JP2004036182A

JP2004036182A - Fixing structure of sill for building

Info

Publication number: JP2004036182A
Application number: JP2002193657A
Authority: JP
Inventors: Hiromitsu Ishikawa; 石川　博光
Original assignee: Nippon Light Metal Co Ltd
Current assignee: Nippon Light Metal Co Ltd
Priority date: 2002-07-02
Filing date: 2002-07-02
Publication date: 2004-02-05
Anticipated expiration: 2022-07-02
Also published as: JP3969219B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a sill for a building in which a related sill can be fixed accurately to a predetermined place of a foundation even when an anchor bolt is displaced from a place, where the sill is installed, and a corrosion or the like is prevented. <P>SOLUTION: The fixing structure of the sill for the building has a base plate 2 being arranged on a foundation K and having a recessed section 4 and a through-hole 5, a washer 20 being rotatably arranged in the recessed section 4 and having an elliptic deformed-bolt through-hole 22 and a sill body 10 being composed of an aluminum alloy, being placed on the base plate 2 and receiving the washer 20 and having a washer through-hole 18 having a width W in the indoor or outdoor direction approximately the same as the outside diameter of the washer 20 on a base 16. The anchor bolt 24 disposed in upright from the foundation K is penetrated to the through-hole 5 of the base plate 2 and the through-hole 22 of the washer 20 and clamped to a nut 25, the base plate 2 is fixed onto the top face Ku of the foundation K by the washer 20, the upper section of the washer 20 is penetrated into the through-hole 18 of the sill body 10, the sill body 10 is positioned on the base plate 2 and the sill body 10 and the base plate 2 are fixed by bolts 40 at four corners. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、基礎の上面に沿って配置され且つアンカーボルトへの固定および柱の固定が精度良く行える建物用土台の固定構造に関する。尚、本明細書において、基礎は、布基礎、べた基礎、または独立基礎などを含む。
【０００２】
【従来の技術】
一般に、コンクリートからなる基礎の上面に沿って固定される建物用土台には、在来工法やプレハブ工法においても、断面角形の木材からなる土台が広く用いられている。かかる木材製の土台は、基礎の上方に立設するアンカーボルトにより固定されると共に、柱や間柱などもかかる土台を介して立設されている。
このため、土台の固定位置は正確さが求められ、完成した基礎に基準箇所を設け、墨出しにより土台の設置すべき位置を決めている。
また、木製土台においては、係る土台の設置位置が決まった際に、その設置位置に当該土台が納まるように、所定の位置からアンカーボルトがずれている距離を測定し、その結果を基にして上記土台に上記アンカーボルトの位置に合わせた孔明けをして上記土台を固定し、それに柱などを固定していた。
【０００３】
この結果、従来の木材製の建物用土台には、以下のような問題があった。
（１）基礎に埋設され且つその上面から立設するアンカーボルトの立設位置がバラ付き易いため、個々の現場ごとに現場合わせによって、係るボルトの通し孔を土台に調整して孔明けする必要がある。
（２）白蟻による食害を受け易く、湿気によって腐食し易い。
（３）吸湿および放湿を繰り返すことにより、土台の断面寸法が経年変化するため、建物に歪みを招来させる。
（４）重量が大きいため、現場での作業性が低く、コスト高になり易い。
（５）加工精度が低く且つ寸法が狂いやすいため、モジュールユニット化が困難で建物の施工性が低下する。
（６）柱などとの接合部に複雑で熟練を要する継手構造の加工が必要となる。
（７）木材伐採による環境破壊につながり易い。
【０００４】
【発明が解決すべき課題】
本発明は、以上において説明した従来の技術おける問題点を解決し、土台の設置位置に対してアンカーボルトの位置がずれて立設されても、建物用土台を確実に基礎の所定位置に正確に固定できると共に、前記従来の木製の土台に伴う問題点を解決可能とする建物用土台の固定構造を提供する、ことを課題とする。
【０００５】
【課題を解決するための手段および発明の効果】
本発明は、上記課題を解決するため、少なくとも土台本体をアルミニウム合金の押出形材により形成する共に、所定の土台固定位置に対してアンカーボルトの位置がずれていても、係る土台本体の屋内・屋外方向のずれおよび長手方向のずれを吸収するように、土台本体と基礎との間に調整機能を有するワッシャを用いる、ことに着想して成されたものである。
【０００６】
即ち、本発明の建物用土台の固定構造（請求項１）は、基礎の上面の所定位置に配置され且つ透孔を有する複数のベース板と、上記ベース板の上面において基礎の上面との間に係るベース板を固定し、中心部から周辺寄りに沿った平面視が長円形または楕円形などの異形ボルト貫通孔あるいは中心が周辺寄りに位置する円形のボルト貫通孔を有するワッシャと、アルミニウム合金からなり、上記ベース板の上に載置され且つ上記ワッシャを受け入れるワッシャ貫通孔を底面に有する土台本体と、を備え、上記基礎に埋設され且つ係る基礎の上面から垂直に立設するアンカーボルトの雄ネジ部を、上記ベース板の透孔に貫通させ、更に上記ワッシャのボルト貫通孔に貫通させ且つナットと締結して、上記ワッシャによってベース板を上記基礎の上面に固定し、上記土台本体のワッシャ貫通孔に上記ワッシャを貫通して当該土台本体を、複数のベース板に跨って位置決めすると共に、係る土台本体と上記ベース板とをボルトなどにより固定する、ことを特徴とする。
【０００７】
これによれば、基礎の上面における土台固定位置に対しずれてアンカーボルトが立設されていたとしても、係るボルトの雄ネジ部を上記ベース板の大きな透孔やワッシャの（異形）ボルト貫通孔に貫通して、更にベース板の上で係るワッシャが固定されるため、当該ワッシャは回転不能となる。また、ワッシャの（異形）ボルト貫通孔に上記ボルトの雄ネジ部を貫通させると、当該ワッシャは、これを適宜回転することにより、上記アンカーボルトの位置ずれを吸収して、ベース板を土台設置位置と一致した位置に固定することができる。
しかも、ワッシャによりベース板が所定位置に固定されると、係るワッシャを土台本体の底面のワッシャ貫通孔に挿入することにより、係る土台本体を基礎の所定位置に正確に位置決めすることができる。
【０００８】
従って、従来のように、現場における各部位ごとにボルト孔を土台に穿孔する必要がなくなるため、土台のモジュールユニット化が容易となって建物の施工性が向上する。しかも、少なくとも土台本体は、アルミニウム合金からなるため、前記食害、腐食、および吸湿も防止できる。
尚、上記ワッシャ貫通孔には、屋内・屋外方向の幅が上記ワッシャの外径とほぼ同じかやや大きい矩形の孔のほか、係る幅を直径とする円形孔も含まれる。また、係る貫通孔は、土台本体の底面に開口する孔のほか、係る底面に開口する凹溝として形成しても良い。上記柱には、竪枠や管柱のほか、間柱も含まれる。
【０００９】
また、前記土台本体の上面には、水平方向のピン挿通孔を有する柱支持筒が固定される、建物用土台の固定構造（請求項２）も含まれる。
これによれば、土台本体の上に柱の下端部に挿入される柱支持筒を固定できるため、所定の位置に柱を迅速且つ精度良く立設することが可能となる。
更に、本発明には、前記土台本体は、アルミニウム合金の押出形材により形成されてなる、建物用土台の固定構造（請求項３）も含まれる。
これによれば、従来の木製の土台のように重量が大きくならず軽量化できると共に、前記ワッシャの上部を受け入れる上記ワッシャ貫通孔および柱支持筒を固定するボルトの通し孔を容易且つ精度良く形成することが可能となる。
尚、上記押出形材には、アルミニウム合金を押出成形した状態（生地材）である他、表面に陽極酸化皮膜または係る皮膜と塗装の双方を施した形態も含まれる。
【００１０】
更に、本発明には、前記土台本体は、前記底面、上面、屋内側と屋外側の一対の側壁、およびこれらに囲まれた中空部を含み、且つ屋内および屋外方向に沿った３つ以上の中空部を備え、中間の中空部における上記底面に前記ワッシャ貫通孔が形成されている、建物用土台の固定構造（請求項４）も含まれる。
これによれば、土台本体に加わる建物の荷重を充分に支持できる強度が得られると共に、屋内・屋外方向の中間の中空部の底面に前記ワッシャの上部を受け入れる前記ワッシャ貫通孔が容易に形成でき、且つ屋内・屋外寄りの中空部を当該土台本体と前記ベース板とを連結するボルトの進入路および収納に活用することができる。尚、後述するように、上記中間の中空部を幅広くし、且つ上記屋内・屋外寄りの中空部を幅狭くすることにより、上記ワッシャ貫通孔の形成が一層容易となる。また、何れかの中空部を活用して、長手方向に連続して隣接する土台本体同士を接続する接続材を嵌合して連結することも可能である。
【００１１】
また、本発明には、前記ベース板の真上において前記柱支持筒が立設している、建物用土台の固定構造（請求項５）も含まれる。
これによれば、土台本体の上面に立設される柱の重量およびこれを介して垂直に加わる建物の荷重を、当該土台本体を介して係る柱の直下に位置するベース板によって、強固に支持することが可能となる。
【００１２】
更に、本発明には、前記柱支持筒は、前記土台本体の上面に固定され、係る柱支持筒に形成されるピン挿通孔は、前記基礎の長手方向にほぼ沿っている、建物用土台の固定構造（請求項６）も含まれる。
これによれば、土台本体の上面に立設すべき柱を、その底面の中心部付近から垂直に設けた支持穴に、上記土台本体の上面に固定した柱支持筒を挿入し、且つドリフトピンを当該柱の水平孔および上記ピン挿通孔に貫通することにより、係る柱を抜け出し不能にして土台本体上に強固に固定することができる。しかも、上記ピン挿通孔は、基礎の長手方向にほぼ沿っているため、打ち込まれたドリフトピンの端面が外部に露出したり、腐食する事態を予防することもできる。
尚、上記柱支持筒は、アルミニウム合金のパイプや鋼管などを用いるほか、断面円形のほか断面角形などのパイプを用いても良い。また、パイプでない中実材を用いても良い。但し、耐食性の観点からアルミニウム合金のパイプや中実材を用いることが望ましく、円形のパイプを用いればネジ切り加工も容易となる。
【００１３】
加えて、本発明には、前記ベース板は、前記上向きの凹部を有する断面形状のアルミニウム合金からなる押出形材を、その押出方向に沿って所定の長さで切断し、且つ上記凹部において前記透孔を穿孔したものであり、前記ワッシャの外径は上記上向きの凹部の幅とほぼ同じかやや小さく係る凹部内で回転可能な寸法である、建物用土台の固定構造（請求項７）も含まれる。
これによれば、ベース板がアルミニウム合金の押出形材で形成されているため、基礎の上面に直に接触し且つ建物の床下における湿気に晒され易い当該ベース板が腐食しにくくなる。また、ベース板は、上向きの凹部を有する断面形状であり、前記ワッシャの外径は上記凹部の幅とほぼ同じかやや小さく、係る凹部内で係るワッシャが回転可能な寸法であるため、精度良く土台を設置できると共に、前記土台本体とのボルトなどによる固定も容易となる。
【００１４】
【発明の実施の形態】
以下において、本発明の実施に好適な形態を図面と共に説明する。
図１（Ａ）は、本発明の固定構造により、基礎Ｋの上面Ｋｕに沿って固定した建物用土台１を示す。係る建物用土台１は、図１（Ａ）に示すように、基礎Ｋの上面Ｋｕに配置される複数のベース板２と、係る複数のベース板２の上に跨って基礎Ｋの長手方向に沿って固定される土台本体１０と、を含む。
柱Ｈを固定する円筒形の柱支持筒３０は、上記土台本体１０の上面１２の上で且つ上記ベース板２の真上の位置に固定される。係る柱支持筒３０の本体３２には、上記基礎Ｋの長手方向に沿って水平に貫通する上下一対のピン挿通孔３４が形成されている。尚、柱支持筒３０は、中実材の円柱形の形態であっても良い。
【００１５】
図１（Ｂ）に示すように、木製の柱Ｈは、その底面５０における中心部に支持穴５２が垂直に設けられ、図１（Ａ），（Ｂ）に示すように、この支持穴５２を中央で貫通する上下一対の水平孔５４が水平に設けられている。
図１（Ａ）中の太い矢印で示すように、上記柱Ｈを土台本体１０の上面１２に近付け、上記柱支持筒３０を係る柱Ｈの支持穴５２に挿入した後、互いに水平に連通する柱支持筒３０のピン挿通孔３４と柱Ｈの水平孔５４とに、アルミニウム合金または鋼材からなり且つ先端にテーパを付したドリフトピン５６を打ち込む。この結果、土台本体１２の上面１２上に、上記柱Ｈを抜け出し不能にして垂直に支持し且つ固定することができる。
【００１６】
前記ベース板２は、図２に示すように、全体が偏平な矩形の板状の本体３と、基礎Ｋの屋内・屋外方向に中間に形成した上向きで且つ矩形の浅い凹部４と、係る凹部４の両側に浅い段部７を介して位置する厚肉部６，６と、を図示で左右方向に沿って有する。このベース板２は、アルミニウム合金（例えばＪＩＳ：Ａ６０６３Ｓ−Ｔ５、またはＡ６０６１Ｓ−Ｔ６）からなり上記各部を有する断面形状の押出形材をその押出方向に沿って所定の長さで切断し、図２に示すように、凹部４の中央に大径の透孔５を、厚肉部６，６の四隅に雌ネジ孔８をそれぞれ設けたものである。凹部４の幅は、後述するワッシャ２０の外径とほぼ同一または若干大きい寸法で、ワッシャ２０は上記凹部４内で回転可能である。
また、前記土台本体１０は、上記同様のアルミニウム合金の押出形材からなり、図２に示すように、平面視が矩形のワッシャ貫通孔１８を有する底面１６、柱支持筒３０を固定する上面１２、これらを接続する屋内側と屋外側の一対の側壁１４、およびこれら囲まれ且つ一対の隔壁１１により３つに仕切られた断面ほぼ矩形の中空部１３，１５を備える。
【００１７】
図２に示すように、上記土台本体１０の底面１６に形成され且つ中央に位置する幅広の中空部１５に開口するワッシャ貫通孔１８における屋内・屋外方向の幅Ｗは、次述するワッシャ２０の外径よりも大きい寸法である。
また、図２に示すように、土台本体１０の上面１２の四隅には、屋外・屋内側寄りで幅狭い中空部１３，１３に通じる通し孔１９がそれぞれ形成され、これらの直下に位置する底面１６には小径の通し孔（図示せず）が形成されている。これらの通し孔１９などは、図２中の矢印で示すように、細長いボルト４０を挿通させ、係るボルト４０の雄ネジ部４４を、ベース板２の各雌ネジ孔８にネジ結合して、係る土台本体１０を上記ベース板２に固定するために使用される。
尚、図２，図３（Ａ）に示すように、土台本体１０の底面１６の屋内側および屋外側には、各側壁１４よりも外側に突出するリブ１７が対称に位置している。係るリブ１７は、土台本体１０の屋内側に図示しない根太受けの支持金具を位置決めしたり、あるいは屋外側に図示しない水切り材を固定する際に活用される。
【００１８】
図２および図３（Ａ），（Ｂ）に示すように、ワッシャ２０は、平面視が円形である本体２１と、その中心部から周辺寄りに延びた長円形の異形ボルト貫通孔２２と、からなる。係るボルト孔２２は、当該ワッシャ２０の中心をその中心寄りの位置において含んでいる。係るワッシャ２０の外径は、図３（Ａ），（Ｂ）に示すように、ベース板２の凹部４の幅および土台本体１０のワッシャ貫通孔１８の幅よりもやや小さく形成されている。このため、ワッシャ２０の下部は、ベース板２の凹部４に回転可能に挿入されると共に、ワッシャ２０の上部は、土台本体１０のワッシャ貫通孔１８に容易に受け入れられる。
【００１９】
尚、上記ワッシャ２０は、例えば前記同様のアルミニウム合金の棒材を所定の幅で輪切りした後、プレスなどで長円形の異形ボルト貫通孔２２を打ち抜く方法や、係るボルト貫通孔２２を内側に有するアルミニウム合金の押出形材を輪切りする方法により形成される。但し、合成樹脂の射出成形などにて形成しても良い。尚また、異形ボルト貫通孔２２は、平面視で楕円形またはカーブした円弧形としても良い。尚更に、図３（Ｂ）において、本発明の理解を容易にするため、ワッシャ２０のハッチングは一部を除き省略してある。
【００２０】
図２および図３（Ａ）に示すように、柱支持筒３０は、円筒形の本体３２と、基礎Ｋの長手方向に沿った上下一対のピン挿通孔３４と、中空部３６の下部に形成した雌ネジ部３８と、を有する。係る柱支持筒３０は、例えばアルミニウム合金のパイプを孔明け加工およびネジ切り加工したものである。
柱支持筒３０は、図２および図３（Ａ）に示すように、土台本体１０の上面１２における屋外・屋内方向の中央に設けた通し孔１２ａおよび角形の座金２６の通し孔２７を、中空部１５側から貫通し、雌ネジ部３８にネジ結合するボルト２８によって、土台本体１０の上面１２に垂直に固定される。即ち、ボルト２８と座金２６とは、ワッシャ貫通孔１８から中空部１５内に挿入され、ボルト頭２９を回転操作することで、柱支持筒３０を予め土台本体１０の上に固定している。
【００２１】
図２および図３（Ａ）に示すように、ボルト４０は、本体４２の下側に雄ネジ部４４およびフランジ４６を有し、本体４２の上端に位置するボルト頭４８には、平面視が正六角形のレンチ用の挿入穴４７が形成されている。係るボルト４０は、通し孔１９から土台本体１０の中空部１３に挿入され、その雄ネジ部４４を低面１６に設けた小径の通し孔１９ａを介して、ベース板２の雌ネジ孔８に進入させ、図示しないレンチにより回転してネジ結合させる。
この結果、図３（Ａ）の右側に示すように、係るボルト４０の中間に位置するフランジ４６が土台本体１０の底面１６に当接することにより、土台本体１０をベース板２の上に固定できる。
【００２２】
土台本体１０は、以下のようにして基礎Ｋの上方に固定される。
図２および図３（Ａ）に示すように、基礎Ｋの上面Ｋｕにベース板２を配置し、その凹部４内にワッシャ２０の下部を配置し、これらの透孔５と異形ボルト貫通孔２２とを貫通したアンカーボルト２４の雄ネジ部にナット２５を締結する。
係る締結に際し、アンカーボルト２４の立設位置が基礎Ｋの上面Ｋｕにおけるベース板２を固定すべき予定位置の中央部から、内外方向ないし左右方向にずれている場合は、予め後述する操作を行う。
次いで、予め上面の辺１２に柱支持筒３０を固定した土台本体１０の底面１６を、ベース板２の厚肉部６，６上に載置する。
【００２３】
この際、ワッシャ２０の上部を、土台本体１０のワッシャ貫通孔１８に受け入れる。係る状態で、各通し孔１９から上記ボルト４０を中空部１３内に挿入し、通し孔１９の直下における底面１６の通し孔１９ａを経て、ベース板２の雌ネジ孔８に、係るボルト４０の雄ネジ部４４をネジ結合する。
この結果、図３（Ａ）に示すように、基礎Ｋ上の所定の位置にワッシャ２０により正確に固定されたベース２上において、柱支持筒３０を有する土台本体１０が、ボルト４０によって固定された本発明の建物用土台の固定構造１が得られる。
【００２４】
ところで、図３（Ａ），（Ｂ）に示すように、基礎Ｋにアンカー部が埋設されたアンカーボルト２４が当該基礎Ｋの上面Ｋｕにおいて、その所定の固定位置により設定されるベース板２の固定位置に対して、屋外・屋内・長手（左右）寄りにずれた位置に立設される場合がある。係るアンカーボルト２４の雄ネジ部を、当該ボルト２４よりも大径であるベース板２の透孔５に貫通させ、係るベース板２を基礎Ｋにおける所定の固定位置に一致するようにセットする。
次に、ベース板２から垂直に突出するアンカーボルト２４の雄ネジ部を、ワッシャ２０の異形ボルト貫通孔２２に貫通させ、図３（Ｂ）中のカーブした矢印で示すように、当該ワッシャ２０を適宜回転して、その下部をベース板２の凹部４内に配置する。
【００２５】
この結果、アンカーボルト２４の設置位置の誤差がベース板２の透孔５の範囲内であれば、係るベース板２は所定の位置に固定できる。これにより、ワッシャ２０によって固定されるベース板２は、土台１の取り付け位置に対して正確な位置で固定される。図３（Ａ）に示すように、係るワッシャ２０の上部を、ワッシャ貫通孔１８に挿入し且つベース板２の上に土台本体１０を載置した後、４本のボルト４０を前述したように、ベース板２の雌ネジ孔８に個別にネジ結合する。
この結果、上記アンカーボルト２４がベース板２の中心部からずれた位置に設置されていても、本発明の固定構造によれば、ベース板２を所定位置に固定できるので、土台本体１０を基礎Ｋの上面Ｋｕにおける設置予定位置に、正確に固定することができる。
【００２６】
本発明の建物用土台の固定構造は、具体的に以下の順序によって形成される。
図４（Ａ）に示すように、ベース板２の固定位置に対して、アンカーボルト２４は基礎Ｋの上面Ｋｕにおいて図示で左手前寄りにずれた位置に立設されている。
次に、図４（Ｂ），（ｂ）に示すように、ベース板２を、基礎Ｋの上面Ｋｕの設置予定位置に位置するように配置し、且つその透孔５にアンカーボルト２４を貫通させる。この際、図４（ｂ）に示すように、アンカーボルト２４は、大径の透孔５における図示で左下寄りにずれた位置で貫通する。
次いで、図４（Ｃ），（ｃ）に示すように、ワッシャ２０の異形ボルト貫通孔２２に上記アンカーボルト２４を貫通させると共に、当該ワッシャ２０を回転ししつ、その下部をベース板２の凹部４内に配置する。
この結果、係るワッシャ２０の中心は、ベース板２の透孔５の中心とは必ずしも一致しないが、概ね透孔５上に位置する。
【００２７】
更に、図４（Ｄ），（ｄ）に示すように、上記ベース板２およびワッシャ２０を貫通したアンカーボルト２４の雄ネジ部に、ナット２５を締結する。この結果、ベース板２は、設置予定位置において固定され、ワッシャ２０の中心位置は、概ねベース板２の透孔５の中心となり、ナット２５の位置はワッシャ２０の中心からずれた位置になるが、係るベース板２は設置予定位置において固定される。
以上の操作を、基礎Ｋの長手方向に沿って立設する複数のアンカーボルト２４に対して行い、それぞれにベース板２およびワッシャ２０を固定する。
図５（Ａ）に示すように、土台本体１０は、予め柱支持筒３０を固定している。即ち、ボルト２８および座金２６を、底面１６に設けたワッシャ貫通孔１８を経て中空部１５に挿入し、上面１２にて屋内・屋外方向の中央で且つ追って上記ベース板２の真上となる位置に柱支持筒３０を立設した後、座金２６と上面１２の通し孔２７，１２ａを貫通するボルト２８を、柱支持筒３０の中空部３６の雌ネジ部３８にネジ結合することで、当該柱支持筒３０を固定している。
【００２８】
次に、基礎Ｋの上面Ｋｕに沿って固定された複数のベース板２およびワッシャ２０の上方に、所望数の柱支持筒３０を予め固定した土台本体１０を持ち上げた後、図５（Ａ）中の太い矢印で示すように、下降させる。
その結果、図５（Ｂ）に示すように、土台本体１０は、ベース板２の厚肉部６，６上にその底面１６が載置される。この際、土台本体１０の屋内側および屋外側の中空部１３，１３の上下に位置する通し孔１９，１９ａが、ベース板２の各雌ネジ孔８と同軸心にして一致するように載置する。
【００２９】
係る状態で、図５（Ｂ）の右側に示すように、ボルト４０を通し孔１９から土台本体１０の中空部１３に挿入し、その雄ネジ部４４を通し孔１９ａを通じてベース板２の雌ネジ孔８にネジ結合する。この際、ボルト４０は、そのボルト頭４８の挿入穴４７に図示しないレンチ用を挿入して回転される。係るボルト４０は、そのフランジ４６が土台本体１０の底面１６に当接して停止する。
その結果、図５（Ｂ）に示すように、ベース板２の固定位置に対してアンカーボルト２４がずれた位置で立設されていても、ベース板２は所定の位置に固定されている。これにより、土台本体１０を係る基礎Ｋの上面Ｋｕに沿って、複数のベース板２を介して所定の位置に正確に固定した本発明の建物用土台の固定構造１を形成することができる。
【００３０】
そして、図６（Ａ），（Ｂ）に示すように、底面５０の中心部の垂直な支持穴５２およびこれを水平に貫通する一対の水平孔５４を有する柱Ｈを、図示しないクレーンなどを用いて、ベース板２の真上における土台本体１０の上方に吊り上げ、上記支持穴５２と柱支持筒３０とを心合わせしつつ当該柱Ｈを下降させる。
その結果、図６（Ｂ）に示すように、柱Ｈの底面５０は、上記土台本体１０の上面１２の上に接触すると共に、柱支持筒３０のピン挿通孔３４，３４と、柱Ｈの水平孔５４，５４とは、互いに同心となって連通する。
【００３１】
係る状態で、図６（Ｂ）中の太い矢印で示すように、ドリフトピン５６を、柱Ｈの水平孔５４、柱支持筒３０のピン挿通孔３４、および反対側の水平孔５４の順で、図示しない治具によって打ち込む。
この結果、図６（Ａ），（Ｂ）に示すように、柱Ｈを、ベース板２の真上における土台本体１０の上に抜け出し不能にして強固に立設することができる。従って、これ以降における建物の施工性や精度を向上させることが可能となる。
尚、上記ドリフトピン５６は、１本のみ、あるいは３本以上を併用しても良く、これらに応じて、柱支持筒３０のピン挿通孔３４や柱Ｈの水平孔５４も同数となるように調整される。
【００３２】
本発明は、以上において説明した形態に限定されるものではない。
例えば、前記ベース板２には、硬質の合成ゴムまたは合成樹脂から成形したものを用いることも可能である。また、図７（Ａ）に示すように、板状の本体３の中央付近に前記凹部４を形成せず透孔５のみを有するベース板２ａとしても良い。
更に、前記ワッシャには、その中心を含み且つ係る中心から自己の中心が周辺寄りにずれている円形のボルト貫通孔を形成しても良い。この場合、円形のボルト貫通孔は、前記ナット２５の外径よりも小さくすることが必要である。
あるいは、図７（Ｂ）に示すように、本体２１の中心を含み且つ平面視が楕円形の異形ボルト貫通孔２３を有するワッシャ２０ａを用いても良い。係るワッシャ２０ａを上記ベース板２ａの上にワッシャ２０を用いて固定すると、図７（Ｃ）に示すようになる。
【００３３】
また、前記土台本体１０において、一対の隔壁１１，１１を省略して、単一の中空部とした形態も使用可能である。
更に、前記土台本体１０において、ベース板２，２間に位置する底面１６および上面１２の屋外側における位置に通気孔をそれぞれ形成しても良い。係る上下一対または上下複数個ずつの通気孔およびこれらに挟まれた中空部１３を介して、外気を導入することにより、土台本体１０上で且つ柱Ｈ，Ｈ間に配置される断熱材などの湿気を除去して、その寿命を高めることも可能である。
尚、本発明は、その趣旨を逸脱しない範囲で種々に変更することができる。
【図面の簡単な説明】
【図１】（Ａ）は本発明の固定構造により基礎の上面に固定した土台本体などを示す斜視図、（Ｂ）は上記土台本体に固定される柱を斜め下側から示した斜視図。
【図２】本発明の建物用土台の固定構造を示す分解斜視図。
【図３】（Ａ）は上記建物用土台の固定構造を示す垂直断面図、（Ｂ）は（Ａ）中のＢ−Ｂ線に沿った矢視における断面図。
【図４】（Ａ）〜（Ｄ）は上記建物用土台の固定構造の施工工程を示す垂直断面図、（ｂ）〜（ｄ）は（Ｂ）〜（Ｄ）における平面図。
【図５】（Ａ），（Ｂ）は図４（Ｄ）に続く施工工程または得られた建物用土台の固定構造を示す垂直断面図。
【図６】（Ａ），（Ｂ）は上記建物用土台の固定構造により固定された土台本体の上に柱を立設した状態を示す概略図。
【図７】（Ａ）は異なる形態のベース板を示す斜視図、（Ｂ）は異なる形態のワッシャを示す斜視図、（Ｃ）は上記ベース板の凹部に上記ワッシャを載置した概略図。
【符号の説明】
１………………建物用土台の固定構造
２，２ａ………ベース板
４………………凹部
５………………透孔
１０……………土台本体
１２……………上面
１３，１５……中空部
１４……………側壁
１６……………底面
１８……………ワッシャ貫通孔
２０，２０ａ…ワッシャ
２２，２３……異形ボルト貫通孔
２４……………アンカーボルト
２５……………ナット
３０……………柱支持筒
３４……………ピン挿通孔
４０……………ボルト
Ｋ………………基礎
Ｋｕ……………上面
Ｈ………………柱
Ｗ………………幅[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fixing structure for a building base arranged along an upper surface of a foundation and capable of fixing to an anchor bolt and fixing a column with high accuracy. In this specification, the foundation includes a cloth foundation, a solid foundation, or an independent foundation.
[0002]
[Prior art]
In general, as a building base fixed along the upper surface of a concrete base, a base made of wood having a rectangular cross section is widely used in a conventional method and a prefabricated method. Such a wood base is fixed by anchor bolts erected above the foundation, and columns and studs are also erected through the base.
For this reason, the fixed position of the base is required to be accurate, a reference point is provided on the completed foundation, and the position where the base is to be set is determined by ink marking.
In addition, in the wooden base, when the installation position of the base is determined, the distance at which the anchor bolt is displaced from the predetermined position is measured so that the base is accommodated in the installation position, and based on the result. A hole was formed in the base in accordance with the position of the anchor bolt, and the base was fixed, and columns and the like were fixed thereto.
[0003]
As a result, the conventional timber building base has the following problems.
(1) Since the anchor bolts buried in the foundation and erected from the upper surface are likely to have different standing positions, it is necessary to adjust the through holes of the bolts on the base by drilling holes for each site by adjusting the site. There is.
(2) It is easily damaged by termites and corroded by moisture.
(3) By repeating moisture absorption and release, the cross-sectional dimensions of the base change over time, causing distortion in the building.
(4) Since the weight is large, the workability on site is low, and the cost is likely to be high.
(5) Since the processing accuracy is low and the dimensions are likely to be out of order, it is difficult to make a module unit, and the workability of the building is reduced.
(6) It is necessary to process a joint structure that requires a complicated and skilled work at a joint portion with a column or the like.
(7) Timber felling can easily lead to environmental destruction.
[0004]
[Problems to be solved by the invention]
The present invention solves the problems in the conventional technology described above, and ensures that the building base is accurately positioned at a predetermined position on the foundation even if the anchor bolt is displaced from the installation position of the base. It is an object of the present invention to provide a fixing structure for a building base which can be fixed to the base and can solve the problems associated with the conventional wooden base.
[0005]
Means for Solving the Problems and Effects of the Invention
The present invention, in order to solve the above problems, at least the base body is formed of an extruded profile of aluminum alloy, and even if the position of the anchor bolt is shifted with respect to a predetermined base fixing position, the indoor body of such a base body The present invention is based on the idea of using a washer having an adjusting function between a base body and a foundation so as to absorb a shift in an outdoor direction and a shift in a longitudinal direction.
[0006]
That is, the fixing structure for a building base according to the present invention (Claim 1) is characterized in that a plurality of base plates arranged at predetermined positions on the upper surface of a foundation and having through holes and the upper surface of the foundation at the upper surface of the base plate are provided. And a washer having an irregularly shaped bolt through-hole such as an oval or elliptical shape in plan view along the periphery from the center or a circular bolt through-hole with the center located near the periphery, and an aluminum alloy. A base body mounted on the base plate and having a washer through-hole at the bottom surface for receiving the washer, the anchor body being embedded in the foundation and standing vertically from the upper surface of the foundation. A male screw portion is passed through the through hole of the base plate, further penetrated through a bolt through hole of the washer, and fastened to a nut. Fixed to the surface, the base body is passed through the washer in the washer through hole of the base body, and the base body is positioned across a plurality of base plates, and the base body and the base plate are fixed with bolts or the like. It is characterized by the following.
[0007]
According to this, even if the anchor bolt is erected from the base fixing position on the upper surface of the foundation, the male screw portion of the bolt is made to have a large through hole in the base plate or a (deformed) bolt through hole in the washer. And the washer is further fixed on the base plate, so that the washer cannot be rotated. Also, when the male screw portion of the bolt is passed through the (deformed) bolt through hole of the washer, the washer appropriately rotates to absorb the displacement of the anchor bolt and install the base plate on the base. It can be fixed at a position that matches the position.
Moreover, when the base plate is fixed at a predetermined position by the washer, the base body can be accurately positioned at a predetermined position on the foundation by inserting the washer into the washer through hole in the bottom surface of the base body.
[0008]
Therefore, unlike the related art, there is no need to drill a bolt hole in the base for each site at the site, and thus the base can be easily made into a modular unit, and the workability of the building is improved. In addition, since at least the base body is made of an aluminum alloy, the corrosion, corrosion, and moisture absorption can be prevented.
The washer through hole includes a rectangular hole having a width in the indoor / outdoor direction substantially equal to or slightly larger than the outer diameter of the washer, as well as a circular hole having a diameter having the width. In addition, such a through hole may be formed as a groove that opens on the bottom surface in addition to a hole that opens on the bottom surface of the base body. The above pillars include not only vertical frames and pipe pillars, but also studs.
[0009]
Further, a fixing structure for a building base, in which a column supporting cylinder having a horizontal pin insertion hole is fixed on the upper surface of the base body, is also included.
According to this, since the pillar support cylinder inserted into the lower end of the pillar can be fixed on the base body, the pillar can be erected at a predetermined position quickly and accurately.
Further, the present invention also includes a fixing structure for a building base, wherein the base body is formed of an extruded shape member of an aluminum alloy.
According to this, the weight can be reduced without increasing the weight as in the conventional wooden base, and the washer through hole for receiving the upper portion of the washer and the through hole for the bolt for fixing the column support tube can be formed easily and accurately. It is possible to do.
The extruded shapes include not only a state in which an aluminum alloy is extruded (fabric material), but also a form in which an anodized film or both a film and a coating are applied to the surface.
[0010]
Further, in the present invention, the base body includes the bottom surface, the top surface, a pair of side walls on the indoor side and the outdoor side, and a hollow portion surrounded by these, and three or more along the indoor and outdoor directions. The present invention also includes a structure for fixing a foundation for a building, comprising a hollow portion, wherein the washer through hole is formed in the bottom surface of the intermediate hollow portion.
According to this, the strength capable of sufficiently supporting the load of the building applied to the base body is obtained, and the washer through hole for receiving the upper portion of the washer can be easily formed on the bottom surface of the intermediate hollow portion in the indoor / outdoor direction. In addition, the hollow portions closer to the inside and outside can be used for the approach path and storage of the bolt connecting the base body and the base plate. As will be described later, the width of the intermediate hollow portion is made wider, and the width of the hollow portion closer to the indoors / outdoors is made narrower, so that the formation of the washer through hole is further facilitated. In addition, it is also possible to use any one of the hollow portions to fit and connect a connecting member that connects adjacent base bodies continuously in the longitudinal direction.
[0011]
The present invention also includes a structure for fixing a foundation for a building, wherein the column support tube is erected right above the base plate (claim 5).
According to this, the weight of the column erected on the upper surface of the base body and the load of the building applied vertically through the column are firmly supported by the base plate located directly below the column via the base body. It is possible to do.
[0012]
Furthermore, in the present invention, the column support tube is fixed to the upper surface of the base body, and a pin insertion hole formed in the column support tube is substantially along the longitudinal direction of the foundation. The fixing structure (claim 6) is also included.
According to this, the pillar to be erected on the upper surface of the base body is inserted into a support hole vertically provided from near the center of the bottom surface, and the column support cylinder fixed to the upper surface of the base body is inserted into the support hole. Is penetrated through the horizontal hole of the column and the pin insertion hole, whereby the column cannot be pulled out and can be firmly fixed on the base body. Moreover, since the pin insertion hole extends substantially in the longitudinal direction of the foundation, it is possible to prevent the end face of the driven drift pin from being exposed to the outside or corroded.
The column support tube may be made of an aluminum alloy pipe or a steel pipe, or may be a pipe having a circular cross section or a square cross section. Further, a solid material other than a pipe may be used. However, from the viewpoint of corrosion resistance, it is preferable to use an aluminum alloy pipe or a solid material, and if a circular pipe is used, threading can be easily performed.
[0013]
In addition, according to the present invention, the base plate is formed by cutting an extruded member made of an aluminum alloy having a cross-sectional shape having the upward concave portion at a predetermined length along the extrusion direction, and A fixing structure for a foundation for a building, wherein a through hole is perforated, and an outer diameter of the washer is approximately the same as or slightly smaller than the width of the upward concave portion, and is rotatable in the concave portion. included.
According to this, since the base plate is formed of the extruded shape of the aluminum alloy, the base plate which directly contacts the upper surface of the foundation and is easily exposed to moisture under the floor of the building is less likely to corrode. In addition, the base plate has a cross-sectional shape having an upward concave portion, and the outer diameter of the washer is substantially the same as or slightly smaller than the width of the concave portion, and the washer is rotatable in the concave portion, so that the washer can be rotated with high accuracy. The base can be installed, and the base can be easily fixed to the base by bolts or the like.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
FIG. 1A shows a building base 1 fixed along the upper surface Ku of the foundation K by the fixing structure of the present invention. As shown in FIG. 1 (A), the building base 1 includes a plurality of base plates 2 arranged on the upper surface Ku of the foundation K, and extends in a longitudinal direction of the foundation K over the plurality of base plates 2. And a base body 10 fixed along.
The cylindrical column support tube 30 for fixing the column H is fixed on the upper surface 12 of the base body 10 and directly above the base plate 2. A pair of upper and lower pin insertion holes 34 penetrating horizontally along the longitudinal direction of the foundation K is formed in the main body 32 of the column support cylinder 30. Note that the column support tube 30 may be a solid columnar shape.
[0015]
As shown in FIG. 1 (B), the wooden pillar H has a support hole 52 provided vertically at the center of the bottom surface 50 thereof, and as shown in FIGS. 1 (A) and 1 (B). Are provided horizontally at the center.
As shown by the thick arrow in FIG. 1A, the column H is brought closer to the upper surface 12 of the base body 10, the column support tube 30 is inserted into the support hole 52 of the column H, and then horizontally communicated with each other. A drift pin 56 made of an aluminum alloy or a steel material and having a tapered tip is driven into the pin insertion hole 34 of the column support cylinder 30 and the horizontal hole 54 of the column H. As a result, on the upper surface 12 of the base body 12, the pillar H can be vertically supported without being unable to come out, and fixed vertically.
[0016]
As shown in FIG. 2, the base plate 2 has a flat rectangular plate-shaped main body 3, an upward and rectangular shallow concave portion 4 formed in the middle of the foundation K in the indoor and outdoor directions, and a concave portion. 4 have thick portions 6 and 6 located on both sides of a shallow step 7 along the left-right direction in the figure. This base plate 2 is made of an aluminum alloy (for example, JIS: A6063S-T5 or A6061S-T6), and cuts an extruded profile having a cross section having the above-described portions at a predetermined length along the extrusion direction. As shown in FIG. 5, a large-diameter through hole 5 is provided at the center of the concave portion 4 and female screw holes 8 are provided at four corners of the thick portions 6 and 6, respectively. The width of the recess 4 is substantially the same as or slightly larger than the outer diameter of the washer 20 described later, and the washer 20 is rotatable inside the recess 4.
The base body 10 is made of the same extruded aluminum alloy as described above. As shown in FIG. 2, a bottom surface 16 having a washer through hole 18 having a rectangular shape in plan view, and an upper surface 12 for fixing the column support tube 30 are provided. And a pair of indoor and outdoor side walls 14 for connecting them, and hollow portions 13 and 15 surrounded by and surrounded by a pair of partition walls 11 and having a substantially rectangular cross section.
[0017]
As shown in FIG. 2, the width W in the indoor / outdoor direction of the washer through hole 18 formed in the bottom surface 16 of the base body 10 and opening to the wide hollow portion 15 located at the center is equal to that of the washer 20 described below. It is larger than the outer diameter.
As shown in FIG. 2, through holes 19 are formed at the four corners of the upper surface 12 of the base body 10 near the outdoor / indoor side and communicate with the narrow hollow portions 13 and 13, respectively. A small-diameter through hole (not shown) is formed in 16. As shown by arrows in FIG. 2, these through holes 19 and the like allow an elongated bolt 40 to pass therethrough, and the male screw portion 44 of the bolt 40 is screw-coupled to each of the female screw holes 8 of the base plate 2. It is used for fixing the base body 10 to the base plate 2.
As shown in FIGS. 2 and 3A, ribs 17 projecting outward from the side walls 14 are symmetrically located on the indoor side and the outdoor side of the bottom surface 16 of the base body 10. The ribs 17 are used when positioning a support bracket for a joist receiver (not shown) on the indoor side of the base body 10 or fixing a drainer (not shown) on the outdoor side.
[0018]
As shown in FIGS. 2 and 3A and 3B, the washer 20 includes a main body 21 having a circular shape in plan view, an oval shaped bolt through hole 22 extending from the center to the periphery, and Consists of The bolt hole 22 includes the center of the washer 20 at a position near the center. As shown in FIGS. 3A and 3B, the outer diameter of the washer 20 is formed to be slightly smaller than the width of the concave portion 4 of the base plate 2 and the width of the washer through hole 18 of the base body 10. Therefore, the lower portion of the washer 20 is rotatably inserted into the concave portion 4 of the base plate 2, and the upper portion of the washer 20 is easily received in the washer through hole 18 of the base body 10.
[0019]
The washer 20 is formed by, for example, cutting a bar of the same aluminum alloy as described above into a predetermined width and then punching out an oval shaped bolt through-hole 22 by pressing or the like, or has such a bolt through-hole 22 inside. It is formed by a method in which an extruded aluminum alloy is sliced. However, it may be formed by injection molding of a synthetic resin. Further, the deformed bolt through hole 22 may be an elliptical shape or a curved arc shape in plan view. Furthermore, in FIG. 3B, hatching of the washer 20 is omitted except for a part in order to facilitate understanding of the present invention.
[0020]
As shown in FIGS. 2 and 3A, the column support tube 30 is formed at a lower portion of a cylindrical main body 32, a pair of upper and lower pin insertion holes 34 along a longitudinal direction of the foundation K, and a hollow portion 36. And a female screw portion 38. The column support cylinder 30 is formed by, for example, drilling and threading an aluminum alloy pipe.
As shown in FIGS. 2 and 3A, the column support cylinder 30 has a through hole 12a provided in the center of the upper surface 12 of the base body 10 in the outdoor / indoor direction and a through hole 27 of the square washer 26, and is hollow. It is vertically fixed to the upper surface 12 of the base body 10 by a bolt 28 that penetrates from the part 15 side and is screwed to the female screw part 38. That is, the bolt 28 and the washer 26 are inserted into the hollow portion 15 from the washer through hole 18, and the column head 30 is previously fixed on the base body 10 by rotating the bolt head 29.
[0021]
As shown in FIGS. 2 and 3A, the bolt 40 has a male screw portion 44 and a flange 46 on the lower side of the main body 42, and a bolt head 48 located at the upper end of the main body 42 has a plan view. An insertion hole 47 for a regular hexagonal wrench is formed. The bolt 40 is inserted from the through hole 19 into the hollow portion 13 of the base body 10, and the male screw portion 44 is inserted into the female screw hole 8 of the base plate 2 through a small-diameter through hole 19 a provided on the low surface 16. Then, it is rotated and screwed by a wrench (not shown).
As a result, as shown on the right side of FIG. 3A, the base body 10 can be fixed on the base plate 2 by the flange 46 located in the middle of the bolt 40 abutting against the bottom surface 16 of the base body 10. .
[0022]
The base body 10 is fixed above the foundation K as follows.
As shown in FIGS. 2 and 3A, the base plate 2 is disposed on the upper surface Ku of the foundation K, the lower portion of the washer 20 is disposed in the concave portion 4, and these through holes 5 and deformed bolt through holes 22 are provided. The nut 25 is fastened to the male screw portion of the anchor bolt 24 that has penetrated through.
At the time of such fastening, if the upright position of the anchor bolt 24 is displaced in the inward / outward direction or the left / right direction from the center of the expected position where the base plate 2 is to be fixed on the upper surface Ku of the foundation K, an operation described later is performed. .
Next, the bottom surface 16 of the base body 10 in which the column supporting cylinder 30 is fixed to the upper side 12 in advance is placed on the thick portions 6, 6 of the base plate 2.
[0023]
At this time, the upper part of the washer 20 is received in the washer through hole 18 of the base body 10. In this state, the bolt 40 is inserted into the hollow portion 13 from each through hole 19, and passes through the through hole 19 a in the bottom surface 16 immediately below the through hole 19, and is inserted into the female screw hole 8 of the base plate 2. The male screw portion 44 is screwed.
As a result, as shown in FIG. 3A, the base body 10 having the column support cylinder 30 is fixed by the bolt 40 on the base 2 accurately fixed to a predetermined position on the foundation K by the washer 20. Thus, the fixed structure 1 of the building base of the present invention is obtained.
[0024]
By the way, as shown in FIGS. 3A and 3B, an anchor bolt 24 having an anchor buried in the base K is provided on the upper surface Ku of the base K by a predetermined fixing position of the base plate 2. There is a case where it is erected at a position shifted toward the outside, indoors, or longitudinally (left and right) with respect to the fixed position. The male screw portion of the anchor bolt 24 is passed through the through hole 5 of the base plate 2 having a larger diameter than the bolt 24, and the base plate 2 is set so as to coincide with a predetermined fixed position on the foundation K.
Next, the male screw portion of the anchor bolt 24 vertically protruding from the base plate 2 is passed through the deformed bolt through hole 22 of the washer 20, and as shown by a curved arrow in FIG. Is rotated appropriately, and its lower part is arranged in the concave part 4 of the base plate 2.
[0025]
As a result, if the error of the installation position of the anchor bolt 24 is within the range of the through hole 5 of the base plate 2, the base plate 2 can be fixed at a predetermined position. Thereby, the base plate 2 fixed by the washer 20 is fixed at an accurate position with respect to the mounting position of the base 1. As shown in FIG. 3A, after inserting the upper part of the washer 20 into the washer through hole 18 and mounting the base body 10 on the base plate 2, the four bolts 40 are connected as described above. And individually screwed into the female screw holes 8 of the base plate 2.
As a result, even if the anchor bolt 24 is installed at a position deviated from the center of the base plate 2, the base plate 2 can be fixed at a predetermined position according to the fixing structure of the present invention. K can be accurately fixed to the installation position on the upper surface Ku.
[0026]
The fixing structure for a building base according to the present invention is specifically formed in the following order.
As shown in FIG. 4 (A), the anchor bolt 24 is erected on the upper surface Ku of the base K at a position shifted toward the left front as shown in FIG.
Next, as shown in FIGS. 4 (B) and 4 (b), the base plate 2 is arranged so as to be located at a position where the upper surface Ku of the foundation K is to be installed, and the anchor bolt 24 is inserted through the through hole 5. Let it. At this time, as shown in FIG. 4B, the anchor bolt 24 penetrates the large-diameter through hole 5 at a position shifted to the lower left in the drawing.
Next, as shown in FIGS. 4C and 4C, the anchor bolt 24 is made to pass through the deformed bolt through hole 22 of the washer 20, and the washer 20 is rotated while the lower part of the base plate 2 is It is arranged in the recess 4.
As a result, the center of the washer 20 does not always coincide with the center of the through hole 5 of the base plate 2, but is substantially located on the through hole 5.
[0027]
Further, as shown in FIGS. 4D and 4D, a nut 25 is fastened to the male screw portion of the anchor bolt 24 that has penetrated the base plate 2 and the washer 20. As a result, the base plate 2 is fixed at the installation position, the center position of the washer 20 is substantially at the center of the through hole 5 of the base plate 2, and the position of the nut 25 is a position shifted from the center of the washer 20. , The base plate 2 is fixed at the installation position.
The above operation is performed on the plurality of anchor bolts 24 erected along the longitudinal direction of the foundation K, and the base plate 2 and the washer 20 are fixed to each.
As shown in FIG. 5A, the base body 10 has the column support tube 30 fixed in advance. That is, the bolt 28 and the washer 26 are inserted into the hollow portion 15 through the washer through hole 18 provided on the bottom surface 16, and the position at the center on the upper surface 12 in the indoor / outdoor direction and immediately above the base plate 2. After the column support cylinder 30 is erected, the bolt 28 passing through the washer 26 and the through holes 27 and 12 a of the upper surface 12 is screwed to the female screw portion 38 of the hollow portion 36 of the column support cylinder 30. The column support cylinder 30 is fixed.
[0028]
Next, after raising the base body 10 on which the desired number of column support cylinders 30 are fixed in advance above the plurality of base plates 2 and the washers 20 fixed along the upper surface Ku of the foundation K, FIG. Lower as indicated by the thick arrow inside.
As a result, as shown in FIG. 5B, the base body 10 has the bottom surface 16 placed on the thick portions 6, 6 of the base plate 2. At this time, the mounting holes are placed so that the through holes 19, 19 a located above and below the hollow portions 13, 13 on the indoor side and the outdoor side of the base body 10 are aligned coaxially with the female screw holes 8 of the base plate 2. I do.
[0029]
In this state, as shown on the right side of FIG. 5B, a bolt 40 is inserted into the hollow portion 13 of the base body 10 from the through hole 19, and the male screw portion 44 is inserted into the female screw of the base plate 2 through the through hole 19a. Screw into hole 8. At this time, the bolt 40 is rotated by inserting a wrench (not shown) into the insertion hole 47 of the bolt head 48. The flange 46 of the bolt 40 stops when the flange 46 contacts the bottom surface 16 of the base body 10.
As a result, as shown in FIG. 5B, the base plate 2 is fixed at a predetermined position even if the anchor bolt 24 is erected at a position shifted from the fixing position of the base plate 2. Thereby, the fixing structure 1 of the building base of the present invention, which is accurately fixed at a predetermined position via the plurality of base plates 2 along the upper surface Ku of the foundation K related to the base body 10 can be formed.
[0030]
As shown in FIGS. 6A and 6B, a column H having a vertical support hole 52 at the center of the bottom surface 50 and a pair of horizontal holes 54 penetrating the support hole 52 horizontally by a crane (not shown) or the like. The column H is lifted above the base body 10 directly above the base plate 2 and the column H is lowered while the support hole 52 and the column support tube 30 are aligned.
As a result, as shown in FIG. 6B, the bottom surface 50 of the column H comes into contact with the upper surface 12 of the base body 10, and the pin insertion holes 34, 34 of the column support cylinder 30 and the column H The horizontal holes 54, 54 communicate with each other concentrically.
[0031]
In this state, as shown by the thick arrow in FIG. 6B, the drift pins 56 are inserted in the order of the horizontal hole 54 of the column H, the pin insertion hole 34 of the column support cylinder 30, and the horizontal hole 54 on the opposite side. Is driven by a jig (not shown).
As a result, as shown in FIGS. 6 (A) and 6 (B), the pillar H cannot be pulled out onto the base body 10 directly above the base plate 2 and can be firmly erected. Therefore, it is possible to improve the workability and accuracy of the building thereafter.
The drift pins 56 may be used alone or in combination of three or more. According to these, the number of the pin insertion holes 34 of the column support cylinder 30 and the number of the horizontal holes 54 of the column H are the same. Adjusted.
[0032]
The present invention is not limited to the embodiments described above.
For example, the base plate 2 may be formed of a hard synthetic rubber or a synthetic resin. Further, as shown in FIG. 7A, a base plate 2a having only the through hole 5 without forming the concave portion 4 near the center of the plate-shaped main body 3 may be used.
Further, the washer may be formed with a circular bolt through hole including the center thereof and having its center shifted from the center toward the periphery. In this case, the circular bolt through-hole needs to be smaller than the outer diameter of the nut 25.
Alternatively, as shown in FIG. 7B, a washer 20a including the center of the main body 21 and having a deformed bolt through-hole 23 having an elliptical plan view may be used. When the washer 20a is fixed on the base plate 2a using the washer 20, the state shown in FIG. 7C is obtained.
[0033]
Further, in the base body 10, a configuration in which the pair of partition walls 11 and 11 are omitted to form a single hollow portion can be used.
Further, in the base body 10, ventilation holes may be formed at positions on the outdoor side of the bottom surface 16 and the top surface 12 located between the base plates 2 and 2, respectively. By introducing outside air through such a pair of upper and lower or a plurality of upper and lower ventilation holes and a hollow portion 13 interposed therebetween, a heat insulating material or the like disposed on the base body 10 and between the columns H, H is provided. It is also possible to remove moisture and increase its life.
Note that the present invention can be variously modified without departing from the gist thereof.
[Brief description of the drawings]
FIG. 1A is a perspective view showing a base body and the like fixed to the upper surface of a foundation by the fixing structure of the present invention, and FIG. 1B is a perspective view showing a column fixed to the base body from obliquely below.
FIG. 2 is an exploded perspective view showing a fixing structure for a building base according to the present invention.
3A is a vertical sectional view showing a fixing structure of the building base, and FIG. 3B is a sectional view taken along line BB in FIG. 3A.
4 (A) to 4 (D) are vertical sectional views showing a construction process of the above-mentioned building base fixing structure, and FIGS. 4 (b) to 4 (d) are plan views in FIGS.
5 (A) and 5 (B) are vertical sectional views showing a construction process following FIG. 4 (D) or an obtained fixing structure for a building base.
FIGS. 6A and 6B are schematic diagrams showing a state in which a pillar is erected on a base body fixed by the building base fixing structure.
7A is a perspective view showing a base plate of a different form, FIG. 7B is a perspective view showing a washer of a different form, and FIG.
[Explanation of symbols]
1 …………… Fixed structure for building base
2, 2a ... Base plate
4 …………… Recess
5: Through-hole
10. Base body
12 ......... top
13, 15 ... hollow part
14 ... side wall
16 …………… Bottom
18 ... Washer through hole
20, 20a ... washers
22, 23 ... Deformed bolt through hole
24 ......... Anchor bolt
25 ………… Nut
30 ………… Pole support tube
34 Pin insertion hole
40 ...... bolt
K …………… Basic
Ku ............ top
H …………… Pillar
W ……………… Width

Claims

A plurality of base plates arranged at predetermined positions on the upper surface of the foundation and having through holes;
On the upper surface of the base plate, the base plate is fixed between the upper surface of the base and the base plate, and a deformed bolt through hole such as an oval or an ellipse or a center is located near the periphery in plan view along the periphery from the center. A washer having a circular bolt through hole;
A base body made of an aluminum alloy and placed on the base plate and having a washer through hole on the bottom surface for receiving the washer,
The male screw portion of the anchor bolt buried in the foundation and vertically erected from the upper surface of the foundation is passed through the through hole of the base plate, further penetrated through the bolt through hole of the washer, and fastened to the nut. Fixing the base plate to the upper surface of the foundation by the washer,
The base body is positioned across a plurality of base plates by penetrating the washer into a washer through hole of the base body, and the base body and the base plate are fixed with bolts or the like. Fixed structure for building base.

The fixing structure for a building base according to claim 1, wherein a column support cylinder having a horizontal pin insertion hole is fixed to an upper surface of the base body.

The fixing structure for a building base according to claim 1, wherein the base body is formed from an extruded member made of an aluminum alloy.

The base body includes the bottom surface, the top surface, a pair of side walls on the indoor side and the outdoor side, and a hollow part surrounded by these, and includes three or more hollow parts along the indoor and outdoor directions, The fixing structure for a building base according to claim 3, wherein the washer through-hole is formed in the bottom surface of the hollow portion.

The structure for fixing a foundation for a building according to any one of claims 1 to 4, wherein the column supporting cylinder is provided upright above the base plate.

The said column support cylinder is being fixed to the upper surface of the said base main body, The pin insertion hole formed in the said column support cylinder is substantially along the longitudinal direction of the said base, The Claims 2 thru | or 5 characterized by the above-mentioned. A fixing structure for a foundation for a building according to any one of the preceding claims.

The base plate is formed by cutting an extruded member made of an aluminum alloy having a cross-sectional shape having the upward concave portion at a predetermined length along the extrusion direction, and perforating the through-hole in the concave portion. The building according to any one of claims 1 to 6, wherein an outer diameter of the washer is substantially the same as or slightly smaller than a width of the upward concave portion, and is a dimension rotatable within the concave portion. Fixed structure of base.