WO2021245737A1 - Framework structure for wellhole opening portion - Google Patents

Framework structure for wellhole opening portion Download PDF

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Publication number
WO2021245737A1
WO2021245737A1 PCT/JP2020/021587 JP2020021587W WO2021245737A1 WO 2021245737 A1 WO2021245737 A1 WO 2021245737A1 JP 2020021587 W JP2020021587 W JP 2020021587W WO 2021245737 A1 WO2021245737 A1 WO 2021245737A1
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Prior art keywords
opening
column
wind
resistant
atrium
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PCT/JP2020/021587
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French (fr)
Japanese (ja)
Inventor
哲文 堤
治 田畑
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積水ハウス株式会社
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Application filed by 積水ハウス株式会社 filed Critical 積水ハウス株式会社
Priority to PCT/JP2020/021587 priority Critical patent/WO2021245737A1/en
Priority to US17/623,266 priority patent/US20230091125A1/en
Priority to GB2200228.1A priority patent/GB2608479A/en
Priority to AU2020451351A priority patent/AU2020451351A1/en
Publication of WO2021245737A1 publication Critical patent/WO2021245737A1/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B1/2612—Joist hangers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B1/2608—Connectors made from folded sheet metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/88—Curtain walls
    • E04B2/96—Curtain walls comprising panels attached to the structure through mullions or transoms
    • E04B2/965—Connections of mullions and transoms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2644—Brackets, gussets or joining plates
    • E04B2001/2648—Brackets, gussets or joining plates located in slots of the elongated wooden members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/268—Connection to foundations
    • E04B2001/2684—Connection to foundations with metal connectors

Definitions

  • the present invention relates to a framework structure in which a tall opening is provided in the outer wall facing the atrium space of a wooden building.
  • a windproof beam 92 is erected at an intermediate height of the window 91, and the pillar members 93 on both sides of the window are connected.
  • the windproof beam 92 has a vertically long rectangular cross section.
  • Patent Document 1 although it is not an opening facing the atrium space, the cross-sectional shape of the pillars on both sides of the opening is used as a frontage as a structure in which a large opening such as a carport is provided in the wooden frame frame. It is stated that the rectangle is long in the direction.
  • the wind-resistant beam used for the reinforcement structure of the above [A] is erected so that the weak axis direction (short side direction) in the rectangular cross section matches the direction of the wind pressure acting on the window, so that the strength against the wind pressure is satisfactory. It is difficult to obtain a large opening area of the window. Further, since the window straddling the upper and lower floors is divided at the intermediate portion by the windproof beam having a height, the continuity in the vertical direction is impaired, which is not preferable in terms of design.
  • the through column used for the reinforcement structure of the above [B] has a small cross-sectional area compared to the length, the strength against wind pressure is weak and buckling is likely to occur.
  • the reinforcing column used in the reinforcing structure of the above [C] also has a small member cross section with respect to the wind pressure direction, so that sufficient strength cannot be obtained. Further, since the two-by-four lumber is a lumber, if the lumber length is long, there is a high possibility that warpage or twisting will occur. Further, even if the member is to be used as a representative finish, the texture and design of the member itself are inferior, and it is difficult to produce a sense of quality.
  • Patent Document 1 The structure described in Patent Document 1 is effective for a vertical load and a horizontal load in the frontage direction, but it cannot be expected to have an effective resistance force against a wind pressure acting in a direction orthogonal to the opening surface.
  • the present invention has been made in view of the above problems, and when an opening such as a tall window is provided facing the atrium space, a high resistance to a large wind pressure acting on the opening is provided. It provides a framework structure that is effective and has an excellent opening feeling and design.
  • the framework structure of the atrium opening of the present invention has an opening provided on the outer wall facing the atrium space over a height of two or more layers, and the major axis dimension of the cross section is the minor axis dimension.
  • a wind-resistant column made of laminated wood formed so as to be at least twice as large is erected so as to be continuous on the upper and lower floors with its major axis direction orthogonal to the opening surface, and the wind-resistant column acts on the opening surface. It is characterized by resisting wind pressure.
  • the wind-resistant column in the present invention is a continuous through column over a height of two or more layers, and is erected in a direction orthogonal to the opening surface in the rectangular cross section, that is, in a direction in which wind pressure acts. Therefore, the wind-resistant column is used as a strong shaft against wind pressure, and high strength can be obtained. This makes it possible to provide a large and open opening.
  • this windproof column is formed by processing laminated lumber, its strength is more uniform than that of conventional general lumber, and it is less likely to warp or twist. Further, even when the windproof beam is exposed toward the indoor side or the outdoor side, a beautiful and good texture can be obtained.
  • Glulam whose cross-section has a major axis direction more than twice the minor axis direction is a material mainly used as a beam material in the so-called laminated lumber method, so its factory processing also uses a conventional processing line. It can be done efficiently and economically.
  • structural laminated lumber There are two types of laminated lumber, structural laminated lumber and structural laminated lumber, but structural laminated lumber is used for the framework structure of the present invention.
  • the standard for structural laminated wood is established as "JAS for structural laminated wood” in Notification No. 111 of the Ministry of Agriculture, Forestry and Fisheries in 1996. According to this standard, the short side of the cross section is 15 cm or more and the cross section is 300 square cm or more is "large cross-section laminated wood", the short side of the cross section is 7.5 cm or more, and the long side is 15 cm or more.
  • Those other than the cross-section laminated wood are defined as "medium cross-section laminated wood", and those having a short side of less than 7.5 cm or a long side of less than 15 cm are defined as "small cross-section laminated wood”.
  • Structural laminated wood having a medium cross section or more can be suitably used as a pillar.
  • the wind-resistant columns are erected in the opening surface including both sides of the opening, depending on the dimensions of the opening.
  • the wind-resistant columns may be connected by a horizontal column connecting member at an appropriate intermediate position in the height direction. It is preferable that the column connecting material is erected with a vertically long rectangular cross section, but the cross-sectional dimension thereof can be much smaller than that of a windproof column. Since the position of the column connecting material is not affected by the position of other beam materials and can be set independently, the degree of freedom in the design of the opening is not limited.
  • the column base of the wind-resistant column is directly fixed to the foundation via an appropriate column base metal fitting, and the stigma of the wind-resistant column is an eaves girder or a similar frame frame via an appropriate beam beam metal fitting. It is preferably fixed directly to the uppermost beam material. As a result, the horizontal load due to the wind pressure can be directly transmitted to the foundation and the uppermost part of the skeleton, so that the skeleton structure has a sense of stability.
  • the windproof columns continuous over the heights of two or more layers stand in the strong axis direction in the rectangular cross section toward the action direction of the wind pressure. Since it is installed, a high resistance to wind pressure can be obtained as compared with the conventional general framework structure and two-bar four structure. As a result, the height and width of the opening can be increased, and a dynamic and open atrium space and a window surface can be designed.
  • the depth (estimated dimension) of the windproof column is larger than that of other framework parts, it is possible to accommodate window-related equipment such as blinds and panel radiators within this depth dimension.
  • FIG. 1 is a schematic external elevation of the wooden building according to the embodiment of the present invention
  • FIG. 2 is a partially exploded perspective view of the framework structure of the atrium opening of the building as viewed from the indoor side.
  • This building 1 is a double-decker building, and a two-story atrium space is provided indoors, and a vertically long opening 2 for two levels is provided on the outer wall facing the atrium space.
  • reference numeral 3 is a windproof column constituting a main part of the present invention
  • reference numeral 4 is a reinforced concrete foundation
  • reference numeral 5 is an eaves girder arranged at the top of a frame frame
  • reference numeral 6 is a frame of an outer wall. It is a constituent body difference.
  • a total of four windproof columns 3 are arranged at both sides of the opening 2 and in this example, at an intermediate position that substantially divides the opening 2 into three equal parts in the width direction.
  • the windproof column 3 is made of laminated lumber having a rectangular cross section of, for example, a major axis of 360 mm and a minor axis of 120 mm, and is erected with the major axis direction of the cross section orthogonal to the opening surface.
  • the cross-sectional dimensions of the windproof column 3 are not limited to examples, but those having a major axis dimension of approximately twice or more, preferably 2.5 to 3.5 times the minor axis dimension are also preferable in terms of strength.
  • the windproof pillar 3 is continuous with one material over two layers.
  • the column base of the windproof column 3 is fixed to the reinforced concrete foundation 4 via an appropriate column base metal fitting 7, and the stigma wins against the eaves girder 5 in this example via an appropriate column beam metal fitting 8. It is joined so as to be.
  • Reference numeral 9 is a column connecting material that connects the windproof columns 3 in the horizontal direction.
  • the column connecting member 9 is a member having a cross-sectional dimension smaller than that of the wind-resistant column 3, and in this example, a laminated wood having a cross-section similar to that of the body difference 6 or a cross section smaller than that of the body difference 6 is used.
  • the column connecting member 9 is joined to the side surface of the windproof column 3 via an appropriate column-beam hardware 10.
  • the mounting height of the column connecting member 9 is not affected by the height of the floor structure or the like provided between the upper and lower floors, and an appropriate intermediate position in the height direction of the windproof column 3 can be set.
  • the opening 2 configured in this way exhibits a high resistance to the wind pressure acting on the opening surface. Thereby, it is possible to design the opening 2 which is large and has a rich feeling of liberation. If the cross-sectional dimensions of the windproof columns 3 and the arrangement intervals are appropriately set, the height of the openings 2 can be set to three or more layers.
  • the window sashes attached to the opening 2 are not shown, they can be installed on the outdoor side, the indoor side, and within the depth dimension of the windproof column 3.
  • the windproof pillar 3 made of laminated lumber is advantageous in this respect because it can be used for both interior and exterior, but the surface of the windproof pillar 3 exposed on the indoor side or the outdoor side may be covered with an appropriate finishing material. Of course it is possible.

Abstract

In an opening portion (2) provided over the total height of two or more floors to an external wall facing a wellhole space, wind resistant pillars (3) each of which is made from a laminated material and is formed so as to have a cross section in which the dimension of a longer side is at least twice the dimension of a shorter side, are provided so as to continuously stand over upper and lower floors such that the direction of the longer side of each wind resistant pillar (3) is orthogonal to an opening plane. The wind resistant pillars (3) each exert a high resistance force to wind pressure applied to the opening portion, thus a framework structure that has excellent design and that provides an excellent sense of openness of the opening portion is obtained.

Description

吹抜け開口部の軸組構造Framework structure of the atrium opening
　本発明は、木造建物の吹抜け空間に面して外壁に背の高い開口部を設ける場合の軸組構造に関する。 The present invention relates to a framework structure in which a tall opening is provided in the outer wall facing the atrium space of a wooden building.
　木質軸組構造、またはこれに準じた木構造の建物において、内部に吹抜け空間を設け、その吹抜け空間に面した外壁に、上下階にわたる背の高い窓を設ける場合、窓に作用する大きい風圧への抵抗手段が必要となる。かかる手段として、従来は以下のような補強構造が採用されている。 In a building with a wooden frame structure or a similar wooden structure, if a stairwell space is provided inside and a tall window over the upper and lower floors is provided on the outer wall facing the stairwell space, the large wind pressure acting on the window will be applied. Resistance means are required. Conventionally, the following reinforcing structures have been adopted as such means.
　［Ａ］図３に示すように、窓９１の中間の高さに耐風梁９２を架設して、窓の両側部の柱材９３を連結する。この耐風梁９２は、縦長の矩形断面を有する。 [A] As shown in FIG. 3, a windproof beam 92 is erected at an intermediate height of the window 91, and the pillar members 93 on both sides of the window are connected. The windproof beam 92 has a vertically long rectangular cross section.
　［Ｂ］窓の屋内側に、上下階を連続する複数本の通し柱を立設する。これらの通し柱には、１０５ｍｍ角ないし120ｍｍ角の角材が利用される。 [B] On the indoor side of the window, install multiple continuous pillars on the upper and lower floors. For these through columns, 105 mm square to 120 mm square lumber is used.
　［Ｃ］ツーバイフォー工法においては、壁フレーム材として使用される２０４材（３８ｍｍ×８９ｍｍ）や２０６材（３８ｍｍ×１４０ｍｍ）を、３本ないし４本束ねて釘で結合し、これを補強柱として立設する。 [C] In the two-by-four method, 204 materials (38 mm x 89 mm) and 206 materials (38 mm x 140 mm) used as wall frame materials are bundled together with 3 or 4 pieces and joined with nails, and this is used as a reinforcing column. Set up.
　また、特許文献１には、吹抜け空間に面する開口部ではないが、木造軸組躯体にカーポートのような大開口を設ける場合の構造として、該開口の両側の柱材の断面形状を間口方向に長い矩形とすることが記載されている。 Further, in Patent Document 1, although it is not an opening facing the atrium space, the cross-sectional shape of the pillars on both sides of the opening is used as a frontage as a structure in which a large opening such as a carport is provided in the wooden frame frame. It is stated that the rectangle is long in the direction.
登録実用新案第３０７２５９５号公報Registered Utility Model No. 3072595
　上記［Ａ］の補強構造に用いられる耐風梁は、その矩形断面における弱軸方向（短辺方向）が窓に作用する風圧の方向と合致するように架設されるので、風圧に対する強度が満足に得られず、窓の開口面積を大きくとりにくい。また、上下階にまたがる窓が、高さのある耐風梁によって中間部分で分断されてしまうので、上下方向の連続性が損なわれ、意匠的に好ましくない。 The wind-resistant beam used for the reinforcement structure of the above [A] is erected so that the weak axis direction (short side direction) in the rectangular cross section matches the direction of the wind pressure acting on the window, so that the strength against the wind pressure is satisfactory. It is difficult to obtain a large opening area of the window. Further, since the window straddling the upper and lower floors is divided at the intermediate portion by the windproof beam having a height, the continuity in the vertical direction is impaired, which is not preferable in terms of design.
　上記［Ｂ］の補強構造に用いられる通し柱は、長さに比して断面積が小さいので、風圧に対する強度が弱く、座屈を招きやすい。所定の強度を確保するには、通し柱の断面積を大きくし、その本数を増やす必要があるので、窓の解放感や採光性が損なわれることになる。 Since the through column used for the reinforcement structure of the above [B] has a small cross-sectional area compared to the length, the strength against wind pressure is weak and buckling is likely to occur. In order to secure a predetermined strength, it is necessary to increase the cross-sectional area of the through columns and increase the number of the through columns, so that the open feeling of the windows and the daylighting property are impaired.
　上記［Ｃ］の補強構造に用いられる補強柱も、風圧方向に対する部材断面が小さいので、満足すべき強度が得られない。また、ツーバイフォー材は製材であるから、材長が長い場合は反りやねじれが生じる可能性も高い。さらに、部材をあらわし仕上げとして利用したくとも、部材自体の質感や意匠性に劣り、高級感を演出しにくい。 The reinforcing column used in the reinforcing structure of the above [C] also has a small member cross section with respect to the wind pressure direction, so that sufficient strength cannot be obtained. Further, since the two-by-four lumber is a lumber, if the lumber length is long, there is a high possibility that warpage or twisting will occur. Further, even if the member is to be used as a representative finish, the texture and design of the member itself are inferior, and it is difficult to produce a sense of quality.
　上記特許文献１記載の構造は、鉛直荷重や間口方向の水平荷重には有効であるが、開口面に直交する方向に作用する風圧に対しては有効な抵抗力を期待できない。 The structure described in Patent Document 1 is effective for a vertical load and a horizontal load in the frontage direction, but it cannot be expected to have an effective resistance force against a wind pressure acting in a direction orthogonal to the opening surface.
　本発明は上記のような問題に鑑みてなされたもので、吹抜け空間に面して背の高い窓のような開口部を設けるに際し、該開口部に作用する大きい風圧に対して高い抵抗力を発揮し、かつ開口部の解放感や意匠性にも優れる軸組構造を提供するものである。 The present invention has been made in view of the above problems, and when an opening such as a tall window is provided facing the atrium space, a high resistance to a large wind pressure acting on the opening is provided. It provides a framework structure that is effective and has an excellent opening feeling and design.
　上記した目的を達成するため、本発明の吹抜け開口部の軸組構造は、吹抜け空間に面した外壁に２階層以上の高さにわたって設けられる開口部に、断面の長軸寸法が短軸寸法の少なくとも２倍以上となるように形成された集成材からなる耐風柱を、その長軸方向を開口面と直交させて上下階に連続するように立設し、この耐風柱によって開口面に作用する風圧に抵抗することを特徴とする。 In order to achieve the above object, the framework structure of the atrium opening of the present invention has an opening provided on the outer wall facing the atrium space over a height of two or more layers, and the major axis dimension of the cross section is the minor axis dimension. A wind-resistant column made of laminated wood formed so as to be at least twice as large is erected so as to be continuous on the upper and lower floors with its major axis direction orthogonal to the opening surface, and the wind-resistant column acts on the opening surface. It is characterized by resisting wind pressure.
　この発明における耐風柱は、２階層以上の高さにわたって連続する通し柱であり、その矩形断面における長軸方向を開口面と直交する方向、つまり風圧の作用方向に向けて立設される。したがって、耐風柱が風圧に対して強軸使いとなり、高い強度が得られる。これにより、大きくて解放感のある開口部を設けることができる。 The wind-resistant column in the present invention is a continuous through column over a height of two or more layers, and is erected in a direction orthogonal to the opening surface in the rectangular cross section, that is, in a direction in which wind pressure acts. Therefore, the wind-resistant column is used as a strong shaft against wind pressure, and high strength can be obtained. This makes it possible to provide a large and open opening.
　さらに、この耐風柱は集成材を加工して形成されるので、従来一般の製材に比べて強度が均質であり、反りやねじれも生じにくい。また、耐風梁を屋内側または屋外側に向けてあらわし仕上げとする場合でも、美麗で良好な質感が得られる。断面の長軸方向が短軸方向の２倍以上となる集成材は、いわゆる集成材工法において、主に梁材として利用される材料であるから、その工場加工も従来の加工ラインを利用して効率的かつ経済的に行うことができる。 Furthermore, since this windproof column is formed by processing laminated lumber, its strength is more uniform than that of conventional general lumber, and it is less likely to warp or twist. Further, even when the windproof beam is exposed toward the indoor side or the outdoor side, a beautiful and good texture can be obtained. Glulam whose cross-section has a major axis direction more than twice the minor axis direction is a material mainly used as a beam material in the so-called laminated lumber method, so its factory processing also uses a conventional processing line. It can be done efficiently and economically.
　なお、集成材には構造用集成材と造作用集成材とがあるが、本発明の軸組構造に用いられるのは構造用集成材である。構造用集成材の規格については、平成８年農林水産省告示第１１１号に「構造用集成材のＪＡＳ」として制定されている。この規格では、断面の短辺が１５ｃｍ以上、かつ断面積が３００平方ｃｍ以上のものが「大断面集成材」、断面の短辺が７．５ｃｍ以上、長辺が１５ｃｍ以上であって、大断面集成材以外のものが「中断面集成材」、断面の短辺が７．５ｃｍ未満または長辺が１５ｃｍ未満のものが「小断面集成材」と定められているが、本発明に係る耐風柱として好適に利用しうるのは中断面以上の構造用集成材である。 There are two types of laminated lumber, structural laminated lumber and structural laminated lumber, but structural laminated lumber is used for the framework structure of the present invention. The standard for structural laminated wood is established as "JAS for structural laminated wood" in Notification No. 111 of the Ministry of Agriculture, Forestry and Fisheries in 1996. According to this standard, the short side of the cross section is 15 cm or more and the cross section is 300 square cm or more is "large cross-section laminated wood", the short side of the cross section is 7.5 cm or more, and the long side is 15 cm or more. Those other than the cross-section laminated wood are defined as "medium cross-section laminated wood", and those having a short side of less than 7.5 cm or a long side of less than 15 cm are defined as "small cross-section laminated wood". Structural laminated wood having a medium cross section or more can be suitably used as a pillar.
　耐風柱は、開口部の寸法に応じ、開口部の両側部を含めて開口面内に複数本立設される。耐風柱の本数が多い場合、それらの耐風柱は、高さ方向の適宜中間位置で、水平方向の柱つなぎ材により連結されてもよい。柱つなぎ材は、矩形断面を縦長にして架設されるのが好ましいが、その断面寸法は耐風柱よりもはるかに小さくて済む。柱つなぎ材の位置は、他の梁材等の位置に影響されず、独自に設定することができるので、開口部のデザインにおける自由度も制限されにくい。 Multiple windproof columns are erected in the opening surface including both sides of the opening, depending on the dimensions of the opening. When the number of wind-resistant columns is large, the wind-resistant columns may be connected by a horizontal column connecting member at an appropriate intermediate position in the height direction. It is preferable that the column connecting material is erected with a vertically long rectangular cross section, but the cross-sectional dimension thereof can be much smaller than that of a windproof column. Since the position of the column connecting material is not affected by the position of other beam materials and can be set independently, the degree of freedom in the design of the opening is not limited.
　耐風柱の柱脚は、適宜の柱脚金物を介して、基礎に直接、固定され、また、耐風柱の柱頭は、適宜の柱梁金物を介して、軒桁、またはこれに準ずる躯体軸組最上部の梁材に直接、固定されるのが好ましい。これにより、風圧による水平荷重を基礎及び躯体最上部に直接、伝達することができるので、安定感のある躯体構造となる。 The column base of the wind-resistant column is directly fixed to the foundation via an appropriate column base metal fitting, and the stigma of the wind-resistant column is an eaves girder or a similar frame frame via an appropriate beam beam metal fitting. It is preferably fixed directly to the uppermost beam material. As a result, the horizontal load due to the wind pressure can be directly transmitted to the foundation and the uppermost part of the skeleton, so that the skeleton structure has a sense of stability.
　上述のように構成される本発明の吹抜け開口部の軸組構造によれば、２階層以上の高さにわたって連続する耐風柱が、その矩形断面における強軸方向を風圧の作用方向に向けて立設されるので、従来一般の軸組構造やツーバーフォー構造に比べて、風圧に対する高い抵抗力が得られる。これにより、開口部の高さ及び幅を大きくすることができ、ダイナミックで解放感に富む吹抜け空間や窓面を設計することができる。 According to the framework structure of the atrium opening of the present invention configured as described above, the windproof columns continuous over the heights of two or more layers stand in the strong axis direction in the rectangular cross section toward the action direction of the wind pressure. Since it is installed, a high resistance to wind pressure can be obtained as compared with the conventional general framework structure and two-bar four structure. As a result, the height and width of the opening can be increased, and a dynamic and open atrium space and a window surface can be designed.
　また、集成材からなる耐風柱を利用するので、製材に比べて強度や寸法安定性に優れ、耐風柱をあらわし仕上げとする場合でも、美麗で良好な質感が得られる。 In addition, because it uses a wind-resistant column made of laminated lumber, it has excellent strength and dimensional stability compared to sawn timber, and even when the wind-resistant column is exposed and finished, a beautiful and good texture can be obtained.
　さらに、他の軸組部分よりも耐風柱の奥行き（見込み寸法）が大きくなることを利用して、この奥行き寸法内にブラインドやパネルラジエータ等の窓関連設備を納めることも可能になる。 Furthermore, by utilizing the fact that the depth (estimated dimension) of the windproof column is larger than that of other framework parts, it is possible to accommodate window-related equipment such as blinds and panel radiators within this depth dimension.
本発明の実施形態に係る木造建物の外観立面略図である。It is an external elevation diagram of the wooden building which concerns on embodiment of this invention. 上記建物の吹抜け開口部の軸組構造を屋内側から見た部分分解斜視図である。It is a partial decomposition perspective view of the framework structure of the atrium opening of the building seen from the indoor side. 従来の開口部の補強構造の一例を示す木造建物の外観立面略図である。It is an external elevation diagram of a wooden building which shows an example of the reinforcement structure of the conventional opening.
　以下、本発明の実施の形態について図を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　図１は、本発明の実施形態に係る木造建物の外観立面略図、図２は上記建物の吹抜け開口部の軸組構造を屋内側から見た部分分解斜視図である。 FIG. 1 is a schematic external elevation of the wooden building according to the embodiment of the present invention, and FIG. 2 is a partially exploded perspective view of the framework structure of the atrium opening of the building as viewed from the indoor side.
　この建物１は２階建てで、屋内に２階層分の吹抜け空間が設けられ、この吹抜け空間に面する外壁に、２階層分にわたる縦長の開口部２が設けられる。図２において、符号３は本発明の要部を構成する耐風柱、符号４は鉄筋コンクリート製の基礎、符号５は躯体軸組の最上部に配置される軒桁、符号６は外壁の軸組を構成する胴差である。 This building 1 is a double-decker building, and a two-story atrium space is provided indoors, and a vertically long opening 2 for two levels is provided on the outer wall facing the atrium space. In FIG. 2, reference numeral 3 is a windproof column constituting a main part of the present invention, reference numeral 4 is a reinforced concrete foundation, reference numeral 5 is an eaves girder arranged at the top of a frame frame, and reference numeral 6 is a frame of an outer wall. It is a constituent body difference.
　耐風柱３は、開口部２の両側部と、この例では開口部２を幅方向に略三等分する中間位置に、計４本配置される。耐風柱３は、例えば長軸360ｍｍ ×短軸120ｍｍ の矩形断面を有する集成材からなり、断面の長軸方向を開口面と直交させて立設される。耐風柱３の断面寸法は例示の限りではないが、長軸寸法が短軸寸法の概ね２倍以上、好ましくは２．５倍～３．５倍であるものが強度的にも好適である。 A total of four windproof columns 3 are arranged at both sides of the opening 2 and in this example, at an intermediate position that substantially divides the opening 2 into three equal parts in the width direction. The windproof column 3 is made of laminated lumber having a rectangular cross section of, for example, a major axis of 360 mm and a minor axis of 120 mm, and is erected with the major axis direction of the cross section orthogonal to the opening surface. The cross-sectional dimensions of the windproof column 3 are not limited to examples, but those having a major axis dimension of approximately twice or more, preferably 2.5 to 3.5 times the minor axis dimension are also preferable in terms of strength.
　耐風柱３は、２階層分にわたり一材で途切れなく連続している。耐風柱３の柱脚は、適宜の柱脚金物７を介して鉄筋コンクリート製の基礎４に固定され、柱頭は、適宜の柱梁金物８を介して、この例では軒桁５に対し、柱勝ちとなるように接合されている。 The windproof pillar 3 is continuous with one material over two layers. The column base of the windproof column 3 is fixed to the reinforced concrete foundation 4 via an appropriate column base metal fitting 7, and the stigma wins against the eaves girder 5 in this example via an appropriate column beam metal fitting 8. It is joined so as to be.
　符号９は、耐風柱３同士を水平方向に連結する柱つなぎ材である。柱つなぎ材９は、耐風柱３よりも断面寸法の小さい部材で、この例では、胴差６と同程度か、胴差６よりも小断面の集成材が利用される。柱つなぎ材９は、耐風柱３の側面に、適宜の柱梁金物１０を介して接合される。柱つなぎ材９の取付高さは、上下階間に設けられる床組等の高さには影響されず、耐風柱３の高さ方向における適宜の中間位置を設定することができる。 Reference numeral 9 is a column connecting material that connects the windproof columns 3 in the horizontal direction. The column connecting member 9 is a member having a cross-sectional dimension smaller than that of the wind-resistant column 3, and in this example, a laminated wood having a cross-section similar to that of the body difference 6 or a cross section smaller than that of the body difference 6 is used. The column connecting member 9 is joined to the side surface of the windproof column 3 via an appropriate column-beam hardware 10. The mounting height of the column connecting member 9 is not affected by the height of the floor structure or the like provided between the upper and lower floors, and an appropriate intermediate position in the height direction of the windproof column 3 can be set.
　このようにして構成される開口部２は、耐風柱３の強軸方向が開口面と直交しているので、開口面に作用する風圧に対して高い抵抗力を発揮する。これにより、大きくて解放感に富む開口部２を設計することができる。耐風柱３の断面寸法や配置間隔等を適切に設定すれば、開口部２の高さを３階層以上にすることも可能である。 Since the strong axis direction of the windproof column 3 is orthogonal to the opening surface, the opening 2 configured in this way exhibits a high resistance to the wind pressure acting on the opening surface. Thereby, it is possible to design the opening 2 which is large and has a rich feeling of liberation. If the cross-sectional dimensions of the windproof columns 3 and the arrangement intervals are appropriately set, the height of the openings 2 can be set to three or more layers.
　なお、開口部２に取り付けられる窓サッシ類については、図示を省略しているが、耐風柱３の屋外側、屋内側、及び奥行き寸法内のいずれにも設置することができる。集成材からなる耐風柱３は、インテリア及びエクステリアの両方に利用できるので、この点でも有利であるが、屋内側または屋外側に露出した耐風柱３の表面を適宜の仕上材でカバーすることも、もちろん可能である。 Although the window sashes attached to the opening 2 are not shown, they can be installed on the outdoor side, the indoor side, and within the depth dimension of the windproof column 3. The windproof pillar 3 made of laminated lumber is advantageous in this respect because it can be used for both interior and exterior, but the surface of the windproof pillar 3 exposed on the indoor side or the outdoor side may be covered with an appropriate finishing material. Of course it is possible.
２　　開口部
３　　耐風柱
４　　基礎
５　　軒桁
７　　柱脚金物
８　　柱梁金物
９　　柱つなぎ材 2 Opening 3 Windproof pillar 4 Foundation 5 Eaves girder 7 Pillar base hardware 8 Pillar beam hardware 9 Pillar connecting material

Claims (4)

  1. 　吹抜け空間に面した外壁に２階層以上の高さにわたって設けられる開口部に、断面の長軸寸法が短軸寸法の少なくとも２倍以上となるように形成された集成材からなる耐風柱を、その長軸方向を開口面と直交させて上下階に連続するように立設し、この耐風柱によって開口面に作用する風圧に抵抗することを特徴とする吹抜け開口部の軸組構造。 A wind-resistant column made of laminated wood formed so that the major axis dimension of the cross section is at least twice the minor axis dimension in the opening provided in the outer wall facing the atrium space over a height of two or more layers. A framework structure of a stairwell opening, which is erected so as to be continuous on the upper and lower floors with the major axis direction orthogonal to the opening surface, and resists the wind pressure acting on the opening surface by this wind resistant column.
  2. 　耐風柱は開口部の両側部を含めて開口面内に複数本立設され、それらの耐風柱が、高さ方向の適宜中間位置で、水平方向の柱つなぎ材により連結されたことを特徴とする請求項１に記載の吹抜け開口部の軸組構造。 A plurality of wind-resistant columns are erected in the opening surface including both sides of the opening, and the wind-resistant columns are connected by a horizontal column connecting material at an appropriate intermediate position in the height direction. The framework structure of the atrium opening according to claim 1.
  3. 　耐風柱の柱脚は、適宜の柱脚金物を介して、基礎に直接、固定されたことを特徴とする請求項１に記載の吹抜け開口部の軸組構造。 The frame structure of the atrium opening according to claim 1, wherein the column base of the windproof column is directly fixed to the foundation via an appropriate column base hardware.
  4. 　耐風柱の柱頭は、適宜の柱梁金物を介して、軒桁、またはこれに準ずる軸組躯体最上部の梁材に直接、固定されたことを特徴とする請求項１に記載の吹抜け開口部の軸組構造。 The atrium opening according to claim 1, wherein the stigma of the wind-resistant column is directly fixed to the eaves girder or a beam material at the uppermost part of the frame frame equivalent thereto via an appropriate column beam hardware. Frame structure.
PCT/JP2020/021587 2020-06-01 2020-06-01 Framework structure for wellhole opening portion WO2021245737A1 (en)

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US17/623,266 US20230091125A1 (en) 2020-06-01 2020-06-01 Post and beam structure at a multi-height opening portion
GB2200228.1A GB2608479A (en) 2020-06-01 2020-06-01 Framework structure for wellhole opening portion
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