JP2013113033A - Outside heat insulation fire resistant structure of exterior wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outside heat insulation fire resistant structure of an exterior wall, capable of effectively imparting excellent heat insulation property and superior fire resistant structure against fire from an outdoor side to the exterior wall constructed by a framework wall construction method.SOLUTION: An outside heat insulation fire resistant structure 10 used for a wooden house building constructed by a framework wall construction method comprises: a structural face material 13 mounted on the outdoor side of jambs 12; a first outer covering substrate material 14; a heat insulation material 15; a first waterproof paper sheet 16; a plurality of vertical furring strips 17; a first aluminum foil layer 18; a second outer covering substrate material 19; a second aluminum foil layer 20; a third outer covering substrate material 21; a second waterproof paper sheet 22; and a lath mortar layer 23. Swell suppression members 25 are arranged so that each swell suppression member 25 is disposed in a space between two adjacent vertical furring strips 17 to suppress the heat insulation material 15 from swelling by heat in a fire disaster. Thus, vertical vent layers 24 formed between the first waterproof paper sheet 16 and the first aluminum foil layer 18 can be held when a fire occurs by interposing the vertical furring strips 17 therebetween.

Description

  The present invention relates to an outer wall heat insulating fireproof structure of an outer wall, and more particularly to an outer wall heat insulating fireproof structure of an outer wall used for an outer wall of a wooden house building by a frame wall construction method.

  The frame wall construction method is a method of building a frame of a building mainly by nailing without using complicated joints and joints, while reducing the types of cross-sectional dimensions of the wood used. The outer wall of a residential building generally has a plurality of vertical frames erected at a predetermined interval from a lower frame installed on a base or a beam member, and the upper ends of these vertical frames are connected to the head (upper frame). ) To form a frame structure which is a framework, and a wall base material and a wall finishing material are attached to the outdoor side surface and the indoor side surface.

  In addition, as a partition wall by the frame wall construction method, heat insulation performance is improved by filling and arranging each of the plurality of hollow regions inside the outer wall divided by the lower frame, the vertical frame and the head connection, and fire. Sometimes it is difficult to burn, by attaching the first reinforced gypsum board, the aluminum sheet, and the second reinforced gypsum board to the both sides of the frame, preferably Article 2 of the Building Standard Law Enforcement Order A fire-resistant wooden wall has been developed so that the fire-resistant performance as the fire-resistant structure specified in No. 7 can be obtained (for example, see Patent Document 1). Furthermore, in patent document 1, when using the fireproof wooden wall of the said patent document 1 as an outer wall of a building, only a 1st reinforcement | strengthening gypsum board, an aluminum sheet, and 2nd on the surface of the indoor side of a frame assembly It is described that a reinforced gypsum board may be attached and an outer wall material or the like may be attached to the surface on the outdoor side of the frame assembly.

Japanese Patent No. 3673517

  On the other hand, when the temperature difference between the indoor side and the outdoor side is large, for example, the outer wall by the frame wall construction method fills and arranges the heat insulating material in a plurality of hollow regions partitioned by the lower frame, vertical frame, and head connection of the frame In the case of the so-called filled heat insulation specification, since the heat insulating material is divided at the part of the vertical frame, the part of the vertical frame becomes a thermal bridge and heat is easily transferred between the indoor side and the outdoor side. . For this reason, it has been studied to adopt a heat insulation structure with a so-called outer heat insulation that improves the heat insulation function by continuously attaching the heat insulation material without dividing it to the outdoor side of the frame assembly. .

  In addition, it is necessary to prevent external fires from entering the indoor side in addition to preventing the fire generated on the indoor side from spreading to the outdoor side. There has been a demand for an outdoor side portion of a frame assembly (framework) provided with a heat insulation structure by heat insulation to have a structure having a considerable fire resistance.

  An object of the present invention is to provide an outer wall heat insulating fireproof structure for an outer wall capable of effectively imparting an excellent heat insulating performance and an excellent fire resistant performance against a fire from the outdoor side to an outer wall by a frame wall construction method. And

  The present invention relates to a heat insulating and fireproof structure for an outer wall used in a wooden house building by a frame wall construction method, a structural face material attached to a surface on the outdoor side of a vertical frame, and a store of the structural face material A first exterior base material attached to the outer surface, a heat insulating material attached to the outdoor side surface of the first exterior base material, and a first waterproof paper attached to the outdoor side surface of the heat insulating material; , A plurality of vertical trunk rim members attached to the outdoor side surface of the first waterproof paper at a predetermined pitch and spaced laterally, and a first aluminum attached to the outdoor side surface of the vertical trunk rim material A foil layer; a second exterior base material attached to the outdoor side surface of the first aluminum foil layer; a second aluminum foil layer attached to the outdoor side surface of the second exterior base material; (2) a third exterior base material attached to the surface of the aluminum foil layer on the outdoor side, and the third exterior base material A plurality of second waterproof papers attached to the outer surface and a lath mortar layer constructed on the outdoor side surface of the second waterproof papers, and a plurality of papers are attached at a predetermined pitch and spaced laterally. The vertical body rim is provided in the space between the vertical body rim members formed, and suppresses the expansion of the heat insulating material to the first aluminum foil layer side due to heat at the time of the fire. Outer insulation of the outer wall to which the bulging restraining member is attached, which can hold the longitudinal ventilation layer formed between the first waterproof paper and the first aluminum foil layer by interposing a material The above object is achieved by providing a fireproof structure.

  And as for the outer-layer heat insulation fireproof structure of the outer wall of this invention, it is preferable that the said 1st aluminum foil layer and the said 2nd aluminum foil layer are formed using the aluminum glass fiber cloth.

  Moreover, it is preferable that the outer-side heat insulation fireproof structure of the outer wall of this invention is reinforced by the glass fiber net in the outdoor side part of the said lath mortar layer.

  Furthermore, in the outer wall heat insulating fireproof structure of the outer wall of the present invention, it is preferable that the first exterior base material, the second exterior base material, and the third exterior base material are made of slag gypsum plates.

  Furthermore, in the outer wall heat insulating fireproof structure of the outer wall of the present invention, it is preferable that the heat insulating material is a phenol foam heat insulating plate.

  Further, the outer wall heat insulation and fireproof structure of the outer wall of the present invention includes an interior surface material attached to the indoor side surface of the vertical frame, and an interior material attached to the indoor side surface of the interior surface material. Preferably, it is configured.

  Further, in the outer wall heat insulating fireproof structure of the outer wall according to the present invention, it is preferable that the interior material has a two-layer structure including a lower interior material made of reinforced gypsum board and an upper interior material made of reinforced gypsum board. .

  According to the heat insulation and fireproof structure of the outer wall of the present invention, excellent heat insulation performance and excellent fire resistance against fire from the outdoor side can be effectively imparted to the outer wall by the frame wall construction method.

1 is a schematic perspective view illustrating a configuration of an outer wall heat insulating fireproof structure according to a preferred embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The structure of the outer wall heat insulation fireproof structure of the outer wall which concerns on preferable one Embodiment of this invention is demonstrated, (a) is horizontal direction schematic sectional drawing and A part enlarged view, (b) is vertical direction schematic sectional drawing. . BRIEF DESCRIPTION OF THE DRAWINGS The construction condition of the outer wall heat insulation fireproof structure which concerns on preferable one Embodiment of this invention is demonstrated, (a) is horizontal direction schematic sectional drawing, (b) is vertical direction schematic sectional drawing.

  The outer wall heat insulation and fireproof structure 10 according to a preferred embodiment of the present invention shown in FIG. 1 is employed for imparting excellent heat insulation performance and fire resistance performance to an outer wall by a frame wall construction method. That is, the outer heat insulating fireproof structure 10 of the present embodiment is a fireproof structure that can obtain the fireproof performance prescribed in the Building Standard Law Enforcement Ordinance Article 7 No. 7, for example, on the outer wall by the conventional wooden frame wall construction method. In the case of filling, heat insulation is filled in the hollow area between the internal frameworks, and various fireproof structures have been studied for those with a thermal insulation specification, but the insulation is divided into the outdoor part of the framework In the case of the outer heat insulation specification that was continuously attached without letting it be done, it was made in view of the fact that the fireproof structure with the fireproof performance prescribed in Article 2, Item 7 of the Building Standards Law Enforcement Ordinance was not considered. Is.

  Further, the outer heat insulating and fireproof structure 10 of the present embodiment is a framework in order to supplement the fixing strength of the metal fitting for fixing the heat insulating material for the outer covering or to reinforce the fire resistance performance of the heat insulating material for the outer covering. In addition to disposing a non-combustible material between the frame assembly and the heat insulating material for the outer layer, for example, in order to ensure fire resistance performance for 1 hour, simply increasing the thickness of the mortar layer as the exterior material Since the heat shielding performance will be inadequate, multiple layers of non-combustible plates will be placed, an air layer will be formed, and the function of the formed air layer will not be damaged in the event of a fire. The predetermined fire resistance specified in Article 2, Item 7 can be secured in a stable state.

  And the outer wall heat insulation fireproof structure 10 of the outer wall of this embodiment is a heat insulation fireproof structure of the outer wall 11 used for the wooden house building by a frame wall construction method, As shown in FIGS. A structural face member 13 attached to the outdoor side surface of the vertical frame 12 which is a structural member of the framework (frame assembly), and a first exterior base material 14 attached to the outdoor side surface of the structural face member 13; The heat insulating material 15 attached to the outdoor side surface of the first exterior base material 14, the first waterproof paper 16 attached to the outdoor side surface of the heat insulating material 14, and the outdoor side surface of the first waterproof paper 16 A plurality of vertical trunk rim members 17 attached to each other at a predetermined pitch in the horizontal direction, a first aluminum foil layer 18 attached to a surface of the vertical trunk rim member 17 on the outdoor side, and a first aluminum foil layer A second exterior base material 19 attached to the outdoor side surface of the 18th; The second aluminum foil layer 20 attached to the outdoor side surface of the exterior base material 19, the third exterior base material 21 attached to the outdoor side surface of the second aluminum foil layer 20, and the third exterior base material 21. The 2nd waterproof paper 22 attached to the surface of the outdoor side, and the lath mortar layer 23 constructed on the outdoor surface of the 2nd waterproof paper 22 are comprised. In addition, in the space between the vertical body rim members 17 that are attached at a predetermined pitch and spaced apart in the horizontal direction, preferably provided extending in the vertical direction, the heat insulating material 17 due to heat at the time of fire By suppressing the bulging to the first aluminum foil layer 18 side, a vertical trunk formed between the first waterproof paper 16 and the first aluminum foil layer 18 by interposing the vertical body rim material 17 in the event of a fire. A bulging restraining member 25 is attached so that the directional ventilation layer 24 can be held.

  In addition, the outer wall heat insulation fireproof structure 10 of the outer wall of the present embodiment includes an interior surface material 26 attached to the indoor side surface of the vertical frame 12 and an interior material 27 attached to the indoor side surface of the interior surface material 26. The interior material 27 has a two-layer structure including a lower interior material 27a made of reinforced gypsum board and an upper interior material 27b made of reinforced gypsum board.

  In this embodiment, the vertical frame 12 is a rod-like member having a cross-sectional dimension of, for example, 38 mm × 89 mm, which is known as wood for a frame wall construction method. For example, the vertical frame 12 is placed on the beam member 30 through a floor base material such as plywood. From the installed lower frame 31 or from the lower frame 31 installed on the base via a floor base material such as plywood, a plurality of these are arranged upright with a pitch of 455 mm, for example. By connecting the upper ends of the vertical frames 12 together by a head joint (upper frame) 32 (see FIG. 2B), a frame assembly that is a framework of the outer wall 11 together with the lower frame 31 and the head joint (upper frame) 32 33 is formed. In addition, in the part between the vertical frames 12 arranged upright adjacent to each other, anti-slip 34 that extends in the horizontal direction by joining both ends to the side surfaces of the vertical frames 12 on both sides is appropriately disposed. Thereby, the frame assembly 33 is effectively reinforced.

In the present embodiment, the structural face material 13 attached to the outdoor side surface of the vertical frame 12 is a structural plywood conforming to the Japanese Agricultural Standards, for example, having a thickness of 9 mm and a density of 0.55 g / cm ^3. Can be used. Further, as the structural face material 13, for example, a structural plywood of 9 mm or more, a structural panel having a thickness of 9 mm or more, a particle board having a thickness of 9 mm or more, or a sieving board having a thickness of 12 mm or more. Or a hard wood chip cement board with a thickness of 12 to 25 mm, a pulp cement board with a thickness of 9 mm or more, a flexible board with a thickness of 9 mm or more, a calcium silicate board with a thickness of 9 mm or more, a thickness of 9 mm or more Pulp / calcium silicate mixed cement board, cement board such as double-sided acrylic resin coated pulp / silicate mixed cement board with thickness of 9mm or more, volcanic glassy multilayer board with thickness of 9mm or more, thick A gypsum board having a length of 12 mm or more can be used.

  The structural face material 13 is, for example, an iron round nail as a structural face material fixing fastening material 35 a toward the vertical frame 12, the lower frame 31, the head joint 32, and the anti-rolling 34 that are constituent members of the frame assembly 33. By driving, it is fixed to the surface of the vertical frame 12 on the outdoor side (see FIGS. 3A and 3B).

In this embodiment, the first exterior base material 14 attached to the outdoor side surface of the structural face material 13 is, for example, JIS A 5430 and non-combustible No. 1001, non-combustible No. 1002, and non-combustible No. 1061 type, non-combustible No. 1 For example, a slag gypsum plate that is a non-combustible material having a thickness of 11 mm or more and a density of 0.9 g / cm ³ can be used.

  The first exterior base material 14 is driven, for example, with a screw nail as the exterior base material fixing fastening material 35 b toward the vertical frame 12, the lower frame 31, the head joint 32, and the anti-slip 34 that are constituent members of the frame assembly 33. Thus, the vertical frame 12 is fixed to the outdoor side surface. A ring nail, iron round nail, screw or the like can also be used as the fastening material 35b for fixing the exterior base material.

The heat insulating material 15 attached to the surface on the outdoor side of the first exterior base material 14 is a heat insulating material for an outer layer, and in this embodiment, for example, the thickness is 35 (± 4) mm according to JIS A 9511, A phenol foam heat insulating plate having a density of 27 (± 3) kg / m ³ can be used.

  The heat insulating material 15 is attached to the outdoor side surface of the first exterior base material 14 by, for example, horizontal or vertical tensioning, and the four circumferences are temporarily fixed by, for example, an iron round nail. The heat insulator 15 is driven toward the vertical frame 12, the lower frame 31, the head joint 32, and the anti-slip 34, which are constituent members of the frame assembly 33. Penetrates.

In this embodiment, the first waterproof paper 16 attached to the outdoor surface of the heat insulating material 15 is a moisture-permeable waterproof sheet made of polyester and having a unit area mass of 238 g / m ² according to JIS A 6111, for example. it can. Further, as the first waterproof paper 16, for example, a moisture permeable waterproof sheet made of polyester, polyethylene, or polypropylene having a unit area mass of 238 g / m ² or less according to JIS A 6111 can be used.

  The first waterproof paper 16 can be attached to the surface of the heat insulating material 15 using, for example, a spray paste made of a synthetic rubber resin, or a double-sided adhesive tape made of an acrylic resin, a silicone resin, a rubber resin, or the like. . The first waterproof paper 16 is preferably stretched horizontally or vertically, and the seam is preferably overlapped by 90 mm or more in both length and width. For example, it is preferable that a double-sided adhesive tape is attached to the four corners of the first waterproof paper 16 or spray paste is sprayed on the entire surface so as to be attached to the surface of the heat insulating material 15 so as not to bend or wrinkle.

  In the present embodiment, the vertical waistband member 17 attached to the outdoor side surface of the first waterproof paper 16 is a vertically long strip having a cross-sectional dimension of 18 mm × 90 mm made of, for example, surplus material. In correspondence with the position at which the vertical frame 12 is erected, a plurality of members are arranged extending in the vertical direction at intervals of, for example, 455 mm.

  The vertical body rim material 17 is made of, for example, a screw made of carbon steel wire for cold and pressure forming according to JIS G 3507-2, for example, as a body rim fixing fastener 35c toward the vertical frame 12, and a fastening interval of about 200 mm, for example. Then, the first waterproof paper 16, the heat insulating material 15, the first exterior base material 14, and the structural face material 13 are driven through and fixed to the surface of the first waterproof paper 16 on the outdoor side.

  In the present embodiment, for example, an aluminum foil-clad glass fiber cloth having a thickness of 0.15 mm can be used for the first aluminum foil layer 18 attached to the surface on the outdoor side of the vertical trunk edge member 17.

  The first aluminum foil layer 18 made of aluminum foil-clad glass fiber cloth is formed by using, for example, a staple made of stainless steel wire as a fastening material, and using a vertical body edge material 17 or an auxiliary vertical body edge as a bulge suppressing member 25 described later. Secure to the material. For example, the staples are fastened at a fastening interval of about 1500 mm in the horizontal direction and about 1000 mm in the vertical direction. The aluminum foil-clad glass fiber cloth 18 is preferably horizontally or vertically stretched, and the seam is preferably overlapped by 90 mm or more both vertically and horizontally.

In the present embodiment, the second exterior base material 19 attached to the outdoor side surface of the first aluminum foil layer 18 is, for example, JIS A 5430, Non-combustible No. 1001, Non-combustible No. 1 in the same manner as the first exterior base material 14. For example, a slag gypsum plate corresponding to No. 1002, No. 1061 and No. 1039, for example, a non-flammable material having a thickness of 11 mm or more and a density of 0.9 g / cm ³ can be used.

  The second exterior base material 19 is, for example, a screw nail as the exterior base material fixing fastening material 35b toward the vertical body edge material 17 or an auxiliary vertical body edge material as a bulge suppressing member 25 described later. By driving through the aluminum foil layer 18, the first aluminum foil layer 18 is fixed to the outdoor surface. A ring nail, iron round nail, screw or the like can also be used as the fastening material 35b for fixing the exterior base material.

  In the present embodiment, the second aluminum foil layer 20 attached to the surface on the outdoor side of the second exterior base material 19 is, for example, an aluminum foil-clad glass having a thickness of 0.15 mm, similarly to the first aluminum foil layer 18. Fiber cloth can be used.

  The second aluminum foil layer 20 made of aluminum foil-clad glass fiber cloth is fixed to the second exterior base material 19 using, for example, a staple made of stainless steel wire as a fastening material. For example, the staples are fastened at a fastening interval of about 1500 mm in the horizontal direction and about 1000 mm in the vertical direction. The aluminum foil-clad glass fiber cloth 20 is preferably horizontally or vertically stretched, and the seam is preferably overlapped by 90 mm or more in both length and width.

In the present embodiment, the third exterior base material 21 attached to the outdoor surface of the second aluminum foil layer 20 is, for example, JIS A 5430 and the same as the first exterior base material 14 and the second exterior base material 19. Use slag gypsum board that corresponds to Non-combustible No. 1001, Non-combustible No. 1002, Non-combustible No. 1061, No-combustible No. 1039, for example, a non-combustible material with a thickness of 11 mm or more and a density of 0.9 g / cm ³ be able to.

  The third exterior base material 21 is, for example, a screw nail as the exterior base material fixing fastening material 35b toward the vertical body edge material 17 or an auxiliary vertical body edge material as a bulge suppressing member 25 described later. The aluminum foil layer 20, the second exterior base material 19, and the first aluminum foil layer 18 are driven through and fixed to the surface of the second aluminum foil layer 20 on the outdoor side. A ring nail, iron round nail, screw or the like can also be used as the fastening material 35b for fixing the exterior base material. The third exterior base material 21 is disposed and attached so that the joint position thereof does not overlap with the joint position of the second exterior base material 19.

In this embodiment, the second waterproof paper 22 attached to the outdoor side surface of the third exterior base material 21 is asphalt felt 430 having a unit area mass of 860 g / m ² (two-layered) according to JIS A 6005, for example. Can be used as one or two sheets. Further, as the second waterproof paper 16, asphalt felt (one sheet or two sheets) having a unit area mass of 860 g / m ² or less, saturated polyester, polypropylene, polyester, polyvinyl chloride, ABS, polyethylene, polystyrene, etc. Unit area mass of 800 g / m ² or less plastic sheet (one or two sheets), unit area mass of 800 g / m ² or less olefin sheet (one or two sheets), unit area Unit area mass consisting of polyethylene, polyester, polypropylene, etc. according to olefin sheet (single sheet or two sheets) containing a water absorbent polymer having a mass of 800 g / m ² or less or a polymer absorbent such as methylcellulose, or JIS A 6111 800 g / m ² or less of moisture-permeable waterproof sheet (one-clad or two clad) and the unit area weight is 44 g / m ² or less of polyethylene foam sheet or the like can be used.

  As with the first waterproof paper 16, the second waterproof paper 22 uses, for example, a spray paste made of synthetic rubber resin, a double-sided adhesive tape made of acrylic resin, silicone resin, rubber resin, etc. 15 surfaces can be attached. The second waterproof paper 22 is preferably horizontally or vertically stretched, and the seam is preferably overlapped by 90 mm or more both vertically and horizontally. For example, it is preferable that a double-sided adhesive tape is attached to the four corners of the second waterproof paper 22 or spray paste is sprayed on the entire surface so as to be attached to the surface of the third exterior base material 21 so as not to bend or wrinkle.

  As the joint material for the second waterproof paper 22 or the first waterproof paper 16, an airtight tape such as acrylic, EPDM rubber, butyl rubber or asphalt, glass fiber tape, or the like can be used.

  The lath mortar layer 23 applied to the surface of the second waterproof paper 22 on the outdoor side is preferably formed by a construction method substantially similar to a known method for forming a mortar outer wall. It consists of a steel net 23a and a lightweight cement mortar 23b. Further, in the present embodiment, the glass fiber net 28 is sunk into the outdoor portion of the lath mortar layer 23, so that the outdoor portion is reinforced by the glass fiber net 28.

In this embodiment, for example, JIS A 5505 metal lath having a unit area mass of 500 g / m ² subjected to rust prevention treatment can be used for the iron mesh 23a constituting the lath mortar layer 23. In addition to the metal lath having a unit area mass of 500 g / m ² or more, for example, JIS A 5505, galvanized iron wire according to JIS G 3547, kraft paper or unit area according to JIS P 3401, etc. Turbolin paper with a mass of 150 g / m ² or less (waterproof paper filled with asphalt between two kraft papers) or polymic paper with a unit area mass of 150 g / m ² or less (polyethylene resin between two kraft papers) Further, a steel net with waterproof paper having a unit area mass of 700 g / m ² or more subjected to rust prevention treatment and attached with waterproof paper filled with polypropylene resin) can be preferably used.

  The steel net 23a is horizontally or vertically arranged in a staggered manner, and the seam is overlapped by 30 mm or more both vertically and horizontally so that there is no lifting or sagging. In addition, as the fixing material for fixing the iron net, for example, a staple made of stainless steel wire according to JIS G 4309 or iron wire according to JIS G 3532 is driven toward the third exterior base material 21, so that the second waterproof paper 22 The covered third exterior base material 21 is fixed to the surface on the outdoor side.

  The lightweight cement mortar 23b constituting the lath mortar layer 23 includes, for example, ordinary Portland cement, various known inorganic admixtures such as inorganic lightweight aggregate, inorganic aggregate, inorganic admixture, and a small amount of inorganic additive, and organic aggregate And various known organic admixtures such as organic minor additives and organic fibers.

The glass fiber net 28 sunk into the outdoor side portion of the lath mortar layer 23 has, for example, a thickness of 0.3 mm or more, a unit area mass of 80 g / m ² or more, and a mesh interval of 4 × 4 to 10 × 10 mm or more. Alkali resistant glass fiber nets can be used.

  In this embodiment, the lightweight cement mortar 23b and the glass fiber net 28 are constructed on the surface on the outdoor side of the second waterproof paper 22 to which the iron net 23a is attached, for example, as follows.

  That is, for example, after kneading a commercially available lightweight cement mortar and a standard amount of water displayed on the packaging material with a mortar mixer, the lightweight cement mortar after kneading is used as an undercoat for lath application. For example, a thickness of about 10 mm is applied to the surface of the second waterproof paper 22 on the outdoor side by applying sufficient pressure while rubbing downward. After taking a curing period of 1 to 2 days after the undercoating, as a top coating, the kneaded lightweight cement mortar is sufficiently applied to the surface of the undercoating mortar with a thickness of about 5 mm by applying sufficient pressure. In addition, when the top coat is applied, the wet state of the undercoat mortar is observed, and water is appropriately wetted or a water absorbing preparation is applied. In addition, the top coat is properly remedied by looking at the watering condition of the mortar.

  Immediately after the top coating, the glass fiber net 28 is stretched and pressed with a scissors so as to become familiar with the top coating mortar, so that the glass fiber net 28 is depressed in the top coating mortar which is the outdoor side portion of the lightweight cement mortar 23b. After the top coating, the light-weight cement mortar 23b is cured for 10 days or more (14 days or more in winter).

  In the present embodiment, a plurality of vertical body rim members 17 are attached to the surface on the outdoor side of the heat insulating material 15 covered with the first waterproof paper 16 at a predetermined pitch of, for example, 455 mm at intervals in the horizontal direction. As an expansion restraining member 25 that suppresses the expansion of the heat insulating material 17 toward the first aluminum foil layer 18 due to heat at the time of fire, an auxiliary trunk edge member preferably extends in the longitudinal direction. Is provided.

  In this embodiment, the auxiliary waistband material that becomes the bulging suppression member 25 is a vertically long strip-like member having a cross-sectional dimension of 18 mm × 45 mm made of, for example, a surplus material. A plurality of them are arranged in the central part of the space portion between them, extending in the vertical direction at a pitch of 455 mm, for example.

  The auxiliary waistline material as the bulging suppression member 25 is, for example, a screw made of a stainless steel wire for cold-sensation forging according to JIS G 4315, for example, about 300 mm toward the heat insulating material 15 as a fastening material 35d for fastening the body edge. By sticking through the first waterproof paper 16 at the fastening interval, the heat insulating material 15 covered with the first waterproof paper 16 is attached to the surface on the outdoor side.

  By providing the bulging prevention member 25 by the auxiliary trunk rim material attached to the heat insulating material 15 in the space | interval part between the vertical trunk rim materials 17, the adjacent vertical trunk rim material 17 by the heat at the time of a fire. The second exterior base material in which the surface on the outdoor side opposite to the thermal insulation material 15 of the auxiliary trunk rim material is covered with the first aluminum foil layer 18 so that the thermal insulation material 15 bulges in the interval portion between them. It becomes possible to suppress effectively by contact | abutting closely to the surface of 19 indoors. As a result, the vertical ventilation layer 24 formed between the first waterproof paper 16 and the first aluminum foil layer 18 due to the interposition of the vertical trunk edge material 17 makes the heat insulating material 15 the first aluminum foil in the event of a fire. It is possible to effectively avoid clogging by swelling to the layer 18 side, and easily maintain the ventilation function by the longitudinal ventilation layer 24.

  In the present embodiment, a draining member 29 is attached to the lower end portion of the outer heat insulating fireproof structure 10. The draining member 29 is joined by sandwiching the joining piece portion 29a between the lower end portion of the structural face material 13 and the lower end portion of the first exterior base material 14, and the overhanging piece portion 29b is joined to the third piece. It is attached in a state where it extends to the front of the exterior base material 21.

In this embodiment, the interior ply material 26 attached to the surface on the indoor side of the vertical frame 12 uses a structural plywood conforming to the Japanese Agricultural Standards, for example, having a thickness of 9 mm and a density of 0.48 g / cm ^3. be able to. Further, as the structural face material 13, for example, a structural plywood of 9 mm or more, a structural panel having a thickness of 9 mm or more, a particle board having a thickness of 9 mm or more, or a sieving board having a thickness of 12 mm or more. Or a hard wood chip cement board with a thickness of 12 to 25 mm, a pulp cement board with a thickness of 9 mm or more, a flexible board with a thickness of 9 mm or more, a calcium silicate board with a thickness of 9 mm or more, a thickness of 9 mm or more Pulp / calcium silicate mixed cement board, double-sided acrylic resin coated pulp / silicate mixed cement board with a thickness of 9 mm or more, cement board such as fiber reinforced cement board with a thickness of 9 mm or more, or a thickness of 9 mm or more Volcanic glassy multilayer boards, gypsum boards having a thickness of 12.5 mm or more, and the like can be used.

  The interior face material 26 is, for example, a thick iron round nail as a fastening material 35e for fixing the interior face material toward the vertical frame 12, the lower frame 31, the head joint 32, and the anti-slip 34 that are constituent members of the frame assembly 33. For example, it is fixed to the surface on the indoor side of the vertical frame 12 by driving in at a fastening interval of about 300 mm (see FIGS. 3A and 3B).

  In this embodiment, for example, a reinforced gypsum board having a thickness of 21 mm according to JIS A 6901 can be used for the underlay interior material 27a of the interior material 27 attached to the interior surface of the interior surface material 26.

  The underlaying interior material 27a is, for example, JIS A as a fastening material 35f for fixing the underlaying interior material toward the vertical frame 12, the lower frame 31, the head joint 32, and the anti-rolling 34 that are constituent members of the frame assembly 33. By using a gypsum board nail according to 5508, for example, the peripheral portion is fixed to the surface on the indoor side of the interior surface material 26 by driving in at a fastening interval of about 100 mm and the intermediate portion at about 200 mm.

  In the present embodiment, the upholstery interior material 27b attached to the indoor side surface of the upholstery interior material 27a is reinforced plaster having a thickness of, for example, 21 mm, for example, according to JIS A 6901, similarly to the upholstery interior material 27a. A board can be used.

  The upper interior material 27b is, for example, a staple made of stainless steel wire according to JIS G 4309, for example, 200 mm in the horizontal direction, as the upper interior material fixing fastener 35g toward the lower interior material 27a. The vertical direction is fixed to the indoor side surface of the underlining material 27a by driving in at a fastening interval of 200 mm. A joint treatment material for a gypsum board according to JIS A 6914, for example, is applied to the joint portion of the upholstery interior material 27b as a joint treatment material for the interior material, and finished smoothly.

  And according to the outer wall heat insulation and fireproof structure 10 of the outer wall of the present embodiment having the above-described configuration, the outer wall 11 by the frame wall construction method has an excellent heat insulation performance and an excellent fireproof performance against a fire from the outdoor side. Can be granted automatically.

  That is, according to this embodiment, since the heat insulating material 15 is continuously attached to the outdoor side of the frame assembly 33 without being divided, it is possible to avoid the vertical frame 12 from becoming a thermal bridge, and It is possible to effectively improve the heat insulation performance.

  Further, according to the present embodiment, the frame assembly 33 and the heat insulating material are used to supplement the fixing strength of the metal fitting for fixing the heat insulating material 15 for the outer layer or to reinforce the fire resistance performance of the heat insulating material 15 for the outer layer. In addition to the structural face material 13, the first exterior base material 14, which is a non-combustible material, is disposed between the first waterproof paper 16 and the first waterproof paper 16. A vertical ventilation layer 24 is formed between the aluminum foil layer 18 and the vertical ventilation layer 24 is swelled by the auxiliary trunk edge material which is a bulging prevention member 25 in the event of a fire. Thus, the non-combustible plate made of the second exterior base material 19 and the third exterior base material 21, which are non-combustible materials, is provided on the outdoor side of the heat insulating material 15. Since multiple layers are arranged, they can prevent fire from the outside. Fire Resistance effectively it is possible to improve that.

  In addition, the inventor of the present application conducted a fire resistance performance test according to the Building Standards Act Enforcement Ordinance No. 108-2 on the outer wall test body having the same configuration as the outer wall heat insulating fireproof structure 10 of the outer wall of the present embodiment. According to the outer heat insulating fireproof structure 10 of the outer wall of the form, it was confirmed that the fire resistance performance of 1 hour prescribed in the Building Standard Law Enforcement Ordinance Article 2 No. 7 can be obtained.

  The present invention can be variously modified without being limited to the above embodiment. For example, the bulging prevention member disposed in the space between the vertical trunk rim members does not necessarily need to be an auxiliary trunk rim member, and suppresses the bulging of the heat insulating material due to heat at the time of a fire, thereby preventing the vertical ventilation layer Various other bulging restraining members that can hold the swell can be used. The bulge suppressing member is not necessarily provided to extend in the vertical direction.

DESCRIPTION OF SYMBOLS 10 Outer wall heat insulation fireproof structure 11 Outer wall 12 Vertical frame 13 Structural surface material 14 First exterior base material 15 Thermal insulation material 16 First waterproof paper 17 Vertical trunk edge material 18 First aluminum foil layer 19 Second exterior base material 20 2nd aluminum foil layer 21 3rd exterior base material 22 2nd waterproof paper 23 Las mortar layer 23a Iron net 23b Lightweight cement mortar 24 Longitudinal ventilation layer 25 Swelling suppression member 26 Interior surface material 27 Interior material 27a Underlay interior material 27b Upholstery interior material 28 Glass fiber net 31 Lower frame 32 Head connection (upper frame)
33 Framework

Claims (7)

It is an external heat insulation fireproof structure of the outer wall used for the wooden house building by the frame wall construction method,
A structural face member attached to the outdoor side surface of the vertical frame, a first exterior base material attached to the outdoor side surface of the structural face material, and an outdoor side surface of the first exterior base material A plurality of attached heat insulating materials, a first waterproof paper attached to the outdoor side surface of the heat insulating material, and a plurality of attached papers spaced laterally at a predetermined pitch on the outdoor side surface of the first waterproof paper A vertical body rim material, a first aluminum foil layer attached to the outdoor side surface of the vertical body rim material, a second exterior base material attached to the outdoor side surface of the first aluminum foil layer, A second aluminum foil layer attached to the outdoor side surface of the second exterior base material; a third exterior base material attached to the outdoor side surface of the second aluminum foil layer; and the third exterior base material 2nd waterproof paper attached to the surface of the outdoor side and lath mortar constructed on the outdoor surface of the second waterproof paper It is configured to include a preparative,
Protruding to the first aluminum foil layer side of the heat insulating material due to heat at the time of fire, provided in a space between the longitudinal body rim members attached at a predetermined pitch and spaced apart in the lateral direction In the event of a fire, it is possible to hold the vertical ventilation layer formed between the first waterproof paper and the first aluminum foil layer by interposing the vertical trunk edge material in the event of a fire. Outer heat insulation fireproof structure of the outer wall to which the outage prevention member is attached.   The outer wall heat insulation fireproof structure of the outer wall according to claim 1, wherein the first aluminum foil layer and the second aluminum foil layer are formed using an aluminum glass fiber cloth.   The exterior heat insulation fireproof structure of the outer wall of Claim 1 or 2 with which the part by the side of the outdoor of the said lath mortar layer is reinforced with the glass fiber net.   The external heat insulation fireproof structure of the outer wall according to any one of claims 1 to 3, wherein the first exterior base material, the second exterior base material, and the third exterior base material are made of slag gypsum plates.   The outer wall heat insulation fireproof structure of the outer wall according to any one of claims 1 to 4, wherein the heat insulating material is a phenol foam heat insulating plate.   The interior surface material attached to the surface on the indoor side of the vertical frame and the interior material attached to the surface on the indoor side of the interior surface material. Outer wall heat insulation fireproof structure of the outer wall.   The exterior heat insulation fireproof structure of the outer wall according to claim 6, wherein the interior material has a two-layer structure including a lower interior material made of reinforced gypsum board and an upper interior material made of reinforced gypsum board.

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