plurality of exterior wall materials 5 are adjacent to each other in the vertical and horizontal directions, the short sides 55 and 56 of all the exterior wall materials 5 are in contact with the joiner 14 and positioned on the steel frame 1 . The exterior wall material 5 is fixed to the steel frame 1 by fasteners 6 via the first face material 2 and the second face material 3 .

When a plurality of exterior wall materials 5 are adjacent to each other in the vertical direction, the lateral sides of the exterior wall materials 5 are butted against each other via fasteners 6 . The portion where the long sides of the outer wall material 5 are butted against each other is the butted portion 15 (see FIG. 7). That is, the horizontal edge 581 of the outer wall material 51 positioned on the upper side and the horizontal edge 572 of the outer wall material 52 positioned on the lower side face each other via the fastener 6 .

When a plurality of exterior wall materials 5 are adjacent to each other in the left-right direction, vertical sides of the exterior wall materials 5 face each other via joiners 14 (see FIG. 7). A butted portion 16 is a portion where the short sides of the outer wall material 5 are butted against each other. That is, the short side 563 of the exterior wall member 53 located on the right side and the right short side 554 of the exterior wall member 54 located on the left side face each other. A sealing material 17 is preferably filled in the butted portion 16 between the short sides of the outer wall material 5 in order to close the gap. Examples of the sealing material 17 include silicon-based resin.

The two long sides 57, 58 of the exterior wall material 5 are arranged so as not to overlap the two lateral sides 27, 28 of the first panel 2 and the two lateral sides 37, 38 of the second panel 3 in the thickness direction. (see FIG. 3). The positions of the two short sides 55 and 56 of the exterior wall material 5 are aligned with the two vertical sides 25 and 26 of the first panel 2 and the two vertical sides 35 and 36 of the second panel 3 in the thickness direction. They may or may not match.

When a plurality of exterior wall materials 5 are adjacent to each other in the vertical direction, a butted portion 15 between the long sides of the exterior wall materials 5, a butted portion 7 between the horizontal sides of the first face member 2, and the second face member 3 do not overlap with the abutting portion 9 between the lateral sides of (see FIG. 7). As a result, even if the outer wall material 5 shrinks in the event of a fire and a gap is formed in the butted portions 15 of the long sides of the outer wall material 5, the butted portions 15 of the long sides of the outer wall material 5 will not close. Since the second face material 3 exists on the back side, the fire resistance is less likely to deteriorate.

The length of the vertical sides of the first face member 2 and the second face member 3 is preferably twice the length of the short side of the exterior wall member 5 . In addition, it is preferable that the horizontal sides of the second panel 3 and the horizontal sides of the first panel 2 are shifted in the vertical direction by the same length as the short sides of the exterior wall materials 5 . . The same length does not have to be the same in a strict sense, and includes the meaning of being substantially the same. As a result, the butted portion 15 between the long sides of the exterior wall material 5, the butted portion 7 between the lateral sides of the first face member 2, and the butted portion 9 between the lateral sides of the second face member 3 overlap each other. It is easy to arrange so that it does not become.

More preferably, the two long sides of the exterior wall material 5 are positioned substantially in the center between the lateral sides of the first face material 2 and the lateral sides of the second face material 3 in the vertical direction. Strictly speaking, the term "approximately in the center" includes the meaning that it does not have to be in the center (middle) and may be slightly shifted up and down. For example, as the first face material 2 and the second face material 3, when using a slab plate (size 3 shaku × 6 shaku, 910 × 1820 mm), each is provided in the horizontal direction, and the vertical side is vertically They can be placed off by 1/2 of the dimension, or 1.5 feet. Then, using the outer wall material 5 having a size of 1.5 shaku × 10 shaku (455 × 3030 mm), it is provided in the horizontally long direction, and the long side of the outer wall material 5 is the horizontal side of the first face material 2 and the second 2 can be positioned substantially in the center between the lateral sides of the face member 3 and the vertical direction. In this case, the lateral sides of the first face material 2, the lateral sides of the second face material 3, and the long sides of the exterior wall material 5 are likely to be arranged so as not to overlap in the thickness direction. The lateral side of the face material 2, the lateral side of the second face material 3, and the long side of the exterior wall material 5 are arranged apart from each other by about 0.75 shaku.

In this embodiment, the size of the first face member 2 and the second face member 3 are the same, and the directions of the long sides and the short sides of the first face member 2 and the second face member 3 are the same. is. As a result, the horizontal sides of the first panel 2, the horizontal sides of the second panel 3, and the long sides of the exterior wall 5 do not overlap in the thickness direction. In addition, the size and direction of the first face member 2 and the second face member 3 may be different. For example, both the first face member 2 and the second face member 3 may be arranged such that the vertical side is the long side and the horizontal side is the short side. Alternatively, one of the first face material 2 and the second face material 3 has a long side and a short side (that is, construction in the landscape direction), and the other vertical side is a short side and a horizontal side. It may be arranged so that the side becomes the long side (that is, construction in the longitudinal direction).

Further, as shown in FIGS. 9 and 10, a metal tape 18 is provided at the abutment portion 7 where the lateral side 281 of the first face member 21 and the lateral side 272 of the first face member 22 are butted against each other. may The metal tape 18 is provided so as to extend over the lateral side 281 of the first face member 21 and the lateral side 272 of the first face member 22 so as to cover the butted portion 7 between the lateral sides. preferable. It is preferable that the metal tape 18 is provided over substantially the entire length of the lateral sides 281 and 272 of the first face members 21 and 22 at the butted portion 7 of the lateral sides. The metal tape 18 is preferably provided over substantially the entire length of the outer wall 101 in the left-right direction. Strictly speaking, the substantially full length does not have to be the full length, and includes the meaning that it may be slightly longer or shorter. The width of the metal tape 18 is not particularly limited as long as it can cover the butted portion 7 .

Examples of materials for the metal tape 18 include aluminum and steel. Aluminum tape is preferred as the metal tape 18 . Among metals, aluminum has a relatively high thermal emissivity, so that heat is less likely to be conducted from the butted portion 7 to the first face member 2 and the second face member 3 in the event of a fire. Aluminum is also preferable among metals because it is relatively inexpensive. Even if the first face material 2 shrinks in the event of a fire and a gap is formed in the abutted portion 7 of the horizontal sides, the gap is covered with the metal tape 18, so the fire resistance is improved. becomes less likely to decrease. A metal tape 18 may also be provided at the butted portion 8 between the vertical sides of the first face member 2 . In this case, the fire resistance can be further improved. Note that the metal tape 18 may not be provided at the abutting portion 8 between the vertical sides of the first face member 2 because the steel frame 1 exists on the back side.

Since the fire resistance of the outer wall 101 is improved by providing the metal tape 18 at the butted portion 7, even if the thickness of the first face material 2 and the second face material 3 is, for example, 15 mm good. Even in this case, sufficient fire resistance can be ensured. Furthermore, when the thickness of the first face material 2 and the second face material 3 is 15 mm, it is lighter than a face material such as a gypsum board having a thickness greater than 15 mm. The face material 3 of 2 can be constructed easily.

The outer wall 101 of this embodiment is not limited to the structure described above. For example, on the surfaces of the second face members 31 and 32 adjacent to each other with the lateral sides 381 and 372 facing each other, in a substantially horizontal direction, that is, substantially parallel to the lateral sides 381 and 372 of the second face members 31 and 32, A metal auxiliary member 19 may be provided (see FIG. 11). The term "substantially horizontal" does not have to be horizontal in a strict sense, and includes the meaning that it may be slightly inclined. The metal auxiliary member 19 may be provided on the second face member 3 via the moisture-permeable waterproof sheet 4 .

The metal auxiliary member 19 has at least a fixing portion 191 . The fixing portion 191 is a portion for fixing the metal auxiliary member 19 itself to the second face member 3 . A fixing hole 190 for inserting a fixing member may be appropriately provided in the fixing portion 191 . The second face member 3 can be pressed from the surface side by the metal auxiliary member 19 . By providing the metal auxiliary material 19 on the surface of the second face material 3, the second face material 3 can be pressed from the surface side, so that the second face material 3 may fall off due to shrinkage during high heat. Warpage is easily suppressed, and the fire resistance of the steel-framed outer wall fire-resistant structure is further improved. The location where the metal auxiliary member 19 is provided is appropriately selected, and may be, for example, the vicinity of the abutting portion 9 between the horizontal sides of the surfaces of the second face members 31 and 32 . Since the abutting portion 9 between the horizontal sides of the second face member 3 may shrink or warp when the heat is intense, the auxiliary metal member 19 prevents the second face member 3 from coming off. be able to. The size of the fixing portion 191 is appropriately set according to the size of the second face member 3 and the outer wall member 5 and the like.

As shown in FIGS. 12A and 12B, the metal auxiliary member 19 preferably has a fixing portion 191 and a protruding portion 192 . The projecting portion 192 has a shape projecting forward from the fixing portion 191 . The strength of the metallic auxiliary member 19 can be improved by the protruding portion 192, and by using such metallic auxiliary member 19, the second surface member 3 can be pressed more firmly. The projection height L of the projecting portion 192 from the fixed portion 191 is equal to or less than the length between the second face member 3 and the outer wall member 5, and may be the same or shorter. When the projection height L of the protrusion 192 from the fixed part 191 is the same as the length between the second face member 3 and the outer wall material 5, the forwardmost front end 193 of the protrusion 192 is the outer wall member. contact with 5. In this case, in addition to the effect of improving the strength of the metal auxiliary member 19, the protruding portion 192 can also hold the outer wall member 5 against force in the thickness direction of the outer wall member 5, such as wind pressure. The cross-sectional shape of the protruding portion 192 of the metal auxiliary member 19 is appropriately selected, and is, for example, a C-shape with corners or an L-shape.

This metallic auxiliary member 19 will be described with reference to FIGS. 12A and 12B, but the shape of the metallic auxiliary member 19 is not limited to the shape shown in FIGS. 12A and 12B. For example, the metal auxiliary member 19 may be formed only from the fixing portion 191 and may have a flat plate shape. Further, as shown in FIGS. 12A and 12B, the metal auxiliary material 19 may include a protrusion 192 at the lower end of the fixing portion 191, or may include the protrusion 192 at the upper end of the fixing portion 191. A projecting portion 192 may be provided in the middle of the fixing portion 191 in the vertical direction. The vertical direction and the horizontal direction of the metallic auxiliary member 19 mean the vertical direction and the horizontal direction of the metallic auxiliary member 19 in the front view of the fireproof structure when the metallic auxiliary member 19 is used.

The metal auxiliary member 19 in FIG. 12A will be described. The projecting portion 192 is composed of a first piece 195 and a second piece 196 . The first piece 195 is provided so as to protrude forward from the lower end of the fixed portion 191 . The angle between the fixing portion 191 and the first piece 195 may be larger than 90 degrees and smaller than 180 degrees, and is appropriately selected. The second piece 196 protrudes rearward from the front end of the first piece 195 . The angle between the first piece 195 and the second piece 196 may be less than 180 degrees and is selected accordingly. A rear end of the second piece 196 exists on an extension line of the fixing portion 191 . That is, the rear end of the second piece 196 contacts the second face member 3 . 12A, the cross-sectional shape of the projecting portion 192 of the metal auxiliary member 19 is L-shaped, and the upper side 197, which is the joint between the first piece 195 and the second piece 196, is the front end portion 193 of the metal auxiliary member 19. is. In FIG. 12A , the upper edge 197 is in contact with the back surface of the exterior wall material 5 . The metal support 19 may have an outward piece 194 extending parallel to the fixed portion 191 from the rear end of the second piece 196 . Deformation of the second piece 196 is easily suppressed by the outward piece 194 .

Next, the metal auxiliary member 19 of FIG. 12B will be described. The protrusion 192 is composed of a first piece 198 , a second piece 199 and a third piece 200 . The first piece 198 is provided to protrude forward from the lower end of the fixed portion 191 substantially perpendicularly. The second piece 199 protrudes downward from the front end of the first piece 198 substantially parallel to the fixing portion 191 . The third piece 200 protrudes rearward substantially vertically from the lower end of the second piece 199 . A rear end of the third piece 200 exists on an extension line of the fixing portion 191 . That is, the rear end of the third piece 200 contacts the second face member 3 . 12B, the cross-sectional shape of the projecting portion 192 of the metal support member 19 is C-shaped, and the second piece 199 is the front end portion 193 of the metal support member 19. In FIG. 12B, the lengths of the first piece 198 and the third piece 200 are the same as the projection length L of the projecting portion 192, and the second piece 199 is in contact with the back surface of the exterior wall material 5. In FIG. The metal auxiliary material 19 can be obtained by appropriately cutting or bending a metal plate such as a steel plate.

The metal auxiliary material 19 is preferably provided over the entire horizontal length of the fireproof structure of this embodiment. As a result, the second face member 3 can be firmly pressed from the surface side. Moreover, it is preferable that the metal auxiliary member 19 is provided across a plurality of second surface members 3 adjacent to each other in the left-right direction. Since the metallic auxiliary material 19 is provided over the plurality of second surface materials 3, the metallic auxiliary material 19 stably presses the plurality of second surface materials 3 from the surface side. Therefore, it becomes easier to prevent the second face member 3 from coming off.

Although the length of the metal auxiliary member 19 in the left-right direction is appropriately set, the metal auxiliary member 19 is preferably long as shown in FIGS. 12A and 12B. When the long side of the outer wall material 5 is longer than the second face material 3, the length of the metal auxiliary member 19 in the left-right direction is preferably longer than the horizontal sides 37, 38 of the second face material 3. More preferably, the length is the same as the long sides 57 and 58 of the material 5 . Being the same does not have to be the same in a strict sense, it may be somewhat shorter, and includes the meaning of being substantially the same. For example, in this embodiment, since the exterior wall material 5 is constructed through the joiner 14, the metal auxiliary material 19 is shorter than the long sides 57 and 58 of the exterior wall material 5 so as not to overlap the joiner 14. good. In addition, as the metal auxiliary members 19, a plurality of members whose left and right lengths are shorter than half the length of the long side of the outer wall member 5 may be arranged.

The metallic auxiliary material 19 is preferably the fastener 6 . That the metal auxiliary member 19 is the fastener 6 means that the metal auxiliary member 19 has the function of the fastener 6 , that is, the function of locking and fixing the outer wall member 5 . It is preferable that the fastener 6 and the metal auxiliary member 19 are integrated. That is, it is preferable to use the support member 20 having both functions of the fastener 6 and the metal auxiliary member 19 . FIG. 13 shows an example of a wall fire-resistant structure using a support member 20, and FIG. 14 shows an example of the support member 20. As shown in FIG. The support member 20 includes a fixing portion 201 for fixing the support member 20 itself to the second face member 3, and a first holding portion 202 and a second holding portion 203 for holding the outer wall member 5. . The first holding portion 202 and the second holding portion 203 have shapes protruding forward from the fixed portion 201 . A protrusion height L of the second holding portion 203 from the fixed portion 201 is substantially the same as the length between the second face member 3 and the outer wall member 5 . Thereby, a ventilation space can be formed between the outer wall material 5 and the second face material 3 .

In the support member 20 , the first holding part 202 and the second holding part 203 play the role of the fastener 6 , and the fixing part 201 plays the role of the metal auxiliary material 19 . That is, the first holding portion 202 of the support member 20 locks and fixes the outer wall material 5, the second holding portion 203 forms a ventilation space, and the fixing portion 201 presses the second face member 3 from the surface side. be able to. The sizes of the fixing portion 201, the first holding portion 202, and the second holding portion 203 are appropriately set according to the size and weight of the second face member 3 and the outer wall member 5, and the like. When the support member 20 is used, the end portion of the fixing portion 201 on the side of the upper outer wall member 5 is defined as an upper end portion 201a, and the end portion of the lower outer wall member 5 side is defined as a lower end portion 201b.

This support member 20 will be described with reference to FIG. 14, but the shape of the support member 20 is not limited to the shape shown in FIG. The support member 20 includes a first holding portion 202 at the lower end of the fixing portion 201 and a second holding portion 203 at the upper end of the fixing portion 201, as shown in FIG. Alternatively, the upper end of the fixing portion 201 may be provided with the first holding portion 202 and the lower end of the fixing portion 201 may be provided with the second holding portion 203 . Alternatively, the first holding portion 202 may be provided in the middle of the fixing portion 201 in the vertical direction, and the second holding portion 203 may be provided at the upper end or the lower end of the fixing portion 201 .

A fixing hole 210 for inserting a fixing member is appropriately provided in the fixing portion 201 . The first holding portion 202 is composed of a first piece 221 , a second piece 222 , a third piece 223 , a fourth piece 224 , a fifth piece 225 and a sixth piece 226 . The sixth piece 226 is provided so as to protrude forward from the lower end portion 201b of the fixing portion 201 . The fifth piece 225 protrudes downward from the front end of the sixth piece 226 . The fourth piece 224 protrudes upward from the lower end of the fifth piece 225 and is provided parallel to the surface of the fifth piece 225 . The first piece 221 is provided so as to protrude forward from the upper end of the fourth piece 224 . The second piece 222 protrudes from the front end of the first piece 221 toward the upper end portion 201a side of the fixed portion 201, and supports the upper outer wall material 5 attached to the front side of the upper end portion 201a (see FIG. 13). . In FIG. 14, the second piece 222 is provided continuously over substantially the entire length in the left-right direction of the first piece 221 without being divided. The third piece 223 protrudes downward from the front end of the first piece 221 and supports the lower outer wall material 5 attached to the front side of the fourth piece 224 . In FIG. 14, the third piece 223 is divided into a plurality of pieces. It should be noted that the second piece 222 may be divided and provided in the same manner as the third piece 223 . Also, the third piece 223 may be provided continuously like the second piece 222 . The fourth piece 224 is in contact with the back surface of the lower exterior wall material 5 when the support member 20 is in use, and supports the lower exterior wall material 5 together with the third piece 223 (see FIG. 13). In addition, the rear end of the first piece 221 may be connected to the lower end portion 201b of the fixed portion 201, and the first piece 221 and the sixth piece 226 are continuously integrated to form a single flat plate. A fourth piece 224 may protrude from the bottom surface. The fourth piece 224 and the fifth piece 225 may also be a single flat plate.

14, the second holding portion 203 is composed of a first piece 231, a second piece 232 and a third piece 233. As shown in FIG. The first piece 231 of the second holding portion 203 is extended from the upper end of the fixing portion 201 so as to have a length shorter than the combined projection length of the first piece 221 and the sixth piece 226 of the first holding portion 202 . It protrudes forward. The first piece 231 of the second holding portion 203 can have substantially the same projection length as the sixth piece 226 of the first holding portion 202 . That is, the first piece 231 is provided so as to protrude forward from the upper end portion 201 a of the fixed portion 201 . The second piece 232 protrudes upward from the front end of the first piece 231 . The third piece 233 protrudes rearward from the upper end of the second piece 232 . In FIG. 14 , the lengths of the first piece 231 and the third piece 233 are the same as the projection length L of the second holding portion 203 . The second piece 232 is in contact with the back surface of the exterior wall material 5 , forming a ventilation space between the exterior wall material 5 and the second surface material 3 . can be supported (see Figure 13). The support member 20 may have an outward piece 234 extending parallel to the fixed portion 201 from the rear end of the third piece 233 . Deformation of the third piece 233 is easily suppressed by the outward piece 234 .

The support member 20 can be obtained by appropriately cutting or bending a metal plate such as a steel plate. In FIG. 14, for example, in the first holding portion 202, the sixth piece 226 can be formed by bending the fixing portion 201, the fifth piece 225 can be formed by bending the sixth piece 226, and the The fourth piece 224 can be formed by bending the fifth piece 225 , the first piece 221 can be formed by bending the fourth piece 224 , and the second piece 222 and the third piece 223 can be formed by bending the first piece 221 . can be formed by cutting and raising a part of Further, in the second holding portion 203, the first piece 231, the second piece 232, and the third piece 233 can be formed by bending a portion of the fixing portion 201. As shown in FIG. By using the support member 20 in which the fastener 6 and the metal auxiliary member 19 are integrated, construction becomes easy, and one member can obtain the functions of both the fastener 6 and the metal auxiliary member 19. Since it can be done, it is more efficient and preferable. The shape and size of the support member 20 are appropriately selected.

Although the length of the support member 20 in the left-right direction is appropriately set, it is preferable that the support member 20 is long as shown in FIG. When the long side of the exterior wall material 5 is longer than the second surface material 3 , the lateral length of the support member 20 is preferably longer than the lateral sides 37 and 38 of the second surface material 3 . It is more preferable that the lengths of the long sides 57 and 58 of . Approximately the same does not have to be the same in a strict sense, and includes the meaning that it may be slightly shorter. For example, the support member 20 may be shorter than the long sides 57, 58 of the siding 5 so as not to overlap the joiner 14. Thereby, the second face member 3 can be more stably pressed from the surface side. As the supporting members 20, a plurality of supporting members 20 whose left and right lengths are shorter than half the length of the long side of the outer wall member 5 may be arranged.

Also, the shape of the support member 20 is not limited to the above. For example, support member 20 may have a shape such as the variations of support member 20 shown in FIGS. 15A, 15B, and 15C.

The support member 20 has a first holding portion 202 at the lower end of the fixing portion 201 and a second holding portion 203 at the upper end of the fixing portion 201 (see FIG. 15A).

A fixing hole 210 for inserting a fixing member is appropriately provided in the fixing portion 201 (see FIGS. 15A and 15B).

The first holding part 202 is composed of a first piece 221, a second piece 222, a third piece 223, a fourth piece 224, and a sixth piece 226, as shown in FIG. 15A.

The sixth piece 226 protrudes forward from the lower end portion 201b of the fixed portion 201 . A plurality of ventilation holes 212 are provided in the sixth piece 226 (see FIGS. 15A and 15C). The shape of the vent 212 is, for example, oval.

The fourth piece 224 protrudes upward from the front end of the sixth piece 226 .

The first piece 221 protrudes forward from the upper end of the fourth piece 224 .

The second piece 222 protrudes obliquely upward from the front end of the first piece 221 .

The third piece 223 protrudes forward from the front end of the first piece 221 and its front end is bent downward.

In this support member 20, the second pieces 222 and the third pieces 223 are arranged alternately at the front end of the first piece 221 (see FIGS. 15A, 15B, and 15C). That is, third pieces 223 are provided on both sides of the second piece 222 at the front end of the first piece 221 .

The second holding part 203 is composed of a first piece 231, a second piece 232 and a third piece 233, as shown in FIG. 15A.

The first piece 231 protrudes forward from the upper end portion 201a of the fixing portion 201. The projection length of the first piece 231 is substantially the same as the projection length of the sixth piece 226 of the first holding portion 202. . . A plurality of ventilation holes 212 are provided in the first piece 231 (see FIG. 15A). The shape of this vent 212 is, for example, oval.

The second piece 232 protrudes upward from the front end of the first piece 231 .

The third piece 233 protrudes rearward from the upper end of the second piece 232 . The projection length of the third piece 233 is shorter than the projection length of the first piece 231 .

Next, an example of the structure of the outer wall 101 on which the support members 20 shown in FIG. 15 are installed will be described with reference to FIG. 16. FIG.

As shown in FIG. 16, a fixing member such as a screw is passed through the fixing hole 210 of the fixing portion 201 and penetrates the moisture permeable waterproof sheet 4, the second face member 3, and the first face member 2. , the support member 20 is fixed on the second face member 3 by inserting it up to the steel frame 1 .

The second piece 222 of the first holding part 202 supports the upper outer wall material 5 (see FIG. 16).

The bent portion of the third piece 223 of the first holding portion 202 and the fourth piece 224 of the first holding portion 202 sandwich and hold the outer wall material 5 (see FIG. 16).

The second piece 232 of the second holding portion 203 is in contact with the back surface of the upper exterior wall member 5 , and the second piece 232 is connected to the fixing portion 201 via the first piece 231 . Also, the fourth piece 224 of the second holding portion 202 is in contact with the back surface of the outer wall material 5 below, and the fourth piece 224 is connected to the fixing portion 201 via the sixth piece 226 . For this reason, ventilation spaces are formed between the upper and lower outer walls 5 and the second face member 3, as shown in FIG.

Further, the sixth piece 226 of the first holding portion 202 is provided with a ventilation hole 212 , and the first piece 231 of the second holding portion 203 is provided with a ventilation hole 211 . Vent 212 and vent 211 allow air to pass through. Further, since the projection length of the third piece 233 of the second holding portion 203 is shorter than the projection length of the first piece 231, the flow of air passing through the ventilation hole 211 provided in the first piece 231 is blocked. hard to get Therefore, in the outer wall 101 shown in FIG. 16, by installing the support member 20 shown in FIG. can.

The fireproof structure of this embodiment will be described in detail below with reference to FIGS. 17 and 18. FIG.

In the fireproof structure of this embodiment, the pillars 100 are provided on the indoor side of the outer wall 101 . Specifically, a pillar 100 is provided on the indoor side of the panel 4 . More specifically, a pillar 100 is provided on the indoor side of the first face member 2 and the steel frame 1 in the face member 4 . That is, in the fireproof structure of the present embodiment, there is a gap between the pillar 100 and the first face member 2 . A pillar 100 is a structural member of a building and a vertically elongated member. Although the material and cross-sectional shape of the pillar 100 are not particularly limited, for example, it is made of metal and has a square cross-section. The pillar 100 of this embodiment is a rectangular copper tube. The pillar 100 is not limited to a rectangular copper pipe, and may be, for example, a known steel material such as C-shaped steel or H-shaped steel.

In the fireproof structure of this embodiment, two vertically elongated lining materials 103 are provided on the indoor surface of the first panel 2 . In this embodiment, two lining materials 103 are provided on the indoor side surface of the first panel 2 at a portion facing the pillar 100 . The lining material 103 has, for example, a rectangular cross section. The lining material 103 is preferably made of a heat-resistant material, such as a rock wool plate. The backing material 103 is fixed to the first face member 2 by a fixing member. Fixing members include, for example, adhesives, screws, nails, and screws. In the fireproof structure of this embodiment, a steel frame 1 is provided between two lining materials 103 . In this embodiment, the case of using a lining material will be described, but the lining material may be used as necessary.

In the fireproof structure of this embodiment, from the surface of the pillar 100 that does not face the first face member 2 and is positioned substantially perpendicularly to the vicinity of the back surface of the first face member 2, the fireproof covering material is retained. Means 106 are provided. Specifically, a refractory coating retaining means 106 is provided from one lining 103 to the column 100 and a refractory coating retaining means 106 is provided from the other lining 103 to the column 100 . In this embodiment, since the refractory coating material holding means 106 is fixed to the backing material 103 provided on the back surface of the first face material 2, the fireproof coating material holding means 106 is attached to the back surface of the first face material 2. not reached. That is, the refractory coating material holding means 106 can be provided without being directly fixed to the back surface of the first panel 2 . The refractory coating material holding means 106 is, for example, a mesh member made of metal. As the refractory coating material holding means 106, for example, known members such as wire laths and expanded metals can be used. In this embodiment, the refractory coating material holding means 106 is fixed to the backing material 103 by known fixing members such as staples and pins. Also, the refractory coating holding means 106 is fixed to the column 100 by welding. Furthermore, in this embodiment, rod-shaped ribs 109 are provided between the lining material 103 and the pillars 100 and the refractory covering material holding means 106 . Thereby, the refractory coating holding means 106 can be strongly stretched.

In the fireproof structure of this embodiment, the outer surface of the column 100 except for the surface facing the space 104 between the column 100 and the first panel 2 is covered with the fireproof covering material 102, and the space 104 is closed. A refractory coating 102 is provided on the . In particular, in this embodiment the refractory cladding 102 is provided along the refractory cladding retaining means 106 . The fireproof covering material 102 is a fireproof member. Examples of the fireproof coating material 102 include rock wool, inorganic spray material, inorganic mat material, inorganic sheet material, and inorganic board material.

In this embodiment, the fireproof structure using the fireproof coating material holding means 106, the ribs 109, etc. is described, but the present invention is not limited to this. The covering material holding means 106, the ribs 109, etc. may not be used.

Furthermore, in the fireproof structure of this embodiment, a heat insulating material 105 is provided on the indoor side of the first panel 2 . In this embodiment, the heat insulating material 105 is provided on the indoor side of the lining material 103 inside the space 104, and the heat insulating material 105 is provided between the steel frame 1 and the fireproof covering material holding means 106 outside the space 104. It is This heat insulating material 105 is, for example, rock wool or glass wool. In this embodiment, the heat insulating material 105 is provided both inside and outside the space 104 on the indoor side of the first face member 2, but the present invention is not limited to this. For example, the heat insulating material 105 may be provided only outside the space 104, the heat insulating material 105 may be provided only inside the space 104, and the heat insulating material 105 may not be provided both inside and outside the space 104. .

The fireproof structure of the present embodiment has the following effects due to the configuration described above.

In the fire-resistant structure of the present embodiment, since a face material such as a gypsum board is not provided on the indoor side of the steel frame 1, the distance between the outer wall 101 and the pillar 100 is greater than when a face material is provided on the indoor side of the steel frame 1. Large space. Therefore, it is easy to apply the fireproof covering material 102 to the pillar 100 .

In this embodiment, the outer surface of the pillar 100 excluding the surface facing the space 104 is covered with the fireproof covering material 102 . Furthermore, a fireproof covering material 102 is provided so as to block this space 104 . As a result, the fire resistance of the pillar 100 can be ensured, and the fire-resistant coating material can be applied more easily than when the entire surface of the pillar 100 is covered with the fire-resistant coating material.

Moreover, since the space 104 between the pillar 100 and the first panel 2 is large, a heat insulating material 105 can be provided on the indoor side of the first panel 2 . This heat insulating material 105 can further improve the heat insulating properties of the building.

In the fire-resistant structure of this embodiment, as shown in FIG. 17, one steel frame 1 is provided between two lining materials 103, but the present invention is not limited to this. For example, as shown in FIG. 19A, the steel frame 1 may not be provided between the two lining materials 103 . Also, as shown in FIG. 19B , two adjacent steel frames 1 may be provided between two lining materials 103 .

The fireproof structure of this embodiment can also be applied to exterior corners of buildings. A corner is a corner formed when two outer walls of a building meet. Therefore, as shown in FIG. 20, the external corner of this embodiment includes a first outer wall 107 and a second outer wall 108 adjacent to the first outer wall 107 in a direction crossing it. At the corner where the first outer wall 107 and the second outer wall 108 meet, an L-shaped corner outer wall material 50 is provided. The corner outer wall material 50 is butted against the first outer wall 107 and the second outer wall 108 via the joiner 14 (see FIG. 20). A seal 17 is provided at the abutting portion between the first outer wall 107 and the corner outer wall material 50 and at the abutting portion between the second outer wall 108 and the corner outer wall material 50 . The corner outer wall material 50 is fixed to the second face material 3 via the fasteners 6 . In addition, in this embodiment, two adjacent steel frames 1 are provided on the indoor side of the corner where the first outer wall 107 and the second outer wall 108 meet.

As shown in FIG. 20 , in the fire-resistant structure at the outside corner, the pillar 100 faces the first face member 2 of the first outer wall 107 and the first face member 2 of the second outer wall 108 . One of the lining materials 103 is fixed to the portion facing the pillar 100 on the indoor side surface of the first panel 2 of the first outer wall 107 . The other lining material 103 is fixed to the portion of the second outer wall 108 facing the pillar 100 on the indoor side of the first panel 2 . That is, two backing materials 103 face different sides of the column 100, respectively.

Even in the fireproof structure at the external corner, the fireproof coating material is held from the surface of the pillar 100 that is not opposed to the first face member 2 and is positioned substantially vertically to the vicinity of the back surface of the first face member 2. Means 106 are provided. Specifically, as shown in FIG. 20, a refractory coating material holding means 106 is provided from one of the lining materials 103 to the pillars 100, and a refractory coating material holding means 106 is provided from the other lining material 103 to the pillars 100. It is A rod-shaped rib 109 is provided between the lining material 103 and the column 100 and the refractory covering material holding means 106 .

In the external corner fire-resistant structure, the outer surface of the column 100 except for the surface facing the space 104 between the column 100 and the first panel 2 of the first outer wall 107 and the first panel 2 of the second outer wall 108 is covered with a fireproof covering material 102, and the fireproof covering material 102 is provided so as to block this space 104. - 特許庁In particular, in this embodiment, the refractory cladding 102 is provided along the refractory cladding retaining means 106 (see FIG. 20).

Since the pillar 100 located at the outward corner faces the first outer wall 107 and the second outer wall 108, a gypsum board or the like is provided on the indoor side of the steel frame 1 of the first outer wall 107 and the second outer wall 108. If there is, it is difficult to apply the fireproof covering material to the pillar 100 . However, in this embodiment, no gypsum board or the like is provided on the indoor side of the steel frame 1 in both the first outer wall 107 and the second outer wall 108 that constitute the external corners. Therefore, the space between the column 100 and the first outer wall 107 and the second outer wall 108 is large, which makes it easy to apply the fireproof coating 102 to the column 100 .

In this embodiment, the outer surface of the pillar 100 excluding the surface facing the space 104 is covered with the fireproof covering material 102 , and the fireproof covering material 102 is provided so as to block the space 104 . As a result, the fire resistance of the pillars 100 positioned at the external corners can be ensured, and the fireproof coating material can be applied more easily than when the entire surface of the pillars 100 positioned at the external corners is covered with the fireproof coating material.

Also, in the fireproof structure of the outward corner, the heat insulating material 105 may or may not be provided on the indoor side of the first panel 2 .

Reference Signs List 1 steel frame 2 first face material 25, 26 vertical sides 27, 28 horizontal side 3 second face material 35, 36 vertical sides 37, 38 horizontal side 4 face material 5 exterior wall material 6 fastener 100 pillar 102 fireproof covering material 104 Space 105 Thermal Insulation 106 Refractory Covering Holding Means 107 First Outer Wall 108 Second Outer Wall

Claims (6)

A fireproof structure comprising an outer wall and a pillar provided on the indoor side of the outer wall,
The outer wall is
A plurality of vertically long steel frames lined up on the left and right with a predetermined interval,
A face material having fire resistance provided on the outdoor side of the steel frames along the plurality of steel frames;
an exterior wall material provided on the outdoor side of the face material;
with
The outer surface of the pillar excluding the surface facing the space between the pillar and the facing material is coated with a fireproof coating material,
A fireproof covering material is provided so as to close the space between the pillar and the face material,
A fastener for fastening the outer wall material is fixed to the steel frame located in the space blocked by the fireproof covering material,
The outer surface of the column excluding the surface facing the space between the column and the face member provided on the outdoor side of the steel frame, and the space between the column and the face member provided on the outdoor side of the steel frame The fireproof covering material is provided continuously and integrally so as to block ,
The face material includes a first face material that is rectangular in front view and is provided on the outdoor side of the steel frame, and a second face material that is rectangular in front view and is provided on the outdoor side of the first face material. and
A heat insulating material is provided on the indoor side of the first face material with a gap from the first face material,
Fire resistant construction. The steel frame is a lightweight steel frame ,
The outer wall material is rectangular in front view,
Two vertical sides of the first face member are on the outdoor side of the steel frame,
The two vertical sides of the second face material are on the outdoor side of a steel frame different from the steel frame where the vertical sides of the first face material are located,
The two horizontal sides of the second surface material and the two horizontal sides of the first surface material are displaced in the vertical direction,
The two long sides of the exterior wall material constructed in the lateral direction do not overlap the two lateral sides of the first panel and the two lateral sides of the second panel in the thickness direction, and the fastening is performed. It is fixed to the steel frame via a tool,
A fire resistant structure according to claim 1. The first face material and the second face material are gypsum boards,
A fire resistant structure according to claim 2. At least the second face material is a calcium silicate plate,
A fire resistant structure according to claim 2. The outer wall comprises a first outer wall forming an external corner and a second outer wall adjacent in a direction intersecting the first outer wall,
The pillar faces the first outer wall and the second outer wall,
The outer surface of the pillar excluding the surface facing the space between the pillar and the face material of the first outer wall and the face material of the second outer wall is covered with the fireproof coating material,
The refractory covering is provided so as to block the space between the pillar and the face material of the first outer wall and the face material of the second outer wall,
A fire resistant structure according to any one of claims 1 to 4. A refractory covering material holding means is provided from the surface of the column that is not facing the face material and is positioned substantially vertically to the vicinity of the back surface of the face material,
the refractory cladding holding means is provided with the refractory cladding;
6. A fire resistant structure according to any one of claims 1-5.

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