JP2006132163A

JP2006132163A - Interior wall structure

Info

Publication number: JP2006132163A
Application number: JP2004321416A
Authority: JP
Inventors: Akira Ueda; 明良上田; Masaki Tono; 正樹戸野; Ichiro Nakano; 一郎中野; Hideyuki Nasu; 秀行那須
Original assignee: Sumitomo Forestry Co Ltd; Sekisui Chemical Co Ltd
Current assignee: Sumitomo Forestry Co Ltd; Sekisui Chemical Co Ltd
Priority date: 2004-11-05
Filing date: 2004-11-05
Publication date: 2006-05-25
Anticipated expiration: 2024-11-05
Also published as: JP4540450B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interior wall structure ensuring fire-resistant performance more than a predetermined performance though a column member is exposed inside a room. <P>SOLUTION: A front surface of a ligneous main column 5 joined to a gypsum board 6 etc. is exposed inside the room without being covered with the gypsum board 6 etc. in the interior wall structure. The interior wall structure has a ligneous parallel column member 7 erected along a side surface of the main column 5 on the rear surface side of the gypsum board 6 etc. and an L-shaped shielding material 8 installed at least either between a rear surface of the gypsum board 6 etc. and a parallel column member 7 or between the parallel column member 7 and the main column 5 and shielding transmission of heat from the gap to the side surface of the main column 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、構造物の躯体の内側に内装または間仕切りとして構築する内装壁構造に関するものである。 The present invention relates to an interior wall structure constructed as an interior or partition inside a housing of a structure.

従来、燃え難い内装壁構造として、図１２に平面図を示したような、主柱１の表面が石膏ボード２，２で覆われた内装壁４が知られている（特許文献１，２など参照）。 Conventionally, an interior wall 4 in which the surface of the main pillar 1 is covered with gypsum boards 2 and 2 as shown in a plan view in FIG. reference).

この内装壁４は、主柱１の前面と裏面とを、耐火性の被覆材である石膏ボード２，２で覆った間仕切りとしての内装壁構造であって、石膏ボード２，２の間には主柱１と間隔を置いて間柱３，３が立設されている。 The interior wall 4 is an interior wall structure as a partition in which the front and back surfaces of the main pillar 1 are covered with gypsum boards 2 and 2 that are fire-resistant coating materials. Spacers 3 and 3 are erected with a distance from the main pillar 1.

このように建物の内装壁４は、室内で起きた火災が燃え広がらないように耐火構造又はそれに準ずる耐火性能を有する準耐火構造にすることが望ましく、建物の部分ごとに火災時の加熱に一定時間以上耐える得る性能であることが、建築基準法によって定められている。 Thus, it is desirable that the interior wall 4 of the building has a refractory structure or a quasi-refractory structure having a fire resistance performance equivalent to that so that a fire that occurs in the room does not burn and spread. It is stipulated by the Building Standard Law that it can withstand more than an hour.

一方、近年、在来の木造軸組工法、枠組工法、木質系プレハブ工法、木質系ラーメン構造等の木質系建築物では、特に戸建て住宅の分野において、意匠性を向上させるために、主柱１を石膏ボード２等の不燃材料で覆うことなく、室内側に露出させる構造が増加してきている。
特開２００４−１４３９１１号公報（図１６、段落０００２乃至０００３）特開２００１−２９５３９５号公報（図１、段落０００２乃至０００６） On the other hand, in recent years, in wooden buildings such as the conventional wooden frame construction method, frame construction method, wood-based prefabrication method, and wood-based ramen structure, in order to improve the design, especially in the field of detached houses, the main pillar 1 There is an increasing number of structures that are exposed to the indoor side without being covered with a non-combustible material such as gypsum board 2.
JP 2004-143911 A (FIG. 16, paragraphs 0002 to 0003) JP 2001-295395 A (FIG. 1, paragraphs 0002 to 0006)

しかしながら、主柱１を室内側に露出させた構造では、主柱１の前面が石膏ボード２等の不燃材料に覆われていないため、主柱１側面と石膏ボード２の接合部から石膏ボード２の裏面側に熱が伝わり易く、石膏ボード２裏面側の閉塞空間の温度が上昇し、その輻射熱によって主柱１が側面から燃焼することがあった。このため、耐火構造や準耐火構造と同じレベルの耐火性能を確保した構造にすることが難しかった。 However, in the structure in which the main pillar 1 is exposed to the indoor side, since the front surface of the main pillar 1 is not covered with a non-combustible material such as the gypsum board 2, the gypsum board 2 from the joint between the side face of the main pillar 1 and the gypsum board 2. Heat is easily transmitted to the back side of the gypsum board, the temperature of the closed space on the back side of the gypsum board 2 rises, and the main pillar 1 may burn from the side surface due to the radiant heat. For this reason, it was difficult to make the structure which ensured the fire resistance performance of the same level as a fireproof structure or a semi-fireproof structure.

そこで、本発明は、柱部材を室内側に露出させながらも、所定以上の耐火性能を確保することができる内装壁構造を提供することを目的としている。 Therefore, an object of the present invention is to provide an interior wall structure capable of ensuring a fire resistance performance of a predetermined level or more while exposing a pillar member to the indoor side.

前記目的を達成するために、請求項１の発明は、壁部材に接合される木質系の柱部材の前面が、該壁部材に覆われることなく室内側に露出する内装壁構造であって、前記壁部材の裏面側に前記柱部材の側面に沿って立設される木質系の並設柱部材と、前記壁部材の裏面と前記並設柱部材の間又は前記並設柱部材と前記柱部材の間の少なくとも一方に介在されて、その間からの前記柱部材側面への熱の伝達を遮断する熱遮断部材とを有する内装壁構造であることを特徴とする。 In order to achieve the above object, the invention of claim 1 is an interior wall structure in which a front surface of a wooden column member joined to a wall member is exposed to the indoor side without being covered by the wall member, A wood-based juxtaposed column member standing on the back surface side of the wall member along the side surface of the column member, and between the back surface of the wall member and the juxtaposed column member or between the juxtaposed column member and the column It is an interior wall structure having a heat blocking member that is interposed in at least one of the members and blocks heat transfer from the space to the side surface of the column member.

熱遮断部材としては、樹脂発泡体や無機系材料などが用いられる。ここで、樹脂発泡体としては、例えばフェノールフォーム、ウレタンフォーム、ポリエチレンフォーム、ポリプロピレンフォーム、ポリスチレンフォーム等、あるいはこれらのフォーム材料に水酸化アルミニウム等の無機粉体を充填したもの、無機系の発泡体などが挙げられる。 A resin foam or an inorganic material is used as the heat shielding member. Here, as the resin foam, for example, phenol foam, urethane foam, polyethylene foam, polypropylene foam, polystyrene foam or the like, or those foam materials filled with inorganic powder such as aluminum hydroxide, inorganic foam Etc.

また、無機系材料としては、石膏ボード、ケイ酸カルシウム板、繊維強化石膏ボード、軽量気泡コンクリート（ＡＬＣ）板、押出成形セメント板、ＰＣ板、成型モルタル、鉄、鋼、ステンレス、亜鉛メッキ鋼板、アルミ亜鉛合金メッキ鋼板、アルミニウム等の金属が挙げられる。 Also, inorganic materials include gypsum board, calcium silicate board, fiber reinforced gypsum board, lightweight cellular concrete (ALC) board, extruded cement board, PC board, molded mortar, iron, steel, stainless steel, galvanized steel sheet, Examples thereof include metals such as aluminum zinc alloy plated steel plates and aluminum.

さらに、熱遮断部材としては、加熱によって膨張する熱膨張性耐火材が好適に用いられる。 Furthermore, as the heat blocking member, a thermally expandable refractory material that expands by heating is suitably used.

前記熱膨張性耐火材は、50kW/m²の加熱条件下で、30分間加熱した際の体積膨張率が3〜50倍であって、かつ圧縮試験器にて0.25cm²の圧子を用いて測定した体積膨張後の破断点応力が4.9kPa以上の材料が好ましい。 The heat-expandable refractory material has a volume expansion coefficient of 3 to 50 times when heated for 30 minutes under a heating condition of 50 kW / m ² , and uses a 0.25 cm ² indenter in a compression tester. A material having a measured stress at break after volume expansion of 4.9 kPa or more is preferable.

そして、前記熱膨張性耐火材としては、樹脂成分100重量部に対して、熱膨張性無機物を10〜300重量部、無機充填材を30〜400重量部含有し、前記熱膨張性無機物及び前記無機充填材の合計重量が40〜500重量部となる樹脂組成物の材料が挙げられる。 And as said heat-expandable refractory material, 10 to 300 parts by weight of heat-expandable inorganic material and 30 to 400 parts by weight of inorganic filler with respect to 100 parts by weight of the resin component, the heat-expandable inorganic material and the above-mentioned Examples thereof include a resin composition material in which the total weight of the inorganic filler is 40 to 500 parts by weight.

請求項２に記載のものは、前記並設柱部材は前記柱部材の側面に固定されており、前記熱遮断部材は加熱によって膨張する熱膨張性耐火材である請求項１に記載の内装壁構造であることを特徴とする。 The interior wall according to claim 1, wherein the juxtaposed column member is fixed to a side surface of the column member, and the heat shielding member is a thermally expandable refractory material that expands by heating. It is a structure.

このように構成された請求項１の発明は、木質系の前記柱部材の側面に沿って前記並設柱部材が立設されており、その並設柱部材は前記壁部材の裏面側に配置されている。さらに、前記壁部材の裏面と前記並設柱部材の間又は前記並設柱部材と前記柱部材の間の少なくとも一方に、前記熱遮断部材が介在される。 In the invention of claim 1 configured as described above, the juxtaposed column members are erected along the side surface of the wooden column member, and the juxtaposed column members are arranged on the back side of the wall member. Has been. Further, the heat shielding member is interposed between at least one of the rear surface of the wall member and the juxtaposed column member or between the juxtaposed column member and the column member.

そして、前記壁部材の室内側に発生した火災の熱は、前記壁部材を伝達した後に、前記並設柱部材に伝達される前、又は前記並設柱部材から前記柱部材側面に伝達される前に、前記熱遮断部材によって遮断される。 And the heat of the fire which generate | occur | produced in the indoor side of the said wall member is transmitted to the said column member side surface before transmitting to the said parallel column member after transmitting the said wall member, or the said column member. Before, it is blocked by the heat blocking member.

このため、室内側で発生した火災によって前記壁部材の裏面側に伝達された熱は、前記柱部材の側面に到達し難く、前記柱部材が燃焼する温度に到達するまでに時間がかかる。これによって、所定時間以上の間、加熱に耐えることができる耐火性能を確保することができる。 For this reason, the heat transmitted to the back surface side of the wall member due to the fire generated indoors hardly reaches the side surface of the column member, and it takes time to reach the temperature at which the column member burns. As a result, it is possible to ensure fire resistance that can withstand heating for a predetermined time or longer.

また、請求項２に記載のものは、前記並設柱部材は前記柱部材の側面に固定されており、その間に介在される前記熱遮断部材は、加熱によって膨張する熱膨張性耐火材で形成されている。 Further, according to the present invention, the side-by-side column member is fixed to a side surface of the column member, and the heat blocking member interposed therebetween is formed of a thermally expandable refractory material that expands by heating. Has been.

このため、室内側の火災によって加熱が始まると、前記熱遮断部材が前記柱部材とその側面に固定された前記並設柱部材の隙間の中で膨張して広がるため、熱の伝達を広い範囲で効果的に防ぐことができる。 For this reason, when heating is started by an indoor fire, the heat blocking member expands and spreads in the gap between the column member and the side-by-side column member fixed to the side surface thereof, so that heat transfer is wide. Can effectively prevent.

さらに、前記熱膨張性耐火材は、所定の条件下での体積膨張率が3〜50倍であって、体積膨張後の破断点応力が4.9kPa以上の材料である。 Further, the thermally expandable refractory material is a material having a volume expansion coefficient of 3 to 50 times under a predetermined condition and a breaking point stress after volume expansion of 4.9 kPa or more.

このため、火災の加熱によって確実に体積を膨張させて前記柱部材への熱の伝達を防ぐことができる上に、膨張しても一定以上の破断耐力を有しているため、切断されて効果を低減させることがない。 For this reason, the volume can be reliably expanded by heating of the fire to prevent the transfer of heat to the column member, and even if expanded, it has a certain breaking strength, so it is cut and effective Is not reduced.

そして、前記熱膨張性耐火材は、樹脂成分100重量部に対して、熱膨張性無機物を10〜300重量部、無機充填材を30〜400重量部含有し、前記熱膨張性無機物及び前記無機充填材の合計重量が40〜500重量部となる樹脂組成物の材料である。 The thermally expandable refractory material contains 10 to 300 parts by weight of a thermally expandable inorganic material and 30 to 400 parts by weight of an inorganic filler with respect to 100 parts by weight of a resin component, and the thermally expandable inorganic material and the inorganic material It is a resin composition material in which the total weight of the filler is 40 to 500 parts by weight.

このような材料を使用することで、壁部材から柱部材が露出した内装壁構造の耐火性能を、確実に向上させることができる。 By using such a material, the fire resistance performance of the interior wall structure in which the column member is exposed from the wall member can be reliably improved.

以下、本発明の最良の実施の形態について図面を参照して説明する。 The best mode for carrying out the present invention will be described below with reference to the drawings.

図１及び図２は、間仕切りとして室内を分割する際に使用される本実施の形態による内装壁１５の構成を示した図である。 FIG.1 and FIG.2 is the figure which showed the structure of the interior wall 15 by this Embodiment used when dividing a room | chamber interior as a partition.

まず、構成から説明すると、このような本実施の形態の内装壁１５は、壁部材としての石膏ボード６，・・・と、木質系の柱部材としての主柱５と、その主柱５の側面に沿って左右両側に立設される木質系の並設柱部材７，７と、熱遮断部材としてのＬ字型遮断材８，・・・と、石膏ボード６，６の間に主柱５と間隔を置いて配置される間柱９とによって主に構成される。 First, from the configuration, the interior wall 15 according to the present embodiment includes a gypsum board 6 as a wall member, a main pillar 5 as a wooden pillar member, and the main pillar 5. The main pillars between the wood-based side-by-side pillar members 7 and 7 erected on the left and right sides along the side surface, the L-shaped shielding member 8 as a heat shielding member, and the gypsum boards 6 and 6 5 and a stud 9 arranged at an interval.

この内装壁１５は、間仕切りとして使用される壁であるため、内装壁１５の両側の壁面が室内側に面することになる。このため、主柱５の左右両側に、室内側壁面を形成させる石膏ボード６，・・・を並列させる。 Since the interior wall 15 is a wall used as a partition, the wall surfaces on both sides of the interior wall 15 face the indoor side. For this reason, the gypsum boards 6... That form the indoor side wall surfaces are arranged in parallel on the left and right sides of the main pillar 5.

この石膏ボード６は、焼き石膏にノコ屑やパーライト等の軽量材を混入して加圧成形された不燃材料である。 This gypsum board 6 is a non-combustible material that is pressure-molded by mixing light-weight materials such as sawdust and pearlite into baked gypsum.

本実施の形態の主柱５の前面及び裏面は、この石膏ボード６，・・・に覆われることなく、それぞれの室内側に露出されている。すなわち、石膏ボード６，・・・は、主柱５の側面に端面が当接されるように配置される。 The front and back surfaces of the main pillar 5 of the present embodiment are exposed to the respective indoor sides without being covered with the gypsum boards 6. That is, the gypsum boards 6,... Are arranged so that the end surfaces are in contact with the side surfaces of the main pillar 5.

主柱５は、構造部材として使用される木質系の支持部材であって、マツ、ツガ、ヒバ、ヒノキ、モミ、スギ、スプルース、カシ、クリ、ナラ、ブナ、ケヤキ等の無垢材や、集成材、積層材（ＬＶＬ）などによって形成される。また、耐火性能を向上させるために、炭化速度の遅い比重が0.3以上の材料を使用するのが好ましい。 The main pillar 5 is a wood-based support member used as a structural member, which is made of solid wood such as pine, tsuga, hiba, cypress, fir, cedar, spruce, oak, chestnut, oak, beech, zelkova, Formed of a material, a laminated material (LVL), or the like. In order to improve the fire resistance, it is preferable to use a material having a specific gravity with a slow carbonization rate of 0.3 or more.

また、この主柱５の側面に沿って立設させる並設柱部材７は、主柱５の側面に輻射熱が直接、当たらないように配置される木質系の部材である。 Further, the side-by-side column member 7 erected along the side surface of the main column 5 is a wood-based member that is arranged so that the radiant heat does not directly hit the side surface of the main column 5.

この並設柱部材７は、マツ、ツガ、ヒバ、ヒノキ、モミ、スギ、スプルース、カシ、クリ、ナラ、ブナ、ケヤキ等の無垢材や、集成材、積層材（ＬＶＬ）などによって形成される。さらに、耐火性能を向上させるために、炭化速度の遅い比重が0.3以上の材料を使用するのが好ましい。 This side-by-side column member 7 is formed of a solid material such as pine, tsuka, hiba, cypress, fir, cedar, spruce, oak, chestnut, oak, beech, zelkova, laminated wood, laminated material (LVL), or the like. . Furthermore, in order to improve fire resistance, it is preferable to use a material having a specific gravity with a slow carbonization rate of 0.3 or more.

並設柱部材７は、主柱５の側面に、ビス、釘、接着剤等の固定手段を単独あるいは複合して施すことによって固定される。また、金属金物等を介して固定しても良い。さらに、並設柱部材７と主柱５に突起と切欠を設けてめし合わさるように固定しても良く、その場合にビス、釘、接着剤等を併用しても良い。 The side-by-side column members 7 are fixed to the side surfaces of the main column 5 by applying fixing means such as screws, nails, adhesives or the like alone or in combination. Moreover, you may fix through metal hardware etc. Further, the juxtaposed column member 7 and the main column 5 may be provided with protrusions and notches so as to be fixed together, and in that case, screws, nails, adhesives or the like may be used in combination.

このように並設柱部材７を主柱５に固定することで、主柱５と並設柱部材７が一体の複合部材として荷重を受けることができるようになるため、主柱５の曲げ耐力を増加させることができる。 By fixing the juxtaposed column member 7 to the main column 5 in this way, the main column 5 and the juxtaposed column member 7 can receive a load as an integrated composite member. Can be increased.

また、Ｌ字型遮断材８は、平面視略Ｌ字型のシート状又は板状の熱膨張性耐火材である。このＬ字型遮断材８は、並設柱部材７の角部に沿って、その長さと同じ長さとなるように延設される。 The L-shaped blocking material 8 is a substantially L-shaped sheet-like or plate-like thermally expandable refractory material in plan view. The L-shaped blocking member 8 is extended along the corners of the side-by-side column members 7 so as to have the same length as that length.

さらに、Ｌ字型遮断材８は、平面視が一体となっていても良いが、石膏ボード６に平行である面と、主柱５に平行である面とに分割されていても良い。そして、その面ごとに単独または複数の熱膨張性耐火材を取り付けることができる。 Further, the L-shaped blocking material 8 may be integrated in plan view, but may be divided into a surface parallel to the gypsum board 6 and a surface parallel to the main pillar 5. And the single or several thermally expansible refractory material can be attached for every surface.

このＬ字型遮断材８を形成する熱膨張性耐火材は、平面視が連続している方が望ましいが、施工面や納まり具合によっては不連続となっていても良い。 The thermally expandable refractory material forming the L-shaped blocking material 8 is preferably continuous in plan view, but may be discontinuous depending on the construction surface and the degree of accommodation.

また、Ｌ字型遮断材８は、主柱５又は並設柱部材７に取り付ける。この取り付け方法としては、ビス、釘、接着剤、粘着テープ、タッカー等の固定手段あるいは熱膨張性耐火材の自己粘着力を利用するなどを、単独あるいは複合して適用することができる。 Further, the L-shaped blocking material 8 is attached to the main pillar 5 or the parallel pillar member 7. As this attachment method, fixing means such as screws, nails, adhesives, adhesive tapes, and tuckers, or utilizing the self-adhesive force of a thermally expandable refractory material can be applied alone or in combination.

また、熱膨張性耐火材は、熱膨張性能及び膨張時の強度に優れた材料であって、例えば、50kW/m²の加熱条件下で、30分間加熱した際の体積膨張率が3〜50倍となる。また、圧縮試験器にて0.25cm²の圧子を用いて測定した体積膨張後の破断点応力が4.9kPa以上となる。 Further, the thermally expandable refractory material is a material having excellent thermal expansion performance and strength at the time of expansion, for example, a volume expansion coefficient when heated for 30 minutes under a heating condition of 50 kW / m ² is 3 to 50 Doubled. Further, the stress at break after volume expansion measured with a compression tester using a 0.25 cm ² indenter is 4.9 kPa or more.

さらに、この熱膨張性耐火材は、樹脂成分100重量部に対して、熱膨張性無機物を10〜300重量部、無機充填材を30〜400重量部を含有する材料である。そして、前記熱膨張性無機物及び前記無機充填材の合計重量が40〜500重量部となる樹脂組成物の材料である。 Furthermore, this heat-expandable refractory material is a material containing 10 to 300 parts by weight of a heat-expandable inorganic substance and 30 to 400 parts by weight of an inorganic filler with respect to 100 parts by weight of the resin component. And it is a material of the resin composition in which the total weight of the said thermally expansible inorganic substance and the said inorganic filler becomes 40-500 weight part.

以下、実施例１では、前記実施の形態の内装壁構造について行なった耐火試験について説明する。なお、前記実施の形態で説明した内容と同一乃至均等な部分の説明については同一符号を付して説明する。 Hereinafter, in Example 1, a fire resistance test performed on the interior wall structure of the above embodiment will be described. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

図３は、耐火試験に使用した内装壁１５の平面図を示した図である。この内装壁１５は、主柱５（高さ1090mm×幅455mm×厚さ105mm）と、４枚の石膏ボード６（高さ1180mm×幅362mm×厚さ12.5mm）と、２本の並設柱部材７（高さ1180mm×幅36mm×厚さ45mm）と、並設柱部材７，７の主柱５側の角部（４箇所）に配置されるＬ字型遮断材８（高さ1180mm×一辺20mm×厚さ0.5mm）と、枠材として両端に立設される間柱９（高さ1180mm×幅45mm×厚さ45mm）とによって構成される。 FIG. 3 is a plan view of the interior wall 15 used in the fire resistance test. The interior wall 15 has a main pillar 5 (height 1090 mm × width 455 mm × thickness 105 mm), four plaster boards 6 (height 1180 mm × width 362 mm × thickness 12.5 mm), and two parallel columns. Member 7 (height 1180mm x width 36mm x thickness 45mm) and L-shaped blocking material 8 (height 1180mm x height) arranged at the corners (4 places) on the main pillar 5 side of the juxtaposed column members 7 and 7 Each side is 20 mm × thickness 0.5 mm) and a pillar 9 (height 1180 mm × width 45 mm × thickness 45 mm) standing on both ends as a frame material.

さらに、内装壁１５の上縁部と下縁部には、枠材（図示省略）を取り付けて石膏ボード６，６間を塞ぎ、石膏ボード６，６間の熱が上縁部又は下縁部から逃げ出さないようにした。 Further, a frame material (not shown) is attached to the upper edge and the lower edge of the interior wall 15 to close the gap between the plaster boards 6 and 6, and the heat between the plaster boards 6 and 6 is the upper edge or the lower edge. I tried not to escape.

そして、加熱時の温度を測定するために、図３に示した５箇所の測定点ａ，ｂ，ｃ，ｄ，ｅに熱電対を取り付けた。この測定点は、内装壁１５の下縁部から590mmの高さに設けた。 And in order to measure the temperature at the time of a heating, the thermocouple was attached to five measurement points a, b, c, d, and e shown in FIG. This measurement point was provided at a height of 590 mm from the lower edge of the interior wall 15.

この内装壁１５は、図３に示した加熱側から加熱をおこない、各測定点ａ，ｂ，ｃ，ｄ，ｅの温度上昇の経過を測定した。ここで、加熱は、加熱側の壁面が一様に加熱されるように45分間おこなった。加熱はＩＳＯ８３４曲線として規定されている温度上昇曲線に合わせておこない、加熱開始から5分後には約580℃、10分後には約680℃、45分後には約900℃となるようにした。 The interior wall 15 was heated from the heating side shown in FIG. 3 and the temperature increase at each measurement point a, b, c, d, e was measured. Here, the heating was performed for 45 minutes so that the wall surface on the heating side was uniformly heated. Heating was performed in accordance with a temperature rise curve defined as an ISO 834 curve, so that the temperature was about 580 ° C. after 5 minutes, about 680 ° C. after 10 minutes, and about 900 ° C. after 45 minutes.

耐火試験の結果、非加熱側の石膏ボード６，６に設けた測定点ａ，ｅでは、100℃近くまでは温度上昇を続けていたが、それ以降は温度上昇率が急激に減衰して、45分後であっても110℃程度にまでしか温度は上昇しなかった。 As a result of the fire resistance test, at the measurement points a and e provided on the gypsum boards 6 and 6 on the non-heating side, the temperature continued to rise up to near 100 ° C, but thereafter, the rate of temperature rise decreased rapidly, Even after 45 minutes, the temperature increased only to about 110 ° C.

さらに、主柱５の非加熱側の測定点ｂ，ｃ，ｄでは、ほとんど温度が上昇せずに、熱の伝達を確実に遮断することができた。 Further, at the measurement points b, c, d on the non-heating side of the main column 5, the temperature was hardly increased and the heat transfer could be surely cut off.

通常、壁の遮熱性能判定基準は加熱面以外の面の最も高い部分の温度が初期温度＋180℃以下、平均温度が初期温度＋140℃以下である。これに対して本発明の内装壁１５は、燃焼温度に達する部分がないため、充分な耐火性能を備えているといえる。 In general, the criteria for judging the heat insulation performance of the wall is that the temperature of the highest part of the surface other than the heating surface is the initial temperature + 180 ° C. or lower, and the average temperature is the initial temperature + 140 ° C. or lower. On the other hand, it can be said that the interior wall 15 of the present invention has sufficient fire resistance because there is no portion that reaches the combustion temperature.

また、加熱終了後の主柱５の残存寸法を測定した結果を、図４及び表１に基づいて説明する。 Moreover, the result of having measured the remaining dimension of the main pillar 5 after completion | finish of a heating is demonstrated based on FIG.

ここで、図４（ａ）は、主柱５の正面図に測定断面の位置を示した図である。また、図４（ｂ）は、主柱５の平面図に測定位置を示した図である。そして、各測定断面の各測定位置での残存寸法を表１に示す。なお、加熱前の寸法は105mmである。 Here, FIG. 4A is a diagram showing the position of the measurement cross section in the front view of the main pillar 5. FIG. 4B is a diagram showing the measurement position on the plan view of the main pillar 5. Table 1 shows the remaining dimensions of each measurement section at each measurement position. The dimension before heating is 105 mm.

表１から、石膏ボード６，６に隣接する主柱５の左右両端の残存寸法が、他の部分に比べて小さくなっているが、この部分はＬ字型遮断材８，・・・によって熱の伝達が遮断されない露出した部分であるため、他の部分よりは燃焼し易い部分といえる。

From Table 1, the remaining dimensions of the left and right ends of the main pillar 5 adjacent to the

gypsum boards

6 and 6 are smaller than those of the other parts, but this part is heated by the L-shaped blocking material 8,. Since this is an exposed portion where the transmission of is not interrupted, it can be said that the portion is more easily combusted than the other portions.

しかし、いずれの位置においても、加熱前の105mmの寸法と比べると半分以上が残存しており、所定時間内の加熱では主柱５が燃焼して消滅することはなかったといえる。 However, at any position, more than half of the size of 105 mm before heating remains, and it can be said that the main pillar 5 did not burn and disappear by heating within a predetermined time.

耐火性能とは、通常の火災において、非損傷性、遮熱性を有し、屋内側からの火災において遮炎性を有することが条件となる。ここで、非損傷性とは、構造耐力上支障のある変形、溶融、破壊その他の損傷を生じない性能をいい、遮熱性とは、加熱面以外が可燃物燃焼温度以上に温度上昇しない性能をいい、遮炎性とは、屋内側からの火災で屋外に火炎を出す原因となる亀裂その他の損傷を生じないことをいう。 The fire resistance performance is required to have non-damage and heat shielding properties in a normal fire and to have flame shielding properties in a fire from the indoor side. Here, non-damage refers to performance that does not cause deformation, melting, destruction, or other damage that hinders structural strength, and thermal insulation refers to performance that does not raise the temperature above the combustible combustion temperature except for the heated surface. Good, flame-proofing means that there is no crack or other damage that causes a flame from the indoor side to cause a flame outside.

以上の耐火試験の結果から、本発明の内装壁１５は、非損傷性、遮熱性、遮炎性を有するものといえるので、所定の耐火性能を満たすものであるといえる。 From the results of the above fire resistance test, it can be said that the interior wall 15 of the present invention has non-damage properties, heat shielding properties, and flame shielding properties, and therefore satisfies the predetermined fire resistance performance.

また、このように構成された本発明の内装壁１５は、主柱５の左右両方の側面に沿って並設柱部材７，７が立設されており、その並設柱部材７，７は石膏ボード６，・・・の裏面側に立設されている。さらに、並設柱部材７，７の主柱５側の角部には、Ｌ字型遮断材８，・・・が配置されている。 Moreover, the interior wall 15 of the present invention configured as described above has juxtaposed column members 7 and 7 erected along both the left and right side surfaces of the main column 5, and the juxtaposed column members 7 and 7 It is erected on the back side of the gypsum board 6,. Further, L-shaped blocking members 8,... Are arranged at the corners of the side column members 7, 7 on the main column 5 side.

このため、加熱によって供給された熱は、石膏ボード６，６を伝達した後に、Ｌ字型遮断材８，８によって遮断され、主柱５まで到達するには時間がかかる。また、主柱５の左右両側側面も、並設柱部材７，７によって覆われているため、石膏ボード６，６の間の空気が熱せられたとしても、その輻射熱を直接受けることがなく、側方からの燃焼を抑えることができる。 For this reason, the heat supplied by heating is interrupted by the L-shaped blocking members 8 and 8 after transmitting the gypsum boards 6 and 6, and it takes time to reach the main pillar 5. In addition, since the left and right side surfaces of the main pillar 5 are also covered by the parallel pillar members 7 and 7, even if the air between the gypsum boards 6 and 6 is heated, the radiant heat is not directly received. Combustion from the side can be suppressed.

このため、所定時間以上（耐火試験では45分間）の間、加熱に耐えることができる耐火性能を確保することができる。 For this reason, the fireproof performance which can endure heating for more than predetermined time (45 minutes in a fireproof test) is securable.

以下、前記した実施の形態の実施例２について説明する。なお、前記実施の形態又は実施例１で説明した内容と同一乃至均等な部分の説明については同一符号を付して説明する。 Hereinafter, Example 2 of the above-described embodiment will be described. The description of the same or equivalent parts as those described in the above embodiment or Example 1 will be given the same reference numerals.

前記実施の形態及び実施例１では、熱遮断部材としてＬ字型遮断材８を使用したが、この実施例２では熱遮断部材の形状及び配置箇所を変えて、壁の高さ3190mm×幅3040mmの実物大サイズの内装壁１６に対しておこなった耐火試験について説明する。 In the above embodiment and Example 1, the L-shaped blocking member 8 is used as the heat blocking member. However, in this Example 2, the shape and the arrangement location of the heat blocking member are changed, and the wall height 3190 mm × width 3040 mm. A fire resistance test performed on the full-size interior wall 16 will be described.

図５は、並設柱部材７と石膏ボード６，６の間に、熱遮断部材としての壁側遮断材１０，１０を配置した内装壁１６の平面図を示したものである。 FIG. 5 shows a plan view of the interior wall 16 in which the wall-side blocking members 10 and 10 as heat blocking members are arranged between the juxtaposed column members 7 and the gypsum boards 6 and 6.

この壁側遮断材１０，１０は、並設柱部材７の長手方向（図５紙面貫通方向）に沿って延設される矩形シート状の部材であって、その一側端は主柱５の側面に当接されているため、石膏ボード６から入った熱は壁側遮断材１０によって遮断されて、並設柱部材７及び主柱５にほとんど到達することはない。 The wall-side blocking members 10 and 10 are rectangular sheet-like members extending along the longitudinal direction of the side-by-side column members 7 (the through direction in FIG. 5), and one side end of the wall-side blocking members 10 and 10 is the main column 5. Since it is in contact with the side surface, the heat entered from the gypsum board 6 is blocked by the wall-side blocking material 10 and hardly reaches the side-by-side column member 7 and the main column 5.

また、図６は、並設柱部材７と主柱５の間に、熱遮断部材としての柱側遮断材１１を配置した内装壁１７の平面図を示したものである。 FIG. 6 shows a plan view of an interior wall 17 in which a column-side blocking member 11 as a heat blocking member is disposed between the juxtaposed column member 7 and the main column 5.

この柱側遮断材１１は、並設柱部材７の長手方向（図６紙面貫通方向）に沿って延設される矩形シート状の部材であって、その両側端は石膏ボード６，６の内側面に当接されているため、石膏ボード６から入った熱は並設柱部材７までは伝達されるが、それより先は柱側遮断材１１に遮断されて主柱５の側面にほとんど到達することはない。 This column-side blocking member 11 is a rectangular sheet-like member that extends along the longitudinal direction of the juxtaposed column members 7 (the through direction in FIG. 6). Since it is in contact with the side surface, the heat entered from the gypsum board 6 is transmitted to the side-by-side column member 7, but after that, it is blocked by the column side blocking material 11 and almost reaches the side surface of the main column 5. Never do.

耐火試験は、Ｌ字型遮断材８を配置した内装壁１５（図２）、壁側遮断材１０を配置した内装壁１６（図５）、柱側遮断材１１を配置した内装壁１７（図６）に対しておこなった。なお、比較のために図７に示したような熱遮断部材を配置しない内装壁２１に対しても耐火試験を行なった。 In the fire resistance test, the interior wall 15 (FIG. 2) in which the L-shaped shielding material 8 is disposed, the interior wall 16 (FIG. 5) in which the wall-side shielding material 10 is disposed, and the interior wall 17 (in FIG. 5) in which the column-side shielding material 11 is disposed. 6). For comparison, a fire resistance test was also performed on the interior wall 21 without the heat blocking member as shown in FIG.

この実施例でおこなった耐火試験では、遮熱性、遮炎性、及び非損傷性について確認した。ここで、遮熱性については、初期温度を25℃として内装壁１５，１６，１７，２１の一側面から加熱をおこない、非加熱側の壁面の温度が180℃以下であれば遮熱性が有る（○）とした。 In the fire resistance test conducted in this example, heat insulation, flame insulation, and non-damage were confirmed. Here, as for the heat shielding property, the initial temperature is set to 25 ° C., heating is performed from one side surface of the interior walls 15, 16, 17, and 21, and if the temperature of the wall surface on the non-heating side is 180 ° C. or less, the heat shielding property is obtained ( ○).

実施例２の耐火試験の結果を表２に示した。なお、45分の加熱時間に到達する前に燃焼して判定できなかったものは（判定不能）とした。 The results of the fire resistance test of Example 2 are shown in Table 2. In addition, the thing which could not be determined by burning before reaching the heating time of 45 minutes was determined to be (not determined).

以上の結果から、最も耐火性能が高いのは、Ｌ字型遮断材８を配置した内装壁１５であるといえるが、壁側遮断材１０を配置した内装壁１６及び柱側遮断材１１を配置した内装壁１７についても、所望する耐火性能が得られた。

From the above results, it can be said that the interior wall 15 in which the L-shaped barrier material 8 is disposed has the highest fire resistance performance, but the interior wall 16 in which the wall-side barrier material 10 is disposed and the column-side barrier material 11 are disposed. Also for the interior wall 17, the desired fire resistance performance was obtained.

また、並設柱部材７を配置しただけで、まったく熱遮断部材を配置しなかった内装壁２１は、加熱開始後39分で最高温度が180℃に達したため、所望する耐火性能を得ることはできなかった。 In addition, the interior wall 21 in which only the parallel column members 7 are arranged and no heat blocking member is arranged has reached a maximum temperature of 180 ° C. in 39 minutes after the start of heating, so that it is possible to obtain a desired fire resistance performance. could not.

なお、他の構成及び作用効果については、前記実施の形態又は実施例１と略同様であるので説明を省略する。 Other configurations and functions and effects are substantially the same as those of the above-described embodiment or Example 1, and thus description thereof is omitted.

以下、前記した実施の形態の実施例３について説明する。なお、前記実施の形態及び実施例で説明した内容と同一乃至均等な部分の説明については同一符号を付して説明する。 Hereinafter, Example 3 of the above-described embodiment will be described. The description of the same or equivalent parts as those described in the embodiments and examples will be given with the same reference numerals.

前記実施の形態及び実施例では、間仕切りとして内装壁１５，１６，１７を使用する場合について説明したが、この実施例では、外壁の内側に設ける内装壁１８について説明する。 In the embodiment and the examples, the case where the interior walls 15, 16, and 17 are used as the partitions has been described. In this example, the interior wall 18 provided inside the outer wall will be described.

図８には、外装部材１３の内側面側に内装壁１８を設けた平面図を示した。 In FIG. 8, the top view which provided the interior wall 18 in the inner surface side of the exterior member 13 was shown.

この内装壁１８は、壁部材としての石膏ボード６，６と、柱部材としての主柱５と、その主柱５の側面に沿って左右両側に立設される並設柱部材１２，１２と、熱遮断部材としてのＬ字型遮断材８，８と、石膏ボード６と外装部材１３との間に主柱５と間隔を置いて配置される間柱９，９とによって主に構成される。 The interior wall 18 includes gypsum boards 6 and 6 as wall members, a main column 5 as a column member, and side-by-side column members 12 and 12 that are erected on the left and right sides along the side surface of the main column 5. The L-shaped blocking members 8 and 8 as heat blocking members, and the intermediate columns 9 and 9 disposed at a distance from the main column 5 between the gypsum board 6 and the exterior member 13 are mainly configured.

この並設柱部材１２は、石膏ボード６と外装部材１３との間の閉塞空間に露出する主柱５の側面を覆う幅に形成される。 This juxtaposed column member 12 is formed to have a width that covers the side surface of the main column 5 exposed in the closed space between the gypsum board 6 and the exterior member 13.

また外装部材１３には、サイディングボード等の耐火性に優れた材料が使用され、内側面には横方向に間隔をおいて上下方向に延設される縦胴縁１４，・・・が取り付けられる。 Further, the exterior member 13 is made of a material having excellent fire resistance such as a siding board, and the inner side surface is attached with vertical trunk edges 14 extending in the vertical direction at intervals in the horizontal direction. .

図９は、並設柱部材１２と石膏ボード６の間に、熱遮断部材としての壁側遮断材１０を配置した内装壁１９の平面図を示したものである。 FIG. 9 is a plan view of an interior wall 19 in which a wall-side blocking material 10 as a heat blocking member is disposed between the juxtaposed column member 12 and the gypsum board 6.

この壁側遮断材１０の一側端は、主柱５の側面に当接されているため、石膏ボード６から入った熱は壁側遮断材１０によって遮断されて、並設柱部材１２及び主柱５にほとんど到達することはない。 Since one side end of the wall-side shielding material 10 is in contact with the side surface of the main pillar 5, the heat entered from the gypsum board 6 is blocked by the wall-side shielding material 10, so The column 5 is hardly reached.

また、図１０は、並設柱部材１２と主柱５の間に、熱遮断部材としての柱側遮断材１１を配置した内装壁２０の平面図を示したものである。 FIG. 10 is a plan view of the interior wall 20 in which the column-side blocking member 11 as a heat blocking member is disposed between the juxtaposed column member 12 and the main column 5.

この柱側遮断材１１の一側端は、石膏ボード６の内側面に当接されているため、石膏ボード６から入った熱は、並設柱部材１２までは伝達されるが、それより先は柱側遮断材１１に遮断されて主柱５の側面にほとんど到達することはない。 Since one side end of the pillar side blocking material 11 is in contact with the inner surface of the gypsum board 6, the heat entered from the gypsum board 6 is transmitted to the juxtaposed column member 12, but before that. Is blocked by the column-side blocking material 11 and hardly reaches the side surface of the main column 5.

耐火試験は、Ｌ字型遮断材８を配置した内装壁１８（図８）、壁側遮断材１０を配置した内装壁１９（図９）、柱側遮断材１１を配置した内装壁２０（図１０）に対しておこなった。なお、比較のために図１１に示したような熱遮断部材を配置しない内装壁２２に対しても耐火試験を行なった。 In the fire resistance test, an interior wall 18 (FIG. 8) in which the L-shaped shielding material 8 is arranged, an interior wall 19 (FIG. 9) in which the wall-side shielding material 10 is arranged, and an interior wall 20 in which the column-side shielding material 11 is arranged (see FIG. 10). For comparison, a fire resistance test was also performed on the interior wall 22 without the heat blocking member as shown in FIG.

この実施例でおこなった耐火試験では、遮熱性、遮炎性、及び非損傷性について確認した。 In the fire resistance test conducted in this example, heat insulation, flame insulation, and non-damage were confirmed.

実施例３の耐火試験の結果を表３，４に示した。ここで、表３は内装壁側から加熱をおこなった結果を示したもので、表４は外装部材１３側から加熱をおこなった結果を示したものである。なお、45分の加熱時間に到達する前に燃焼して判定できなかったものは（判定不能）とした。 The results of the fire resistance test of Example 3 are shown in Tables 3 and 4. Here, Table 3 shows the result of heating from the interior wall side, and Table 4 shows the result of heating from the exterior member 13 side. In addition, the thing which could not be determined by burning before reaching the heating time of 45 minutes was determined to be (not determined).

以上の結果から、最も耐火性能が高いのは、Ｌ字型遮断材８を配置した内装壁１８であるといえるが、壁側遮断材１０を配置した内装壁１９及び柱側遮断材１１を配置した内装壁２０についても、所望する耐火性能が得られた。

From the above results, it can be said that the interior wall 18 in which the L-shaped barrier material 8 is disposed has the highest fire resistance performance, but the interior wall 19 in which the wall-side barrier material 10 is disposed and the column-side barrier material 11 are disposed. Also for the interior wall 20, the desired fire resistance was obtained.

また、並設柱部材１２を配置しただけで、まったく熱遮断部材を配置しなかった内装壁２２は、屋内加熱の場合は加熱開始後41分で損傷がみられ、屋外加熱の場合は加熱開始後42分で最高温度が180℃に達したため、所望する耐火性能を得ることはできなかった。 In addition, the interior wall 22 in which only the juxtaposed column members 12 are arranged and no heat blocking member is arranged is damaged 41 minutes after the start of heating in the case of indoor heating, and in the case of outdoor heating, the heating starts. Since the maximum temperature reached 180 ° C. in 42 minutes later, the desired fire resistance could not be obtained.

以上、図面を参照して、本発明の最良の実施の形態を詳述してきたが、具体的な構成は、この実施の形態に限らず、本発明の要旨を逸脱しない程度の設計的変更は、本発明に含まれる。 Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are possible. Are included in the present invention.

例えば、前記実施の形態及び実施例では、内装壁１５〜２０の前面は室内側に露出させるものとして説明したが、このような構成に限定されるものではなく、前記柱部材に接合される壁部材にその柱部材の前面が覆われていなければ、内装壁１５〜２０の前面にユニットバスを設置したり、押入れなどの収納部を構築したりして、室内から内装壁１５〜２０を直接見ることができない構造にしてもよい。 For example, in the said embodiment and Example, although the front surface of the interior walls 15-20 was demonstrated as what is exposed indoors, it is not limited to such a structure, The wall joined to the said column member If the member does not cover the front surface of the pillar member, a unit bath is installed on the front surface of the interior walls 15 to 20 or a storage part such as a closet is constructed to directly connect the interior walls 15 to 20 from the room. A structure that cannot be seen may be used.

本発明の最良の実施の形態の内装壁を示した斜視図である。It is the perspective view which showed the interior wall of the best embodiment of this invention. 本発明の最良の実施の形態の内装壁を示した平面図である。It is the top view which showed the interior wall of the best embodiment of this invention. 実施例１の耐火試験に使用した内装壁を示した平面図である。3 is a plan view showing an interior wall used in the fire resistance test of Example 1. FIG. （ａ）実施例１の耐火試験の残存寸法の測定断面を示した正面図であり、（ｂ）実施例１の耐火試験の残存寸法の測定位置を示した平面図である。(A) It is the front view which showed the measurement cross section of the remaining dimension of the fire resistance test of Example 1, (b) The top view which showed the measurement position of the remaining dimension of the fire resistance test of Example 1. 実施例２の壁側遮断材を配置した内装壁を示した平面図である。It is the top view which showed the interior wall which has arrange | positioned the wall side interruption | blocking material of Example 2. FIG. 実施例２の柱側遮断材を配置した内装壁を示した平面図である。It is the top view which showed the interior wall which has arrange | positioned the column side interruption | blocking material of Example 2. FIG. 実施例２で耐火試験の比較例として使用した内装壁を示した平面図である。6 is a plan view showing an interior wall used as a comparative example of a fire resistance test in Example 2. FIG. 実施例３の外壁の内側に設けた内装壁を示した平面図である。6 is a plan view showing an interior wall provided inside the outer wall of Example 3. FIG. 実施例３の壁側遮断材を配置した内装壁を示した平面図である。It is the top view which showed the interior wall which has arrange | positioned the wall side interruption | blocking material of Example 3. FIG. 実施例３の柱側遮断材を配置した内装壁を示した平面図である。It is the top view which showed the interior wall which has arrange | positioned the column-side shielding material of Example 3. 実施例３で耐火試験の比較例として使用した内装壁を示した平面図である。6 is a plan view showing an interior wall used as a comparative example of a fire resistance test in Example 3. FIG. 従来の耐火構造の内装壁を示した平面図である。It is the top view which showed the interior wall of the conventional fireproof structure.

符号の説明Explanation of symbols

５主柱（柱部材）
６石膏ボード（壁部材）
７，１２並設部材
８Ｌ字型遮断材（熱断熱部材）
１０壁側遮断材（熱断熱部材）
１１柱側遮断材（熱断熱部材）
１５〜２０内装壁（内装壁構造） 5 Main pillar (column member)
6 Gypsum board (wall member)
7, 12 Side-by-side member 8 L-shaped blocking material (thermal insulation member)
10 Wall side blocking material (thermal insulation member)
11 Column side blocking material (thermal insulation member)
15-20 interior wall (interior wall structure)

Claims

壁部材に接合される木質系の柱部材の前面が、該壁部材に覆われることなく室内側に露出する内装壁構造であって、前記壁部材の裏面側に前記柱部材の側面に沿って立設される木質系の並設柱部材と、前記壁部材の裏面と前記並設柱部材の間又は前記並設柱部材と前記柱部材の間の少なくとも一方に介在されて、その間からの前記柱部材側面への熱の伝達を遮断する熱遮断部材とを有することを特徴とする内装壁構造。 An interior wall structure in which a front surface of a wooden column member joined to a wall member is exposed to the indoor side without being covered by the wall member, and along the side surface of the column member on the back surface side of the wall member A wood-based juxtaposed column member erected, and interposed between at least one of the rear surface of the wall member and the juxtaposed column member or between the juxtaposed column member and the column member, An interior wall structure comprising: a heat blocking member that blocks heat transfer to the side surface of the column member.

前記並設柱部材は前記柱部材の側面に固定されており、前記熱遮断部材は加熱によって膨張する熱膨張性耐火材であることを特徴とする請求項１に記載の内装壁構造。

The interior wall structure according to claim 1, wherein the juxtaposed column members are fixed to side surfaces of the column members, and the heat blocking member is a thermally expandable refractory material that expands by heating.