JP2016084665A - Fireproof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof structure capable of improving a fire resistance of an exterior wall and a column on an indoor side of the exterior wall and being easily constructed.SOLUTION: A fireproof structure comprises an exterior wall 101 and a column 100 installed on an indoor side of the exterior wall 101. The exterior wall 101 comprises: multiple vertically long iron frames 1, which are horizontally disposed with a predetermined space between adjacent iron frames; fireproof face bars 4, which are disposed along multiple iron frames 1 on an outdoor side of the iron frames 1; and exterior wall materials 5 disposed on an outdoor side of the face bars 4. Outer face of the column 100 excluding a surface facing a space 104 between the column 100 and the face bar 4 is covered with a fireproof covering material 102. The fireproof covering material 102 is disposed to fill the space 104 between the column 100 and the face bar 4.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to a fireproof structure, and more particularly, to a fireproof structure including an outer wall in a steel structure building and a column provided on the indoor side of the outer wall.

  Buildings having fire resistance are roughly classified into fire-resistant buildings and semi-fire-resistant buildings defined by the Building Standard Law, depending on the difference in fire resistance. In fire-resistant buildings, structures such as walls, columns, beams, and floors must have predetermined fire resistance. For example, in the case of a fireproof building with a predetermined number of floors, the fireproof structure of the outer wall is required to have a fireproof performance for one hour (Building Standard Law Enforcement Ordinance Article 107).

  In particular, various structures are employed in order to improve the fire resistance of the outer wall and the pillar on the indoor side of the outer wall.

  For example, Patent Document 1 describes an outer wall structure in which a partition panel having two gypsum boards is provided on each of the outdoor side and the indoor side.

  Patent Document 2 describes that after the outer wall is constructed, the periphery of the pillar on the indoor side of the outer wall is covered with a fireproof coating material.

JP 2004-176316 A JP 2004-225271 A

  However, in the case of the outer wall structure as described in Patent Document 1, because the partition panel is provided on each of the outdoor side and the indoor side, the interval between the column and the outer wall is narrow, and as described in Patent Document 2, There was a problem that construction such as covering the pillar with a fireproof covering material was difficult.

  This invention is made | formed in view of said point, and it aims at providing the fire resistance structure which can improve the fire resistance of the outer wall and the pillar in the indoor side of an outer wall, and is easy to construct.

The fireproof structure according to the present invention is 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 left and right at a predetermined interval,
A face material having fire resistance performance provided on the outdoor side of the steel frame along the plurality of steel frames,
An outer wall material provided on the outdoor side of the face material;
With
The outer surface of the column excluding the surface facing the space between the column and the face material is covered with a fireproof coating material,
A fireproof coating material is provided so as to close the space between the column and the face material.

  In the present invention, the fire resistance of the outer wall and the pillar 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. It is a top view of the outer wall structure of FIG. It is XX sectional drawing of the outer wall structure of FIG. It is a front view which shows an example of the construction process of the outer wall structure of FIG. It is a front view which shows an example of the construction process of the outer wall structure of FIG. It is a front view which shows an example of the construction process of the outer wall structure of FIG. It is a front view which shows an example of the construction process of the outer wall structure of FIG. 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 outer wall structure in the fireproof structure of this embodiment. It is sectional drawing of the outer wall structure shown in FIG. 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 a modification of the metal auxiliary material used in the outer wall structure in the fireproof structure of the present embodiment. It is sectional drawing which shows another modification of the outer wall structure in the fireproof structure of this embodiment. It is a perspective view which shows an example of the supporting member used with the outer wall structure shown in FIG. 15A to 15C show a modification of the support member used in the outer wall structure in the fireproof structure of the present 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. It is sectional drawing which shows the outer wall structure using the supporting member shown in FIG. It is a top view which shows the fireproof structure which concerns on this embodiment. It is a perspective view of the fireproof structure shown in FIG. 19A and 19B are plan views showing a modification of the fireproof structure according to the present embodiment. It is a top view which shows an example of the fireproof structure which concerns on this embodiment in a corner.

  Hereinafter, modes for carrying out the present invention will be described.

  The fireproof structure according to the present embodiment includes an outer wall 101 and a column 100 provided on the indoor side of the outer wall 101. The outer wall 101 includes a plurality of vertically long steel frames 1 arranged on the left and right sides at a predetermined interval, and a face material 4 having fire resistance provided along the plurality of steel frames 1 on the outdoor side of the steel frame 1. And an outer wall material 5 provided on the outdoor side of the face material 4. The outer surface of the pillar 100 excluding the face facing the space 104 between the pillar 100 and the face material 4 is covered with the fire resistant covering material 102 and fire resistant so as to close the space 104 between the pillar 100 and the face material 4. A covering material 102 is provided.

  In the fireproof structure of the present embodiment, since the face material is not provided on the indoor side of the steel frame 1, the space 104 between the pillar 100 and the outer wall 101 is large. For this reason, 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. Moreover, 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 provided on the outdoor side of the steel frame 1. The first face material 2 is rectangular in front view and the outdoor side of the first face material 2. The outer wall material 101 is rectangular in front view, and the two vertical sides 25 and 26 of the first face material 2 are made of the steel frame 1. Located on the outdoor side, the two vertical sides 35 and 36 of the second face member 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 member 2 are located. The two lateral sides 37 and 38 of the two face members 3 and the two lateral sides 27 and 28 of the first face member 2 are shifted in the vertical direction, and 2 of the outer wall material 5 constructed in the laterally long direction. The two long sides 57 and 58 do not overlap the two lateral sides 27 and 28 of the first face member 2 and the two lateral sides 37 and 38 of the second face member 3 in the thickness direction, and the fastener 6 Steel frame 1 It may be fixed.

  In the present embodiment, the first face material 2 and the second face material 3 may be a gypsum board.

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

  In the present embodiment, the outer wall 101 includes a first outer wall 107 that constitutes a protruding corner, and a second outer wall 108 that is adjacent to the first outer wall 107 in a direction intersecting the first outer wall 107, and the column 100 includes the first outer wall 107. And the outer surface of the pillar 100 excluding the face facing the space 104 between the pillar 100 and the face material 4 in the first outer wall 107 and the face material 4 in the second outer wall 108. The fireproof covering material 102 is covered with the fireproof covering material 102, and the fireproof covering material 102 covers the space 104 between the pillar 100 and the face material 4 in the first outer wall 107 and the face material 4 in the second outer wall 108. It may be provided.

  In the present embodiment, the fireproof coating material holding means 106 is provided from the surface of the column 100 that is not opposed to the face material 4 and is located substantially vertically to the vicinity of the back surface of the face material 4. A fireproof covering material 102 may be provided on the holding means 106.

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

  Hereinafter, the fireproof structure of the present embodiment will be described in more detail.

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

  The steel frame 1 is a long trunk edge. The cross-sectional shape of the steel frame 1 may be rectangular like a square pipe, for example, or C-shaped. The 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 trunk edge, and one steel frame 1 may be formed by combining a plurality of trunk edges. The steel frame 1 of this embodiment is a lightweight steel frame. The steel frame 1 is not limited to a lightweight steel frame.

  The first face material 2 and the second face material 3 are rectangular in front view. The first face material 2 and the second face material 3 are made of a material having fire resistance. The 1st face material 2 and the 2nd face material 3 of this embodiment are gypsum boards. As this gypsum board, the reinforced gypsum board prescribed | regulated by JISA6901 is mentioned, for example. Furthermore, it is preferable that the gypsum at the core of the reinforced gypsum board is waterproofed with a water repellent material, etc., and it is possible to prevent the strength and durability of the reinforced gypsum board from being reduced by rainwater or moisture. It is something that can be done. In addition, the 1st face material 2 and the 2nd face material 3 are not restricted to a gypsum board, but should just be made from the material which has fire resistance. For example, the first face material 2 and the second face material 3 may be a calcium silicate plate or a cement plate. For example, the first face material 2 and the second face material 3 may both be calcium silicate plates. Since the calcium silicate plate is thinner than the gypsum board, the outer wall 101 can be made thin, and the fire resistance of the calcium silicate plate can ensure the fire resistance of the outer wall 101. Moreover, the 1st face material 2 may be a gypsum board, and the 2nd face material 3 may be a calcium-silicate board. In this case, since the calcium silicate plate is higher in water resistance than the gypsum board, the second face member 3 located on the outdoor side of the first face member 2 is a calcium silicate plate, so that the water resistance of the outer wall 101 is increased. Can be improved.

  The thickness of the 1st face material 2 and the 2nd face material 3 is selected according to required fireproof performance, for example, is in the range of 15-27 mm. Moreover, although the magnitude | size of the 1st face material 2 and the 2nd face material 3 is not specifically limited, For example, the short side is the range of 600-1220 mm, and the long side is the range of 1200-3030 mm.

  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 face member 2 and the vertical sides 35 and 36 of the second face member 3 have the same length, and the horizontal sides 27 and 28 of the first face member 2 and the second The lateral sides 37 and 38 of the face material 3 are preferably the same length.

  The outer wall material 5 is a rectangular ceramic siding in front view. The magnitude | size and thickness of ceramic siding are set suitably, for example, the short side is the range of 300-1000 mm, the long side is the range of 1000-3600 mm, and the thickness is the range of 12-40 mm.

  Then, the construction structure of the steel frame 1, the 1st face material 2, the 2nd face material 3, and the outer wall material 5 in the outer wall 101 of this embodiment is demonstrated 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 trunk edge that is vertically long, that is, long in the vertical direction. The steel frames 1 are arranged in parallel in the left-right direction with a predetermined interval (see FIGS. 1 and 2). The intervals at which the steel frames 1 are installed are set as appropriate, and may be, for example, equal intervals.

  In the outer wall 101 of this embodiment, as shown to FIGS. 1-4, the some 1st face material 2 is provided adjacent to the up-down and right-and-left along the steel frame 1 arranged in a row.

  In this embodiment, the two vertical sides 25 and 26 of the 1st face material 2 are located in the steel frame 1 (refer FIG. 2). In the present specification, the steel frame 1 in which the vertical sides 25 and 26 of the first face member 2 are located is also referred to as a first steel frame 11. When a plurality of first face members 2 are installed side by side in the left-right 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 material 2 is fixed to the steel frame 1 by a fixing member. Examples of the fixing member include a screw, a nail, and a screw.

  When the plurality of first face members 2 are adjacent to each other in the up-down direction, the first face members 2 are abutted on the lateral sides. The portion where the lateral sides of the first face member 2 are abutted is the abutting portion 7 (see FIG. 4). That is, the lateral side 281 of the first face member 21 located on the upper side and the lateral side 272 of the first face member 22 located on the lower side face each other.

  Moreover, when the some 1st face material 2 is adjacent to the left-right direction, as for the 1st face material 2, the vertical sides have faced each other. The part where the vertical sides of the first face material 2 are abutted is the abutting part 8 (see FIG. 4). That is, the vertical side 263 of the first face member 23 located on the right side and the vertical side 254 of the first face member 24 located on the left side face each other.

  In the present embodiment, the second face material 3 is provided on the outdoor side of the plurality of first face materials 2 arranged side by side in the vertical and horizontal directions (see FIGS. 1 to 3 and FIG. 5). That is, the second face material 3 is along the steel frames 1 arranged in a plurality, like the first face material 2. In the present embodiment, the two longitudinal sides 35 and 36 of the second face member 3 are located on the steel frame 1 different from the steel frame 1 (steel 11) where the longitudinal sides 25 and 26 of the first face member 2 are located. (See FIGS. 1 and 2). In this specification, the steel frame 1 in which the vertical sides 35 and 36 of the second face member 3 are located is also referred to as a second steel frame 12. When a plurality of second face members 3 are installed side by side in the left-right direction, the vertical sides 35 and 36 of all the second face members 3 are located on the second steel frame 12 (see FIG. 2). The second face material 3 is fixed to the steel frame 1 by a fixing member via the first face material 2. Examples of the fixing member include a screw, a nail, and a screw.

  When the plurality of second face materials 3 are adjacent to each other in the vertical direction, the second face materials 3 are abutted on the lateral sides. The portion where the lateral sides of the second face material 3 are abutted is the abutting portion 9 (see FIG. 5). That is, the lateral side 381 of the second face member 31 located on the upper side and the lateral side 372 of the second face member 32 located on the lower side are in contact with each other.

  When the 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 are abutted. The portion where the vertical sides of the second face member 3 are abutted is the abutting portion 10 (see FIG. 5). That is, the vertical side 363 of the second face member 33 located on the right side and the vertical side 354 of the second face member 34 located 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 directions of the vertical side and the horizontal side are the same. Further, 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 positioned so as to be shifted in the vertical direction (see FIGS. 3 and 5). ). That is, the closest side edges of the first face material 2 and the second face material 3 are not overlapped in the thickness direction but are separated in the vertical direction. When a plurality of second face materials 3 are adjacent to each other in the vertical direction, the abutting portions 9 between the lateral sides of the second face material 3 and the lateral sides of the first face material 2 that are closest to each other. The abutting portion 7 is displaced in the vertical direction. Since the butted portion 9 between the lateral sides of the second face member 3 and the butted portion 7 between the lateral sides of the first face member 2 do not overlap in the thickness direction, Even when the material 3 contracts and a gap is formed in the abutting portion 9 between the lateral sides of the second face material 3, the back side of the abutting portion 9 between the lateral sides of the second face material 3 Since the 1st face material 2 exists, fire resistance becomes difficult to fall.

  The distance in the vertical direction between the horizontal sides closest to each other of the first face member 2 and the second face member 3 is appropriately set. For example, when the lengths of the vertical sides of the first face material 2 and the second face material 3 are the same, the vertical directions of the lateral sides closest to each other of the first face material 2 and the second face material 3 This distance can be ½ of the length of the vertical sides 25 and 26 of the first face member 2. In the present embodiment, the distance between 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 is the longitudinal side 25 of the first face member 2. , About 1/2 of the length of 26. In this case, since the abutting portions 7 and 9 between the lateral sides of the first face material 2 and the second face material 3 exist at equal intervals, the abutting portion 15 between the long sides of the outer wall material 5 and the first It is 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 between the lateral sides of the first face material 2 and the second face material 3 do not overlap.

  In the present embodiment, a plurality of vertically long joiners 14 are provided on the outdoor side surface of the second face member 3 (see FIG. 6). The joiner 14 overlaps a portion (butting portion 16) where the vertical sides of the plurality of outer wall materials 5 provided on the outdoor side of the second face material 3 are abutted on the outdoor side surface of the second face material 3. It is arranged at a predetermined position (see FIG. 7). The joiner 14 is fixed to the steel frame 1 via the second face material 3 and the first face material 2. Examples of the joiner 14 include a joiner having a hat-shaped cross section as shown in FIG.

  In the present embodiment, a plurality of fasteners 6 are further provided on the surface on the outdoor side of the second face member 3 (see FIG. 6). The fastener 6 overlaps the portion (butting portion 15) where the lateral sides of the plurality of outer wall members 5 provided on the outdoor side of the second face member 3 are abutted on the outdoor side surface of the second face member 3. It is arranged at 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 the fixing member include screws, nails, and screws, and a plurality of types may be used in combination.

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

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

  The holding part 62 includes 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 the approximate center in the vertical direction of the fixed portion 61. The second piece 622 is provided so as to protrude from the front end of the first piece 621 toward the upper end portion 61 a side of the fixed portion 61. The 2nd piece 622 supports the outer wall material 5 attached to the outdoor side of the upper end part 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. At the front end of the first piece 621, a third piece 623 protruding toward the lower end 61b side of the fixing portion 61 is provided (see FIG. 8A). This 3rd piece 623 supports the outer wall material 5 attached to the outdoor side of the lower end part 61b (refer FIG. 8B). The third piece 623 of the present embodiment is divided into two parts, but may be provided continuously. In addition, the up-down direction and the left-right direction of the fastener 6 mean the up-down direction and the left-right direction of the fastener 6 in the front view of the fireproof structure when the fastener 6 is used.

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

  The inward piece 631 is provided so as to extend from the front end of the protruding piece 63 substantially in parallel to the fixed portion 61 and to the inside of the fixed portion 61 (see FIG. 8A). In the protruding piece 63, the inward piece 631 is provided on the lower end 61 b side of the fixing portion 61 with respect to the first piece 621, and the upper edge of the inward piece 631 provided on the left and right protruding pieces 63 is the first piece 621. The first piece 621 is supported in contact with the lower surface of the plate. As described above, by supporting the first piece 621 by the inward piece 631 substantially perpendicular to the first piece 621, the first piece 621 is hardly deformed. The outward piece 632 is provided so as to extend from the front end of the protruding piece 63 substantially parallel to the fixed portion 61 and to the outside of the fixed portion 61. By the outward piece 632, the deformation of the protruding piece 63 can be further suppressed.

  The fastener 6 having the above-described configuration can be obtained by, for example, appropriately cutting and 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 a part of the fixing portion 61.

  In the present embodiment, the length in the vertical direction and the length in the horizontal direction of the fastener 6 are substantially the same, but are not limited thereto. The length of the fastener 6 in the left-right direction is appropriately set, but is preferably substantially the same as the lengths of the two long sides 57 and 58 of the outer wall material 5. The phrase “substantially the same” does not need to be the same in a strict sense, and includes the meaning that it may be slightly shorter. For example, the fastener 6 may be shorter than the long sides 57 and 58 of the outer wall material 5 so as not to overlap the joiner 14. If the fastener 6 is long in the left-right direction, the construction of the fastener 6 is facilitated, and the outer wall material 5 is more easily supported by the fastener 6. When the fastener 6 is long, the fixing holes 610 may be appropriately provided according to the arrangement interval of the steel frames 1.

  In the present embodiment, as shown in FIG. 6, six fasteners 6 are provided on the surface of the second face member 3 on the outdoor side. The number of the fasteners 6 is not limited to this, and is appropriately set according to the shape of the fasteners 6. For example, a plurality of fasteners 6 whose left and right lengths are shorter than ½ of the long side of the outer wall member 5 may be provided on the surface of the second face member 3 on the outdoor side.

  Moreover, as shown in FIG. 6, it is preferable that the moisture permeable waterproof sheet 40 is provided in the surface of the 2nd face material 3 at the outdoor side. 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 moisture from entering and transmitting moisture (water vapor). Moisture is released to the surface side by the moisture-permeable waterproof sheet 40, and it becomes easy to suppress the occurrence of condensation in the fireproof structure. Further, even when moisture such as rainwater enters from the outer wall material 5, it becomes easy to prevent moisture from entering the second face material 3 side. The moisture permeable waterproof sheet 4 may be provided on the entire surface of the second face member 3.

  In the present embodiment, a plurality of outer wall members 5 are provided on the outdoor side of the plurality of second face members 3 arranged side by side in the vertical and horizontal directions (see FIGS. 1 to 3 and FIG. 7). That is, the outer wall material 5 is along the steel frames 1 arranged in a plurality, 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 a short side and the horizontal side is a long side.

  The outer wall material 5 is installed via the fastener 6 and the joiner 14 provided on the surface of the second face member 3 on the outdoor side (see FIGS. 2 and 7). Two short sides 55 and 56 of the outer wall material 5 are located on the steel frame 1 (see FIG. 2). The steel frame 1 to which the outer 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 outer wall members 5 are adjacent in the vertical and horizontal directions, the short sides 55 and 56 of all the outer wall members 5 are in contact with the joiner 14 and are located on the steel frame 1. The outer wall material 5 is fixed to the steel frame 1 with a fastener 6 via the first face material 2 and the second face material 3.

  When the plurality of outer wall materials 5 are adjacent to each other in the vertical direction, the lateral sides of the outer wall material 5 are in contact with each other via the fastener 6. A portion where the long sides of the outer wall material 5 are abutted is the abutting portion 15 (see FIG. 7). That is, the lateral side 581 of the outer wall member 51 positioned on the upper side and the lateral side 572 of the outer wall member 52 positioned on the lower side are abutted via the fastener 6.

  Moreover, when the some outer wall material 5 adjoins the left-right direction, the outer wall material 5 has faced each other through the joiner 14 (refer FIG. 7). The portion where the short sides of the outer wall material 5 are abutted is the abutting portion 16. That is, the short side 563 of the outer wall member 53 located on the right side and the right short side 554 of the outer wall member 54 located on the left side abut each other. It is preferable that the butting portion 16 between the short sides of the outer wall material 5 is filled with a sealing material 17 in order to close the gap. As the sealing material 17, for example, a silicon-based resin is used.

  The two long sides 57 and 58 of the outer wall material 5 do not overlap with the two lateral sides 27 and 28 of the first face member 2 and the two lateral sides 37 and 38 of the second face member 3 in the thickness direction. (See FIG. 3). The positions of the two short sides 55 and 56 of the outer wall material 5 are in the thickness direction with the two vertical sides 25 and 26 of the first face member 2 and the two vertical sides 35 and 36 of the second face member 3. They may or may not match.

  When the plurality of outer wall materials 5 are adjacent to each other in the vertical direction, the butted portion 15 between the long sides of the outer wall material 5, the butted portion 7 between the lateral sides of the first face material 2, and the second face material 3. Do not overlap with the abutting portion 9 between the horizontal sides (see FIG. 7). Thereby, in the case of a fire, even if the outer wall material 5 contracts and a gap is formed in the abutting portion 15 between the long sides of the outer wall material 5, the abutting portion 15 between the long sides of the outer wall material 5 Since the 2nd face material 3 exists in the back surface side, it becomes difficult for fireproof performance to fall.

  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 outer wall member 5. Further, it is preferable that the lateral side of the second face member 3 and the lateral side of the first face member 2 are shifted in the vertical direction by the same length as the length of the short side of the outer wall member 5. . The same length does not need to be the same in a strict sense, but includes the meaning that they are substantially the same. Thereby, the abutting portion 15 between the long sides of the outer wall material 5, the abutting portion 7 between the lateral sides of the first face member 2, and the abutting portion 9 between the lateral sides of the second face member 3 are overlapped. It can be easily arranged so that it does not become.

  It is more preferable that the two long sides of the outer wall material 5 are positioned approximately at the center between the horizontal side of the first face member 2 and the horizontal side of the second face member 3 in the vertical direction. The approximate center does not need to be the center (middle) in a strict sense, but includes the meaning that it may be slightly shifted up and down. For example, when a sub-plate (size 3 × 6, 910 × 1820 mm) is used as the first face material 2 and the second face material 3, each is provided in a horizontally long direction and has a vertical side in the vertical direction. It can be arranged with a shift of 1/2 of the dimension, that is, 1.5 scale. Then, the outer wall material 5 having a size of 1.5 × 10 (455 × 3030 mm) is used in the horizontal direction, and the long side of the outer wall material 5 is set to the horizontal side of the first face material 2 and the first side. It can be located in the approximate center between the up-down direction with the horizontal side of 2 face material 3. In this case, the side of the first face member 2, the side of the second face member 3, and the long side of the outer wall member 5 are easily arranged so as not to overlap in the thickness direction. For example, the first face member The horizontal side of 2, the horizontal side of the second face material 3, and the long side of the outer wall material 5 are arranged approximately 0.75 scale apart from each other.

  In the present embodiment, the sizes of the first face material 2 and the second face material 3 are the same, and the directions of the long side and the short side of the first face material 2 and the second face material 3 are the same. It is. This facilitates the construction so that the lateral sides of the first face member 2, the lateral sides of the second face member 3, and the long sides of the outer wall member 5 do not overlap in the thickness direction. In addition, the magnitude | size and direction of the 1st face material 2 and the 2nd face material 3 may differ. For example, both the first face material 2 and the second face material 3 may be arranged so that the vertical side is a long side and the horizontal side is a short side. Alternatively, either one of the first face member 2 and the second face member 3 has a long side as a long side and a horizontal side as a short side (that is, construction in the horizontal direction), and the other vertical side as a short side and a horizontal side. You may arrange | position so that a side may become a long side (namely, construction of a longitudinal direction).

  As shown in FIGS. 9 and 10, the metal tape 18 is provided at the abutting 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 abutted. May be. The metal tape 18 may be provided so as to cover the abutting portion 7 between the lateral sides across the lateral side 281 of the first face member 21 and the lateral side 272 of the first face member 22. preferable. In the abutting portion 7 between the lateral sides, 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. The metal tape 18 is preferably provided over substantially the entire length of the outer wall 101 in the left-right direction. The substantially full length does not need to be the full length in a strict sense, 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 butt portion 7.

  Examples of the material of the metal tape 18 include aluminum and steel. As the metal tape 18, an aluminum tape is preferable. Since aluminum has a relatively high thermal emissivity among metals, it is preferable that heat is not easily transmitted from the butt 7 to the first face material 2 and the second face material 3 in the event of a fire. Aluminum is preferable because it is relatively inexpensive among metals. Even when the first face material 2 contracts in the event of a fire and a gap is formed in the abutting portion 7 between the lateral sides, the gap is covered with the metal tape 18, so that the fire resistance performance Is less likely to drop. Moreover, the metal tape 18 may be provided also in the abutting portion 8 between the vertical sides of the first face member 2. In this case, the fire resistance can be further improved. In addition, since the steel frame 1 exists in the back surface side, the metal tape 18 does not need to be provided in the abutting portion 8 between the vertical sides of the first face material 2.

  Since the fire resistance performance of the outer wall 101 is improved by providing the metal tape 18 at the abutting portion 7, even if the thicknesses of the first face material 2 and the second face material 3 are both 15 mm, for example. 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, the first face material 2 and the second face material 3 are lighter than the face material such as gypsum board having a thickness larger than 15 mm. 2 face material 3 can be constructed easily.

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

  The metal auxiliary material 19 has at least a fixing portion 191. The fixing portion 191 is a portion for fixing the metal auxiliary material 19 itself to the second face material 3. The fixing portion 191 may be appropriately provided with a fixing hole 190 for inserting a fixing member. With the metal auxiliary material 19, the second face material 3 can be pressed from the surface side. 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. Warpage is easily suppressed, and the fire resistance of the steel frame outer wall fireproof structure is further improved. The place where the metal auxiliary material 19 is provided is selected as appropriate, and may be, for example, near the butted portion 9 between the lateral sides of the surfaces of the second face materials 31 and 32. Since the abutting portion 9 between the lateral sides of the second face material 3 may shrink or warp when it is ignited, the metal auxiliary material 19 prevents the second face material 3 from falling off. be able to. The size of the fixing portion 191 is appropriately set according to the size of the second face material 3 and the outer wall material 5.

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

  Although this metal auxiliary material 19 is demonstrated using FIG. 12A and FIG. 12B, the shape of the metal auxiliary material 19 is not limited to the shape of FIG. 12A and FIG. 12B. For example, the metal auxiliary material 19 may be formed only from the fixing portion 191 and may be flat. 12A and 12B, the metal auxiliary material 19 may include a protruding portion 192 at the lower end of the fixed portion 191 or may include a protruding portion 192 at the upper end of the fixed portion 191. A protrusion 192 may be provided in the middle of the fixed portion 191 in the up-down direction. In addition, the up-down direction and the left-right direction of the metal auxiliary material 19 mean the up-down direction and the left-right direction of the metal auxiliary material 19 in the front view of the fireproof structure when the metal auxiliary material 19 is used.

  The metal auxiliary material 19 in FIG. 12A will be described. The projecting portion 192 includes a first piece 195 and a second piece 196. The first piece 195 is provided 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 appropriately selected. The rear end of the second piece 196 exists on the extension line of the fixing portion 191. That is, the rear end of the second piece 196 is in contact with the second face material 3. In FIG. 12A, the cross-sectional shape of the protruding portion 192 of the metal auxiliary material 19 is L-shaped, and the upper side 197 that is the joint between the first piece 195 and the second piece 196 is the front end 193 of the metal auxiliary material 19. It is. In FIG. 12A, the upper side 197 is in contact with the back surface of the outer wall material 5. The metallic auxiliary member 19 may include an outwardly facing piece 194 that extends in parallel with the fixing portion 191 from the rear end of the second piece 196. The outward piece 194 makes it easier for the deformation of the second piece 196 to be suppressed.

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

  The metal auxiliary member 19 is preferably provided over the entire horizontal length of the fireproof structure of the present embodiment. Thereby, the 2nd face material 3 can be firmly pressed from the surface side. Moreover, it is preferable that the metal auxiliary material 19 is provided across a plurality of second face materials 3 adjacent in the left-right direction. Since the metal auxiliary material 19 is provided across the plurality of second face materials 3, the plurality of second face materials 3 are stably pressed from the surface side by the metal auxiliary material 19. Therefore, it becomes easy to prevent the second face member 3 from falling off.

  Although the length of the metal auxiliary material 19 in the left-right direction is set as appropriate, the metal auxiliary material 19 is preferably long as shown in FIGS. 12A and 12B. When the long side of the outer wall member 5 is longer than the second face member 3, the length in the left-right direction of the metallic auxiliary member 19 is preferably longer than the lateral sides 37 and 38 of the second face member 3. More preferably, it is the same as the lengths of the long sides 57 and 58 of the material 5. “Same” does not need to be the same in a strict sense, and may mean that it may be slightly shorter and substantially the same. For example, in this embodiment, since the outer wall material 5 is constructed via the joiner 14, the metal auxiliary material 19 is shorter than the long sides 57 and 58 of the outer wall material 5 so as not to overlap the joiner 14. Good. In addition, as the metal auxiliary material 19, a plurality of materials whose left and right lengths are shorter than half the length of the long side of the outer wall material 5 may be arranged.

  The metal auxiliary material 19 is preferably the fastener 6. That the metal auxiliary material 19 is the fastener 6 means that the metal auxiliary material 19 has a function of the fastener 6, that is, a function of locking and fixing the outer wall material 5. The fastener 6 and the metal auxiliary material 19 are preferably integrated. That is, it is preferable to use the support member 20 having the functions of both the fastener 6 and the metal auxiliary material 19. FIG. 13 shows an example of a wall fireproof structure using the support member 20, and FIG. 14 shows an example of the support member 20. 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 material 5. . The first holding part 202 and the second holding part 203 have a shape protruding forward from the fixed part 201. The protruding height L of the second holding portion 203 from the fixing 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 outer wall material 5 is locked and fixed by the first holding portion 202 of the support member 20, a ventilation space is formed by the second holding portion 203, and the second face material 3 is pressed from the surface side by the fixing portion 201. be able to. The sizes of the fixing unit 201, the first holding unit 202, and the second holding unit 203 are appropriately set according to the size and weight of the second face material 3 and the outer wall material 5. When the support member 20 is used, in the fixing portion 201, an upper end portion on the outer wall material 5 side is an upper end portion 201a, and an end portion on the lower outer wall material 5 side is a lower end portion 201b.

  Although this support member 20 is demonstrated using FIG. 14, the shape of the support member 20 is not limited to the shape of FIG. As shown in FIG. 14, the support member 20 includes a first holding unit 202 at the lower end of the fixing unit 201 and a second holding unit 203 at the upper end of the fixing unit 201. Alternatively, the first holding unit 202 may be provided at the upper end of the fixing unit 201, and the second holding unit 203 may be provided at the lower end of the fixing unit 201. Or the 1st holding | maintenance part 202 may be provided in the middle of the up-down direction of the fixing | fixed part 201, and the 2nd holding | maintenance part 203 may be provided in the upper end or the lower end of the fixing | fixed part 201.

  The fixing portion 201 is appropriately provided with a fixing hole 210 for inserting a fixing member. The first holding unit 202 includes 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 201 b of the fixed portion 201. The fifth piece 225 is provided so as to protrude downward from the front end of the sixth piece 226. The fourth piece 224 is provided so as to protrude upward from the lower end of the fifth piece 225, and is provided in parallel with 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 is provided so as to protrude 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 is provided to project 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. The second piece 222 may be divided and provided in the same manner as the third piece 223. Further, the third piece 223 may be provided continuously similarly to the second piece 222. When the support member 20 is used, the fourth piece 224 is in contact with the back surface of the lower outer wall material 5 and supports the lower outer wall material 5 together with the third piece 223 (see FIG. 13). The rear end of the first piece 221 may be connected to the lower end 201b of the fixed portion 201, and is a single flat plate in which the first piece 221 and the sixth piece 226 are continuously integrated. The fourth piece 224 may protrude from the lower surface. The fourth piece 224 and the fifth piece 225 may be a single flat plate.

  In FIG. 14, the second holding unit 203 includes a first piece 231, a second piece 232, and a third piece 233. The first piece 231 of the second holding part 203 is from the upper end of the fixing part 201 so as to have a length shorter than the combined length of the first piece 221 and the sixth piece 226 of the first holding part 202. Projecting forward. The first piece 231 of the second holding unit 203 can have substantially the same protruding length as the sixth piece 226 of the first holding unit 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 protruding length L of the second holding portion 203. The second piece 232 is in contact with the back surface of the outer wall material 5, a ventilation space is formed between the outer wall material 5 and the second surface material 3, and the outer wall material 5 is applied to the force in the thickness direction of the outer wall material 5. It can be supported (see FIG. 13). The support member 20 may include an outward piece 234 that extends in parallel with the fixed portion 201 from the rear end of the third piece 233. The outward piece 234 makes it easier to suppress the deformation of the third piece 233.

  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, The four pieces 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 the first piece 221. It can be formed by cutting and raising a part of. 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 part of the fixing portion 201. By using the support member 20 in which the fastener 6 and the metal auxiliary material 19 are integrated, the construction is facilitated, and the functions of both the fastener 6 and the metal auxiliary material 19 can be obtained with one member. Since it is possible, 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, the support member 20 is preferably long as shown in FIG. When the long side of the outer wall member 5 is longer than the second face member 3, the length of the support member 20 in the left-right direction is preferably longer than the lateral sides 37 and 38 of the second face member 3. More preferably, the lengths of the long sides 57 and 58 are substantially the same. The phrase “substantially the same” does not need 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 and 58 of the outer wall material 5 so as not to overlap the joiner 14. Thereby, the 2nd face material 3 can be more stably pressed down from the surface side. As the support member 20, a plurality of members whose left and right lengths are shorter than half the length of the long side of the outer wall material 5 may be arranged.

  Further, the shape of the support member 20 is not limited to the above. For example, the support member 20 may have a shape like a modification of the support member 20 illustrated in FIGS. 15A, 15B, and 15C.

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

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

  As shown in FIG. 15A, the first holding unit 202 includes a first piece 221, a second piece 222, a third piece 223, a fourth piece 224, and a sixth piece 226.

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

  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 projects forward from the front end of the first piece 221, and the front end is bent downward.

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

  The 2nd holding | maintenance part 203 is comprised from the 1st piece 231, the 2nd piece 232, and the 3rd piece 233, as shown to FIG. 15A.

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

  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 protruding length of the third piece 233 is shorter than the protruding length of the first piece 231.

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

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

  The 2nd piece 222 of the 1st holding | maintenance part 202 is supporting the upper outer wall material 5 (refer 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 are held with the lower outer wall material 5 interposed therebetween (see FIG. 16).

  The second piece 232 of the second holding portion 203 is in contact with the back surface of the upper outer wall material 5, and the second piece 232 is connected to the fixing portion 201 via the first piece 231. In addition, the fourth piece 224 of the second holding portion 202 is in contact with the back surface of the lower outer wall material 5, and the fourth piece 224 is connected to the fixing portion 201 via the sixth piece 226. Therefore, a ventilation space is formed between the upper outer wall member 5 and the lower outer wall member 5 and the second face member 3 as shown in FIG.

  In addition, a vent hole 212 is provided in the sixth piece 226 of the first holding unit 202, and a vent hole 211 is provided in the first piece 231 of the second holding unit 203. Air can pass through the vent 212 and the vent 211. Further, since the protruding length of the third piece 233 of the second holding portion 203 is shorter than the protruding length of the first piece 231, the flow of air through the vent hole 211 provided in the first piece 231 is blocked. It's hard to be done. For this reason, in the outer wall 101 shown in FIG. 16, by installing the support member 20 shown in FIG. 16, it is possible to sufficiently ensure the air permeability of the ventilation space between the outer wall material 5 and the second face material 3. it can.

  Hereinafter, the fireproof structure of the present embodiment will be described in detail with reference to FIGS. 17 and 18.

  In the fireproof structure of the present embodiment, the pillar 100 is provided on the indoor side of the outer wall 101. Specifically, the pillar 100 is provided on the indoor side of the face material 4. More specifically, the 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 material 2. The pillar 100 is a structural material of a building and is a vertically long member. The material and the cross-sectional shape of the pillar 100 are not particularly limited. For example, the pillar 100 is made of metal and has a square cross section. The pillar 100 of this embodiment is a square copper tube. The pillar 100 is not limited to a square copper tube, and may be a known steel material such as C-shaped steel or H-shaped steel.

  In the fireproof structure of the present embodiment, two vertically long backing materials 103 are provided on the indoor side surface of the first face material 2. In the present embodiment, two backing materials 103 are provided in a portion facing the pillar 100 on the indoor side surface of the first face material 2. For example, the backing material 103 has a rectangular cross section. The backing material 103 is preferably made of a material having heat resistance, and is preferably a rock wool plate, for example. The backing material 103 is fixed to the first face material 2 by a fixing member. Examples of the fixing member include an adhesive, a screw, a nail, and a screw. In the fireproof structure of this embodiment, the steel frame 1 is provided between two backing materials 103. In this embodiment, a case where a backing material is used will be described. However, the backing material may be used as necessary.

  In the fireproof structure of the present embodiment, the fireproof covering material is held from the surface of the pillar 100 which is not opposed to the first face material 2 and is positioned substantially vertically to the vicinity of the back surface of the first face material 2. Means 106 are provided. More specifically, fireproof coating material holding means 106 is provided from one backing material 103 to the pillar 100, and fireproof coating material holding means 106 is provided from the other backing material 103 to the pillar 100. In the present embodiment, since the fireproof covering material holding means 106 is fixed to the backing material 103 provided on the back surface of the first face material 2, the fireproof covering material holding means 106 is attached to the back surface of the first face material 2. Not reached. That is, the fireproof covering material holding means 106 can be provided without being directly fixed to the back surface of the first face material 2. The fireproof covering material holding means 106 is, for example, a metal mesh member. As the fireproof covering material holding means 106, for example, a known member such as a wire lath or an expanded metal can be used. In the present embodiment, the fireproof covering material holding means 106 is fixed to the backing material 103 by a known fixing member such as a staple or a pin. The fireproof covering material holding means 106 is fixed to the column 100 by welding. Further, in the present embodiment, a rod-shaped skeleton 109 is provided between the backing material 103 and the pillar 100 and the fireproof covering material holding means 106. Thereby, the fireproof covering material holding means 106 can be strongly stretched.

  In the fireproof structure of the present embodiment, the outer surface of the pillar 100 excluding the face facing the space 104 between the pillar 100 and the first face member 2 is covered with the fireproof covering material 102 and the space 104 is closed. Is provided with a fireproof covering material 102. In particular, in this embodiment, the fireproof coating material 102 is provided along the fireproof coating material holding means 106. The fireproof covering material 102 is a member having fire resistance. Examples of the fireproof covering material 102 include rock wool, an inorganic spray material, an inorganic mat material, an inorganic sheet material, and an inorganic board material.

  In the present embodiment, the fireproof structure using the fireproof covering material holding means 106, the strength bone 109 and the like is described. However, the present invention is not limited to this, and the fireproof covering material 102 itself has a self-supporting property. It is not necessary to use the covering material holding means 106, the strength bone 109, and the like.

  Furthermore, in the fireproof structure of the present embodiment, a heat insulating material 105 is provided on the indoor side of the first face member 2. In this embodiment, a heat insulating material 105 is provided on the indoor side of the backing material 103 inside the space 104, and a heat insulating material 105 is provided between the steel frame 1 and the fireproof covering material holding means 106 on the outside of the space 104. It has been. The heat insulating material 105 is, for example, rock wool or glass wool. In the present embodiment, the heat insulating material 105 is provided on both the inside and the outside of the space 104 on the indoor side of the first face member 2, but is not limited thereto. 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 according to the present embodiment has the above-described configuration, thereby providing the following effects.

  In the fireproof structure of the present embodiment, since the face material such as gypsum board is not provided on the indoor side of the steel frame 1, the space between the outer wall 101 and the column 100 is larger than when the face material is provided on the indoor side of the steel frame 1. The space is big. For this reason, it is easy to construct the fireproof covering material 102 on the pillar 100.

  In the present 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 close the space 104. Thereby, while being able to ensure the fire resistance of the pillar 100, it is easier to construct the fire resistant coating material than when covering all the surfaces of the pillar 100 with the fire resistant coating material.

  Further, since the space 104 between the pillar 100 and the first face material 2 is large, the heat insulating material 105 can be provided on the indoor side of the first face material 2. The heat insulating material 105 can further improve the heat insulating property of the building.

  In the fireproof structure of the present embodiment, as shown in FIG. 17, one steel frame 1 is provided between two backing materials 103, but is not limited thereto. For example, as shown in FIG. 19A, the steel frame 1 may not be provided between the two backing materials 103. As shown in FIG. 19B, two adjacent steel frames 1 may be provided between the two backing materials 103.

  The fireproof structure of this embodiment can also be applied to the corners of buildings. A corner is a corner formed by two outer walls of a building. Therefore, as shown in FIG. 20, the projecting corner of the present embodiment includes a first outer wall 107 and a second outer wall 108 that is adjacent to the first outer wall 107 in a direction intersecting the first outer wall 107. Further, an L-shaped corner outer wall material 50 is provided at the corner where the first outer wall 107 and the second outer wall 108 meet. The corner outer wall material 50 is abutted against the first outer wall 107 and the second outer wall 108 via the joiner 14 (see FIG. 20). Sealing 17 is provided at the abutting portion between the first outer wall 107 and the corner outer wall member 50 and the abutting portion between the second outer wall 108 and the corner outer wall member 50. The corner outer wall member 50 is fixed to the second face member 3 via the fastener 6. In the present embodiment, two adjacent steel frames 1 are provided on the indoor side at the corner where the first outer wall 107 and the second outer wall 108 meet.

  As shown in FIG. 20, in the fireproof structure at the protruding corner, the column 100 faces the first face material 2 of the first outer wall 107 and the first face material 2 of the second outer wall 108. One backing material 103 is fixed to a portion of the first outer wall 107 facing the pillar 100 on the indoor side surface of the first face material 2. The other backing material 103 is fixed to the portion of the second outer wall 108 facing the pillar 100 on the indoor side surface of the first face material 2. That is, the two backing materials 103 are opposed to different surfaces of the pillar 100, respectively.

  Also in the fireproof structure at the projecting corner, the fireproof covering material is held from the surface of the column 100 which is not opposed to the first face material 2 and is positioned substantially vertically to the vicinity of the back surface of the first face material 2 Means 106 are provided. Specifically, as shown in FIG. 20, fireproof coating material holding means 106 is provided from one backing material 103 to the pillar 100, and fireproof coating material holding means 106 is provided from the other backing material 103 to the pillar 100. It has been. Further, a rod-shaped skeleton 109 is provided between the backing material 103 and the column 100 and the fireproof covering material holding means 106.

  In the fireproof structure at the corner, the outer surface of the pillar 100 excluding the face facing the space 104 between the pillar 100 and the first face member 2 of the first outer wall 107 and the first face member 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 close the space 104. In particular, in this embodiment, the fireproof coating material 102 is provided along the fireproof coating material holding means 106. (See FIG. 20).

  Since the pillar 100 located at the protruding corner faces the first outer wall 107 and the second outer wall 108, a plaster 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 so, it is difficult to apply the fireproof coating material to the pillar 100. However, in this embodiment, a gypsum board or the like is not provided on the indoor side of the steel frame 1 in both the first outer wall 107 and the second outer wall 108 constituting the protruding corner. For this reason, the space between the pillar 100 and the 1st outer wall 107 and the 2nd outer wall 108 is large, and it is easy to construct the fireproof covering material 102 to the pillar 100 by this.

  In the present embodiment, the outer surface of the pillar 100 excluding the surface facing the space 104 is covered with the fireproof coating material 102, and the fireproof coating material 102 is provided so as to close the space 104. Thereby, while being able to ensure the fire resistance of the pillar 100 located in the protruding corner, it is easier to apply the fire-resistant coating material than when covering all the surfaces of the pillar 100 positioned in the protruding corner with the fire-resistant coating material.

  Moreover, also in the fireproof structure of a corner, the heat insulating material 105 may be provided in the indoor side of the 1st face material 2, and it does not need to be provided.

DESCRIPTION OF SYMBOLS 1 Steel frame 2 1st surface material 25,26 Vertical side 27,28 Horizontal side 3 2nd surface material 35,36 Vertical side 37,38 Horizontal side 4 Surface material 5 Outer wall material 100 Column 102 Fireproof covering material 104 Space 105 Thermal insulation Material 106 Fireproof covering material holding means 107 First outer wall 108 Second outer wall

Claims (7)

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 left and right at a predetermined interval,
A face material having fire resistance performance provided on the outdoor side of the steel frame along the plurality of steel frames,
An outer wall material provided on the outdoor side of the face material;
With
The outer surface of the column excluding the surface facing the space between the column and the face material is covered with a fireproof coating material,
A fireproof structure in which a fireproof covering material is provided so as to close a space between the pillar and the face material. The steel frame is a lightweight steel frame;
The face material is provided on the outdoor side of the steel frame, the first face material is rectangular in front view, and the second face material is rectangular in front view provided on the outdoor side of the first face material. And comprising
The outer wall material is rectangular in front view,
Two vertical sides of the first face material are on the outdoor side of the steel frame,
Two vertical sides of the second face material are on the outdoor side of the steel frame different from the steel frame on which the vertical side of the first face material is located,
The two lateral sides of the second face material and the two lateral sides of the first face material are shifted in the vertical direction,
The two long sides of the outer wall material constructed in the laterally long direction do not overlap with the two lateral sides of the first face material and the two lateral sides of the second face material in the thickness direction, and are fasteners. The fireproof structure according to claim 1, wherein the fireproof structure is fixed to the steel frame via an iron.   The fireproof structure according to claim 2, wherein the first face material and the second face material are gypsum boards.   The fireproof structure according to claim 2, wherein at least the second face material is a calcium silicate plate. The outer wall includes a first outer wall that forms an exit corner and a second outer wall that is adjacent to the first outer wall 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 column excluding the surface facing the space between the pillar and the face material on the first outer wall and the face material on the second outer wall is covered with a fireproof coating material,
The fireproof covering material is provided so that the space between the pillar and the face material in the first outer wall and the face material in the second outer wall may be closed. Fireproof structure Fireproof coating material holding means is provided across the back surface of the face material from the surface of the pillar that is not opposed to the face material and is positioned substantially vertically,
The fireproof structure according to any one of claims 1 to 5, wherein a fireproof coating material is provided on the fireproof coating material holding means.   The fireproof structure as described in any one of Claims 1 thru | or 6 with which the heat insulating material is provided in the indoor side of the said face material.

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