JP7636992B2 - Fire-resistant floor base structure and fire-resistant wooden floor unit - Google Patents
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本発明は、耐火床下地構造及び耐火木製床ユニットに関し、特に、木床部材と床仕上材との間に介在して設けられて、木製床の耐火性能を向上させる耐火床下地構造、及び該耐火床下地構造に用いる耐火木製床ユニットに関する。 The present invention relates to a fire-resistant floor base structure and a fire-resistant wooden floor unit, and in particular to a fire-resistant floor base structure that is interposed between a wooden floor component and a floor finishing material to improve the fire resistance of the wooden floor, and a fire-resistant wooden floor unit used in the fire-resistant floor base structure.
近年の建築物では、火災加熱を受けた場合でも、構造躯体を保持できるように、準耐火構造又は耐火構造を備えていることが望まれており、準耐火構造又は耐火構造を備えるようにするための設計可能な基準が、建築基準法等において種々定められている。 In recent years, it has become desirable for buildings to have semi-fireproof or fireproof construction so that the structural frame can be maintained even when exposed to heat from a fire, and various design standards for semi-fireproof or fireproof construction have been established in the Building Standards Act and other laws.
例えば木造の建築物では、構造躯体への影響が少ない好ましくは耐火構造を備える木製の床として、ＣＬＴ（直交集成板）やＬＶＬ（単板積層材）による木床部材の上に、石膏ボードなどの面材やコンクリートなどの湿式材料による耐火被覆材を設置した木製床が知られているが、これらの耐火被覆材は留め付けや養生が必要で、設置作業に手間がかかると共に、解体時の作業負担も大きい上に、これらの耐火被覆材は無処理では再利用が困難である。 For example, in wooden buildings, wooden floors that have a fire-resistant structure and have minimal impact on the structural frame, such as cross-laminated timber (CLT) or laminated veneer lumber (LVL), are known to have fire-resistant covering materials such as gypsum board or wet materials such as concrete installed on top of wooden floor components. However, these fire-resistant covering materials require fastening and curing, which makes installation time-consuming and increases the workload during demolition, and these fire-resistant covering materials are difficult to reuse without treatment.
一方、耐火性・不燃性に優れていて、かつ、新築時だけでなくリニューアル時にも適用可能な、上階の床衝撃音の低減効果が高い天井構造として、上部構造体の下方に隙間をあけて形成された天井と、天井に上載された吸音体とを備えてなり、吸音体が、粒状体と、粒状体を収容する袋容器とを有しており、粒状体は、パーライト、砂等からなっているものが開示されている（例えば、特許文献１参照）。 On the other hand, a ceiling structure that is highly fire-resistant and non-combustible, can be used not only in new construction but also in renovations, and is highly effective at reducing floor impact noise on upper floors, has been disclosed that includes a ceiling formed with a gap below the upper structure and a sound-absorbing body placed on the ceiling, the sound-absorbing body having granular material and a bag container for storing the granular material, the granular material being made of perlite, sand, etc. (see, for example, Patent Document 1).
パーライト、砂等の粒状体は、耐火性や不燃性に優れる素材であり、これをＣＬＴやＬＶＬ等による木床部材の上に敷設することによって、耐火性能に優れた木製床を簡易に形成できると考えられるが、上述の特許文献１では、パーライト、砂等の粒状体は、主に床衝撃音の低減効果が高い天井構造を形成するための材料となっており、これを準耐火構造、好ましくは耐火構造を備える木製床を形成するための材料として用いるには、木製床の特性や施工性等を鑑みて、特有の技術的手段を新たに採用することが必要になる。 Granular materials such as perlite and sand are materials with excellent fire resistance and non-combustibility, and it is thought that by laying them on top of wooden flooring materials such as CLT or LVL, a wooden floor with excellent fire resistance can be easily formed. However, in the above-mentioned Patent Document 1, granular materials such as perlite and sand are mainly used as materials for forming a ceiling structure that is highly effective in reducing floor impact noise, and to use them as materials for forming a wooden floor with a semi-fireproof structure, preferably a fireproof structure, it is necessary to adopt new specific technical means that take into account the characteristics and workability of the wooden floor.
本発明は、準耐火構造又は耐火構造を備える木製床を、粒状体を用いて簡易に且つ容易に形成することを可能にする耐火床下地構造、及び該耐火床下地構造に用いる耐火木製床ユニットを提供することを目的とする。 The present invention aims to provide a fireproof floor base structure that allows a wooden floor having a semi-fireproof or fireproof structure to be simply and easily formed using granular materials, and a fireproof wooden floor unit for use in the fireproof floor base structure.
本発明は、木製床を形成する木床部材と床仕上材との間に介在して設けられて、木製床の耐火性能を向上させる耐火下地構造であって、前記木床部材の上面に敷設された粒状体敷設層と、該粒状体敷設層の上方を覆って設置された床下地用面材とを含んで構成される木製床の耐火床下地構造を提供することにより、上記目的を達成したものである。 The present invention achieves the above-mentioned objective by providing a fireproof underlay structure for a wooden floor that is interposed between the wooden floor members that form the wooden floor and the floor finishing material to improve the fireproof performance of the wooden floor, the fireproof underlay structure for a wooden floor being composed of a granular material layer laid on the upper surface of the wooden floor members and a floor underlay surface material that is installed to cover the upper part of the granular material layer.
そして、本発明の木製床の耐火床下地構造は、前記粒状体敷設層が、粒径が２５ｍｍ以下、密度が１２ｇ/ｃｍ3以下の粒状体からなる、１０～２００ｍｍの厚さの敷設層となっていることが好ましい。 Furthermore, in the fireproof floor base structure for wooden floors of the present invention, it is preferable that the granular material laying layer is a layer having a thickness of 10 to 200 mm and consisting of granular material having a particle size of 25 mm or less and a density of 12 g/cm3 or less .
また、本発明の木製床の耐火床下地構造は、前記粒状体が、スラグであることが好ましい。 In addition, in the fireproof floor base structure for wooden floors of the present invention, the granular material is preferably slag.
さらに、本発明の木製床の耐火床下地構造は、前記木床部材の上面を縦横に仕切って枠部材が取り付けられており、前記粒状体は、前記枠部材によって仕切られた各々の区画に充填されて敷設されていることが好ましい。 Furthermore, it is preferable that the fireproof floor base structure for a wooden floor of the present invention has frame members attached to partition the upper surface of the wooden floor member vertically and horizontally, and the granular material is filled and laid in each compartment partitioned by the frame members.
さらにまた、本発明の木製床の耐火床下地構造は、前記枠部材によって仕切られた各々の区画が、矩形状の区画となっていることが好ましい。 Furthermore, it is preferable that the fireproof floor base structure for a wooden floor of the present invention has each compartment separated by the frame member be a rectangular compartment.
また、本発明の木製床の耐火床下地構造は、前記枠部材が、石膏ボード、金属、木材又は樹脂を用いて形成されていることが好ましい。 In addition, in the fireproof floor base structure for a wooden floor of the present invention, it is preferable that the frame member is formed using gypsum board, metal, wood, or resin.
さらに、本発明の木製床の耐火床下地構造は、前記枠部材が、前記床下地用面材の根太を兼ねていることが好ましい。 Furthermore, in the fireproof floor underlayment structure for wooden floors of the present invention, it is preferable that the frame members also serve as joists for the surface material for the floor underlayment.
さらにまた、本発明の木製床の耐火床下地構造は、前記床下地用面材が、石膏ボード、木材又は緩衝材のいずれか１以上からなっていることが好ましい。 Furthermore, in the fireproof floor underlayment structure for wooden floors of the present invention, it is preferable that the underlayment surface material is made of one or more of gypsum board, wood, or cushioning material.
また、本発明の木製床の耐火床下地構造は、前記木床部材の上面に、下側石膏ボード又は下側緩衝材のいずれか１以上が敷設されており、該下側石膏ボード又は下側緩衝材の上面に前記粒状体敷設層が形成されていることが好ましい。 In addition, the fireproof floor base structure for a wooden floor of the present invention preferably has at least one of a lower gypsum board or a lower cushioning material laid on the upper surface of the wooden floor component, and the granular material layer is formed on the upper surface of the lower gypsum board or the lower cushioning material.
さらに、本発明の木製床の耐火床下地構造は、前記木床部材が、単板積層材又は直交集成板を用いて形成されていることが好ましい。 Furthermore, in the fireproof floor underlayment structure for a wooden floor of the present invention, it is preferable that the wooden floor members are formed using laminated veneer lumber or cross-laminated timber.
さらにまた、本発明の木製床の耐火床下地構造は、前記木床部材が、構造用合板を用いて形成されていることが好ましい。 Furthermore, in the fireproof floor underlayment structure for wooden floors of the present invention, it is preferable that the wooden floor members are formed using structural plywood.
また、本発明は、上記の木製床の耐火床下地構造を形成するための耐火木製床ユニットであって、矩形状の平面形状を備える木床基盤部材と、該木床基盤部材の上面を縦横に仕切って取り付けられた前記枠部材と、前記枠部材によって仕切られた各々の区画に充填されるようにして敷設された前記粒状体とを含んで構成される耐火木製床ユニットを提供することにより、上記目的を達成したものである。 The present invention also achieves the above-mentioned object by providing a fire-resistant wooden floor unit for forming a fire-resistant floor base structure for the above-mentioned wooden floor, which comprises a wooden floor base member having a rectangular planar shape, the frame member attached to the upper surface of the wooden floor base member by dividing it vertically and horizontally, and the granular material laid so as to fill each of the compartments divided by the frame member.
そして、本発明の耐火木製床ユニットは、前記木床基盤部材が、縦横３０～１２００ｃｍの大きさの矩形状の平面形状を備えていることが好ましい。 The fire-resistant wooden floor unit of the present invention preferably has a planar rectangular shape with dimensions of 30 to 1200 cm in length and width.
また、本発明の耐火木製床ユニットは、前記木床基盤材の上面に、下側石膏ボード又は下側緩衝材のいずれか１以上が敷設されており、該下側石膏ボード又は下側緩衝材の上面に前記枠部材が取り付けられ、各々の区画に前記粒状体が敷設されていることが好ましい。 Furthermore, it is preferable that the fire-resistant wooden floor unit of the present invention has at least one of a lower gypsum board or a lower cushioning material laid on the upper surface of the wooden floor base material, the frame member is attached to the upper surface of the lower gypsum board or the lower cushioning material, and the granular material is laid in each compartment.
本発明の耐火床下地構造及び耐火木製床ユニットによれば、準耐火構造又は耐火構造を備える木製床を、粒状体を用いて簡易に且つ容易に形成することができる。 The fireproof floor base structure and fireproof wooden floor unit of the present invention allow a wooden floor with a semi-fireproof structure or a fireproof structure to be simply and easily formed using granular materials.
本発明の好ましい一実施形態に係る木製床の耐火床下地構造１０（図４参照）は、例えば図１に示すように、隣接する各一対の柱フレーム５０間を連結するようにして縦横に架設された梁フレーム５１に支持させて、後述する構成を備える複数の耐火木製床ユニット２０を、隙間なく縦横に並べて設置することによって、準耐火構造、好ましくは耐火構造を備える木製床１１の下地構造を形成するものである。本実施形態の耐火床下地構造１０は、耐火性及び不燃性に優れた材料であるパーライト、砂等の粒状体として、好ましくはスラグを用いることによって、準耐火構造、好ましくは耐火構造を備える木製の床構造を、簡易に且つ容易に形成できるようにするものである。 In a preferred embodiment of the present invention, a fireproof floor base structure 10 (see FIG. 4) for a wooden floor is formed by supporting a plurality of fireproof wooden floor units 20 having the configuration described below vertically and horizontally and arranged without gaps on beam frames 51 that are vertically and horizontally installed so as to connect each pair of adjacent column frames 50, as shown in FIG. 1, to form a base structure for a wooden floor 11 having a quasi-fireproof structure, preferably a fireproof structure. The fireproof floor base structure 10 of this embodiment uses slag, preferably as granular material such as perlite and sand, which are materials with excellent fire resistance and non-combustibility, to simply and easily form a wooden floor structure having a quasi-fireproof structure, preferably a fireproof structure.
そして、本実施形態の耐火床下地構造１０は、図４に示すように、木製床１１を形成する木床部材１２と床仕上材１３との間に介在して設けられて、木製床１１の耐火性能を向上させる下地構造であって、木床部材１２の上面に敷設された粒状体１４ａによる粒状体敷設層１４と、この粒状体敷設層１４の上方を覆って設置された床下地用面材１５とを含んで構成されている。 The fireproof floor base structure 10 of this embodiment is, as shown in FIG. 4, a base structure that is interposed between the wooden floor member 12 that forms the wooden floor 11 and the floor finishing material 13, and improves the fireproof performance of the wooden floor 11, and is composed of a granular material laying layer 14 made of granular material 14a laid on the upper surface of the wooden floor member 12, and a floor base surface material 15 that is installed to cover the upper part of this granular material laying layer 14.
また、本実施形態では、木床部材１２の上面を縦横に仕切って枠部材１６が取り付けられており、粒状体１４ａは、枠部材１６によって仕切られた各々の区画１７に充填されるようにして敷設されて、粒状体敷設層１４を形成している。 In this embodiment, a frame member 16 is attached to the top surface of the wooden floor member 12, dividing it vertically and horizontally, and the granular material 14a is laid so that it fills each of the compartments 17 divided by the frame member 16, forming the granular material layer 14.
さらに、本実施形態では木製床の耐火床下地構造１０は、好ましくは図１～図３に示すように、矩形状の平面形状を備える木床基盤部材２２と、木床基盤部材２２の上面を縦横に仕切って取り付けられた枠部材２６と、枠部材２６によって好ましくは矩形状に仕切られた各々の区画２７に充填されるようにして敷設された、粒状体２４ａとを含んで構成される耐火木製床ユニット２０を、梁フレーム５１に支持させて、隙間なく縦横に並べて設置することによって形成されている。 Furthermore, in this embodiment, the fireproof floor base structure 10 for a wooden floor is preferably formed by supporting the fireproof wooden floor units 20 on a beam frame 51 and arranging them vertically and horizontally without gaps, as shown in Figures 1 to 3, and comprising a wooden floor base member 22 having a rectangular planar shape, a frame member 26 attached to the upper surface of the wooden floor base member 22 by dividing it vertically and horizontally, and granular material 24a laid so as to fill each of the compartments 27 preferably divided by the frame member 26.
本実施形態では、耐火床下地構造１０を形成する耐火木製床ユニット２０は、上述のように、木床基盤部材２２と、枠部材２６と、枠部材２６によって好ましくは矩形状に仕切られた各々の区画２７に充填されるようにして敷設された、粒状体２４ａによる粒状体敷設層２４とを含んで構成されている（図２、図３参照）。 In this embodiment, the fireproof wooden floor unit 20 forming the fireproof floor base structure 10 is composed of a wooden floor base member 22, a frame member 26, and a granular material layer 24 of granular material 24a laid so as to fill each of the compartments 27, preferably rectangularly partitioned by the frame member 26, as described above (see Figures 2 and 3).
木床基盤部材２２は、好ましくはＣＬＴ（直交集成板）やＬＶＬ（単板積層材）からなり、例えば梁フレーム５１に周縁部分を支持させて設置することが可能な大きさとして、好ましくは縦横３０～１２００ｃｍ程度の大きさの矩形状の平面形状を備えている。また木床基盤部材２２は、２～５０ｃｍ程度の厚さを備える木製の部材となっている。木床基盤部材２２の上面には、好ましくは下側石膏ボードや下側緩衝材、或いはこれらを重ね合わせた単位下側被覆材２８を取り付けた後に、枠部材２６として、好ましくは石膏ボード、金属、木材、又は樹脂による矩形状部材、帯板部材、帯板部材を積層させて一体として接合した積層部材、またはこれらを複合させた複合部材を、当該上面の周縁部分及びこれの内側を縦横に仕切って取り付けることによって、粒状体２４ａを充填して敷設するための、矩形状の区画２７が形成されることになる（図２参照）。各々の区画２７には、粒状体２４ａが充填されるようにして敷設されて、枠部材２６の高さに相当する、好ましくは１０～２００ｍｍ程度の厚さの粒状体敷設層２４が、枠部材２６の部分で分断された状態で形成されることになる。 The wooden floor base member 22 is preferably made of CLT (cross-laminated timber) or LVL (laminated veneer lumber), and has a rectangular planar shape, preferably about 30 to 1200 cm in length and width, so that it can be installed with the peripheral portion supported by the beam frame 51. The wooden floor base member 22 is also a wooden member with a thickness of about 2 to 50 cm. After attaching a lower gypsum board, a lower cushioning material, or a unit lower covering material 28 made by stacking these on top of each other to the upper surface of the wooden floor base member 22, a rectangular member, preferably made of gypsum board, metal, wood, or resin, a strip member, a laminated member made by stacking and joining strip members together, or a composite member made by combining these, is attached to the peripheral portion of the upper surface and its inside vertically and horizontally to form a rectangular compartment 27 for filling and laying the granular material 24a (see Figure 2). Granular material 24a is laid in each section 27 so that it is filled in, forming a granular material layer 24 with a thickness equivalent to the height of the frame member 26, preferably about 10 to 200 mm, which is divided by the frame member 26.
ここで、木床部材１２となる木床基盤部材２２の上面に敷設されて、粒状体敷設層１４，２４を形成する粒状体１４ａ，２４ａとして、好ましくは粒径が２５ｍｍ以下、密度が１２ｇ/ｃｍ3以下の、例えばパーライト、砂等からなる公知の種々の粒状体を用いることができる。特に、粒状体１４ａ，２４ａとして、鉄鋼スラグ等のスラグを用いることが好ましい。粒状体１４ａ，２４ａとして、鉄鋼スラグ等のスラグを用いることにより、熱容量を増やして遮熱性能を高めることが可能になると共に、重量を増やして遮音性能を高めることが可能になる。また、粒状体１４ａ，２４ａによる粒状体敷設層１４，２４は、上述のように、１０～２００ｍｍ程度の厚さで形成することが好ましい。 Here, the granular materials 14a, 24a that are laid on the upper surface of the wooden floor base member 22 that becomes the wooden floor member 12 to form the granular material laying layer 14, 24 can be various known granular materials, such as perlite, sand, etc., preferably having a particle size of 25 mm or less and a density of 12 g/cm 3 or less. In particular, it is preferable to use slag such as steel slag as the granular materials 14a, 24a. By using slag such as steel slag as the granular materials 14a, 24a, it is possible to increase the heat capacity and improve the heat insulation performance, and to increase the weight and improve the sound insulation performance. In addition, it is preferable that the granular material laying layer 14, 24 made of the granular materials 14a, 24a is formed to a thickness of about 10 to 200 mm, as described above.
本実施形態では、耐火木製床ユニット２０の上面部には、枠部材２６に支持させると共に、各々の区画２７に充填された粒状体２４ａによる粒状体敷設層２４を覆うようにして、好ましくは石膏ボードからなる単位床下地用面材２５（図３参照）を取り付けておくことができる。単位床下地用面材２５は、木床基盤部材２２や単位下側被覆材２８と同様に、好ましくは縦横３０～１２００ｃｍ程度の大きさの、矩形状の平面形状を備えるように形成されると共に、根太を兼ねる枠部材２６によって、木床基盤部材２２との間に、粒状体２４ａを充填して粒状体敷設層２４を形成するための空間を、保持した状態で取り付けておくことができる。 In this embodiment, a unit floor underlayment surface material 25 (see FIG. 3), preferably made of gypsum board, can be attached to the upper surface of the fireproof wooden floor unit 20, supported by the frame member 26 and covering the granular material laying layer 24 of granular material 24a filled in each compartment 27. The unit floor underlayment surface material 25 is formed to have a rectangular planar shape, preferably about 30 to 1200 cm in length and width, like the wooden floor base member 22 and the unit lower covering member 28, and can be attached by the frame member 26, which also serves as a joist, while maintaining a space between the wooden floor base member 22 and the granular material 24a to form the granular material laying layer 24.
本実施形態では、好ましくは上述の構成を備える、床下地用面材２５が上面部に取り付けられた各々の耐火木製床ユニット２０を吊り上げて、図１に示すように、例えば隣接する各一対の柱フレーム５０間を連結して縦横に架設された梁フレーム５１に支持させるようにして、吊り上げた耐火木製床ユニット２０を、好ましくは隙間なく縦横に並べて設置することにより、図４に示すような、連続する耐火木製床ユニット２０の木床基盤部材２２による木床部材１２と、木床部材１２の上面において、枠部材１６，２６によって縦横に仕切られた各々の区画１７に充填されるようにして敷設された、粒状体１４ａ，２４ａによる粒状体敷設層１４，２４と、これらの粒状体敷設層１４，２４の上方を覆って設置された、連続する単位床下地用面材２５による床下地用面材１５と、連続する単位下側被覆材２８による下側被覆材１８とを含んで構成される、本実施形態の木製床の耐火床下地構造１０が、容易に形成されることになる。また形成された耐火床下地構造１０の、連続する単位床下地用面材２５による床下地用面材１５の上面には、例えばカーペットやフローリング等の公知の種々の床仕上材１３が設置されることにより、本実施形態の耐火床下地構造１０によって耐火性能が向上した、木製床１１が形成されることになる。 In this embodiment, each fireproof wooden floor unit 20, which has the above-mentioned configuration and has a floor underlay surface material 25 attached to its upper surface, is lifted and, as shown in FIG. 1, for example, each pair of adjacent column frames 50 is connected and supported by a beam frame 51 that is installed vertically and horizontally. The lifted fireproof wooden floor units 20 are preferably arranged vertically and horizontally without any gaps, and then, as shown in FIG. 4, a wooden floor member 12 made of wooden floor base members 22 of consecutive fireproof wooden floor units 20 is installed. The fireproof floor base structure 10 of the wooden floor of this embodiment is easily formed, which includes the granular material laying layers 14, 24 made of granular material 14a, 24a laid so as to fill each of the compartments 17 divided vertically and horizontally by the frame members 16, 26 on the upper surface of the wooden floor member 12, the floor base surface material 15 made of continuous unit floor base surface material 25 installed to cover the upper part of these granular material laying layers 14, 24, and the lower covering material 18 made of continuous unit lower covering material 28. In addition, various known floor finishing materials 13 such as carpet and flooring are installed on the upper surface of the floor base surface material 15 made of the continuous unit floor base surface material 25 of the formed fireproof floor base structure 10, thereby forming a wooden floor 11 with improved fire resistance due to the fireproof floor base structure 10 of this embodiment.
そして、上述の構成を備える本実施形態の木製床の耐火床下地構造１０及び耐火木製床ユニット２０によれば、準耐火構造又は耐火構造を備える木製床１１を、粒状体１４ａ，２４ａを用いて簡易に且つ容易に形成することが可能になる。 The fireproof floor base structure 10 and fireproof wooden floor unit 20 of the present embodiment, which have the above-mentioned configuration, make it possible to simply and easily form a wooden floor 11 having a semi-fireproof structure or a fireproof structure using the granular materials 14a, 24a.
すなわち、本実施形態によれば、好ましくは耐火木製床ユニット２０を用いて形成された木製床の耐火床下地構造１０は、木床部材１２の上面に敷設された粒状体敷設層１４と、この粒状体敷設層１４の上方を覆って設置された床下地用面材１５とを含んで構成されているので、耐火性及び不燃性に優れた材料として、粒状体を用いたことによって、石膏ボードなどの面材やコンクリートなどの湿式材料による耐火被覆材を設置するものと比較して、手間のかかる留め付けや養生等による設置作業を少なくすることで、簡易に且つ容易に準耐火構造又は耐火構造を備える木製床１１を形成することが可能になると共に、解体時の作業負担も軽減することが可能になる。また、粒状体は、無処理で再利用することが可能である。 That is, according to this embodiment, the fireproof floor base structure 10 of the wooden floor, preferably formed using the fireproof wooden floor unit 20, is composed of a granular material laying layer 14 laid on the upper surface of the wooden floor member 12 and a floor base surface material 15 installed to cover the upper part of this granular material laying layer 14. Therefore, by using granular materials as a material with excellent fire resistance and non-combustibility, it is possible to reduce the installation work such as time-consuming fastening and curing compared to installing a fireproof covering material made of a surface material such as gypsum board or a wet material such as concrete, and it is possible to simply and easily form a wooden floor 11 with a semi-fireproof structure or a fireproof structure, and also to reduce the workload during dismantling. In addition, the granular materials can be reused without treatment.
さらに、本実施形態によれば、好ましくは耐火木製床ユニット２０を用いて形成された木製床の耐火床下地構造１０は、木床基盤部材２２が連設して形成された木床部材１２の上面に敷設された、各々の区画１７，２７に充填された粒状体１４ａ，２４ａによる粒状体敷設層１４，２４と、粒状体敷設層１４，２４の上方を覆って設置された床下地用面材１５（２５）とを含んで構成されており、木製床１１を形成する木床部材１２と床仕上材１３との間に介在して設けられることで、木製床１１の耐火性能を簡易な構成によって効果的に向上させることが可能になる。 Furthermore, according to this embodiment, the fireproof floor base structure 10 of the wooden floor, preferably formed using the fireproof wooden floor unit 20, is composed of granular material laying layers 14, 24 made of granular material 14a, 24a filled in each compartment 17, 27 laid on the top surface of the wooden floor member 12 formed by connecting the wooden floor base members 22, and a floor base surface material 15 (25) installed covering the top of the granular material laying layers 14, 24, and is interposed between the wooden floor member 12 that forms the wooden floor 11 and the floor finishing material 13, making it possible to effectively improve the fire resistance of the wooden floor 11 with a simple configuration.
図５は、本発明の好ましい他の実施形態に係る木製床の耐火床下地構造１０’を説明するものである。図５に示す他の実施形態の木製床の耐火床下地構造１０’では、木製床１１’を形成する木床部材１２’は、梁フレーム５１の上端面に載置されて支持される平置きタイプの床部材ではなく、梁フレーム５１の上部側面に両端面を接合することによって支持させた、落とし込みタイプ木床部材となっている。また、木床部材１２’の上面及び梁フレーム５１の上端面に形成される、粒状体１４ａによる粒状体敷設層１４’は、枠部材によって仕切られることなく、粒状体１４ａを連続させた状態で敷設して形成されている。粒状体１４ａによる粒状体敷設層１４’は、枠部材により仕切った状態で、木床部材１２’の上面及び梁フレーム５１の上端面に敷設することもできる。さらに、粒状体敷設層１４’は、下側被覆材を介在させることなく、木床部材１２’の上面及び梁フレーム５１の上端面に直接に敷設されると共に、粒状体敷設層１４’の上方を覆って床下地用面材１５’が設置されており、さらに床仕上材１３が取り付けられることによって、耐火性能が向上した木製床１１’を形成している。 Figure 5 illustrates a fireproof floor structure 10' for a wooden floor according to another preferred embodiment of the present invention. In the fireproof floor structure 10' for a wooden floor according to another embodiment shown in Figure 5, the wooden floor member 12' forming the wooden floor 11' is not a flat-type floor member that is placed on the upper end surface of the beam frame 51 and supported, but a drop-in type wooden floor member that is supported by joining both ends to the upper side surface of the beam frame 51. In addition, the granular material laying layer 14' made of granular material 14a formed on the upper surface of the wooden floor member 12' and the upper end surface of the beam frame 51 is formed by laying the granular material 14a in a continuous state without being partitioned by a frame member. The granular material laying layer 14' made of granular material 14a can also be laid on the upper surface of the wooden floor member 12' and the upper end surface of the beam frame 51 in a state of being partitioned by a frame member. Furthermore, the granular material layer 14' is laid directly on the upper surface of the wooden floor member 12' and the upper end surface of the beam frame 51 without the need for an underlying covering material, and a floor underlayment surface material 15' is installed covering the upper part of the granular material layer 14'. Furthermore, by attaching the floor finishing material 13, a wooden floor 11' with improved fire resistance is formed.
本他の実施形態の耐火床下地構造１０’によっても、耐火性及び不燃性に優れた材料として、粒状体を用いたことで、上記の実施形態の木製床の耐火床下地構造１０と、同様の作用効果が奏される。 The fireproof floor base structure 10' of this other embodiment also achieves the same effects as the fireproof floor base structure 10 for wooden floors of the above embodiment by using granular material as a material with excellent fire resistance and non-combustibility.
なお、本発明は上記の各実施形態に限定されることなく種々の変更が可能である。例えば、床下地用面材や単位床下地用面材は、石膏ボードの他、木材や緩衝材であっても良く、これらの２以上を重ね合わせたものであっても良い。緩衝材としては、遮音用のフェルトシート、ゴム部材、発泡体等を用いることができる。床下地用面材や単位床下地用面材として緩衝材を用いることにより、木製床の遮音性能を向上させることが可能になる。木床部材は、ＣＬＴ（直交集成板）やＬＶＬ（単板積層材）の他、公知の種々の木製部材を用いて形成することができる。図６（ａ）に示すように、木床部材は、構造用合板３０を用いて形成されていても良い。図６（ｂ）に示すように、床下地用面材１５の上方に設けられる床仕上材１３’は、二重床３１の上面に配置して、床下地用面材１５の上方に配線や遮音のための空間３２を設けることもできる。 The present invention is not limited to the above-mentioned embodiments, and various modifications are possible. For example, the underfloor surface material and the unit underfloor surface material may be gypsum board, wood, a buffer material, or a combination of two or more of these. Sound-insulating felt sheets, rubber members, foams, etc. can be used as the buffer material. By using a buffer material as the underfloor surface material and the unit underfloor surface material, it is possible to improve the sound insulation performance of the wooden floor. The wooden floor member can be formed using various known wooden members such as CLT (cross-laminated timber) and LVL (laminated veneer lumber). As shown in FIG. 6(a), the wooden floor member may be formed using structural plywood 30. As shown in FIG. 6(b), the floor finishing material 13' provided above the underfloor surface material 15 can be placed on the upper surface of the double floor 31, and a space 32 for wiring and sound insulation can be provided above the underfloor surface material 15.
１０，１０’ 木製床の耐火床下地構造
１１，１１’ 木製床
１２，１２’ 木床部材
１３，１３’ 床仕上材
１４，１４’ 粒状体敷設層
１４ａ 粒状体
１５ 床下地用面材
１６ 枠部材
１７ 区画
１８ 下側被覆材
２０ 耐火木製床ユニット
２２ 木床基盤部材
２４ 粒状体敷設層
２４ａ 粒状体
２５ 単位床下地用面材
２６ 枠部材
２７ 区画
２８ 単位下側被覆材
３０ 構造用合板
３１ 二重床
３２ 空間
５０ 柱フレーム
５１ 梁フレーム
10, 10' Fireproof floor underlay structure for wooden floor 11, 11' Wooden floor 12, 12' Wooden floor member 13, 13' Floor finishing material 14, 14' Granular material laying layer 14a Granular material 15 Floor underlay surface material 16 Frame member 17 Compartment 18 Underside covering material 20 Fireproof wooden floor unit 22 Wooden floor base member 24 Granular material laying layer 24a Granular material 25 Unit floor underlay surface material 26 Frame member 27 Compartment 28 Unit underside covering material 30 Structural plywood 31 Double floor 32 Space 50 Column frame 51 Beam frame
Claims (13)
前記木床部材の上面に敷設された粒状体敷設層と、該粒状体敷設層の上方を覆って設置された床下地用面材とを含んで構成されており、
前記木床部材の上面に、下側石膏ボード又は下側緩衝材のいずれか１以上が敷設されており、該下側石膏ボード又は下側緩衝材の上面に前記粒状体敷設層が形成されている木製床の耐火床下地構造。 A fireproof base structure that is interposed between a wooden floor member that forms a wooden floor and a floor finishing material to improve the fireproof performance of the wooden floor,
The wooden floor member is configured to include a granular material layer laid on the upper surface of the wooden floor member, and a floor underlayment surface material installed to cover the upper part of the granular material layer,
A fire-resistant floor base structure for a wooden floor, in which one or more of a lower gypsum board or a lower cushioning material is laid on the upper surface of the wooden floor component, and the granular material laying layer is formed on the upper surface of the lower gypsum board or the lower cushioning material .
矩形状の平面形状を備える木床基盤部材と、該木床基盤部材の上面を縦横に仕切って取り付けられた前記枠部材と、前記枠部材によって仕切られた各々の区画に充填されるようにして敷設された前記粒状体とを含んで構成されており、
前記木床基盤部材の上面に、下側石膏ボード又は下側緩衝材のいずれか１以上が敷設されており、該下側石膏ボード又は下側緩衝材の上面に前記枠部材が取り付けられ、各々の区画に前記粒状体が敷設されている耐火木製床ユニット。 A fire-resistant wooden floor unit for forming a fire-resistant floor base structure for a wooden floor according to any one of claims 4 to 7 ,
The wooden floor base member has a rectangular planar shape, the frame member is attached to the top surface of the wooden floor base member by dividing it vertically and horizontally, and the granular material is laid so as to fill each of the compartments divided by the frame member .
A fire-resistant wooden floor unit in which one or more of a lower gypsum board or a lower cushioning material is laid on the upper surface of the wooden floor base member, the frame member is attached to the upper surface of the lower gypsum board or the lower cushioning material, and the granular material is laid in each compartment .
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