JP2007507629A - Shear coupling material using perforated steel plates and / or alternately torn steel plates - Google Patents

Shear coupling material using perforated steel plates and / or alternately torn steel plates Download PDF

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JP2007507629A
JP2007507629A JP2006532067A JP2006532067A JP2007507629A JP 2007507629 A JP2007507629 A JP 2007507629A JP 2006532067 A JP2006532067 A JP 2006532067A JP 2006532067 A JP2006532067 A JP 2006532067A JP 2007507629 A JP2007507629 A JP 2007507629A
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shear
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steel plates
connection material
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リ、キホン
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ビー．ビー．エム．コリア カンパニー リミテッド
リ、キホン
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs

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  • Civil Engineering (AREA)
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Abstract

【課題】本発明は、有孔鋼板および／または交互に引き裂かれた鋼板を用いたせん断連結材に関するものである。
【課題手段】一定の長さを有するＴ型鋼板において、フランジおよびウェブに複数の通孔を設けられるか、あるいはフランジは交互に引き裂かれ、ウェブには複数の通孔を形成されることを特徴とし、鋼材とコンクリート間に完全合成または部分合成の効果を期待することができ、異種材料間の荷重伝達機能を提供するとき、荷重抵抗能力および変形に対する抵抗能力が向上する効果がある。
【選択図】図１The present invention relates to a shear connecting material using a perforated steel plate and / or a steel plate which is alternately torn.
In a T-shaped steel plate having a certain length, a plurality of through holes are provided in the flange and the web, or the flanges are alternately torn and a plurality of through holes are formed in the web. The effect of complete synthesis or partial synthesis can be expected between steel and concrete, and when providing a load transmission function between different materials, there is an effect of improving load resistance capability and resistance to deformation.
[Selection] Figure 1

Description

本発明は鋼材とコンクリート間の連結材として使用されるせん断連結材に関し、特に有孔鋼板および／または交互に引き裂かれた鋼板を用いたせん断連結材に関するものである。   The present invention relates to a shear connection material used as a connection material between a steel material and concrete, and more particularly to a shear connection material using a perforated steel plate and / or an alternately torn steel plate.

建築、土木分野で使用される合成構造は、長スパン化、高荷重化につれて、純粋鋼構造のみでは剛性が不足し、所要鋼材が増大するため、質量の大きなコンクリートを活用して構成断面または部材の剛性を増大させ、荷重抵抗能力を向上させた構造形式である。   Synthetic structures used in the construction and civil engineering fields are made up of concrete with a large mass because the rigidity is insufficient and the required steel materials increase due to the increase in span and load. This is a structural form in which the rigidity of the load is increased and the load resistance capability is improved.

特に、合成構造で曲がり部材を具現する際、鋼材ビームとコンクリートスラブとの間にせん断連結材を取り付けて機械的な付着力（つまり、せん断抵抗）を発揮させて、水平せん断力に抵抗するようにする方法を提供する。   In particular, when embodying a curved member with a composite structure, a shear connection material is attached between the steel beam and the concrete slab to exert a mechanical adhesive force (that is, shear resistance) to resist horizontal shear force. Provide a way to

図５は合成ビームであって、Ｈ型鋼ビーム部材５１とコンクリートスラブ５２をスタッドコネクタ５３で一体化することで、曲げモーメントに抵抗するようにした部材である。かかるせん断連結材の有無によって大きく合成ビームと非合成ビームに分けられる。   FIG. 5 shows a composite beam, which is a member that resists bending moment by integrating a H-shaped steel beam member 51 and a concrete slab 52 with a stud connector 53. Depending on the presence / absence of such a shear coupling material, the beam is largely divided into a synthetic beam and a non-synthetic beam.

コンクリートスラブと鋼材ビームとの間にせん断連結材が取り付けられていない非合成ビームにおいて、曲げモーメントに対する変形状態および曲げ応力分布を図６ａ〜図６ｃに示す。この際、コンクリートと鋼材間の面摩擦力は無視し得る程度に小さいと仮定する。   FIGS. 6a to 6c show the deformation state and bending stress distribution with respect to the bending moment in the non-synthetic beam in which the shear connection material is not attached between the concrete slab and the steel beam. At this time, it is assumed that the surface friction force between the concrete and the steel material is negligibly small.

図示のように、コンクリートスラブ５２と鋼材ビーム５１はそれぞれの中立軸（Ｚｓ、Ｚｂ）を形成して曲げ挙動を行い、この際、鋼材面とコンクリート間で滑りが発生することが分かる。また、鋼材面とコンクリート間の接触面に揚圧力（ｆｕｐ）が生ずることが分かる。 As shown in the figure, the concrete slab 52 and the steel beam 51 form a neutral axis (Z s , Z b ) and perform bending behavior, and at this time, it can be seen that slip occurs between the steel surface and the concrete. Moreover, it turns out that a lifting pressure ( fup ) arises in the contact surface between a steel material surface and concrete.

コンクリートスラブと鋼材ビーム間で滑りが発生しないように、十分なせん断連結材を鋼材ビームの上部に取り付け、コンクリートスラブを合成させた合成ビームにおいて、作用曲げモーメントに対する変形状態および曲げ応力分布を図７ａ〜図７ｃに示す。   In order to prevent slippage between the concrete slab and the steel beam, a sufficient shear coupling material is attached to the upper part of the steel beam and the composite beam obtained by synthesizing the concrete slab shows the deformation state and the bending stress distribution with respect to the acting bending moment. To FIG. 7c.

このような断面の抵抗においては、面内せん断応力（水平せん断力、σｈ）と面外せん断力（垂直せん断力σｖ）の関係が現れる。すなわち、コンクリートと鋼材間の完全合成挙動を確保するためには、前記２種の抵抗性能を有するようにせん断連結材を構成しなければならないことが分かる。 In such cross-sectional resistance, a relationship between in-plane shear stress (horizontal shear force, σ h ) and out-of-plane shear force (vertical shear force σ v ) appears. That is, it can be understood that in order to ensure the complete composite behavior between the concrete and the steel material, the shear coupling material must be configured to have the two types of resistance performance.

一般に、建築、土木分野において、鋼材部材とコンクリート間の合成効果を期待する目的で、スタッドコネクタをせん断連結材として使用して異種材料間の面内せん断力を伝達するようにしている。   In general, in the field of architecture and civil engineering, stud connectors are used as shear connection materials to transmit in-plane shear forces between different materials in order to expect a composite effect between steel members and concrete.

このようなスタッドコネクタは、円形のヘッドと胴体が一体に形成された構成であって、現場または工場で作業するために、溶接設備のアークスタッド溶接機器が必要である。   Such a stud connector has a structure in which a circular head and a body are integrally formed, and an arc stud welding device of a welding facility is necessary for working in the field or a factory.

しかし、アークスタッド溶接を行おうとするときは、２２０Ｖ／３８０Ｖ（３相）電流が必要であり、定格電流３５０〜１０００ＫＡ以上を確保しなければならない。したがって、山間僻地または一般の小規模現場で前記のような定格電圧または定格電流を確保するには多くの問題がある。   However, when performing arc stud welding, 220V / 380V (three-phase) current is required, and a rated current of 350 to 1000 KA or more must be secured. Therefore, there are many problems in securing the rated voltage or rated current as described above in mountainous areas or general small-scale sites.

また、従来のスタッドコネクタは、ヘッドが小さいため、揚圧力に対して材料分離防止、定着効果などの面で十分な合成効果を発揮することができなく、しかも頻繁な振動または疲労荷重などによって定着効果が低減する可能性がある。   In addition, since the conventional stud connector has a small head, it cannot exhibit a sufficient composite effect in terms of preventing material separation and fixing effect against lifting pressure, and is fixed due to frequent vibration or fatigue load. The effect may be reduced.

本発明は前記のような従来技術の問題点に鑑みてなされたもので、施工性に優れ、完全合成または部分合成の効果を期待することができ、異種材料間の荷重伝達機能を提供するとき、荷重抵抗能力および変形に対する抵抗能力を向上させたせん断連結材を提供することをその目的とする。   The present invention has been made in view of the problems of the prior art as described above, and is excellent in workability, can be expected to have an effect of complete synthesis or partial synthesis, and provides a load transmission function between different materials. An object of the present invention is to provide a shear coupling material having improved load resistance capability and resistance to deformation.

特に、本発明の目的は、面内せん断応力と面外せん断応力に対する抵抗性能をほぼ同等に維持することができるせん断連結材を提供することにある。   In particular, an object of the present invention is to provide a shear linking material that can maintain resistance performance against in-plane shear stress and out-of-plane shear stress substantially equal.

前記のような本発明の目的は、一定の長さを有するＴ型鋼板において、フランジおよびウェブに複数の通孔が形成されたことを特徴とするせん断連結材によって達成される。   The object of the present invention as described above is achieved by a shear connection material characterized in that a plurality of through holes are formed in a flange and a web in a T-shaped steel plate having a certain length.

他の実施例として、一定の長さを有するＴ型鋼板において、フランジは交互に引き裂かれて形成された複数のフランジ片から構成され、ウェブには複数の通孔が形成されることを特徴とするせん断連結材が提供される。   As another embodiment, in a T-shaped steel plate having a certain length, the flange is composed of a plurality of flange pieces formed by alternately tearing, and the web is formed with a plurality of through holes. A shearing connection is provided.

さらに他の実施例として、一定の長さを有するＺ型鋼板において、上部フランジとウェブに複数の通孔が形成されることを特徴とするせん断連結材が提供される。   As still another embodiment, there is provided a shear connection material characterized in that, in a Z-shaped steel plate having a certain length, a plurality of through holes are formed in the upper flange and the web.

したがって、本発明によれば、鋼材との合成作用が一層増大して、コンクリートと鋼材間の分離現象が防止され、それによって、揚圧に対する抵抗およびせん断抵抗が増加する。   Therefore, according to the present invention, the synthesizing action with the steel material is further increased, and the separation phenomenon between the concrete and the steel material is prevented, thereby increasing the resistance against lifting and the shear resistance.

前述したように、本発明によれば、鋼材とコンクリート間の完全合成または部分合成効果を期待することができ、異種材料間の荷重伝達機能を提供するとき、荷重抵抗能力および変形に対する抵抗能力が向上する。   As described above, according to the present invention, it is possible to expect a complete synthesis or partial synthesis effect between steel and concrete, and when providing a load transmission function between different materials, load resistance capability and resistance capability against deformation are reduced. improves.

本発明を前述の好適な実施例に基づいて説明したが、本発明の要旨および範囲から逸脱せずに、多様な修正および変形が可能である。したがって、添付の特許請求範囲は本発明の要旨に属するどんな修正または変形も含むものである。   Although the present invention has been described with reference to the preferred embodiments described above, various modifications and variations can be made without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover any modifications or variations that fall within the spirit of the invention.

以下、本発明の好適な実施例を添付図面に基づいて詳細に説明する。
図１ａは本発明の第１実施例によるせん断連結材１を示すもので、図示のように、本発明の第１実施例によるせん断連結材１は、フランジ１０およびウェブ２０を有する一定の長さのＴ型鋼で構成され、フランジ１０とウェブ２０には所定の間隔で複数の通孔１２、２２が形成される。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1a shows a shear coupling member 1 according to a first embodiment of the present invention. As shown, the shear coupling member 1 according to the first embodiment of the present invention has a fixed length having a flange 10 and a web 20. The flange 10 and the web 20 are formed with a plurality of through holes 12 and 22 at a predetermined interval.

このような通孔１２、２２はコンクリートとの合成作用を増進させるためのもので、その形状は図１ａに示すように円形に形成することが製造上好ましいが、それに限定されず、四角形、三角形、菱形等の多様な形状を有することができる。そして、三角形、四角形、菱形等のように、通孔に角部が生ずる場合は、図１ｂに示すように、角部の応力集中によって疲労亀裂が発生する可能性があるため、ラウンド部１４が形成される。   Such through-holes 12 and 22 are for enhancing the composite action with concrete, and the shape is preferably formed in a circular shape as shown in FIG. 1a, but is not limited thereto. It can have various shapes such as rhombus. And when a corner | angular part arises in a through-hole like a triangle, a tetragon | quadrangle, a rhombus etc., as shown in FIG.1b, since the fatigue crack may generate | occur | produce by the stress concentration of a corner | angular part, the round part 14 is It is formed.

フランジ１０およびウェブ２０に形成された通孔１２、２２はコンクリートの連続性を確保するように設計され、水平、垂直せん断力に対してくさび作用により材料分離を防止することになる。また、通孔に補強筋を挿入することができるが、補強筋は垂直、水平せん断能力を向上させ、コンクリートの脆性挙動を軟性挙動に転換させる。   The through holes 12 and 22 formed in the flange 10 and the web 20 are designed to ensure the continuity of the concrete and prevent material separation by a wedge action against horizontal and vertical shear forces. In addition, reinforcing bars can be inserted into the through-holes, but the reinforcing bars improve the vertical and horizontal shearing capacity and convert the brittle behavior of concrete into a soft behavior.

一方、フランジは、フランジの下部コンクリートを拘束して、上方向への揚圧力に対して定着効果を提供し、材料の接触面間の分離現象を予防することができる。   On the other hand, the flange restrains the lower concrete of the flange, provides a fixing effect against the upward lifting pressure, and can prevent the separation phenomenon between the contact surfaces of the material.

図２ａおよび図２ｂは本発明の第２実施例によるせん断連結材２０を示すもので、ウェブ２０には複数の通孔２２が形成され、フランジ１０を構成するプレートは交互に引き裂かれた複数のフランジ片１６、１８で形成される。   2a and 2b show a shear connection member 20 according to a second embodiment of the present invention. A plurality of through holes 22 are formed in the web 20, and a plurality of plates constituting the flange 10 are alternately torn. The flange pieces 16 and 18 are formed.

この際、フランジ１０をこのように交互に引き裂く構成は、コンクリートの打ち込み後、フランジの下部にコンクリートが充填されない問題点を解決し、フランジの剛性を少し低減させることで、せん断抵抗の際、脆性破壊を防止し、全体的に軟性挙動を誘導する。   In this case, the configuration in which the flanges 10 are alternately torn in this way solves the problem that the concrete is not filled in the lower part of the flange after the concrete is driven in, and reduces the rigidity of the flanges a little so that the brittleness is reduced in the shear resistance. Prevents destruction and induces soft behavior overall.

また、引き裂かれたフランジ１０は、コンクリートのくさび作用によって、水平せん断に効果的に対応することができる。   Further, the torn flange 10 can effectively cope with horizontal shear by the wedge action of concrete.

ウェブ２０に形成される通孔２２は、第１実施例と同様に、多様な形状を有することができ、三角形、四角形、菱形等の通孔に角部が発生する場合、図２ｂに示すように、角部の応力集中によって疲労亀裂が発生する可能性があるため、ラウンド部１４が設けられる。   The through holes 22 formed in the web 20 can have various shapes as in the first embodiment, and when corners are generated in the through holes such as a triangle, a quadrangle, and a rhombus, as shown in FIG. 2b. Furthermore, since there is a possibility that fatigue cracks may occur due to stress concentration at the corners, the round part 14 is provided.

図３ａおよび図３ｂは本発明の第３実施例によるせん断連結材３を示すもので、一定の長さを有するＺ型鋼板において、上部フランジとウェブに複数の通孔が形成されたものである。この際、下部フランジ３０は、溶接作用を容易にして鋼材との付着を一層確実にするよう設計される。   3a and 3b show a shear connection member 3 according to a third embodiment of the present invention, in which a plurality of through holes are formed in an upper flange and a web in a Z-shaped steel plate having a certain length. . At this time, the lower flange 30 is designed to facilitate the welding operation and further ensure the adhesion with the steel material.

一方、本発明の前記のような実施例は、ウェブおよびフランジに複数の凸部および／または凹部（図示せず）を形成することで、コンクリートとの摩擦力を増大させることができる。   On the other hand, the above-mentioned embodiment of the present invention can increase the frictional force with concrete by forming a plurality of convex portions and / or concave portions (not shown) on the web and the flange.

また、図４に示すように、本発明によるせん断連結材１、２、３のウェブ２０が複数の屈曲部を有するように波形に形成されることで、ウェブ２０の谷部に満たされるコンクリートのポケット効果によって、亀裂が発生するとき、少数の大きな亀裂でなく、多数の小さな亀裂が発生するように誘導することができる。   Further, as shown in FIG. 4, the web 20 of the shear connection members 1, 2, and 3 according to the present invention is formed in a corrugated shape so as to have a plurality of bent portions, so Due to the pocket effect, when cracks occur, many small cracks can be induced instead of a few large cracks.

図１ａおよび図１ｂは本発明によるせん断連結材の第１実施例を示す斜視図である。1a and 1b are perspective views showing a first embodiment of a shearing connection material according to the present invention. 図２ａおよび図２ｂは本発明によるせん断連結材の第２実施例を示す斜視図である。2a and 2b are perspective views showing a second embodiment of the shear coupling material according to the present invention. 図３ａおよび図３ｂは本発明によるせん断連結材の第３実施例を示す斜視図である。3a and 3b are perspective views showing a third embodiment of the shear coupling material according to the present invention. 図４は第１実施例の変形例を示す斜視図である。FIG. 4 is a perspective view showing a modification of the first embodiment. 図５はＨ型鋼ビーム部材５１とコンクリートスラブ５２をスタッドコネクタ５３で一体化することで、曲げモーメントに抵抗するようにしたビーム部材合成ビームの部分切開斜視図である。FIG. 5 is a partially cut perspective view of a beam composite beam in which an H-shaped steel beam member 51 and a concrete slab 52 are integrated with a stud connector 53 so as to resist a bending moment. 図６ａ〜図６ｃはコンクリートスラブと鋼材ビーム間にせん断連結材が取り付けられていない非合成ビームにおいて、作用曲げモーメントに対する変形状態および曲げ応力分布である。FIGS. 6a to 6c show the deformation state and bending stress distribution with respect to the acting bending moment in a non-synthetic beam in which no shear connection is attached between the concrete slab and the steel beam. 図７ａ〜図７ｃはコンクリートスラブと鋼材ビーム間で滑りが発生しないように、十分なせん断連結材を鋼材ビームの上部に取り付け、コンクリートスラブを合成させた合成ビームにおいて、作用曲げモーメントに対する変形状態および曲げ応力分布である。FIGS. 7a to 7c show a deformation state with respect to an acting bending moment in a composite beam obtained by attaching a sufficient shear coupling material to the upper part of the steel beam and synthesizing the concrete slab so that no slip occurs between the concrete slab and the steel beam. Bending stress distribution.

Claims (12)

一定の長さを有するＴ型鋼板において、
フランジおよびウェブに複数の通孔が形成されることを特徴とするせん断連結材。 In a T-shaped steel plate having a certain length,
A shear connection material, wherein a plurality of through holes are formed in a flange and a web. 前記ウェブが複数の尾根部および谷部を有するように波形に形成されることを特徴とする、請求項１に記載のせん断連結材。   The shear connection material according to claim 1, wherein the web is formed in a corrugated shape so as to have a plurality of ridges and valleys. 前記フランジ部および前記ウェブには複数の凸部および／または凹部がさらに形成されることを特徴とする、請求項１に記載のせん断連結材。   The shear connection material according to claim 1, wherein a plurality of convex portions and / or concave portions are further formed on the flange portion and the web. 前記ウェブが複数の尾根部および谷部を有するように波形に形成されることを特徴とする、請求項３に記載のせん断連結材。   The shear connection material according to claim 3, wherein the web is formed in a corrugated shape so as to have a plurality of ridges and valleys. 一定の長さを有するＴ型鋼板において、
フランジは交互に引き裂かれて形成される複数のフランジ片で構成され、ウェブには複数の通孔が形成されることを特徴とするせん断連結材。 In a T-shaped steel plate having a certain length,
A shear coupling material, wherein the flange is composed of a plurality of flange pieces formed by alternately tearing, and a plurality of through holes are formed in the web. 前記ウェブが複数の尾根部および谷部を有するように波形に形成されることを特徴とする、請求項５に記載のせん断連結材。   The shear connection material according to claim 5, wherein the web is formed in a corrugated shape so as to have a plurality of ridges and valleys. 前記フランジ部および前記ウェブには複数の凸部および／または凹部がさらに形成されることを特徴とする、請求項５に記載のせん断連結材。   The shear connection material according to claim 5, wherein a plurality of convex portions and / or concave portions are further formed in the flange portion and the web. 前記ウェブが複数の尾根部および谷部を有するように波形に形成されることを特徴とする、請求項７に記載のせん断連結材。   The shear connection material according to claim 7, wherein the web is formed in a corrugated shape so as to have a plurality of ridges and valleys. 一定の長さを有するＺ型鋼板において、
上部フランジとウェブに複数の通孔が形成されることを特徴とするせん断連結材。 In a Z-shaped steel plate having a certain length,
A shear coupling material, wherein a plurality of through holes are formed in the upper flange and the web. 前記ウェブが複数の尾根部および谷部を有するように波形に形成されることを特徴とする、請求項９に記載のせん断連結材。   The shear connection material according to claim 9, wherein the web is formed in a corrugated shape so as to have a plurality of ridges and valleys. 前記フランジ部および前記ウェブには複数の凸部および／または凹部がさらに形成されることを特徴とする、請求項９に記載のせん断連結材。   The shear connection material according to claim 9, wherein the flange portion and the web are further formed with a plurality of convex portions and / or concave portions. 前記ウェブが複数の尾根部および谷部を有するように波形に形成されることを特徴とする、請求項１１に記載のせん断連結材。   The shear connection material according to claim 11, wherein the web is formed in a corrugated shape so as to have a plurality of ridges and valleys.
JP2006532067A 2003-10-01 2004-06-24 Shear coupling material using perforated steel plates and / or alternately torn steel plates Pending JP2007507629A (en)

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