JP4551010B2 - Steel foundation structure using channel steel - Google Patents

Steel foundation structure using channel steel Download PDF

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Publication number
JP4551010B2
JP4551010B2 JP2001068245A JP2001068245A JP4551010B2 JP 4551010 B2 JP4551010 B2 JP 4551010B2 JP 2001068245 A JP2001068245 A JP 2001068245A JP 2001068245 A JP2001068245 A JP 2001068245A JP 4551010 B2 JP4551010 B2 JP 4551010B2
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Japan
Prior art keywords
steel
base
bolt
channel
steel plate
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JP2001068245A
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Japanese (ja)
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JP2002266456A (en
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良道 河合
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Nippon Steel Corp
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Nippon Steel Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、住宅その他の建築基礎の上に施工される溝形鋼を用いた鋼製土台の構造に関する。
【0002】
【従来の技術】
主に住宅の建築では、図6に示すように、コンクリート造の基礎22の上に木製土台21を取り付け、その上に木造または形鋼製の壁枠組23を構築することが一般的である。
【0003】
しかし、木製土台21については経年劣化による乾燥収縮、ねじれ、反り、割れが起きやすい。しかも、木製土台21には、基礎22または壁枠組23とのボルト接合用孔24やほぞ孔を開孔する等の加工を施す必要があり、木製土台21の開孔箇所における耐力不足もしばしば問題となる。
【0004】
また、白蟻による被害や木材の腐食によって木製土台21が変形すると、建物が傾斜するなどの被害が生じ得るため、木製土台21に対しては防蟻処理、防腐処理を行なうことが一般的である。しかし、近年では防蟻剤等による薬害問題も住宅建築時に顧客が考慮する事項として軽視できないものとなっている。
【0005】
【発明が解決しようとする課題】
そのため、土台に形鋼等の鋼材を用いることが従来から考案されているが、以下の点で問題がある。
【0006】
(1)図7に示すように、鋼製土台にH形鋼27を用いる場合(実開平5−67634号公報、特開平10−60911号公報、特開平10−183639号公報、特開平10−227039号公報、特開平8−144364号公報、特開平8−144365号公報等)において、上部ボルト25またはアンカーボルト26等を溶接でH形鋼27に取付けるのは非常に煩雑である。
また、H形鋼27のフランジにボルト取付孔を開孔して上部ボルト25等を取付ける場合には、H形鋼27のフランジに加工を施すことから鋼製土台の耐力が低下する。
さらに、H形鋼27のフランジにボルト取付箇所がある場合は、H形鋼27の荷重を支えるウェブとの間に偏心Wが生じるため(図7参照)、H形鋼27の局部変形が生じやすくなる。したがって、フランジ部分にあるボルト取付箇所毎にスチフナや補強金物等で補強する必要が生じ、部品点数の増加による作業性の低下およびコストの増大を招く。
【0007】
(2)図8に示すように、鋼製土台にボックス形鋼28を用いる場合(特開平9−268699号公報等)では、ボルト孔29と、ボルト取付箇所毎にボルト締結作業用の開口30とをボックス形鋼28に設ける必要があるため、鋼製土台の耐力が低下する。
また、ボックス形鋼28には、根太等の接合のためにアングル状の接合金物31を溶接で取付ける必要があり煩雑である。
【0008】
(3)図9に示すように、鋼製土台に溝形鋼32を1本のみ用いる場合(特開平10−68184号公報等)では、ボルト取付位置が溝形鋼32のフランジ上にあるため、溝形鋼32に偏心荷重が生じて局部変形が生じやすくなる。したがって、溝形鋼32のフランジ部分にあるボルト取付箇所毎に、補強金物33やスチフナ等で補強する必要が生じ、部品点数の増加による作業性の低下およびコストの増大を招く。
【0009】
本発明は上記従来技術の問題点を除くためにされたものであり、ボルト取付けのための溶接や、フランジ部への開孔による耐力低下がない鋼製土台の構造を提供することを目的とする。
【0010】
【課題を解決するための手段】
上記課題を解決するため、第1の発明は、断面が線対称形状である一対の溝形鋼2が、互いのウェブ部2aが背中合わせで起立してなるように基礎7の上に配置されており、溝形鋼2のウェブ部2aに挟まれた状態で連結金物3が固定され、前記連結金物3が、ファスナー挿通孔を開孔した鋼板の上端に上部ボルトまたは前記鋼板の下端にアンカー部材を取り付けたボルト付鋼板であることを特徴とする鋼製土台1の構造に関する。
【0011】
ここで、連結金物3は、後述のボルト付鋼板4やアンカーボルト10のように、基礎7または壁枠組8と鋼製土台1とを連結、あるいは基礎7および壁枠組8と鋼製土台1を連結する金具を包含するものである。
【0012】
また第2の発明は、第1の発明について、溝型鋼2のウェブ部2aと連結金物3とを貫通するボルト等のファスナー6により、連結金物3が固定されていることを特徴とする。
【0014】
【発明の実施の形態】
<第1実施形態>
以下、本発明を図面に示す一実施形態に基づいて説明する。図1は、第1実施形態における鋼製土台の構造を示す斜視図であり、図2は第1実施形態における鋼製土台の構造の側面図である。また図3は、図2のA−A断面図である。
【0015】
本発明の鋼製土台1はコンクリート造の基礎7の上に配置され、木造あるいは溝形鋼で形成される鋼製の壁枠組8を支えるものである。この鋼製土台1は、断面が線対称形状である一対の溝形鋼2と、溝形鋼2のウェブ部2aに挟まれて溝形鋼2の間に配置されるボルト付鋼板4と、必要に応じて溝形鋼2のウェブ部2aに挟まれて溝形鋼2の間に配置されるスペーサー5とから構成されている。
【0016】
本発明の鋼製土台1には、断面が線対称形状である溝形鋼2が一対必要であり、この溝形鋼2は、薄鋼板からロールフォーミング成形等の手段により成形される溝形鋼またはリップ溝形鋼であって、ウエブ部2aにはファスナー挿通孔が適宜開孔されているものである。
なお、溝形鋼2の長手方向中心を基準として線対称となるようにウェブ部2aにファスナー挿通孔を開孔すると、溝形鋼2は左右ともに同一形状のものを使用できるので好ましい。
【0017】
第1実施形態では、連結金物3としてボルト付鋼板4を用いている。
ボルト付鋼板4は、上下の幅が溝形鋼のウェブ部2aの幅以下である鋼板4a上下端部に、壁枠組8との連結用の上部ボルト4bや、基礎7に埋設されるアンカー部材4cを溶接で取り付けて形成される。
ここで、ボルト付鋼板4には、図4(A)に示すような鋼板4a上端に上部ボルト4bと鋼板4a下端にアンカー部材4cとの両方を備えたもの、図4(B)に示すような鋼板4a下端にアンカー部材4cのみを取付けたもの、図4(C)に示すような鋼板4a上端に上部ボルト4bのみを取付けたもの、がある。
【0018】
また、ボルト付鋼板4の鋼板4aには、溝形鋼のウエブ2aに開孔されたファスナー挿通孔に対応するようにファスナー挿通孔4dが開孔されている。なお、溝形鋼2とボルト付鋼板4との取付誤差を吸収するために、ファスナー挿通孔4dは、鋼板4aの幅方向(溝形鋼2の長手方向)に幅広となる長孔4eとするのが好ましい。
【0019】
スペーサー5は、ボルト付鋼板4を形成する鋼板4aを、上部ボルト等を取付けずにそのまま用いたものである。スペーサー5は、壁枠組8等からの圧縮力が鋼製土台へ作用する箇所(例えば柱の下など)に、鋼製土台1の補強のために挿入される。
【0020】
ここで、図1から図3に示された鋼製土台1と基礎7および壁枠組8との施工について、順を追って説明する。
【0021】
(a)まず、鋼板4a下端にアンカー部材4cを有するボルト付鋼板4を、アンカー部材4cが基礎7に埋設されるように一定間隔で配置し、型枠にコンクリートを流しこんで基礎7を成形する。
【0022】
(b)次に、基礎7にアンカー部材4cが埋め込まれているボルト付鋼板4や、鋼板4a上端に上部ボルト4bを有するボルト付鋼板4などを挟みこんだ状態で、断面が線対称形状である一対の溝形鋼2を、互いのウェブ部2aが背中合わせで起立してなるように基礎7の上に配置する。
【0023】
ここで、図3からも明らかなように、本発明の鋼製土台1では、断面が線対称形状である一対の溝形鋼2に挟まれた状態で連結金物3(ボルト付鋼板4)が配置されている。つまり、本発明の鋼製土台1では、常に鋼製土台1の中心に上部ボルト4bやアンカー部材4cが位置するため、鋼製土台1の中心で荷重が支えられ、偏心荷重が生じることもない。
さらに、ボルト付鋼板4の鋼板4aが、鋼製土台1にかかる圧縮力に対する補強材として機能し、かつ溝形鋼2のフランジには、開孔や溶接等の加工が施されていないことから、従来技術の鋼製土台に比べて耐力が大幅に向上している。
【0024】
なお、壁枠組8等からの圧縮力が作用する位置(柱の下など)には、溝形鋼2の間にスペーサー5を挟みこんでおくと、更なる鋼製土台の耐力向上を図ることができる。
【0025】
(c)そして、溝形鋼2のファスナー挿通孔と、ボルト付鋼板4またはスペーサー5のファスナー挿通孔とを貫通するようにボルト等のファスナー6を挿通し、一対の溝形鋼2と、ボルト付鋼板4またはスペーサー5とを固定して鋼製土台1を形成する。
【0026】
従来例では、鋼製土台の側面に対して垂直となる面(例えば、壁枠組を取付けたフランジの下など)にボルト取付箇所があるため、作業員は、下からボルト取付箇所を覗きこむような姿勢など、ボルト締結作業を不自然な姿勢で行なわなければならなかった。しかし、本発明では、ファスナー取付部は鋼製土台の側面(溝形鋼のウェブに対して正面)にあり、作業者は無理な姿勢でファスナーを取付ける必要がないため、ファスナー取付作業が非常に容易である。
【0027】
(d)さらに、木造または溝形鋼で形成される鋼製の壁枠組8を鋼製土台1の上に構築する。鋼製土台1と壁枠組8との結合は、壁枠組8の開口部8aを挿通する鋼製土台1の上部ボルト4bに、ナット9を締結することで行なわれる。
ここで、図2に示すように、柱に取付けたホールドダウン金物8bと上部ボルト4bとの結合部は、柱からの引張力を負担している。また、壁枠組8の下枠材8cと上部ボルト4bとの結合部は、主に壁枠組8と鋼製土台1との水平方向のズレ止めの役目を果たしている。
【0028】
<第2実施形態>
図5は、第2実施形態の側面図を示したものであり、連結金物3としてアンカーボルト10を用いることにより、基礎7および鋼製土台1と壁枠組8とが連結されている。なお、第2実施形態の説明において、第1実施形態の構成と同じ構成には同一符号を付与して説明を省略する。
【0029】
第2実施形態では、アンカー部分が基礎に埋設されているアンカーボルト10とスペーサー5とを、断面が線対称形状である一対の溝形鋼2で挟み込む。そして、一対の溝形鋼2とスペーサー5とを、スペーサー5のファスナー挿通孔を貫通するファスナー6で固定して鋼製土台1が形成されている。さらに、壁枠組8の開口部を挿通するアンカーボルト10にナット9を締結して、鋼製土台1と壁枠組8とが固定されている。
なお、図5に示すように、第2実施形態においても、壁枠組8と鋼製土台1との水平方向のズレを防止するため、上部ボルト4bを鋼板4aの上端に備えた鋼板ボルト付き鋼板4を使用するとよい。
【0030】
【発明の効果】
以上の説明から明らかなように、本発明では土台に鋼材を使用するため、経年劣化による乾燥収縮等がなく、かつ白蟻被害・腐食対策における薬害問題も解決できる。
【0031】
また、本発明では、断面が線対称形状である一対の溝形鋼に挟まれた状態で連結金物が配置されており、常に鋼製土台の中心に上部ボルトやアンカー部材が位置するようになっている。つまり、鋼製土台の中心で荷重が支えられることから、偏心荷重が生じることもない。
【0032】
さらに本発明では、ボルト付鋼板の鋼板やスペーサーが、鋼製土台にかかる圧縮力に対する補強材として機能し、かつ溝形鋼のフランジには、開孔や溶接等の加工が施されていないことから、従来技術の鋼製土台に比べて耐力が大幅に向上している。
【0033】
本発明の鋼製土台は、ファスナー接合により組立可能なため、建設現場で溝形鋼に上部ボルトやアンカー部材などを溶接する必要はない。しかも、ファスナー取付部は鋼製土台の側面にあり、作業者は無理な姿勢でファスナーを取付ける必要がないため、ファスナー取付作業も非常に容易であり、作業の効率化を図ることができる。
【0034】
また、本発明の鋼製土台は、一対の溝形鋼と連結金物等とがファスナー接合されているため、住宅のリフォーム時や鋼製土台が部分的に損傷した場合などでも溝形鋼を一本ずつ交換することが可能であり、メンテナンス性に優れている。さらに、住宅を取り壊す際にも鋼製土台の解体が容易であることから、鋼材のリサイクル性にも優れている。
【図面の簡単な説明】
【図1】本発明の第1実施形態における鋼製土台の構造を示す斜視図である。
【図2】本発明の第1実施形態における鋼製土台の構造の側面図である。
【図3】図2のA−A断面図である。
【図4】(A)は鋼板上端に上部ボルトと鋼板下端にアンカー部材との両方を備えたボルト付鋼板であり、(B)は鋼板下端にアンカー部材を取付けたボルト付鋼板であり、(C)は鋼板上端に上部ボルトを取付けたボルト付鋼板である。
【図5】本発明の第2実施形態における鋼製土台の構造の側面図である。
【図6】従来の木製土台を示す図である。
【図7】H形鋼を用いた鋼製土台の従来例を示す図である。
【図8】ボックス形鋼を用いた鋼製土台の従来例を示す図である。
【図9】溝形鋼を1本のみ用いた鋼製土台の従来例を示す図である。
【符号の説明】
1 鋼製土台
2 溝形鋼
2a ウェブ部
3 連結金物
4 ボルト付鋼板
4a 鋼板
4b 上部ボルト
4c アンカー部材
4d ファスナー挿通孔
4e 長孔(ファスナー挿通孔)
5 スペーサー
6 ファスナー
7 基礎
8 壁枠組
8a 開口部
8b ホールドダウン金物
8c 下枠材
9 ナット
10 アンカーボルト
21 木製土台
22 基礎
23 壁枠組
24 ボルト接合用孔
25 上部ボルト
26 アンカーボルト
27 鋼製土台(H形鋼)
28 鋼製土台(ボックス形鋼)
29 ボルト孔
30 開口
31 接合金物
32 鋼製土台(溝形鋼)
33 補強金物
W H形鋼のウェブとフランジ上のボルト取付箇所との偏心
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a steel base using channel steel constructed on a building foundation such as a house.
[0002]
[Prior art]
Mainly in the construction of a house, as shown in FIG. 6, it is common to attach a wooden base 21 on a concrete foundation 22 and to construct a wooden or shaped steel wall frame 23 thereon.
[0003]
However, with respect to the wooden base 21, drying shrinkage, twisting, warping, and cracking due to aging are likely to occur. In addition, it is necessary to process the wooden base 21 such as opening a bolt connection hole 24 and a mortise hole with the foundation 22 or the wall frame 23, and a lack of proof stress at the opening of the wooden base 21 is often a problem. It becomes.
[0004]
In addition, if the wooden base 21 is deformed due to damage by white ants or corrosion of wood, damage such as tilting of the building may occur. Therefore, the wooden base 21 is generally subjected to ant-proofing and antiseptic processing. . However, in recent years, the problem of phytotoxicity caused by ant-proofing agents has not been neglected as a matter for customers to consider when building a house.
[0005]
[Problems to be solved by the invention]
For this reason, it has been conventionally devised to use a steel material such as a shape steel as a base, but there are problems in the following points.
[0006]
(1) As shown in FIG. 7, when H-shaped steel 27 is used for a steel base (Japanese Utility Model Laid-Open No. 5-67634, Japanese Patent Laid-Open No. 10-60911, Japanese Patent Laid-Open No. 10-183639, Japanese Patent Laid-Open No. 10- 227039, JP-A-8-144364, JP-A-8-144365, etc.), it is very complicated to attach the upper bolt 25 or the anchor bolt 26 to the H-section steel 27 by welding.
Further, when the bolt mounting hole is opened in the flange of the H-shaped steel 27 and the upper bolt 25 or the like is attached, since the flange of the H-shaped steel 27 is processed, the yield strength of the steel base is lowered.
Furthermore, when there is a bolt mounting location on the flange of the H-shaped steel 27, an eccentricity W is generated between the H-shaped steel 27 and the web that supports the load of the H-shaped steel 27 (see FIG. 7). It becomes easy. Therefore, it is necessary to reinforce each bolt mounting location in the flange portion with a stiffener or a reinforcing hardware, resulting in a decrease in workability and an increase in cost due to an increase in the number of parts.
[0007]
(2) As shown in FIG. 8, when the box-shaped steel 28 is used for the steel base (Japanese Patent Laid-Open No. 9-268699, etc.), the bolt hole 29 and the bolt fastening work opening 30 for each bolt mounting location. Therefore, the proof stress of the steel base is lowered.
Further, it is necessary to attach an angle-shaped joint metal 31 to the box-shaped steel 28 by welding for joining joists, etc., which is complicated.
[0008]
(3) As shown in FIG. 9, when only one grooved steel 32 is used for the steel base (JP-A-10-68184, etc.), the bolt mounting position is on the flange of the grooved steel 32. An eccentric load is generated in the grooved steel 32 and local deformation is likely to occur. Therefore, it is necessary to reinforce with bolts 33, stiffeners, etc. at each bolt mounting location on the flange portion of the channel steel 32, resulting in a decrease in workability and an increase in cost due to an increase in the number of parts.
[0009]
The present invention has been made to eliminate the above-mentioned problems of the prior art, and an object thereof is to provide a structure of a steel base which does not have a decrease in yield strength due to welding for bolt mounting or opening to a flange portion. To do.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the first invention is that a pair of channel steels 2 having a line-symmetric cross section are arranged on the foundation 7 so that the web portions 2a stand up back to back. cage, is fixed connected gold product 3 while being sandwiched between the web portion 2a of Mizokatachiko 2, the connecting fittings 3, anchors a lower end of the upper bolt or the steel sheet fastener insertion holes on the upper end of the opening steel plate about the structure of the steel base 1, characterized in that the bolted steel plates fitted with a member.
[0011]
Here, the connecting hardware 3 connects the foundation 7 or the wall frame 8 and the steel base 1 or the foundation 7 and the wall frame 8 and the steel base 1 like a bolted steel plate 4 and an anchor bolt 10 described later. Includes fittings to be connected.
[0012]
In addition, the second invention is characterized in that the connection hardware 3 is fixed by a fastener 6 such as a bolt penetrating the web portion 2a of the grooved steel 2 and the connection hardware 3 in the first invention.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
<First Embodiment>
Hereinafter, the present invention will be described based on an embodiment shown in the drawings. FIG. 1 is a perspective view showing the structure of the steel base in the first embodiment, and FIG. 2 is a side view of the structure of the steel base in the first embodiment. 3 is a cross-sectional view taken along the line AA in FIG.
[0015]
The steel base 1 of the present invention is disposed on a concrete foundation 7 and supports a steel wall frame 8 formed of wooden or channel steel. The steel base 1 includes a pair of channel steels 2 having a line-symmetric cross section, and a bolted steel plate 4 disposed between the channel steels 2 between the web portions 2a of the channel steels 2; It is comprised from the spacer 5 arrange | positioned between the channel steel 2 by being pinched | interposed into the web part 2a of the channel steel 2 as needed.
[0016]
The steel base 1 of the present invention requires a pair of groove steels 2 having a line-symmetric cross section. The groove steels 2 are formed from thin steel plates by means such as roll forming. Or it is lip channel steel, Comprising: The fastener insertion hole is appropriately opened by the web part 2a.
In addition, it is preferable to open the fastener insertion hole in the web portion 2a so as to be line symmetric with respect to the longitudinal center of the grooved steel 2 because the grooved steel 2 can have the same shape on both the left and right sides.
[0017]
In the first embodiment, a steel plate 4 with bolts is used as the connecting hardware 3.
The bolted steel plate 4 includes an upper bolt 4b for connection with the wall frame 8 and an anchor member embedded in the foundation 7 at the upper and lower ends of the steel plate 4a whose vertical width is equal to or less than the width of the web portion 2a of the grooved steel. It is formed by attaching 4c by welding.
Here, the bolted steel plate 4 includes both the upper bolt 4b at the upper end of the steel plate 4a and the anchor member 4c at the lower end of the steel plate 4a as shown in FIG. 4A, as shown in FIG. 4B. There are those in which only the anchor member 4c is attached to the lower end of the steel plate 4a and those in which only the upper bolt 4b is attached to the upper end of the steel plate 4a as shown in FIG.
[0018]
The steel plate 4a of the bolted steel plate 4 is provided with fastener insertion holes 4d so as to correspond to the fastener insertion holes formed in the grooved steel web 2a. In order to absorb mounting errors between the channel steel 2 and the steel plate 4 with bolts, the fastener insertion hole 4d is a long hole 4e that is wide in the width direction of the steel plate 4a (longitudinal direction of the channel steel 2). Is preferred.
[0019]
The spacer 5 uses the steel plate 4a that forms the bolted steel plate 4 without attaching an upper bolt or the like. The spacer 5 is inserted to reinforce the steel base 1 at a location where the compressive force from the wall frame 8 or the like acts on the steel base (for example, under a column).
[0020]
Here, the construction of the steel base 1, the foundation 7 and the wall frame 8 shown in FIGS. 1 to 3 will be described in order.
[0021]
(A) First, the steel plate 4 with the bolt having the anchor member 4c at the lower end of the steel plate 4a is arranged at regular intervals so that the anchor member 4c is embedded in the foundation 7, and the foundation 7 is formed by pouring concrete into the formwork. To do.
[0022]
(B) Next, in a state where the bolted steel plate 4 in which the anchor member 4c is embedded in the foundation 7 or the bolted steel plate 4 having the upper bolt 4b at the upper end of the steel plate 4a is sandwiched, the cross section has a line symmetrical shape. A certain pair of channel steel 2 is arrange | positioned on the foundation 7 so that the mutual web part 2a may stand up back-to-back.
[0023]
Here, as is clear from FIG. 3, in the steel base 1 of the present invention, the connecting hardware 3 (steel 4 with bolts) is sandwiched between a pair of channel steels 2 having a line-symmetric cross section. Has been placed. That is, in the steel base 1 of the present invention, since the upper bolt 4b and the anchor member 4c are always located at the center of the steel base 1, the load is supported at the center of the steel base 1, and no eccentric load is generated. .
Further, the steel plate 4a of the bolted steel plate 4 functions as a reinforcing material against the compressive force applied to the steel base 1, and the flange of the channel steel 2 is not subjected to processing such as opening or welding. Compared to the steel base of the prior art, the yield strength is greatly improved.
[0024]
In addition, if the spacer 5 is sandwiched between the grooved steel 2 at a position where the compressive force from the wall frame 8 or the like acts (such as under the column), the strength of the steel base can be further improved. Can do.
[0025]
(C) Then, a fastener 6 such as a bolt is inserted so as to pass through the fastener insertion hole of the channel steel 2 and the steel plate 4 with bolt or the fastener insertion hole of the spacer 5, and a pair of channel steel 2 and bolt The steel base 1 is formed by fixing the attached steel plate 4 or the spacer 5.
[0026]
In the conventional example, there is a bolt mounting location on a surface perpendicular to the side surface of the steel base (for example, under the flange with the wall frame attached), so workers should look into the bolt mounting location from below. Bolt fastening work had to be done in an unnatural posture. However, in the present invention, the fastener mounting portion is on the side surface of the steel base (front side with respect to the channel steel web), and the operator does not need to mount the fastener in an unreasonable posture. Easy.
[0027]
(D) Further, a steel wall frame 8 formed of wooden or channel steel is constructed on the steel base 1. The steel base 1 and the wall frame 8 are joined by fastening a nut 9 to the upper bolt 4b of the steel base 1 that is inserted through the opening 8a of the wall frame 8.
Here, as shown in FIG. 2, the joint between the hold-down hardware 8b and the upper bolt 4b attached to the column bears a tensile force from the column. Further, the joint between the lower frame member 8c of the wall frame 8 and the upper bolt 4b mainly serves to prevent the horizontal displacement between the wall frame 8 and the steel base 1.
[0028]
<Second Embodiment>
FIG. 5 shows a side view of the second embodiment. By using anchor bolts 10 as the connecting hardware 3, the foundation 7 and the steel base 1 are connected to the wall frame 8. In the description of the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
[0029]
In 2nd Embodiment, the anchor bolt 10 and the spacer 5 with which the anchor part is embed | buried under the foundation are pinched | interposed with a pair of channel steel 2 whose cross section is line symmetrical. Then, the steel base 1 is formed by fixing the pair of channel steel 2 and the spacer 5 with the fastener 6 that penetrates the fastener insertion hole of the spacer 5. Further, a nut 9 is fastened to an anchor bolt 10 that is inserted through the opening of the wall frame 8, and the steel base 1 and the wall frame 8 are fixed.
As shown in FIG. 5, in the second embodiment as well, a steel plate with a steel plate bolt provided with an upper bolt 4b at the upper end of the steel plate 4a in order to prevent horizontal displacement between the wall frame assembly 8 and the steel base 1. 4 should be used.
[0030]
【The invention's effect】
As is clear from the above description, in the present invention, since steel is used as a base, there is no drying shrinkage due to aging deterioration, and the problem of chemical damage in terms of white ant damage and corrosion countermeasures can be solved.
[0031]
Further, in the present invention, the connecting hardware is arranged in a state of being sandwiched between a pair of channel steels having a line-symmetric cross section, and the upper bolt and the anchor member are always located at the center of the steel base. ing. That is, since the load is supported at the center of the steel base, no eccentric load is generated.
[0032]
Furthermore, in the present invention, the steel plate and spacer of the bolted steel plate function as a reinforcing material against the compressive force applied to the steel base, and the grooved steel flange is not subjected to processing such as opening or welding. Therefore, the proof stress is greatly improved compared with the steel base of the prior art.
[0033]
Since the steel base of the present invention can be assembled by fastener joining, it is not necessary to weld upper bolts, anchor members, or the like to the channel steel at the construction site. In addition, since the fastener attaching portion is on the side surface of the steel base and the operator does not need to attach the fastener in an unreasonable posture, the fastener attaching operation is very easy and the work efficiency can be improved.
[0034]
In addition, since the steel base of the present invention has a pair of groove steels and connecting hardware fasteners joined together, the steel bases are integrated even when the house is renovated or when the steel base is partially damaged. It can be replaced one by one and has excellent maintainability. Furthermore, since the steel base can be easily dismantled when demolishing a house, the steel material is excellent in recyclability.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the structure of a steel base in a first embodiment of the present invention.
FIG. 2 is a side view of the structure of the steel base in the first embodiment of the present invention.
3 is a cross-sectional view taken along the line AA in FIG.
FIG. 4A is a bolted steel plate having both an upper bolt at the upper end of the steel plate and an anchor member at the lower end of the steel plate, and FIG. 4B is a steel plate with bolt having an anchor member attached to the lower end of the steel plate; C) is a bolted steel plate with an upper bolt attached to the upper end of the steel plate.
FIG. 5 is a side view of the structure of a steel base in a second embodiment of the present invention.
FIG. 6 is a view showing a conventional wooden base.
FIG. 7 is a view showing a conventional example of a steel base using H-shaped steel.
FIG. 8 is a view showing a conventional example of a steel base using box-shaped steel.
FIG. 9 is a view showing a conventional example of a steel base using only one channel steel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Steel base 2 Channel steel 2a Web part 3 Connecting metal piece 4 Steel plate 4a with bolt Steel plate 4b Upper bolt 4c Anchor member 4d Fastener insertion hole 4e Long hole (fastener insertion hole)
5 Spacer 6 Fastener 7 Base 8 Wall frame 8a Opening 8b Hold down hardware 8c Lower frame 9 Nut 10 Anchor bolt 21 Wooden base 22 Foundation 23 Wall frame 24 Bolt joint hole 25 Upper bolt 26 Anchor bolt 27 Steel base (H Shape steel)
28 Steel base (box shape steel)
29 Bolt hole 30 Opening 31 Bonding hardware 32 Steel base (channel steel)
33 Reinforcement hardware WH Eccentricity between H-shaped steel web and bolt mounting point on flange

Claims (2)

断面が線対称形状である一対の溝形鋼が、互いのウェブ部が背中合わせで起立してなるように基礎の上に配置されており、前記溝形鋼のウェブ部に挟まれた状態で連結金物が固定され、前記連結金物が、ファスナー挿通孔を開孔した鋼板の上端に上部ボルトまたは前記鋼板の下端にアンカー部材を取り付けたボルト付鋼板であることを特徴とする鋼製土台の構造。A pair of channel steels having a line-symmetric cross section are arranged on the foundation so that the web portions stand up back to back, and are connected in a state sandwiched between the web portions of the channel steels. gold object is fixed, the connecting hardware is of steel foundation, characterized in that the fastener insertion hole to the upper end of the opening the steel is bolted steel plates fitted with anchoring members to the lower end of the upper bolt or the steel sheet structure . 前記溝形鋼のウェブ部と前記連結金物とを貫通するボルト等のファスナーにより、前記連結金物が固定されていることを特徴とする請求項1記載の鋼製土台の構造。Wherein the fastener such as a bolt passing through the said connection gold equivalent to the web portion of the channel steel, structural steel foundation according to claim 1, wherein the connecting gold product is characterized in that it is fixed.
JP2001068245A 2001-03-12 2001-03-12 Steel foundation structure using channel steel Expired - Fee Related JP4551010B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012225133A (en) * 2011-04-15 2012-11-15 Denro Corp Steel bedsill using channel steel
CN103758280A (en) * 2013-12-27 2014-04-30 中国石油天然气第六建设公司 H-shaped steel, manufacturing method thereof, steel structure and assembly method thereof

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Publication number Priority date Publication date Assignee Title
JP6181000B2 (en) * 2014-06-11 2017-08-16 メークス株式会社 Foundation structure of building with steel frame and its construction method

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Publication number Priority date Publication date Assignee Title
JPH11166293A (en) * 1997-12-04 1999-06-22 Nkk Corp Composite beam

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11166293A (en) * 1997-12-04 1999-06-22 Nkk Corp Composite beam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012225133A (en) * 2011-04-15 2012-11-15 Denro Corp Steel bedsill using channel steel
CN103758280A (en) * 2013-12-27 2014-04-30 中国石油天然气第六建设公司 H-shaped steel, manufacturing method thereof, steel structure and assembly method thereof
CN103758280B (en) * 2013-12-27 2017-07-11 中国石油天然气第六建设公司 H profile steel and its manufacture method, steel construction and its assemble method

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