JP3650097B2 - Foundation for steel columns in buildings - Google Patents

Foundation for steel columns in buildings Download PDF

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Publication number
JP3650097B2
JP3650097B2 JP2002329668A JP2002329668A JP3650097B2 JP 3650097 B2 JP3650097 B2 JP 3650097B2 JP 2002329668 A JP2002329668 A JP 2002329668A JP 2002329668 A JP2002329668 A JP 2002329668A JP 3650097 B2 JP3650097 B2 JP 3650097B2
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JP
Japan
Prior art keywords
column
steel
foundation
horizontal
steel frame
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP2002329668A
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Japanese (ja)
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JP2004162381A (en
Inventor
明 今福
和弘 前田
Original Assignee
株式会社 スチールハウス九州
有限会社 大南圧送工業
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to JP2002329668A priority Critical patent/JP3650097B2/en
Publication of JP2004162381A publication Critical patent/JP2004162381A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、ビルやマンションなどの建造物の鉄骨柱の基礎に関するものである。
【0002】
【従来の技術】
図6は、従来の建造物の鉄骨柱の基礎の断面図である。1はコンクリート基礎であり、地中にコンクリート打ちして形成されている。GLは地面である。コンクリート基礎1中には鉄筋2が配筋されている。
【0003】
コンクリート基礎1の上面にはH型鋼3が配設されている。H型鋼3の下部材(下部フランジ)3aはボルト4によりコンクリート基礎1上に固定されている。5は鉄骨柱(以下、「コラム」という)であり、フランジ状に突出するその下端部6をH型鋼3の水平な上部材(上部フランジ)3b上に接地させ、下端部6と上部材3bをボルト7およびナット8により結合してH型鋼3上に立設されている。コラム5は、ビルやマンションなどの建造物の支柱となるものである。
【0004】
【発明が解決しようとする課題】
しかしながら上記従来の基礎構造では、コラム5はその下端部6をボルト7およびナット8によりH型鋼3の上部材3b上に結合し、これによりコラム5を支持・固定していたため、下端部6と上部材3bの結合部の強度が弱く、地震などにおいて、殊に水平方向の外力が作用すると、ボルト7やフランジ6が破断されるなどして破壊されやすかった。
【0005】
そこで本発明は、鉄骨柱(コラム)を強固に支持できる建造物の鉄骨柱の基礎を提供することを目的とする。
【0008】
【課題を解決するための手段】
本発明の建造物の鉄骨柱の基礎は、水平な鉄骨と、この水平な鉄骨の端部に結合して立設された第1の鉄骨柱と、前記水平な鉄骨上に立設された第2の鉄骨柱とを備えた建造物の鉄骨柱の基礎であって、前記第1の鉄骨柱の下端部を前記水平な鉄骨の下方まで延出させ、且つこの下端部に側方へ延出する部材を結合し、前記第1の鉄骨柱及び前記第2の鉄骨柱の下端部と前記水平な鉄骨をコンクリート基礎中に埋設した。
【0009】
本発明によれば、水平な鉄骨及び第1の鉄骨柱(コラム)と第2の鉄骨柱の下端部はコンクリート基礎中に埋め込まれるので、コラムを強固に支持することができ、殊に地震時などにおける水平方向の外力に十分に対抗することができる。
【0010】
【発明の実施の形態】
(実施の形態1)
図1は本発明の実施の形態1におけるコラムとH型鋼の斜視図、図2は同建造物の鉄骨柱の基礎の断面図である。
【0011】
図1において、コラム10は中空四角柱であり、その下端部には水平方向へ突出する板状の延出部材11が溶接手段などにより結合されている。延出部材11には孔部12が複数個形成されている。鉄骨としてのH型鋼13は下部材(下部フランジ)13a、上部材(上部フランジ)13b、中部材13cから成っており、下部材13aと上部材13bには孔部14、15が複数個形成されている。
【0012】
延出部材11は、孔部12を孔部15に合致させて上部材13b上に設置され、孔部12、15にボルト16を挿入し、ボルト16の下端部からナット17を螺入することにより、延出部材11と上部材13bは結合される。すなわち、ボルト16とナット17はコラム10とH型鋼13の結合手段となっている。結合手段としては、溶接手段なども適用できる。下部材13aの孔部14には、棒状のアンカー18が垂直に挿入される。
【0013】
図2は、コラム10をH型鋼13上に立設して構築した基礎を示している。この基礎は、地中にH型鋼13を水平に配設し、その下部材13aの孔部14にアンカー18を挿入して取り付け、上部材13b上にコラム10を立設して上述のように延出部材11と上部材13bをボルト16、ナット17により結合する。そして地中に鉄筋20を配筋し、鉄骨13、コラム10の下端部、アンカー18、鉄筋20を含むエリアにコンクリート打ちしてコンクリート基礎21を構築する。
【0014】
図2において、コラム10の下端部は、H型鋼13やアンカー18とともにコンクリート基礎21中に埋設されているので、延出部材11と上部材13bの結合強度はきわめて大きく、地震などの外力が作用してもコラム10は強固な支持状態が維持される。
【0015】
(実施の形態2)
図3は本発明の実施の形態2における建造物の鉄骨柱の基礎の断面図である。本実施の形態2の鉄骨25は、中空四角柱26に下部材(下部フランジ)27と上部材(上部フランジ)28を結合して成っている。本実施の形態2では、下部材27と上部材28は溶接により中空四角柱26の下面と上面に結合されているが、ボルト、ナットなどの結合手段により結合してもよい。
【0016】
下部材27の孔部29にはアンカー18が垂直に挿入して取り付けられる。また上部材28上にコラム10が立設され、実施の形態1と同様に、両者はボルト16、ナット17などにより結合される。上記以外の他の構成は、実施の形態1と同じである。この実施の形態2も、コラム10の下端部、鉄骨25、アンカー18等はコンクリート基礎21中に埋設されているので、コラム10の下端部と上部材28の結合強度はきわめて大きく、地震などの外力が作用してもコラム10は強固な支持状態が維持される。
【0017】
(実施の形態3)
図4は本発明の実施の形態3におけるコンクリート基礎中に構築される鉄骨構造物の斜視図、図5は同建造物の鉄骨柱の基礎の断面図である。
【0018】
30はH型鋼から成る水平な鉄骨であり、その端部には第1のコラム31が垂直に立設されている。第1のコラム31は中空四角柱であり、ボルト、ナットや溶接手段などにより水平な鉄骨30の端部に結合されている。第1のコラム31の下端部は水平な鉄骨30の下方まで延出しており、この下端部には鉄板などから成る水平に側方へ延出する板状の部材32が溶接手段などにより結合されている。部材32は第1のコラム31の側方へフランジ状に延出しており、この延出部に複数個の孔部33が開口されている。各孔部33にはアンカー34が垂直に挿入される。
【0019】
水平な鉄骨30の中間部上面には第2のコラム35が垂直に立設されている。第2のコラム35も中空四角柱であり、その下端部にはフランジ36が結合されている。フランジ36はボルト37とナット38や溶接手段などの結合手段により水平な鉄骨30上に結合されている。第2のコラム35の直下における水平な鉄骨30の上部材と下部材の間には、鉄板などから成る補強部材39が設けられている。40は三角形板状の補強部材であり、第1のコラム31及び第2のコラム35の側面と水平な鉄骨30の上面に接合溶接手段やボルトナットなどの結合手段によりして結合されている。
【0020】
図5に示すように、水平な鉄骨30及び第1のコラム31と第2のコラム35の下端部、アンカー34等はコンクリート基礎41中に埋設されるので、地震などの外力に対しても、十分な強度とコラム31、35の支持状態を確保できる。図5において、コンクリート基礎41中の鉄筋は省略している。
【0021】
【発明の効果】
以上説明したように本発明によれば、水平な鉄骨及び第1の鉄骨柱(コラム)と第2の鉄骨柱の下端部はコンクリート基礎中に埋め込まれているので、コラムを強固に支持することができ、殊に地震時などにおける水平方向の外力に十分に対抗することができる。またアンカーを設けることにより、鉄骨柱をより強固に固定できる。
【図面の簡単な説明】
【図1】本発明の実施の形態1におけるコラムとH型鋼の斜視図
【図2】本発明の実施の形態1における建造物の鉄骨柱の基礎の断面図
【図3】本発明の実施の形態2における建造物の鉄骨柱の基礎の断面図
【図4】本発明の実施の形態3におけるコンクリート基礎中に構築される鉄骨構造の斜視図
【図5】本発明の実施の形態3における建造物の鉄骨柱の基礎の断面図
【図6】従来の建造物の鉄骨柱の基礎の断面図
【符号の説明】
10 コラム(鉄骨柱)
11 延出部材
13,25 鉄骨(H型鋼)
13a,27 下部材
13b,28 上部材
18,34 アンカー
21,41 コンクリート基礎
30 水平な鉄骨
31 第1のコラム
32 側方へ延出する部材
35 第2のコラム
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the foundation of the steel columns of the building, such as buildings and condominiums.
[0002]
[Prior art]
FIG. 6 is a sectional view of a foundation of a steel column of a conventional building. 1 is a concrete foundation, which is formed by placing concrete in the ground. GL is the ground. A reinforcing bar 2 is arranged in the concrete foundation 1.
[0003]
An H-shaped steel 3 is disposed on the upper surface of the concrete foundation 1. A lower member (lower flange) 3 a of the H-shaped steel 3 is fixed on the concrete foundation 1 with bolts 4. Reference numeral 5 denotes a steel column (hereinafter referred to as “column”). The lower end 6 protruding in a flange shape is grounded on the horizontal upper member (upper flange) 3b of the H-shaped steel 3, and the lower end 6 and the upper member 3b are grounded. Are connected by bolts 7 and nuts 8 and are erected on the H-shaped steel 3. Column 5 is a pillar of a building such as a building or a condominium.
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional basic structure, the column 5 has its lower end 6 connected to the upper member 3b of the H-shaped steel 3 by bolts 7 and nuts 8, thereby supporting and fixing the column 5. The strength of the connecting portion of the upper member 3b is weak, and in the event of an earthquake or the like, especially when an external force in the horizontal direction is applied, the bolt 7 and the flange 6 are easily broken and broken.
[0005]
Accordingly, the present invention aims at providing a basis for steel columns of buildings steel columns (the column) can be firmly supported.
[0008]
[Means for Solving the Problems]
The foundation of the steel column of the building of the present invention is a horizontal steel frame, a first steel column that is erected and connected to an end of the horizontal steel frame, and a first steel column that is erected on the horizontal steel frame. A steel column foundation of a building comprising two steel columns, wherein a lower end portion of the first steel column extends to a position below the horizontal steel frame and extends laterally to the lower end portion the member for binding to said horizontal steel the lower end of the first steel columns and the second steel columns were set embedded in the concrete foundation.
[0009]
According to the present invention, the horizontal steel and the first steel column (column) and the lower end of the second steel column are embedded in the concrete foundation, so that the column can be supported firmly, especially during an earthquake. It is possible to sufficiently counter the external force in the horizontal direction.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
FIG. 1 is a perspective view of a column and H-shaped steel in Embodiment 1 of the present invention, and FIG. 2 is a sectional view of the foundation of a steel column of the same building.
[0011]
In FIG. 1, a column 10 is a hollow quadrangular column, and a plate-like extending member 11 protruding in the horizontal direction is coupled to the lower end portion thereof by welding means or the like. A plurality of holes 12 are formed in the extending member 11. The H-shaped steel 13 as a steel frame is composed of a lower member (lower flange) 13a, an upper member (upper flange) 13b, and an intermediate member 13c. A plurality of holes 14 and 15 are formed in the lower member 13a and the upper member 13b. ing.
[0012]
The extending member 11 is installed on the upper member 13 b with the hole portion 12 aligned with the hole portion 15, the bolt 16 is inserted into the hole portions 12, 15, and the nut 17 is screwed from the lower end portion of the bolt 16. Thus, the extending member 11 and the upper member 13b are coupled. That is, the bolt 16 and the nut 17 serve as a coupling means for the column 10 and the H-shaped steel 13. As the coupling means, welding means or the like can also be applied. A rod-shaped anchor 18 is vertically inserted into the hole 14 of the lower member 13a.
[0013]
FIG. 2 shows a foundation constructed by standing the column 10 on the H-shaped steel 13. In this foundation, the H-shaped steel 13 is horizontally arranged in the ground, the anchor 18 is inserted and attached to the hole 14 of the lower member 13a, and the column 10 is erected on the upper member 13b as described above. The extending member 11 and the upper member 13 b are coupled by a bolt 16 and a nut 17. Then, the reinforcing bars 20 are arranged in the ground, and the concrete foundation 21 is constructed by placing concrete in an area including the steel frame 13, the lower end of the column 10, the anchors 18, and the reinforcing bars 20.
[0014]
In FIG. 2, since the lower end of the column 10 is embedded in the concrete foundation 21 together with the H-shaped steel 13 and the anchor 18, the coupling strength between the extending member 11 and the upper member 13b is extremely high, and an external force such as an earthquake acts. Even so, the column 10 is maintained in a strong support state.
[0015]
(Embodiment 2)
FIG. 3 is a cross-sectional view of the foundation of a steel column of a building according to Embodiment 2 of the present invention. The steel frame 25 according to the second embodiment is formed by connecting a lower member (lower flange) 27 and an upper member (upper flange) 28 to a hollow rectangular column 26. In the second embodiment, the lower member 27 and the upper member 28 are coupled to the lower surface and the upper surface of the hollow rectangular column 26 by welding, but may be coupled by a coupling means such as a bolt or a nut.
[0016]
The anchor 18 is vertically inserted and attached to the hole 29 of the lower member 27. Further, the column 10 is erected on the upper member 28, and both are coupled by bolts 16, nuts 17 and the like as in the first embodiment. Other configurations other than the above are the same as those in the first embodiment. Also in the second embodiment, since the lower end portion of the column 10, the steel frame 25, the anchor 18 and the like are embedded in the concrete foundation 21, the coupling strength between the lower end portion of the column 10 and the upper member 28 is extremely high, and an earthquake, etc. Even if an external force is applied, the column 10 is maintained in a strong support state.
[0017]
(Embodiment 3)
FIG. 4 is a perspective view of a steel structure built in a concrete foundation according to Embodiment 3 of the present invention, and FIG. 5 is a cross-sectional view of the foundation of the steel column of the structure.
[0018]
Reference numeral 30 denotes a horizontal steel frame made of H-shaped steel, and a first column 31 is erected vertically at an end portion thereof. The first column 31 is a hollow rectangular column, and is coupled to the end of the horizontal steel frame 30 by bolts, nuts, welding means, or the like. The lower end portion of the first column 31 extends to the lower side of the horizontal steel frame 30, and a plate-like member 32 made of an iron plate or the like and extending sideways is coupled to the lower end portion by welding means or the like. ing. The member 32 extends in a flange shape to the side of the first column 31, and a plurality of holes 33 are opened in the extended portion. An anchor 34 is inserted vertically into each hole 33.
[0019]
A second column 35 is erected vertically on the upper surface of the intermediate portion of the horizontal steel frame 30. The second column 35 is also a hollow quadrangular column, and a flange 36 is coupled to the lower end portion thereof. The flange 36 is coupled to the horizontal steel frame 30 by coupling means such as bolts 37 and nuts 38 or welding means. A reinforcing member 39 made of an iron plate or the like is provided between an upper member and a lower member of the horizontal steel frame 30 immediately below the second column 35. Reference numeral 40 denotes a triangular plate-like reinforcing member, which is coupled to the side surfaces of the first column 31 and the second column 35 and the upper surface of the horizontal steel frame 30 by a coupling means such as a welding joint or a bolt and nut.
[0020]
As shown in FIG. 5, since the horizontal steel frame 30 and the lower ends of the first column 31 and the second column 35, the anchor 34, etc. are embedded in the concrete foundation 41, even against an external force such as an earthquake, Sufficient strength and a supporting state of the columns 31 and 35 can be secured. In FIG. 5, the reinforcing bars in the concrete foundation 41 are omitted.
[0021]
【The invention's effect】
As described above, according to the present invention, the horizontal steel frame and the first steel column (column) and the lower end of the second steel column are embedded in the concrete foundation, so that the column is firmly supported. In particular, it can sufficiently resist the external force in the horizontal direction during an earthquake. Moreover, the steel column can be more firmly fixed by providing the anchor.
[Brief description of the drawings]
FIG. 1 is a perspective view of a column and an H-shaped steel in Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the foundation of a steel column of a building in Embodiment 1 of the present invention. FIG. 4 is a perspective view of a steel structure built in a concrete foundation according to a third embodiment of the present invention. FIG. 5 is a construction according to a third embodiment of the present invention. Sectional view of the foundation of a steel column of the object [Fig. 6] Sectional view of the foundation of the steel column of a conventional building [Explanation of symbols]
10 Column (steel column)
11 Extension members 13, 25 Steel frame (H-shaped steel)
13a, 27 Lower member 13b, 28 Upper member 18, 34 Anchor 21, 41 Concrete foundation 30 Horizontal steel frame 31 First column 32 Member 35 extending sideways Second column

Claims (2)

水平な鉄骨と、この水平な鉄骨の端部に結合して立設された第1の鉄骨柱と、前記水平な鉄骨上に立設された第2の鉄骨柱とを備えた建造物の鉄骨柱の基礎であって、前記第1の鉄骨柱の下端部を前記水平な鉄骨の下方まで延出させ、且つこの下端部に側方へ延出する部材を結合し、前記第1の鉄骨柱及び前記第2の鉄骨柱の下端部と前記水平な鉄骨をコンクリート基礎中に埋設したことを特徴とする建造物の鉄骨柱の基礎。A steel frame of a building comprising a horizontal steel frame, a first steel column erected and coupled to an end of the horizontal steel frame, and a second steel column erected on the horizontal steel frame A first steel column that is a foundation of a column , wherein a lower end portion of the first steel column is extended to below the horizontal steel frame, and a member that extends laterally is coupled to the lower end portion; And the lower end part of the said 2nd steel column and the said horizontal steel frame were embed | buried in a concrete foundation, The foundation of the steel column of the structure characterized by the above-mentioned. 前記側方へ延出する部材に取り付けられて前記コンクリート基礎中に埋設されるアンカーを設けことを特徴とする請求項記載の建造物の鉄骨柱の基礎。Basis for steel column of claim 1 building, wherein the provision of the anchor to be embedded is attached to a member extending into the side towards in the concrete foundation.
JP2002329668A 2002-11-13 2002-11-13 Foundation for steel columns in buildings Expired - Fee Related JP3650097B2 (en)

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Application Number Priority Date Filing Date Title
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JP3650097B2 true JP3650097B2 (en) 2005-05-18

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