JP2011026953A - Compartmentation wall - Google Patents

Compartmentation wall Download PDF

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JP2011026953A
JP2011026953A JP2010238496A JP2010238496A JP2011026953A JP 2011026953 A JP2011026953 A JP 2011026953A JP 2010238496 A JP2010238496 A JP 2010238496A JP 2010238496 A JP2010238496 A JP 2010238496A JP 2011026953 A JP2011026953 A JP 2011026953A
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stud
wall
board
fire
temperature
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Keigo Karashina
恵吾 唐品
Tomoya Hasegawa
知哉 長谷川
Akira Nakatani
晃 中谷
Koji Yamagata
浩司 山片
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Yoshino Gypsum Co Ltd
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Yoshino Gypsum Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To significantly improve workability with respect to a compartmentation wall of dry construction method which is installed in a condition where construction is extremely difficult from one side. <P>SOLUTION: The fireproof structure wall 1 of dry construction method includes a vertical steel stud 10 aligned and arranged along a wall core; and noncombustible board materials 2 and 3 attached to only one side of the steel stud. Each firing temperature of the stud and the board materials is 1000°C or higher, and when the ambient temperature on an optional side of the wall body reaches a high temperature of about 950°C, the board materials on the other side of the wall body are kept up to a temperature 200°C and at 160°C or lower in average. The board materials are fixed to the stud by a noncombustible and heat resisting locking tool 8. The locking tool maintains the cohesion of the board materials and the stud, when the ambient temperature on one side area of the wall body reaches a high temperature of 900°C or higher, and also suppresses the thermal deformation of the stud. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、乾式工法の防火区画壁に関するものであり、より詳細には、室と室、または室と設備空間とを仕切る屋内非耐力壁として施工される防火区画壁に関するものである。   The present invention relates to a fireproof partition wall of a dry construction method, and more particularly to a fireproof partition wall constructed as an indoor non-bearing wall that partitions a room and a room or a room and an equipment space.

建築物の壁体は、建築物の用途及び規模等の建築物単体又は固有の条件、建築物の敷地及び配置等の集団的又は都市計画的な条件に基づき、強度、防耐火性能、耐震性能等の諸性能に関し、建築基準法の下で各種規制を受ける。また、国土交通省、住宅金融公庫、住宅・都市整備公団等の各公的機関は、標準仕様書又は特記仕様書等により、壁体の諸性能に関する基準を独自に定めており、このような機関の建築物では、壁体の性質及び種別等に応じて、更に詳細な断熱基準、遮音基準、防耐火基準、耐震基準等が適用される場合がある。   Walls of buildings are based on collective or city-planned conditions such as building use and scale, such as the use and scale of the building, or the site and layout of the building, strength, fireproof performance, seismic performance As for various performances, etc., it is subject to various regulations under the Building Standard Law. In addition, each public organization, such as the Ministry of Land, Infrastructure, Transport and Tourism, Housing Finance Corporation, Housing and Urban Development Corporation, has established its own standards for various performances of walls according to standard specifications or special specifications. For institutional buildings, more detailed heat insulation standards, sound insulation standards, fireproof standards, earthquake resistance standards, etc. may be applied depending on the nature and type of the wall.

特に、建築物壁体の防耐火性能については、内装制限及び防耐火性能が建築基準法に厳格に規定されているので、壁体の構造及び構成材料は、建築基準法に規定された内装制限及び防耐火性能を遵守しなければならない。例えば、建築基準法は、建築物の用途、規模及び地域指定等に基づき、耐火建築物又は準耐火建築物として建築物全体の構造を規定するばかりでなく、建築物の用途、規模、延焼防止、避難、排煙、消火等の観点より、内装材料、内壁構造、建具構造、配管貫通部等の建築物内部の各部構成に関し、防耐火性能を規制している。ここに、現行の建築基準法の下では、建築物の内装材料は、不燃性能に関し、所定の不燃等級(不燃材、準不燃材及び難燃材)に分類され、建築物の壁体は、防耐火性能に関し、所定の構造種別(耐火構造、準耐火構造、防火構造、準防火構造等)に分類されている。   In particular, with regard to fireproof performance of building walls, interior restrictions and fireproof performance are strictly stipulated in the Building Standards Law, so the structure and constituent materials of the walls are limited by the interior restrictions specified in the Building Standards Law. And must comply with fireproof performance. For example, the Building Standards Act not only prescribes the structure of a whole building as a fireproof building or semi-fireproof building based on the use, scale, and area designation of the building, but also the use, scale, and prevention of fire spread of the building. From the viewpoints of evacuation, smoke removal, fire extinguishing, etc., fireproof performance is regulated with respect to each internal structure of the building, such as interior materials, inner wall structures, joinery structures, and pipe penetrations. Here, under the current Building Standards Law, building interior materials are classified into predetermined non-combustible grades (non-combustible material, semi-incombustible material and flame retardant material) with respect to non-combustible performance, and the building wall is The fireproof performance is classified into predetermined structural types (fireproof structure, semi-fireproof structure, fireproof structure, semifireproof structure, etc.).

他方、建築物の軽量化の観点より、軽量鉄骨製スタッドの両面に石膏ボード又は珪酸カルシウム板等の耐火性ボード材料を取付けた構造を有する乾式工法の耐火間仕切壁が、防火区画、排煙区画又は竪穴区画等の防火区画壁として使用されている。   On the other hand, from the viewpoint of reducing the weight of the building, the fire-resistant partition walls of the dry construction method having a structure in which a fire-resistant board material such as gypsum board or calcium silicate board is attached to both sides of lightweight steel studs are fireproof compartments and smoke exhaust compartments. Or it is used as a fire protection compartment wall such as a pit compartment.

図4は、エレベータシャフト、階段室、ダクトシャフト(DS)又は配管シャフト(PS)等の竪穴Aを区画する防火区画壁として施工された従来構造の耐火間仕切壁Wを示す縦断面図である。図4に示す間仕切壁Wの施工は、軽量鉄骨製スタッドSを上下の床スラブ又は梁F1:F2の間に垂直に建込み、スタッドSの両面に石膏ボード等のボード材料Bを二重張りした構造のものである。この構成の耐火間仕切壁は、乾式工法の防火区画壁として長年に亘って広く使用されてきた。   FIG. 4 is a longitudinal sectional view showing a fireproof partition wall W having a conventional structure constructed as a fireproof partition wall for partitioning a hole A such as an elevator shaft, a staircase, a duct shaft (DS), or a piping shaft (PS). The partition wall W shown in FIG. 4 is constructed by installing a lightweight steel stud S vertically between upper and lower floor slabs or beams F1: F2, and double-plying a board material B such as a gypsum board on both sides of the stud S. Of the structure. The fireproof partition wall having this configuration has been widely used for many years as a fireproof partition wall of a dry construction method.

特開平11−115011号公報JP 11-1115011 A

しかしながら、このような両面施工型の耐火間仕切壁では、竪穴側のボード材料は、シャフト内から施工しなければならず、このため、極めて施工性又は施工効率が悪い作業環境の下でボード張り工程を実施せざるを得ない。殊に、ダクトシャフト又は配管シャフト等では、十分な作業スペースを確保し難く、竪穴側からのボード張り作業は、極めて作業性が悪い。また、比較的作業スペースが広いエレベータシャフト等であっても、仮設の作業足場をシャフト内に構築しなければならず、付加的且つ一時的な仮設足場の設置が必要となり、これは、特に中高層建築物の建築工事にあっては、作業上且つ工期的に非常に不利である。   However, in such a fireproof partition wall of double-sided construction type, the board material on the side of the hole must be constructed from the inside of the shaft, and therefore the board tensioning process under a work environment with extremely poor workability or construction efficiency. Must be carried out. In particular, with a duct shaft or piping shaft, it is difficult to secure a sufficient working space, and the work of tensioning the board from the side of the hole is extremely poor. Moreover, even for an elevator shaft or the like having a relatively large work space, a temporary work scaffold must be built in the shaft, and an additional and temporary temporary scaffold is required. The construction work of a building is very disadvantageous in terms of work and construction schedule.

このため、多くの場合、コンクリートブロック等を用いた湿式工法の組積造によって耐火間仕切壁をシャフト外から構築したり、あるいは、配管又はダクト等の床貫通部に防火ダンパーを設置し且つ貫通部に耐火処理材を充填することなどにより、床レベルに水平な防火区画を形成し、これにより、竪穴区画の法的規制を受けないように設計変更するなどの対策が採られている。   For this reason, in many cases, a fire-resistant partition wall is constructed from the outside of the shaft by masonry of a wet method using a concrete block or the like, or a fire-proof damper is installed in a floor penetration part such as a pipe or a duct and the penetration part For example, a fireproof section that is horizontal to the floor level is formed by filling a fireproofing material into the floor, thereby taking measures such as changing the design so as not to be subject to the legal regulation of the pothole section.

本発明は、かかる事情に鑑みてなされたものであり、その目的とするところは、エレベータシャフト、ダクトシャフト、配管シャフト等の竪穴の如く、一方の側からは極端に施工困難な条件に設置される乾式工法の防火区画壁に関し、その施工性を大幅に改善することができる防火区画壁を提供することにある。   The present invention has been made in view of such circumstances, and the object of the present invention is to be installed on conditions that are extremely difficult to construct from one side, such as a hole in an elevator shaft, a duct shaft, a piping shaft, or the like. An object of the present invention is to provide a fire prevention compartment wall that can greatly improve its workability.

上記目的を達成するために、本発明は、室と室、または室と設備空間とを仕切る屋内非耐力壁であって、鋼製スタッド及び不燃性ボード材料により形成される乾式工法の防火区画壁において、
壁芯に沿って整列配置した垂直な鋼製スタッドと、
鋼製スタッドの片面にのみ取付けられた不燃性ボード材料とからなり、
前記スタッド及びボード材料の各着火温度は、1000℃以上の温度であり、
防火区画壁の任意の側の雰囲気温度が950℃の高温に達したときに、防火区画壁の他方の側における前記ボード材料の表面温度は、最高200℃以下、平均160℃以下の範囲内の温度を維持し、
前記ボード材料は、不燃性且つ耐熱性を有する係止具によって前記スタッドに固定され、
該係止具は、耐火構造壁の片側領域の雰囲気温度が900℃以上の高温に達したときに、前記ボード材料及びスタッドの一体性を保持するとともに、前記スタッドの熱変形を抑制することを特徴とする防火区画壁を提供する。
In order to achieve the above object, the present invention provides an indoor non-bearing wall that partitions a room and a room, or a room and an equipment space, and is formed of a steel stud and a non-combustible board material. In
Vertical steel studs aligned along the wall core,
Composed of non-combustible board material attached only to one side of the steel stud,
Each ignition temperature of the stud and board material is a temperature of 1000 ° C. or more,
When the ambient temperature on any side of the fire compartment wall reaches a high temperature of 950 ° C., the surface temperature of the board material on the other side of the fire compartment wall is within a range of up to 200 ° C. and an average of 160 ° C. or less. Maintain the temperature,
The board material is fixed to the stud by a nonflammable and heat-resistant locking tool,
When the atmospheric temperature of the one side region of the fire-resistant structure wall reaches a high temperature of 900 ° C. or higher, the locking device maintains the integrity of the board material and the stud and suppresses thermal deformation of the stud. Providing a feature fire wall.

乾式工法の防火区画壁に対する従来の概念は、スタッドの熱変形により壁体が異常に変形し、ボードが崩落し、更には、壁体が崩壊する事態を懸念し、壁体の両面に不燃性ボード材料を取付ける両面施工形態の構造にしなければならないというものであったが、本発明者の研究によれば、高温加熱時には、スタッドは、主として面外方向の応力を負担し、ボード材料は、主として面内方向の応力を負担し、スタッド及びボード材料を相互連結する係止具は、スタッドの過剰な熱変形を制限し、スタッドを所定位置に保持する作用を発揮する。このため、上記構成の防火区画壁は、高温加熱時にスタッド及びボード材料の一体性を保持する。従って、片面施工型の壁体であっても、これらの壁体構成要素の協動作用により、防火区画壁として十分な耐火性能が得られる。   The conventional concept for the fire protection compartment wall of the dry construction method is that the wall body is deformed abnormally due to thermal deformation of the stud, the board collapses, and furthermore, the wall body collapses. According to the study of the present inventor, the stud mainly bears stress in the out-of-plane direction, and the board material is A locking tool that bears primarily stress in the in-plane direction and interconnects the stud and board material limits the excessive thermal deformation of the stud and acts to hold the stud in place. For this reason, the fire-proof partition wall of the said structure maintains the integrity of a stud and board material at the time of high temperature heating. Therefore, even if it is a single-sided construction type wall body, sufficient fire resistance performance as a fire protection compartment wall can be obtained by the cooperative operation of these wall body components.

本発明の上記構成によれば、防火区画壁は、片面施工可能な乾式構造の壁体であり、床版がない竪穴内に仮設足場を設置することなく、また、狭小なシャフト内スペースからボード張り作業を行うこともなく、竪穴の外側からスタッド及びボード材料を施工し、防火区画壁を施工することができる。本発明の構成は又、内装工事が実質的に不要な倉庫等の室と、内装工事を必要とする室とを仕切る防火区画壁として、有利に使用することができる。この場合、内装工事が不要な倉庫等の室の壁面には、内装工事を施すことなく防火区画壁を形成することができるので、工事費低減及び工期短縮の観点より、極めて有益である。   According to the above configuration of the present invention, the fire prevention partition wall is a dry structure wall body that can be constructed on one side, without installing a temporary scaffolding in a hole without a floor slab, and from a narrow space in the shaft. Without performing the tension work, it is possible to construct the stud and board material from the outside of the pothole and to construct the fire-proof compartment wall. The configuration of the present invention can also be advantageously used as a fire prevention partition wall that partitions a room such as a warehouse where interior work is substantially unnecessary and a room that requires interior work. In this case, since a fire prevention partition wall can be formed on the wall surface of a room such as a warehouse that does not require interior work without performing interior work, it is extremely beneficial from the viewpoint of reducing construction costs and shortening the work period.

以上説明した如く、本発明の上記構成によれば、エレベータシャフト、設備シャフト等の竪穴の如く、一方の側からは極端に施工困難な条件に設置される乾式工法の防火区画壁に関し、その施工性を大幅に改善することができる。   As described above, according to the above configuration of the present invention, it relates to a fire-proof partition wall of a dry construction method that is installed under extremely difficult conditions from one side, such as a shaft hole of an elevator shaft, an equipment shaft, etc. The sex can be greatly improved.

本発明に係る防火区画壁の実施形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows embodiment of the fire prevention division wall which concerns on this invention. 図1に示す防火区画壁の平面図である。It is a top view of the fire prevention division wall shown in FIG. 図1及び図2に示す防火区画壁の部分破断斜視図である。FIG. 3 is a partially cutaway perspective view of a fire protection compartment wall shown in FIGS. 1 and 2. 従来の防火区画壁の構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the conventional fire prevention division wall.

好ましくは、上記ボード材料は、少なくとも2層構造に積層され、各ボード材料は、加熱時におけるボード素材の結晶水の蒸発気化熱によりボード自体の温度上昇を抑制する性質を有する不燃性ボード、例えば、石膏ボードからなり、ボードは、好適には、9.5〜25mmの範囲内の板厚、例えば、9.5mm、12.5mm、15mm、18mm、21mm又は25mmの板厚(JIS規格)を有する。更に好ましくは、上記係止具は、スタッドに沿って100〜300mmの間隔に配置される。   Preferably, the board material is laminated in at least a two-layer structure, and each board material has a property of suppressing the temperature rise of the board itself by heat of evaporation of crystal water of the board material during heating, for example, The board preferably has a thickness in the range of 9.5 to 25 mm, for example, a thickness of 9.5 mm, 12.5 mm, 15 mm, 18 mm, 21 mm or 25 mm (JIS standard). Have. More preferably, the said locking tool is arrange | positioned at 100-300 mm space | interval along a stud.

一般に、石膏ボード等の建築内装工事用ボードには、内部結晶水の蒸発気化により生じるボード自体の吸熱反応により、火災時におけるボードの温度上昇を抑制するという性質がある。しかし、このような結晶水の蒸発気化は、同時に、ボード材料の体積収縮を生じさせるので、ボード材料同士の継目には、体積収縮に伴う隙間が生じ易い。殊に、本発明に係る片面施工型の防火区画壁では、この種の隙間の発生により、壁体の耐火性能が低下する事態が懸念される。しかしながら、ボード材料を2層以上に積層した場合、各層のボード材料の目地又は継目を壁芯方向に互いにずれた位置に配置したり、或いは、目地又は継目を縦横に交差させることができる。即ち、上記ボード材料を少なくとも2層構造に積層することにより、上述の隙間発生に伴う耐火性能の劣化を未然に防止すべく、各層のボード継目の隙間が壁体を貫通しないように予め対策することができる。   Generally, a board for building interior work such as a plaster board has a property of suppressing an increase in the temperature of the board at the time of a fire due to an endothermic reaction of the board itself caused by evaporation of internal crystal water. However, such evaporation and evaporation of crystal water causes volume contraction of the board material at the same time. Therefore, a gap accompanying the volume contraction is likely to occur at the joint between the board materials. In particular, in the one-side construction type fire prevention compartment wall according to the present invention, there is a concern that the fire resistance performance of the wall body deteriorates due to the generation of this kind of gap. However, when the board material is laminated in two or more layers, the joints or joints of the board materials of each layer can be arranged at positions shifted from each other in the wall core direction, or the joints or joints can be crossed vertically and horizontally. That is, by laminating the board material in at least a two-layer structure, measures are taken in advance so that the gap of the board seam of each layer does not penetrate the wall body in order to prevent the deterioration of the fire resistance due to the occurrence of the gap. be able to.

以下、添付図面を参照して、本発明に係る防火区画壁の実施形態について、詳細に説明する。
図1及び図2は、本発明に係る防火区画壁の実施形態を示す縦断面図及び平面図であり、図3は、図1及び図2に示す防火区画壁の部分破断斜視図である。
Hereinafter, with reference to an accompanying drawing, an embodiment of a fire protection division wall concerning the present invention is described in detail.
FIGS. 1 and 2 are a longitudinal sectional view and a plan view showing an embodiment of a fire prevention compartment wall according to the present invention, and FIG. 3 is a partially broken perspective view of the fire prevention compartment wall shown in FIGS. 1 and 2.

本実施形態の防火区画壁1は、図1及び図2に示す如く、竪穴50の縁に隣接して鉄筋コンクリート床スラブF1上に配置され、竪穴50を防火上区画する竪穴区画を構成する。防火区画壁1の下端部は、床スラブF1に支持され、防火区画壁1の上端部は、上階の鉄筋コンクリート床スラブF2に固定される。防火区画壁1の軸組は、鋼製スタッド10、床ランナ11及び天井ランナ12により構成される。スタッド10は、軽量鉄骨製のチャンネル型部材からなり、床ランナ11及び天井ランナ12は、軽量溝型鋼からなる。ランナ11、12は、アンカーボルト等の係止具13によって床スラブF1、F2に夫々固定され、スタッド10の下端部及び上端部は、床ランナ11及び天井ランナ12に夫々係止する。スタッド10の間隔は、300〜600mm程度の寸法に設定された所定間隔(例えば、455mm間隔)を隔てて竪穴50の縁に整列し、床スラブF1、F2の間に垂直に立設する。   As shown in FIGS. 1 and 2, the fire prevention partition wall 1 of the present embodiment is disposed on the reinforced concrete floor slab F <b> 1 adjacent to the edge of the pothole 50, and constitutes a pothole section that partitions the pothole 50 on fire prevention. The lower end portion of the fire prevention partition wall 1 is supported by the floor slab F1, and the upper end portion of the fire prevention partition wall 1 is fixed to the reinforced concrete floor slab F2 on the upper floor. The shaft set of the fire prevention partition wall 1 is composed of a steel stud 10, a floor runner 11, and a ceiling runner 12. The stud 10 is made of a lightweight steel frame type member, and the floor runner 11 and the ceiling runner 12 are made of lightweight grooved steel. The runners 11 and 12 are respectively fixed to the floor slabs F1 and F2 by a locking tool 13 such as an anchor bolt, and the lower end and the upper end of the stud 10 are locked to the floor runner 11 and the ceiling runner 12, respectively. The distance between the studs 10 is aligned with the edge of the hole 50 with a predetermined distance (for example, a distance of 455 mm) set to a size of about 300 to 600 mm, and is erected vertically between the floor slabs F1 and F2.

下貼ボード2が、室内側からスクリュービス8及び接着剤によってスタッド10の片面に取付けられる。ボード2は、横張り方向に配置され、ボード2の突付け目地20が、水平に延びる。スクリュービス8は、スタッド10に沿って高さ方向に150〜250mmの間隔、例えば、200mm間隔に配置される。上貼ボード3が、ビス9又はステープル(図示せず)によって下地ボード2の表面に室内側から固定される。ボード2は、縦張り方向に配置され、突付け目地30が、垂直方向に延び、かくして、ボード2、3の各目地は、互いに交差する。本実施形態では、ボード2、3として、板厚21mmの石膏ボード又は石膏板が使用される。上貼ボード3の室内側壁面には、クロス又は塗装等の内装仕上が施され、内装仕上面4が室内側に露出する。なお、ボード2、3として、上記石膏ボードと同等の板厚を有する硬質石膏板(比重約1.25)又はガラス繊維補強石膏板(比重約1.0)を使用しても良い。   The underlay board 2 is attached to one side of the stud 10 with screw screws 8 and an adhesive from the indoor side. The board 2 is arranged in the horizontal direction, and the butt joint 20 of the board 2 extends horizontally. The screw screws 8 are arranged at intervals of 150 to 250 mm in the height direction along the stud 10, for example, at intervals of 200 mm. The top paste board 3 is fixed to the surface of the base board 2 from the room side with screws 9 or staples (not shown). The board 2 is arranged in the longitudinal direction, and the butt joints 30 extend in the vertical direction, and thus the joints of the boards 2 and 3 intersect each other. In the present embodiment, a plaster board or a plaster board having a thickness of 21 mm is used as the boards 2 and 3. The interior side wall surface of the upper paste board 3 is subjected to interior finish such as cloth or painting, and the interior finish surface 4 is exposed to the indoor side. In addition, you may use the hard gypsum board (specific gravity about 1.25) or the glass fiber reinforced gypsum board (specific gravity about 1.0) which has board thickness equivalent to the said gypsum board as the boards 2 and 3.

図1に示す如く、床仕上材6が、床スラブF1上に施工され、巾木7が、防火区画壁1の下端縁に取付けられる。巾木7は、仕上ボード3の下端部に配置されたビス9のビス頭を室内側から被覆し、下端部のビス頭は、巾木7によって隠蔽される。巾木7として、汎用の既製巾木、例えば、ビニール巾木等を使用し得る。   As shown in FIG. 1, the floor finishing material 6 is applied on the floor slab F <b> 1, and the baseboard 7 is attached to the lower end edge of the fire protection compartment wall 1. The baseboard 7 covers the screw head of the screw 9 arranged at the lower end portion of the finishing board 3 from the indoor side, and the screw head at the lower end portion is concealed by the baseboard 7. As the baseboard 7, a general-purpose ready-made baseboard, for example, a vinyl baseboard or the like can be used.

天井軽鉄下地Cが、上階床スラブF2に懸吊され、天井仕上材5が、天井軽鉄下地Cに取付けられる。天井仕上材5は、天井廻り縁等の見切り縁(図示せず)を介して仕上ボード3の室内側壁面に接合する。廻り縁として、樹脂又は金属製の既製見切り縁又はジョイナーや、木材の加工品を使用し得る。所望により、天井廻り縁部分に目透かし目地を形成し、或いは、コーキング材又はシーリング材を充填したシール材充填目地を形成しても良い。   The ceiling light iron base C is suspended from the upper floor slab F2, and the ceiling finishing material 5 is attached to the ceiling light iron base C. The ceiling finishing material 5 is joined to the indoor side wall surface of the finishing board 3 via a parting edge (not shown) such as an edge around the ceiling. As the peripheral edge, a ready-made parting edge or joiner made of resin or metal, or a processed product of wood can be used. If desired, a watermark joint may be formed at the edge portion around the ceiling, or a sealing material filling joint filled with a caulking material or a sealing material may be formed.

本発明者は、このような防火区画壁の耐火試験を実施したところ、上記構成の耐火構造1は、所期の耐火性能を発揮した。この耐火試験においては、厚さ21mmの石膏ボードをボード2、3として軽量鉄骨製スタッド10に片面張りしてなる防火区画壁1が、供試体として使用され、防火区画壁1の片面が、ガス燃焼式加熱炉の炉内に面するように配置された。耐火試験では、加熱炉の炉温は、実際の火災発生時の状況を再現すべく、約1時間の時間で室温(初期温度)から約950℃に上昇するように制御された。   When this inventor implemented the fireproof test of such a fireproof division wall, the fireproof structure 1 of the said structure exhibited the expected fireproof performance. In this fire resistance test, a fire prevention partition wall 1 formed by attaching a gypsum board having a thickness of 21 mm as a board 2 or 3 to a lightweight steel stud 10 on one side is used as a specimen, and one side of the fire protection partition wall 1 is a gas. It was arranged to face the furnace of the combustion type heating furnace. In the fire resistance test, the furnace temperature of the heating furnace was controlled to increase from room temperature (initial temperature) to about 950 ° C. in about 1 hour in order to reproduce the actual situation when the fire occurred.

スタッド10を炉内に向けた第1耐火試験と、石膏ボード2、3を炉内に向けた第2耐火試験とを個別に実施し、各試験において、炉と反対側に位置する壁面の温度を測定した結果、防火区画壁1の裏面温度(室内側表面温度)は、いずれの試験においても、最高温度約200℃(室温+180℃)及び平均温度約160℃(室温+140℃)を超えることはなく、防火区画壁としての性能を十分に発揮すると判明した。   The first fire resistance test with the stud 10 facing the furnace and the second fire resistance test with the gypsum boards 2 and 3 facing the furnace are performed separately. In each test, the temperature of the wall surface located on the opposite side of the furnace As a result of the measurement, the back surface temperature (indoor side surface temperature) of the fire protection partition wall 1 exceeds the maximum temperature of about 200 ° C. (room temperature + 180 ° C.) and the average temperature of about 160 ° C. (room temperature + 140 ° C.) in any test. However, it was proved that the performance as a fire protection wall was fully demonstrated.

このような構成の片面施工型間仕切壁が防火区画壁としての性能を発揮した原因を考察すると、当業者が過去に認識していなかった以下の要因又は現象が挙げられる。
(1) 結晶水の蒸発気化熱により温度上昇しない性質を備えた石膏ボードは、このような高温雰囲気においても面内方向の外力に耐える面内剛性を発揮し、
(2) 面外方向の外力に対しては、このような高温雰囲気においても軽量鉄骨製スタッドが面外剛性を発揮し、
(3) 炉内に面する軽量鉄骨製スタッドは、炉温上昇時に変形するが、石膏ボードのスクリュービスは、スタッドの過剰な変形を制限し、
(4) 壁体は、スタッド、スクリュービス及び石膏ボードの協働作用により、全体的な一体性を高温時に保持し、
(5) ボード自体及びボードの継目には、炎及び熱風が壁体を貫通するような孔又は亀裂等が生じない。
Considering the cause of the performance of the single-sided partition wall having such a configuration as a fire prevention partition wall, there are the following factors or phenomena that the person skilled in the art has not recognized in the past.
(1) Gypsum board with the property that the temperature does not rise due to the heat of vaporization of crystal water shows in-plane rigidity that can withstand external forces in the in-plane direction even in such a high temperature atmosphere.
(2) For external forces in the out-of-plane direction, lightweight steel studs exhibit out-of-plane rigidity even in such a high temperature atmosphere.
(3) The lightweight steel stud facing the furnace deforms when the furnace temperature rises, but the screw screws on the gypsum board limit excessive deformation of the stud,
(4) The wall body maintains its overall integrity at high temperatures by the cooperative action of studs, screw screws and gypsum board,
(5) There will be no holes or cracks in the board itself and the joints of the board that allow flames and hot air to penetrate the wall.

以上、本発明の好適な実施形態について詳細に説明したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の範囲内で種々の変形又は変更が可能であり、該変形例又は変更例も又、本発明の範囲内に含まれるものであることは、いうまでもない。
例えば、上記実施形態では、不燃性ボードとして石膏ボードを使用したが、不燃性ボードとして、珪酸カルシウム板を使用しても良い。
The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications or changes can be made within the scope of the present invention described in the claims. Needless to say, such modifications and variations are also included in the scope of the present invention.
For example, in the said embodiment, although the gypsum board was used as a nonflammable board, you may use a calcium-silicate board as a nonflammable board.

また、上記実施形態では、ボード2、3は、互いに直交する方向(縦横方向)に配置されているが、ボード2、3は、同一方向(縦方向)に配置しても良い。この場合、ボード2、3の縦目地位置は、好ましくは、壁芯方向に互いにずれた位置に配置される。所望により、ボード3の目地に金属板、ハット型金属ジョイナー等を介挿し、あるいは、石膏ボード、石膏板又は珪酸カルシウム板等の耐火材を充填しても良い。   Moreover, in the said embodiment, although the boards 2 and 3 are arrange | positioned in the mutually orthogonal direction (vertical and horizontal direction), you may arrange | position the boards 2 and 3 in the same direction (vertical direction). In this case, the vertical joint positions of the boards 2 and 3 are preferably arranged at positions shifted from each other in the wall core direction. If desired, the joint of the board 3 may be inserted with a metal plate, a hat-type metal joiner or the like, or may be filled with a refractory material such as a gypsum board, a gypsum plate or a calcium silicate plate.

更に、上記実施形態では、竪穴区画を構成する防火区画壁について説明したが、いわゆる面積区画のための防火区画壁、排煙又は避難の観点より設けられる性質の防火区画壁等関して、本発明の構成を適用しても良い。この場合、本発明の防火区画壁は、内装仕上を要しない倉庫等の室と、内装仕上を要する一般的な居室とを仕切る耐火構造の間仕切壁として効率的に使用することができる。これは、この種の隔壁であっても不燃性ボードを両面施工していた従来の防火区画壁と対比すると、大幅な工事費低減及び工期短縮等を可能にするので、実務的には極めて有利である。   Further, in the above-described embodiment, the fire prevention compartment wall constituting the pothole compartment has been described. However, the present invention relates to a fire prevention compartment wall for a so-called area compartment, a fire prevention compartment wall having properties provided from the viewpoint of smoke emission or evacuation, and the like. You may apply the structure of. In this case, the fireproof partition wall of the present invention can be efficiently used as a partition wall of a fireproof structure that partitions a room such as a warehouse that does not require interior finishing and a general living room that requires interior finishing. This is extremely advantageous in practice because it enables a significant reduction in construction costs and shortening the construction period when compared with the conventional fire-proofing wall where double-sided construction of non-combustible boards is possible even with this type of partition wall. It is.

また、本発明の防火区画壁を耐火構造の間仕切壁のみならず、準耐火構造の間仕切壁として採用しても良い。   Moreover, you may employ | adopt the fire prevention division wall of this invention not only as a partition wall of a fireproof structure but as a partition wall of a semi-fireproof structure.

以上説明した如く、本発明の上記構成によれば、エレベータシャフト、設備シャフト等の竪穴の如く、一方の側からは極端に施工困難な条件に設置される乾式工法の防火区画壁に関し、その施工性を大幅に改善することができる。   As described above, according to the above-described configuration of the present invention, it relates to a fire-proof partition wall of a dry construction method that is installed under extremely difficult conditions from one side, such as a shaft hole of an elevator shaft, an equipment shaft, etc. The sex can be greatly improved.

1 防火区画壁
2 下貼ボード
3 上貼ボード
10 鋼製スタッド
50 竪穴
DESCRIPTION OF SYMBOLS 1 Fire-protection partition wall 2 Underlay board 3 Upper paste board 10 Steel stud 50

Claims (5)

室と室、または室と設備空間とを仕切る屋内非耐力壁であって、鋼製スタッド及び不燃性ボード材料により形成される乾式工法の防火区画壁において、
壁芯に沿って整列配置した垂直な鋼製スタッドと、
鋼製スタッドの片面にのみ取付けられた不燃性ボード材料とからなり、
前記スタッド及びボード材料の各着火温度は、1000℃以上の温度であり、
防火区画壁の任意の側の雰囲気温度が950℃の高温に達したときに、防火区画壁の他方の側における前記ボード材料の表面温度は、最高200℃以下、平均160℃以下の範囲内の温度を維持し、
前記ボード材料は、不燃性且つ耐熱性を有する係止具によって前記スタッドに固定され、
該係止具は、耐火構造壁の片側領域の雰囲気温度が900℃以上の高温に達したときに、前記ボード材料及びスタッドの一体性を保持するとともに、前記スタッドの熱変形を抑制することを特徴とする防火区画壁。
An indoor non-bearing wall that divides a room and a room, or a room and an equipment space, in a fire-proof compartment wall of a dry construction method formed by a steel stud and a non-combustible board material,
Vertical steel studs aligned along the wall core,
Composed of non-combustible board material attached only to one side of the steel stud,
Each ignition temperature of the stud and board material is a temperature of 1000 ° C. or more,
When the ambient temperature on any side of the fire compartment wall reaches a high temperature of 950 ° C., the surface temperature of the board material on the other side of the fire compartment wall is within a range of up to 200 ° C. and an average of 160 ° C. or less. Maintain the temperature,
The board material is fixed to the stud by a nonflammable and heat-resistant locking tool,
When the atmospheric temperature of the one side region of the fire-resistant structure wall reaches a high temperature of 900 ° C. or higher, the locking device maintains the integrity of the board material and the stud and suppresses thermal deformation of the stud. Characterized fire barrier wall.
前記ボード材料は、少なくとも2層構造に積層されることを特徴とする請求項1に記載の防火区画壁。   The fire protection compartment wall according to claim 1, wherein the board material is laminated in at least a two-layer structure. 前記ボード材料は、加熱時におけるボード素材の結晶水の蒸発気化熱によりボード自体の温度上昇を抑制する性質を有する不燃性ボードからなることを特徴とする請求項1又は2に記載の防火区画壁。   3. The fireproof partition wall according to claim 1, wherein the board material is a noncombustible board having a property of suppressing a temperature rise of the board itself by heat of evaporation of crystal water of the board material during heating. . 前記ボード材料は、9.5mm以上の板厚を有する石膏ボードからなることを特徴とする請求項1に記載の防火区画壁。   The fire protection compartment wall according to claim 1, wherein the board material is made of gypsum board having a plate thickness of 9.5 mm or more. 前記係止具は、前記スタッドに沿って300mm以下の間隔に配置されることを特徴とする請求項1乃至4のいずれか1項に記載の防火区画壁。   The fire protection compartment wall according to any one of claims 1 to 4, wherein the locking members are arranged at intervals of 300 mm or less along the stud.
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