JP2017122370A - Horizontal member and structure for mounting face material by using the same - Google Patents

Horizontal member and structure for mounting face material by using the same Download PDF

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JP2017122370A
JP2017122370A JP2016002831A JP2016002831A JP2017122370A JP 2017122370 A JP2017122370 A JP 2017122370A JP 2016002831 A JP2016002831 A JP 2016002831A JP 2016002831 A JP2016002831 A JP 2016002831A JP 2017122370 A JP2017122370 A JP 2017122370A
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horizontal member
steel
flange
timber
steel structure
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JP6645194B2 (en
Inventor
正人 辻井
Masato Tsujii
正人 辻井
河合　良道
Yoshimichi Kawai
良道 河合
清三郎 東
Seizaburo Azuma
清三郎 東
清水　信孝
Nobutaka Shimizu
信孝 清水
誠明 中安
Masaaki Nakayasu
誠明 中安
佐藤　圭一
Keiichi Sato
圭一 佐藤
宍戸　唯一
Tadakazu Shishido
唯一 宍戸
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Nippon Steel Corp
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Nippon Steel and Sumitomo Metal Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a horizontal member including H-shaped steel that enables rationalization of a structure when used as the horizontal member.SOLUTION: A horizontal member includes a steel structure (12) that comprises H-shaped steel, and a timber structure (15) that is made of timber mounted on the steel structure. In the steel structure, bent parts (12b) are provided at both width-direction ends of at least one (12) of two flanges provided almost in parallel and constituting the H-shaped steel, respectively. The timber structure comprises a groove (15a) for being engaged with the bent part. The bent part is inserted into the groove to be held by the steel structure.SELECTED DRAWING: Figure 3

Description

本発明は、木造建築物に用いられるＨ形鋼による梁材や根太などの横架材、及び当該横架材を用いた面材の取り付け構造に関する。   The present invention relates to a horizontal member such as a beam or joist made of H-shaped steel used for a wooden building, and a mounting structure for a face member using the horizontal member.

店舗併用住宅や老健施設への適用も睨み、従来スパン（３ｍ〜４ｍ程度）から拡大された中〜大スパン（５ｍ〜８ｍ程度、さらには８ｍ超）の２×４工法が検討されている。このようにスパンを拡大した場合、従来の木材を用いた床根太等の横架材ではたわみが過大となるため、横架材として、曲げ抵抗に優れた軽量Ｈ形鋼等の鋼部材の適用が検討されている。そして、特許文献１、２には木造住宅の横架材にＨ形鋼が用いられる形態が開示されている。   Considering application to store-use houses and health facilities, 2x4 construction methods with medium to large spans (about 5m to 8m and even more than 8m) expanded from conventional spans (about 3m to 4m) are being studied. When the span is expanded in this way, the horizontal members such as floor joists using conventional timber will have excessive deflection, so the steel member such as lightweight H-shaped steel with excellent bending resistance can be used as the horizontal member. Is being considered. Patent Documents 1 and 2 disclose a form in which H-shaped steel is used as a horizontal member of a wooden house.

特開平１０−３１７５６３号公報JP 10-317563 A 特開平８−１３６１０号公報JP-A-8-13610

上記説明したように、横架材として、曲げ抵抗に優れた軽量Ｈ形鋼等の鋼部材の適用が検討され、床根太等の横架材に軽量Ｈ形鋼を組み込んだ大スパン構造の実現に向け、鋼製の横架材と木製の周囲部材（端根太や柱）をつなぐ構造の合理化および施工の合理化を図る接合構造が求められている。これに対して特許文献１、２に記載のような発明では、十分であるとは言えず、さらなる工夫が必要とされていた。   As described above, the application of steel members such as lightweight H-section steel with excellent bending resistance as horizontal members has been studied, and the realization of a large span structure in which lightweight H-section steel is incorporated into horizontal members such as floor joists Therefore, there is a need for a joint structure that rationalizes the structure connecting steel horizontal members and wooden surrounding members (edge joists and pillars) and rationalizes construction. On the other hand, the inventions described in Patent Documents 1 and 2 are not sufficient, and further devices are required.

そこで本発明は、上記問題点に鑑み、横架材として用いたときに、構造の合理化を可能とするＨ形鋼を含む横架材を提供することを課題とする。また、この横架材を用いた面材との取付構造を提供する。   Then, this invention makes it a subject to provide the horizontal member containing the H-section steel which enables rationalization of a structure, when it uses as a horizontal member in view of the said problem. Moreover, the attachment structure with the face material using this horizontal member is provided.

以下、本発明について説明する。ここでは、わかりやすさのため図面に付した符号を括弧書きで記載するが、本発明はこれに限定されるものではない。   The present invention will be described below. Here, for easy understanding, reference numerals attached to the drawings are described in parentheses, but the present invention is not limited thereto.

請求項１に記載の発明は、建物の構造の一部を形成する横架材（１０、２０）であって、Ｈ形鋼を具備して構成される鉄骨構造体（１２）と、鉄骨構造体に取り付けられる木材による材木構造体（１５）と、を有し、鉄骨構造体は、Ｈ形鋼を構成する略平行に設けられた２つのフランジのうち少なくとも一方のフランジ（１２）の幅方向両端部に曲げ部（１２ｂ）を有し、材木構造体は、曲げ部が係合する溝（１５ａ）を具備し、曲げ部が溝に挿入されることにより鉄骨構造体に保持されている、横架材である。   The invention according to claim 1 is a horizontal member (10, 20) that forms a part of the structure of a building, and includes a steel structure (12) configured to include an H-shaped steel, and a steel structure. A timber structure (15) made of wood attached to the body, and the steel structure is a width direction of at least one flange (12) of two flanges provided substantially in parallel constituting the H-shaped steel The both ends have bent portions (12b), the timber structure has a groove (15a) with which the bent portion engages, and is held by the steel structure by inserting the bent portion into the groove. It is a horizontal member.

請求項２に記載の発明は、請求項１に記載の横架材（１０、２０）において、曲げ部（１２ｂ）は、曲げられていない部位である主部（１２ａ）に対して鋭角、又は鈍角となるように曲げられている。   The invention according to claim 2 is the horizontal member (10, 20) according to claim 1, wherein the bent portion (12b) has an acute angle with respect to the main portion (12a) which is not bent, or It is bent to have an obtuse angle.

請求項３に記載の発明は、請求項１又は２に記載の横架材（１０、２０）において、曲げ部（１２ｂ）は、鉄骨構造体の長手方向に沿って断続的に形成されている。   The invention according to claim 3 is the horizontal member (10, 20) according to claim 1 or 2, wherein the bent portion (12b) is formed intermittently along the longitudinal direction of the steel structure. .

請求項４に記載の発明は、請求項１乃至３の何れか１項に記載の横架材（１０、２０）と、横架材の曲げ部（１２ｂ）が形成されたフランジ（１２）側の面（１２ｃ）に設置された面材（２、２２）と、を備え、横架材と面材とは、材木構造体（１５）と面材とが接合されることにより固定されている、面材の取り付け構造である。   The invention according to claim 4 is the flange (12) side on which the horizontal member (10, 20) according to any one of claims 1 to 3 and a bent portion (12b) of the horizontal member are formed. The horizontal member and the face material are fixed by joining the timber structure (15) and the face material. This is a mounting structure of a face material.

本発明によれば、構造及び施工の合理化をすることができる。   According to the present invention, the structure and construction can be rationalized.

建物１の構造のうちの一部に注目して概略を示す斜視図である。1 is a perspective view schematically showing a part of a structure of a building 1 with attention paid to. 根太１０と床面材２とを説明する斜視図である。It is a perspective view explaining the joist 10 and the floor surface material 2. FIG. 面材の取り付け構造を説明する断面図である。It is sectional drawing explaining the attachment structure of a face material. 図４（ａ）は鉄骨構造体１１の斜視図、図４（ｂ）は鉄骨構造体１１の断面図である。4A is a perspective view of the steel structure 11, and FIG. 4B is a cross-sectional view of the steel structure 11. As shown in FIG. 図５（ａ）は材木構造体１５の斜視図、図５（ｂ）は材木構造体１５の断面図である。FIG. 5A is a perspective view of the timber structure 15, and FIG. 5B is a cross-sectional view of the timber structure 15. 他の例における面材の取り付け構造を説明する断面図である。It is sectional drawing explaining the attachment structure of the face material in another example. 図７（ａ）は鉄骨構造体１１’の斜視図、図７（ｂ）は鉄骨構造体１１”の斜視図である。FIG. 7A is a perspective view of the steel structure 11 ′, and FIG. 7B is a perspective view of the steel structure 11 ″. さらなる他の例における面材の取り付け構造を説明する断面図である。It is sectional drawing explaining the attachment structure of the face material in the further another example.

本発明を図面に示す形態に基づき説明する。ただし本発明はこれら形態に限定されるものではない。以下に示す図では、見易さのために繰り返しとなる符号は一部省略することがある。   The present invention will be described based on the form shown in the drawings. However, the present invention is not limited to these forms. In the drawings shown below, some repetitive symbols may be omitted for ease of viewing.

図１は１つの形態例を示す図であり、建物１のうち一階部分の床部１ａ、及び二階部分の床部１ｂに注目して抽出した斜視図であり、見易さのために一部の部材を省略して表している。   FIG. 1 is a diagram showing one form example, and is a perspective view extracted by paying attention to the floor portion 1 a of the first floor portion and the floor portion 1 b of the second floor portion of the building 1. Part members are omitted.

本形態では、図１からわかるように、床面材２は、その下面側から横架材のひとつである根太１０に保持及び固定されている。その他、建物１は、通常の木造建物がその構造上備えるべきものを有しており、これには公知の形態のものを適用することができる。なお、床部１ａ、１ｂの外周部には壁を形成するための枠材である横枠材３、及び縦枠材４が設けられている。図１ではこれら横枠材３及び縦枠材４の一部を切り欠いて表している。   In this embodiment, as can be seen from FIG. 1, the floor material 2 is held and fixed to the joists 10 that are one of the horizontal members from the lower surface side. In addition, the building 1 has what a normal wooden building should have in its structure, and the thing of a well-known form can be applied to this. In addition, the horizontal frame material 3 which is a frame material for forming a wall, and the vertical frame material 4 are provided in the outer peripheral part of floor part 1a, 1b. In FIG. 1, a part of the horizontal frame member 3 and the vertical frame member 4 is cut out.

以下、建物１のうち、根太１０（横架材１０）、ここに取り付けられる床面材２、及び根太１０を用いた面材の取り付け構造について説明する。図２は、面材の取り付け構造の一部を表した斜視図である。図２では根太１０を表すために紙面右下側の面材は省略している。図３は、当該面材の取り付け構造において、根太１０がＨ型断面を有して延びる方向に直交する方向の断面図である。図３には１つの根太１０と、ここに取り付けられた２つの床面材２と、が現れている。図１〜図３よりわかるように、面材の取り付け構造は、床面材２、横架材としての根太１０、及び固定部材１６を有して構成されている。   Hereinafter, in the building 1, the joist 10 (horizontal member 10), the floor member 2 attached thereto, and the attachment structure of the face member using the joist 10 will be described. FIG. 2 is a perspective view showing a part of the mounting structure of the face material. In FIG. 2, the face material on the lower right side of the drawing is omitted in order to represent the joist 10. FIG. 3 is a cross-sectional view in a direction orthogonal to a direction in which the joists 10 have an H-shaped cross section in the face member mounting structure. In FIG. 3, one joist 10 and two floor materials 2 attached thereto appear. As can be seen from FIGS. 1 to 3, the mounting structure of the face material includes the floor surface material 2, joists 10 as horizontal members, and a fixing member 16.

床面材２は面材のひとつであり、その中でも床面材２は床を形成するための板状の面材である。ここで床面材は特に限定されることなく、公知の床面材を適用することができる。建物を形成する際には、床面材２の上面（根太１０が配置される側とは反対側の面）に、床面を形成する化粧材等が配置される。   The floor surface material 2 is one of the surface materials, and among them, the floor surface material 2 is a plate-shaped surface material for forming a floor. Here, the floor material is not particularly limited, and a known floor material can be applied. When a building is formed, a decorative material or the like that forms the floor surface is disposed on the upper surface of the floor surface material 2 (the surface opposite to the side on which the joists 10 are disposed).

根太１０は横架材のひとつであり、面材（本形態では床面材２）を支持する棒状の部材である。本発明で根太１０は、鉄骨構造体１１及び材木構造体１５を有して構成されている。   The joist 10 is one of the horizontal members, and is a rod-like member that supports the face material (in this embodiment, the floor surface material 2). In the present invention, the joist 10 includes a steel structure 11 and a timber structure 15.

鉄骨構造体１１は、図３からわかるようにＨ形断面を有して一方向に延びる長尺部材で、いわゆるＨ形鋼をベースとしている。より詳しくは鉄骨構造体１１は、第一フランジ１２、第二フランジ１３、及びウェブ１４を有している。図４（ａ）には鉄骨構造体１１の一端側に注目した斜視図、図４（ｂ）には鉄骨構造体１１の延びる方向に直交する断面図を表した。   As can be seen from FIG. 3, the steel structure 11 is a long member having an H-shaped cross section and extending in one direction, and is based on a so-called H-shaped steel. More specifically, the steel structure 11 has a first flange 12, a second flange 13, and a web 14. 4A is a perspective view focusing on one end side of the steel structure 11, and FIG. 4B is a cross-sectional view orthogonal to the direction in which the steel structure 11 extends.

第一フランジ１２は、本形態では材木構造体１５を載せ、該材木構造体を固定するフランジである。第一フランジ１２は、図３、図４からわかるように幅方向（図３、図４（ｂ）の紙面左右方向）の両端が折り曲げられた形態であり、詳しくは主部１２ａ及び曲げ部１２ｂを有して構成されている。   The 1st flange 12 is a flange which mounts the timber structure 15 and fixes this timber structure in this form. As can be seen from FIGS. 3 and 4, the first flange 12 has a shape in which both ends in the width direction (left and right direction in FIG. 3 and FIG. 4B) are bent. It is comprised.

主部１２ａは、第一フランジ１２のうち、第二フランジ１３に対して平行に対向するように所定の間隔を有して設けられる部位である。
本形態で曲げ部１２ｂは主部１２ａの幅方向両端が曲げられて主部１２ａに対して鋭角となるように向きが変えられたように形成された部位である。曲げられる方向は第二フランジ１３とは反対側となる向きである。これにより、第一フランジ１２の強度を向上させることができる。この曲げ部１２ｂは、第二フランジ１３とは反対側に設けられ、図４（ｂ）にθで示した主部１２ａとのなす角度は０度より大きく、１８０未満である。本形態はθが鋭角の例であるが、後で例示するようにθが鈍角であってもよい。ただし、θが９０度では曲げ部１２ｂで材木構造体１５を保持することが難しいので、好ましくは０度＜θ＜９０度、又は、９０度＜θ＜１８０度である。また、より強く材木構造体１５を保持する観点から、３０度≦θ≦７５度、又は、１２０度≦θ≦１６５度の範囲内であることがより好ましい。
これにより材木構造体１５との安定した固定が可能となる。具体的な固定の態様は後で説明する。 The main portion 12a is a portion of the first flange 12 that is provided with a predetermined interval so as to face the second flange 13 in parallel.
In this embodiment, the bent portion 12b is a portion formed so that both ends in the width direction of the main portion 12a are bent and the direction is changed so as to have an acute angle with respect to the main portion 12a. The direction to be bent is the direction opposite to the second flange 13. Thereby, the strength of the first flange 12 can be improved. The bent portion 12b is provided on the side opposite to the second flange 13, and the angle formed with the main portion 12a indicated by θ in FIG. 4B is greater than 0 degree and less than 180. Although this embodiment is an example where θ is an acute angle, θ may be an obtuse angle as will be exemplified later. However, when θ is 90 degrees, it is difficult to hold the timber structure 15 with the bent portion 12b, and therefore preferably 0 degrees <θ <90 degrees or 90 degrees <θ <180 degrees. Further, from the viewpoint of holding the timber structure 15 more strongly, it is more preferable that the angle is within a range of 30 degrees ≦ θ ≦ 75 degrees or 120 degrees ≦ θ ≦ 165 degrees.
Thereby, the stable fixation with the timber structure 15 is attained. A specific fixing mode will be described later.

主部１２ａ及び曲げ部１２ｂの厚さは具体的な値は限定されることはないが、１．６ｍｍ以上６．０ｍｍ以下であることがより好ましい。   Although the specific values of the thickness of the main part 12a and the bent part 12b are not limited, it is more preferably 1.6 mm or more and 6.0 mm or less.

また、第一フランジ１２の幅Ｗ１２は１００ｍｍ以上２００ｍｍ以下であることが好ましい。これによれば、第一フランジ１２と木材構造体１５との重なり部分を大きくとることができ、これによっても第一フランジ１２と木材構造体１５との固定がしやすくなる。 Further, it is preferable that the width W 12 of the first flange 12 is 100mm or more 200mm or less. According to this, the overlapping part of the 1st flange 12 and the timber structure 15 can be taken large, and it becomes easy to fix the 1st flange 12 and the timber structure 15 also by this.

第二フランジ１３は、本形態では第一フランジ１２の主部１２ａに対して一方の面同士が対向するように所定の間隔を有して平行に配置されるフランジである。本形態で第二フランジは１３、通常の板状の部材で、公知のフランジであればよい。好ましくは、第二フランジ１３の図４（ｂ）に表れた断面の断面積が、第一フランジ１２の当該断面の断面積と略同じであることが好ましい。これにより鉄骨構造体１１の重心を該鉄骨構造体１１の概ね中央にすることができ、床構造を含めた建物の設計が簡易になる。   The 2nd flange 13 is a flange arrange | positioned in parallel with predetermined spacing so that one surface may oppose the main part 12a of the 1st flange 12 with this form. In this embodiment, the second flange 13 is a normal plate-shaped member, and may be a known flange. Preferably, the cross-sectional area of the cross section of the second flange 13 shown in FIG. 4B is substantially the same as the cross-sectional area of the cross section of the first flange 12. As a result, the center of gravity of the steel structure 11 can be set substantially at the center of the steel structure 11, and the design of the building including the floor structure can be simplified.

第二フランジ１３の具体的な寸法は特に限定されることはないが、第二フランジ１３の厚さは４．５ｍｍ以上１５ｍｍ以下であることが好ましい。これにより曲げ抵抗を十分に確保することができる。
また、幅Ｗ１３は８０ｍｍ以上１００ｍｍ以下であることが好ましい。 Although the specific dimension of the 2nd flange 13 is not specifically limited, It is preferable that the thickness of the 2nd flange 13 is 4.5 mm or more and 15 mm or less. Thereby, a sufficient bending resistance can be ensured.
Further, it is preferable that the width W 13 is 80mm or more than 100mm.

ウェブ１４は、図４（ｂ）に表した断面においてその一端が第一フランジ１２、他端が第二フランジ１３に接合された板状部材である。これにより第一フランジ１２と第二フランジ１３とが一体化される。接合のための手段は特に限定されることなく公知の接合技術を用いることができる。これには例えば溶接等を挙げることが可能である。
ここではウェブ１４は、図４（ｂ）に示した断面において鉄骨構造体１１がウェブ１４を挟んで左右対称となるように配置されることが好ましい。これによれば図４（ｂ）に示した鉄骨構造体１１の断面における重心がウェブ１４の内側となる。そしてその重心位置は、図４（ｂ）における断面において、鉄骨構造体１１の厚さ方向で中央に近い位置であることが好ましい。これにより、荷重に対して座屈を生じ難くなる。 The web 14 is a plate-like member whose one end is joined to the first flange 12 and the other end is joined to the second flange 13 in the cross section shown in FIG. As a result, the first flange 12 and the second flange 13 are integrated. A means for joining is not particularly limited, and a known joining technique can be used. This can include, for example, welding.
Here, the web 14 is preferably arranged so that the steel structure 11 is symmetrical with respect to the web 14 in the cross section shown in FIG. According to this, the center of gravity in the cross section of the steel structure 11 shown in FIG. And it is preferable that the gravity center position is a position close | similar to the center in the thickness direction of the steel structure 11 in the cross section in FIG.4 (b). Thereby, it becomes difficult to produce buckling with respect to a load.

ウェブ１４により維持される第一フランジ１２の主部１２ａと第二フランジ１３との距離Ｄは特に限定されることはないが、１００ｍｍ以上４５０ｍｍ以下の範囲内であることが好ましい。   The distance D between the main portion 12a of the first flange 12 and the second flange 13 maintained by the web 14 is not particularly limited, but is preferably in the range of 100 mm to 450 mm.

ここで鉄骨構造体１１は鋼材により形成されている。鋼材の具体的な種類は特に限定されることはないが、建物の構造物用の材料を用いることが好ましい。   Here, the steel structure 11 is formed of a steel material. Although the specific kind of steel material is not specifically limited, It is preferable to use the material for the structure of a building.

材木構造体１５は、材木により形成された棒状の長尺部材である。図５（ａ）に材木構造体１５の一端側近傍を表した斜視図、図５（ｂ）に材木構造体１５の長手方向に直交する断面を示した。   The timber structure 15 is a rod-like long member made of timber. FIG. 5A is a perspective view showing the vicinity of one end side of the timber structure 15, and FIG. 5B shows a cross section orthogonal to the longitudinal direction of the timber structure 15.

本形態で材木構造体１５は、図５（ｂ）からわかるように断面が四角形であり、その一方の面側には長手方向に延びる溝１５ａを備えている。この溝１５ａは上記した鉄骨構造体１１の第一フランジ１２に具備される曲げ部１２ｂが挿入される形態とされている。   In this embodiment, the timber structure 15 has a quadrangular cross section as can be seen from FIG. 5B, and includes a groove 15a extending in the longitudinal direction on one surface side thereof. The groove 15a is configured such that a bent portion 12b provided in the first flange 12 of the steel structure 11 is inserted.

鉄骨構造体１１と材木構造体１５とは、図３に示したように組み合わされて根太１０とされている。すなわち、材木構造体１５が鉄骨構造体１１の第一フランジ１２のうち、ウェブ１４とは反対側に載せられる。このとき材木構造体１５の溝１５ａの内側に第一フランジ１２の曲げ部１２ｂが挿入される。これにより鉄骨構造体１１と材木構造体１５とが連結される。
従って、鉄骨構造体１１と材木構造体１５との連結のために必ずしも別途固定部材を必要としないので、構造及び施工の簡略化が可能となり、構造及び施工の合理化をすることができる。 The steel structure 11 and the timber structure 15 are combined into a joist 10 as shown in FIG. That is, the timber structure 15 is placed on the opposite side of the first flange 12 of the steel structure 11 from the web 14. At this time, the bent portion 12 b of the first flange 12 is inserted inside the groove 15 a of the timber structure 15. Thereby, the steel structure 11 and the timber structure 15 are connected.
Therefore, since a separate fixing member is not necessarily required for connecting the steel structure 11 and the timber structure 15, the structure and construction can be simplified, and the structure and construction can be rationalized.

以上のような、根太１０が図１に示したように水平に複数並べられる。このとき、材木構造体１５が床面材２側となるように配置される。そして複数の根太１０の第一フランジ１２側の面１２ｃ（曲げ部１２ｂが形成された側の面１２ｃ）を渡すように床面材２が設置され、図３に示したように、床面材２と材木構造体１５とが重なった部位に対して、両者を厚さ方向に貫通するように固定部材１５を配置する。固定部材としては釘やドリルねじ等を用いることが好ましい。
以上のようにして、根太１０と床面材２とによる横架材を用いた面材の取り付け構造が形成される。 A plurality of joists 10 as described above are arranged horizontally as shown in FIG. At this time, the timber structure 15 is disposed on the floor surface material 2 side. And the floor material 2 is installed so that the surface 12c (surface 12c of the side in which the bending part 12b was formed) of the 1st flange 12 side of several joists 10 is passed, and as shown in FIG. The fixing member 15 is disposed so as to penetrate the two and the timber structure 15 in the thickness direction. It is preferable to use a nail or a drill screw as the fixing member.
As described above, the mounting structure of the face material using the horizontal member made of the joists 10 and the floor surface material 2 is formed.

この構造によれば、横架材にＨ形鋼を含んでいるので、木材に対して高い耐久性を確保することができる。また、横架材において、Ｈ形鋼（鉄骨構造体）と材木構造体とを、簡易に固定することができ、構造及び施工の合理化が図られる。   According to this structure, since the H-shaped steel is included in the horizontal member, it is possible to ensure high durability against the wood. Further, in the horizontal member, the H-shaped steel (steel structure) and the timber structure can be easily fixed, and the structure and construction can be rationalized.

なお、第一フランジ１２と第二フランジ１３との形状をその目的に応じて異なるものとしつつも、両者の断面積を略同じとすれば、中立軸が横架材の中心を概ね維持し、曲げ剛性及び耐力を最大に保つことができる。これにより断面形状によらず、強度設計などの変更をする必要がなく、さらに設計の容易が図られる。   In addition, while making the shape of the first flange 12 and the second flange 13 different depending on the purpose, if the cross-sectional areas of both are substantially the same, the neutral shaft generally maintains the center of the horizontal member, Flexural rigidity and proof stress can be kept to a maximum. Accordingly, it is not necessary to change the strength design or the like regardless of the cross-sectional shape, and the design can be facilitated.

図６には、第一フランジ１２の主部１２ａに対して曲げ部１２ｂが鈍角を有して方向が変えられている例を示している。図６は図３と同じ視点による図である。すなわち、θが９０度＜θ＜１８０度の例である。上記したようにこの例において、より好ましくは１２０度≦θ≦１６５度である。
かかる例でも上記と同様の効果を奏する。 FIG. 6 shows an example in which the bent portion 12b has an obtuse angle with respect to the main portion 12a of the first flange 12 and the direction is changed. FIG. 6 is a view from the same viewpoint as FIG. That is, in this example, θ is 90 degrees <θ <180 degrees. As described above, in this example, 120 degrees ≦ θ ≦ 165 degrees is more preferable.
In such an example, the same effect as described above can be obtained.

図７（ａ）、図７（ｂ）には変形例にかかる根太のうち、当該変形例に具備される鉄骨構造体１１’、及び鉄骨構造体１１”の端部近傍の斜視図を表した。図７（ａ）が鉄骨構造体１１’、図７（ｂ）が鉄骨構造体１１”である。
ここまで説明した鉄骨構造体１１は、第一フランジ１１の曲げ部１１ｂが、鉄骨構造体１１の長手方向に亘って一様に形成されていたが、鉄骨構造体１１’、鉄骨構造体１１”は図７からわかるように、鉄骨構造体１１の長手方向に沿って断続的に曲げ部１２ｂが設けられている。図７（ａ）は幅方向左右の曲げ部１２ｂが同じように曲げ部１２ｂが形成されている。一方、図７（ｂ）は左右の曲げ部１２ｂが互い違いに形成されている。
このような鉄骨構造体１１でも上記のような効果を奏するものとなる。 7A and 7B show perspective views of the steel structure 11 ′ and the vicinity of the ends of the steel structure 11 ″ included in the modification of the joists according to the modification. 7A shows a steel structure 11 ′, and FIG. 7B shows a steel structure 11 ″.
In the steel structure 11 described so far, the bent portion 11b of the first flange 11 is uniformly formed in the longitudinal direction of the steel structure 11. However, the steel structure 11 'and the steel structure 11 " 7, the bending part 12b is intermittently provided along the longitudinal direction of the steel structure 11. In FIG.7 (a), the bending part 12b is the same as the bending part 12b of the width direction right and left. On the other hand, the left and right bent portions 12b are alternately formed in FIG.
Such a steel structure 11 also has the above effects.

図８は、他の形態を説明する図であり、図３と同じ視点による図である。本形態では横架材として根太２０が用いられている。そして根太２０により下階の天井面材２２と上階の床面材２が連結された構造である。
図８からわかるように、根太２０では、２つ設けられたフランジの両方が、上記した第一フランジ１２と同じ形態を有している。このとき曲げ部１２ｂは互いに向かい合う側に形成されている。
かかる形態によれば、本形態のようにその両面側に面材を配置することができ、これらを強固に連結することが可能となる。 FIG. 8 is a diagram illustrating another embodiment, and is a diagram from the same viewpoint as FIG. In this embodiment, joists 20 are used as the horizontal member. Then, the lower floor ceiling material 22 and the upper floor material 2 are connected by the joist 20.
As can be seen from FIG. 8, in the joist 20, both of the two flanges have the same form as the first flange 12 described above. At this time, the bent portions 12b are formed on the sides facing each other.
According to this mode, face materials can be arranged on both sides as in this mode, and these can be firmly connected.

１ 建物
２ 床面材（面材）
１０ 根太
１１ 鉄骨構造体
１２ 第一フランジ
１３ 第二フランジ
１４ ウェブ
１５ 材木構造体
１６ 固定部材
２０ 根太 1 Building 2 Floor material (Face material)
10 joist 11 steel structure 12 first flange 13 second flange 14 web 15 timber structure 16 fixing member 20 joist

Claims (4)

建物の構造の一部を形成する横架材であって、
Ｈ形鋼を具備して構成される鉄骨構造体と、前記鉄骨構造体に取り付けられる材木による材木構造体と、を有し、
前記鉄骨構造体は、前記Ｈ形鋼を構成する略平行に設けられた２つのフランジのうち少なくとも一方のフランジの幅方向両端部に曲げ部を有し、
前記材木構造体は、前記曲げ部が係合する溝を具備し、前記曲げ部が前記溝に挿入されることにより前記鉄骨構造体に保持されている、横架材。 A horizontal member that forms part of the structure of the building,
A steel structure comprising an H-shaped steel, and a timber structure made of timber attached to the steel structure,
The steel structure has a bent portion at both ends in the width direction of at least one of the two flanges provided substantially in parallel to constitute the H-shaped steel,
The said timber structure is provided with the groove | channel which the said bending part engages, The horizontal member is hold | maintained at the said steel structure by inserting the said bending part into the said groove | channel. 前記曲げ部は、前記曲げられていない部位である主部に対して鋭角、又は鈍角となるように曲げられている請求項１に記載の横架材。   The horizontal member according to claim 1, wherein the bent portion is bent so as to have an acute angle or an obtuse angle with respect to the main portion which is the unbent portion. 前記曲げ部は、前記鉄骨構造体の長手方向に沿って断続的に形成されている請求項１又は２に記載の横架材。   The horizontal member according to claim 1 or 2, wherein the bent portion is formed intermittently along a longitudinal direction of the steel structure. 請求項１乃至３のいずれか１項に記載の横架材と、
前記横架材の前記曲げ部が形成されたフランジ側の面に設置された面材と、を備え、
前記横架材と前記面材とは、前記材木構造体と前記面材とが接合されることにより固定されている、面材の取り付け構造。 The horizontal member according to any one of claims 1 to 3,
A face material installed on the flange-side surface on which the bent portion of the horizontal member is formed, and
The horizontal member and the face material are face material attachment structures in which the timber structure and the face material are fixed to each other.
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