JP2011038374A - Composite structure of building - Google Patents

Composite structure of building Download PDF

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JP2011038374A
JP2011038374A JP2009189284A JP2009189284A JP2011038374A JP 2011038374 A JP2011038374 A JP 2011038374A JP 2009189284 A JP2009189284 A JP 2009189284A JP 2009189284 A JP2009189284 A JP 2009189284A JP 2011038374 A JP2011038374 A JP 2011038374A
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steel
composite
concrete
brace
column
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JP5495012B2 (en
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Takayuki Nishitani
隆之 西谷
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Construction Co Ltd
Shimizu Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To make a composite structure between a reinforced concrete structure and a steel-framed structure widely applicable to buildings of varying sizes and forms. <P>SOLUTION: A column is constituted by a reinforced concrete column 1, and a beam is constituted by a compound beam 2 which is formed by covering the end of a steel-framed beam 2a with covering concrete 2b of reinforced concrete. A steel-framed brace 3 is constructed between the upper-and-lower compound beams, and the end of the steel-framed brace is joined to the steel-framed beam of the compound beam. The covering concrete covering the end of the compound beam is made precast concrete, and prestress is introduced to the connection between the covering concrete at the end of the compound beam and the column. Then vibration control damper is incorporated into the steel-framed brace. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は建物の構造に係わり、特に鉄筋コンクリート造（ＲＣ造）と鉄骨造（Ｓ造）との複合化による複合構造に関する。   The present invention relates to a structure of a building, and more particularly to a composite structure obtained by combining a reinforced concrete structure (RC structure) and a steel structure (S structure).

この種の複合構造としてたとえば特許文献１や特許文献２に示されるものが公知である。これは、柱を鉄筋コンクリート造によるＲＣ柱とし、梁を中央鉄骨部と端部鉄筋コンクリート部とによる複合構造の梁とするものであって、ＲＣ造とＳ造の双方の利点を併せもつことから、たとえば物販施設や物量施設等の中低層程度の建物の構造形式として普及する気運にある。   As this type of composite structure, for example, those shown in Patent Document 1 and Patent Document 2 are known. This is an RC column made of reinforced concrete, and a beam made of a composite structure consisting of a central steel frame and end reinforced concrete, and has the advantages of both RC and S. For example, it is in the mood to spread as a structural form of medium- and low-rise buildings such as product sales facilities and quantity facilities.

特公平４−３８８５４号公報Japanese Examined Patent Publication No. 4-38854 特開２００６−１４４５３５号公報JP 2006-144535 A

近年、この種の複合構造を中低層程度の建物のみならず高層ないし超高層の建物にも適用したいという要請があり、そのため上記従来の複合構造をさらに発展させて様々な規模や形態の建物に広く適用可能な構造の開発が望まれている。   In recent years, there has been a demand to apply this type of composite structure not only to medium- and low-rise buildings, but also to high-rise or super-high-rise buildings. Therefore, the conventional composite structure has been further developed into buildings of various sizes and forms. Development of a structure that can be widely applied is desired.

上記事情に鑑み、本発明は鉄筋コンクリート造と鉄骨造とによる建物の複合構造であって、柱が鉄筋コンクリート柱からなり、梁が鉄骨梁の端部を鉄筋コンクリート造の被覆コンクリートにより被覆した複合梁からなり、上下の複合梁の間に鉄骨ブレースが架設され、該鉄骨ブレースの端部を前記複合梁における鉄骨梁に対して接合してなることを特徴とする。   In view of the above circumstances, the present invention is a composite structure of a reinforced concrete structure and a steel structure, wherein the column is composed of a reinforced concrete column, and the beam is composed of a composite beam in which the end of the steel beam is covered with reinforced concrete coated concrete. A steel brace is constructed between the upper and lower composite beams, and an end of the steel brace is joined to the steel beam in the composite beam.

本発明においては、前記複合梁の端部を被覆する被覆コンクリートをプレキャストコンクリートとすることが好ましい。また、前記複合梁の端部の被覆コンクリートと前記柱との接合部にプレストレスを導入することが好ましい。さらに、前記鉄骨ブレースに制震ダンパーを組み込むことも考えられる。   In this invention, it is preferable that the covering concrete which coat | covers the edge part of the said composite beam is precast concrete. Moreover, it is preferable to introduce a prestress in the junction part of the covering concrete of the edge part of the said composite beam, and the said column. Furthermore, it is also conceivable to incorporate a damping damper in the steel brace.

本発明の複合構造によれば、鉄筋コンクリート柱と、鉄骨梁の端部を被覆コンクリートで被覆した複合梁とによる複合構造を基本としてそれにさらに鉄骨ブレースを併用したので、ＲＣ造とＳ造の双方の利点を合わせ持つことはもとより、全体として優れた耐震性を有するものであり、高層ないし超高層建物をはじめとして様々な規模、形態の建物の構造として広く適用可能である。
特に、鉄骨ブレースを複合梁の要素である鉄骨梁に対して接合するので、通常の純鉄骨造の場合と同様に鉄骨ブレースを支障なく設置し得るものであり、ＲＣ造とＳ造との複合構造としたこととあいまって耐震性に優れる建物を合理的かつ効率的に施工することが可能である。 According to the composite structure of the present invention, both the RC structure and the S structure are used because the steel brace is further used in combination with the composite structure of the reinforced concrete column and the composite beam in which the end of the steel beam is covered with the covering concrete. In addition to having advantages, it has excellent earthquake resistance as a whole, and can be widely applied as structures of buildings of various scales and forms, including high-rise or super-high-rise buildings.
In particular, since the steel brace is joined to the steel beam that is the element of the composite beam, the steel brace can be installed without any trouble as in the case of a normal pure steel structure. Combined with the structure, it is possible to reasonably and efficiently construct a building with excellent earthquake resistance.

本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention.

図１に本発明の実施形態である複合構造を示す。これは、特許文献１や特許文献２に示される複合構造を基本としてそれに鉄骨ブレースを付加したことを主眼とする。   FIG. 1 shows a composite structure according to an embodiment of the present invention. The main purpose of this is to add a steel brace to the composite structure shown in Patent Document 1 and Patent Document 2.

すなわち、本実施形態の複合構造における柱は通常の鉄筋コンクリート造によるＲＣ柱１であり、梁は鉄骨梁２ａを主体としてその端部のみを鉄筋コンクリート造の被覆コンクリート２ｂにより被覆した複合梁２とされ、その複合梁２の端部がＲＣ柱１に接合されてラーメン架構を構成している。
以上の構成は特許文献１に示されている構造と実質的に同様であって、本発明の複合梁２の中間部および端部はそれぞれ特許文献１に示される梁における中央鉄骨部および鉄筋コンクリート部に相当するものである。 That is, the column in the composite structure of the present embodiment is an RC column 1 made of ordinary reinforced concrete, and the beam is a composite beam 2 in which a steel beam 2a is mainly used and only the end thereof is covered with reinforced concrete covered concrete 2b. The end of the composite beam 2 is joined to the RC column 1 to form a rigid frame.
The above configuration is substantially the same as the structure shown in Patent Document 1, and the intermediate part and the end part of the composite beam 2 of the present invention are the central steel part and the reinforced concrete part in the beam shown in Patent Document 1, respectively. It is equivalent to.

以上の基本構成に加えて、本発明においては上下の複合梁２の間に鉄骨ブレース３が架設されている。図示例では、各層の架構フレーム内に２本の鉄骨ブレース３がいわゆるＫ型配置されることにより、図１（ａ）に示すように上下の２層で４本の鉄骨ブレース３が全体としてＸ型配置された形態で設置されている。   In addition to the above basic configuration, a steel brace 3 is installed between the upper and lower composite beams 2 in the present invention. In the illustrated example, two steel braces 3 are arranged in a so-called K-shape in the frame of each layer, so that the four steel braces 3 in the two upper and lower layers as a whole as shown in FIG. It is installed in a mold-arranged form.

そして、鉄骨ブレース３の一端（図１（ａ）に示される２層のうちの下層側に設置されているものにあっては上端、上層側に設置されているものでは下端）は複合梁２の中央部の鉄骨梁２ａに対して接合され、その鉄骨ブレース３の他端（同、下層側に設置されているものにあっては下端、上層側に設置されているものでは上端）は、図１（ｂ）に示すように複合梁２の端部において鉄骨梁２ａに対して接合されている。   One end of the steel brace 3 (the upper end in the lower layer of the two layers shown in FIG. 1A and the lower end in the upper layer) is the composite beam 2. The other end of the steel brace 3 is connected to the steel beam 2a in the center (the lower end in the case where it is installed on the lower layer side, and the upper end in the case where it is installed on the upper layer side), As shown in FIG. 1B, the end of the composite beam 2 is joined to the steel beam 2a.

すなわち、鉄骨ブレース３の一端は通常の鉄骨造建物におけるＫ型ブレースの場合と同様に鉄骨梁２ａに対して取付板４を介してボルト締結することで支障なく接合できるので、本発明においてもそのようにしている。
一方、鉄骨ブレース３の他端は、通常の鉄骨造建物であれば柱梁接合部（仕口部）に対して接合するのであるが、本発明における柱梁接合部はＲＣ造と鉄骨鉄筋コンクリート造（ＳＲＣ造）との複合構造となっていてそこに鉄骨ブレース３を単にそのまま接合することは必ずしも容易ではないことから、本発明では複合梁２の端部において鉄骨梁２ａの端部に対して取付板４を溶接し、その取付板４の先端部を被覆コンクリート２ｂから突出せしめてそこに鉄骨ブレース３をボルト締結するようにしている。 That is, one end of the steel brace 3 can be joined without any trouble by bolting to the steel beam 2a via the mounting plate 4 in the same manner as in the case of a K-type brace in a normal steel building. I am doing so.
On the other hand, the other end of the steel brace 3 is joined to a column beam joint (joint part) in the case of a normal steel structure building, but the column beam joint in the present invention is an RC structure and a steel reinforced concrete structure. In the present invention, it is not always easy to simply join the steel brace 3 as it is to the end of the steel beam 2a at the end of the steel beam 2a. The mounting plate 4 is welded, the tip of the mounting plate 4 is projected from the covering concrete 2b, and the steel brace 3 is bolted thereto.

本実施形態の複合構造によれば、通常のＲＣ柱１と、鉄骨梁２ａの端部を被覆コンクリート２ｂで被覆した複合梁２とによる複合構造を基本として、それにさらに鉄骨ブレース３を併用したので、ＲＣ造とＳ造の双方の利点を合わせ持つもつことはもとより全体として優れた耐震性を有するものであり、高層ないし超高層建物をはじめとして様々な規模、形態の建物の構造として広く適用可能である。   According to the composite structure of the present embodiment, since the composite structure of the normal RC column 1 and the composite beam 2 in which the end portion of the steel beam 2a is covered with the covering concrete 2b is used as a basis, the steel brace 3 is further used together. In addition to having the advantages of both RC and S structures, it has excellent earthquake resistance as a whole, and can be widely applied as a structure of buildings of various scales and forms, including high-rise or super-high-rise buildings. It is.

特に、本発明では鉄骨ブレース３の両端部をいずれも複合梁２の要素である鉄骨梁２ａに対して接合するので、通常の純鉄骨造の場合と同様に鉄骨ブレース３を支障なく設置できるものであるし、ＲＣ造とＳ造との複合構造としたこととあいまって建物全体を合理的かつ効率的に施工することが可能である。   In particular, in the present invention, since both ends of the steel brace 3 are joined to the steel beam 2a which is an element of the composite beam 2, the steel brace 3 can be installed without any trouble as in the case of a normal pure steel structure. In addition, combined with the RC structure and the S structure, it is possible to construct the entire building reasonably and efficiently.

なお、本発明のように鉄骨ブレース３を鉄骨梁２ａの端部ではなく通常のように柱梁接合部に対して接合する場合には、ＲＣ造とＳＲＣ造との複合構造となっている柱梁接合部に対してさらに何らかの接合手段を設けることが不可欠であり、そのために柱梁接合部が徒に複雑化して特殊な納まりとならざるを得ないので好ましくなく、現実的ではない。
その点、本発明のように鉄骨ブレース３を柱梁接合部ではなく複合梁２の要素である鉄骨梁２ａの端部に対して接合することとすれば、実質的に純鉄骨造建物の場合と同様の手法で鉄骨ブレース３を支障なく接合することが可能である。換言すれば、本発明のような複合構造の架構に対してさらに鉄骨ブレース３を付加するようなことは、鉄骨ブレース３を通常のように柱梁接合部に対してではなく複合梁２における鉄骨梁２ａの端部に対して接合することではじめて実現し得たものであるといえる。 In the case where the steel brace 3 is joined to the column beam joint as usual instead of the end of the steel beam 2a as in the present invention, a column having a composite structure of RC structure and SRC structure. It is indispensable to provide some kind of joining means for the beam joint portion. For this reason, the column beam joint portion is complicated and becomes a special fit, which is not preferable and not practical.
In that respect, if the steel brace 3 is joined to the end of the steel beam 2a that is an element of the composite beam 2 instead of the column beam joint as in the present invention, it is substantially a case of a pure steel structure building. It is possible to join the steel brace 3 without hindrance by the same method. In other words, adding the steel brace 3 to the frame of the composite structure as in the present invention means that the steel brace 3 is not attached to the column beam joint portion as usual, but the steel frame in the composite beam 2. It can be said that this can only be realized by joining to the end of the beam 2a.

以上、本発明の基本的な実施形態について説明したが、以下に他の実施形態を示す。
複合梁２の端部の被覆コンクリート２ｂは現場打ちにより形成することでも良く、その場合にはＲＣ柱１の施工時にそれと同時に形成すれば良いが、被覆コンクリート２ｂをプレキャストコンクリートにより形成することも好適である。その場合には、鉄骨梁２ａの製作加工時にその端部に通常のプレキャストコンクリートの施工手法により被覆コンクリート２ｂを一体に組み付ければ良い。 Although the basic embodiment of the present invention has been described above, other embodiments will be described below.
The covering concrete 2b at the end of the composite beam 2 may be formed on site, and in that case, it may be formed simultaneously with the construction of the RC pillar 1, but it is also preferable to form the covering concrete 2b from precast concrete. It is. In that case, what is necessary is just to assemble | attach the covering concrete 2b integrally to the edge part at the time of manufacture processing of the steel beam 2a by the construction method of a normal precast concrete.

ＲＣ柱１に対する複合梁２の接合はたとえば特許文献２に示される接合構造、すなわち鉄骨梁のエンドプレートにアンカー筋を溶接してそれをＲＣ柱に定着することで行えば良いが、その接合部にプレストレスを導入することも好ましい。
すなわち、図１（ｂ）に示すように被覆コンクリート２ｂとＲＣ柱１との間に跨るようにＰＣ鋼材５を配設してそれを緊張し定着することにより、複合梁２からＲＣ柱１に対してより確実に力を伝達し得て架構全体の曲げ耐力やせん断耐力を向上させることができる。なお、図１（ｂ）においては、ＲＣ柱１および被覆コンクリート２ｂに配筋されている鉄筋の図示は省略している。 The composite beam 2 can be joined to the RC column 1 by, for example, a joint structure shown in Patent Document 2, that is, by welding an anchor bar to an end plate of a steel beam and fixing it to the RC column. It is also preferable to introduce pre-stress into the.
That is, as shown in FIG. 1 (b), the PC steel material 5 is disposed so as to straddle between the covering concrete 2 b and the RC pillar 1, and it is tensioned and fixed, so that the composite beam 2 is changed to the RC pillar 1. On the other hand, the force can be more reliably transmitted, and the bending strength and shear strength of the entire frame can be improved. In addition, in FIG.1 (b), illustration of the reinforcing bar arranged by the RC pillar 1 and the covering concrete 2b is abbreviate | omitted.

鉄骨ブレース３の設置形態は上記実施形態のように各層でＫ型配置、２層でＸ型配置とすることに限らず任意であり、所望の補剛性能が得られるように所望位置に所望形態で配置すれば良い。   The installation form of the steel brace 3 is not limited to the K-type arrangement in each layer and the X-type arrangement in two layers as in the above-described embodiment, and is optional, and a desired form at a desired position so as to obtain a desired supplementary rigidity ability. Should be arranged.

鉄骨ブレース３としては単なる鉄骨材を用いることで充分であってその場合においても充分な補剛効果が得られるが、鉄骨ブレース３に制震ダンパーを組み込むことで所望の制震効果を得ることもできる。その場合、制震ブレースとしては鋼材によるブレースタイプのもの、たとえば鋼材の塑性変形を利用する周知のブレースダンパーや、帯鋼板の間に粘弾性体を積層した形態の周知の粘弾性ダンパー等が好適に採用可能である。
鉄骨ブレース３にそのような制震ダンパーを組み込むことにより、あるいは制震ダンパーとしてブレースの形態のものを用いる場合には鉄骨ブレース自体が制震ダンパーとしても機能することにより、従来においては全体的に鉄骨造とするしかなかった超高層建物の構造としても本発明の複合構造を支障なく適用することが可能である。 As the steel brace 3, it is sufficient to use a simple steel frame material, and even in that case, a sufficient stiffening effect can be obtained. However, a desired damping effect can be obtained by incorporating a damping damper into the steel brace 3. it can. In that case, as the damping brace, a brace type of steel material, for example, a well-known brace damper using plastic deformation of steel material or a well-known viscoelastic damper in a form in which a viscoelastic body is laminated between strips is suitable Can be adopted.
By incorporating such a damping damper into the steel brace 3, or when using a brace in the form of a brace as the damping damper, the steel brace itself also functions as a damping damper. It is possible to apply the composite structure of the present invention without any trouble as a structure of a super high-rise building that had to be made of steel.

１ 鉄筋コンクリート柱（ＲＣ柱）
２ 複合梁
２ａ 鉄骨梁
２ｂ 被覆コンクリート
３ 鉄骨ブレース
４ 取付板
５ ＰＣ鋼材 1 Reinforced concrete columns (RC columns)
2 Composite Beam 2a Steel Beam 2b Coated Concrete 3 Steel Brace 4 Mounting Plate 5 PC Steel

Claims (4)

鉄筋コンクリート造と鉄骨造とによる建物の複合構造であって、
柱が鉄筋コンクリート柱からなり、梁が鉄骨梁の端部を鉄筋コンクリート造の被覆コンクリートにより被覆した複合梁からなり、
上下の複合梁の間に鉄骨ブレースが架設され、該鉄骨ブレースの端部を前記複合梁における鉄骨梁に対して接合してなることを特徴とする建物の複合構造。 It is a composite structure of a building with reinforced concrete structure and steel structure,
The column is a reinforced concrete column, the beam is a composite beam in which the end of the steel beam is covered with reinforced concrete covered concrete,
A composite structure of a building, wherein a steel brace is installed between upper and lower composite beams, and an end of the steel brace is joined to the steel beam in the composite beam. 請求項１記載の建物の複合構造であって、
前記複合梁の端部を被覆する被覆コンクリートがプレキャストコンクリートからなることを特徴とする建物の複合構造。 A composite structure of a building according to claim 1,
A composite structure of a building, wherein the covering concrete covering the end portion of the composite beam is made of precast concrete. 請求項１または２記載の建物の複合構造であって、
前記複合梁の端部の被覆コンクリートと前記柱との接合部にプレストレスを導入したことを特徴とする建物の複合構造。 A composite structure of a building according to claim 1 or 2,
A composite structure of a building, wherein prestress is introduced into a joint portion between the covering concrete at the end of the composite beam and the column. 請求項１，２または３記載の建物の複合構造であって、
前記鉄骨ブレースに制震ダンパーを組み込んだことを特徴とする建物の複合構造。 A composite structure of a building according to claim 1, 2 or 3,
A composite structure of a building, wherein a damping damper is incorporated in the steel brace.
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CN102587531A (en) * 2012-03-02 2012-07-18 北京建筑工程学院 Swinging buckling restrained brace and frame structure system and construction method thereof
CN102864840A (en) * 2012-10-15 2013-01-09 江苏科技大学 Pre-stressed steel frame for exerting pre-stress by support displacement method and fabrication method of pre-stressed steel frame
CN112609823A (en) * 2020-12-03 2021-04-06 长安大学 Steel frame structure internally filled with energy-consuming truss and installation method thereof

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JPH0673203U (en) * 1993-03-30 1994-10-11 株式会社間組 Beam-column joint structure
JP2005030151A (en) * 2003-07-10 2005-02-03 Sumitomo Mitsui Construction Co Ltd Skeleton structure of building
JP2005179981A (en) * 2003-12-18 2005-07-07 Shimizu Corp Earthquake control construction of structure

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JPH0673203U (en) * 1993-03-30 1994-10-11 株式会社間組 Beam-column joint structure
JP2005030151A (en) * 2003-07-10 2005-02-03 Sumitomo Mitsui Construction Co Ltd Skeleton structure of building
JP2005179981A (en) * 2003-12-18 2005-07-07 Shimizu Corp Earthquake control construction of structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587531A (en) * 2012-03-02 2012-07-18 北京建筑工程学院 Swinging buckling restrained brace and frame structure system and construction method thereof
CN102864840A (en) * 2012-10-15 2013-01-09 江苏科技大学 Pre-stressed steel frame for exerting pre-stress by support displacement method and fabrication method of pre-stressed steel frame
CN102864840B (en) * 2012-10-15 2014-07-02 江苏科技大学 Pre-stressed steel frame for exerting pre-stress by support displacement method and fabrication method of pre-stressed steel frame
CN112609823A (en) * 2020-12-03 2021-04-06 长安大学 Steel frame structure internally filled with energy-consuming truss and installation method thereof

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