JP3559261B2

JP3559261B2 - Foundation fastening structure of horizontal reinforced columns for wooden buildings

Info

Publication number: JP3559261B2
Application number: JP2001280682A
Authority: JP
Inventors: 清一丸元
Original assignee: 株式会社サニックス
Priority date: 2001-09-14
Filing date: 2001-09-14
Publication date: 2004-08-25
Anticipated expiration: 2021-09-14
Also published as: JP2003090135A

Description

【０００１】
【発明の属する技術分野】
本発明は、既築の木造建築物の変形剛性を増強して、構造水平耐力を向上させる補強構造に関わるものであり、特に、既存の軸組木造建築物において、建物の補強箇所の外壁を大きく壊すことなく、建物の外部と内部より補強材を容易に取付可能とした木造建築物の水平耐力補強支柱の基礎締結技術に関するものである。
なお、本発明の説明で、屋内と屋外の区別は、家の外壁を境界として、その内側を屋内、その外側を屋外とする。
【０００２】
【従来の技術】
「軸組木造建築物の地震被害が接合部の強度に大きく左右される」という見解が、多くの木造建築研究者の一致した意見であり、接合部の最も信頼性の高い強度向上の手段として、通称「Ｚマーク表示金物」と呼ばれる（財）日本住宅・木材技術センターが、１９７８年に定めた「軸組工法用金物規格」で規定された金物や、それに類似の火打ち金物や、筋交いプレート、山形プレート、かどプレート等の種々の金物が提供され、また、土台と柱に取り付けるホールダウン金物が提供されていることは良く知られている。
【０００３】
また、特開平８−３０２８３４号公報や特開平８−３３８０７０号公報や特開平１０−１３１２９５号公報のように改良された補強金具が提案されている。
しかし、木造の在来の軸組工法による既存の多くの家屋において、前述の補強金具の取付が不十分であったり、垂直構面の剛性を増すための筋交いが、形状寸法の厚い部材は望めず、壁量率の不足している建築物が多いばかりでなく、配置も不適切になりがちであり、これらの課題を解決するために、本発明者がした特願２００１−０２８７６３号（以下、先行技術１）が既に提案されている。
【０００４】
【発明が解決しようとする課題】
以上説明したように、従来の問題を解決する既存の木造建築物の補強構造として、先行技術１が提案されているが、屋外補強支柱の基礎部に生じるモーメントの積極的な減少策が考慮されていない問題がある。
もちろん、十分な基礎工事を行い、門型ラーメンの支柱支持を固定支持とすることが、最も水平耐力を大きくし、補強としては理想的であるが、金額的にもスペース的にも困難であることが多い。
門型ラーメン構造においては、基礎部にモーメントを生じない支持法（柱の基礎部の回転を拘束しない支持−以後「単純支持」と称す）としても水平耐力を生じさせ得る。つまり、門型ラーメン構造で屋外補強支柱を単純支持する構造を積極的に取り入れれば、水平耐力を持ちながら、基礎にモーメントを負担させない構造とできるが、先行技術１では屋外補強支柱の基礎締結部を回転支持構造としていないので、基礎部へのモーメント負担が生じるという問題が残る。
【０００５】
本発明は、上記の点に鑑みてなされたもので、既築の軸組木造建築物において、屋外補強支柱を用いて補強し、当該屋外補強支柱に上架されている梁に補強の金物を取り付けて、柱−梁からなる門型構造にて家屋における水平耐力を向上させる場合において、屋外補強支柱の基礎部への締結を単純支持として、基礎へのモーメント発生を低減することを可能にし、建物を地震力から守ることができるようにした木造建築物の水平耐力補強支柱の基礎締結構造を提供することを課題としている。
【０００６】
【課題を解決するための手段】
上記の課題を解決するために、本発明の木造建築物の水平耐力補強支柱の基礎締結構造（請求項１）は、
骨組構造の木造建築において、屋外に水平耐力補強支柱としての屋外補強支柱を設け、該屋外補強支柱と屋内梁を締結して、骨組みとしてこれらの柱と梁で半門型構造又は門型構造を形成した補強構造とし、前記屋外補強支柱の基礎部への締結を回転自在な接合とした構成とした。
【０００７】
又、本発明の木造建築物の水平耐力補強支柱の基礎締結構造（請求項２）は、
骨組構造の木造建築において、妻壁両端部の屋外に外壁に沿って水平耐力補強支柱としての屋外補強支柱を設けると共に、この屋外補強支柱に上架するように屋外梁を設け、前記屋外補強支柱と屋外梁とを接合して、骨組みとして屋外補強支柱と屋外梁とで門型構造を形成した補強構造とし、前記屋外補強支柱の基礎部への締結を回転自在な接合とした構成とした。
【０００８】
又、前記請求項１又は２記載の木造建築物の水平耐力補強支柱の基礎締結構造において、１本の屋外補強支柱に対して、複数の基礎締結具を用いて、屋外補強支柱と基礎とを締結するようにした態様（請求項３）がある。
【０００９】
【発明の実施の形態】
以下説明を容易にするために、図を用いて実施例を示す。
図１は水平耐力補強支柱としての屋外補強支柱の基礎締結構造の代表例を示す断面図、図２〜図５は骨組みとしての屋外補強支柱と梁で門型構造を形成した補強構造の例を示す図、図６は構造力学モデル例を示す図である。
【００１０】
図２は、二階建ての家屋において、左半分に補強構造を適用し、右半分は補強構造を適用しない状態の骨組み例を示す模式正面図である。
図２において地震等による水平力は図の左右方向に生じるが、例えば１階１Ｆの水平耐力を検討すると、力学モデルとしては図６のようになり、２階以上の慣性力が図６の重心相当位置Ｇにかかると考えて良く、図６に示す点線の如き変形を生じる。
この時の水平変位が小さいほど水平耐力が高いといえる。この水平耐力を高める良い方法は、図６の点ａと点ｄ及び点ｂと点ｃを結ぶ部材（筋交い）を入れ、その接合部を金具（補強材）等でしっかり締結したり、この面に構造合板などを貼って耐力壁を作ることである。既築の家でこういう改造を行うのは内部の通路（開口部）やコストの面で困難なことが多い。
【００１１】
次の方法としては、図６の点ａと点ｂのモーメント剛性を高める（金属製の締結具を取り付ける）方法があるが、図６の点ａと点ｂは、図２の２階床Ｆ２と１階天井Ｔ１間の隙間であって、俗に中天４と称する部分で、人が入る程の隙間がないことが多く、金具の取付け施工ができないことが少なくない。
【００１２】
そこで補強構造として、屋外に補強のための屋外補強支柱１（図２の右半分については図示省略している）を屋内に既設された屋内柱２の位置に相対して外壁２２に沿って建て、この屋外補強支柱１を、既存の屋内柱２に締結具３（コーチスクリューやネジなど）で締結し、かつ土台２０、胴縁２１ａ、軒桁２１ｂに対しても締結具３で締結し、同時に基礎８に対しても締結具３ａで締結して、屋内柱２の曲げ剛性を高めると共に、人が入ることが中天４よりはるかに容易な、上天５（図６の点ｅや点ｆ）に、屋内柱２に上架されている屋内梁としての上天梁７と屋内柱２との接合部（仕口部）を補強材６で補強することで、中天４に生じる水平力を、屋外補強支柱１で補強された屋内柱２と上天梁７とで構成する門型で受けるようにしたものである。
この場合、左右の屋外補強支柱１，１と上天梁７とで門型構成となる補強が最も好ましいが、屋外補強支柱１が片方にしか立たないような場所では、一方の屋外補強支柱１と上天梁７とで半門型構成にしても有効であることはいうまでもない。
【００１３】
尚、図６のＧ点に１００ｋｇの水平力を負荷させた計算結果として、中天梁４０に補強金具（図示せず）を取り付けた場合の水平変位が４．４ｃｍであったのに対し、この補強構造では、基礎締結部（図のｃ点及びｄ点）を単純支持としても水平変位が２．０ｃｍと、約２倍を上回る水平剛性を得ることができた。
【００１４】
上天梁７を補強する補強材６としては、長い金属トラス材を用いるのが好ましい。上天梁７に曲げ耐力が集中するので、梁の剛性と耐力の増強を目的とした補強が重要である。このためにはトラス部材として、図２に示すように、上天梁７の垂直構面の三角形を形作る補強材６を取り付けるのが最も合理的な補強法であり効率がよい。
また、屋外補強支柱１と屋内柱２との締結は外壁２２を締結具３が貫通するので、雨に対するシーリングを行う必要がある。
【００１５】
次に、図３は、二階建ての家屋における補強構造の例を示す模式斜視図である。
この補強構造は、木造建築の骨組構造において、屋内に既設された屋内柱２に相対しない位置、即ち、屋内柱２からズレた位置に外壁に沿って屋外補強支柱１，１を対となるように設け、この屋外補強支柱１，１と既存屋内梁（既存上天梁７ａ）との接合部（仕口部）を補強材６ａで補強し、骨組みとして屋外補強支柱１，１と既存上天梁７ａで門型構造を形成したものになっている。この場合も屋外補強支柱１は、土台２０、胴縁２１ａ、軒桁２１ｂに締結具３で締結され、同時に基礎８に対して基礎締結具３ａで締結されている。
又、この図３の例で示すように、もともと屋内柱２に上架されている上天梁７と屋内柱２との接合部についても補強材６で補強するのが好ましい。
【００１６】
次に、図４は、二階建ての家屋における補強構造の例を示す模式斜視図である。
この補強構造は、木造建築の骨組構造において、屋内に既設された屋内柱２に相対しない位置、即ち、屋内柱２からズレた位置に外壁に沿って屋外補強支柱１，１を対となるように設け、この屋外補強支柱１，１に上架するように新たに新規屋内梁（新規上天梁７ｂ）を設け、この屋外補強支柱１，１と新規上天梁７ｂとの接合部（仕口部）を補強材６ｂで補強し、骨組みとして屋外補強支柱１，１と新規上天梁７ｂで門型構造を形成したものになっている。尚、屋外補強支柱１は、土台２０、胴縁２１ａ、軒桁２１ｂに締結具３で締結され、同時に基礎８に対して基礎締結具３ａで締結されている。
【００１７】
次に、図５は、二階建ての家屋における補強構造の例を示す模式斜視図である。
この補強構造は、木造建築の骨組構造において、妻壁８０の両端部の屋外に外壁に沿って屋外補強支柱１，１を設けると共に、この屋外補強支柱１，１に上架するように屋外梁７ｃを設け、この屋外梁７ｃと前記屋外補強支柱１，１とを接合すると共に、その接合部（仕口部）を補強材６ｃで補強し、骨組みとして屋外補強支柱１，１と屋外梁７ｃとで門型構造を形成したものになっている。
この場合、屋外補強支柱１，１間の下側部分（高さ方向途中）にも中間屋外梁７ｄを設けて、水平耐力を更に強固にしている。又、図示省略したが、屋外補強支柱１は、土台、胴縁等に締結具で締結され、同時に基礎に対して締結具で締結されている。
【００１８】
尚、前記図１〜図５で示した各補強構造を組み合わせた補強構造にすることができるのは勿論である。
【００１９】
又、図５により屋外補強支柱１が並ぶ方向面の水平耐力の補強構造を説明する。
図５では、屋外補強支柱１が並ぶ方向面の水平耐力の補強もなされており、この場合、隣り合う屋外補強支柱１，１同士を補強材でたすき状に繋ぐことで、屋外補強支柱１が並ぶ方向面（矢印Ａ方向及び矢印Ｂ方向）の水平剛性を持たせるようにしている。
この場合、屋外補強支柱１，１が複数本並んだ方向の補強となり、補強材としての筋交い金具９ａ及び水平金具９ｂで三角形を形作るように締結することが重要で、好ましくはたすき掛けに繋ぐと最も好ましい。尚、水平金具９ｂについては、必ずしも必要でないが、三角形を形作る上で水平金具９ｂを設けるのが好ましい。
この金具９ａ，９ｂを用いた補強により、垂直構面の剛性、つまり、耐力壁としての剛性が増すので、地震などの水平力に対する強度を増すことが可能である。
又、この屋外補強支柱１が並ぶ方向面の補強構造を図２〜図５の補強構造に適用できるのは勿論である。
【００２０】
そして、前記屋外補強支柱１の基礎８に対する締結構造は、単純支持によってなされており、その代表例を図１に示す。
この締結構造は、基礎部まで伸ばした屋外補強支柱１に孔１５をあけ、この部分に基礎締結具３ａの引っかけ部３５を引っかけ、反対側を基礎ボルト３６で基礎８に締結する。この構成により、引っかけ部３５は、屋外補強支柱１の引き抜き力は伝達するが、モーメントは伝達しない接合となり、いわゆる補強支柱の単純支持が行える。
なお、屋外補強支柱１の孔１５に基礎締結具３ａの引っかけ部３５を通した後に、外れ防止のため、孔１５の上部隙間に止め栓を取り付けることも、確実な基礎締結を行う上で有効である。
【００２１】
図７は、基礎締結構造の他例を示す正面図で、この図示例では基礎締結具３ａを２個使用している。この基礎締結具３ａの個数については、これが制限されるものではないし、また、屋外補強支柱１側に設けた孔１５も複数として、個々の孔１５に基礎締結具３ａを取り付けてもよい。
【００２２】
図８は、基礎締結構造の他例を示す正面図で、この図示例では、門型ラーメンの構面は紙面に垂直の方向であり、基礎へのモーメント解放に必要な回転自由度方向は図のＸ軸回転方向である。このため、Ｘ軸方向にピン１６（ボルト）を通し、これにひねり金物状の基礎締結具３ａを取り付けることで、屋外補強支柱１の単純支持を行わせている。
【００２３】
以上の例では、説明の便宜上、基礎締結具３ａは平板状のものの加工品例を示しているが、図９で示すように、丸棒金属の加工品としてもよい。また、基礎締結具３ａの長さ調節、および／または基礎締結具３ａの取り付け位置調節のために、図１０に示すように、ターンバックル３６や図示しないスライド機構など、一般によく知られた長さ調節機構を用いることができるもので、本発明の根幹との関わりは少ないので、詳細な説明は省く。
【００２４】
基礎締結具３ａは、屋外での重要構造物部品として、素材としては防錆や耐候性に充分配慮してメッキ材やステンレス鋼を用いることが好ましい。
なお、屋外補強支柱の形状は本図示例に限定されるものではない。
以上のように、本発明で垂直構面の剛性、つまり、耐力壁としての剛性が増し、かつ、水平力が家屋に生じても、基礎へのモーメント負荷が激減するので、基礎に無理がかからず、地震などの水平力に対する強度を増すことが可能である。
【００２５】
【発明の効果】
本発明によると、屋外に屋外補強支柱を設けて、その基礎への取り付けを単純支持とするので、弱い木造骨組構造に対して補強が可能で、特に総２階建ての１階の水平耐力増大に効果を発揮でき、かつ、基礎への負担が少ない補強が達成できる。
【００２６】
又、２階建ての１階の中天は狭くて補強の金物取付が困難であり、特に既築の家では、天井や床、又は壁などを大きく破り、補強工事後、修復することが必要で無駄な経費が多い。
【００２７】
これに対し、本発明の補強構造は、上記のような構成で、水平耐力補強構造として提供され、地震力や風力などによる水平力が建築物に加わった時に、軸組の水平耐力を増す構造とすることができ、建築基準法に定める壁量相当で大きな水平力に耐える剛性を発揮し、また、基礎への負担を少なくできる。
このように、筋交いの不足している箇所や筋交いの取り付け困難な場所、補強金物の取り付けが困難な構造の木造骨組家屋において、木造建築物の仕口部を固め、水平耐力を持たせ、既存建築物の鉛直構面内においては補強材（筋交い）を補って、耐力壁の量と配置の不均衡を是正して、堅固な建築物に転換して家屋の倒壊を防ぎ、既築の建築物の補強構造としての適用が容易で、その補強工事において、外壁を外したりすることなく、また、基礎の補強工事も軽減して施工できるので、工事費用が安く、更には、部分的な補強も可能である等の利点もある。
【図面の簡単な説明】
【図１】本発明の水平耐力補強支柱の基礎締結構造の例を示す断面図である。
【図２】本発明の基礎締結構造を適用した補強構造を示す模式正面図である。
【図３】本発明の基礎締結構造を適用した補強構造の例を示す模式斜視図である。
【図４】本発明の基礎締結構造を適用した補強構造の例を示す模式斜視図である。
【図５】本発明の基礎締結構造を適用した補強構造の例を示す模式斜視図である。
【図６】構造力学モデル例を示す図である
【図７】基礎締結構造の他例を示す正面図である。
【図８】基礎締結構造の他例を示す正面図である。
【図９】基礎締結構造に用いる基礎締結具の他例を示す正面図である。
【図１０】基礎締結構造に用いる基礎締結具の他例を示す正面図である。
【符号の説明】
１屋外補強支柱
１５孔
２室内柱
３締結具
３５引っかけ部
３ａ基礎締結具
６補強材
７上天梁（屋内梁）
８基礎[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a reinforcement structure that enhances the deformation rigidity of an existing wooden building and enhances structural horizontal strength.In particular, in an existing framed wooden building, an outer wall of a reinforcing point of the building is provided. TECHNICAL FIELD The present invention relates to a technique for fastening a foundation for a horizontal strength reinforcing column of a wooden building, in which a reinforcing material can be easily attached from the outside and inside of the building without significantly breaking the building.
In the description of the present invention, indoors and outdoors are distinguished by using the outer wall of a house as a boundary, the inside as indoors, and the outside as outdoors.
[0002]
[Prior art]
The opinion that the seismic damage of timber-framed wooden structures is greatly affected by the strength of the joints is a consensus opinion among many wooden building researchers, and as the most reliable means of increasing the strength of joints. The Japan Housing and Wood Technology Center, which is commonly called the "Z-marked hardware", was specified in 1978 by the "Hardware Standard for Framing Method", and similar fired hardware and bracing plates. It is well known that various hardware such as a chevron plate, a corner plate and the like are provided, and a hole-down hardware to be attached to a base and a pillar is provided.
[0003]
Further, improved reinforcing metal fittings have been proposed as disclosed in JP-A-8-302834, JP-A-8-338070 and JP-A-10-131295.
However, in many existing houses using conventional wooden frame construction methods, the mounting of the above-mentioned reinforcing brackets is insufficient, and bracing for increasing the rigidity of the vertical structure is desired, but members with thicker dimensions are expected. In addition, not only are many buildings with insufficient wall volume ratios, but also the arrangement tends to be inappropriate, and in order to solve these problems, Japanese Patent Application No. 2001-028763 (hereinafter referred to as the present application) filed by the present inventors. Prior art 1) has already been proposed.
[0004]
[Problems to be solved by the invention]
As described above, prior art 1 has been proposed as a reinforcement structure of an existing wooden building that solves the conventional problem. However, a positive measure for reducing the moment generated at the foundation of the outdoor reinforcement column has been considered. There is no problem.
Of course, it is ideal to perform sufficient foundation work and fix the column support of the column-type ramen as the fixed support, which maximizes the horizontal strength and is ideal as reinforcement, but it is difficult in terms of money and space. Often.
In the portal type rigid frame structure, a horizontal bearing strength can be generated even by a support method that does not generate a moment in the foundation (support that does not restrict the rotation of the pillar base-hereinafter referred to as “simple support”). In other words, by adopting a structure that simply supports the outdoor reinforcement columns with a gate-type rigid frame structure, it is possible to achieve a structure that does not bear the moment on the foundation while having horizontal strength, but in the prior art 1, the foundation fastening of the outdoor reinforcement columns is possible. Since the portion does not have a rotating support structure, there remains a problem that a moment is imposed on the base portion.
[0005]
The present invention has been made in view of the above points, and in an existing wooden timber building, reinforcing is performed using an outdoor reinforcing column, and a reinforcing metal is attached to a beam mounted on the outdoor reinforcing column. In the case of improving the horizontal strength of a house with a column-structure consisting of columns and beams, it is possible to reduce the occurrence of moments on the foundation by simply fixing the outdoor reinforcement columns to the foundation as simple support. It is an object of the present invention to provide a foundation fastening structure of a horizontal strength reinforcing column of a wooden building that can protect the building from seismic force.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a foundation fastening structure (a claim 1) of a horizontal strength reinforcing column of a wooden building of the present invention is:
In a wooden structure with a frame structure, an outdoor reinforcing column is provided outdoors as a horizontal strength reinforcing column, and the outdoor reinforcing column is connected to an indoor beam. The reinforcing structure was formed, and the outdoor reinforcing column was rotatably joined to the foundation portion.
[0007]
In addition, the foundation fastening structure of the horizontal strength reinforcing column of the wooden building of the present invention (claim 2)
In the wooden structure of the frame structure, an outdoor reinforcing column as a horizontal strength reinforcing column is provided along the outer wall on both ends of the end wall along the outer wall, and an outdoor beam is provided so as to be mounted on the outdoor reinforcing column. An outdoor beam was joined to form a reinforcing structure in which a portal structure was formed by an outdoor reinforcing column and an outdoor beam as a frame, and the outdoor reinforcing column was rotatably joined to a foundation portion.
[0008]
Further, in the foundation fastening structure of the horizontal strength reinforcing column of the wooden building according to claim 1 or 2, the outdoor reinforcing column and the foundation are connected to one outdoor reinforcing column by using a plurality of foundation fasteners. There is an aspect (claim 3) in which the fastening is performed.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, for ease of explanation, an embodiment will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing a typical example of a foundation fastening structure of an outdoor reinforcing column as a horizontal strength reinforcing column, and FIGS. 2 to 5 show examples of a reinforcing structure in which a portal structure is formed by an outdoor reinforcing column and a beam as a frame. FIG. 6 is a diagram showing an example of a structural mechanical model.
[0010]
FIG. 2 is a schematic front view showing a skeleton example in a state where a reinforcement structure is applied to the left half and a reinforcement structure is not applied to the right half in a two-story house.
In FIG. 2, the horizontal force due to an earthquake or the like occurs in the horizontal direction of the figure. For example, when the horizontal strength of the first floor 1F is examined, the dynamic model is as shown in FIG. It may be considered that it is located at the equivalent position G, and a deformation as shown by a dotted line in FIG. 6 occurs.
It can be said that the smaller the horizontal displacement at this time, the higher the horizontal proof stress. A good method for increasing the horizontal proof stress is to insert a member (brace) connecting the points a and d and the points b and c in FIG. 6 and securely fasten the joint with a metal fitting (reinforcing material) or the like. Is to make a bearing wall by sticking structural plywood etc. It is often difficult to make such modifications in an existing house due to internal passageways (openings) and costs.
[0011]
As a next method, there is a method of increasing moment rigidity at point a and point b in FIG. 6 (attaching a metal fastener), but point a and point b in FIG. In the gap between the ceiling T1 and the first floor, which is commonly referred to as the middle heaven 4, there is often no gap enough for a person to enter, and it is not often the case that metal fittings cannot be installed.
[0012]
Therefore, as a reinforcing structure, an outdoor reinforcing column 1 (not shown in the right half of FIG. 2) for reinforcing outdoors is built along the outer wall 22 relative to the position of the indoor column 2 already installed indoors. The outdoor reinforcing column 1 is fastened to the existing indoor column 2 with a fastener 3 (such as a coach screw or a screw), and the base 20, the rim 21a, and the eaves girder 21b are also fastened with the fastener 3. At the same time, it is fastened to the foundation 8 with the fastener 3a to increase the bending rigidity of the indoor column 2, and it is much easier for a person to enter than the middle sky 4 at the upper sky 5 (points e and f in FIG. 6). ), By reinforcing the joints (ports) between the upper beams 7 as indoor beams suspended on the indoor columns 2 and the indoor columns 2 with the reinforcing material 6, the horizontal force generated in the middle sky 4 is It is designed to be received by a portal composed of an indoor pillar 2 reinforced by an outdoor reinforcing pillar 1 and an upper beam 7. It is.
In this case, it is most preferable that the left and right outdoor reinforcing columns 1 and 1 and the upper ceiling beam 7 form a gate-shaped configuration. However, in a place where the outdoor reinforcing column 1 stands only on one side, one outdoor reinforcing column 1 It is needless to say that a semi-portion configuration with the upper beam 7 is also effective.
[0013]
In addition, as a result of calculation in which a horizontal force of 100 kg was applied to the point G in FIG. 6, the horizontal displacement when the reinforcing bracket (not shown) was attached to the middle beam 40 was 4.4 cm, In this reinforcing structure, the horizontal displacement was 2.0 cm, and the horizontal rigidity more than doubled could be obtained even when the basic fastening portion (points c and d in the figure) was simply supported.
[0014]
As the reinforcing member 6 for reinforcing the upper beam 7, it is preferable to use a long metal truss member. Since bending strength is concentrated on the upper beam 7, reinforcement for the purpose of increasing the rigidity and strength of the beam is important. For this purpose, as shown in FIG. 2, as a truss member, as shown in FIG. 2, it is most reasonable to attach a reinforcing member 6 that forms a triangle of a vertical construction surface of the upper beam 7, and the efficiency is high.
In addition, since the fastener 3 penetrates the outer wall 22 to fasten the outdoor reinforcing column 1 and the indoor column 2, it is necessary to perform sealing against rain.
[0015]
Next, FIG. 3 is a schematic perspective view showing an example of a reinforcing structure in a two-story house.
In the frame structure of a wooden building, this reinforcing structure is paired with the outdoor reinforcing columns 1 and 1 along the outer wall at a position not opposed to the indoor column 2 already provided indoors, that is, at a position shifted from the indoor column 2. And a joint (connecting portion) between the outdoor reinforcing columns 1, 1 and the existing indoor beams (existing upper beams 7a) is reinforced with a reinforcing material 6a, and the outdoor reinforcing columns 1, 1 and the existing upper beams 7a are framed. It forms a portal structure. Also in this case, the outdoor reinforcing column 1 is fastened to the base 20, the rim 21a, and the eaves girder 21b with the fastener 3, and at the same time, is fastened to the foundation 8 with the foundation fastener 3a.
Further, as shown in the example of FIG. 3, it is preferable that the joint between the upper ceiling beam 7 originally mounted on the indoor column 2 and the indoor column 2 is also reinforced with the reinforcing material 6.
[0016]
Next, FIG. 4 is a schematic perspective view showing an example of a reinforcing structure in a two-story house.
In the frame structure of a wooden building, this reinforcing structure is paired with the outdoor reinforcing columns 1 and 1 along the outer wall at a position not opposed to the indoor column 2 already provided indoors, that is, at a position shifted from the indoor column 2. And a new indoor beam (new upper beam 7b) is newly provided so as to be mounted on the outdoor reinforcing columns 1 and 1, and a joint portion (connecting portion) between the outdoor reinforcing columns 1 and 1 and the new upper beam 7b is provided. Is reinforced with a reinforcing material 6b, and as a frame, a portal structure is formed by the outdoor reinforcing columns 1, 1 and a new upper beam 7b. The outdoor reinforcing column 1 is fastened to the base 20, the rim 21a, and the eaves girder 21b with the fastener 3, and at the same time, is fastened to the foundation 8 with the foundation fastener 3a.
[0017]
Next, FIG. 5 is a schematic perspective view showing an example of a reinforcing structure in a two-story house.
In this frame structure of a wooden building, in the frame structure of a wooden building, outdoor reinforcement columns 1, 1 are provided along the outer wall at both ends of the end wall 80, and the outdoor beams 7c are mounted on the outdoor reinforcement columns 1, 1. The outdoor beam 7c is joined to the outdoor reinforcing columns 1 and 1 and the joint (joint portion) is reinforced with a reinforcing material 6c. As a frame, the outdoor reinforcing columns 1 and 1 and the outdoor beam 7c are connected to each other. It forms a portal structure.
In this case, an intermediate outdoor beam 7d is also provided at a lower portion (midway in the height direction) between the outdoor reinforcing columns 1 and 1 to further strengthen the horizontal strength. Although not shown, the outdoor reinforcing column 1 is fastened to a base, a rim, or the like by fasteners, and is simultaneously fastened to a foundation by fasteners.
[0018]
It is needless to say that a reinforcing structure combining the reinforcing structures shown in FIGS. 1 to 5 can be obtained.
[0019]
FIG. 5 illustrates a reinforcing structure having a horizontal proof strength in a plane in which the outdoor reinforcing columns 1 are arranged.
In FIG. 5, the horizontal strength is also reinforced in the direction in which the outdoor reinforcement columns 1 are arranged. In this case, the outdoor reinforcement columns 1 and 1 are connected to each other with a reinforcing material in a cross-like manner, so that the outdoor reinforcement columns 1 are connected. Horizontal rigidity is provided in the direction planes (the direction of arrow A and the direction of arrow B).
In this case, it is important to provide reinforcement in the direction in which a plurality of outdoor reinforcement columns 1, 1 are lined up, and it is important to fasten so as to form a triangle with the brace metal fittings 9a and the horizontal metal fittings 9b as reinforcements. Most preferred. Although the horizontal metal 9b is not always necessary, it is preferable to provide the horizontal metal 9b for forming a triangle.
By the reinforcement using the metal fittings 9a and 9b, the rigidity of the vertical construction surface, that is, the rigidity as a bearing wall increases, so that the strength against horizontal force such as an earthquake can be increased.
In addition, it is needless to say that the reinforcement structure in the direction in which the outdoor reinforcement columns 1 are arranged can be applied to the reinforcement structure shown in FIGS.
[0020]
The fastening structure of the outdoor reinforcing column 1 to the foundation 8 is made by simple support, and a typical example is shown in FIG.
In this fastening structure, a hole 15 is made in the outdoor reinforcing column 1 extending to the base portion, a hook portion 35 of the base fastener 3a is hooked on this portion, and the opposite side is fastened to the base 8 with a base bolt 36. With this configuration, the hook portion 35 is a joint that transmits the pull-out force of the outdoor reinforcing column 1 but does not transmit the moment, and can simply support the reinforcing column.
In addition, after passing the hook portion 35 of the base fastener 3a through the hole 15 of the outdoor reinforcing column 1, it is also effective to attach a stopper plug in the upper gap of the hole 15 in order to prevent detachment, in order to securely perform the basic fastening. It is.
[0021]
FIG. 7 is a front view showing another example of the foundation fastening structure. In this illustrated example, two foundation fasteners 3a are used. The number of the base fasteners 3a is not limited, and the base fasteners 3a may be attached to the individual holes 15 with a plurality of holes 15 provided on the outdoor reinforcing column 1 side.
[0022]
FIG. 8 is a front view showing another example of the foundation fastening structure. In this illustrated example, the structure of the portal-type ramen is in a direction perpendicular to the plane of the paper, and the directions of rotational degrees of freedom necessary for releasing the moment to the foundation are not shown. In the X-axis rotation direction. For this reason, the pin 16 (bolt) is passed in the X-axis direction, and the basic reinforcement 3a in the form of a twist is attached to the pin 16 so that the outdoor reinforcement column 1 is simply supported.
[0023]
In the above example, for convenience of explanation, the base fastener 3a is an example of a processed product having a flat plate shape. However, as shown in FIG. 9, a processed product of a round bar metal may be used. Further, as shown in FIG. 10, a generally well-known length such as a turnbuckle 36 or a slide mechanism (not shown) is used for adjusting the length of the base fastener 3a and / or adjusting the mounting position of the base fastener 3a. Since an adjusting mechanism can be used and has little relation to the root of the present invention, a detailed description is omitted.
[0024]
It is preferable that the base fastener 3a be a plated material or stainless steel as an important structural component outdoors, with sufficient consideration given to rust prevention and weather resistance.
Note that the shape of the outdoor reinforcing column is not limited to the illustrated example.
As described above, in the present invention, the rigidity of the vertical structure, that is, the rigidity as a load-bearing wall is increased, and even if horizontal force is generated in a house, the moment load on the foundation is drastically reduced. It is possible to increase the strength against horizontal forces such as earthquakes.
[0025]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, since an outdoor reinforcement | strengthening support | pillar is provided outdoors and the installation to the foundation is made simple support, reinforcement is possible for a weak wooden frame structure, and especially the horizontal strength of the first floor of a total of two stories is increased. In addition, reinforcement can be achieved with less burden on the foundation.
[0026]
In addition, the middle floor of the two-story first floor is narrow and it is difficult to attach reinforcing hardware. Especially in an existing house, the ceiling, floor, or walls are severely broken, and it is necessary to repair it after reinforcement work. And wasteful expenses.
[0027]
On the other hand, the reinforcing structure of the present invention is provided as a horizontal strength reinforcing structure with the above-described configuration, and is a structure that increases the horizontal strength of the frame when horizontal force due to seismic force or wind force is applied to the building. And exhibits rigidity to withstand a large horizontal force corresponding to the amount of walls stipulated in the Building Standards Law, and also reduces the burden on the foundation.
In this way, in places with insufficient bracing, places where it is difficult to attach braces, and wooden framed structures where it is difficult to attach reinforcing hardware, the joints of wooden buildings are hardened and horizontal strength is given, In the vertical structure of the building, reinforcing materials (brace) are supplemented to correct the imbalance in the amount and arrangement of the load-bearing walls, convert to a solid building, prevent the house from collapsing, and build the existing building. It is easy to apply as a reinforcement structure for objects, and it can be installed without removing the outer wall and reducing the foundation reinforcement work, so the construction cost is low, and furthermore, partial reinforcement There is also an advantage that it is possible.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of a foundation fastening structure of a horizontal strength reinforcing column according to the present invention.
FIG. 2 is a schematic front view showing a reinforcing structure to which the basic fastening structure of the present invention is applied.
FIG. 3 is a schematic perspective view showing an example of a reinforcing structure to which the basic fastening structure of the present invention is applied.
FIG. 4 is a schematic perspective view showing an example of a reinforcing structure to which the basic fastening structure of the present invention is applied.
FIG. 5 is a schematic perspective view showing an example of a reinforcing structure to which the basic fastening structure of the present invention is applied.
FIG. 6 is a diagram showing an example of a structural mechanical model. FIG. 7 is a front view showing another example of a foundation fastening structure.
FIG. 8 is a front view showing another example of the foundation fastening structure.
FIG. 9 is a front view showing another example of the base fastener used for the base fastening structure.
FIG. 10 is a front view showing another example of the base fastener used for the base fastening structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outdoor reinforcement pillar 15 Hole 2 Indoor pillar 3 Fastener 35 Hook part 3a Basic fastener 6 Reinforcement 7 Upper beam (indoor beam)
8 Basics

Claims

In a wooden structure of a frame structure, an outdoor reinforcing column is provided outdoors as a horizontal strength reinforcing column, and the outdoor reinforcing column and an indoor beam are fastened to form a semi-portal or portal structure with these columns and beams as a frame. A foundation fastening structure for a horizontal strength reinforcement column of a wooden building, wherein the reinforcement member has a formed reinforcement structure, and the outdoor reinforcement column is rotatably joined to a foundation portion.

In the wooden structure of the frame structure, an outdoor reinforcing column as a horizontal strength reinforcing column is provided along the outer wall on both ends of the end wall along the outer wall, and an outdoor beam is provided so as to be mounted on the outdoor reinforcing column. An outdoor beam is joined to form a reinforcing structure in which a portal structure is formed by an outdoor reinforcing column and an outdoor beam as a frame, and the outdoor reinforcing column is rotatably joined to a foundation portion. The foundation fastening structure of the horizontal strength reinforcement columns of wooden buildings.

The foundation fastening structure of a horizontal strength reinforcing column of a wooden building according to claim 1 or 2, wherein the outdoor reinforcing column and the foundation are fastened to one outdoor reinforcing column using a plurality of foundation fasteners. .