Wall structure

Abstract

To provide a wall structure in which a fire resistive covering material covering a column or a beam is easy to visually recognize.SOLUTION: A wall structure 1A includes a column 5 or a beam 1, a face material 2 arranged on the outdoor side of the column 5 or the beam 1, a fire resistive covering material 3, and a waterproof material 4. The fire resistive covering material 3 covers at least an indoor side surface 6 of the column 5 or the beam 1. The waterproof material 4 is provided at a position facing the column 5 or the beam 1 on an indoor side surface 7 of the face material 2. The waterproof material 4 may be filled between the column 5 or the beam 1 and the face material 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a wall structure, and more particularly to a wall structure having a fire-resistant covering material provided on columns or beams. [Background technology]

[0002] Patent Document 1 discloses a fire-resistant covering structure. This fire-resistant covering structure includes an inorganic fire-resistant covering material that is continuously provided from the outside of a steel column or steel beam that is arranged facing and adjacent to a wall to the surface of the wall. In addition, an organic coating material is provided on the outside of the inorganic fire-resistant covering material. This organic coating material is provided to suppress the transmission of water vapor from the outside to the inside of the inorganic fire-resistant covering material, and is formed of a coating material that has a higher moisture permeability resistance than the inorganic fire-resistant covering material. The organic coating material is, for example, an ultra-fast-curing urethane waterproofing material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-84413 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned fire-resistant covering structure, since the outside of the fire-resistant covering material is covered with an organic coating material, it is not possible to visually check whether the fire-resistant covering material is completely covering the necessary parts of the columns or beams, and if it is not covered, there is a risk that the fire resistance will be compromised.

[0005] The present invention has been made in consideration of the above-mentioned reasons, and aims to provide a wall structure in which fire-resistant covering material covering columns or beams is easily visible. [Means for solving the problem]

[0006] A wall structure according to one aspect of the present invention includes a column or beam, a facing material arranged on the outdoor side of the column or beam, a fire-resistant covering material, and a waterproofing material. The fire-resistant covering material covers at least the indoor side of the column or beam. The waterproofing material is provided on the indoor side of the facing material at a position facing the column or beam. Effect of the Invention

[0007] According to the present invention, the fire-resistant covering material covering the indoor side of the pillars or beams is less likely to be covered with a waterproofing material, and the fire-resistant covering material covering the pillars or beams is easily visible. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view showing a first embodiment of a wall structure according to the present invention. [Diagram 2] FIG. 2 is a cross-sectional view showing the second embodiment of the above. [Diagram 3] FIG. 3 is a cross-sectional view showing the third embodiment of the above. [Figure 4] FIG. 4 is a cross-sectional view showing the fourth embodiment of the above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] 1. Overview The wall structures 1A to 4A of this embodiment include a column 5 or a beam 1, a facing material 2, a fire-resistant covering material 3, and a waterproofing material 4. The facing material 2 is disposed on the outdoor side of the column 5 or the beam 1. The fire-resistant covering material 3 covers at least an indoor side surface 6 of the column 5 or the beam 1. The waterproofing material 4 is provided on an indoor side surface 7 of the facing material 2 in a position facing the column 5 or the beam 1.

[0010] In the wall structures 1A to 4A of this embodiment, the fire-resistant covering material 3 is provided at a position covering the indoor side surface 6 of the column 5 or beam 1, and the waterproofing material 4 is provided at a position on the indoor side surface 7 of the facing material 2 facing the column 5 or beam 1. Therefore, the fire-resistant covering material 3 can be uncovered or barely covered by the waterproofing material 4, and the appearance of the fire-resistant covering material 3 can be easily visually confirmed. Therefore, it can be easily confirmed whether or not the fire-resistant covering material 3 has any part that impairs the fire resistance performance (for example, a damaged part such as a chip or crack).

[0011] Furthermore, since the waterproofing material 4 is provided at a position facing the pillars 5 or beams 1 on the indoor side surface 7 of the facing material 2, it is possible to reduce the amount of water passing between the pillars 5 or beams 1 and the facing material 2. Therefore, even if the waterproofing material 4 is not provided on the outer surface of the fire-resistant covering material 3, the waterproofing is less likely to decrease at the positions of the pillars 5 or beams 1.

[0012] In this embodiment, the direction in which the beam 1 extends is the left-right direction, and the direction in which the column 5 extends is the up-down direction. The left-right direction and the up-down direction are perpendicular to each other. The direction perpendicular to both the left-right direction and the up-down direction is the front-to-rear direction. The front-to-rear direction is perpendicular to the main surface of the panel 2. Note that "perpendicular" means intersecting at a right angle, but it also includes not only intersecting at a right angle, but also intersecting at a slightly deviated angle from a right angle (almost a right angle).

[0013] 2.Details (Embodiment 1) As shown in FIG. 1, a wall structure 1A of this embodiment is an exterior wall structure of a building, and includes a beam 1, a facing material 2, a fire-resistant covering material 3, and a waterproof material 4.

[0014] <beam> The beam 1 is a member that constitutes the framework of a building. In this embodiment, the building is of steel frame construction, and the beam 1 is made of H-shaped steel. Therefore, the beam 1 has a web 10, an upper flange 11, and a lower flange 12. A floor section 8 is provided above the beam 1.

[0015] The floor section 8 is formed, for example, of a concrete plate, and is placed on the upper flange 11 of the beam 1. The front end surface of the floor section 8 faces the indoor side surface 7 of the facing material 2. A blocking filler material 80 is provided between the front end surface of the floor section 8 and the indoor side surface 7 of the facing material 2.

[0016] The blocking filler 80 fills the gap between the front end face of the floor section 8 and the indoor side surface 7 of the facing material 2, and is formed of, for example, fire-resistant rock wool. The blocking filler 80 can be provided over the entire length of the floor section 8 in the left-right direction. The indoor side surface 7 of the facing material 2 is the main surface (rear surface) facing rearward when viewed from the facing material 2.

[0017] <Surface material> The face material 2 is disposed on the outdoor side of the beam 1. Here, the outdoor side means the front side as viewed from the beam 1. The face material 2 is composed of plate members perpendicular to the front-to-rear direction. The face material 2 has a base surface material 21 and an exterior wall material 22. The base surface material 21 is disposed behind the exterior wall material 22. The outdoor side (front surface) of the base surface material 21 and the indoor side (rear surface) of the exterior wall material 22 face each other in the front-to-rear direction.

[0018] The base surface material 21 is a member that uses a plate member such as gypsum board, and can suppress the temperature rise on the indoor side. The base surface material 21 can be configured by arranging multiple plate members in the vertical and horizontal directions. The base surface material 21 may also be configured by stacking multiple (e.g., two) plate members in the front-to-back direction.

[0019] The base surface material 21 is fixed to vertical furring strips 23. The vertical furring strips 23 are members that support the face material 2, and are formed to extend in the vertical direction. The vertical furring strips 23 may be made of, for example, C-shaped steel (C-shaped channel material). The vertical furring strips 23 are arranged on the indoor side (rear) of the base surface material 21, and the base surface material 21 is fixed to the vertical furring strips 23 with fasteners 24 such as screws or nails. The vertical furring strips 23 are fixed to the beam 1 by receiving members 25.

[0020] The receiving member 25 is a member extending in the front-rear direction, and may be, for example, an L-shaped steel. The rear end of the receiving member 25 is fixed to the upper surface of the lower flange 12 in front of the web 10 of the beam 1 by welding or the like. The front end of the receiving member 25 is fixed to the side surface (right or left surface) of the vertical furring strip 23 by welding or the like. In this way, the vertical furring strip 23 is supported by the beam 1 via the receiving member 25.

[0021] The exterior wall material 22 is a surface material that constitutes the outdoor side (front) of the exterior wall structure, and for example, a substantially flat ceramic siding material can be used. A plurality of exterior wall materials 22 are arranged in the vertical and horizontal directions on the outdoor side (front) of the base surface material 21. The exterior wall materials 22 are fixed to the base surface material 21 and the vertical furring strips 23 by fasteners 26. The upper and lower ends of the exterior wall material 22 are engaged and supported by the fasteners 26. A plurality of fasteners 26 are arranged on the outdoor side (front) of the base surface material 21, and are fixed to the base surface material 21 and the vertical furring strips 23 by fasteners 27 such as screws or nails. The fasteners 26 may be fixed only to the base surface material 21 or only to the vertical furring strips 23.

[0022] A moisture-permeable waterproof sheet 28 is disposed over the entire exterior side (front side) of the base surface material 21. A breathable layer 29 is provided between the exterior wall material 22, the base surface material 21, and the moisture-permeable waterproof sheet 28. The front-to-rear dimension of the breathable layer 29 is approximately equal to the front-to-rear dimension of the fastener 26. The fastener 26 may be a long member (metal fitting) extending in the left-to-right direction, or a short member (metal fitting) with a short dimension in the left-to-right direction.

[0023] <Fireproof covering material> The fireproof covering material 3 is a member for improving the fireproof performance of the beam 1 and the wall structure 1A around it. The fireproof covering material 3 can be formed by spraying rock wool. Spraying rock wool is a mixture (slurry) of rock wool granular cotton and cement, and the fireproof covering material 3 can be formed by spraying this mixture in layers on the outer surface of the beam 1 with a spraying machine and then drying and hardening it. The fireproof covering material 3 can also be formed by wrapping material. The wrapping material can be a sheet material containing a non-combustible material such as rock wool arranged on the outer surface of the beam 1 to form the fireproof covering material 3. Alternatively, the fireproof covering material 3 may be formed by using a calcium silicate board or fireproof paint.

[0024] The fire-resistant covering material 3 covers at least the indoor side surface 6 of the beam 1. Specifically, on the indoor side (rear) of the web 10 of the beam 1, it can be provided on the rear end surface and underside of the upper flange 11, the rear surface of the web 10, and the upper surface and rear end surface of the lower flange 12. The fire-resistant covering material 3 can also be provided on the underside of the beam 1 and below the receiving member 25.

[0025] When the fireproof covering material 3 is provided below the receiving member 25, a reinforcing bar 30 and a lath 31 are used. The reinforcing bar 30 is made of a rod-shaped reinforcing bar and is provided between the indoor side surface 7 of the facing material 2 and the beam 1. The rear end of the reinforcing bar 30 is joined to the lower surface of the lower flange 12 of the beam 1 by welding or the like. The front end of the reinforcing bar 30 is in contact with the indoor side surface 7 of the facing material 2. A plurality of reinforcing bars 30 are provided at predetermined intervals in the left-right direction. The lath 31 is formed of a wire mesh or the like and is provided below the reinforcing bar 30. The lath 31 is joined to the reinforcing bar 30 and is provided with a length substantially equal to the overall length of the beam 1 in the left-right direction. The fireproof covering material 3 can be formed by spraying rock wool onto the lower surface of the lath 31.

[0026] In this way, the fire-resistant covering material 3 can be formed continuously from the underside of the floor portion 8 to the indoor side surface 7 of the facing material 2. The fire-resistant covering material 3 is provided with a length that is approximately the same as the overall length of the beam 1 in the left-right direction. The fire-resistant covering material 3 covers the outer surface of the beam 1 other than the outdoor side surface 13 of the beam 1 (the front surface facing the indoor side surface 7 of the facing material 2), thereby improving the fire resistance of the beam 1. The fire-resistant covering material 3 covers the underside of the space 9 between the outdoor side surface 13 of the beam 1 and the indoor side surface 7 of the facing material 2, making it difficult for flames to penetrate into the space 9 in the event of a fire and suppressing the temperature within the space 9, so that the fire resistance of the wall structure 1A can be ensured even if the fire-resistant covering material 3 is not formed on the outdoor side surface 13 of the beam 1.

[0027] The thickness of the fire-resistant covering material 3 can be set to 20 to 70 mm, but is not limited to this.

[0028] <Waterproof material> The waterproofing material 4 is formed in a layer on the indoor side surface 7 of the facing material 2 (the rear surface of the base surface material 21), and is a material that is less permeable to moisture such as humidity than the facing material 2 and the fire-resistant covering material 3. The waterproofing material 4 is also a material that has higher thermal insulation properties than the facing material 2, the beam 1, and the fire-resistant covering material 3. Furthermore, the waterproofing material 4 is a material that may also be non-flammable. The waterproofing material 4 can be formed from a resin foam such as polyurethane foam.

[0029] Polyurethane foam is a plastic foam of almost uniform thickness obtained by simultaneously carrying out a foaming reaction and a resinification reaction of a resin material obtained by stirring and mixing, for example, a polyol and a polyisocyanate with a blowing agent, a foam stabilizer, a catalyst, etc., and the obtained foam is at least semi-nonflammable in an exothermic heat test in accordance with ISO-5660.

[0030] Examples of the polyisocyanate compound include aromatic polyisocyanates, alicyclic polyisocyanates, and aliphatic polyisocyanates.

[0031] Examples of aromatic polyisocyanates include phenylene diisocyanate, tolylene diisocyanate, xylylene diisocyanate, diphenylmethane diisocyanate, dimethyldiphenylmethane diisocyanate, triphenylmethane triisocyanate, naphthalene diisocyanate, and polymethylene polyphenyl polyisocyanate.

[0032] Examples of the alicyclic polyisocyanate include cyclohexylene diisocyanate, methylcyclohexylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, and dimethyldicyclohexylmethane diisocyanate.

[0033] Examples of the aliphatic polyisocyanate include methylene diisocyanate, ethylene diisocyanate, propylene diisocyanate, tetramethylene diisocyanate, and hexamethylene diisocyanate.

[0034] In this embodiment, one or more types of polyisocyanate compounds can be used.

[0035] Examples of the polyol compound that is a curing agent for the urethane resin include polylactone polyol, polycarbonate polyol, aromatic polyol, alicyclic polyol, aliphatic polyol, polyester polyol, polymer polyol, and polyether polyol.

[0036] Examples of polylactone polyols include polypropiolactone glycol, polycaprolactone glycol, polyvalerolactone glycol, etc. Examples of polycarbonate polyols include polyols obtained by dealcoholization reaction of hydroxyl group-containing compounds such as ethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, octanediol, and nonanediol with diethylene carbonate, dipropylene carbonate, etc.

[0037] Examples of aromatic polyols include bisphenol A, bisphenol F, phenol novolac, and cresol novolac.

[0038] Examples of the alicyclic polyol include cyclohexanediol, methylcyclohexanediol, isophoronediol, dicyclohexylmethanediol, and dimethyldicyclohexylmethanediol.

[0039] Examples of the aliphatic polyol include ethylene glycol, propylene glycol, butanediol, pentanediol, and hexanediol.

[0040] Examples of polyester polyols include polymers obtained by dehydration condensation of polybasic acids and polyhydric alcohols, polymers obtained by ring-opening polymerization of lactones such as ε-caprolactone and α-methyl-ε-caprolactone, and condensates of hydroxycarboxylic acids and the above-mentioned polyhydric alcohols.

[0041] The waterproofing material 4 is provided over the entire indoor side surface 7 of the facing material 2. In other words, the waterproofing material 4 is provided both at a position on the indoor side surface 7 of the facing material 2 facing the beam 1 and at a position on the indoor side surface 7 of the facing material 2 other than the position facing the beam 1. The waterproofing material 4 is provided over a length approximately equal to the overall length of the beam 1 in the left-right direction.

[0042] The waterproofing material 4a, which is provided at a position on the indoor side surface 7 of the facing material 2 facing the beam 1, has its outdoor side surface (front surface) in close contact with the indoor side surface 7 of the facing material 2 at a position facing the beam 1. The waterproofing material 4a is also disposed within the space 9, with the indoor side surface (rear surface) of the waterproofing material 4a facing the outdoor side surface (front surface) 13 of the beam 1 with a gap between them. The upper end surface of the waterproofing material 4a is in close contact with the lower surface of the blocking filling material 80, and the lower end surface of the waterproofing material 4a is in close contact with the upper surface of the lath 31.

[0043] Waterproofing materials 4b, 4c are provided on the indoor side surface 7 of the facing material 2 except in a position facing the beam 1. One waterproofing material 4b is provided above the blocking filler material 80, and the outdoor side surface (front surface) of the waterproofing material 4b is in close contact with the indoor side surface 7 of the facing material 2. The lower end surface of the waterproofing material 4b is in close contact with the upper surface of the blocking filler material 80. The other waterproofing material 4c is provided below the fire-resistant covering material 3, and the outdoor side surface (front surface) of the waterproofing material 4c is in close contact with the indoor side surface 7 of the facing material 2. The upper end surface of the waterproofing material 4c is in close contact with the lower surface of the fire-resistant covering material 3.

[0044] The waterproofing material 4 can be formed by spraying the above-mentioned resin material containing polyol and polyisocyanate, etc., onto the indoor side 7 of the facing material 2 with a spraying machine. Here, the waterproofing material 4a is formed after the construction of the base surface material 21 and before the formation of the fire-resistant coating material 3. In this case, if the lath 31 is not yet installed, the nozzle of the spraying machine can be inserted from the lower opening of the space 9, and the resin material can be sprayed from this nozzle and sprayed onto the indoor side 7 of the base surface material 21. If the lath 31 is already installed, the nozzle of the spraying machine can be inserted into the space 9 through the mesh of the lath 31, and the resin material can be sprayed from this nozzle and sprayed onto the indoor side 7 of the base surface material 21. Note that the waterproofing material 4a may be formed even after the formation of the fire-resistant coating material 3 by inserting the nozzle of the spraying machine into the space 9 through the fire-resistant coating material 3, and the resin material can be sprayed from this nozzle and sprayed onto the indoor side 7 of the base surface material 21. The waterproofing material 4b is formed after the construction of the base surface material 21 and after the installation of the blocking filling material 80. The waterproofing material 4c is formed after the construction of the base surface material 21 and after the formation of the fire-resistant covering material 3.

[0045] The thickness (dimension in the front-rear direction) of the waterproof material 4 is, for example, not less than 15 mm and not more than 100 mm, but is not limited to this.

[0046] <Effects of this embodiment> In this embodiment, the indoor side surface 6 of the beam 1 is covered with the fire-resistant covering material 3, resulting in a wall structure 1A with excellent fire resistance. Furthermore, the waterproofing material 4 is provided at a position facing the beam 1 on the indoor side surface 7 of the facing material 2, so that the outer surface (lower surface and rear surface) of the fire-resistant covering material 3 is less likely to be covered with the waterproofing material 4, and the fire-resistant covering material 3 covering the beam 1 is easily visible. Furthermore, the waterproofing material 4 is provided at a position facing the beam 1 on the indoor side surface 7 of the facing material 2, so that it is possible to reduce the intrusion of water that has passed through the facing material 2 in the front-to-rear direction into the space 9, resulting in a wall structure 1A with excellent waterproofing.

[0047] <Modification> The first embodiment is merely one of various embodiments of the present invention. The first embodiment can be modified in various ways depending on the design and the like as long as the object of the present invention can be achieved.

[0048] In the first embodiment, the wall structure 1A is described as an exterior wall structure, but the wall structure 1A is not limited thereto, and may be an interior wall structure. In this case, the interior wall structure is a wall structure that requires waterproofing, such as a bathroom or a pool.

[0049] In the first embodiment, a steel-framed building is described, but the building is not limited to this and may be made of wood, in which case the beams 1, vertical furring strips 23 and columns may be made of wood.

[0050] In the first embodiment, the beam 1 is formed of an H-shaped steel, but is not limited thereto, and various types of shaped steel such as square steel pipes, C-shaped steel, L-shaped steel, and channel steel can be used.

[0051] In the first embodiment, the base surface material 21 is formed of a gypsum board, but the present invention is not limited to this, and structural plywood or the like can also be used.

[0052] In the first embodiment, the exterior wall material 22 is formed of a ceramic siding material, but is not limited thereto and may be formed of a siding material made of a wood board, a metal board, etc. When the facing material 2 is, for example, an ALC board or an EPC board, a waterproof material 4 may be provided on the indoor side thereof.

[0053] In the first embodiment, the exterior wall material 22 is fixed with fasteners 26, but this is not limiting and the material can be fixed using fasteners such as nails or screws.

[0054] In the first embodiment, the exterior wall material 22 is fixed in a horizontal manner, but this is not limited thereto, and it may be fixed in a vertical manner.

[0055] In the first embodiment, the waterproofing material 4 is provided on the entire indoor side surface 7 of the facing material 2, but the present invention is not limited to this. For example, the waterproofing material 4 can be provided only on the indoor side surface 7 of the facing material 2 at a position facing the outdoor side surface (front surface) 13 of the web 10 of the beam 1. In other words, the waterproofing material 4 does not have to be provided on the indoor side surface 7 of the facing material 2 above the blocking filling material 80 or below the lath 31.

[0056] In the first embodiment, the waterproof material 4 is formed of sprayed urethane foam, but is not limited to this and may be, for example, a waterproof sheet made of urethane foam.

[0057] In the first embodiment, the waterproofing material 4 is provided inside the vertical furring strips 23, but this is not limiting and the waterproofing material 4 does not have to be provided inside the vertical furring strips 23.

[0058] (Embodiment 2) A wall structure 2A according to this embodiment differs from the wall structure 1A according to the first embodiment in that a pillar 5 is provided instead of a beam 1. Hereinafter, the same components as those in the first embodiment may be denoted by the same reference numerals and the description thereof may be omitted as appropriate. The components described in the second embodiment can be applied in appropriate combination with the components (including the modified examples) described in the first embodiment.

[0059] As shown in FIG. 2, a wall structure 2A of this embodiment includes a pillar 5, a facing material 2, a fire-resistant covering material 3, and a waterproof material 4.

[0060] <Column> The pillars 5 are members that constitute the framework of the building, and are erected on a foundation (not shown). In this embodiment, the building is of steel frame construction, and the pillars 5 are made of shaped steel made of square steel pipes. The pillars 5 have an indoor side surface (rear surface) 6, side surfaces (left and right surfaces) 14, and an outdoor side surface (front surface) 15.

[0061] <Surface material> The facing material 2 is disposed on the outdoor side of the column 5. Here, the outdoor side means the front side as seen from the column 5. The facing material 2 is formed to have a base surface material 21 and an exterior wall material 22, similar to the first embodiment.

[0062] <Fireproof covering material> The fire-resistant covering material 3 is a member for improving the fire resistance of the wall structure 2A in and around the columns 5. The fire-resistant covering material 3 can be formed of sprayed rock wool.

[0063] The fire-resistant covering material 3 covers at least the indoor side surface 6 of the column 5. Specifically, the fire-resistant covering material 3 can be provided on the indoor side surface 6 and the side surface 14, which are the outer surfaces of the column 5 excluding the outdoor side surface 15. The fire-resistant covering material 3 can be provided over almost the entire length of the column 5 in the vertical direction. The fire-resistant covering material 3 is also provided so as to close both sides (right and left sides) of the space 90 between the outdoor side surface 15 of the column 5 and the indoor side surface 7 of the facing material 2.

[0064] When the fireproof covering material 3 is provided on the side of the space 90, a reinforcing bar 30 and a lath 31 are used. The reinforcing bar 30 is made of a rod-shaped reinforcing bar and is provided between the indoor side surface 7 of the facing material 2 and the column 5. The rear end of the reinforcing bar 30 is joined to the side surface 14 of the column 5 by welding or the like. The front end of the reinforcing bar 30 is in contact with the indoor side surface 7 of the facing material 2. A plurality of reinforcing bars 30 are provided at predetermined intervals in the vertical direction. The lath 31 is formed of a wire mesh or the like and is provided on the side of the reinforcing bar 30. The lath 31 is joined to the reinforcing bar 30 and is provided with a length substantially equal to the overall length of the column 5 in the vertical direction. The fireproof covering material 3 can be formed by spraying rock wool on the outer surface of the lath 31.

[0065] In this way, the fire-resistant covering material 3 can be formed continuously from the indoor side surface 6 of the column 5 to the indoor side surface 7 of the facing material 2. The fire-resistant covering material 3 is provided with a length that is approximately the same as the overall vertical length of the column 5. The fire-resistant covering material 3 covers the outer surface of the column 5 except for the outdoor side surface 15 of the column 5, thereby improving the fire resistance of the column 5. The fire-resistant covering material 3 also covers both sides of the space 90 between the outdoor side surface 15 of the column 5 and the indoor side surface 7 of the facing material 2, making it difficult for flames to penetrate into the space 90 in the event of a fire, and the temperature within the space 90 is suppressed, so that the fire resistance of the wall structure 2A can be ensured even if the fire-resistant covering material 3 is not formed on the outdoor side surface 15 of the column 5.

[0066] <Waterproof material> The waterproof material 4 is formed in a layer on the indoor side surface 7 of the facing material 2 (the rear surface of the base surface material 21) in the same manner as in embodiment 1. The waterproof material 4 is provided over the entire indoor side surface 7 of the facing material 2. In other words, the waterproof material 4 is provided both in a position on the indoor side surface 7 of the facing material 2 facing the pillar 5 and in a position on the indoor side surface 7 of the facing material 2 other than the position facing the pillar 5. The waterproof material 4 is provided over a length substantially equal to the total length of the pillar 5 in the vertical direction.

[0067] The waterproof material 4d, which is provided at a position on the indoor side surface 7 of the panel 2 facing the pillar 5, has its outdoor side surface (front surface) in close contact with the indoor side surface 7 of the panel 2 at a position facing the pillar 5. The waterproof material 4d is also arranged within the space 90, with the indoor side surface (rear surface) of the waterproof material 4d facing the outdoor side surface (front surface) 15 of the pillar 5 with a gap between them. The waterproof material 4d also covers the entire outer surface (rear surface and left or right surface) of the backing material 91 located within the space 90. The waterproof material 4d also covers a portion of the vertical furring strips 23 located within the space 90.

[0068] Waterproofing materials 4e, 4f are provided on the indoor side surface 7 of the facing material 2 except in the position facing the pillar 5. One waterproofing material 4e is provided on the left side of the space 90, and the outdoor side surface (front surface) of the waterproofing material 4e is in close contact with the indoor side surface 7 of the facing material 2. In addition, the right end portion of the waterproofing material 4 is in close contact with the outer surface of the fire-resistant covering material 3. The other waterproofing material 4f is provided on the right side of the space 90, and the outdoor side surface (front surface) of the waterproofing material 4f is in close contact with the indoor side surface 7 of the facing material 2. In addition, the left end portion of the waterproofing material 4 is in close contact with the outer surface of the fire-resistant covering material 3.

[0069] The waterproofing material 4 can be formed by spraying the above-mentioned resin material containing polyol and polyisocyanate, etc., onto the indoor side surface 7 of the facing material 2 with a spraying machine. Here, the waterproofing material 4d is formed after the construction of the base surface material 21 and before the formation of the fire-resistant coating material 3. In this case, if the lath 31 is not yet installed, the nozzle of the spraying machine can be inserted from the side opening of the space 90, and the resin material can be sprayed from this nozzle and sprayed onto the indoor side surface 7 of the facing material 2. If the lath 31 is already installed, the nozzle of the spraying machine can be inserted into the space 90 through the mesh of the lath 31, and the resin material can be sprayed from this nozzle and sprayed onto the indoor side surface 7 of the facing material 21. Note that the waterproofing material 4d may be formed even after the formation of the fire-resistant coating material 3 by inserting the nozzle of the spraying machine into the space 90 through the fire-resistant coating material 3, and the resin material can be sprayed from this nozzle and sprayed onto the indoor side surface 7 of the facing material 2. The waterproofing materials 4e and 4f are formed after the foundation surface material 21 is laid and after the fire-resistant covering material 3 is formed.

[0070] <Effects of this embodiment> In this embodiment, the indoor side surface 6 of the pillar 5 is covered with the fire-resistant covering material 3, resulting in a wall structure 2A with excellent fire resistance. Furthermore, the waterproofing material 4 is provided at a position facing the pillar 5 on the indoor side surface 7 of the facing material 2, so that the outer surface (rear surface and side surface) of the fire-resistant covering material 3 is less likely to be covered with the waterproofing material 4, and the fire-resistant covering material 3 covering the pillar 5 is easily visible. Furthermore, the waterproofing material 4 is provided at a position facing the pillar 5 on the indoor side surface 7 of the facing material 2, so that it is possible to reduce the amount of water that passes through the facing material 2 in the front-to-rear direction reaching the space 90, resulting in a wall structure 2A with excellent waterproofing.

[0071] <Modification> The second embodiment is merely one of various embodiments of the present invention. The second embodiment can be modified in various ways depending on the design and the like as long as the object of the present invention can be achieved.

[0072] In the second embodiment, the column 5 is formed of a square steel pipe, but is not limited to this, and various types of steel shapes such as H-shaped steel, C-shaped steel, L-shaped steel, channel steel, and round steel pipe can be used.

[0073] In the second embodiment, the waterproof material 4 is provided on the entire indoor side surface 7 of the facing material 2, but this is not limiting, and for example, the waterproof material 4 can be provided only on the indoor side surface 7 of the facing material 2 at a position facing the outdoor side surface (front surface) 15 of the pillar 5. In other words, the waterproof material 4 does not have to be provided on the indoor side surface 7 of the facing material 2 outside the space 90.

[0074] Furthermore, in the second embodiment, a form in which the backing material 91 is provided is shown, but the backing material 91 does not necessarily have to be provided.

[0075] (Embodiment 3) The wall structure 3A according to this embodiment differs from the wall structure 1A according to embodiment 1 in the configuration of the waterproofing material 4. Hereinafter, the same configurations as those in embodiment 1 or 2 may be denoted by common reference numerals and explanations thereof may be omitted as appropriate. The configuration described in embodiment 3 can be applied in appropriate combination with the configuration (including modified examples) described in embodiment 1 or 2.

[0076] As shown in Fig. 3, the wall structure 3A of this embodiment is formed in the same manner as in the first embodiment except for the waterproofing material 4. In this embodiment, the waterproofing material 4a located opposite the outdoor side surface 13 of the beam 1 is formed to fill the space 9. That is, the upper surface of the waterproofing material 4a is in close contact with the lower surface of the floor portion 8 and the blocking filling material 80 in the space 9, and the lower surface of the waterproofing material 4a is in close contact with the upper surface of the lath 31 in the space 9. In addition, the outdoor side surface (front surface) of the waterproofing material 4a is in close contact with the indoor side surface 7 of the facing material 2 in the space 9, and the indoor side surface (rear surface) of the waterproofing material 4a is in close contact with the outdoor side surface (front surface) 13 of the beam 1 in the space 9.

[0077] In the wall structure 3A of this embodiment, the waterproofing material 4a disposed in the space 9 can have larger front-rear and up-down dimensions than in the first embodiment. This makes it possible to reduce the amount of moisture and heat passing through the space 9, and to form the wall structure 3A having excellent thermal insulation and waterproof properties.

[0078] (Embodiment 4) The wall structure 4A according to this embodiment differs from the wall structure 2A according to embodiment 2 in the configuration of the waterproofing material 4. Hereinafter, the same configurations as those in embodiments 1 to 3 may be denoted by common reference numerals and descriptions thereof may be omitted as appropriate. The configuration described in embodiment 4 can be applied in appropriate combination with the configurations (including modified examples) described in embodiments 1 to 3.

[0079] As shown in Fig. 4, a wall structure 4A of this embodiment includes a column 5, a facing material 2, a fire-resistant covering material 3, and a waterproof material 4. In this embodiment, a waterproof material 4d located opposite the outdoor side surface 15 of the column 5 is formed to fill a space 90. That is, the sides (left and right sides) of the waterproof material 4d are in close contact with the inner surface of the lath 31 in the space 90. The outdoor side surface (front surface) of the waterproof material 4d is in close contact with the indoor side surface 7 of the facing material 2 and the outer surface of the backing material 91 in the space 90, and the indoor side surface (rear surface) of the waterproof material 4d is in close contact with the outdoor side surface (front surface) 15 of the column 5 in the space 90.

[0080] In the wall structure 4A of this embodiment, the waterproofing material 4d disposed in the space 90 can have larger front-rear and up-down dimensions than in the second embodiment. Therefore, the amount of moisture and heat passing through the space 90 can be reduced, and the wall structure 4A having excellent thermal insulation and waterproof properties can be formed.

[0081] (summary) As described above, the wall structures 1A to 4A of the first aspect include the pillar 5 or beam 1, the facing material 2 arranged on the outdoor side of the pillar 5 or beam 1, the fire-resistant covering material 3, and the waterproofing material 4. The fire-resistant covering material 3 covers at least the indoor side surface 6 of the pillar 5 or beam 1. The waterproofing material 4 is provided on the indoor side surface 7 of the facing material 2 in a position facing the pillar 5 or beam 1.

[0082] According to this embodiment, the fire-resistant covering material 3 covering the indoor side surface 6 of the column 5 or beam 1 is less likely to be covered by the waterproofing material 4, and the fire-resistant covering material covering the column 5 or beam 1 is easily visible. In addition, since the waterproofing material 4 is provided at a position facing the column 5 or beam 1 on the indoor side surface 7 of the facing material 2, the amount of water passing between the column 5 or beam 1 and the facing material 2 can be reduced.

[0083] The second embodiment is the wall structure 3A or 4A of the first embodiment, in which the waterproofing material 4 is filled between the pillar 5 or beam 1 and the facing material 2.

[0084] According to this embodiment, the amount of water passing between the pillar 5 or beam 1 and the panel 2 can be further reduced, making it more difficult for water to infiltrate into the interior of the building than the pillar 5 or beam 1.

[0085] The third aspect is the wall structures 1A to 4A of the first or second aspect, in which the waterproofing material 4 is provided on the entire indoor side surface 7 of the facing material 2.

[0086] According to this embodiment, water is less likely to infiltrate into the interior of the building than the surface material 2 at positions other than between the pillar 5 or beam 1 and the surface material 2. [Explanation of symbols]

[0087] 1 beam 2. Surface material 3 Fireproof coating 4 Waterproof material 5 Pillars 6. Indoor side of pillar or beam 7 Indoor side of the surface material 1A wall structure 2A wall structure 3A wall structure 4A wall structure

Claims

1. A structure comprising a column or beam, a facing material arranged on the outdoor side of the column or beam, a fireproof covering material, and a waterproof material; The fire-resistant covering material covers at least the indoor side of the column or the beam, The waterproof material is provided at a position facing the column or the beam on the indoor side of the surface material, wall structure.

2. The waterproof material is filled between the column or beam and the surface material. The wall structure of claim 1 .

3. The waterproof material is provided on the entire indoor side of the facing material. A wall structure according to claim 1 or 2.

Images