JP5791416B2 - Building floor structure - Google Patents

Building floor structure Download PDF

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JP5791416B2
JP5791416B2 JP2011166227A JP2011166227A JP5791416B2 JP 5791416 B2 JP5791416 B2 JP 5791416B2 JP 2011166227 A JP2011166227 A JP 2011166227A JP 2011166227 A JP2011166227 A JP 2011166227A JP 5791416 B2 JP5791416 B2 JP 5791416B2
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floor
girder
building
opening
dropped
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JP2013028972A (en
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健浩 竹中
健浩 竹中
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Description

本発明は、建物の床構造に関し、特に、建物ユニットにおいてバスユニットを設置するのに好適な床構造に関する。   The present invention relates to a floor structure of a building, and more particularly to a floor structure suitable for installing a bus unit in a building unit.

従来、骨格部材を備えた建物ユニットに浴室を設置する場合、骨格部材を構成する床小梁の上に、バスユニットを設置するのが一般的である。   Conventionally, when installing a bathroom in a building unit having a skeleton member, it is common to install a bus unit on a floor beam that constitutes the skeleton member.

また、バスユニットの床面と、浴室に隣接された部屋の床面との間に段差が生じないようにするため、建物ユニットに対するバスユニット及び浴槽の設置高さを床面よりも低くしたものも知られている(例えば、特許文献1、特許文献2参照)。
このうち特許文献2には、建物ユニットにおいて、骨格部材の床小梁を取り除いて床に開口部を形成し、この開口部に落とし込み床を形成し、この落とし込み床にバスユニットを設置した技術が開示されている。
In addition, the installation height of the bath unit and the bathtub with respect to the building unit is lower than the floor in order to prevent a step between the floor of the bath unit and the floor of the room adjacent to the bathroom. Are also known (see, for example, Patent Document 1 and Patent Document 2).
Among these, Patent Document 2 discloses a technique in which a floor beam of a skeleton member is removed from a building unit to form an opening in the floor, a dropping floor is formed in the opening, and a bus unit is installed on the dropping floor. It is disclosed.

特開2002−4429号公報JP 2002-4429 A 特開2010−159602号公報JP 2010-159602 A

上述の特許文献2に記載の技術では、建物ユニットの設置後のリフォームなどにおいて床小梁を切除して、建物ユニットの全幅に亘って床開口部を形成し、この床開口部にバスユニットを設置した構造となっていた。
このため、バスユニットは、建物ユニットの全幅に亘る大きさのものに制約されているとともに、浴室外の居室空間もバスユニットにより制約を受け、設計自由度が制限されていた。
In the technique described in Patent Document 2 described above, floor beams are cut out during renovation after installation of a building unit, a floor opening is formed over the entire width of the building unit, and a bus unit is installed in the floor opening. It was an installed structure.
For this reason, the bus unit is restricted to a size that covers the entire width of the building unit, and the living room space outside the bathroom is also restricted by the bus unit, and the degree of freedom in design is limited.

本発明は、上述の問題を解決することを目的とするものであり、建物の床に床開口部を設ける床構造において、設計自由度の向上を図ることが可能な建物の床構造を提供することを目的としている。   An object of the present invention is to solve the above-described problems, and provides a floor structure of a building capable of improving the degree of design freedom in a floor structure in which a floor opening is provided on a floor of a building. The purpose is that.

上記目的を達成するために、本発明は、建物の骨格を形成する骨格部材に設けられ、床の四周に設置された一対の床妻大梁及び一対の床桁大梁と、前記床において、前記一対の床妻大梁の一方から前記床桁大梁に沿う方向の前記床の一部であって、前記床妻大梁に沿う方向の全幅に亘って開口された床開口部と、前記床開口部に面して、前記一対の床桁大梁に取り付けられた桁大梁補強部材及び前記床妻大梁に取り付けられた妻大梁補強部材と、前記桁大梁補強部材及び前記妻大梁補強部材により支持されて前記床よりも低い位置に配置された小梁部材と、前記床開口部の外部の既設の床側の端縁部において前記既設の床と前記小梁部材との間の高さで前記床桁大梁の間に架け渡された第1下床小梁と、前記床開口部において、前記既設の床と前記小梁部材との間で第1下床小梁と略等しい高さに配置され、かつ、前記床開口部を前記床桁大梁に沿う方向に横切って前記妻大梁補強部材と前記第1下床小梁との間に架け渡された第2下床小梁と、前記床開口部の一部を覆って前記第2下床小梁に支持され、前記床桁大梁に沿う方向に前記既設の床に連続する付加床を形成する付加床材と、を備え、前記妻大梁補強部材は、前記第2下床小梁を支持する小梁支持ブラケットと、小梁受金具を介して前記第2下床小梁よりも低位置に前記小梁部材を支持する受金具支持ブラケットとを備えることを特徴とする建物の床構造とした。
また、請求項2に記載の発明は、請求項1に記載の建物の床構造において、前記第2下床小梁と前記小梁部材は直交配置されていることを特徴とする建物の床構造とした。
In order to achieve the above object, the present invention provides a pair of floor girder beams and a pair of floor girder beam beams provided on a skeleton member that forms a skeleton of a building, and installed on the four circumferences of the floor. A floor opening that is part of the floor in a direction along the floor girder large beam from one of the floor girder large beams, and is opened across the entire width in the direction along the floor girder large beam, and faces the floor opening. The beam girder reinforcing member attached to the pair of floor girder girder, the wife girder reinforcing member attached to the floor girder girder, and the girder girder reinforcing member and the girder girder reinforcing member supported from the floor. and small beam members disposed be low position, the floor openings of the external existing floor side edges smell Te of the existing between the floor and the small beam member at the level of the floor girder girders a first lower floor joists that spans between, in the floor opening, the existing floor The small between the beam members are arranged in substantially equal height as the first lower floor joists, and the first lower and the wife girders reinforcing member across the direction along the floor opening in the floor girder girders A second lower floor beam spanned between the floor beam and the second lower floor beam that covers a part of the floor opening and is supported by the second lower floor beam and extends along the floor girder beam. e Bei added and flooring, the forming an additional bed of consecutive floor, the wife girders reinforcing member, and the small beam support bracket for supporting the second lower floor joists, via said joists pivot bracket The floor structure of the building is characterized by comprising a support bracket support bracket for supporting the beam member at a position lower than the second lower floor beam .
According to a second aspect of the present invention, in the building floor structure according to the first aspect, the second lower floor beam and the beam member are arranged orthogonally. It was.

また、請求項に記載の発明は、請求項1または請求項2に記載の建物の床構造において、前記第2下床小梁は、長手方向の両端部が、前記妻大梁補強部材と前記第1下床小梁とにそれぞれ結合された小梁支持ブラケットに支持されていることを特徴とする建物の床構造とした。
また、請求項に記載の発明は、請求項1〜請求項3のいずれか1項に記載の建物の床構造において、前記付加床材の下側に、床断熱材が設けられていることを特徴とする建物の床構造とした。
また、請求項に記載の発明は、請求項に記載の建物の床構造において、前記小梁部材に落とし込み床材が支持されて、前記床よりも低い位置に落とし込み床が形成され、前記落とし込み床材の下側に、床断熱材が設けられ、前記落とし込み床の側縁と、前記床桁大梁及び床妻大梁との間に、側部断熱材が設けられていることを特徴とする建物の床構造とした。
また、請求項に記載の発明は、請求項1〜請求項のいずれか1項に記載の建物の床構造において、前記床開口部を通して前記小梁部材に、バスユニットが支持されていることを特徴とする建物の床構造とした。
In addition, the invention according to claim 3 is the floor structure of the building according to claim 1 or 2 , wherein the second lower floor beam has both ends in the longitudinal direction and the end face beam reinforcing member. The floor structure of the building is characterized by being supported by beam support brackets respectively coupled to the first lower floor beam.
The invention according to claim 4 is the building floor structure according to any one of claims 1 to 3 , wherein a floor heat insulating material is provided below the additional flooring. The floor structure of the building is characterized by
Further, the invention according to claim 5 is the floor structure of the building according to claim 4 , wherein a drop floor is supported by the beam member, and a drop floor is formed at a position lower than the floor, A floor heat insulating material is provided below the dropped floor material, and a side heat insulating material is provided between a side edge of the dropped floor and the floor girder beam and floor girder beam. The floor structure of the building was used.
According to a sixth aspect of the present invention, in the building floor structure according to any one of the first to fifth aspects, a bus unit is supported by the beam member through the floor opening. The floor structure of the building is characterized by this.

本発明では、床桁大梁間の全幅に亘って形成された床開口部の一部に、床開口部の外部の既設の床に連続する付加床を設定し、その残りの開口部分に、小梁部材を既設の床よりも低く設置した構造とした。
このため、床の造形バリエーションが増え、設計自由度が向上する。加えて、床開口部の周縁の床下には、第1下床小梁及び第2下床小梁を設置しているため、既設の床及び付加床の支持強度も確保できる。
In the present invention, an additional floor that is continuous with an existing floor outside the floor opening is set in a part of the floor opening formed across the entire width between the floor beams and a small opening is formed in the remaining opening. The beam member was installed lower than the existing floor.
For this reason, the modeling variation of a floor increases and a design freedom improves. In addition, since the first lower floor beam and the second lower floor beam are installed below the periphery of the floor opening, the supporting strength of the existing floor and the additional floor can be secured.

さらに、請求項に記載の発明では、第2下床小梁は、床開口部の両端部に配置された妻大梁補強部材と第1下床小梁とに結合された小梁支持ブラケットにより支持するようにした。このため、第2下床小梁による支持強度を確保できる。
また、請求項に記載の発明では、付加床材の下側に床断熱材を設けたため、床開口部に新設した付加床の断熱性を確保することができる。
さらに、請求項に記載の発明では、落とし込み床材を小梁部材により支持して形成した落とし込み床において、落とし込み床材の下側に床断熱材を設け、落とし込み床の側縁と床桁大梁及び床妻大梁との間に側部断熱材を設けたため、床開口部から落とし込んで設けた落とし込み床において高い断熱性を確保できる。
加えて、請求項に記載の発明では、小梁部材によりバスユニットを支持しているため、落とし込みタイプのバスユニットの設置自由度を向上できる。
Furthermore, in the invention according to claim 3 , the second lower floor beam is formed by a beam support bracket coupled to the end beam beam arranged at both ends of the floor opening and the first lower floor beam. I tried to support it. For this reason, the support strength by the second lower floor beam can be secured.
Moreover, in the invention of Claim 4 , since the floor heat insulating material was provided under the additional floor material, the heat insulation of the additional floor newly installed in the floor opening part can be ensured.
Further, in the invention according to claim 5 , in the dropped floor formed by supporting the dropped floor material with the small beam member, a floor heat insulating material is provided below the dropped floor material, and the side edge of the dropped floor and the floor girder beam Since the side heat insulating material is provided between the floor girder and the floor girder, high heat insulation can be secured in the dropped floor provided by dropping from the floor opening.
In addition, in the invention described in claim 6 , since the bus unit is supported by the small beam member, it is possible to improve the installation flexibility of the drop-in type bus unit.

図1は、本発明の実施の形態の建物の床構造を適用した建物ユニットの骨格部材を示す斜視図である。FIG. 1 is a perspective view showing a skeleton member of a building unit to which a building floor structure according to an embodiment of the present invention is applied. 図2は、実施の形態の建物の床構造を適用した建物ユニットの床構造部分を示す図であって、(a)は平面図であり、(b)は(a)のSb−Sb線の位置で切断した状態を示す断面図である。Drawing 2 is a figure showing the floor structure part of the building unit to which the floor structure of the building of an embodiment is applied, (a) is a top view, (b) is a line of Sb-Sb of (a). It is sectional drawing which shows the state cut | disconnected by the position. 図3は、実施の形態の建物の床構造を構築するための作業手順を示すフローチャートである。FIG. 3 is a flowchart illustrating a work procedure for constructing the floor structure of the building according to the embodiment. 図4は、実施の形態の建物の床構造の構築時の床小梁の撤去作業を説明する斜視図であり、(a)は撤去前、(b)は撤去途中、(c)は撤去後の状態を示す。FIG. 4 is a perspective view for explaining the removal work of the floor beam at the time of constructing the floor structure of the building according to the embodiment, (a) before removal, (b) during removal, (c) after removal. Shows the state. 図5は、実施の形態の建物の床構造の構築時の第1間仕切下床小梁取付作業を示す斜視図である。FIG. 5 is a perspective view illustrating a first partition lower floor beam beam attaching operation when the floor structure of the building according to the embodiment is constructed. 図6は、実施の形態の建物の床構造の構築時の妻大梁補強部材取付作業を示す斜視図である。FIG. 6 is a perspective view illustrating a work of attaching the end-to-end beam reinforcing member when the floor structure of the building according to the embodiment is constructed. 図7は、実施の形態の建物の床構造の構築時の桁梁補強部材取付作業を示す斜視図である。FIG. 7 is a perspective view showing a girder beam reinforcing member attaching operation when the floor structure of the building according to the embodiment is constructed. 図8は、実施の形態の建物の床構造の構築時の小梁受金具取付作業を示す斜視図である。FIG. 8 is a perspective view illustrating a work for attaching a beam support when the floor structure of the building according to the embodiment is constructed. 図9は、実施の形態の建物の床構造の構築時の小梁部材取付作業を示す斜視図である。FIG. 9 is a perspective view illustrating a beam member attaching operation when the floor structure of the building according to the embodiment is constructed. 図10は、実施の形態の建物の床構造の構築時の小梁部材取付作業において小梁部材の取付時の状態を図9とは視点を変えて示す斜視図である。FIG. 10 is a perspective view showing a state at the time of mounting the beam member in the beam beam mounting operation at the time of constructing the floor structure of the building according to the embodiment, changing the viewpoint from FIG. 9. 図11は、実施の形態の建物の床構造の構築時の小梁部材取付作業において第1間仕切下小梁の取付時の状態を図9とは視点を変えて示す斜視図である。FIG. 11 is a perspective view showing a state when the first beam under the partition is attached in the work of attaching the first beam at the time of constructing the floor structure of the building according to the embodiment, changing the viewpoint from FIG. 9. 図12は、実施の形態の建物の床構造の構築時の床根太取付作業を示す斜視図である。FIG. 12 is a perspective view illustrating a floor joist attaching operation when the floor structure of the building according to the embodiment is constructed. 図13は、実施の形態の建物の床構造の構築時の床断熱材設置作業を示す斜視図である。FIG. 13 is a perspective view illustrating a floor heat insulating material installation operation at the time of constructing the floor structure of the building according to the embodiment. 図14は、実施の形態の建物の床構造の構築時の床材設置作業を示す斜視図である。FIG. 14 is a perspective view illustrating a floor material installation operation at the time of building the floor structure of the building according to the embodiment. 図15は、実施の形態の建物の床構造の構築時の側部断熱材設置作業を示す斜視図である。FIG. 15 is a perspective view illustrating a side heat insulating material installation operation at the time of building the floor structure of the building according to the embodiment. 図16は、実施の形態の建物の床構造を用いたリフォームを説明するための図であり、(a)はリフォーム前のユニット建物の平面図であり、(b)はリフォーム後のユニット建物の平面図である。FIG. 16 is a diagram for explaining the renovation using the floor structure of the building of the embodiment, (a) is a plan view of the unit building before the renovation, and (b) is the unit building after the renovation. It is a top view.

以下、本発明の実施の形態について、添付図面を参照しながら説明する。
なお、本実施の形態では、図16(a)に示すユニット建物Hの1階部分を同図(b)に示すようにリフォームするのにあたり、特に、床上設置タイプのバスユニットBUbから、浴槽底部が床下に配置された落とし込みタイプのバスユニットBUに変更する場合について説明する。
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
In the present embodiment, when the first floor portion of the unit building H shown in FIG. 16 (a) is renovated as shown in FIG. Will be described as changing to a drop-in type bus unit BU placed under the floor.

以下に、実施の形態の床構造について図1〜図16に基づいて説明する。
図16に示すユニット建物Hは、複数の建物ユニットUNを結合して構成されている。各建物ユニットUNは、周知のように、図1に示す骨格となる金属製の骨格部材10を備えている。
Below, the floor structure of embodiment is demonstrated based on FIGS.
The unit building H shown in FIG. 16 is configured by combining a plurality of building units UN. As is well known, each building unit UN includes a metal skeleton member 10 serving as a skeleton shown in FIG.

骨格部材10は、その床構造部分は、図2(a)の平面図に示すように、一対の床桁大梁11,11と一対の床妻大梁12,12とにより長方形の枠状に形成され、床桁大梁11,11の間には、複数の金属製の床小梁13が架け渡されている。
また、天井部分も、天井桁大梁17,17と天井妻大梁18,18とにより長方形の枠状に形成され、長方形の四隅で柱19により床構造部分と結合されて箱枠状に形成されている。
As shown in the plan view of FIG. 2A, the skeletal member 10 is formed in a rectangular frame shape by a pair of floor girder beams 11 and 11 and a pair of floor girder beams 12 and 12. A plurality of metal floor beams 13 are bridged between the floor beams 11 and 11.
The ceiling portion is also formed in a rectangular frame shape by the ceiling girder beams 17 and 17 and the ceiling girder beams 18 and 18, and is formed in a box frame shape by being coupled to the floor structure portion by pillars 19 at the four corners of the rectangle. Yes.

図2(a)に示すように、床妻大梁12,12の間には、木製の床根太14が架け渡されている。なお、この床根太14は、図2(b)に示すように、床小梁13の上に設置されており、また、床根太14の上には、床材15が設けられている。   As shown in FIG. 2A, a wooden floor joist 14 is bridged between the floor girder beams 12 and 12. As shown in FIG. 2B, the floor joists 14 are installed on the floor beam 13, and a floor material 15 is provided on the floor joists 14.

本実施の形態では、建物ユニットUNにおいて、図2に示す設置領域SUに、他の領域の既設の床FLの高さよりも低い落とし込み床DFL(図15参照)を形成する。すなわち、本実施の形態では、住宅のリフォームにあたって、設置領域SUにバスユニットBU(図16参照)を設置する。このバスユニットBUは、その内部である浴室の床FL3(図16参照)と隣接する部屋の既設の床FL(図5参照)との段差を無くすと共に、浴室の床FL3から浴槽の縁までの立ち上がりの高さを、20cm〜45cm程度とした、いわゆる落とし込みタイプのものである。このため、設置領域SUに、浴室外の部屋の床FLの高さよりも低く落とし込み床DFL(図15参照)を形成するものである。   In the present embodiment, in the building unit UN, a dropped floor DFL (see FIG. 15) lower than the height of the existing floor FL in another area is formed in the installation area SU shown in FIG. That is, in the present embodiment, the bus unit BU (see FIG. 16) is installed in the installation area SU when renovating a house. This bus unit BU eliminates a step between the bathroom floor FL3 (see FIG. 16) and the existing floor FL (see FIG. 5) in the adjacent room, and from the bathroom floor FL3 to the edge of the bathtub. This is a so-called drop-in type whose rising height is about 20 cm to 45 cm. For this reason, the floor DFL (see FIG. 15) is formed in the installation area SU by dropping below the height of the floor FL of the room outside the bathroom.

そこで、本実施の形態では、まず、設置領域SUに落とし込み床DFLを形成するまでの作業手順を説明し、これに基づいて、実施の形態の建物の床構造を説明する。   Therefore, in the present embodiment, first, a work procedure until the dropping floor DFL is formed in the installation area SU will be described, and based on this, the floor structure of the building of the embodiment will be described.

図3は、作業手順を示すフローチャートである。
最初のステップS1では、床材、床根太、床小梁の撤去作業を行う。
次のステップS2では、第1間仕切下床小梁取付作業を行う。
次のステップS3では、妻大梁補強部材取付作業を行う。
次のステップS4では、桁大梁補強部材取付作業を行う。
次のステップS5では、小梁受金具取付作業を行う。
次のステップS6では、小梁部材取付作業を行う。
次のステップS7では、床根太取付作業を行う。
次のステップS8では、床断熱材設置作業を行う。
次のステップS9では、床材設置作業を行う。
次のステップS10では、側部断熱材設置作業を行う。
次のステップS11では、配管及び床材気密作業を行う。
次のステップS12では、バスユニット設置作業を行う。
FIG. 3 is a flowchart showing a work procedure.
In the first step S1, the floor material, floor joists and floor beam are removed.
In the next step S2, the first partition lower floor beam is attached.
In the next step S3, a work for attaching the end beam reinforcement member is performed.
In the next step S4, a girder beam reinforcing member attaching operation is performed.
In the next step S5, a small beam receiving bracket mounting operation is performed.
In the next step S6, a beam member mounting operation is performed.
In the next step S7, floor joist installation work is performed.
In the next step S8, floor insulation material installation work is performed.
In the next step S9, flooring installation work is performed.
In the next step S10, side heat insulating material installation work is performed.
In the next step S11, piping and flooring airtight work is performed.
In the next step S12, bus unit installation work is performed.

以下に、各作業について、詳細に説明する。
(床板、床根太、床小梁の撤去作業)
床材15、床根太14、床小梁13の撤去作業では、まず、図2に示す設置領域SUを含み、バスユニットBUbが設置されていた範囲において、木製の床材15及び床根太14を撤去し、さらに、金属製の床小梁13を撤去する。
本実施の形態では、2本の床小梁13,13(図2(a)において13(a)の符号を付したもの)を撤去する。この場合、図4(a)に示す床小梁13の長手方向両端に結合されていると共に床桁大梁11に結合された小梁受フランジ13aを、例えば、レシプロソーなどの切断機Cを用いて切断し、図4(b)(c)に示すように床小梁13を撤去する。
これにより、図5に示すように、床FLにおいて、設置領域SUを含んで建物ユニットの全幅(床妻大梁12に沿う方向の全幅)に亘って床開口部16が開口される。
Each operation will be described in detail below.
(Removal work of floor boards, floor joists and floor beams)
In the removal work of the floor material 15, the floor joist 14, and the floor beam 13, first, the wooden floor material 15 and the floor joist 14 are included within the range where the bus unit BUb is installed, including the installation area SU shown in FIG. Then, the metal floor beam 13 is removed.
In the present embodiment, the two floor beams 13 and 13 (the ones denoted by reference numeral 13 (a) in FIG. 2 (a)) are removed. In this case, the beam receiving flanges 13a connected to both ends in the longitudinal direction of the floor beam 13 shown in FIG. 4A and to the floor beam girder 11 are used, for example, by using a cutting machine C such as a reciprocating saw. It cut | disconnects and removes the floor beam 13 as shown in FIG.4 (b) (c).
As a result, as shown in FIG. 5, the floor opening 16 is opened over the entire width of the building unit (full width in the direction along the floor girder beam 12) including the installation area SU in the floor FL.

(第1間仕切下床小梁取付作業)
第1間仕切下床小梁取付作業は、床FLの床開口部16において、同ユニットの既設の床材15の端縁から少し間隔を空けた位置に第1間仕切下床小梁(第1下床小梁)21を設置する作業である。
(Installation work of first beam under floor beam)
The first partition lower floor beam is attached to the floor opening 16 of the floor FL at a position slightly spaced from the edge of the existing floor 15 of the unit (first lower floor beam). This is the work of installing the floor beam.

すなわち、バスユニットBUの設置位置には、図16(b)に示すように浴室を仕切るための第1間仕切壁W1及び第2間仕切壁W2を立設する。この第2間仕切壁W2を支持するために、その下方位置に、第1間仕切下床小梁21を設置する。
第1間仕切下床小梁21は、金属チャンネル状の本体21aと、その上面に本体21aに沿って螺子などにより固定された木桟21bとを備えている。そして、第1間仕切下床小梁21の本体21aの長手方向両端に結合された取付ブラケット21c,21cを、床桁大梁11に締結する。
That is, the first partition wall W1 and the second partition wall W2 for partitioning the bathroom are erected at the installation position of the bus unit BU as shown in FIG. In order to support the second partition wall W2, the first partition lower floor beam 21 is installed at a lower position thereof.
The first partition lower floor beam 21 includes a metal channel-shaped main body 21a and a wooden crosspiece 21b fixed to the upper surface of the main wall 21a by screws or the like along the main body 21a. And the attachment brackets 21c and 21c couple | bonded with the longitudinal direction both ends of the main body 21a of the 1st partition lower floor beam 21 are fastened to the floor beam girder 11. FIG.

また、本体21aには、図6に示すように、床妻大梁12に対向する側面に小梁支持ブラケット23が取り付けられている。この小梁支持ブラケット23は、後述する第2間仕切下床小梁(第2下床小梁)22を支持するためのもので、図11にも示すように、水平方向の支持板23aの両側から側板23b,23bを立ち上げて、上方に開口したU字断面形状に形成されている。   Further, as shown in FIG. 6, a small beam support bracket 23 is attached to the main body 21 a on the side surface facing the floor gable large beam 12. This beam support bracket 23 is for supporting a second partition lower floor beam (second beam lower beam) 22 which will be described later, and as shown in FIG. 11, both sides of the horizontal support plate 23a. The side plates 23b and 23b are raised from the top and formed in a U-shaped cross-sectional shape opened upward.

(妻大梁補強部材取付作業)
妻大梁補強部材取付作業は、図6に示すように、床妻大梁12に後述する小梁部材60及び第2間仕切下床小梁22(図9参照)を支持するための妻大梁補強部材30を取り付ける作業である。
(Installation work of Tsumagogi reinforcement member)
As shown in FIG. 6, the end-to-end beam reinforcing member mounting operation is performed on the end-to-end beam beam 12 to support a later-described end beam member 60 and a second partition lower floor end beam 22 (see FIG. 9). It is work to attach.

妻大梁補強部材30は、金属製のベース部材31と受金具支持ブラケット32,32と小梁支持ブラケット33とを備えている。
ベース部材31は、C型チャンネル状の床妻大梁12の下側フランジ12aと側板12bとに沿うことが可能なL字断面形状に形成されている。
受金具支持ブラケット32は、後述する小梁部材60を支持するための小梁受金具50(図8参照)を取り付けるためのブラケットで、ベース部材31から水平方向に突出されて溶接などにより一体に結合されている。この受金具支持ブラケット32は、一対の側板32a,32aと、これら側板32a,32aの上端を結ぶ上板32bとにより、逆U字断面形状に形成されている。
小梁支持ブラケット33は、後述する第2間仕切下床小梁22を支持するためのブラケットで、図11にも示すように、水平方向の支持板33aの両側から側板33b,33bを立ち上げて、上方に開口したU字断面形状に形成されている。
なお、この小梁支持ブラケット33は、前述した小梁支持ブラケット23と、水平方向で対向して配置されている。
The wife large beam reinforcing member 30 includes a metal base member 31, receiving metal support brackets 32 and 32, and a small beam support bracket 33.
The base member 31 is formed in an L-shaped cross-sectional shape that can follow the lower flange 12a and the side plate 12b of the floor girder 12 having a C-shaped channel shape.
The bracket support bracket 32 is a bracket for attaching a beam support 50 (see FIG. 8) for supporting the beam member 60 described later. The bracket support bracket 32 protrudes from the base member 31 in the horizontal direction and is integrated by welding or the like. Are combined. The bracket support bracket 32 is formed in an inverted U-shaped cross section by a pair of side plates 32a and 32a and an upper plate 32b connecting the upper ends of the side plates 32a and 32a.
The beam support bracket 33 is a bracket for supporting a second partition lower floor beam 22 which will be described later, and as shown in FIG. It is formed in a U-shaped cross section opening upward.
The beam support bracket 33 is disposed to face the beam support bracket 23 described above in the horizontal direction.

妻大梁補強部材30は、図7に示すように、床妻大梁12に結合する。この結合は、ベース部材31の複数箇所にあらかじめ下孔を開け、STロックなどと称される一方からの作業で締結できる締結具を用いるのが好ましい。なお、ベース部材31と床妻大梁12の下側フランジ12aとの間には、シート状のスペーサ39を介在させる(図6参照)。   As shown in FIG. 7, the end-face beam reinforcing member 30 is coupled to the floor end-end beam 12. For this connection, it is preferable to use a fastener that can be prepared by drilling pilot holes in advance at a plurality of locations on the base member 31 and fastening it by one of the operations called ST lock. Note that a sheet-like spacer 39 is interposed between the base member 31 and the lower flange 12a of the floor girder 12 (see FIG. 6).

(桁梁補強部材取付作業)
桁梁補強部材取付作業は、図7に示すように、床桁大梁11,11に後述する小梁部材60を支持するための一対の桁大梁補強部材40を取り付ける作業である。
(Girder beam reinforcement member installation work)
As shown in FIG. 7, the beam beam reinforcing member mounting operation is a task of mounting a pair of beam beam reinforcing members 40 for supporting the beam members 60 described later on the floor beam beams 11 and 11.

桁大梁補強部材40は、金属製のベース部材41と3つの受金具支持ブラケット42,42,42とを備えている。
ベース部材41は、C型チャンネル状の床桁大梁11の下側フランジ11aと側板11bとに沿うことが可能なL字断面形状に形成されている。
受金具支持ブラケット42は、溶接などにより一体に結合されており、一対の側板42a,42aと、これら側板42a,42aの上端を結ぶ上板42bとにより、逆U字断面形状に形成されている。なお、一対の桁大梁補強部材40は、各受金具支持ブラケット42が、後述する小梁部材60の設置位置に応じ、床妻大梁12に沿う方向に対向して配置されている。
The girder beam reinforcing member 40 includes a metal base member 41 and three metal support brackets 42, 42, 42.
The base member 41 is formed in an L-shaped cross-sectional shape that can follow the lower flange 11a and the side plate 11b of the C-shaped channel-shaped floor girder beam 11.
The support bracket support bracket 42 is integrally coupled by welding or the like, and is formed in an inverted U-shaped cross section by a pair of side plates 42a and 42a and an upper plate 42b that connects the upper ends of the side plates 42a and 42a. . The pair of girder beam support members 40 are arranged so that the respective bracket support brackets 42 face each other in the direction along the floor girder beam 12 according to the installation position of the beam members 60 described later.

この桁大梁補強部材40の床桁大梁11への結合は、ベース部材41の複数箇所にあらかじめ下孔を開け、STロックなどと称される一方からの作業で締結できる締結具を用いるのが好ましい。なお、ベース部材41と床桁大梁11の下側フランジ11aとの間には、シート状のスペーサ49を介在させる。   The girder beam reinforcing member 40 is preferably joined to the floor girder beam 11 by using a fastener that has holes prepared in advance at a plurality of locations on the base member 41 and can be fastened by one operation called ST lock or the like. . A sheet-like spacer 49 is interposed between the base member 41 and the lower flange 11a of the floor beam girder 11.

(小梁受金具取付作業)
小梁受金具取付作業は、各補強部材30,40の受金具支持ブラケット32,42に、それぞれ、小梁部材60を支持するための小梁受金具50を取り付ける作業である。
(Installation work of small beam bracket)
The small beam bracket mounting operation is an operation of mounting the small beam bracket 50 for supporting the small beam member 60 to the bracket support brackets 32 and 42 of the reinforcing members 30 and 40, respectively.

小梁受金具50は、図8に示すように、Z型鋼製のベース51の両側に側部フランジ52,52を立ち上げ、ベース51の上裏側と下表側とに箱状の上側受部53と下側受部54とが形成されている。   As shown in FIG. 8, the small beam receiving bracket 50 has side flanges 52, 52 raised on both sides of a Z-shaped steel base 51, and box-shaped upper receiving portions on the upper back side and lower front side of the base 51. 53 and a lower receiving portion 54 are formed.

すなわち、ベース51は、受金具支持ブラケット32,42の上板32b,42bの上面に被せられる上部フランジ51aと、この上部フランジ51aから略直角に折曲されて下方に延在された脚板51bと、この脚板51bの下端部から裏側の上部フランジ51aとは逆に表側に略直角に折曲されて後述する小梁部材を受け止める下部フランジ51cとを備えている。
側部フランジ52,52は、脚板51bの側端縁に結合されると共に、上部フランジ51aと下部フランジ51cとの両側縁に結合されている。
したがって、図8において拡大して示すように、小梁受金具50の脚板51bの表面側の下端部には、脚板51bと、下部フランジ51cと、その左右の側部フランジ52,52により箱状に囲まれた下側受部54が形成されている。
これと同様に、小梁受金具50の脚板51bの裏面側の上端部には、脚板51bと、上部フランジ51aと、その左右の側部フランジ52,52により箱状に囲まれた上側受部53が形成されている。
That is, the base 51 includes an upper flange 51a that covers the upper surfaces of the upper plates 32b and 42b of the bracket support brackets 32 and 42, and a leg plate 51b that is bent substantially perpendicularly from the upper flange 51a and extends downward. The lower flange 51c is bent from the lower end portion of the leg plate 51b to the front side at a substantially right angle to receive the small beam member described later.
The side flanges 52 and 52 are coupled to the side edge of the leg plate 51b and are coupled to both side edges of the upper flange 51a and the lower flange 51c.
Therefore, as shown in an enlarged view in FIG. 8, a box-like shape is formed by a leg plate 51b, a lower flange 51c, and left and right side flanges 52, 52 at the lower end portion on the surface side of the leg plate 51b. A lower receiving portion 54 surrounded by is formed.
Similarly, an upper receiving portion surrounded by a box shape by a leg plate 51b, an upper flange 51a, and left and right side flanges 52, 52 is provided at the upper end portion of the rear surface of the leg plate 51b. 53 is formed.

このような小梁受金具50を、各補強部材30,40の受金具支持ブラケット32,42に取り付ける場合、図8において拡大して示しているように、上部フランジ51aを各受金具支持ブラケット32,42の上側から被せるようにして、各受金具支持ブラケット32,42の外周に上側受部53を装着して、締結材により締結して固定する。   When attaching such a small beam bracket 50 to the bracket support brackets 32, 42 of the reinforcing members 30, 40, the upper flange 51a is connected to each bracket support bracket 32 as shown in an enlarged manner in FIG. The upper receiving portion 53 is attached to the outer periphery of each of the bracket support brackets 32, 42 so as to be covered from the upper side of the brackets 42, and is fastened and fixed by a fastening material.

(小梁部材取付作業)
小梁部材取付作業では、図9に示す小梁部材60及び第2間仕切下床小梁22を、骨格部材10に取り付ける。
小梁部材60は、図10に示すように、金属製で長方形筒状に形成されている。さらに、3本の小梁部材60のうちで、床妻大梁12の近傍に設置される小梁部材60には、床妻大梁12の方向に突出した連結受具63が設けられている。
(Beam member installation work)
In the small beam member attaching operation, the small beam member 60 and the second partition lower floor small beam 22 shown in FIG. 9 are attached to the skeleton member 10.
As shown in FIG. 10, the beam member 60 is made of metal and has a rectangular cylindrical shape. Further, among the three small beam members 60, the small beam member 60 installed in the vicinity of the floor girder large beam 12 is provided with a coupling receiver 63 protruding in the direction of the floor gable large beam 12.

各小梁部材60は、長手方向両端部を、小梁受金具50の下側受部54において下部フランジ51cの上に載置し、切欠部64の上方から、ボルトなどの締結具を用いて小梁受金具50に締結して固定される。
なお、床妻大梁12の近傍に設置される小梁部材60は、隣り合う小梁部材60と連結小梁65により連結される。
Each beam member 60 has both longitudinal ends thereof placed on the lower flange 51c at the lower receiving portion 54 of the beam receiving metal fitting 50, and a fastener such as a bolt is used from above the notch portion 64. Fastened to the beam support 50 and fixed.
The small beam member 60 installed in the vicinity of the floor gable large beam 12 is connected to the adjacent small beam member 60 by the connecting small beam 65.

また、第2間仕切下床小梁22は、小梁部材60と同様に、金属製で四角筒状に形成されており、長手方向両端部を、小梁支持ブラケット23,33に、ボルトなどの締結具を用いて結合される。   Similarly to the small beam member 60, the second partition lower floor beam 22 is made of metal and is formed in a square tube shape, and both ends in the longitudinal direction are attached to the small beam support brackets 23 and 33 such as bolts. Coupled using fasteners.

(床根太取付作業)
床根太取付作業は、各間仕切下床小梁21,22と床桁大梁11及び床小梁13との間に第1付加根太24a及び第2付加床根太24bを掛け渡す作業である。
すなわち、第1付加根太24aは、既設の床根太14に接して配置されて、第1間仕切下床小梁21とこれに隣り合う床小梁13との間に掛け渡されて固定されている。
(Floor joist installation work)
The floor joist attaching operation is an operation of spanning the first additional joist 24a and the second additional joist 24b between the partition lower floor beams 21 and 22 and the floor girder beam 11 and the floor beam 13.
That is, the first additional joist 24a is disposed in contact with the existing floor joist 14, and is spanned and fixed between the first partition lower floor beam 21 and the floor beam 13 adjacent thereto. .

また、第2間仕切下床小梁22も、第1間仕切下床小梁21と同様に、その上面に木桟22bが固定されている。そして、第2付加床根太24bは、第2間仕切下床小梁22と床桁大梁11との間に掛け渡されて固定されている。   Similarly to the first partition lower floor beam 21, the second partition lower floor beam 22 has a wooden crosspiece 22 b fixed to the upper surface thereof. The second additional floor joists 24b are spanned and fixed between the second partition lower floor beam 22 and the floor beam girder 11.

(床断熱材設置作業)
床断熱材設置作業は、床開口部16において、床面の下方位置に、図13に示すように板状の床断熱材71a,71bを設置する作業である。
(Floor insulation installation work)
The floor heat insulating material installation operation is an operation of installing plate-like floor heat insulating materials 71a and 71b in the floor opening 16 at a position below the floor surface as shown in FIG.

すなわち、本実施の形態では、床開口部16には、図15に示すように、新に、設置領域SUに隣り合って既設の床FLと同じ高さに連続するように付加された付加床AFLと、既設の床FLよりも低い位置の落とし込み床DFLと、を設置する。   In other words, in the present embodiment, as shown in FIG. 15, an additional floor newly added adjacent to the installation area SU so as to be continuous with the existing floor FL is provided in the floor opening 16. An AFL and a dropped floor DFL at a position lower than the existing floor FL are installed.

床断熱材71a,71bは、これらの落とし込み床DFLと付加床AFLとに設置する。
この設置にあたり、詳細な図示は省略するが、小梁部材60及び第2付加床根太24bから、その下面の高さに水平方向に支持材(図示省略)を延ばしておく。また、床断熱材71a,71bは、小梁部材60の間の空間、及び第2付加床根太24bの間の空間の平面形状に一致する形状に切断した上で、この空間内に配置し、前述した支持材(図示省略)によりその下面を支持するようにして設置する。
なお、板状の床断熱材71a,71bとしては、例えば、フェノール樹脂を発泡硬化させたものを用いる。
The floor heat insulating materials 71a and 71b are installed on the dropped floor DFL and the additional floor AFL.
In this installation, although not shown in detail, a support member (not shown) is extended from the beam member 60 and the second additional floor joist 24b to the height of the lower surface thereof in the horizontal direction. In addition, the floor heat insulating materials 71a and 71b are cut into a shape that matches the planar shape of the space between the beam members 60 and the space between the second additional floor joists 24b, and then disposed in this space. It is installed so that its lower surface is supported by the support material (not shown).
In addition, as the plate-like floor heat insulating materials 71a and 71b, for example, a material obtained by foaming and curing a phenol resin is used.

(床材設置作業)
床材設置作業は、図14に示すように、落とし込み床DFLと付加床AFLとの位置(図15参照)及び第1間仕切壁W1及び第2間仕切壁W2(図16参照)の設置位置に、それぞれ、落とし込み床材15bと第1付加床材15c及び第2付加床材15dを設置する。
(Floor installation work)
As shown in FIG. 14, the floor material installation work is performed at the positions of the dropped floor DFL and the additional floor AFL (see FIG. 15) and the installation positions of the first partition wall W1 and the second partition wall W2 (see FIG. 16). The dropped flooring 15b, the first additional flooring 15c, and the second additional flooring 15d are respectively installed.

すなわち、落とし込み床材15bは、小梁部材60に螺子止めし、第1付加床材15cは、第2付加床根太24bに螺子止めし、第2付加床材15dは、第1付加床根太24aに螺子止めする。
なお、第2付加床材15dは、第2間仕切壁W2を支持するための床材であって、第2間仕切壁W2の厚みと略同一の幅に形成されている、
(側部断熱材設置作業)
側部断熱材設置作業は、落とし込み床DFLの側面に、側部断熱材72を設置する作業である。
本実施の形態では、側部断熱材72として変形容易なグラスウールを用い、図15に示すように、落とし込み床DFLの側面の全周に亘って隙間無く敷き込み、図示を省略した鋲打機などを用いて針などの固定具により固定する。なお、この側部断熱材72は、気密性を有した接着テープにより上面を覆って気密性を確保するのが好ましい。
That is, the dropped floor material 15b is screwed to the beam member 60, the first additional floor material 15c is screwed to the second additional floor joist 24b, and the second additional floor material 15d is screwed to the first additional floor joist 24a. Screw on to.
The second additional flooring 15d is a flooring for supporting the second partition wall W2, and is formed to have a width substantially the same as the thickness of the second partition wall W2.
(Side insulation installation work)
The side heat insulating material installation operation is an operation of installing the side heat insulating material 72 on the side surface of the dropped floor DFL.
In the present embodiment, glass wool that is easily deformable is used as the side heat insulating material 72, and, as shown in FIG. 15, a nailing machine that is laid without gaps over the entire circumference of the side surface of the dropped floor DFL, etc. Use a needle to fix it with a fixture such as a needle. The side heat insulating material 72 is preferably airtight by covering the upper surface with an airtight adhesive tape.

(配管及び床材気密作業)
配管及び床材気密作業は、以上のようにして形成した落とし込み床DFLの必要箇所に穴を開けて配管を行い、第1付加床材15cの間の隙間や、配管による穴の隙間などを、接着テープ(図示省略)などによりシールして気密性を確保する作業である。
(Piping and flooring airtight work)
Piping and flooring airtight work is performed by drilling holes in the required place of the dropped floor DFL formed as described above, and the gap between the first additional flooring 15c, the gap of the hole by the piping, etc. This is an operation to ensure airtightness by sealing with an adhesive tape (not shown).

(バスコア設置作業)
バスコア設置作業は、図16(b)に示すバスユニットBUを、落とし込み床DFLに設置する作業である。さらに、このバスユニットBUの設置に伴い、各間仕切下床小梁21,22の上方位置に、各間仕切壁W1,W2を設置する。
(Bus core installation work)
The bus core installation work is an operation of installing the bus unit BU shown in FIG. 16B on the dropped floor DFL. Further, with the installation of the bus unit BU, the partition walls W1 and W2 are installed at positions above the partition lower floor beams 21 and 22.

この第2間仕切壁W2の設置状態で、付加床AFLは、図16(b)に示すように、浴室の外部の玄関スペースに含まれることになる。   In the installed state of the second partition wall W2, the additional floor AFL is included in the entrance space outside the bathroom as shown in FIG. 16 (b).

以上のようにして構成された実施の形態の建物の床構造は、建物ユニットUNの骨格を形成する骨格部材10において、床妻大梁12に沿う方向の全幅に亘って開口された床開口部16と、床開口部16に面して、床桁大梁11,11に取り付けられた桁大梁補強部材40及び床妻大梁12に取り付けられた妻大梁補強部材30と、桁大梁補強部材40及び妻大梁補強部材30により支持されて既設の床FLよりも低い位置に配置された小梁部材60と、床開口部16の端縁部に配置されて、床桁大梁11,11の間に架け渡された第1間仕切下床小梁21と、床開口部16において、既設の床FLよりも低い高さに配置され、かつ、床開口部16を床桁大梁11に沿う方向に横切って、妻大梁補強部材30と第1間仕切下床小梁21との間に架け渡された第2間仕切下床小梁22と、第2間仕切下床小梁22に支持され、床開口部16の一端部を覆って床桁大梁11に沿って既設の床FLに連続する付加床AFLを形成する第1付加床材15cとを備えていることを特徴とする建物の床構造である。   The floor structure of the building of the embodiment configured as described above has a floor opening 16 that is opened over the entire width in the direction along the floor girder beam 12 in the skeleton member 10 that forms the skeleton of the building unit UN. Facing the floor opening 16, the beam girder reinforcement member 40 attached to the floor girder beams 11, 11 and the girder beam reinforcement member 30 attached to the floor girder beam 12, the girder beam reinforcement member 40, and the girder beam The beam member 60 supported by the reinforcing member 30 and disposed at a position lower than the existing floor FL is disposed at the end edge of the floor opening 16 and is bridged between the floor beams 11 and 11. The first partition lower floor beam 21 and the floor opening 16 are arranged at a lower height than the existing floor FL, and cross the floor opening 16 in the direction along the floor beam girder 11 so as to cross the tread beam. Between the reinforcing member 30 and the first partition lower floor beam 21 It is supported by the spanning second partition lower floor beam 22 and the second partition lower floor beam 22, spans one end of the floor opening 16, and continues to the existing floor FL along the floor girder beam 11. The floor structure of a building is characterized by comprising a first additional floor material 15c forming the additional floor AFL.

また、第2間仕切下床小梁22は、長手方向の両端部が、妻大梁補強部材30と第1間仕切下床小梁21とに結合された小梁支持ブラケット23,33に支持されている。
さらに、第1付加床材15cの下側に、板状の床断熱材71bが設けられている。
そして、小梁部材60に落とし込み床材15bが支持されて、既設の床FLよりも低い位置に落とし込み床DFLが形成され、落とし込み床DFLの下側に、床断熱材71aが設けられ、落とし込み床DFLの側縁と、床桁大梁11,11及び床妻大梁12との間に、側部断熱材72が設けられている。
また、床開口部16を通して小梁部材60に、バスユニットBUが支持されている。
Further, the second partition lower floor beam 22 is supported at both ends in the longitudinal direction by beam support brackets 23 and 33 coupled to the end large beam reinforcing member 30 and the first partition lower floor beam 21. .
Further, a plate-like floor heat insulating material 71b is provided below the first additional floor material 15c.
Then, the dropped floor member 15b is supported by the beam member 60, the dropped floor DFL is formed at a position lower than the existing floor FL, and a floor heat insulating material 71a is provided below the dropped floor DFL. A side heat insulating material 72 is provided between the side edge of the DFL and the floor girder beams 11 and 11 and the floor girder beam 12.
Further, the bus unit BU is supported on the beam member 60 through the floor opening 16.

以上のように構成された実施の形態の建物の床構造は、以下に列挙する効果を有している。
a)建物の床FLに床開口部16を設けて落とし込み床DFLを形成した床構造において、床開口部16の一部に付加床AFLを設定したため、床開口部16の一部のみを落とし込み床DFLとした設定が可能となった。
したがって、床開口部16の全体を落とし込み床とするもののみの場合と比較して、設計自由度が向上する。
具体的には、落とし込み床DFLに落とし込みタイプのバスユニットBUを設置する場合、設置するバスユニットBUの大きさの自由度が広がる。加えて、付加床AFLは、実施の形態で示したように、バスユニットBUを設置する建物ユニットUNの外部の玄関スペースと繋げて使用することも可能となり、この点でも設計自由度が向上する。
The building floor structure of the embodiment configured as described above has the following effects.
a) In the floor structure in which the floor opening 16 is provided on the floor FL of the building to form the dropped floor DFL, since the additional floor AFL is set in a part of the floor opening 16, only a part of the floor opening 16 is dropped. Setting as DFL became possible.
Therefore, the degree of freedom in design is improved as compared with the case where only the entire floor opening 16 is dropped into the floor.
Specifically, when a drop-type bus unit BU is installed on the drop-in floor DFL, the degree of freedom of the size of the installed bus unit BU is increased. In addition, as shown in the embodiment, the additional floor AFL can be used by being connected to the entrance space outside the building unit UN where the bus unit BU is installed, and the degree of freedom in design is also improved in this respect. .

b)第1間仕切壁W1及び第2間仕切壁W2の設置位置には、その下方に第1間仕切下床小梁21及び第2間仕切下床小梁22を設置しているため、各間仕切壁W1,W2に対する十分な支持強度を確保することができる。しかも、両間仕切下床小梁21,22は、骨格部材10の床桁大梁11,11及び床妻大梁12に、直接あるいは間接的に結合しているため、両間仕切下床小梁21,22による支持強度も確保できる。   b) Since the first partition lower floor beam 21 and the second partition lower floor beam 22 are installed below the first partition wall W1 and the second partition wall W2, the partition walls W1 , W2 can provide sufficient support strength. Moreover, since the both-partitioned lower floor beams 21 and 22 are directly or indirectly coupled to the floor girders 11 and 11 and the floor girder-beam 12 of the skeleton member 10, both-partitioned lower floor beams 21 and 22 are separated. Support strength can be secured.

c)付加床AFLの端部であって、第1間仕切壁W1を支持する第2間仕切下床小梁22は、床開口部16の端部に配置され、かつ、金属製で強度を有した妻大梁補強部材30と第1間仕切下床小梁21とに結合された小梁支持ブラケット33,23により支持するようにした。このため、第2間仕切下床小梁22による支持強度を確保できる。   c) The second partition lower floor beam 22 which is the end of the additional floor AFL and supports the first partition wall W1 is disposed at the end of the floor opening 16, and is made of metal and has strength. It was made to support by the beam support brackets 33 and 23 couple | bonded with the wife large beam reinforcement member 30 and the 1st partition lower floor beam 21. For this reason, the support strength by the second partition lower floor beam 22 can be secured.

d)床開口部16に設けた床である落とし込み床DFL及び付加床AFLには、それぞれ落とし込み床材15b及び第1付加床材15cの下面に床断熱材71a,71bを設置した。このため、浴室のみならず、建物ユニットUNの断熱性を確保できる。
加えて、落とし込み床DFLには、その側面部分である落とし込み床材15bと、各大梁11,11,12及び第1間仕切下床小梁21との間に、側部断熱材72を設けた。このため、建物ユニットUNと外部との間に、各断熱材71a,71b,72が敷き詰められて、さらに断熱性に優れたものとすることができる。
d) In the dropped floor DFL and the additional floor AFL, which are floors provided in the floor opening 16, floor insulating materials 71a and 71b are installed on the lower surfaces of the dropped floor 15b and the first additional floor 15c, respectively. For this reason, the heat insulation of not only a bathroom but building unit UN is securable.
In addition, the dropped floor DFL is provided with a side heat insulating material 72 between the dropped floor material 15b, which is a side surface portion thereof, and each of the large beams 11, 11, 12 and the first partition lower floor beam 21. For this reason, each heat insulating material 71a, 71b, 72 is spread | laid between the building unit UN and the exterior, and it can be made more excellent in heat insulation.

e)小梁部材60を、各大梁11,12よりも低い位置で支持するための小梁受金具50は、各補強材30,40において、水平方向に突出させた受金具支持ブラケット32,42に支持させるようにした。
このため、各大梁11,12の下方にコンクリート製などの基礎が存在する場合も、小梁受金具50及び小梁部材60を、基礎と干渉すること無くその内側に配置することができる。
e) A small beam receiving bracket 50 for supporting the small beam member 60 at a position lower than each of the large beams 11 and 12 is a receiving bracket supporting bracket 32 and 42 that protrudes in the horizontal direction in the reinforcing members 30 and 40. To support.
For this reason, even when a foundation made of concrete or the like is present below each of the large beams 11 and 12, the small beam receiving bracket 50 and the small beam member 60 can be disposed on the inside thereof without interfering with the foundation.

以上、本発明の実施の形態について説明したが、本発明はこうした実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変形及び置換を加えることができる。   As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment, In the range which does not deviate from the summary of this invention, a various deformation | transformation and substitution can be added.

例えば、実施の形態では、建物として建物ユニットを結合させて形成したユニット建物を例示したが、建物としては、ユニット建物以外の建物にも適用することができる。   For example, in the embodiment, the unit building formed by combining the building units as the building is illustrated, but the building can be applied to a building other than the unit building.

また、実施の形態では、落とし込み床にバスユニットを設置した例を示したが、バスユニットを設置するものに限定されず、例えば、リビングなど住居空間のバリエーションとして床の一部に落とし込み床を形成するのに適用してもよい。   In the embodiment, the example in which the bus unit is installed on the dropped floor is shown. However, the present invention is not limited to the one in which the bus unit is installed. It may be applied to

また、第1間仕切下床小梁は、既設の床の端縁部の下側に設置してもよく、この場合、第2付加床材の設定は不要となる。   Further, the first partition lower floor beam may be installed below the edge of the existing floor, and in this case, setting of the second additional floor material is not necessary.

また、小梁部材は、その形状や数は、実施の形態で示したものに限定されず、任意に設定してよい。   Further, the shape and number of the beam members are not limited to those shown in the embodiment, and may be arbitrarily set.

また、第1及び第2下床小梁として、間仕切壁の下方に配置される第1及び第2間仕切下床小梁を示したが、これら各下床小梁は、既設の床の端縁あるいは、付加床材を支持するものであれば、間仕切壁を支持しないものであってもよい。   Moreover, although the 1st and 2nd partition lower floor beam was shown below the partition wall as the 1st and 2nd lower floor beam, each of these lower floor beams is an edge of the existing floor Or as long as it supports an additional flooring, you may not support a partition wall.

10 骨格部材
11 床桁大梁
12 床妻大梁
15 床材
15b 落とし込み床材
15c 第1付加床材
16 床開口部
21 第1間仕切下床小梁(第1下床小梁)
22 第2間仕切下床小梁(第2下床小梁)
23 小梁支持ブラケット
30 妻大梁補強部材
33 小梁支持ブラケット
40 桁大梁補強部材
50 小梁受金具
60 小梁部材
71a 床断熱材
71b 床断熱材
72 側部断熱材
AFL 付加床
BU バスユニット
DFL 落とし込み床
FL 床
H ユニット建物
DESCRIPTION OF SYMBOLS 10 Frame member 11 Floor girder beam 12 Floor girder beam 15 Floor material 15b Dropping floor material 15c First additional floor material 16 Floor opening 21 First partition lower floor beam (first lower floor beam)
22 Second partition lower floor beam (second lower floor beam)
23 Beam support bracket 30 Tsum beam support member 33 Beam support bracket 40 Girder beam support member 50 Beam support 60 Beam member 71a Floor insulation 71b Floor insulation 72 Side insulation AFL Additional floor BU Bus unit DFL Dropping Floor FL Floor H Unit building

Claims (6)

建物の骨格を形成する骨格部材に設けられ、床の四周に設置された一対の床妻大梁及び一対の床桁大梁と、
前記床において、前記一対の床妻大梁の一方から前記床桁大梁に沿う方向の前記床の一部であって、前記床妻大梁に沿う方向の全幅に亘って開口された床開口部と、
前記床開口部に面して、前記一対の床桁大梁に取り付けられた桁大梁補強部材及び前記床妻大梁に取り付けられた妻大梁補強部材と、
前記桁大梁補強部材及び前記妻大梁補強部材により支持されて前記床よりも低い位置に配置された小梁部材と、
前記床開口部の外部の既設の床側の端縁部において前記既設の床と前記小梁部材との間の高さで前記床桁大梁の間に架け渡された第1下床小梁と、
前記床開口部において、前記既設の床と前記小梁部材との間で第1下床小梁と略等しい高さに配置され、かつ、前記床開口部を前記床桁大梁に沿う方向に横切って前記妻大梁補強部材と前記第1下床小梁との間に架け渡された第2下床小梁と、
前記床開口部の一部を覆って前記第2下床小梁に支持され、前記床桁大梁に沿う方向に前記既設の床に連続する付加床を形成する付加床材と、
を備え、
前記妻大梁補強部材は、前記第2下床小梁を支持する小梁支持ブラケットと、小梁受金具を介して前記第2下床小梁よりも低位置に前記小梁部材を支持する受金具支持ブラケットとを備えることを特徴とする建物の床構造。
A pair of floor girder beams and a pair of floor girder beams installed on the skeleton members forming the skeleton of the building,
In the floor, a floor opening that is a part of the floor in a direction along the floor girder beam from one of the pair of floor beams, and is opened over the entire width in the direction along the floor beam.
Facing the floor opening, the beam girder reinforcing member attached to the pair of floor girder girder and the wife girder reinforcing member attached to the floor girder girder,
A beam member supported by the beam beam reinforcement member and the end beam reinforcement member and disposed at a position lower than the floor;
The first lower floor joists that bridged between the floor girder girders at a height between the floor openings of the external existing floor side edges smell Te of the existing floor and the small beam member When,
The floor opening is disposed at a height substantially equal to the first lower floor beam between the existing floor and the beam member , and crosses the floor opening in a direction along the floor girder beam. A second lower floor beam spanned between the wife large beam reinforcing member and the first lower floor beam;
An additional floor material that covers a part of the floor opening, is supported by the second lower floor beam, and forms an additional floor continuous with the existing floor in a direction along the floor beam girder;
Bei to give a,
The wife large beam reinforcing member includes a beam supporting bracket that supports the second lower floor beam, and a receiving beam that supports the beam member at a position lower than the second lower floor beam through a beam receiving bracket. A building floor structure comprising a bracket support bracket .
前記第2下床小梁と前記小梁部材は直交配置されていることを特徴とする請求項1に記載の建物の床構造。The building floor structure according to claim 1, wherein the second lower floor beam and the beam members are arranged orthogonally. 前記第2下床小梁は、長手方向の両端部が、前記妻大梁補強部材と前記第1下床小梁とにそれぞれ結合された小梁支持ブラケットに支持されていることを特徴とする請求項1または請求項2に記載の建物の床構造。 The second lower floor beam is supported at both ends in the longitudinal direction by a beam support bracket coupled to the end beam beam reinforcing member and the first lower beam beam, respectively. The floor structure of the building of Claim 1 or Claim 2 . 前記付加床材の下側に、床断熱材が設けられていることを特徴とする請求項1〜請求項3のいずれか1項に記載の建物の床構造。 The floor structure of a building according to any one of claims 1 to 3, wherein a floor heat insulating material is provided below the additional floor material. 前記小梁部材に落とし込み床材が支持されて、前記床よりも低い位置に落とし込み床が形成され、
前記落とし込み床材の下側に、床断熱材が設けられ、
前記落とし込み床の側縁と、前記床桁大梁及び床妻大梁との間に、側部断熱材が設けられていることを特徴とする請求項4に記載の建物の床構造。
The dropped floor material is supported by the beam member, and the dropped floor is formed at a position lower than the floor,
A floor insulation is provided under the dropped flooring,
The building floor structure according to claim 4 , wherein a side heat insulating material is provided between a side edge of the dropped floor and the floor girder girder and floor gable girder.
前記床開口部を通して前記小梁部材に、バスユニットが支持されていることを特徴とする請求項1〜請求項5のいずれか1項に記載の建物の床構造。 The building floor structure according to any one of claims 1 to 5 , wherein a bus unit is supported by the beam member through the floor opening.
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