JP2004036288A

JP2004036288A - Tension truss structural body and curtain wall

Info

Publication number: JP2004036288A
Application number: JP2002196828A
Authority: JP
Inventors: Koichiro Nawa; 縄　孝一郎; Keiji Sano; 佐野　圭司; Hiroaki Komatsu; 小松　浩明
Original assignee: YKK AP Inc
Current assignee: YKK AP Inc
Priority date: 2002-07-05
Filing date: 2002-07-05
Publication date: 2004-02-05
Anticipated expiration: 2022-07-05
Also published as: JP3936634B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tension truss structural body and a curtain wall capable of curtailing work-labor of a cable material and the number of components, and capable of raising architectural design efficiency. <P>SOLUTION: The tension truss structural body fixing both ends to fixed members on the end section arranged at a predetermined interval is constituted by having the cable material 11 as a tension material laid between fixed members on the end sections, a supporting member 30 placed between the fixed members on the end sections, a fixed member 40 as a fixed means for fixing a middle part of the cable material 11 to the supporting member 30 and a tension setting means for setting the tension of the cable material 11. Accordingly, the work-labor of the cable material 11 and the number of components such as an anchor device or the like can be cut without making cutting-work of the cable material 11 in every span and being required for setting the anchor device or the like corresponding to every span on both sides of the supporting member 30. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、テンショントラス構造体およびカーテンウォールに関する。
【０００２】
【背景技術】
近年のビル等では、カーテンウォールによる外壁面にも様々な意匠のものが使用されるようになった。
例えば、大型ビルの低層階に配置される吹き抜け空間の外壁として、ガラスカーテンウォールを用いることが多い。
このガラスカーテンウォールとしては、ガラスを支持する構造をできるだけ目立たなくするために、通常、ＤＰＧ（ドット・ポイント・グレイジング）方式により支持されたカーテンウォールが用いられている。このＤＰＧ方式のガラスカーテンウォールでは、ガラスパネルの四隅に貫通孔を形成し、互いに隣接する４枚のガラスパネルの４つの貫通孔を、正面略Ｘ字形状やＨ字形状等の支持具で支持するため、構造材が露出せず、外観を良好にできる。
【０００３】
このような支持具は、通常、ガラスカーテンウォールの室内側に配置された、テンショントラス構造体に連結され、ガラスパネルに加わる自重や風圧等の荷重がテンショントラス構造体で支持されている。テンショントラス構造体は、所定の間隔を離して設けられた柱や梁、方立等の間（スパン）に、例えば２本を１組としたテンション材としてのケーブル材を架け渡して構成されている。また必要に応じて、スパン途中のケーブル材間にコンプレッション材としての束材を取り付けて、ケーブル材の間隔および架け渡し方向に関する角度等のケーブル材の架設形状が所定のトラス形状となるようにされている。さらに、ケーブル材に所定の張力を導入して、所定の剛性および強度を備えたテンショントラス構造体が形成される。
【０００４】
このようなテンショントラス構造体においては、従来、特開平７−７１０８３号公報に示されるように、ケーブル材は、１つのスパンに対応した長さに形成されている。そして、ケーブル材の両端は、建物躯体に固定具を介して固定され、これらケーブル材の両端の固定具のうちのいずれか一方には、張力設定手段としての螺合部が設けられている。この螺合部は、ケーブル材の端部をその軸回りに回転自在に係合し、躯体に取り付けられた固定部に螺合され、この螺合の深さによって、ケーブル材に導入する張力を調整する構成となっている。
【０００５】
【発明が解決しようとする課題】
ところで、上述した従来のテンショントラス構造体では、建物躯体のスパンごとに、そのスパンに対応した長さにケーブル材が切断加工され、その両端部が固定されている。従って、複数スパンに渡るテンショントラス構造体の場合、スパンの数だけケーブル材を切断し端部処理する加工手間が掛かり、さらに、スパンごとに固定部および螺合部等を有した固定具が必要となり、部品点数が増大するという問題がある。また、各スパンごとにケーブル材の両端部に固定部が存在するため、建物外部からガラスパネルを通した外観および室内側からの内観が損なわれ、意匠性が低下するという問題がある。
【０００６】
本発明の目的は、ケーブル材の加工手間および部品点数を削減でき、意匠性を向上できるテンショントラス構造体およびカーテンウォールを提供することにある。
【０００７】
【課題を解決するための手段】
本発明のテンショントラス構造体は、所定間隔離れて配置された端部固定部材に両端が固定され、当該各端部固定部材間に架け渡されるテンション材と、前記各端部固定部材間に配置される支持部材と、前記テンション材の途中部分を前記支持部材に固定する固定手段と、前記テンション材の張力を設定する張力設定手段とを備えて構成されることを特徴とする。
【０００８】
ここで、テンション材としては、ＰＣ鋼より線（ストランド）や単線等からなるケーブル材の他、ＰＣ鋼棒やワイヤロープ等の可撓性を有する線状材料が含まれる。
また、端部固定部材または支持部材は、柱や梁、壁、床等の建物躯体、および方立や無目等の所定強度および剛性を備え、テンション材から伝達される荷重を支持可能な部材を意味する。そして、これらの各部材から適宜選択した部材を端部固定部材または支持部材として適用でき、例えば、端部固定部材および支持部材ともに同様の部材としての柱で構成してもよく、また、端部固定部材を柱で構成し、支持部材を方立で構成することも可能である。
【０００９】
このような本発明によれば、端部固定部材間に架け渡されるケーブル材（テンション材）の途中部分を固定手段により支持部材に固定できるため、端部固定部材間を支持部材で区切った間隔（スパン）ごとにケーブル材を切断加工する必要がなく、また、支持部材の両側にそれぞれのスパンに対応した固定具を設ける必要もないため、ケーブル材の加工手間および固定具等の部品点数を削減できる。また、支持部材に取り付けられる固定具等が減少することで、意匠性を向上することができる。
【００１０】
また、本発明のテンショントラス構造体では、前記支持部材は、所定間隔離れて互いに対向配置される複数の支持部材本体を備えて構成され、前記固定手段は、前記各支持部材本体間に着脱自在に取り付けられる固定部材であり、この固定部材を介して前記テンション材の途中部分が前記支持部材に固定されることを特徴とする。
【００１１】
このような構成では、固定部材を介してケーブル材の途中部分を支持部材に固定するため、支持部材側にケーブル材を固定する固定部等を設ける必要がなく、支持部材の加工および施工性を向上できる。また、固定部材が支持部材本体間に着脱自在に取り付けられるので、ケーブル材の架け渡し施工に際して固定部材が邪魔にならず、施工性を向上できるとともに、施工途中等に、ケーブル材や固定部材が傷付いたり破損した場合であっても、それらの部材を容易に交換することができる。
【００１２】
この際、本発明のテンショントラス構造体では、前記支持部材本体には、互いに対向する位置に受け部が設けられ、前記固定部材は、軸材と、この軸材の端部に螺合される端部部材とを有し、これらの軸材および端部部材が当該軸材の軸回りに関して相対回転することで、前記端部部材が前記軸材の軸方向に進退移動する伸縮機構を備え、この伸縮機構の操作により、前記固定部材の全長が伸張することで、当該固定部材と前記各支持部材本体の受け部とが係合し、当該固定部材が前記支持部材に取り付けられることを特徴とする。
【００１３】
このような構成では、固定部材の伸縮機構の操作により固定部材の全長を伸縮させることによって、各支持部材本体間に互いに対向して設けられた受け部に、固定部材を容易に係合、固定することができ、固定部材の取付作業を迅速に行うことができる。また、互いに螺合される軸材および端部部材を相対回転させるだけで伸縮機構を操作できるので、固定部材を容易に固定することができるとともに、無段階で伸縮長さを調節でき固定の際の微調整が可能である。
【００１４】
さらに、本発明のテンショントラス構造体では、前記端部固定部材と前記支持部材との間には、前記テンション材に取り付けられる束材が配置され、前記束材は、軸材と、この軸材の端部に螺合される端部部材とを有し、これらの軸材および端部部材が当該軸材の軸回りに関して相対回転することで、前記端部部材が前記軸材の軸方向に進退移動する伸縮機構を備え、前記テンション材は、当該テンション材の延長方向と前記軸材の軸方向とが交差する状態で、前記束材の端部部材に保持され、前記張力設定手段は、前記束材で構成され、当該束材の伸縮機構の操作により、前記端部部材の前記テンション材を保持する位置を移動させることで、当該テンション材の張力を調整可能に構成されることを特徴とする。
【００１５】
また、本発明のテンショントラス構造体では、前記支持部材は、互いに所定間隔離れて複数配置され、これらの各支持部材間には、前記テンション材に取り付けられる束材が配置され、前記束材は、軸材と、この軸材の端部に螺合される端部部材とを有し、これらの軸材および端部部材が当該軸材の軸回りに関して相対回転することで、前記端部部材が前記軸材の軸方向に進退移動する伸縮機構を備え、前記テンション材は、当該テンション材の延長方向と前記軸材の軸方向とが交差する状態で、前記束材の端部部材に保持され、前記張力設定手段は、前記束材で構成され、当該束材の伸縮機構の操作により、前記端部部材の前記テンション材を保持する位置を移動させることで、当該テンション材の張力を調整可能に構成されることを特徴とする。
【００１６】
このような構成では、端部固定部材と支持部材との間、または複数配置された支持部材間の各スパンでケーブル材に取り付けられ、ケーブル材の架設形状を所定のトラス形状に維持する束材が伸縮機構を備えることによって、ケーブル材に張力を導入し、調整することができる。従って、各スパンごとに別途ターンバックル等の張力設定手段を設ける必要がなく、部材点数をさらに削減できる。また、束材をケーブル材に取り付ける作業と、束材の伸縮機構を操作しケーブル材に張力を導入し、調整する作業とを連続的に行えるので、作業効率を向上できる。さらに、各スパンにおいて、目に付く部材はケーブル材および束材のみとすることで、構造体が目立たず、意匠性をさらに向上することができる。
【００１７】
さらに、本発明のテンショントラス構造体では、前記テンション材は、２本を１組として前記各端部固定部材間に架け渡され、前記束材の端部部材は、前記軸材の両端部に形成された互いに逆向きのねじ部に螺合された２部材で構成され、これらの各端部部材に前記各テンション材が各々保持され、前記束材で構成された前記張力設定手段は、当該束材の伸縮機構の操作により、前記各端部部材同士が前記軸材の軸方向に関して互いに逆向きに進退移動し、当該各端部部材に保持された前記各テンション材同士の間隔を変化させることで、当該各テンション材の張力を調整可能に構成されることを特徴とする。
【００１８】
このような構成では、束材の伸縮機構を操作し各端部部材を互いに逆向きに進退移動させ、２本１組で構成されるケーブル材同士の間隔を変化させることによって、一度の作業で２本のケーブル材に張力を導入し、調整することができ、作業効率を向上できる。
【００１９】
また、本発明のカーテンウォールは、請求項１ないし請求項６のいずれかに記載のテンショントラス構造体と、このテンショントラス構造体のテンション材の架け渡し方向に沿って配置される壁面材と、この壁面材を前記テンショントラス構造体に連結する連結部材とを備えることを特徴とする。
【００２０】
このような本発明によれば、カーテンウォールの壁面材を支持するテンショントラス構造体において、端部固定部材間に架け渡されるケーブル材の途中部分を固定手段により支持部材に固定できるため、スパンごとにケーブル材を切断加工する必要がなく、また、支持部材の両側にそれぞれのスパンに対応した固定具を設ける必要もないため、ケーブル材の加工手間および固定具等の部品点数を削減できる。また、支持部材に取り付けられる固定具等が減少することで、構造体が目立たずカーテンウォールの意匠性を向上することができる。
【００２１】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。
図１は、本発明の実施形態に係るカーテンウォール１の一部を示す斜視図であり、図２は、その平面図である。
図１、図２において、カーテンウォール１は、壁面材としての複数のガラスパネル２と、これらのガラスパネル２を支持するテンショントラス構造体１０と、ガラスパネル２とテンショントラス構造体１０とを連結する連結部材４とを備えて構成されている。
【００２２】
カーテンウォール１は、建物の吹き抜け部分の室内側と室外側とを仕切る外壁面を形成し、建物室外側は、ガラスパネル２のみで構成されたフラットな外観を有し、建物室内側に設けられたテンショントラス構造体１０によって支持されている。複数のガラスパネル２は、それぞれ所定の大きさの矩形状に形成され、各々のガラスパネル２同士の間はシール材によって接続され、４枚のガラスパネル２が寄せ集められた隅部がＤＰＧ（ドット・ポイント・グレイジング）方式で支持されている。すなわち、ガラスパネル２の四隅には図示しない貫通孔が設けられ、この貫通孔を通して４枚のガラスパネル２の各隅部が１つのスパイダーブラケット３に固定されている。スパイダーブラケット３は、正面略Ｘ字形またはＨ字形等の形状を有する支持具であって、その室内側がテンショントラス構造体１０に連結部材４を介して連結されている。
【００２３】
テンショントラス構造体１０は、カーテンウォール１の外壁面に沿って配置される、端部固定部材としての端部トラス柱２０と、支持部材としての中間トラス柱３０と、これら端部トラス柱２０および中間トラス柱３０の間に連続して架け渡される、２本を１組としたテンション材としてのケーブル材１１とを備えて構成されている。端部トラス柱２０および中間トラス柱３０は、所定間隔（スパンＬ１）として、ガラスパネル２の３枚分の幅と対応する距離だけ互いに離れて立設されている。１組のケーブル材１１は、ガラスパネル２の１枚分の高さだけ互いに間隔を離して水平方向に架け渡されている。なお、本実施形態において、ケーブル材１１は、ＰＣ鋼より線（ストランド）から構成されている。
【００２４】
端部トラス柱２０は、ケーブル材１１の両端部に配置されるものであって、本実施形態においては、カーテンウォール１全体の両端部（図１，２では、片側端部のみを示す）の２箇所に配置され、建物躯体としての本柱５に結合されている。そして、端部トラス柱２０は、鉛直方向に延び、互いに平行に立設された３本の鋼管製柱材２１と、これらの柱材２１間を連結する鋼管製の水平材２２および斜材２３とが、互いに溶接されて一体に形成されたトラス柱となっている。これら各部材のうち室内外方向に沿って配置された水平材２２には、ケーブル材１１の端部を固定するブラケット２４が溶接され、固定具２５を介してケーブル材１１の端部が固定されている。
【００２５】
中間トラス柱３０は、各端部トラス柱２０の間を所定のスパンＬ１に区切った各位置（図１，２では、１箇所のみを示す）に立設されている。そして、中間トラス柱３０は、室内外方向に互いに所定間隔離れて立設される支持部材本体としての２本の鋼管製柱材３１と、これらの柱材３１間を連結する鋼管製の斜材３３とが、互いに溶接されて一体に形成されている。中間トラス柱３０には、ケーブル材１１が配設される高さ位置に対応して、ケーブル材１１の途中部分を中間トラス柱３０に固定する固定部材としてのトラス束材４０が取り付けられている。
【００２６】
図３、図４は、中間トラス柱３０に取り付けられるトラス束材４０の要部を示す斜視図および要部を拡大して示す平面図である。図３、図４において、トラス束材４０は、中間トラス柱３０の２本の柱材３１の互いに対向する側面に設けられた、受け部としての略円筒状の受けブラケット３４に嵌合、固定されている。２本のケーブル材１１は、各々の途中部分をトラス束材４０の両端部側で保持されている。
【００２７】
また、図２に示すように、１組のケーブル材１１は、スパンＬ１内において、２本のケーブル材１１が交差する２箇所の交差区間Ａと、ケーブル材１１が互いに平行に配設される平行区間Ｂとを有して架け渡されている。交差区間Ａと平行区間Ｂとの境界位置、すなわち、隣接するガラスパネル２同士の接続箇所と対応した位置には、２本のケーブル材１１の架設形状を所定のトラス形状に維持する束材５０が配置されている。
図５は、スパンＬ１の途中位置でケーブル材１１を保持する束材５０の要部を拡大して示す平面図である。図２および図５において、２本のケーブル材１１は、各々の途中部分を束材５０の両端部側で保持されている。
【００２８】
図６には、トラス束材４０および束材５０の側面図が示されている。束材５０は、トラス束材４０と同様の構造を有しているため、以下、トラス束材４０について説明し、束材５０に関しては対応する部材または部位の符号のみを括弧内に示す。
図６において、トラス束材４０（５０）は、円筒状の軸材４１（５１）と、この軸材４１（５１）の両端部に螺合される２つの端部部材４２（５２）とを備えている。これら２つの端部部材４２（５２）は、ケーブル材１１を保持する溝部４２Ａ（５２Ａ）およびカバー材４３（５３）を有しており、カバー材４３（５３）をボルト４４（５４）で固定することで、溝部４２Ａ（５２Ａ）とカバー材４３（５３）との間にケーブル材１１が挟持、固定される。溝部４２Ａ（５２Ａ）の端部には、ケーブル材１１が軸材４１（５１）の軸方向に直交する方向と傾斜した状態で保持される際にも、ケーブル材１１がなだらかな曲率を有して保持されるように、面取り４２Ｄ（５２Ｄ）が施されている。
【００２９】
また、トラス束材４０（５０）の軸材４１（５１）の両端部内周および端部部材４２（５２）の軸材４１（５１）側には、互いに螺合する雌ねじ４１Ａ（５１Ａ）および雄ねじ４２Ｃ（５２Ｃ）が形成されている。これらの雌ねじ４１Ａ（５１Ａ）および雄ねじ４２Ｃ（５２Ｃ）は、軸材４１（５１）の両端部で互いに逆向きの螺合方向を有して形成されており、軸材４１（５１）をその軸回りに回転することで、各端部部材４２（５２）が軸材４１（５１）の軸に沿った方向に互いに逆向きに進退移動するようにされている。すなわち、ケーブル材１１を保持する各端部部材４２（５２）は回転しないように、その回転を規制した状態で、軸材４１（５１）をレンチ等を用いて所定の回転方向に回転することで、各端部部材４２（５２）が互いに離れる方向、あるいは互いに近づく方向に移動する。このような各端部部材４２（５２）の互いに逆向きの進退移動によって、トラス束材４０（５０）の全長が伸縮する伸縮機構が構成されている。
【００３０】
さらに、トラス束材４０の両端部である端部部材４２の軸材４１と反対側には、前記中間トラス柱３０の２本の柱材３１に設けられた受けブラケット３４に嵌合する突出部４２Ｂが形成されている。また、束材５０の両端部である端部部材５２の軸材５１と反対側にも同様に、突出部５２Ｂが形成され、室外側の突出部５２Ｂに前記連結部材４が嵌合されている。
なお、ケーブル材１１の張力設定手段は、束材５０により構成されており、束材５０の伸縮機構を操作して各端部部材５２で保持した１組のケーブル材１１の間隔を広げることで、ケーブル材１１に張力が導入され、間隔を調整することによってケーブル材１１の張力が調整可能とされている。
【００３１】
次に、本実施形態のテンショントラス構造体１０の施工方法について説明する。
端部トラス柱２０および中間トラス柱３０を立設後、２箇所の端部トラス柱２０同士の間の距離に対応した長さに形成されたケーブル材１１を２本１組として、配設される高さ位置に応じた中間トラス柱３０の柱材３１間に通して、２箇所の端部トラス柱２０に渡って仮置き、配設する。そして、ケーブル材１１の両端部を端部トラス柱２０のブラケット２４に固定具２５を介して固定する。続いて、中間トラス柱３０の位置において、トラス束材４０の伸縮機構を操作しながら、２本の柱材３１間の受けブラケット３４にトラス束材４０の突出部４２Ｂを嵌合してトラス束材４０を取り付ける。さらに、ケーブル材１１の長さ方向における所定の途中位置をトラス束材４０の端部部材４２の溝部４２Ａに挿通し、カバー材４３を取り付けて、ボルト４４を締めてケーブル材１１を固定する。
【００３２】
以上の作業で、ケーブル材１１の端部または途中部分は、端部トラス柱２０あるいは中間トラス柱３０に固定される。次に、各スパンＬ１において、交差区間Ａではケーブル材１１を交差し、交差区間Ａと平行区間Ｂとの境界位置おけるケーブル材１１の所定の中間位置を束材５０の端部部材５２の溝部５２Ａに挿通し、カバー材５３を取り付けて、ボルト５４を締めてケーブル材１１を固定する。さらに、束材５０の伸縮機構を操作しながら、１組のケーブル材１１の間隔を広げる方向に束材５０の全長を伸ばしながら、ケーブル材１１に張力を加える。このように所定の張力が加えられたケーブル材１１は、上下および室内外方向に対して所定の剛性を有するテンショントラス構造体１０として機能する。
その後、束材５０の突出部５２Ｂに連結部材４を嵌合し、この連結部材４および端部トラス柱２０、中間トラス柱３０各々の室外側柱材２１，３１にスパイダーブラケット３およびガラスパネル２を取り付けてカーテンウォール１が完成する。
【００３３】
このような本実施形態によれば、以下のような効果がある。
（１）　端部トラス柱２０の間に架け渡されるケーブル材１１の途中部分をトラス束材４０を介して中間トラス柱３０に固定することによって、各スパンＬ１ごとにケーブル材１１を切断加工する必要がなく、また、中間トラス柱３０の両側にそれぞれのスパンＬ１に対応した固定用のブラケットや固定具を設ける必要もないため、ケーブル材１１の加工手間および固定具等の部品点数を低減できる。
【００３４】
（２）　中間トラス柱３０に固定用の固定具等を設ける必要がないので、テンショントラス構造体１０がスマートに見え、建物外部からガラスパネル２を通した外観および室内側からの内観の意匠性を向上することができる。
【００３５】
（３）　中間トラス柱３０の２本の柱材３１間にトラス束材４０が着脱自在に取り付けられることによって、トラス束材４０を後から取り付けることができるので、ケーブル材１１の架け渡し施工に際して、トラス束材４０が邪魔にならず、施工性を向上することができる。
【００３６】
（４）　トラス束材４０を中間トラス柱３０の２本の柱材３１間に架け渡して取り付けることによって、トラス束材４０を確実に固定することができるとともに、トラス束材４０を着脱自在に取り付けることによって、施工途中等に、ケーブル材１１やトラス束材４０が傷付いたり破損した場合であっても、それらの部材を容易に交換することができる。
【００３７】
（５）　トラス束材４０の伸縮機構によりトラス束材４０の全長を伸長することによって、中間トラス柱３０の２本の柱材３１間に設けられた受けブラケット３４に、トラス束材４０を容易に係合することができ、トラス束材４０の取付作業を迅速に行うことができる。また、トラス束材４０の軸材４１を回転操作し、トラス束材４０を伸張するだけで取り付けられるので、建設現場において溶接等による固定の必要がなく、部材接合部の外観を綺麗に仕上げることができる。
【００３８】
（６）　スパンＬ１途中において、ケーブル材１１の架設形状を所定のトラス形状に維持する束材５０の伸縮機構を操作し、ケーブル材１１の間隔を拡げることで、ケーブル材１１に張力を導入、調整する張力設定手段が構成されているため、別途ターンバックル等を設置しなくても張力設定でき、部材点数をさらに削減できる。また、束材５０自体が張力設定機能を有するため、構造体が目立たず、意匠性をさらに向上することができる。
【００３９】
（７）　束材５０で構成された張力設定手段によりケーブル材１１に張力を導入、調整できるので、束材５０をケーブル材１１に取り付ける作業と、ケーブル材１１に張力を導入し、調整する作業とを連続的に行え、作業効率を向上できる。さらに、２本１組で構成されるケーブル材１１同士の間隔を変化させることによって、一度の作業で２本のケーブル材１１に張力を導入し、調整することができ、作業効率を一層向上できる。
【００４０】
（８）　中間トラス柱３０やスパンＬ１の途中位置に、機能および外観が共通したトラス束材４０および束材５０を取り付けることによって、テンショントラス構造体１０のデザインの統一性が図られ、意匠性をさらに向上することができる。
【００４１】
なお、本発明を実施するための最良の構成、方法などは、以上の記載で開示されているが、本発明は、これに限定されるものではない。
すなわち、本発明は、主に特定の実施の形態に関して特に図示され、かつ、説明されているが、以上述べた実施の形態に対し、本発明の技術的思想および目的の範囲から逸脱することなく、形状、材質、数量、その他の詳細な構成において、当業者が様々な変形を加えることができる。
【００４２】
例えば、前述の実施形態では、端部トラス柱２０および中間トラス柱３０を所定スパンＬ１の間隔で配置し、これらの間にケーブル材１１を水平方向に架け渡したが、これに限らず、建物躯体としての梁材を高さ方向に所定間隔（階高）離して配置し、これらの梁材間に鉛直方向にケーブル材を架け渡すこととしてもよい。
また、端部トラス柱２０および中間トラス柱３０は、鋼管製の柱材２１，３１や斜材２３，３３等の部材をそれぞれ溶接してトラス状に形成したが、これに限らず、鉄筋コンクリート製や鉄骨製、木製の材料から構成された柱や梁、壁、床等の建物躯体、および方立や無目等とすることができる。また、端部トラス柱２０は、３本の柱材２１を備えて形成されるものに限らず、２本の柱材と水平材および斜材とから形成され、中間トラス柱３０と同様の形態とされたものでもよい。
さらに、カーテンウォール１全体の両端部に端部トラス柱２０を配置することに限らず、カーテンウォールの中間位置に１箇所または２箇所以上の端部固定部材を配置し、カーテンウォール全体を２区間または３区間以上の区間に分けて、これらの区間ごとに所定間隔で支持部材を配置し、区間ごとの長さに対応したケーブル材を架け渡してテンショントラス構造体を構成してもよい。
【００４３】
また、前述の実施形態では、テンショントラス構造体１０をカーテンウォール１の壁面材を支持する構造体として適用したが、これに限らず、遮音壁や吸音壁等に利用される幕体や防護ネット等に利用される網体等を支持する構造体としても適用できる。また、鉛直に形成される壁状の構造物以外に、水平方向に架設される屋根や床等を支持する構造体としても適用できる。
また、前述の実施形態では、中間トラス柱３０の柱材３１間にトラス束材４０を、その伸縮機構を操作して全長を伸張することによって固定することとしたが、これに限らず、柱材に上方に開口した凹状の嵌合部を有するブラケットを取り付けておき、端部に凸状の突出部を形成したトラス束材を上方から、突出部が嵌合部に凸凹嵌合するように取り付け、ビス等により固定してもよい。また、トラス束材４０は着脱自在に中間トラス柱３０に取り付けることとしたが、これに限らず、ケーブル材を保持するケーブル保持部を支持部材に設け、このケーブル保持部によりケーブル材を直接支持部材に固定してもよい。
【００４４】
また、前述の実施形態では、端部トラス柱２０において、ケーブル材１１の端部をブラケット２４に固定具２５を介して固定することとしたが、これに限らず、ターンバックル等の長さ調節可能な部材を介して固定することもできる。このようにすれば、ケーブル材の加工時における加工誤差を吸収し、精度良くテンショントラス構造体を施工することができる。また、このようなターンバックルは張力設定手段としても利用可能であるが、ターンバックルは、ケーブル材の端部にのみ配置可能であるため、ケーブル材の中間部分を固定する中間躯体で挟まれたスパンに関しては、ターンバックルは適用できず、前述の実施形態で説明した束材５０による張力設定手段を適用することとなる。
【００４５】
また、前述の実施形態では、トラス束材４０および束材５０は、軸材４１，５１の両端部に端部部材を互いに逆ねじによって螺合することで、伸縮機構を構成するものとしたが、これに限らず、互いに螺合する２つの部材から構成してもよく、油圧ジャッキ等のように、オイルや水、気体等の圧力を利用し、この圧力を調整することにより伸縮機構を構成するものとしてもよい。ただし、軸材を回転操作するだけで両端部部材が回転することなく進退移動可能な、前述の実施形態によれば、簡単な構造を有し、かつ、操作容易な伸縮機構を構成し、かつ、伸縮長さの微調整を可能にできる。
【００４６】
また、ケーブル材１１は、ＰＣ鋼より線（ストランド）からなるケーブル材としたが、これに限らず、単線から形成された鋼線やワイヤロープ、可撓性を有する鋼棒でもよい。さらに、ケーブル材１１は２本１組で架け渡されるものに限らず、１本でもよく、また３本以上のケーブル材を１組としてもよい。
さらに、ＤＰＧ（ドット・ポイント・グレイジング）方式によりガラスパネルを支持するスパイダーブラケットは、正面略Ｘ字形やＨ字形のものに限らず、Ｉ字形やロ字形の形状を有するブラケットを適用できる。
【００４７】
【発明の効果】
以上に述べたように、本発明のテンショントラス構造体およびカーテンウォールによれば、ケーブル材の加工手間および部品点数を削減でき、意匠性を向上できるという効果がある。
【図面の簡単な説明】
【図１】本発明の一実施形態に係るカーテンウォールの一部を示す斜視図である。
【図２】前記実施形態を示す平面図である。
【図３】前記実施形態の中間トラス柱の要部を示す斜視図である。
【図４】前記実施形態のトラス束材の要部を拡大して示す平面図である。
【図５】前記実施形態の束材の要部を拡大して示す平面図である。
【図６】前記実施形態のトラス束材および束材を示す側面図である。
【符号の説明】
２…壁面材であるガラスパネル、４…連結部材、１０…テンショントラス構造体、１１…テンション材であるケーブル材、２０…端部固定部材である端部トラス柱、３０…支持部材である中間トラス柱、３１…支持部材本体である柱材、４０…固定部材であるトラス束材、４１…軸材、４２…端部部材、５０…束材、５１…軸材、５１Ａ…雌ねじ（ねじ部）、５２…端部部材。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tension truss structure and a curtain wall.
[0002]
[Background Art]
In buildings and the like in recent years, various designs have come to be used for the outer wall surface of the curtain wall.
For example, a glass curtain wall is often used as an outer wall of a stairwell arranged on a lower floor of a large building.
As the glass curtain wall, a curtain wall supported by a DPG (dot point glazing) method is usually used in order to make the structure supporting the glass as inconspicuous as possible. In this DPG type glass curtain wall, through-holes are formed at four corners of a glass panel, and four through-holes of four glass panels adjacent to each other are supported by a support having a substantially X-shaped or H-shaped front face. Therefore, the structural material is not exposed, and the appearance can be improved.
[0003]
Such a support is usually connected to a tension truss structure disposed on the indoor side of the glass curtain wall, and a load such as the own weight or wind pressure applied to the glass panel is supported by the tension truss structure. The tension truss structure is configured by, for example, bridging a cable material as a tension material, which is a set of two, between columns, beams, cubicles, and the like (span) provided at predetermined intervals. I have. Also, if necessary, a bundle material as a compression material is attached between the cable materials in the middle of the span so that the erection shape of the cable materials such as the interval between the cable materials and the angle with respect to the bridging direction becomes a predetermined truss shape. ing. Further, a predetermined tension is introduced into the cable material to form a tension truss structure having a predetermined rigidity and strength.
[0004]
Conventionally, in such a tension truss structure, as shown in JP-A-7-71083, a cable material is formed to have a length corresponding to one span. Both ends of the cable member are fixed to the building frame via fixing members. One of the fixing members at both ends of the cable member is provided with a threaded portion as tension setting means. The threaded portion rotatably engages the end of the cable material around its axis, and is screwed to a fixed portion attached to the skeleton. Depending on the depth of this screwing, the tension introduced into the cable material is reduced. It is configured to adjust.
[0005]
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional tension truss structure, for each span of the building frame, the cable material is cut to a length corresponding to the span, and both ends are fixed. Therefore, in the case of a tension truss structure spanning a plurality of spans, it takes time and effort to cut and treat the end of the cable material by the number of spans, and further, a fixture having a fixing portion and a screw portion for each span is required. Therefore, there is a problem that the number of parts increases. In addition, since there are fixing portions at both ends of the cable material for each span, the appearance of the building through the glass panel and the interior from the room side are impaired, and the design is degraded.
[0006]
An object of the present invention is to provide a tension truss structure and a curtain wall that can reduce the processing time and the number of parts of a cable material and improve the design.
[0007]
[Means for Solving the Problems]
The tension truss structure of the present invention is configured such that both ends are fixed to end fixing members arranged at a predetermined distance from each other, and a tension member bridged between the respective end fixing members, and disposed between the respective end fixing members. And a fixing means for fixing an intermediate portion of the tension member to the support member, and a tension setting means for setting a tension of the tension member.
[0008]
Here, as the tension material, a flexible linear material such as a PC steel rod or a wire rope is included in addition to a cable material made of a PC steel stranded wire (strand) or a single wire.
Further, the end fixing member or the supporting member has a predetermined strength and rigidity such as columns, beams, walls, floors, and the like, and a member capable of supporting the load transmitted from the tension member. Means A member appropriately selected from these members can be applied as an end fixing member or a supporting member. For example, both the end fixing member and the supporting member may be constituted by pillars as similar members. It is also possible that the fixing member is formed of a pillar and the support member is formed of a cubic.
[0009]
According to the present invention as described above, the cable member (tension material) bridged between the end fixing members can be fixed to the supporting member by the fixing means, so that the interval between the end fixing members is divided by the supporting member. It is not necessary to cut the cable material for each (span), and it is not necessary to provide fixtures corresponding to each span on both sides of the support member. Can be reduced. Further, the design can be improved by reducing the number of fixtures and the like attached to the support member.
[0010]
Further, in the tension truss structure of the present invention, the support member is configured to include a plurality of support member main bodies which are arranged to face each other at a predetermined interval, and the fixing means is detachable between the respective support member main bodies. , And a middle part of the tension member is fixed to the support member via the fixing member.
[0011]
In such a configuration, since the middle portion of the cable member is fixed to the support member via the fixing member, it is not necessary to provide a fixing portion or the like for fixing the cable member on the support member side, and processing and workability of the support member can be reduced. Can be improved. In addition, since the fixing member is detachably attached between the supporting member main bodies, the fixing member does not become an obstacle when the cable material is bridged, and the workability can be improved, and the cable material and the fixing member can be used during the construction. Even if the member is damaged or damaged, the members can be easily replaced.
[0012]
In this case, in the tension truss structure of the present invention, the support member main body is provided with receiving portions at positions facing each other, and the fixing member is screwed to the shaft and an end of the shaft. With an end member, the shaft member and the end member are relatively rotated about the axis of the shaft member, so that the end member has a telescopic mechanism that moves forward and backward in the axial direction of the shaft member, By operating the expansion / contraction mechanism, the total length of the fixing member is extended, whereby the fixing member and the receiving portions of the support member main bodies are engaged, and the fixing member is attached to the support member. I do.
[0013]
In such a configuration, the entire length of the fixing member is expanded and contracted by operating the expansion and contraction mechanism of the fixing member. The fixing member can be mounted quickly. In addition, since the expansion and contraction mechanism can be operated only by relatively rotating the shaft member and the end member which are screwed together, the fixing member can be easily fixed, and the expansion and contraction length can be adjusted steplessly, and the fixing member can be fixed. Can be fine-tuned.
[0014]
Furthermore, in the tension truss structure of the present invention, a bundle attached to the tension member is disposed between the end fixing member and the support member, and the bundle includes a shaft, The end member is screwed to the end of the shaft member, and the shaft member and the end member are relatively rotated about the axis of the shaft member, so that the end member moves in the axial direction of the shaft member. The tension member is held by an end member of the bundle in a state where an extension direction of the tension member intersects with an axial direction of the shaft member, and the tension setting means includes: The tension member is configured by adjusting the tension of the tension member by moving a position of the end member that holds the tension member by operating a telescopic mechanism of the bundle member. And
[0015]
Further, in the tension truss structure of the present invention, a plurality of the support members are arranged at a predetermined interval from each other, and a bundle attached to the tension member is arranged between these support members. , A shaft member, and an end member screwed to an end portion of the shaft member, and the shaft member and the end member are relatively rotated about the axis of the shaft member, whereby the end member Is provided with an expansion and contraction mechanism that moves forward and backward in the axial direction of the shaft material, and the tension material is held by the end member of the bundle material in a state where the extension direction of the tension material and the axial direction of the shaft material intersect. The tension setting means is configured by the bundle material, and adjusts the tension of the tension material by moving a position of the end member that holds the tension material by operating a telescopic mechanism of the bundle material. Characterized to be configured as possible To.
[0016]
In such a configuration, the bundle material is attached to the cable material at each span between the end fixing member and the support member or between the plurality of arranged support members, and maintains the erected shape of the cable material in a predetermined truss shape. By having a telescopic mechanism, tension can be introduced into the cable material and adjusted. Therefore, it is not necessary to separately provide a tension setting means such as a turnbuckle for each span, and the number of members can be further reduced. In addition, since the operation of attaching the bundle to the cable and the operation of operating the expansion and contraction mechanism of the bundle to introduce tension into the cable and adjust the length can be performed continuously, the operation efficiency can be improved. Further, in each span, by using only the cable material and the bundle material as noticeable members, the structure is not conspicuous, and the design can be further improved.
[0017]
Furthermore, in the tension truss structure of the present invention, the tension member is bridged between the end fixing members as a set of two members, and the end members of the bundle are attached to both ends of the shaft member. The tension members are formed by two members screwed to the formed screw portions in opposite directions, and the tension members are respectively held by these end members. By the operation of the expansion and contraction mechanism of the bundle material, the end members move forward and backward in the directions opposite to each other with respect to the axial direction of the shaft member, and change the interval between the tension members held by the end member members. Thereby, the tension of the tension members can be adjusted.
[0018]
In such a configuration, by operating the extension / contraction mechanism of the bundle material, the end members are moved forward and backward in the opposite directions, and the distance between the cable materials formed as a pair is changed, so that one operation can be performed. Tension can be introduced and adjusted in the two cable members, and the working efficiency can be improved.
[0019]
Further, the curtain wall of the present invention is a tension truss structure according to any one of claims 1 to 6, and a wall material arranged along a direction in which the tension member of the tension truss structure is bridged, A connection member for connecting the wall material to the tension truss structure.
[0020]
According to the present invention, in the tension truss structure supporting the wall material of the curtain wall, the middle portion of the cable material bridged between the end fixing members can be fixed to the supporting member by the fixing means, so It is not necessary to cut the cable material, and it is not necessary to provide fixtures corresponding to the respective spans on both sides of the support member. Therefore, it is possible to reduce the labor for processing the cable material and the number of parts such as the fixture. In addition, since the number of fixtures and the like attached to the support member is reduced, the design of the curtain wall can be improved without making the structure noticeable.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a part of a curtain wall 1 according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.
1 and 2, a curtain wall 1 includes a plurality of glass panels 2 serving as wall materials, a tension truss structure 10 that supports these glass panels 2, and a connection between the glass panel 2 and the tension truss structure 10. And a connecting member 4.
[0022]
The curtain wall 1 forms an outer wall surface that separates the interior side and the exterior side of the stairwell of the building, and the exterior side of the building has a flat appearance composed of only the glass panel 2 and is provided on the interior side of the building. Supported by the tension truss structure 10. Each of the plurality of glass panels 2 is formed in a rectangular shape having a predetermined size, the respective glass panels 2 are connected to each other by a sealing material, and a corner where the four glass panels 2 are gathered is a DPG ( Dot point glazing) is supported. That is, through-holes (not shown) are provided at four corners of the glass panel 2, and each corner of the four glass panels 2 is fixed to one spider bracket 3 through the through-holes. The spider bracket 3 is a support having a shape such as a substantially X-shaped or H-shaped front surface, and the inside of the spider bracket 3 is connected to the tension truss structure 10 via a connecting member 4.
[0023]
The tension truss structure 10 is disposed along the outer wall surface of the curtain wall 1 and has an end truss post 20 as an end fixing member, an intermediate truss post 30 as a support member, and these end truss posts 20 and A cable member 11 as a tension member, which is a pair of two members, is continuously bridged between the intermediate truss columns 30. The end truss columns 20 and the intermediate truss columns 30 are erected at predetermined intervals (span L1) apart from each other by a distance corresponding to the width of three glass panels 2. One set of cable members 11 is extended in the horizontal direction at an interval of one glass panel 2 at a distance from each other. In the present embodiment, the cable member 11 is made of a PC steel strand (strand).
[0024]
The end truss pillars 20 are arranged at both ends of the cable material 11. In the present embodiment, both ends (only one end is shown in FIGS. 1 and 2) of the entire curtain wall 1 are shown. It is arranged at two places and is connected to the main pillar 5 as a building frame. The end truss pillars 20 extend in the vertical direction, and are made of three steel pipe pillars 21 erected in parallel to each other, and a steel pipe horizontal member 22 and a diagonal member 23 connecting these pillar members 21. Are truss columns that are welded together and formed integrally. Of these members, a bracket 24 for fixing the end of the cable 11 is welded to the horizontal member 22 arranged along the indoor and outdoor directions, and the end of the cable 11 is fixed via a fixture 25. ing.
[0025]
The intermediate truss columns 30 are erected at respective positions (only one position is shown in FIGS. 1 and 2) that divides the end truss columns 20 into a predetermined span L1. The intermediate truss pillar 30 is composed of two steel pipe pillars 31 serving as a support member main body that is erected at predetermined intervals in the indoor and outdoor directions, and a steel pipe diagonal member connecting these pillars 31. 33 are integrally formed by welding to each other. A truss bundle member 40 as a fixing member for fixing an intermediate portion of the cable member 11 to the intermediate truss column 30 is attached to the intermediate truss column 30 corresponding to the height position where the cable member 11 is provided. .
[0026]
FIGS. 3 and 4 are a perspective view showing a main part of the truss bundle 40 attached to the intermediate truss post 30 and a plan view showing the main part in an enlarged manner. 3 and 4, the truss bundle member 40 is fitted and fixed to a substantially cylindrical receiving bracket 34 as a receiving portion provided on the opposing side surfaces of the two column members 31 of the intermediate truss column 30. Have been. The two cable members 11 are held at their respective middle portions at both ends of the truss bundle member 40.
[0027]
Further, as shown in FIG. 2, one set of cable members 11 has two cross sections A where two cable members 11 intersect with each other, and the cable members 11 are arranged in parallel within the span L1. It is bridged with a parallel section B. At a boundary position between the intersection section A and the parallel section B, that is, at a position corresponding to a connection point between the adjacent glass panels 2, a bundle 50 for maintaining the erection shape of the two cable members 11 in a predetermined truss shape. Is arranged.
FIG. 5 is an enlarged plan view showing a main part of the bundle 50 that holds the cable 11 at a position midway along the span L1. In FIGS. 2 and 5, the two cable members 11 are held at both ends of the bundle member 50 in the middle of each.
[0028]
FIG. 6 shows a side view of the truss bundle 40 and the bundle 50. Since the bundle 50 has the same structure as the truss bundle 40, the truss bundle 40 will be described below, and only the reference numerals of the corresponding members or parts of the bundle 50 are shown in parentheses.
In FIG. 6, the truss bundle member 40 (50) includes a cylindrical shaft member 41 (51) and two end members 42 (52) screwed to both ends of the shaft member 41 (51). Have. These two end members 42 (52) have a groove 42A (52A) for holding the cable member 11 and a cover member 43 (53), and fix the cover member 43 (53) with bolts 44 (54). By doing so, the cable 11 is sandwiched and fixed between the groove 42A (52A) and the cover 43 (53). At the end of the groove 42A (52A), the cable 11 has a gentle curvature even when the cable 11 is held in a state of being inclined with respect to a direction orthogonal to the axial direction of the shaft 41 (51). Chamfer 42D (52D) is provided so as to be held.
[0029]
Further, on the inner periphery of both ends of the shaft member 41 (51) of the truss bundle member 40 (50) and on the shaft member 41 (51) side of the end member 42 (52), a female screw 41A (51A) and a male screw are screwed together. 42C (52C) is formed. The female screw 41A (51A) and the male screw 42C (52C) are formed with screw directions opposite to each other at both ends of the shaft member 41 (51). By rotating around, each end member 42 (52) moves forward and backward in directions opposite to each other in a direction along the axis of the shaft member 41 (51). That is, the shaft member 41 (51) is rotated in a predetermined rotation direction using a wrench or the like while the rotation of the end members 42 (52) holding the cable member 11 is restricted so as not to rotate. Then, each end member 42 (52) moves in a direction away from each other or in a direction approaching each other. By such forward and backward movements of the end members 42 (52) in the opposite directions, an expansion / contraction mechanism in which the entire length of the truss bundle 40 (50) expands / contracts is configured.
[0030]
Further, on the opposite side of the shaft member 41 of the end member 42, which is both ends of the truss bundle member 40, a protruding portion that fits into the receiving bracket 34 provided on the two column members 31 of the intermediate truss column 30. 42B are formed. Similarly, a protruding portion 52B is formed on the opposite side of the end member 52, which is both ends of the bundle member 50, to the shaft member 51, and the connecting member 4 is fitted to the protruding portion 52B on the outdoor side. .
Note that the tension setting means of the cable member 11 is constituted by the bundle member 50, and by operating the expansion and contraction mechanism of the bundle member 50, the distance between the pair of cable members 11 held by each end member 52 is increased. The tension is introduced into the cable member 11 and the tension of the cable member 11 can be adjusted by adjusting the interval.
[0031]
Next, a method of constructing the tension truss structure 10 of the present embodiment will be described.
After the end truss columns 20 and the intermediate truss columns 30 are erected, the cable members 11 formed to have a length corresponding to the distance between the two end truss columns 20 are arranged as a pair. Between the column members 31 of the intermediate truss column 30 corresponding to the height of the truss column 20 and temporarily placed and arranged over the two end truss columns 20. Then, both ends of the cable member 11 are fixed to brackets 24 of the end truss columns 20 via fixing members 25. Subsequently, at the position of the intermediate truss column 30, the protrusion 42B of the truss bundle 40 is fitted to the receiving bracket 34 between the two columns 31 while operating the expansion and contraction mechanism of the truss bundle 40, and the truss bundle The material 40 is attached. Further, a predetermined intermediate position in the length direction of the cable member 11 is inserted into the groove 42A of the end member 42 of the truss bundle member 40, the cover member 43 is attached, and the bolts 44 are tightened to fix the cable member 11.
[0032]
By the above operation, the end or the middle of the cable member 11 is fixed to the end truss column 20 or the intermediate truss column 30. Next, in each span L1, the cable material 11 intersects in the intersection section A, and a predetermined intermediate position of the cable material 11 at the boundary position between the intersection section A and the parallel section B is set to the groove of the end member 52 of the bundle 50. The cable member 11 is fixed by inserting the cover member 53 and inserting the cover member 53 and tightening the bolt 54. Further, tension is applied to the cable material 11 while operating the expansion and contraction mechanism of the bundle material 50 while extending the entire length of the bundle material 50 in a direction to widen the interval between the pair of cable materials 11. The cable member 11 to which a predetermined tension has been applied as described above functions as a tension truss structure 10 having a predetermined rigidity in the vertical and indoor and outdoor directions.
Thereafter, the connecting member 4 is fitted to the projecting portion 52B of the bundle member 50, and the spider bracket 3 and the glass panel 2 are attached to the connecting member 4, the outdoor column members 21, 31 of the end truss column 20, and the intermediate truss column 30, respectively. The curtain wall 1 is completed.
[0033]
According to this embodiment, the following effects can be obtained.
(1) The cable material 11 is cut for each span L1 by fixing an intermediate portion of the cable material 11 bridged between the end truss columns 20 to the intermediate truss column 30 via the truss bundle member 40. Since there is no need, and there is no need to provide fixing brackets and fixtures corresponding to the respective spans L1 on both sides of the intermediate truss column 30, it is possible to reduce the processing time of the cable material 11 and the number of parts such as fixtures. .
[0034]
(2) Since it is not necessary to provide fixing fixtures and the like for the intermediate truss column 30, the tension truss structure 10 looks smart, and the appearance through the glass panel 2 from the outside of the building and the design of the interior from the indoor side. Can be improved.
[0035]
(3) Since the truss bundle 40 is detachably attached between the two pillars 31 of the intermediate truss column 30, the truss bundle 40 can be attached later. In addition, the truss bundle 40 does not become an obstacle, and the workability can be improved.
[0036]
(4) The truss bundle 40 can be securely fixed by attaching and attaching the truss bundle 40 between the two pillars 31 of the intermediate truss column 30, and the truss bundle 40 can be detachably attached. By attaching, even if the cable material 11 and the truss bundle material 40 are damaged or broken during the construction, the members can be easily replaced.
[0037]
(5) By extending the entire length of the truss bundle 40 by the expansion and contraction mechanism of the truss bundle 40, the truss bundle 40 is easily attached to the receiving bracket 34 provided between the two pillars 31 of the intermediate truss pillar 30. And the work of mounting the truss bundle 40 can be performed quickly. In addition, since the shaft member 41 of the truss bundle 40 is rotated and the truss bundle 40 is simply extended, the truss bundle 40 can be attached, so that it is not necessary to fix the truss bundle 40 by welding or the like at the construction site, and the appearance of the joints of the members is beautifully finished. Can be.
[0038]
(6) In the middle of the span L1, by operating the expansion and contraction mechanism of the bundle material 50 for maintaining the erected shape of the cable material 11 in a predetermined truss shape, and expanding the interval between the cable materials 11, tension is introduced into the cable material 11, Since the tension setting means for adjusting is configured, the tension can be set without separately installing a turnbuckle or the like, and the number of members can be further reduced. Further, since the bundle material 50 itself has a tension setting function, the structure is not conspicuous, and the design can be further improved.
[0039]
(7) Since tension can be introduced and adjusted to the cable material 11 by the tension setting means constituted by the bundle material 50, an operation of attaching the bundle material 50 to the cable material 11 and an operation of introducing and adjusting the tension to the cable material 11 Can be performed continuously, and the working efficiency can be improved. Further, by changing the interval between the two cable members 11 configured as a pair, tension can be introduced and adjusted in the two cable members 11 in one operation, and the working efficiency can be further improved. .
[0040]
(8) The uniformity of the design of the tension truss structure 10 is achieved by attaching the truss bundles 40 and 50 having the same function and appearance to the intermediate truss column 30 and the midpoint of the span L1. Can be further improved.
[0041]
Although the best configuration and method for carrying out the present invention have been disclosed in the above description, the present invention is not limited to this.
That is, the present invention has been particularly shown and described with particular reference to particular embodiments, but without departing from the spirit and scope of the present invention with respect to the embodiments described above. Those skilled in the art can make various modifications in the shape, material, quantity, and other detailed configurations.
[0042]
For example, in the above-described embodiment, the end truss pillars 20 and the intermediate truss pillars 30 are arranged at intervals of a predetermined span L1, and the cable member 11 is laid horizontally between them. It is also possible to arrange the beam members as the skeleton at predetermined intervals (floor heights) in the height direction, and to extend the cable member vertically between these beam members.
The end truss column 20 and the intermediate truss column 30 are formed in a truss shape by welding members such as steel tube column members 21 and 31 and diagonal members 23 and 33, respectively. Building structures such as pillars and beams, walls, floors, and the like, and cubic, blind, and the like made of steel or wooden materials. The end truss column 20 is not limited to the one having three column members 21, but is formed of two column members, a horizontal member and a diagonal member, and has the same form as the intermediate truss column 30. It may be what was said.
Further, the present invention is not limited to disposing the end truss pillars 20 at both ends of the entire curtain wall 1, and one or two or more end fixing members are disposed at intermediate positions of the curtain wall, and the entire curtain wall is divided into two sections. Alternatively, the tension truss structure may be configured by dividing the support member into three or more sections, arranging the support members at predetermined intervals in each of these sections, and laying a cable material corresponding to the length of each section.
[0043]
Further, in the above-described embodiment, the tension truss structure 10 is applied as a structure for supporting the wall material of the curtain wall 1, but is not limited to this, and may be a curtain or a protective net used for a sound insulation wall, a sound absorption wall, or the like. It can also be applied as a structure that supports a net or the like used for the above. Further, in addition to the vertically formed wall-shaped structure, the present invention can be applied to a structure that supports a roof, a floor, and the like that are erected in a horizontal direction.
In the above-described embodiment, the truss bundle member 40 is fixed between the column members 31 of the intermediate truss column 30 by operating the expansion and contraction mechanism to extend the entire length. A bracket having a concave fitting portion opened upward is attached to the material, and the truss bundle material having a convex projecting portion formed at the end is fitted from above to the projecting portion so that the projecting portion is unevenly fitted to the fitting portion. It may be fixed by mounting or screws. In addition, the truss bundle member 40 is detachably attached to the intermediate truss pillar 30, but the present invention is not limited to this. A cable holding portion for holding the cable member is provided on the support member, and the cable member is directly supported by the cable holding portion. It may be fixed to a member.
[0044]
Further, in the above-described embodiment, in the end truss column 20, the end of the cable material 11 is fixed to the bracket 24 via the fixing tool 25. However, the present invention is not limited to this. It can also be fixed via possible members. In this way, it is possible to absorb a processing error at the time of processing the cable material and to accurately perform the tension truss structure. Further, such a turn buckle can be used also as a tension setting means, but since the turn buckle can be arranged only at the end of the cable material, it is sandwiched by an intermediate frame that fixes an intermediate portion of the cable material. Regarding the span, the turnbuckle cannot be applied, and the tension setting means using the bundle 50 described in the above embodiment is applied.
[0045]
Further, in the above-described embodiment, the truss bundle member 40 and the bundle member 50 constitute the expansion and contraction mechanism by screwing the end members to both ends of the shaft members 41 and 51 with reverse screws. However, the present invention is not limited to this, and it may be composed of two members that are screwed to each other. Like a hydraulic jack, the expansion and contraction mechanism is configured by adjusting the pressure using oil, water, gas, or the like. You may do it. However, according to the above-described embodiment, the two end members can move forward and backward without rotating just by rotating the shaft member, and have a simple structure, and constitute an easy-to-operate expansion and contraction mechanism, and , Fine adjustment of the extension length can be made possible.
[0046]
In addition, the cable material 11 is a cable material made of PC steel strand (strand), but is not limited thereto, and may be a steel wire formed from a single wire, a wire rope, or a flexible steel rod. Furthermore, the cable material 11 is not limited to being bridged in pairs, but may be one, or three or more cable materials may be one set.
Further, the spider bracket that supports the glass panel by the DPG (dot point glazing) method is not limited to a generally X-shaped or H-shaped front face, but may be an I-shaped or square-shaped bracket.
[0047]
【The invention's effect】
As described above, according to the tension truss structure and the curtain wall of the present invention, it is possible to reduce the processing time and the number of parts of the cable material and to improve the design.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a part of a curtain wall according to an embodiment of the present invention.
FIG. 2 is a plan view showing the embodiment.
FIG. 3 is a perspective view showing a main part of the intermediate truss column of the embodiment.
FIG. 4 is an enlarged plan view showing a main part of the truss bundle material of the embodiment.
FIG. 5 is an enlarged plan view showing a main part of the bundle of the embodiment.
FIG. 6 is a side view showing the truss bundle member and the bundle member of the embodiment.
[Explanation of symbols]
2 ... Glass panel as wall material, 4 ... Connecting member, 10 ... Tension truss structure, 11 ... Cable material as tension material, 20 ... End truss pillar as end fixing member, 30 ... Intermediate as support member Truss column, 31: pillar material as a support member main body, 40 ... truss bundle material as a fixing member, 41 ... shaft material, 42 ... end member, 50 ... bundle material, 51 ... shaft material, 51A ... female screw (screw part) ), 52 ... end member.

Claims

Both ends are fixed to the end fixing members arranged at predetermined intervals, and a tension material bridged between the end fixing members,
A support member disposed between the end fixing members,
Fixing means for fixing an intermediate portion of the tension member to the support member,
A tension truss structure comprising: a tension setting means for setting a tension of the tension member.

The support member is configured to include a plurality of support member main bodies arranged to face each other at a predetermined interval,
2. The tension truss according to claim 1, wherein the fixing unit is a fixing member detachably attached between the support member main bodies, and an intermediate portion of the tension member is fixed to the support member via the fixing member. 3. Structure.

The support member main body is provided with receiving portions at positions facing each other,
The fixing member has a shaft member and an end member screwed to an end portion of the shaft member, and the shaft member and the end member relatively rotate about the axis of the shaft member. The end member includes a telescopic mechanism that moves forward and backward in the axial direction of the shaft member,
The operation according to claim 2, wherein the extension of the entire length of the fixing member by engagement of the fixing member engages with the receiving portions of the support member main bodies, and the fixing member is attached to the support member. The tension truss structure as described.

Between the end fixing member and the support member, a bundle attached to the tension member is arranged,
The bundle has a shaft and an end member screwed to an end of the shaft, and the shaft and the end member are relatively rotated about the axis of the shaft, The end member includes a telescopic mechanism that moves forward and backward in the axial direction of the shaft member,
The tension member is held by an end member of the bundle in a state where an extension direction of the tension member intersects with an axial direction of the shaft member,
The tension setting means is configured by the bundle material, and by operating an expansion / contraction mechanism of the bundle material, the tension of the tension material can be adjusted by moving a position of the end member that holds the tension material. The tension truss structure according to any one of claims 1 to 3, which is configured.

A plurality of the support members are arranged at predetermined intervals from each other, and a bundle attached to the tension member is arranged between these support members.
The bundle has a shaft and an end member screwed to an end of the shaft, and the shaft and the end member are relatively rotated about the axis of the shaft, The end member includes a telescopic mechanism that moves forward and backward in the axial direction of the shaft member,
The tension member is held by an end member of the bundle in a state where an extension direction of the tension member intersects with an axial direction of the shaft member,
The tension setting means is configured by the bundle material, and by operating an expansion / contraction mechanism of the bundle material, the tension of the tension material can be adjusted by moving a position of the end member that holds the tension material. The tension truss structure according to any one of claims 1 to 4, which is configured.

The tension member is bridged between the end fixing members as two sets,
The end members of the bundle material are composed of two members screwed into mutually opposite thread portions formed at both ends of the shaft material, and the tension members are respectively held by these end members. And
The tension setting means formed of the bundle material is configured such that the end members move forward and backward in directions opposite to each other with respect to the axial direction of the shaft material by operating a telescopic mechanism of the bundle material. The tension truss structure according to claim 4 or 5, wherein a tension between the tension members is adjusted by changing an interval between the tension members held by the tension truss.

The tension truss structure according to any one of claims 1 to 6, a wall material arranged along a direction in which the tension member of the tension truss structure is bridged, and the tension truss structure. And a connecting member for connecting the curtain wall.