JP3766905B2 - Joint reinforcement structure for wooden buildings - Google Patents

Joint reinforcement structure for wooden buildings Download PDF

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JP3766905B2
JP3766905B2 JP2000136066A JP2000136066A JP3766905B2 JP 3766905 B2 JP3766905 B2 JP 3766905B2 JP 2000136066 A JP2000136066 A JP 2000136066A JP 2000136066 A JP2000136066 A JP 2000136066A JP 3766905 B2 JP3766905 B2 JP 3766905B2
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arm
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徳弘 石田
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徳弘 石田
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Description

【０００１】
【発明の属する技術分野】
本発明は、木造建物の仕口を補強するための構造（木造建物用仕口補強構造）に関する。
【０００２】
【従来の技術】
例えば、大地震が起こった場合、木造建物の仕口には大きな荷重が作用する。そのため、従来より仕口を補強する方策が種々採られている。
図２８に、従来の木造建物用仕口補強構造の一例（以下、第１の仕口補強構造と称する。実公昭５９−３０４４号等）を示す。
【０００３】
この第１の仕口補強構造は、梁３の端面にボルト孔１０１を設けるとともに、このボルト孔１０１と直交するように側面にアーム孔１０２を設け、柱１の側部にはボルト孔１０１の延長線上にボルト孔１０３を貫通穿設し、梁３のアーム孔１０２に、中央部にめねじ１０４を設けたアーム１０５を挿入するとともに、柱１のボルト孔１０３に座金１０６を介して胴長ボルト１０７を差込み、アーム１０５のめねじ１０４との間でねじ締めすることにより柱１と梁３とを緊結して仕口を補強するものとされている。
【０００４】
上記第１の仕口補強構造は、図２９に示すように、柱１と基礎体５（基礎コンクリート６，土台７）との突き合せ結合部（仕口）の補強にも利用可能である。なお、図２９において、１０９は基礎パッキンである。この基礎パッキン１０９によって生じた基礎コンクリート６と土台７との間の隙間からスパナ等を差し込んで胴長ボルト１０７を回して締め付けるものとされている。
【０００５】
また、図３０に従来の木造建物用仕口補強構造の別の例（以下、第２の仕口補強構造と称する。）を示す。
【０００６】
この第２の仕口補強構造は、柱１の側面にボルト１１１で固定されたＬ字形の保持部材１１２と、基礎体５（基礎コンクリート６，土台７）に下方部分が係止されかつ上端部３がナット１１６を介して保持部材１１２に止められた連結ボルト１１５とからなり、ナット１１６を回して締め付けることにより柱１と土台７とを緊結して仕口を補強するものとされている。
【０００７】
【発明が解決しようとする課題】
ところで、上記第１の仕口補強構造（図２８，２９）の場合、胴長ボルト１０７を回して梁３と柱１（又は柱１と基礎体５）とを圧接するものとされているので、柱１の側面１ｓに外板等を取付けてしまった後は胴長ボルト１０７を回して柱１と梁３（又は柱１と基礎体５）とを再度緊結するには外板等を取外さなければならず、手間が掛かる不都合を有する。なお、柱１と梁３とを再度緊結する作業は、木材（特に、水分を多く含んだ杉等）が乾燥するにつれて収縮（木痩せ）するので、建築してから何年か経過した後に行うことが望ましい。
【０００８】
また、図２８に示すように柱１の片側側面に梁３を突き合せ結合する場合には、上記第１の仕口補強構造は適用可能であるが、全ての差し口（二方差し、三方差し、四方差し等）には適用できず、適用範囲が狭い。
【０００９】
一方、上記第２の仕口補強構造（図３０）の場合、地震の縦揺れなどにはある程度の補強効果が認められるものの、横揺れに対しては補強効果をほとんど発揮せず柱１がほぞの付け根などから破損してしまうおそれがある。
【００１０】
なお、仕口補強構造が十分な強度をもっていたとしても、想像を絶する大地震が起きるなどして過大な横揺れが発生した場合、その一部が破壊されてしまうことは起こり得る。しかし、かかる場合でも梁が柱から離れてしまうことは家屋が完全に倒壊して居住する人間が押しつぶされてしまうことにつながるので、梁が柱から離れるのを防止する技術の確立が必要である。
【００１１】
本発明の目的は、適用範囲が広くて取扱いやすくしかも木痩せ等した場合に柱と梁（又は柱と基礎体）を簡単に再度緊結できる木造建物用仕口補強構造を提供することにある。また、想像を絶する大地震が起きるなどして過大な横揺れが発生した場合でも、梁が柱から離れてしまうのを阻止して、家屋の完全倒壊を防止できる木造建物用仕口補強構造を提供することも目的とする。
【００１２】
【課題を解決するための手段】
請求項１の発明は、柱と梁の突き合せ結合部を補強する木造建物用仕口補強構造であって、柱を横方向に貫通するとともに梁の突き合せ端面を所定長さだけ穿って連結用穴を形成し、梁の側面部に連結用穴と直交するようにアーム取付用穴を形成し、連結用穴に挿入されかつ基端部に柱と係止するための係止部が設けられた連結軸と、梁のアーム取付用穴に挿入されかつ長手方向中央部に連結軸を通すための通し穴が開けられた筒状のアームと、このアームを足場として連結軸を引っ張り可能な連結軸引張り手段とからなる仕口補強金具を備え、連結軸引張り手段が、連結軸に形成された係合傾斜面と、アーム内に移動可能に取付けられかつ係合傾斜面と摺接可能な押圧傾斜面を有する楔移動部材と、この楔移動部材を押圧傾斜面と係合傾斜面とを接触させつつ移動させて所定位置に保持可能な位置決め保持手段とを含み、両傾斜面の協働によって連結軸を引張り可能に形成されたことを特徴とする。
【００１３】
かかる発明の場合、梁に設けられた位置決め保持手段を作動させて楔移動部材を移動させると、当該楔移動部材の押圧傾斜面と連結軸の係合傾斜面との協動によって当該連結軸が引張られる。これにより、柱と梁とが緊結される。
【００１４】
このように、梁側の位置決め保持手段を作動することによって柱と梁とを緊結するので、木造建物完成後に柱と梁が木痩せ等した場合、柱に取付けられている外板等を取外すことなく当該柱と梁とを簡単に再度緊結できる。また、二方差し，三方差し，四方差しする場合などにも適用でき適用範囲が広い。
【００１５】
また、柱と梁の突き合せ結合部は、梁側のほぞが柱側のほぞ穴に差し込まれて両者が結合されているのが一般的であるが、強度的に弱いほぞを連結軸が直接補強するので、大地震が起こった場合でも当該結合部が破損するのを防止できる。さらに、柱と梁を強く緊結しても両部材の突き合せ結合部（仕口）には大きな偏心荷重が作用せず、結合強度を低下させてしまうようなことはない。
【００１６】
したがって、適用範囲が広くて取扱いやすくしかも木痩せ等した場合に柱と梁（又は柱と基礎体）を簡単に再度緊結できる。
【００１７】
請求項２の発明は、前記梁の連結用穴に挿入される前記連結軸部位に取付けられた本体およびこの本体に所定個数形成され前記梁の連結用穴内で開き可能な爪部からなる抜け止め用爪部材と、前記連結軸引張り手段によって前記連結軸が引っ張られた場合には抜け止め用爪部材と係合して爪部を開かせて前記梁の連結用穴の内面に喰い込ませ可能な作動部材とからなる梁抜け阻止体を設けた木造建物用仕口補強構造である。
【００１８】
かかる発明の場合、想像を絶する大地震が起きて、例えば連結軸引張り手段の楔移動部材が破壊された場合、連結軸とアームとは連結が解除されてしまう。このような事態が生じると、梁は連結軸による位置規制を受けなくなる。そのため、梁が地震の横揺れに応じて横移動しようとすることが起こり得るが、作動部材によって開かせられて梁の連結用穴の内面に喰い込んだ抜け止め用爪部材の爪部が連結部材と協働して当該梁の横移動を阻止する。したがって、想像を絶する大地震が起きるなどして過大な横揺れが発生した場合でも、梁が柱から離れてしまうのを阻止して家屋が完全に倒壊してしまうのを防止できる。
【００１９】
請求項３の発明は、前記梁の連結用穴に挿入される前記連結軸の後端部と前記柱との間に設けられた本体およびこの本体に所定個数形成され梁の連結用穴内で開き可能な爪部からなる抜け止め用爪部材と、連結軸の引張り状態が解除されて当該連結軸が梁の連結用穴から抜け出る方向へ移動しようとした場合には抜け止め用爪部材と係合して爪部を開かせて柱の突合せ端面に喰い込ませ可能な作動部材とからなる連結軸抜け阻止体を設けた木造建物用仕口補強構造である。
【００２０】
かかる発明の場合、想像を絶する大地震が起きて、例えば連結軸引張り手段の楔移動部材が破壊された場合、連結軸とアームとは連結が解除されてしまう。このような事態が生じると、連結軸が梁の連結用穴から抜け出るおそれがあるが、柱の突合せ端面に喰い込んだ抜け止め用爪部材の爪部が当該連結軸の横移動を阻止する。したがって、想像を絶する大地震が起きるなどして過大な横揺れが発生した場合でも、連結軸を介して柱と緊結されている梁が当該柱と離れてしまうのを阻止して家屋が完全に倒壊してしまうのを防止できる。
【００２１】
請求項４の発明は、柱と基礎体との突き合せ結合部を補強する木造建物用仕口補強構造であって、柱の突き合せ端面を所定長さだけ穿って連結用穴を形成するとともに、当該柱の所定側面部に連結用穴と直交するようにアーム取付用穴を形成し、柱の連結用穴に挿入されかつ下端部に基礎体側の植込ボルトと係止するための係合部が設けられた連結軸と、柱のアーム取付用穴に挿入されかつ長手方向中央部に連結軸を通すための通し穴が開けられた筒状のアームと、このアームを足場として連結軸を引っ張り可能な連結軸引張り手段とからなる仕口補強金具を備え、連結軸引張り手段が、連結軸に形成された係合傾斜面と、アーム内に移動可能に取付けられかつ係合傾斜面と摺接可能な押圧傾斜面を有する楔移動部材と、この楔移動部材を押圧傾斜面と係合傾斜面とを接触させつつ移動させて所定位置に保持可能な位置決め保持手段とを含み、両傾斜面の協働によって連結軸を引張り可能に形成されたことを特徴とする。
【００２２】
かかる発明の場合、柱の所定側面部（例えば、内側側面部）に設けられた位置決め保持手段を作動させて楔移動部材を移動させると、当該楔移動部材の押圧傾斜面と連結軸の係合傾斜面との協動によって当該連結軸が引張られる。これにより、柱と基礎体とが緊結される。なお、上記柱の所定側面部には、外板等が取付けられない側面部が選定されている。
【００２３】
このように、柱の所定側面部に設けられた位置決め保持手段を作動することによって柱と梁とを緊結するので、木造建物完成後に柱が木痩せ等した場合に当該両部材を簡単に再度緊結できる。また、連結軸が柱内に収容されているので、大地震などで柱が横揺れした場合でも連結軸には過大な曲げモーメントや引張力は作用せず破損しにくい。そのため、柱と基礎体との突き合せ結合部が大きく変形したり損壊するのを防止できる。さらに、柱と基礎体を強く緊結しても両部材の突き合せ結合部（仕口）には大きな偏心荷重が作用せず、結合強度が低下してしまうようなことはない。
【００２４】
したがって、取扱いやすく木痩せ等した場合には柱と基礎体を簡単に再度緊結できる。
【００２５】
請求項５の発明は、前記連結軸の係合部と前記基礎体との間に自在継手を介装し、この自在継手が、基礎体上で植込ボルトと相対変位させて係止可能な下部本体と、この下部本体に固定され前記連結軸の係合部を係止可能な係止部が設けられた上部本体とから形成された木造建物用仕口補強構造である。
【００２６】
かかる発明の場合、自在継手を用いて基礎体側の植込ボルトと柱側の仕口補強金具の連結軸とを偏心した状態で固定できる。したがって、請求項４記載の発明と同様な作用・効果を奏し得る他、一段と施工性の向上を図れる。
【００２７】
請求項６の発明は、前記位置決め保持手段と協働して前記楔移動部材の緊結位置を調節可能な緊結位置調節手段を設けた木造建物用仕口補強構造である。
【００２８】
かかる発明の場合、例えば連結軸の係合傾斜面の傾斜角度等を変更した場合に、連結強度が最大となるように楔移動部材の緊結位置を調節できる。ここで、緊結位置とは、連結軸引張り手段を用いて連結軸を引っ張って初回に梁と柱とを緊結した場合の楔移動部材の連結軸に対する位置である。
【００２９】
請求項７の発明は、前記連結軸を軸線方向にねじ結合された複数個の連結軸構成要素から形成した木造建物用仕口補強構造である。
【００３０】
かかる発明の場合、柱・梁の大きさや取付け条件などに応じて連結軸の長さを簡単に変更できる。したがって、一段と取り扱いやすくなる。
【００３１】
請求項８の発明は、前記連結軸の所定外周部分に刻みを付けて高摩擦面を形成した木造建物用仕口補強構造である。
【００３２】
かかる発明の場合、連結軸を組み付けたり運搬等する場合に、高摩擦面を手で持つようにすれば、手を滑らせて落としてしまうようなことがなくなるとともに、回しやすい。したがって、一段と取り扱いやすくなる。
【００３３】
請求項９の発明は、前記アームの外周部分に刻みを付けて高摩擦面を形成した木造建物用仕口補強構造である。
【００３４】
かかる発明の場合、アームが梁のアーム取付用穴にしっかり嵌合されるので、当該アームを足場として連結軸を一段と安定した状態で引っ張って緊結できる。
【発明の実施の形態】
以下、本発明の実施形態を図面を参照して説明する。
【００３５】
（第１の実施形態）
【００３６】
第１の実施形態に係る木造建物用仕口補強構造は、図１〜図８に示すように、柱１を横方向に貫通するとともに梁３の突き合せ端面を所定長さだけ穿って連結用穴２を形成し、梁３の側面部に連結用穴２と直交するようにアーム取付用穴４を形成し、連結軸１１とアーム２１と連結軸引張り手段３１とを有する仕口補強金具１０によって柱１と梁３とを緊結して両者（１，３）の突き合せ結合部（仕口）を補強可能に形成されている。
【００３７】
具体的には、梁３の突き合せ端面には、図１に示すように、ほぞ３ａが形成されており、このほぞ３ａは柱１の端面１ｕに形成されたほぞ穴１ａに差し込まれている。連結用穴２は、図４に示すように、梁３の長手方向軸線から上下方向に所定距離（例えば、０〜１５ｍｍ）だけ離れて形成されている。このように、梁３の端面中央から上下方向に離して連結用穴２を形成することにより、梁３などの木材中央部に自然的に入るひび割れを回避することができるとともに、連結軸１１に引張り力が加わっても梁３の自然ひびに関係なく引張り力を低下させることがなくなる。
【００３８】
また、連結用穴２は、梁３のほぞ３ａを貫通するものとされている。後に詳述する連結軸１１で、ほぞ３ａを直接補強するためである。この連結用穴２の内径は、穴開けに支障がでない範囲で連結軸１１との間隙が極力小さくなるように選定されている。これにより、梁３の断面欠落が少なくなり、かつ連結軸１１が座屈等するのを効果的に防止できる。
【００３９】
この実施形態では、直径１７ｍｍの連結軸１１に対して梁３側の連結用穴２の内径は２１ｍｍとされている。なお、柱１側の連結用穴２の内径は、後に詳述する直径１２ｍｍの皿ボルト９１に対して１５ｍｍとされている。また、アーム取付用穴４は、連結用穴２よりも大きな内径（例えば、３０．５ｍｍ）を有するものとされている。ちなみに、アーム取付用穴４に嵌挿されるアーム２１は、直径が３０ｍｍとされている。
【００４０】
次に、仕口補強金具１０は、連結用穴２に挿入されかつ基端部１２に柱１と係止するための係止部（１３）が設けられた連結軸１１と、梁３のアーム取付用穴４に挿入されかつ長手方向中央部に連結軸１１を通すための通し穴２２が開けられた筒状のアーム２１と、このアーム２１を足場として連結軸１１を引っ張り可能な連結軸引張り手段３１とから形成されている。なお、仕口補強金具１０の各構成部品（１１，２１，３１等）は鋼鉄製とされている。以下、各構成部品（１１，２１，３１等）について説明する。
【００４１】
まず、連結軸１１は、図５（Ａ），（Ｂ）に示すように、長寸（例えば、全長Ｌ＝３１１〜３６０ｍｍ）で丸軸形状とされている。この連結軸１１の基端部１２には、係止部としてめねじ部１３が螺設されている。この実施形態では、連結軸１１は、梁３側の連結用穴２に挿入されている。
【００４２】
ここで、連結軸１１を、図１４に示すように、軸線方向にねじ結合された複数個（この実施形態では３個）の連結軸構成要素（１１Ａ，１１Ｂ，１１Ｃ）から形成してもよい。
【００４３】
なお、図１４中、１６ａ，１６ｂ，１６ｃは、連結軸構成要素（１１Ａ，１１Ｂ，１１Ｃ）の後端部に螺設されためねじ部である。いずれも図５（Ａ），（Ｂ）に示す連結軸１１のめねじ部１３と同一形状とされている。また、１７ａ，１７ｂは、連結構成要素（１１Ｂ，１１Ｃ）の先端部に螺設されたおねじ部である。
【００４４】
このように、連結軸１１を分割可能とすることにより、柱１・梁３の大きさや取付け条件などに応じて連結軸１１の長さを簡単に変えることができ、一段と取り扱いやすくなる。
【００４５】
柱１側の連結用穴２には、図１に示すように、連結軸１１のめねじ部１３と連結された皿ボルト９１が挿入されている。皿ボルト９１は、柱１の幅寸法相当の長さを有するものとされている。そして、皿ボルト９１のおねじ部９１ｓは、連結軸１１のめねじ部１３に先端部がマーキング線Ｍ２に達するまでねじ込まれている。
【００４６】
皿ボルト９１の頭部９１ｈは、円板状の座金９２を介して柱１の側面１ｓに圧接されている。これにより、連結軸１１の基端部１２は、柱１に固定されている。ここで、「固定されている」とは、連結軸１１の柱１から離隔する方向への移動（引張りによる移動を除く）が当該柱１によって規制されている状態を意味する。座金９２は、例えば直径が６０ｍｍで、厚さが１０ｍｍとされている。
【００４７】
なお、皿ボルト９１の頭部９１ｈは、座金９２に完全に収容されており、柱１の側面１ｓから突出しないものとされている。これにより、例えば柱１の側面１ｓに外板を取付ける場合にも、皿ボルト９１の頭部９１ｈが当たる外板部分を削り取るような作業はしなくてすみ、作業効率を高めることができる。また、座金９２が円形であるので、皿ボルト９１を介して大きな横方向荷重を受けた場合でも、柱１にはほとんど損傷を与えない。座金９２自体も破損しない。
【００４８】
また、連結軸１１の基端部１２の外周には、図５（Ａ）に示すように、マーキング点Ｍ１，マーキング線Ｍ２が記されている。マーキング点Ｍ１は、連結軸１１の係合傾斜面３２の縦軸線回り方向の位置確認用である。また、マーキング線Ｍ２は、柱１に対する位置確認用である。
【００４９】
通常は、図１に示すように、柱１側の皿ボルト９１に連結軸１１をマーキング線Ｍ２が柱１の突き合せ端面１ｕと整合するまでねじ込むことにより、皿ボルト９１に連結軸１１を正確に接続できる。なお、梁３のアーム取付用穴４の穿設位置を変えた場合にはマーキング線Ｍ２を目印として連結軸１１の軸線方向位置を調節できる。しかも、柱１と梁３の締め付け調節および楔移動部材３５の引き方も寸法を出さなくとも容易に行える。
【００５０】
次に、アーム２１は、図６（Ａ），（Ｂ）に示すように、円筒形状とされている。アーム２１の通し穴２２の内径は、連結軸１１の直径（１７ｍｍ）よりも若干大きい１７．５ｍｍとされている。また、このアーム２１の図６（Ａ）中右側部分には、大径めねじ部２３が形成されており、同図中左側部分には小径めねじ部２４が形成されている。この大径めねじ部２３には、後に詳述する位置決め保持手段の位置調節用ねじ部材４３が螺合される。また、アーム２１の小径めねじ部２４には連結軸係止用の止めねじ４５が螺合される。
【００５１】
さらに、アーム２１の図６（Ａ）中右端面には、当該アーム２１を軸線回りに回動するための調節用溝２５が形成されている。この調節用溝２５にドライバーの先端等を入れて回すことにより、通し穴２２の軸線回り方向の位置を調節できる。なお、アーム２１の通し穴２２の縁部は、連結軸１１が挿入しやすいように面取りＣがされている。
【００５２】
なお、アーム２１の端面は、図２に示すように、ウレタンフォーム１９やキャップ（図示省略）などによって外部から遮断されるので、結露等が生じることはない。そのため、錆が発生せず長期間にわたって仕口補強機能を発揮する。ウレタンフォーム１９やキャップであれば、柱１と梁３を再度緊結する場合にも簡単に取り除くことができ便利である。
【００５３】
連結軸引張り手段３１は、図１に示すように、連結軸１１に形成された係合傾斜面３２と、アーム２１内に移動可能に取付けられかつ係合傾斜面３２と摺接可能な押圧傾斜面３６を有する楔移動部材３５と、この楔移動部材３５を押圧傾斜面３６と係合傾斜面３２とを接触させつつ移動させて所定位置に保持可能な位置決め保持手段（４３）とを含み、両傾斜面（３２，３６）の協働によって連結軸１１を引張り可能に形成されている。
【００５４】
ここに、係合傾斜面３２は、図５（Ａ），（Ｂ）に示すように、連結軸１１の先端部近くの部位を先端部側が傾斜面となるように両側から同一長さだけ平面状に削ることにより形成されている。すなわち、こうして形成された肉薄部１５の先端部側に２つの係合傾斜面（３２，３２）が形成されている。
【００５５】
楔移動部材３５は、図７（Ａ），（Ｂ），（Ｃ）に示すように、二股状に突出された一対の押圧部（３７，３７）を有しており、両押圧部（３７，３７）の先端上部には押圧傾斜面（３６，３６）が形成されている。この楔移動部材３５は、両押圧部（３７，３７）の間に連結軸１１の肉薄部１５を挿入可能に形成されている。この実施形態では、押圧傾斜面３６の縦軸線に対する傾斜角度は３０°とされている。
【００５６】
なお、楔移動部材３５の端部には、取出し用のめねじ部３９が螺設されている。修理・点検等のためにアーム２１内に入れられた楔移動部材３５を外へ取り出す場合には、図７（Ｃ）で２点鎖線で示すように長寸のボルト８１をアーム２１内に差し込んで楔移動部材３５のめねじ部３９と螺合させ、その状態でボルト８１を引き出せばよい。また、楔移動部材３５の端面には、図７（Ｂ）に示すように、押圧部（３７，３７）の軸線方向回りの位置を確認するためのマーキング点Ｍ３が記されている。
【００５７】
位置決め保持手段は、図１に示すように、アーム２１の大径めねじ部２３に回転自在に螺合した位置調節用ねじ部材４３から形成されている。ここに、この実施形態では、一段と確実に連結軸１１を図２に示す初回引張り位置Ｐ１および図３に示す再度引張り位置Ｐ２に保持できるように、止めねじ４６で連結軸１１を係止するものとされている。
【００５８】
止めねじ４６は、アーム２１の小径めねじ部２４に回転自在に螺合して先端部が連結軸１１の位置決め用凹部（４４，４５）と当接した位置で係止可能に形成されている。ここで、図１中上方の位置決め用凹部４４は、初回に連結軸１１を引張った位置（初回引張り位置Ｐ１）に係止するためのもので、下方の位置決め用凹部４５は再度連結軸１１を引張った位置（再度引張り位置Ｐ２）に係止するためのものである。
【００５９】
この止めねじ４６によって、連結軸１１を初回引張り位置Ｐ１や再度引張り位置Ｐ２に保持した状態で、楔移動部材３５をアーム２１内から取り出して修理・点検した後、アーム２１内へ戻して連結軸１１を再び保持できる。したがって、止めねじ４６は楔移動部材３５のメンテナンスにも役立つ。
【００６０】
なお、上記仕口補強金具１０の構造強度を確認するために、連結軸１１の基端部１２とアーム２１とをチャック等で保持して引張り試験したところ、約１０７，０００Ｎの荷重まで耐えられることが判明した（群馬工業試験場の試験結果による）。
【００６１】
次に、この実施形態の作用を図面を参照しながら説明する。
【００６２】
仕口補強金具１０の位置調節用ねじ部材４３を、図１に示すように、六角レンチ８２を用いて回転させて内方へ移動させると、楔移動部材３５は押されて内方へ移動して押圧傾斜面３６が連結軸１１の係合傾斜面３２と接触する。次に、その状態で位置調節用ねじ部材４３を更に回転させると、楔移動部材３５は押圧傾斜面３６を係合傾斜面３２と摺接させつつ内方へ移動する。これにより、連結軸１１は、図１に示す初期位置Ｐ０から図２に示す位置（初回引張り位置Ｐ１）まで引張られて位置決め用凹部４４がアーム２１の小径ねじ部２４と整合する位置に位置決めされる。
【００６３】
次に、その状態で、止めねじ４６をアーム２１の小径めねじ部２４に螺合させ先端部が位置決め用凹部４４と当接するまで回転する。これにより、連結軸１１は楔移動部材３５および位置調節用ねじ部材４３によって所定長さだけ引張られた位置に保持されるとともに、止めねじ４６によっても係止される。この際、楔移動部材３５の押圧傾斜面３６は、連結軸１１の係合傾斜面３２全体と当接しているので、確実に連結軸１１を初回引張り位置Ｐ１に保持できる。
【００６４】
これにより、柱１と梁３とが緊結される。このように、梁３側の位置決め保持手段（位置調節用ねじ部材４３）を作動することによって柱１と梁３とを緊結するので、図３に示すように、木造建物完成後に柱１と梁３が木痩せした場合に、連結軸１１を再度引張り位置Ｐ２まで引張って当該両部材（１，３）を簡単に再度緊結できる。
【００６５】
また、アーム２１は梁３に対して固定されており、アーム２１内の楔移動部材４３を移動させることにより、アーム２１を足場として基端部１２側が柱１に固定された連結軸１１を引張る構成とされているので、梁３は偏心荷重を受けず柱１と緊結できる。
【００６６】
また、連結軸１１が梁３および柱１内に収容されているので、大地震などで梁３が揺れた場合でも連結軸１１には大きな曲げモーメントや引張り力が作用しないので破損しにくく、両者（１，３）の突き合せ結合部を保護できる。また、強度的に弱い梁３のほぞ３ａを連結軸１１が直接補強するので、当該結合部が破損するのを防止できる。
【００６７】
したがって、適用範囲が広くて取扱いやすくしかも木痩せ等した場合に柱１と梁３（又は柱１と基礎体５）を簡単に再度緊結できる。
【００６８】
また、アーム２１と組み合わされた連結軸１１は、梁３に完全に収容されるので、仕口補強金具１０を梁３内に収容した状態で運搬できる。したがって、運搬時の仕口補強金具１０の損傷を効果的に防止できる。
【００６９】
また、長寸の連結軸１１に比較的短寸の皿ボルト９１を接続して柱１と梁３とを緊結するので、柱１の端面１ｓ側には皿ボルト９１を入れるだけの空きスペースがあればよく、取付作業がしやすい。また、皿ボルト９１は市販品を使用できコストダウンを図れる。
【００７０】
また、楔移動部材３５だけを焼入れ等することによって強度を高めるだけでも、仕口補強金具１０の引張り強度を一段と高めることができる。
【００７１】
さらに、建物を柱１や梁３が見える真壁工法で構築した場合、上記仕口補強金具１０の連結軸１１やアーム２１等は柱１や梁３に収容されているので見苦しくなく、木本来の美しさや景観を損なわない。
【００７２】
上記仕口補強金具１０は、神戸大震災クラスの地震にもその機能を十分に発揮すると考えるが、将来、想像を絶する大地震が起きて過大な横揺れが発生した場合には、一部（例えば、楔移動部材３５）が破損して機能（柱１と梁３とを緊結する機能）を発揮できない事態が生じることがあり得る。
【００７３】
しかし、かかる事態が発生した場合でも、梁３が柱１から離れてしまうのを阻止して、家屋の完全倒壊を防止できるように、この実施形態では梁抜け阻止体１２１や連結軸抜け阻止体１３１を設けている。ここで、家屋の完全倒壊を防止できれば、居住者が家屋の中で押しつぶされるのを回避するスペースを確保できる確率を高められる。
【００７４】
梁抜け阻止体１２１は、図１５および図１６に示すように、連結軸１１に係合された抜け止め用爪部材１２２と作動部材１２５とを有し、楔移動部材３５が破損するなどして連結軸１１とアーム２１との連結が解除されてしまった場合でも、梁３の連結用穴２の内面に喰い込んだ抜け止め用爪部材１２２の爪部１２４によって当該梁３が柱１から離れるのを阻止可能に形成されている。
【００７５】
具体的には、抜け止め用爪部材１２２は、図１６に示すように、梁３の連結用穴２に挿入される連結軸１１部位に取付けられた本体１２３と、この本体１２３に所定個数形成され梁３の連結用穴２内で開き可能な所定個数の爪部１２４から形成されている。
【００７６】
本体１２３は、円筒状に形成されており、上記連結軸１１部位に軸線方向に移動可能かつ軸線回りに回動可能に装着されている。爪部１２４は、本体１２３と一体的に複数個形成されており、それぞれ独立して基端部１２４ａを固定端として連結軸１１から離れる方向に撓み変形可能かつ弾性復元力によって元の位置に復帰可能に形成されている。
【００７７】
各爪部１２４の基端部１２４ａの内面側には第１ストッパ溝１２７と第２ストッパ溝１２８とが形成されている。なお、抜け止め用爪部材１２２は、弾性に富んだ金属材料から形成されている。
【００７８】
作動部材１２５は、連結軸引張り手段３１によって連結軸１１が引っ張られた場合には抜け止め用爪部材１２２と係合して各爪部１２４を開かせて梁３の連結用穴２の内面に喰い込ませ可能に形成されている。具体的には、作動部材１２５は、連結軸１１の所定外周部分に一体的に設けられている。この作動部材１２５は、テーパー部１２６と、このテーパー部１２６よりも前方に所定距離離れて形成されたリング状の突起１２９とを有している。
【００７９】
連結軸引張り手段３１による連結軸１１の引張りが開始されると、作動部材１２５がアーム２１へ向けて前進し、爪部材１２２をアーム２１に押し付ける。その状態で、作動部材１２５は、さらに前進して、そのテーパー部１２６が抜け止め用爪部材１２２の各爪部１２４の内面と摺接して当該各爪部１２４を開かせる。そして、連結軸１１が、図１７に示すように、初回引張り位置Ｐ１まで引っ張られると、作動部材１２５の突起１２９が抜け止め用爪部材１２２の第１ストッパ溝１２７に嵌挿される。
【００８０】
なお、再緊結するために、連結軸引張り手段３１によって連結軸１１を再度引張り位置Ｐ２まで引っ張ると、作動部材１２５は抜け止め用爪部材１２２の各爪部１２４を開かせた状態で前進して突起１２９が抜け止め用爪部材１２２の第２ストッパ溝１２８に嵌挿される。
【００８１】
ここで、想像を絶する大地震によって、例えば連結軸引張り手段３１の楔移動部材３５が破損し、連結軸１１とアーム２１との連結が解除されてしまった場合でも、梁３の連結用穴２の内面に食い込んだ抜け止め用爪部材１２２と連結軸１１との協働によって、当該梁３が柱１から離れてしまうのを阻止できる。この際、抜け止め用爪部材１２２は、突起１２９および第１のストッパ溝１２７によって図１７中右方向へ移動するのが規制されているので、確実に梁３の横方向（図１７中右方向）への移動を阻止できる。したがって、梁３が柱１から離れてしまうのを阻止して、家屋の完全倒壊を防止できる。
【００８２】
次に、連結軸抜け阻止体１３１は、図１５および図１８に示すように、梁３の連結用穴２に挿入される連結軸１１の基端部１２と柱１との間に設けられた本体１３３およびこの本体１３３に所定個数形成され梁３の連結用穴２内で開き可能な爪部１３４からなる抜け止め用爪部材１３２と、連結軸１１の引張り状態が解除されて当該連結軸１１が梁３の連結用穴２から抜け出る方向（図１８中左方向）へ移動しようとした場合には抜け止め用爪部材１３２と係合して爪部１３４を開かせて柱１に喰い込ませ可能な作動部材１３５とから形成されている。
【００８３】
具体的には、爪部材１３２の本体１３３は、円筒状に形成されており、連結軸１１の基端部１２に螺合した皿ボルト９１に軸線方向移動可能かつ軸線回りに回動可能に装着されている。爪部１３４は、本体１３３と一体的に複数個形成されており、それぞれ独立して基端部１３４ａを固定端として連結軸１１から離れる方向に撓み変形可能かつ弾性復元力によって元の位置に復帰可能に形成されている。なお、抜け止め用爪部材１３２は、弾性に富んだ金属材料から形成されている。
【００８４】
作動部材１３５は、連結軸１１の基端部１２に螺合した皿ボルト９１に軸線方向に相対移動可能かつ軸線回りに回動可能に装着されている。この作動部材１３５は、テーパー部１３６を有しており、当該テーパー部１３６は抜け止め用爪部材１３２の各爪部１３４の内面と摺接可能に形成されている。
【００８５】
ここで、想像を絶する大地震によって、例えば連結軸引張り手段３１の楔移動部材３５が破損して連結軸１１とアーム２１との連結が解除されてしまった場合でも、図１９に示すように、柱１に喰い込んだ抜け止め用爪部材１３２によって連結軸１１が柱１および梁３の各連結用穴２から抜け出ようとするのを阻止できる。したがって、連結軸１１を介して柱１と緊結された梁３が当該柱１と離れてしまうのを阻止して、家屋が完全倒壊されてしまうのを防止できる。これにより、居住者が倒壊した家屋の中で押しつぶされるのを回避するスペースを確保できる確率を高められる。
【００８６】
なお、上記実施形態では、連結軸１１の基端部１２を皿ボルト９１を用いて柱１に固定したが、図２０および図２１に示すように、固定用アーム２６を用いて固定してもよい。ここに、連結軸１１の基端部１２には、係止部としてのおねじ部１８が螺設されている。
【００８７】
一方、固定用アーム２６は、図２１に示すように、柱１側の連結用穴２と直交するように当該柱１の側面１ｔに穿設された取付用穴２７に嵌挿されており、その軸線方向中央部には連結軸１１のおねじ部１８が螺合可能なめねじ部２８が螺設されている。
【００８８】
したがって、固定用アーム２６を柱１の取付穴２７に嵌挿し、その状態で連結軸１１のおねじ部１８をアーム２６のめねじ部２８に螺合させることにより、連結軸１１の基端部１２は柱１に固定される。
【００８９】
かかる構成とすることにより、柱１の突合せ面１ｕと反対側の側面１ｓからでは皿ボルト９１等を挿入できない場合でも連結軸１１を柱１に固定できる。
【００９０】
また、柱１の側面１ｓ側から見た外観上の美観も向上できる。
【００９１】
また、図２１中、２点鎖線で示すように、柱１の側面１ｔ側に梁（３）を連結する場合には、固定用アーム２６の図中左側面に連結軸（１１）のおねじ部（１８）が螺合可能なめねじ部２９を設ければ、梁（３）を柱１に緊結できる。この際は、固定用アーム２６は梁（３）によって内部に隠れてしまうので、柱１の外観上の美観を一段と向上できる。
【００９２】
なお、上記した木造建物用仕口補強構造は、図８に示すように、柱１の両側面に梁３を突き合せ結合する場合や三方差し、四方差しなどにも適用でき適用範囲が広い。この場合、各梁３の連結用穴２に挿入される仕口補強金具１０の連結軸１１の基端部１２は、互いに両ねじ部材８４を用いて連結される。したがって、各連結軸１１の基端部１２は、間接的に柱１内に固定されることになる。
【００９３】
また、上記した連結軸１１の基端部１２を両ねじ部材８４にねじ結合する場合、マーキング線Ｍ２を柱１の側面（１ｓ，１ｕ）に合わせ、かつマーキング点Ｍ１から挿入姿勢を調整することにより、円滑に各仕口補強金具１０をセットできる。
【００９４】
ここで、上記柱１の両側面に梁３を突き合せ結合する場合、一方の梁３の緊結には上記した仕口補強金具１０を用い、他方の梁３の緊結には固定式の仕口補強金具１０Ｄを用いてもよい。
【００９５】
固定式の仕口補強金具１０Ｄは、梁３の連結用穴２に挿入されかつ基端部１２ｄに柱１と係止するための係止部（めねじ部１３ｄ）が設けられた連結軸１１Ｄと、梁３のアーム取付用穴４に挿入されかつ長手方向中央部に連結軸１１Ｄの先端ねじ部１４ｄと螺合するためのねじ穴２１ｈが形成された筒状のアーム２１とからなる。なお、各連結軸（１１，１１Ｄ）に、図２３（Ａ）に示すように、上記した抜け止め用阻止体１２１や連結軸抜け止め阻止体１３１を設けてもよい。なお、同図（Ｂ）に示すように、抜け止め用阻止体１２１の取付向きを逆にしてもよい（図１５〜図１７でも同様）。
【００９６】
なお、上記した木造建物用仕口補強構造（仕口補強金具１０）を利用して、図２５に示すように、例えば十字めちいれ１４２や金物十字めち（図示省略）などを介して同一軸線上に接合された一方部材１４０Ａと他方部材１４０Ｂとを緊結できる。ここで、連結軸１１は、一方部材１４０Ａおよび他方部材１４０Ｂの各連結用穴２を貫いている。この連結軸１１の図２５中左端部は、固定用アーム１４３と係止されかつ同図中右端部はアーム２１に係止されている。
【００９７】
固定用アーム１４３は、連結軸１１の同図中左端部１２（係止溝１２ｍ）を固定可能に形成されている。すなわち、固定用アーム１４３の軸線方向中央部には、図２６に示すように、連結軸１１の左端部１２を通し可能な通し穴１４４が貫通穿設されている。また、アーム１４３の端面には、めねじ部１４５が通し穴１４４に開口するように形成されており、当該めねじ部１４５には止めねじ１４６が螺合している。止めねじ１４６を締め方向に回転させて、その先端部を連結軸１１の係止溝１２ｍと当接させることにより、連結軸１１の左端部１２はアーム１４３に固定される。
【００９８】
これにより、連結軸引張り手段３１を用いて連結軸１１をアーム２１へ向けて引っ張ることにより、一方部材１４０Ａと他方部材１４０Ｂとは緊結される。
【００９９】
なお、図２７に示すように、係止溝１２ｍを軸線方向に所定間隔で複数個設けるとともに、各係止溝１２ｍの軸線方向位置を規制する位置規制機構〔係止用玉（１４８Ａ，１４８Ｂ）、係止用玉（１４８Ａ，１４８Ｂ）を係止溝１２ｍへ押し付ける押圧ねじ（１４９Ａ，１４９Ｂ）およびスプリング１４９Ｓ〕を設けてもよい。
【０１００】
（第２の実施形態）
【０１０１】
第２の実施形態は図９に示される。
【０１０２】
第２の実施形態に係る木造建物用仕口補強構造は、柱１の突き合せ端面を所定長さだけ穿って連結用穴２を形成するとともに、当該柱１の所定側面部に連結用穴２と直交するようにアーム取付用穴４を形成し、柱１の連結用穴２に挿入されかつ下端部に基礎体５側の植込ボルト８と係止するための係合部（１４）が設けられた連結軸１１と、柱１のアーム取付用穴４に挿入されかつ長手方向中央部に連結軸１１を通すための通し穴２２が開けられた筒状のアーム２１と、このアーム２１を足場として連結軸１１を引っ張り可能な連結軸引張り手段３１とからなる仕口補強金具１０を備え、連結軸引張り手段３１が、連結軸１１に形成された係合傾斜面３２と、アーム２１内に移動可能に取付けられかつ係合傾斜面３２と摺接可能な押圧傾斜面３６を有する楔移動部材３５と、この楔移動部材３５を押圧傾斜面３６と係合傾斜面３２とを接触させつつ移動させて所定位置に保持可能な位置決め保持手段（４３）とを含み、両傾斜面（３２，３６）の協働によって連結軸１１を引張り可能に形成されている。
【０１０３】
なお、第１の実施形態（図１〜図８、図１４〜図２４）の場合と共通する構成要素については同一の符号を付し、その説明を簡略化又は省略する。
【０１０４】
連結軸１１の基端部１２には、係合部としておねじ部１４が形成されている。この連結軸１１のおねじ部１４は、基礎コンクリート６に植設された植込ボルト８とナット部材８５を介して固定されている。
【０１０５】
かかる構成では、柱１の所定側面部（例えば、内側側面部）に設けられた位置決め保持手段（位置調節用ねじ部材４３）を作動させて楔移動部材３５を移動させると、当該楔移動部材３５の押圧傾斜面３６と連結軸１１の係合傾斜面３２との協動によって当該連結軸１１が引張られる。これにより、柱１と基礎体５とが緊結される。このように、柱１の所定側面部（例えば、内側側面部）に設けられた位置決め保持手段（４３）を作動することによって柱１と梁３とを緊結するので、木造建物完成後に柱１が木痩せ等した場合に当該両部材（１，３）を簡単に再度緊結できる。
【０１０６】
さらに、連結軸１１が柱１内に収容されているので、大地震などで柱１が横揺れした場合でも連結軸１１には大きな曲げモーメントや引張力が作用しないので、破損を最小限に抑えることができる。さらにまた、柱１と基礎体５を強く緊結しても両部材（１，５）の突き合せ結合部（仕口）には大きな偏心荷重が作用せず、結合強度が低下してしまうようなことはない。
【０１０７】
したがって、取扱いやすくしかも木痩せ等した場合には柱１と基礎体５を簡単に再度緊結できる。
【０１０８】
また、柱１側の位置調節用ねじ部材４３を回すことにより柱１と基礎体５とを緊結するので、図１５に示す従来例と異なり基礎コンクリート６と土台７との間に基礎パッキン９を介装して間隙を設ける必要はない。したがって、土台７が基礎コンクリート６に密着されている基礎体５でも使用でき、施工性を一段と向上できる。もとより、風通しをよくするために、基礎パッキン９を介装することは自由である。
【０１０９】
（第３の実施形態）
【０１１０】
第３の実施形態は図１０〜図１３に示される。
【０１１１】
第３の実施形態に係る木造建物用仕口補強構造は、連結軸１１の係合部（１４）と基礎体５との間に自在継手５０を介装し、この自在継手５０が、基礎体５上で植込ボルト８と相対変位させて係止可能な下部本体５１と、この下部本体５１に固定され連結軸１１の係合部（１４）を係止可能な係止部が設けられた上部本体６１とから形成されている。
【０１１２】
下部本体５１は、図１１（Ａ），（Ｂ）に示すように、円板状に形成されており、その中央部から外周部へ向けて伸延するように長穴５２が形成されている。長穴５２は、基礎体５側の植込ボルト８を通し可能に形成されている。したがって、下部本体５１は、長穴５２に植込ボルト８を通した状態で平面上を所定範囲内で任意方向に変位可能となる。なお、下部本体５１の外周部には、上部本体６１を固定するためのねじ穴５３が所定個数設けられている。
【０１１３】
一方、上部本体６１は、図１２（Ａ），（Ｂ），（Ｃ）に示すように、厚肉円板状に形成されており、その中央部には係止用ねじ穴６６が形成されている。この上部本体６１の係止用ねじ穴６６には、図１３に示すように、両ねじ部材８６が螺合しており、両ねじ部材８６はナット部材８５を介して連結軸１１のおねじ部１４と接続されている。
【０１１４】
なお、連結軸１１のおねじ部１４を上部本体６１の係止用ねじ穴６６と合わせることにより、両ねじ部材８６およびナット部材８５を用いることなく、直接、連結軸１１のおねじ部１４を上部本体６１の係止用ねじ穴６６に螺合して接続してもよい。また、連結軸１１の基端部１２に上記両ねじ部材８６と螺合可能なめねじ部（図示省略）を形成することにより、ナット部材８５を用いることなく連結軸１１と自在継手５０とを両ねじ部材８６を介して接続できる。
【０１１５】
また、上部本体６１には、側面の所定部分および下部本体５１側の平面の所定部分に向けて開口した内部空間６２が設けられている。この内部空間６２を通して、図１３に示すように、下部本体５１の上面で植込ボルト８の先端部と螺合したナット８９を回して締付け可能かつ締付け解除可能とされている。この上部本体６１は、ねじ通し穴６３に嵌挿されたボルト６３ｓを下部本体５１のねじ穴５３に螺合させて締め付けることにより固定されている。
【０１１６】
かかる構成では、自在継手５０を用いて基礎体５側の植込ボルト８と柱１側の仕口補強金具１０の連結軸１１とを偏心した状態で固定できる。したがって、一段と施工性の向上を図れる。
【０１１７】
なお、上記した第１〜第３の実施形態において、位置決め保持手段（４３）と協働して楔移動部材３５の緊結位置を調節可能な緊結位置調節手段（４７）を設けてもよい。具体的には、緊結位置調節手段は、図２４に示すように、楔移動部材３５に形成されためねじ部３９に螺合し先端部がアーム２１内の連結軸１１部分と当接可能かつ後端部が位置調節用ねじ部材４３と当接可能な緊結位置調節ねじ４７から形成されている。
【０１１８】
ここで、位置調節用ねじ部材４３を六角レンチ８２で締め方向へ回すと、当該ねじ部材４３は回りつつ前進する（すなわち、アーム２１の軸線方向中央部へ向けて移動する）。そして、位置調節用ねじ部材４３の押圧面４３ａが緊結位置調節ねじ部材４７の後端部と当接すると、当該位置調節用ねじ部材４３は楔移動部材３５を押圧しつつ緊結位置調節ねじ４７の先端部が連結軸１１と当接して停止されるまで前進する。これにより、連結軸１１は、係合傾斜面３２を介して楔移動部材３５によって引っ張られて初回引張り位置Ｐ１に位置決めされる。
【０１１９】
この実施形態では、緊結位置調節ねじ４７の先端部が連結軸１１と当接した際に楔移動部材３５の先端部が連結軸１１の図２４中左側端部と整合するように、緊結位置調節ねじ４７の取付位置が調節されている。このように楔移動部材３５の緊結位置が調節されていることにより、例えば大地震が起きて梁３（アーム２１）に矢印Ｑ方向へ大きな横荷重が掛かった場合に、アームの先端部がアーム２１の内面２１ｉに強く押し付けられて破損してしまうような事態が生じるのを回避できる。
【０１２０】
なお、柱１と梁３とを再度緊結するために連結軸１１を再度引張り位置Ｐ２へ位置決めする場合には、位置調節用ねじ部材４３を取り外した後、緊結位置調節ねじ４７を取り除く。そして、位置調節用ねじ部材４３を再び取付けた後、連結軸引張り手段３１を作動させて連結軸１１を引っ張る。
【０１２１】
ここに、楔移動部材３５は、その押圧部３７の先端部が欠けることを契機に破壊が急激に進み、連結軸１１の係合傾斜面３２との係合関係が解除されてしまう（すなわち、仕口補強金具１０が補強機能を果たさなくなってしまう）が、楔移動部材３５の先端部の欠けが上記したように回避されるので、仕口補強金具１０の構造強度を増大させることができる。
【０１２２】
また、上記した第１〜第３の実施形態において、例えば図２２に示すように、連結軸１１の所定外周部分に刻み（例えば、ローレット）を付けて高摩擦面７５を形成してもよい。これにより、連結軸１１を組み付けたり運搬等する場合に、高摩擦面７５を手で持つようにすれば、手を滑らせて落としてしまうようなことがなくなるとともに回しやすい。したがって、一段と取り扱いやすくなる。
【０１２３】
また、アーム２１の外周部分に刻み（例えば、ローレット）を付けて高摩擦面７６を形成してもよい。これにより、アーム２１が梁３のアーム取付用穴４にしっかり嵌合されるので、当該アーム２１を足場として連結軸１１を連結軸引張り手段３１で一段と安定した状態で引っ張って柱１と梁３とを緊結できる。
【０１２４】
【発明の効果】
請求項１の発明によれば、柱を横方向に貫通するとともに梁の突き合せ端面を所定長さだけ穿って連結用穴を形成し、梁の側面部に連結用穴と直交するようにアーム取付用穴を形成し、連結用穴に挿入されかつ基端部に柱と係止するための係止部が設けられた連結軸と、梁のアーム取付用穴に挿入されかつ長手方向中央部に連結軸を通すための通し穴が開けられた筒状のアームと、このアームを足場として連結軸を引っ張り可能な連結軸引張り手段とからなる仕口補強金具を備え、連結軸引張り手段が、連結軸に形成された係合傾斜面と、アーム内に移動可能に取付けられかつ係合傾斜面と摺接可能な押圧傾斜面を有する楔移動部材と、この楔移動部材を押圧傾斜面と係合傾斜面とを接触させつつ移動させて所定位置に保持可能な位置決め保持手段とを含み、両傾斜面の協働によって連結軸を引張り可能に形成されているので、梁側の位置決め保持手段を作動することによって柱と梁とを緊結できる。そのため、木造建物完成後に柱と梁が木痩せ等した場合、柱に取付けられている外板等を取外すことなく当該柱と梁とを簡単に再度緊結できる。また、二方差し，三方差し，四方差しする場合などにも適用でき適用範囲が広い。したがって、適用範囲が広くて取扱いやすくしかも木痩せ等した場合に柱と梁（又は柱と基礎体）を簡単に再度緊結できる。
【０１２５】
請求項２の発明によれば、梁の連結用穴に挿入される連結軸部位に取付けられた本体およびこの本体に所定個数形成され梁の連結用穴内で開き可能な爪部からなる抜け止め用爪部材と、連結軸引張り手段によって連結軸が引っ張られた場合には抜け止め用爪部材と係合して爪部を開かせて梁の連結用穴の内面に喰い込ませ可能な作動部材とからなる梁抜け阻止体を設けたので、請求項１の発明の場合と同様な効果を奏し得る他、想像を絶する大地震が起きるなどして過大な横揺れが発生した場合でも、梁が柱から離れてしまうのを阻止して家屋が完全に倒壊してしまうのを防止できる。
【０１２６】
請求項３の発明によれば、梁の連結用穴に挿入される連結軸の後端部と柱との間に設けられた本体およびこの本体に所定個数形成され梁の連結用穴内で開き可能な爪部からなる抜け止め用爪部材と、連結軸の引張り状態が解除されて当該連結軸が梁の連結用穴から抜け出る方向へ移動しようとした場合には抜け止め用爪部材と係合して爪部を開かせて柱の突合せ端面に喰い込ませ可能な作動部材とからなる連結軸抜け阻止体を設けたので、請求項１，２の発明の場合と同様な効果を奏し得る他、想像を絶する大地震が起きるなどして過大な横揺れが発生した場合でも、連結軸を介して柱と緊結されている梁が当該柱と離れてしまうのを阻止して家屋が完全に倒壊してしまうのを防止できる。
【０１２７】
請求項４の発明によれば、柱の突き合せ端面を所定長さだけ穿って連結用穴を形成するとともに、当該柱の所定側面部に連結用穴と直交するようにアーム取付用穴を形成し、柱の連結用穴に挿入されかつ下端部に基礎体側の植込ボルトと係止するための係合部が設けられた連結軸と、柱のアーム取付用穴に挿入されかつ長手方向中央部に連結軸を通すための通し穴が開けられた筒状のアームと、このアームを足場として連結軸を引っ張り可能な連結軸引張り手段とからなる仕口補強金具を備え、連結軸引張り手段が、連結軸に形成された係合傾斜面と、アーム内に移動可能に取付けられかつ係合傾斜面と摺接可能な押圧傾斜面を有する楔移動部材と、この楔移動部材を押圧傾斜面と係合傾斜面とを接触させつつ移動させて所定位置に保持可能な位置決め保持手段とを含み、両傾斜面の協働によって連結軸を引張り可能に形成されているので、柱が木痩せした場合に当該柱と基礎体とを簡単に再度緊結できる。また、大地震などで柱が横揺れした場合でも仕口の破損の程度を最小限に抑えることができる。さらに、柱と基礎体を強く緊結しても両部材の突き合せ結合部（仕口）には大きな偏心荷重は作用しない。したがって、取扱いやすくしかも柱が着痩せした場合に当該柱と基礎体とを簡単に再度緊結できる。
【０１２８】
請求項５の発明によれば、連結軸の係合部と基礎体との間に自在継手を介装し、この自在継手が、基礎体上で植込ボルトと相対変位させて係止可能な下部本体と、この下部本体に固定され前記連結軸の係合部を係止可能な係止部が設けられた上部本体とから形成されているので、自在継手を用いて基礎体側の植込ボルトと柱側の仕口補強金具の連結軸とを偏心した状態で固定できる。したがって、請求項４記載の発明と同様な効果を奏し得る他、一段と施工性の向上を図ることができる。
【０１２９】
請求項６の発明によれば、位置決め保持手段と協働して楔移動部材の緊結位置を調節可能な緊結位置調節手段を設けたので、請求項１〜５の発明の場合と同様な効果を奏し得る他、例えば連結軸の係合傾斜面の傾斜角度等を変更した場合に、構造強度が最大となるように楔移動部材の緊結位置を調節できる。
【０１３０】
請求項７の発明によれば、連結軸を軸線方向にねじ結合された複数個の連結軸構成要素から形成したので、請求項１〜６の発明の場合と同様な効果を奏し得る他、柱・梁の大きさや取付け条件などに応じて連結軸の長さを簡単に変更できる。したがって、一段と取り扱いやすくなる。
【０１３１】
請求項８の発明によれば、連結軸の所定外周部分に刻みを付けて高摩擦面を形成したので、請求項１〜７の発明の場合と同様な効果を奏し得る他、連結軸を組み付けたり運搬等する場合に、高摩擦面を手で持つようにすれば、手を滑らせて落としてしまうようなことがなくなるとともに、回しやすい。したがって、一段と使い勝手の向上を図ることができる。
【０１３２】
請求項９の発明によれば、アームの外周部分に刻みを付けて高摩擦面を形成したので、請求項１〜８の発明の場合と同様な効果を奏し得る他、アームが梁のアーム取付用穴にしっかり嵌合されるので、当該アームを足場として連結軸を一段と安定した状態で引っ張って緊結できる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態を説明するための断面図である。
【図２】同じく、連結軸の引張り動作を説明するための断面図である。
【図３】同じく、連結軸の再度の引張り動作を説明するための断面図である。
【図４】同じく、取付態様を説明するための斜視図である。
【図５】同じく、連結軸を説明するための図である。
【図６】同じく、アームを説明するための図である。
【図７】同じく、楔移動部材を説明するための図である。
【図８】同じく、２つの仕口補強金具を用いて柱の左右側面を突き合せ結合した状態を示す図である。
【図９】同じく、本発明の第２の実施形態を説明するための断面図である。
【図１０】同じく、自在継手を説明するための斜視図である。
【図１１】同じく、自在継手の下部本体を説明するための図である。
【図１２】同じく、自在継手の上部本体を説明するための図である。
【図１３】同じく、自在継手を用いて柱と基礎体とを緊結した状態を示す断面図である。
【図１４】同じく、連結軸構成要素を説明するための図である。
【図１５】同じく、梁抜け阻止体と連結軸阻止体とを説明するための断面図である。
【図１６】同じく、梁抜け阻止体を説明するための図である。
【図１７】同じく、梁抜け阻止体の動作を説明するための図である。
【図１８】同じく、連結軸阻止体を説明するための断面図である。
【図１９】同じく、連結軸阻止体の動作を説明するための断面図である。
【図２０】同じく、連結軸を固定用アームを用いて柱に固定した状態を説明するための斜視図である。
【図２１】同じく、固定用アームを説明するための図である。
【図２２】同じく、固定用アームと仕口補強金具とを用いて柱の両側面に梁を連結した状態を説明するための断面図である。
【図２３】同じく、梁の内部を説明するための断面図である。
【図２４】同じく、緊結位置調節手段を説明するための断面図である。
【図２５】同じく、仕口補強金具を用いて継手の補強をした状態を示す図である。
【図２６】同じく、連結軸の基端部と固定用アームとの係合関係を説明するための断面図である。
【図２７】同じく、変形例を説明するための断面図である。
【図２８】従来の木造建物用仕口補強構造（１）を説明するための図である。
【図２９】従来の木造建物用仕口補強構造（２）を説明するための図である。
【図３０】従来の木造建物用仕口補強構造（３）を説明するための図である。
【符号の説明】
１ 柱
２ 連結用穴
３ 梁
４ アーム取付用穴
５ 基礎体
１０ 仕口補強金具
１１ 連結軸
１２ 基端部
２１ アーム
２２ 通し穴
３１ 連結軸引張り手段
３２ 係合傾斜面
３５ 楔移動部材
３６ 押圧傾斜面
４３ 位置調節用ねじ部材（位置決め保持手段）
４７ 緊結位置調節ねじ
５０ 自在継手
５１ 下部本体
６１ 上部本体
７５ 高摩擦面
７６ 高摩擦面
１２１ 梁抜け阻止体
１２２ 抜け止め用爪部材
１２３ 本体
１２４ 爪部
１２５ 作動部材
１３１ 連結軸抜け阻止体
１３２ 抜け止め用爪部材
１３３ 本体
１３４ 爪部
１３５ 作動部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for reinforcing a joint of a wooden building (a joint reinforcement structure for a wooden building).
[0002]
[Prior art]
For example, when a large earthquake occurs, a large load acts on the mouth of a wooden building. Therefore, various measures for reinforcing the joint have been taken conventionally.
FIG. 28 shows an example of a conventional joint reinforcement structure for a wooden building (hereinafter referred to as a first joint reinforcement structure, such as Japanese Utility Model Publication No. 59-3044).
[0003]
In this first joint reinforcing structure, a bolt hole 101 is provided on the end face of the beam 3, an arm hole 102 is provided on a side surface so as to be orthogonal to the bolt hole 101, and the bolt hole 101 is formed on a side portion of the column 1. A bolt hole 103 is drilled through the extension line, an arm 105 having a female screw 104 at the center is inserted into the arm hole 102 of the beam 3, and the length of the trunk is inserted into the bolt hole 103 of the column 1 through a washer 106. The bolts 107 are inserted and screwed between the female screw 104 of the arm 105, whereby the column 1 and the beam 3 are tightly connected to reinforce the joint.
[0004]
As shown in FIG. 29, the first joint reinforcing structure can also be used to reinforce the butt joint (joint) between the column 1 and the foundation body 5 (foundation concrete 6, foundation 7). In FIG. 29, reference numeral 109 denotes a basic packing. A spanner or the like is inserted through a gap between the foundation concrete 6 and the base 7 generated by the foundation packing 109, and the body length bolt 107 is turned to tighten it.
[0005]
FIG. 30 shows another example of a conventional joint reinforcement structure for a wooden building (hereinafter referred to as a second joint reinforcement structure).
[0006]
This second joint reinforcing structure has an L-shaped holding member 112 fixed to the side surface of the pillar 1 with a bolt 111, and a lower portion locked to the foundation body 5 (foundation concrete 6, foundation 7), and an upper end portion. 3 includes a connecting bolt 115 fixed to the holding member 112 via a nut 116. By tightening the nut 116, the column 1 and the base 7 are connected to reinforce the joint.
[0007]
[Problems to be solved by the invention]
By the way, in the case of the first joint reinforcing structure (FIGS. 28 and 29), the body length bolt 107 is turned to press the beam 3 and the column 1 (or the column 1 and the base body 5). After the outer plate or the like is attached to the side surface 1s of the column 1, the outer plate or the like is removed in order to retighten the column 1 and the beam 3 (or the column 1 and the base body 5) by turning the trunk bolt 107. This has the inconvenience of being troublesome. In addition, the work of re-linking the pillar 1 and the beam 3 is performed after several years have passed since construction since the wood (especially cedar etc. containing a lot of water) shrinks (decays wood) as it dries. It is desirable.
[0008]
In addition, as shown in FIG. 28, when the beam 3 is butt-joined to one side surface of the pillar 1, the first joint reinforcing structure can be applied, but all the outlets (two-way, three-way) The application range is narrow, not applicable.
[0009]
On the other hand, in the case of the second joint reinforcing structure (FIG. 30), a certain degree of reinforcing effect is recognized in the vertical pitch of the earthquake, but the reinforcing effect is hardly exerted against the roll and the column 1 is tenoned. There is a risk of damage from the roots of the surface.
[0010]
Even if the joint reinforcement structure has sufficient strength, if an excessive roll occurs due to an unimaginable large earthquake, a part of the structure may be destroyed. However, even in such a case, if the beam is separated from the pillar, the house will be completely collapsed and the occupants will be crushed. Therefore, it is necessary to establish technology to prevent the beam from separating from the pillar. .
[0011]
An object of the present invention is to provide a joint reinforcing structure for a wooden building that can easily re-connect a column and a beam (or a column and a base body) when the application range is wide and easy to handle and the wood is thin. In addition, even if an excessive roll occurs due to an unimaginable earthquake, a wooden building joint reinforcement structure that prevents the beam from separating from the pillar and prevents the house from being completely collapsed is provided. It is also intended to provide.
[0012]
[Means for Solving the Problems]
The invention according to claim 1 is a joint reinforcement structure for a wooden building that reinforces the butt joint of the column and the beam, and penetrates the column in the lateral direction and connects the butt end surface of the beam by a predetermined length. A mounting hole is formed on the side surface of the beam so as to be orthogonal to the connecting hole, and a locking portion is provided to be inserted into the connecting hole and locked to the column at the base end. A connecting arm, a cylindrical arm that is inserted into the arm mounting hole of the beam and has a through-hole for passing the connecting shaft in the center in the longitudinal direction, and the connecting shaft can be pulled using this arm as a scaffold It is provided with a joint reinforcing bracket comprising a connecting shaft pulling means, and the connecting shaft pulling means is movably mounted in the arm and slidably contacted with the engaging inclined surface. A wedge moving member having a pressing inclined surface, and the wedge moving member engaging with the pressing inclined surface And a holdable positioning and holding means is moved while in contact with the predetermined position the door, characterized in that it is formed to be pulling the connecting shaft by the cooperation of both inclined surfaces.
[0013]
In the case of this invention, when the positioning and holding means provided on the beam is operated to move the wedge moving member, the connecting shaft is moved by the cooperation of the pressing inclined surface of the wedge moving member and the engaging inclined surface of the connecting shaft. Be pulled. Thereby, the column and the beam are tightly coupled.
[0014]
In this way, the column and beam are tightly connected by operating the positioning and holding means on the beam side, so if the column and beam are thinned after completion of the wooden building, remove the outer plate attached to the column. The column and the beam can be easily connected again. It can also be applied to two-way insertion, three-way insertion, and four-way insertion.
[0015]
In addition, the butt joint between the column and the beam is generally connected to the mortise on the beam side by being inserted into the mortise on the column side. Reinforcement can prevent the joint from being damaged even in the event of a major earthquake. Furthermore, even if the column and the beam are tightly coupled, a large eccentric load does not act on the butt coupling portion (joint) of both members, and the coupling strength is not reduced.
[0016]
Therefore, when the application range is wide and easy to handle, and the wood is thinned, the columns and beams (or the columns and foundations) can be easily connected again.
[0017]
According to a second aspect of the present invention, there is provided a main body attached to the connecting shaft portion that is inserted into the connecting hole of the beam, and a retaining member that is formed in a predetermined number on the main body and can be opened in the connecting hole of the beam. When the connection shaft is pulled by the connection claw member and the connection shaft pulling means, the claw member can be engaged with the retaining claw member to open the claw portion so that it can bite into the inner surface of the connection hole of the beam It is the joint reinforcement structure for wooden buildings which provided the beam drop prevention body which consists of an operation member.
[0018]
In the case of this invention, when an unimaginable large earthquake occurs and, for example, the wedge moving member of the connecting shaft pulling means is broken, the connection between the connecting shaft and the arm is released. When such a situation occurs, the beam is not subject to position restriction by the connecting shaft. For this reason, the beam may try to move laterally in response to an earthquake roll, but the claw portion of the retaining claw member that is opened by the actuating member and bites into the inner surface of the beam coupling hole is connected. In cooperation with the member, the lateral movement of the beam is prevented. Therefore, even if an excessive roll occurs due to an unimaginable large earthquake, it is possible to prevent the beam from being separated from the column and prevent the house from being completely collapsed.
[0019]
According to a third aspect of the present invention, there is provided a main body provided between a rear end portion of the connecting shaft inserted into the connecting hole of the beam and the pillar, and a predetermined number of the main body formed in the connecting hole of the beam. A retaining pawl member composed of a possible pawl portion and an engagement with the retaining pawl member when the connecting shaft is released and the connecting shaft is about to move out of the beam connecting hole. Then, the joint reinforcing structure for a wooden building is provided with a connecting shaft slip-off preventing body that includes an operating member that can be opened at the end face of the column by opening the claw portion.
[0020]
In the case of this invention, when an unimaginable large earthquake occurs and, for example, the wedge moving member of the connecting shaft pulling means is broken, the connection between the connecting shaft and the arm is released. When such a situation occurs, the connecting shaft may come out of the connecting hole of the beam, but the claw portion of the retaining pawl member that bites into the end face of the column prevents the connecting shaft from moving laterally. Therefore, even if an excessive roll occurs due to an unimaginable large earthquake, the house is completely prevented by preventing the beam that is tightly connected to the column via the connecting shaft from separating from the column. It can be prevented from collapsing.
[0021]
The invention according to claim 4 is a joint reinforcement structure for a wooden building that reinforces the butt joint portion between the pillar and the foundation, and forms a connection hole by drilling the butt end face of the pillar by a predetermined length. An arm mounting hole is formed in a predetermined side surface portion of the column so as to be orthogonal to the connection hole, and is inserted into the connection hole of the column and is engaged with the lower end portion to lock the implantation bolt on the base body side. A connecting shaft provided with a portion, a cylindrical arm inserted into the arm mounting hole of the pillar and having a through-hole for passing the connecting shaft in the center in the longitudinal direction, and the connecting shaft using this arm as a scaffold The joint reinforcing member comprises a connecting shaft pulling means capable of being pulled, and the connecting shaft pulling means is slidably attached to the engaging inclined surface formed on the connecting shaft and movably mounted in the arm. A wedge moving member having a pressing inclined surface that can be contacted, and the wedge moving member Moving while contacting the inclined surface engages the inclined surface and a retaining possible positioning and holding means at a predetermined position, characterized in that it is formed to be pulling the connecting shaft by the cooperation of both inclined surfaces.
[0022]
In the case of this invention, when the positioning and holding means provided on the predetermined side surface portion (for example, the inner side surface portion) of the column is operated to move the wedge moving member, the pressing inclined surface of the wedge moving member and the coupling shaft are engaged. The connecting shaft is pulled by cooperation with the inclined surface. As a result, the pillar and the foundation body are tightly coupled. In addition, the side part to which an outer plate etc. are not attached is selected for the predetermined side part of the said pillar.
[0023]
In this way, the positioning and holding means provided on the predetermined side surface portion of the column are operated to tightly connect the column and the beam. Therefore, when the column is thinned after completion of the wooden building, the two members can be easily coupled again. it can. In addition, since the connecting shaft is housed in the column, even if the column rolls due to a large earthquake or the like, an excessive bending moment or tensile force does not act on the connecting shaft and it is difficult to break. Therefore, it can prevent that the butt | joining coupling | bond part of a pillar and a base body deform | transforms greatly or breaks. Furthermore, even if the column and the base body are tightly coupled, a large eccentric load does not act on the butt coupling portion (joint) of both members, and the coupling strength does not decrease.
[0024]
Therefore, when it is easy to handle and the tree is thinned, the pillar and the base body can be easily connected again.
[0025]
According to a fifth aspect of the present invention, a universal joint is interposed between the engaging portion of the connecting shaft and the base body, and the universal joint can be locked by being displaced relative to the implantation bolt on the base body. It is a joint reinforcement structure for wooden buildings formed from a lower main body and an upper main body provided with a locking portion fixed to the lower main body and capable of locking the engaging portion of the connecting shaft.
[0026]
In the case of this invention, it can fix in the state which eccentrically attached the implantation bolt by the side of a base body, and the connection axis | shaft of the joint reinforcement fitting by the side of a pillar using a universal joint. Therefore, in addition to the effects and advantages similar to those of the invention according to the fourth aspect, the workability can be further improved.
[0027]
A sixth aspect of the invention is a joint reinforcing structure for a wooden building provided with a tightening position adjusting means capable of adjusting the tightening position of the wedge moving member in cooperation with the positioning holding means.
[0028]
In the case of this invention, for example, when the inclination angle of the engagement inclined surface of the connecting shaft is changed, the binding position of the wedge moving member can be adjusted so that the connection strength becomes maximum. Here, the tightening position is a position of the wedge moving member with respect to the connection shaft when the connection shaft pulling means is used to pull the connection shaft and the beam and the column are first connected.
[0029]
A seventh aspect of the present invention is a joint reinforcement structure for a wooden building in which the connecting shaft is formed from a plurality of connecting shaft components screwed in the axial direction.
[0030]
In the case of this invention, the length of the connecting shaft can be easily changed according to the size of the column / beam, the mounting conditions, and the like. Therefore, it becomes easier to handle.
[0031]
The invention according to claim 8 is a joint reinforcing structure for a wooden building in which a predetermined friction portion of the connecting shaft is cut to form a high friction surface.
[0032]
In the case of such an invention, when the connecting shaft is assembled or transported, if the high friction surface is held by hand, the hand is not slid and dropped, and it is easy to turn. Therefore, it becomes easier to handle.
[0033]
The invention of claim 9 is a joint reinforcing structure for a wooden building in which a high friction surface is formed by notching the outer peripheral portion of the arm.
[0034]
In the case of this invention, since the arm is firmly fitted in the arm mounting hole of the beam, the connecting shaft can be pulled in a more stable state using the arm as a scaffold, and can be tightened.
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0035]
(First embodiment)
[0036]
As shown in FIGS. 1 to 8, the joint reinforcement structure for a wooden building according to the first embodiment penetrates the pillar 1 in the lateral direction and pierces the butted end face of the beam 3 by a predetermined length. The joint reinforcing bracket 10 is formed with the hole 2, the arm attachment hole 4 formed in the side surface of the beam 3 so as to be orthogonal to the connection hole 2, and the connection shaft 11, the arm 21, and the connection shaft tension means 31. Thus, the column 1 and the beam 3 are tightly connected to each other so that the butt joint portion (joint) of both (1, 3) can be reinforced.
[0037]
Specifically, as shown in FIG. 1, a tenon 3a is formed on the butted end surface of the beam 3, and the tenon 3a is inserted into a tenon hole 1a formed in the end surface 1u of the column 1. . As shown in FIG. 4, the connecting hole 2 is formed away from the longitudinal axis of the beam 3 by a predetermined distance (for example, 0 to 15 mm) in the vertical direction. Thus, by forming the connecting hole 2 away from the center of the end face of the beam 3 in the vertical direction, it is possible to avoid cracks that naturally enter the center of the wood such as the beam 3 and to connect the connecting shaft 11 to the connecting shaft 11. Even if the tensile force is applied, the tensile force is not reduced regardless of the natural crack of the beam 3.
[0038]
Further, the connecting hole 2 passes through the tenon 3 a of the beam 3. This is because the tenon 3a is directly reinforced by the connecting shaft 11 described in detail later. The inner diameter of the connecting hole 2 is selected so that the gap with the connecting shaft 11 is minimized as long as there is no hindrance to drilling. Thereby, the cross-sectional omission of the beam 3 is reduced, and the connecting shaft 11 can be effectively prevented from buckling.
[0039]
In this embodiment, the inner diameter of the connecting hole 2 on the beam 3 side is 21 mm with respect to the connecting shaft 11 having a diameter of 17 mm. The connecting hole 2 on the side of the pillar 1 has an inner diameter of 15 mm with respect to a countersunk bolt 91 having a diameter of 12 mm, which will be described in detail later. The arm mounting hole 4 has a larger inner diameter (for example, 30.5 mm) than the connection hole 2. Incidentally, the arm 21 inserted into the arm mounting hole 4 has a diameter of 30 mm.
[0040]
Next, the joint reinforcing metal fitting 10 is inserted into the connecting hole 2 and has a connecting shaft 11 provided with a locking portion (13) for locking with the pillar 1 at the base end portion 12, and an arm of the beam 3. A cylindrical arm 21 inserted into the mounting hole 4 and having a through hole 22 for passing the connecting shaft 11 in the center in the longitudinal direction, and a connecting shaft tension capable of pulling the connecting shaft 11 using the arm 21 as a scaffold. And means 31. In addition, each component (11, 21, 31 etc.) of the joint reinforcement metal fitting 10 is made of steel. Hereinafter, each component (11, 21, 31 etc.) will be described.
[0041]
First, as shown in FIGS. 5A and 5B, the connecting shaft 11 has a long dimension (for example, a total length L = 311 to 360 mm) and a round shaft shape. A female thread portion 13 is screwed to the base end portion 12 of the connecting shaft 11 as a locking portion. In this embodiment, the connecting shaft 11 is inserted into the connecting hole 2 on the beam 3 side.
[0042]
Here, as shown in FIG. 14, the connecting shaft 11 may be formed from a plurality (three in this embodiment) of connecting shaft components (11A, 11B, 11C) screwed in the axial direction. .
[0043]
In FIG. 14, 16a, 16b, and 16c are screw portions because they are screwed to the rear ends of the connecting shaft components (11A, 11B, and 11C). Both have the same shape as the female thread portion 13 of the connecting shaft 11 shown in FIGS. 5 (A) and 5 (B). Reference numerals 17a and 17b denote male threaded portions that are screwed to the distal end portions of the connecting components (11B and 11C).
[0044]
In this way, by making the connecting shaft 11 split, the length of the connecting shaft 11 can be easily changed according to the size of the pillar 1 and the beam 3, the mounting conditions, etc., and it becomes easier to handle.
[0045]
As shown in FIG. 1, a countersunk bolt 91 connected to the female screw portion 13 of the connecting shaft 11 is inserted into the connecting hole 2 on the pillar 1 side. The countersunk bolt 91 has a length corresponding to the width dimension of the column 1. The male screw portion 91s of the countersunk bolt 91 is screwed into the female screw portion 13 of the connecting shaft 11 until the tip portion reaches the marking line M2.
[0046]
A head 91 h of the countersunk bolt 91 is pressed against the side surface 1 s of the column 1 via a disc-shaped washer 92. Thereby, the base end portion 12 of the connecting shaft 11 is fixed to the column 1. Here, “fixed” means a state in which movement of the connecting shaft 11 in a direction away from the column 1 (excluding movement by tension) is regulated by the column 1. For example, the washer 92 has a diameter of 60 mm and a thickness of 10 mm.
[0047]
The head 91 h of the countersunk bolt 91 is completely accommodated in the washer 92 and does not protrude from the side surface 1 s of the column 1. Thus, for example, even when the outer plate is attached to the side surface 1s of the pillar 1, it is not necessary to scrape the outer plate portion against which the head 91h of the countersunk bolt 91 hits, and the working efficiency can be improved. Further, since the washer 92 is circular, even when a large lateral load is applied via the countersunk bolt 91, the column 1 is hardly damaged. The washer 92 itself is not damaged.
[0048]
Further, as shown in FIG. 5A, marking points M1 and marking lines M2 are marked on the outer periphery of the base end portion 12 of the connecting shaft 11. The marking point M1 is for confirming the position of the engagement inclined surface 32 of the connecting shaft 11 in the direction around the vertical axis. The marking line M2 is for position confirmation with respect to the pillar 1.
[0049]
Normally, as shown in FIG. 1, the connecting shaft 11 is accurately inserted into the countersunk bolt 91 by screwing the connecting shaft 11 into the countersunk bolt 91 on the column 1 side until the marking line M2 is aligned with the butted end surface 1u of the column 1. Can be connected. When the drilling position of the arm mounting hole 4 of the beam 3 is changed, the axial position of the connecting shaft 11 can be adjusted using the marking line M2 as a mark. In addition, the tightening adjustment of the column 1 and the beam 3 and the method of pulling the wedge moving member 35 can be easily performed without taking out the dimensions.
[0050]
Next, as shown in FIGS. 6A and 6B, the arm 21 has a cylindrical shape. The inner diameter of the through hole 22 of the arm 21 is 17.5 mm, which is slightly larger than the diameter (17 mm) of the connecting shaft 11. A large-diameter female screw portion 23 is formed on the right side of the arm 21 in FIG. 6A, and a small-diameter female screw portion 24 is formed on the left side in FIG. The large-diameter female screw portion 23 is screwed with a position adjusting screw member 43 of a positioning holding means, which will be described in detail later. Further, a set screw 45 for locking the connecting shaft is screwed into the small diameter female thread portion 24 of the arm 21.
[0051]
Further, an adjustment groove 25 for rotating the arm 21 around the axis is formed on the right end surface in FIG. 6A of the arm 21. The position of the through hole 22 in the direction around the axis can be adjusted by inserting the tip of the driver into the adjusting groove 25 and turning it. The edge of the through hole 22 of the arm 21 is chamfered C so that the connecting shaft 11 can be easily inserted.
[0052]
As shown in FIG. 2, the end surface of the arm 21 is blocked from the outside by a urethane foam 19 or a cap (not shown), so that no condensation occurs. Therefore, rust does not occur and the joint reinforcement function is exhibited over a long period. The urethane foam 19 or cap is convenient because it can be easily removed even when the pillar 1 and the beam 3 are fastened again.
[0053]
As shown in FIG. 1, the connecting shaft pulling means 31 includes an engaging inclined surface 32 formed on the connecting shaft 11, and a pressing inclination that is movably attached to the arm 21 and can slide on the engaging inclined surface 32. A wedge moving member 35 having a surface 36, and positioning holding means (43) capable of moving the wedge moving member 35 while keeping the pressing inclined surface 36 and the engaging inclined surface 32 in contact with each other and holding the wedge moving member 35 in a predetermined position. The connecting shaft 11 can be pulled by the cooperation of both inclined surfaces (32, 36).
[0054]
Here, as shown in FIGS. 5 (A) and 5 (B), the engagement inclined surface 32 is a flat surface of the same length from both sides so that the distal end side of the portion near the distal end portion of the connecting shaft 11 is inclined. It is formed by cutting into a shape. That is, two engagement inclined surfaces (32, 32) are formed on the tip end side of the thin portion 15 thus formed.
[0055]
As shown in FIGS. 7A, 7B, and 7C, the wedge moving member 35 has a pair of pressing portions (37, 37) protruding in a bifurcated manner, and both pressing portions (37 37) is formed with a pressure inclined surface (36, 36) at the upper end of the tip. The wedge moving member 35 is formed so that the thin portion 15 of the connecting shaft 11 can be inserted between the pressing portions (37, 37). In this embodiment, the inclination angle of the pressing inclined surface 36 with respect to the vertical axis is 30 °.
[0056]
An extraction female thread 39 is screwed to the end of the wedge moving member 35. When taking out the wedge moving member 35 put in the arm 21 for repair or inspection, a long bolt 81 is inserted into the arm 21 as shown by a two-dot chain line in FIG. The screw 81 is screwed with the female thread 39 of the wedge moving member 35 and the bolt 81 is pulled out in this state. Further, as shown in FIG. 7B, a marking point M3 for confirming the position of the pressing portions (37, 37) around the axial direction is marked on the end face of the wedge moving member 35.
[0057]
As shown in FIG. 1, the positioning and holding means is formed by a position adjusting screw member 43 that is rotatably engaged with the large-diameter female screw portion 23 of the arm 21. Here, in this embodiment, the connecting shaft 11 is locked by the set screw 46 so that the connecting shaft 11 can be held at the initial pulling position P1 shown in FIG. 2 and the pulling position P2 shown in FIG. It is said that.
[0058]
The set screw 46 is rotatably engaged with the small diameter female screw portion 24 of the arm 21 and is formed so as to be able to be locked at a position where the tip portion contacts the positioning recess (44, 45) of the connecting shaft 11. . Here, the upper positioning recess 44 in FIG. 1 is used to lock the connecting shaft 11 at the first pulling position (initial pulling position P1), and the lower positioning recess 45 again connects the connecting shaft 11. This is for locking at the pulled position (again, the pulled position P2).
[0059]
With this set screw 46, the wedge moving member 35 is taken out from the arm 21 for repair and inspection while the connecting shaft 11 is held at the initial pulling position P1 or the pulling position P2, and then returned to the arm 21 to return to the connecting shaft. 11 can be held again. Accordingly, the set screw 46 is useful for maintenance of the wedge moving member 35.
[0060]
In addition, in order to confirm the structural strength of the joint reinforcing bracket 10, a tensile test is performed by holding the base end portion 12 of the connecting shaft 11 and the arm 21 with a chuck or the like, and it can withstand a load of about 107,000 N. It became clear (according to the test result of Gunma Industrial Experiment Station).
[0061]
Next, the operation of this embodiment will be described with reference to the drawings.
[0062]
As shown in FIG. 1, when the screw member 43 for adjusting the position of the joint reinforcing bracket 10 is rotated and moved inward using a hexagon wrench 82, the wedge moving member 35 is pushed and moved inward. Thus, the pressing inclined surface 36 comes into contact with the engaging inclined surface 32 of the connecting shaft 11. Next, when the position adjusting screw member 43 is further rotated in this state, the wedge moving member 35 moves inward while bringing the pressing inclined surface 36 into sliding contact with the engaging inclined surface 32. As a result, the connecting shaft 11 is pulled from the initial position P0 shown in FIG. 1 to the position shown in FIG. 2 (initial pulling position P1), and the positioning recess 44 is positioned at a position where it aligns with the small diameter screw portion 24 of the arm 21. The
[0063]
Next, in this state, the set screw 46 is screwed into the small diameter female screw portion 24 of the arm 21 and is rotated until the tip portion comes into contact with the positioning recess 44. Accordingly, the connecting shaft 11 is held at a position pulled by a predetermined length by the wedge moving member 35 and the position adjusting screw member 43 and is also locked by the set screw 46. At this time, since the pressing inclined surface 36 of the wedge moving member 35 is in contact with the entire engaging inclined surface 32 of the connecting shaft 11, the connecting shaft 11 can be reliably held at the initial pulling position P1.
[0064]
Thereby, the column 1 and the beam 3 are tightly coupled. In this way, the column 1 and the beam 3 are tightly coupled by operating the positioning holding means (position adjusting screw member 43) on the beam 3 side, so that as shown in FIG. When 3 is thin, the connecting shaft 11 can be pulled again to the pulling position P2, and both the members (1, 3) can be easily fastened again.
[0065]
Further, the arm 21 is fixed to the beam 3, and by moving the wedge moving member 43 in the arm 21, the connecting shaft 11 whose base end 12 side is fixed to the column 1 is pulled using the arm 21 as a scaffold. Since it is configured, the beam 3 can be tightly coupled to the column 1 without receiving an eccentric load.
[0066]
Further, since the connecting shaft 11 is housed in the beam 3 and the pillar 1, even when the beam 3 is shaken due to a large earthquake or the like, the connecting shaft 11 is not easily damaged because a large bending moment or tensile force does not act on the connecting shaft 11. The (1, 3) butt joint can be protected. Further, since the tenon 3a of the weak beam 3 is directly reinforced by the connecting shaft 11, it is possible to prevent the connecting portion from being damaged.
[0067]
Therefore, the column 1 and the beam 3 (or the column 1 and the base body 5) can be easily re-tightened when the application range is wide and easy to handle and the tree is thin.
[0068]
Further, since the connecting shaft 11 combined with the arm 21 is completely accommodated in the beam 3, the joint reinforcement fitting 10 can be transported in a state accommodated in the beam 3. Therefore, it is possible to effectively prevent damage to the joint reinforcement fitting 10 during transportation.
[0069]
In addition, since a relatively short countersunk bolt 91 is connected to the long connecting shaft 11 and the column 1 and the beam 3 are tightly coupled, there is an empty space for inserting the countersunk bolt 91 on the end surface 1s side of the column 1. All that is required is easy to install. Moreover, the countersunk | bolt bolt 91 can use a commercial item, and can aim at cost reduction.
[0070]
In addition, the tensile strength of the joint reinforcement fitting 10 can be further increased by merely increasing the strength by quenching only the wedge moving member 35.
[0071]
Further, when the building is constructed by the true wall method in which the pillar 1 and the beam 3 can be seen, the connecting shaft 11 and the arm 21 of the joint reinforcing bracket 10 are housed in the pillar 1 and the beam 3 and are not unsightly. The beauty and landscape are not impaired.
[0072]
The joint reinforcement bracket 10 is considered to function well in the Kobe earthquake class, but in the future, if an unimaginable large earthquake occurs and an excessive roll occurs, some (for example, , The wedge moving member 35) may be damaged and the function (function of binding the column 1 and the beam 3) may not be exhibited.
[0073]
However, even when such a situation occurs, in this embodiment, the beam drop prevention body 121 and the connecting shaft drop prevention body are prevented so that the beam 3 can be prevented from moving away from the pillar 1 and the house can be completely collapsed. 131 is provided. Here, if complete collapse of the house can be prevented, the probability that a resident can secure a space to avoid being crushed in the house can be increased.
[0074]
As shown in FIGS. 15 and 16, the beam drop prevention body 121 has a retaining claw member 122 engaged with the connecting shaft 11 and an operation member 125, and the wedge moving member 35 is damaged. Even when the connection between the connection shaft 11 and the arm 21 is released, the beam 3 is separated from the column 1 by the claw portion 124 of the retaining claw member 122 that bites into the inner surface of the connection hole 2 of the beam 3. It is formed so that it can be prevented.
[0075]
Specifically, as shown in FIG. 16, the retaining pawl member 122 has a main body 123 attached to a connecting shaft 11 portion inserted into the connecting hole 2 of the beam 3, and a predetermined number of the main body 123 is formed on the main body 123. A predetermined number of claw portions 124 that can be opened in the connection hole 2 of the beam 3 are formed.
[0076]
The main body 123 is formed in a cylindrical shape, and is attached to the connecting shaft 11 portion so as to be movable in the axial direction and rotatable about the axis. A plurality of claw portions 124 are formed integrally with the main body 123, and can be independently deformed in a direction away from the connecting shaft 11 with the base end portion 124a as a fixed end, and returned to the original position by an elastic restoring force. It is made possible.
[0077]
A first stopper groove 127 and a second stopper groove 128 are formed on the inner surface side of the base end portion 124 a of each claw portion 124. The retainer claw member 122 is made of a metal material rich in elasticity.
[0078]
When the connecting shaft 11 is pulled by the connecting shaft pulling means 31, the actuating member 125 engages with the retaining claw member 122 to open each claw portion 124 to open the inner surface of the connecting hole 2 of the beam 3. It is formed so that it can be bitten. Specifically, the actuating member 125 is integrally provided on a predetermined outer peripheral portion of the connecting shaft 11. The actuating member 125 includes a tapered portion 126 and a ring-shaped protrusion 129 formed at a predetermined distance ahead of the tapered portion 126.
[0079]
When the connecting shaft pulling means 31 starts to pull the connecting shaft 11, the operating member 125 moves forward toward the arm 21 and presses the claw member 122 against the arm 21. In this state, the actuating member 125 further advances, and the tapered portion 126 slides on the inner surface of each claw portion 124 of the retaining claw member 122 to open the claw portion 124. Then, as shown in FIG. 17, when the connecting shaft 11 is pulled to the initial pulling position P <b> 1, the projection 129 of the operating member 125 is inserted into the first stopper groove 127 of the retaining claw member 122.
[0080]
When the connecting shaft 11 is pulled again to the pulling position P2 by the connecting shaft pulling means 31 for re-tightening, the actuating member 125 moves forward with each claw portion 124 of the retaining claw member 122 opened. The protrusion 129 is inserted into the second stopper groove 128 of the retaining claw member 122.
[0081]
Here, even if the wedge moving member 35 of the connecting shaft pulling means 31 is broken due to an unimaginable large earthquake and the connection between the connecting shaft 11 and the arm 21 is released, for example, the connecting hole 2 of the beam 3 is removed. It is possible to prevent the beam 3 from being separated from the pillar 1 by the cooperation of the retaining claw member 122 that has bitten into the inner surface of the shaft and the connecting shaft 11. At this time, since the retaining claw member 122 is restricted from moving in the right direction in FIG. 17 by the protrusion 129 and the first stopper groove 127, it is ensured that the lateral direction of the beam 3 (right direction in FIG. 17). ) Can be prevented. Therefore, it can prevent that the beam 3 leaves | separates from the pillar 1, and can prevent complete collapse of a house.
[0082]
Next, as shown in FIGS. 15 and 18, the connecting shaft drop prevention body 131 is provided between the base end portion 12 of the connecting shaft 11 inserted into the connecting hole 2 of the beam 3 and the column 1. The connecting shaft 11 is released by releasing the pulling state of the main body 133 and a retaining claw member 132 formed of a predetermined number of the main body 133 and opening in the connecting hole 2 of the beam 3, and the connecting shaft 11. Engages with the retaining claw member 132 to open the claw portion 134 and bite it into the column 1 when it tries to move in the direction of exiting from the coupling hole 2 of the beam 3 (left direction in FIG. 18). And a possible actuating member 135.
[0083]
Specifically, the main body 133 of the claw member 132 is formed in a cylindrical shape, and is attached to a countersunk bolt 91 screwed into the proximal end portion 12 of the connecting shaft 11 so as to be movable in the axial direction and rotatable about the axis. Has been. A plurality of claw portions 134 are formed integrally with the main body 133, and each of them can be independently bent and deformed in a direction away from the connecting shaft 11 with the base end portion 134a as a fixed end, and returned to the original position by an elastic restoring force. It is made possible. The retainer claw member 132 is made of a metal material rich in elasticity.
[0084]
The actuating member 135 is attached to a countersunk bolt 91 screwed into the proximal end portion 12 of the connecting shaft 11 so as to be relatively movable in the axial direction and rotatable about the axis. The actuating member 135 has a tapered portion 136, and the tapered portion 136 is formed so as to be slidable in contact with the inner surface of each claw portion 134 of the retaining claw member 132.
[0085]
Here, even when the wedge moving member 35 of the connecting shaft pulling means 31 is broken due to an unimaginable large earthquake and the connection between the connecting shaft 11 and the arm 21 is released, as shown in FIG. It is possible to prevent the connecting shaft 11 from coming out of the connecting holes 2 of the pillar 1 and the beam 3 by the retaining pawl member 132 that bites into the pillar 1. Therefore, it can prevent that the beam 3 fastened with the pillar 1 via the connection shaft 11 leaves | separates from the said pillar 1, and can prevent that a house is completely collapsed. Thereby, the probability that the space which avoids being crushed in the house which the resident collapsed can be ensured can be raised.
[0086]
In the above-described embodiment, the base end portion 12 of the connecting shaft 11 is fixed to the column 1 using the flat head bolt 91. However, as shown in FIGS. Good. Here, a male thread portion 18 as a locking portion is screwed to the proximal end portion 12 of the connecting shaft 11.
[0087]
On the other hand, as shown in FIG. 21, the fixing arm 26 is fitted into a mounting hole 27 formed in the side surface 1t of the column 1 so as to be orthogonal to the connecting hole 2 on the column 1 side. A female screw portion 28 to which the male screw portion 18 of the connecting shaft 11 can be screwed is screwed at the center in the axial direction.
[0088]
Therefore, by inserting the fixing arm 26 into the mounting hole 27 of the column 1 and screwing the male screw portion 18 of the connecting shaft 11 into the female screw portion 28 of the arm 26 in this state, the base end portion of the connecting shaft 11 is obtained. 12 is fixed to the pillar 1.
[0089]
By adopting such a configuration, the connecting shaft 11 can be fixed to the column 1 even when the countersunk bolt 91 or the like cannot be inserted from the side surface 1 s opposite to the butting surface 1 u of the column 1.
[0090]
In addition, the aesthetic appearance of the pillar 1 as viewed from the side surface 1s can also be improved.
[0091]
Further, as shown by a two-dot chain line in FIG. 21, when connecting the beam (3) to the side surface 1t side of the column 1, the male screw of the connecting shaft (11) is connected to the left side surface of the fixing arm 26 in the drawing. The beam (3) can be fastened to the column 1 by providing the internal thread portion 29 to which the portion (18) can be screwed. In this case, since the fixing arm 26 is hidden inside by the beam (3), the appearance of the pillar 1 can be further improved in appearance.
[0092]
Note that the above-described joint reinforcement structure for a wooden building can be applied to a case in which the beam 3 is butt-joined to both sides of the column 1 as shown in FIG. In this case, the base end portions 12 of the connection shaft 11 of the joint reinforcement fitting 10 inserted into the connection holes 2 of the beams 3 are connected to each other using both screw members 84. Therefore, the base end portion 12 of each connecting shaft 11 is indirectly fixed in the column 1.
[0093]
Further, when the base end portion 12 of the connecting shaft 11 is screwed to the both screw members 84, the marking line M2 is aligned with the side surface (1s, 1u) of the column 1 and the insertion posture is adjusted from the marking point M1. Thus, each joint reinforcing bracket 10 can be set smoothly.
[0094]
Here, when the beam 3 is butt-joined to both side surfaces of the column 1, the above-described joint reinforcing bracket 10 is used for fastening one beam 3, and a fixed joint is used for fastening the other beam 3. Reinforcing metal fitting 10D may be used.
[0095]
The fixed joint reinforcing metal fitting 10D is inserted into the connecting hole 2 of the beam 3 and has a connecting shaft 11D provided with a locking portion (female screw portion 13d) for locking with the pillar 1 at the base end portion 12d. And a cylindrical arm 21 that is inserted into the arm mounting hole 4 of the beam 3 and has a screw hole 21h that is screwed into the distal end screw portion 14d of the connecting shaft 11D at the center in the longitudinal direction. Each connecting shaft (11, 11D) may be provided with the above-described retaining member 121 and the connecting shaft retaining member 131 as shown in FIG. In addition, as shown to the same figure (B), you may reverse the attachment direction of the prevention | prevention body 121 for prevention of detachment (the same also in FIGS. 15-17).
[0096]
In addition, using the above-described joint reinforcement structure for wooden buildings (joint reinforcement bracket 10), as shown in FIG. 25, for example, the same via a cross lip 142, a metal cross lip (not shown), or the like. One member 140A and the other member 140B joined on the axis can be tightly coupled. Here, the connecting shaft 11 passes through the connecting holes 2 of the one member 140A and the other member 140B. The left end of the connecting shaft 11 in FIG. 25 is locked with the fixing arm 143, and the right end of the connecting shaft 11 is locked with the arm 21.
[0097]
The fixing arm 143 is formed so as to fix the left end portion 12 (the locking groove 12m) of the connecting shaft 11 in the figure. That is, a through hole 144 through which the left end portion 12 of the connecting shaft 11 can be passed is formed through the central portion of the fixing arm 143 in the axial direction as shown in FIG. A female screw portion 145 is formed on the end surface of the arm 143 so as to open to the through hole 144, and a set screw 146 is screwed into the female screw portion 145. The left end portion 12 of the connecting shaft 11 is fixed to the arm 143 by rotating the set screw 146 in the tightening direction and bringing the tip end thereof into contact with the locking groove 12 m of the connecting shaft 11.
[0098]
Accordingly, the one member 140 </ b> A and the other member 140 </ b> B are tightened by pulling the connecting shaft 11 toward the arm 21 using the connecting shaft pulling means 31.
[0099]
In addition, as shown in FIG. 27, a plurality of locking grooves 12m are provided at predetermined intervals in the axial direction, and a position restricting mechanism that controls the position of each locking groove 12m in the axial direction [locking balls (148A, 148B). Further, a pressing screw (149A, 149B) and a spring 149S for pressing the locking balls (148A, 148B) to the locking groove 12m may be provided.
[0100]
(Second Embodiment)
[0101]
A second embodiment is shown in FIG.
[0102]
The joint reinforcement structure for a wooden building according to the second embodiment forms a connection hole 2 by drilling the end face of the column 1 by a predetermined length, and connects the connection hole 2 to a predetermined side surface of the column 1. Are formed in the arm mounting holes 4 so as to be orthogonal to each other, and are inserted into the connection holes 2 of the pillars 1, and an engaging portion (14) for engaging with the implantation bolts 8 on the base body 5 side at the lower end portion. A connecting shaft 11 provided, a cylindrical arm 21 inserted into the arm mounting hole 4 of the pillar 1 and having a through hole 22 for passing the connecting shaft 11 in the center in the longitudinal direction, and this arm 21 The joint reinforcing member 10 includes a connecting shaft pulling means 31 capable of pulling the connecting shaft 11 as a scaffold, and the connecting shaft pulling means 31 is formed in the engagement inclined surface 32 formed on the connecting shaft 11 and the arm 21. Pressing inclined surface that is movably attached and is capable of sliding contact with the engaging inclined surface 32 6 and a positioning and holding means (43) capable of moving the wedge moving member 35 while keeping the pressing inclined surface 36 and the engaging inclined surface 32 in contact with each other and holding the wedge moving member 35 at a predetermined position. The connecting shaft 11 can be pulled by the cooperation of the inclined surfaces (32, 36).
[0103]
In addition, the same code | symbol is attached | subjected about the component which is common in the case of 1st Embodiment (FIGS. 1-8, FIGS. 14-24), and the description is simplified or abbreviate | omitted.
[0104]
A male screw portion 14 is formed as an engaging portion at the base end portion 12 of the connecting shaft 11. The male thread portion 14 of the connecting shaft 11 is fixed via a stud bolt 8 and a nut member 85 planted in the foundation concrete 6.
[0105]
In this configuration, when the positioning member (position adjusting screw member 43) provided on a predetermined side surface (for example, the inner side surface) of the pillar 1 is operated to move the wedge moving member 35, the wedge moving member 35 is moved. The connecting shaft 11 is pulled by the cooperation of the pressing inclined surface 36 and the engaging inclined surface 32 of the connecting shaft 11. Thereby, the pillar 1 and the foundation body 5 are tightly coupled. In this way, the column 1 and the beam 3 are tightly coupled by operating the positioning and holding means (43) provided on a predetermined side surface portion (for example, the inner side surface portion) of the column 1, so that the column 1 is mounted after the wooden building is completed. When the wood is thinned, both the members (1, 3) can be easily retightened.
[0106]
Furthermore, since the connecting shaft 11 is accommodated in the pillar 1, even if the pillar 1 rolls due to a large earthquake or the like, a large bending moment or tensile force does not act on the connecting shaft 11, so that the damage is minimized. be able to. Furthermore, even if the column 1 and the base body 5 are tightly coupled, a large eccentric load does not act on the butt coupling portion (joint) of both members (1, 5), and the coupling strength is reduced. There is nothing.
[0107]
Therefore, when it is easy to handle and the wood is thinned, the pillar 1 and the base body 5 can be easily connected again.
[0108]
Further, since the pillar 1 and the foundation body 5 are tightly connected by turning the position adjusting screw member 43 on the pillar 1 side, the foundation packing 9 is placed between the foundation concrete 6 and the base 7 unlike the conventional example shown in FIG. There is no need to provide a gap. Therefore, the foundation body 5 in which the base 7 is in close contact with the foundation concrete 6 can be used, and the workability can be further improved. Of course, in order to improve ventilation, it is free to interpose the base packing 9.
[0109]
(Third embodiment)
[0110]
A third embodiment is shown in FIGS.
[0111]
In the joint reinforcement structure for a wooden building according to the third embodiment, a universal joint 50 is interposed between the engaging portion (14) of the connecting shaft 11 and the foundation body 5, and the universal joint 50 is configured as a foundation body. 5 is provided with a lower main body 51 that can be displaced by being displaced relative to the stud 8 and a locking portion that is fixed to the lower main body 51 and can lock the engaging portion (14) of the connecting shaft 11. The upper main body 61 is formed.
[0112]
As shown in FIGS. 11 (A) and 11 (B), the lower main body 51 is formed in a disc shape, and a long hole 52 is formed so as to extend from the central portion toward the outer peripheral portion. The long hole 52 is formed so that the implantation bolt 8 on the base body 5 side can pass therethrough. Accordingly, the lower main body 51 can be displaced in an arbitrary direction within a predetermined range on the plane in a state where the stud bolt 8 is passed through the elongated hole 52. A predetermined number of screw holes 53 for fixing the upper main body 61 are provided in the outer peripheral portion of the lower main body 51.
[0113]
On the other hand, as shown in FIGS. 12A, 12B, and 12C, the upper main body 61 is formed in a thick disk shape, and a locking screw hole 66 is formed in the center thereof. ing. As shown in FIG. 13, both screw members 86 are screwed into the locking screw holes 66 of the upper main body 61, and both screw members 86 are threaded on the connecting shaft 11 via nut members 85. 14.
[0114]
In addition, by aligning the male screw portion 14 of the connecting shaft 11 with the locking screw hole 66 of the upper body 61, the male screw portion 14 of the connecting shaft 11 can be directly connected without using both screw members 86 and the nut member 85. The upper main body 61 may be screwed into and connected to the locking screw hole 66. Further, by forming a female screw portion (not shown) that can be screwed together with the both screw members 86 at the base end portion 12 of the connecting shaft 11, both the connecting shaft 11 and the universal joint 50 can be connected without using the nut member 85. It can be connected via a screw member 86.
[0115]
The upper body 61 is provided with an internal space 62 that opens toward a predetermined portion on the side surface and a predetermined portion on the plane on the lower body 51 side. As shown in FIG. 13, through the internal space 62, the nut 89 threadedly engaged with the tip of the stud bolt 8 can be turned on the upper surface of the lower main body 51 to be tightened and unfastened. The upper main body 61 is fixed by screwing a bolt 63 s inserted into the screw through hole 63 into the screw hole 53 of the lower main body 51 and tightening.
[0116]
In such a configuration, the universal joint 50 can be used to fix the studs 8 on the base body 5 side and the connection shaft 11 of the joint reinforcement fitting 10 on the column 1 side in an eccentric state. Therefore, the workability can be further improved.
[0117]
In the first to third embodiments described above, the fastening position adjusting means (47) capable of adjusting the fastening position of the wedge moving member 35 in cooperation with the positioning holding means (43) may be provided. Specifically, as shown in FIG. 24, the tightening position adjusting means is formed on the wedge moving member 35 so that it is screwed into the screw portion 39 so that the tip portion can come into contact with the connecting shaft 11 portion in the arm 21 and the rear. The end portion is formed of a tightening position adjusting screw 47 that can come into contact with the position adjusting screw member 43.
[0118]
Here, when the screw member 43 for position adjustment is rotated in the tightening direction with the hexagon wrench 82, the screw member 43 advances while rotating (that is, moves toward the central portion in the axial direction of the arm 21). When the pressing surface 43 a of the position adjusting screw member 43 comes into contact with the rear end portion of the tightening position adjusting screw member 47, the position adjusting screw member 43 presses the wedge moving member 35 and It advances until the tip part comes into contact with the connecting shaft 11 and is stopped. As a result, the connecting shaft 11 is pulled by the wedge moving member 35 via the engaging inclined surface 32 and positioned at the initial pulling position P1.
[0119]
In this embodiment, the tightening position adjustment is performed so that the leading end of the wedge moving member 35 is aligned with the left end of the connecting shaft 11 in FIG. 24 when the leading end of the tightening position adjusting screw 47 contacts the connecting shaft 11. The mounting position of the screw 47 is adjusted. By adjusting the binding position of the wedge moving member 35 in this way, for example, when a large earthquake occurs and a large lateral load is applied to the beam 3 (arm 21) in the arrow Q direction, the tip of the arm is It is possible to avoid a situation where the inner surface 21i of the 21 is strongly pressed and damaged.
[0120]
When the connecting shaft 11 is positioned again at the pulling position P2 in order to fasten the column 1 and the beam 3 again, the tightening position adjusting screw 47 is removed after the position adjusting screw member 43 is removed. Then, after the position adjusting screw member 43 is attached again, the connecting shaft pulling means 31 is operated to pull the connecting shaft 11.
[0121]
Here, the wedge moving member 35 suddenly breaks down when the tip of the pressing portion 37 is missing, and the engagement relationship with the engagement inclined surface 32 of the connecting shaft 11 is released (that is, the wedge moving member 35 is released). However, since the chipping at the tip of the wedge moving member 35 is avoided as described above, the structural strength of the joint reinforcing bracket 10 can be increased.
[0122]
Further, in the first to third embodiments described above, for example, as shown in FIG. 22, a high friction surface 75 may be formed by adding a notch (for example, knurling) to a predetermined outer peripheral portion of the connecting shaft 11. As a result, when the connecting shaft 11 is assembled or transported, if the high friction surface 75 is held by hand, the hand is not slid and dropped, and it is easy to turn. Therefore, it becomes easier to handle.
[0123]
Further, the high friction surface 76 may be formed by notching (for example, knurling) the outer peripheral portion of the arm 21. As a result, the arm 21 is firmly fitted into the arm mounting hole 4 of the beam 3, so that the connecting shaft 11 is pulled in a more stable state by the connecting shaft pulling means 31 using the arm 21 as a scaffold, and the column 1 and the beam 3. And can be tied.
[0124]
【The invention's effect】
According to the first aspect of the present invention, the connecting hole is formed by penetrating the column in the lateral direction and the butted end face of the beam is pierced by a predetermined length, and the arm is formed on the side surface of the beam so as to be orthogonal to the connecting hole. A connecting shaft formed with a mounting hole, inserted into the connecting hole and provided with a locking portion for locking with the pillar at the base end, and inserted into the arm mounting hole of the beam and in the longitudinal central portion A joint arm comprising a cylindrical arm with a through-hole for passing the connecting shaft through and a connecting shaft pulling means capable of pulling the connecting shaft using the arm as a scaffold, and the connecting shaft pulling means comprises: A wedge moving member having an engaging inclined surface formed on the connecting shaft, a pressing inclined surface movably attached to the arm and slidably contactable with the engaging inclined surface, and the wedge moving member engaged with the pressing inclined surface. Positioning maintenance that can be held in place by moving it while making contact with the inclined surface And means, because it is formed to be pulling the connecting shaft by the cooperation of both inclined surfaces can Tightened the columns and beams by actuating the positioning and holding means of the beam side. Therefore, when the pillar and the beam are thinned after completion of the wooden building, the pillar and the beam can be easily re-coupled without removing the outer plate attached to the pillar. It can also be applied to two-way insertion, three-way insertion, and four-way insertion. Therefore, when the application range is wide and easy to handle, and the wood is thinned, the columns and beams (or the columns and foundations) can be easily connected again.
[0125]
According to the second aspect of the present invention, the main body attached to the connecting shaft portion to be inserted into the connecting hole of the beam, and a retaining member comprising a predetermined number of the main body and a claw portion that can be opened in the connecting hole of the beam. A claw member and an actuating member that engages with a retaining claw member when the connecting shaft is pulled by the connecting shaft pulling means to open the claw portion and bite into the inner surface of the connecting hole of the beam; In addition to providing the same effect as in the case of the invention of claim 1, the beam can be used even if an excessive roll occurs due to an unimaginable earthquake. It is possible to prevent the house from being completely destroyed by preventing it from moving away.
[0126]
According to the invention of claim 3, a main body provided between the rear end portion of the connecting shaft inserted into the connecting hole of the beam and the column, and a predetermined number of the main body are formed and can be opened in the connecting hole of the beam. When the tension of the connecting shaft is released and the connecting shaft is released from the connecting hole of the beam, it will be engaged with the retaining claw member. In addition to providing a connecting shaft slip-off prevention body comprising an actuating member capable of opening the claw portion and biting into the butt end surface of the column, the same effect as in the case of the inventions of claims 1 and 2 can be obtained, Even in the event of an excessive roll due to an unimaginable earthquake, the house is completely collapsed by preventing the beam that is tightly connected to the pillar via the connecting shaft from separating from the pillar. Can be prevented.
[0127]
According to the invention of claim 4, the connecting end is formed by drilling the end face of the column by a predetermined length, and the arm mounting hole is formed in the predetermined side surface of the column so as to be orthogonal to the connecting hole. And a connecting shaft that is inserted into the connecting hole of the column and has an engaging portion for engaging with the implantation bolt on the base body side at the lower end, and inserted into the arm mounting hole of the column and in the center in the longitudinal direction. A connection arm tensioning means comprising a cylindrical arm having a through-hole for passing the connecting shaft through the part, and a connecting shaft pulling means capable of pulling the connecting shaft by using this arm as a scaffold. A wedge moving member having an engaging inclined surface formed on the connecting shaft, a pressing inclined surface movably attached to the arm and slidably contactable with the engaging inclined surface, and the wedge moving member as a pressing inclined surface. Can be moved in contact with the engaging slope and held in place And a positioning and holding means, because it is formed to be pulling the connecting shaft by the cooperation of both inclined surfaces, can be easily Tightened again and the pillar and the base body when the pillar is thin wood. In addition, even when the pillar rolls due to a large earthquake, the degree of damage to the joint can be minimized. Further, even if the column and the base body are tightly coupled, a large eccentric load does not act on the butt joint (joint) of both members. Therefore, when the column is easy to handle and the column is worn, the column and the base body can be easily coupled again.
[0128]
According to the invention of claim 5, a universal joint is interposed between the engaging portion of the connecting shaft and the base body, and the universal joint can be locked by being displaced relative to the implantation bolt on the base body. Since it is formed from a lower main body and an upper main body that is fixed to the lower main body and is provided with a locking portion that can lock the engaging portion of the connecting shaft, an implant bolt on the base body side using a universal joint And the connecting shaft of the column-side joint reinforcement fitting can be fixed in an eccentric state. Accordingly, the same effects as those of the invention of claim 4 can be obtained, and the workability can be further improved.
[0129]
According to the sixth aspect of the present invention, since the tightening position adjusting means capable of adjusting the tightening position of the wedge moving member in cooperation with the positioning holding means is provided, the same effect as in the case of the first to fifth aspects of the present invention can be obtained. For example, when the inclination angle of the engagement inclined surface of the connecting shaft is changed, the binding position of the wedge moving member can be adjusted so that the structural strength is maximized.
[0130]
According to the invention of claim 7, since the connecting shaft is formed from a plurality of connecting shaft components screwed in the axial direction, the same effect as in the case of the invention of claims 1 to 6 can be obtained, -The length of the connecting shaft can be easily changed according to the beam size and mounting conditions. Therefore, it becomes easier to handle.
[0131]
According to the invention of claim 8, since the high friction surface is formed by notching the predetermined outer peripheral portion of the connecting shaft, the same effect as in the case of the invention of claims 1 to 7 can be obtained, and the connecting shaft is assembled. If you have a high-friction surface in your hand when transporting or carrying it, it will be easier to turn it while it will not slip off your hand. Therefore, the usability can be further improved.
[0132]
According to the invention of claim 9, since the high friction surface is formed by notching the outer peripheral portion of the arm, the same effect as in the case of the invention of claims 1 to 8 can be obtained, and the arm is attached to the arm of the beam. Since the arm is firmly fitted into the hole, the connecting shaft can be pulled in a more stable state by using the arm as a scaffold, and can be tightened.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view for explaining a first embodiment of the present invention.
FIG. 2 is a cross-sectional view for similarly explaining a pulling operation of a connecting shaft.
FIG. 3 is a cross-sectional view for explaining a re-pulling operation of the connecting shaft in the same manner.
FIG. 4 is a perspective view for explaining an attachment mode.
FIG. 5 is also a view for explaining a connecting shaft.
FIG. 6 is also a diagram for explaining an arm.
FIG. 7 is a view for explaining a wedge moving member.
FIG. 8 is a view showing a state in which the right and left side surfaces of the column are butt-joined using two joint reinforcement fittings.
FIG. 9 is also a cross-sectional view for explaining a second embodiment of the present invention.
FIG. 10 is a perspective view for explaining a universal joint.
FIG. 11 is also a view for explaining a lower main body of the universal joint.
FIG. 12 is a view for explaining the upper body of the universal joint.
FIG. 13 is a cross-sectional view showing a state where a column and a base body are tightly coupled using a universal joint.
FIG. 14 is also a view for explaining connecting shaft components.
FIG. 15 is a cross-sectional view for explaining a beam drop prevention body and a connecting shaft prevention body.
FIG. 16 is also a view for explaining a beam drop prevention body.
FIG. 17 is also a view for explaining the operation of the beam drop prevention body.
FIG. 18 is a cross-sectional view for explaining a connecting shaft blocking body.
FIG. 19 is a cross-sectional view for explaining the operation of the connecting shaft blocking body.
FIG. 20 is a perspective view for explaining a state in which the connecting shaft is fixed to the column using a fixing arm.
FIG. 21 is a view for explaining a fixing arm, similarly;
FIG. 22 is a cross-sectional view for explaining a state in which beams are connected to both side surfaces of a column using fixing arms and joint reinforcement fittings.
FIG. 23 is a cross-sectional view for explaining the inside of the beam.
FIG. 24 is a cross-sectional view for explaining the tightening position adjusting means.
FIG. 25 is a view similarly showing a state in which the joint is reinforced using the joint reinforcement fitting.
FIG. 26 is a cross-sectional view for explaining the engagement relationship between the base end portion of the connecting shaft and the fixing arm, similarly;
FIG. 27 is a cross-sectional view for explaining a modified example.
FIG. 28 is a view for explaining a conventional wooden building joint reinforcing structure (1).
FIG. 29 is a view for explaining a conventional joint reinforcement structure for wooden buildings (2).
FIG. 30 is a view for explaining a conventional joint reinforcement structure for a wooden building (3).
[Explanation of symbols]
1 pillar
2 Connecting hole
3 beams
4 Arm mounting holes
5 Basic body
10 Joint reinforcement bracket
11 Connecting shaft
12 Base end
21 arm
22 Through hole
31 Connecting shaft tension means
32 Engagement inclined surface
35 Wedge moving member
36 Pressing inclined surface
43 Position adjusting screw member (positioning holding means)
47 Tightening position adjusting screw
50 universal joints
51 Lower body
61 Upper body
75 High friction surface
76 High friction surface
121 Beam dropout prevention body
122 Claw member for retaining
123 body
124 Claw
125 Actuating member
131 Connecting shaft stopper
132 Claw member for retaining
133 body
134 Claw
135 Actuating member

Claims (9)

柱と梁の突き合せ結合部を補強する木造建物用仕口補強構造であって、
柱を横方向に貫通するとともに梁の突き合せ端面を所定長さだけ穿って連結用穴を形成し、梁の側面部に連結用穴と直交するようにアーム取付用穴を形成し、連結用穴に挿入されかつ基端部に柱と係止するための係止部が設けられた連結軸と、梁のアーム取付用穴に挿入されかつ長手方向中央部に連結軸を通すための通し穴が開けられた筒状のアームと、このアームを足場として連結軸を引っ張り可能な連結軸引張り手段とからなる仕口補強金具を備え、
連結軸引張り手段が、連結軸に形成された係合傾斜面と、アーム内に移動可能に取付けられかつ係合傾斜面と摺接可能な押圧傾斜面を有する楔移動部材と、この楔移動部材を押圧傾斜面と係合傾斜面とを接触させつつ移動させて所定位置に保持可能な位置決め保持手段とを含み、両傾斜面の協働によって連結軸を引張り可能に形成されたことを特徴とする木造建物用仕口補強構造。It is a joint reinforcement structure for wooden buildings that reinforces the butt joint of columns and beams,
Crossing the column in the horizontal direction and drilling the end face of the beam by a predetermined length to form a connecting hole, and forming a mounting hole on the side of the beam so as to be orthogonal to the connecting hole. A connecting shaft that is inserted into the hole and has a locking portion for locking with the pillar at the base end portion, and a through hole that is inserted into the arm mounting hole of the beam and passes the connecting shaft in the longitudinal center portion It is provided with a joint reinforcing bracket consisting of a cylindrical arm opened and a connecting shaft pulling means capable of pulling the connecting shaft using this arm as a scaffold,
And a wedge moving member having an engaging inclined surface formed on the connecting shaft, a pressing inclined surface that is movably attached to the arm and is slidable in contact with the engaging inclined surface, and the wedge moving member. Positioning holding means capable of holding the pressing inclined surface and the engaging inclined surface in contact with each other and holding them at a predetermined position, wherein the connecting shaft can be pulled by the cooperation of both inclined surfaces. Reinforcement structure for wooden buildings. 前記梁の連結用穴に挿入される前記連結軸部位に取付けられた本体およびこの本体に所定個数形成され前記梁の連結用穴内で開き可能な爪部からなる抜け止め用爪部材と、前記連結軸引張り手段によって前記連結軸が引っ張られた場合には抜け止め用爪部材と係合して爪部を開かせて前記梁の連結用穴の内面に喰い込ませ可能な作動部材とからなる梁抜け阻止体を設けた請求項１記載の木造建物用仕口補強構造。A main body attached to the connecting shaft portion to be inserted into the connecting hole of the beam, a retaining claw member formed of a predetermined number of the main body and openable in the connecting hole of the beam; and the connection A beam comprising an actuating member that engages with a retaining claw member when the connecting shaft is pulled by a shaft pulling means to open the claw portion and bite into the inner surface of the coupling hole of the beam. The joint reinforcing structure for a wooden building according to claim 1, further comprising a slip-off preventing body. 前記梁の連結用穴に挿入される前記連結軸の後端部と前記柱との間に設けられた本体およびこの本体に所定個数形成され梁の連結用穴内で開き可能な爪部からなる抜け止め用爪部材と、連結軸の引張り状態が解除されて当該連結軸が梁の連結用穴から抜け出る方向へ移動しようとした場合には抜け止め用爪部材と係合して爪部を開かせて柱の突合せ端面に喰い込ませ可能な作動部材とからなる連結軸抜け阻止体を設けた請求項１又は請求項２記載の木造建物用仕口補強構造。A main body provided between a rear end portion of the connecting shaft inserted into the connecting hole of the beam and the pillar, and a nail portion formed on the main body and formed with a predetermined number of claws that can be opened in the connecting hole of the beam. When the tension state of the locking claw member and the connecting shaft is released and the connecting shaft tries to move in the direction of coming out of the connecting hole of the beam, the locking claw member is engaged to open the claw portion. The joint reinforcing structure for a wooden building according to claim 1 or 2, further comprising a connecting shaft slip-off preventing body comprising an actuating member capable of being bitten into a butt end face of a pillar. 柱と基礎体との突き合せ結合部を補強する木造建物用仕口補強構造であって、
柱の突き合せ端面を所定長さだけ穿って連結用穴を形成するとともに、当該柱の所定側面部に連結用穴と直交するようにアーム取付用穴を形成し、
柱の連結用穴に挿入されかつ下端部に基礎体側の植込ボルトと係止するための係合部が設けられた連結軸と、柱のアーム取付用穴に挿入されかつ長手方向中央部に連結軸を通すための通し穴が開けられた筒状のアームと、このアームを足場として連結軸を引っ張り可能な連結軸引張り手段とからなる仕口補強金具を備え、
連結軸引張り手段が、連結軸に形成された係合傾斜面と、アーム内に移動可能に取付けられかつ係合傾斜面と摺接可能な押圧傾斜面を有する楔移動部材と、この楔移動部材を押圧傾斜面と係合傾斜面とを接触させつつ移動させて所定位置に保持可能な位置決め保持手段とを含み、両傾斜面の協働によって連結軸を引張り可能に形成されたことを特徴とする木造建物用仕口補強構造。It is a joint reinforcement structure for wooden buildings that reinforces the butt joint between the pillar and the foundation,
While forming a connecting hole by drilling the end face of the column for a predetermined length, forming an arm mounting hole so as to be orthogonal to the connecting hole on the predetermined side surface of the column,
A connecting shaft that is inserted into the connecting hole of the column and has an engaging portion for engaging with the implantation bolt on the base body side at the lower end, and inserted into the arm mounting hole of the column and in the center in the longitudinal direction A joint arm comprising a cylindrical arm with a through hole for passing the connecting shaft, and a connecting shaft pulling means capable of pulling the connecting shaft using this arm as a scaffold,
And a wedge moving member having an engaging inclined surface formed on the connecting shaft, a pressing inclined surface that is movably attached to the arm and is slidable in contact with the engaging inclined surface, and the wedge moving member. Positioning holding means capable of holding the pressing inclined surface and the engaging inclined surface in contact with each other and holding them at a predetermined position, wherein the connecting shaft can be pulled by the cooperation of both inclined surfaces. Reinforcement structure for wooden buildings. 前記連結軸の係合部と前記基礎体との間に自在継手を介装し、この自在継手が、基礎体上で植込ボルトと相対変位させて係止可能な下部本体と、この下部本体に固定され前記連結軸の係合部を係止可能な係止部が設けられた上部本体とから形成されたことを特徴とする請求項４記載の木造建物用仕口補強構造。A universal joint is interposed between the engaging portion of the connecting shaft and the base body, and the universal joint can be locked by being displaced relative to the implantation bolt on the base body, and the lower body 5. The joint reinforcing structure for a wooden building according to claim 4, further comprising: an upper main body provided with a locking portion that is fixed to the locking shaft and can lock the engaging portion of the connecting shaft. 前記位置決め保持手段と協働して前記楔移動部材の緊結位置を調節可能な緊結位置調節手段を設けた請求項１〜請求項５までのいずれか１項に記載の木造建物用仕口補強構造。The joint reinforcement structure for a wooden building according to any one of claims 1 to 5, further comprising a fastening position adjusting means capable of adjusting a fastening position of the wedge moving member in cooperation with the positioning holding means. . 前記連結軸を軸線方向にねじ結合された複数個の連結軸構成要素から形成した請求項１〜請求項６までのいずれか１項に記載の木造建物用仕口補強構造。The joint reinforcing structure for a wooden building according to any one of claims 1 to 6, wherein the connecting shaft is formed from a plurality of connecting shaft components screwed in the axial direction. 前記連結軸の所定外周部分に刻みを付けて高摩擦面を形成した請求項１〜請求項７記載までのいずれか１項に記載の木造建物用仕口補強構造。The joint reinforcement structure for wooden buildings according to any one of claims 1 to 7, wherein a high friction surface is formed by notching a predetermined outer peripheral portion of the connecting shaft. 前記アームの外周部分に刻みを付けて高摩擦面を形成した請求項１〜請求項７記載までのいずれか１項に記載の木造建物用仕口補強構造。The joint reinforcing structure for a wooden building according to any one of claims 1 to 7, wherein a high friction surface is formed by notching the outer peripheral portion of the arm.
JP2000136066A 1999-09-10 2000-05-09 Joint reinforcement structure for wooden buildings Expired - Fee Related JP3766905B2 (en)

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JP2000136066A JP3766905B2 (en) 1999-09-10 2000-05-09 Joint reinforcement structure for wooden buildings

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JP2007262800A (en) * 2006-03-29 2007-10-11 Nice Corp Portal rigid-frame structure member and portal rigid-frame structure using this member
JP2010024628A (en) * 2008-07-15 2010-02-04 Hirata Kensetsu:Kk Building joint metal, and method and tool for pulling out press-in member
CN113047442B (en) * 2021-03-24 2022-08-30 四川玖壹建设工程有限公司 House structure and construction method thereof
CN114541579B (en) * 2022-03-08 2023-10-20 金华鹏毅通信工程有限公司 Combined steel structure of parking garage and communication tower

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