JP2009197410A - Through-hole reinforcing structure for steel framed reinforced concrete structure - Google Patents

Through-hole reinforcing structure for steel framed reinforced concrete structure Download PDF

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JP2009197410A
JP2009197410A JP2008037608A JP2008037608A JP2009197410A JP 2009197410 A JP2009197410 A JP 2009197410A JP 2008037608 A JP2008037608 A JP 2008037608A JP 2008037608 A JP2008037608 A JP 2008037608A JP 2009197410 A JP2009197410 A JP 2009197410A
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hole
reinforced concrete
steel
reinforcing member
hole reinforcing
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JP5196644B2 (en
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Harukatsu Kadoya
治克 角屋
Takaaki Hirayama
貴章 平山
Manabu Murata
学 村田
Hideki Ikeda
秀樹 池田
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Kurimoto Ltd
Okabe Co Ltd
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Okabe Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a through-hole reinforcing structure for a steel framed reinforced concrete structure capable of improving work efficiency of the work for installing a sleeve for drilling hole and enhancing the effect of reinforcement for a through-hole further by a simple configuration. <P>SOLUTION: This through-hole reinforcing structure for the steel framed reinforced concrete structure is constituted by forming at least a part of external shape forming profile of outer sides of through-hole reinforcing members 11, 12 for reinforced concrete to protrude it outward in the radial direction of the through-hole 8 from the external shape forming profile of outer side of a through-hole reinforcing member 9 for steel frame and forming it to protrude outward in the radial direction of the through-hole 8 by crossing a conical fracture face formed by an inclination angle of about 45 degrees and sideways from a joint part of flange parts 5, 6 of steel frame 1 and a web 7 in order to increase degree of restraining for concrete 4 in a part (α) on an inner side surrounded by the flange parts 5, 6 of the steel frame 1, the web 7, and the through-hole reinforcing members 11, 12 for reinforced concrete and improve the reinforcing action for the through-hole 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、鉄骨鉄筋コンクリート構造の建築物において配管などのために形成される貫通孔に対する補強構造に関する。   The present invention relates to a reinforcing structure for a through hole formed for piping or the like in a steel reinforced concrete structure building.

この種の鉄骨鉄筋コンクリート構造用貫通孔補強構造においては、鋼管からなる開孔用のスリーブを鉄骨のウェブの部分に形成した貫通孔に挿通させ、その挿通部分においてスリーブをウェブ側に溶接するという形態のものが従来から知られている（特許文献１中の従来技術参照）。この従来技術の場合には、開孔用のスリーブをウェブ側へ溶接するため、溶接箇所が増えて作業性がよくないという問題があった。そこで、溶接箇所を少なくして作業性を向上すべく、鉄骨のウェブに設置される鉄骨用貫通孔補強部材に形成した貫通孔に対して紙管等からなる開孔用のスリーブを嵌合設置する形態のものや、前記鉄骨用貫通孔補強部材に位置決め用の係合部を形成し、その位置決め用係合部に対して両側から紙管等からなる別個の開孔用のスリーブをそれぞれ係合させた状態で嵌合設置する形態のものも開示されている（特許文献１）。さらに、鉄骨のウェブに形成される貫通孔を補強する鉄骨用貫通孔補強部材の貫通孔に短い筒状部材を挿通設置し、その筒状部材に対して両側から別個の鋼管をスライド可能に嵌合して、それらの鋼管の外側部の周囲を鉄筋コンクリート用貫通孔補強部材に形成した４個の内方への突出部に当接支持するように構成したものも開示されている（特許文献２）。しかしながら、これらの従来技術は、開孔用のスリーブの設置に伴う溶接箇所の低減など、スリーブ設置上の作業性を向上するという観点からの改良点はみられるものの、貫通孔に対するより効果的な補強作用の実現という観点では更なる改良の余地があった。
特開２００６−３４８６５１号公報 特開２００７−２５７８号公報 In this type of through-hole reinforcement structure for steel reinforced concrete structure, a form of opening a sleeve made of steel pipe through a through-hole formed in a steel web portion and welding the sleeve to the web side at the insertion portion Has been conventionally known (see the prior art in Patent Document 1). In the case of this prior art, since the opening sleeve is welded to the web side, there is a problem that the number of welded portions increases and workability is not good. Therefore, in order to improve the workability by reducing the number of welds, an opening sleeve made of a paper tube or the like is fitted and installed in the through hole formed in the through hole reinforcing member for the steel frame installed in the steel web. In this configuration, a positioning engagement portion is formed in the steel-steel through-hole reinforcing member, and a separate opening sleeve made of a paper tube or the like is engaged with the positioning engagement portion from both sides. The thing of the form fitted and installed in the combined state is also disclosed (patent document 1). Further, a short cylindrical member is inserted into the through hole of the steel through hole reinforcing member for reinforcing the through hole formed in the steel frame web, and separate steel pipes are slidably fitted to the cylindrical member from both sides. In addition, a configuration is also disclosed in which the periphery of the outer portion of the steel pipe is configured to abut on and support four inward protruding portions formed in the reinforced concrete through-hole reinforcing member (Patent Document 2). ). However, although these conventional techniques have improved points from the viewpoint of improving the workability in installing the sleeve, such as reduction of welded portions due to the installation of the sleeve for opening, more effective for the through hole. There was room for further improvement in terms of realizing the reinforcing action.
JP 2006-348651 A JP 2007-2578 A

本発明は、以上のような従来の技術的状況に鑑みて開発したものであり、簡単な構成によって、開孔用のスリーブ設置上の作業性に関する向上を図るとともに、貫通孔に対する補強効果に関しても、更なる改良を加えた鉄骨鉄筋コンクリート構造用貫通孔補強構造を提供することを目的とするものである。   The present invention has been developed in view of the above-described conventional technical situation. With a simple configuration, the present invention aims to improve workability in installing a sleeve for opening and also relates to a reinforcing effect for a through hole. An object of the present invention is to provide a through-hole reinforcing structure for a steel reinforced concrete structure with further improvements.

本発明では、前記課題を解決するため、鉄骨のウェブに形成される貫通孔を補強する鉄骨用貫通孔補強部材と、その鉄骨用貫通孔補強部材の側方に設置され、鉄筋コンクリート構造物に形成される貫通孔を補強する鉄筋コンクリート用貫通孔補強部材とを備え、それらの鉄骨用貫通孔補強部材と鉄筋コンクリート用貫通孔補強部材とを貫通するように開孔用のスリーブを設置する鉄骨鉄筋コンクリート構造用貫通孔補強構造であって、前記鉄筋コンクリート用貫通孔補強部材の外形、すなわちその鉄筋コンクリート用貫通孔補強部材の外側の輪郭を形成する外形の少なくとも一部は、前記鉄骨用貫通孔補強部材の外形、すなわちその鉄骨用貫通孔補強部材の外側の輪郭を形成する外形より前記貫通孔の半径方向外方へ突出するように形成するとともに、かつ前記鉄骨のフランジ部とウェブとの接合部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面を越えて前記貫通孔の半径方向外方へ突出するように形成することにより、後述の実施例の項でも詳述するように、前記鉄骨のフランジ部とウェブと鉄筋コンクリート用貫通孔補強部材とによって囲まれる内側のコンクリートに対する拘束度合を高めて前記貫通孔に対する補強作用を更に改良するという技術手段を採用した。   In the present invention, in order to solve the above-mentioned problem, a through-hole reinforcing member for steel that reinforces a through-hole formed in a steel web, and a side wall of the through-hole reinforcing member for steel are installed to form a reinforced concrete structure. Steel reinforced concrete structure comprising a through-hole reinforcing member for reinforced concrete that reinforces a through-hole to be installed, and an opening sleeve is installed so as to pass through the through-hole reinforcing member for steel frame and the through-hole reinforcing member for reinforced concrete It is a through-hole reinforcing structure, and the outer shape of the through-hole reinforcing member for reinforced concrete, that is, at least part of the outer shape forming the outer contour of the through-hole reinforcing member for reinforced concrete is the outer shape of the through-hole reinforcing member for steel frame, That is, it is formed so as to protrude outward in the radial direction of the through hole from the outer shape that forms the outer contour of the through hole reinforcing member for steel frame Both are formed so as to protrude outward in the radial direction of the through hole beyond the cone-shaped fracture surface formed at an inclination angle of approximately 45 degrees laterally from the joint between the flange portion of the steel frame and the web. Thus, as described in detail in the section of the embodiment described later, the degree of restraint on the inner concrete surrounded by the flange portion of the steel frame, the web, and the through-hole reinforcing member for reinforced concrete is increased, thereby reinforcing the through-hole. The technical means of further improvement was adopted.

本発明によれば、次の効果を得ることができる。
（１）鉄骨鉄筋コンクリート構造用貫通孔補強構造に特有の鉄骨用貫通孔補強部材と鉄筋コンクリート用貫通孔補強部材とを効果的に組合わせて開孔用のスリーブの中間部と両外側部の３箇所を支持するように構成したので、簡単な支持構造によって打設時のコンクリート圧に安定的に対抗し得る支持強度を簡便に得られる。
（２）しかも、上記突出条件を満たす鉄筋コンクリート用貫通孔補強部材によって、鉄骨のフランジ部及びウェブとの内側に位置するコンクリートに対する拘束度合が高められるので、前記貫通孔に対する補強作用を更に向上することができる。 According to the present invention, the following effects can be obtained.
(1) A steel-hole reinforced concrete structure through-hole reinforcing member, which is unique to a steel-frame reinforced concrete structure-through-hole reinforcing member, and a reinforced concrete through-hole reinforcing member are effectively combined to provide an intermediate portion of the opening sleeve and three locations on both outer sides. Therefore, the support strength capable of stably resisting the concrete pressure at the time of placing can be easily obtained by a simple support structure.
(2) Moreover, since the degree of restraint with respect to the concrete located inside the flange portion and the web of the steel frame is increased by the reinforced concrete through-hole reinforcing member that satisfies the above projecting condition, the reinforcing action for the through-hole is further improved. Can do.

本発明は、鉄骨鉄筋コンクリート構造用の貫通孔補強構造であって、鉄骨のウェブに形成される貫通孔を補強する鉄骨用貫通孔補強部材と、その鉄骨用貫通孔補強部材の両側に設置され、鉄筋コンクリート構造物に形成される貫通孔を補強する鉄筋コンクリート用貫通孔補強部材とを備え、それらの鉄骨用貫通孔補強部材と鉄筋コンクリート用貫通孔補強部材とを貫通するように開孔用のスリーブを設置する形態の鉄骨鉄筋コンクリート構造用貫通孔補強構造であれば、広く適用することができる。なお、前記鉄筋コンクリート用貫通孔補強部材の外周辺の形状、すなわちその外側の輪郭を形成する外形に関しては、少なくとも一部が、前記鉄骨用貫通孔補強部材の外形より前記貫通孔の半径方向外方へ突出するとともに、前記鉄骨のフランジ部とウェブとの接合部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面を越えて前記貫通孔の半径方向外方へ突出するものであれば、鉄筋コンクリート用貫通孔補強部材と鉄骨のフランジ部とウェブとによって囲まれる内側のコンクリートに対する拘束度合が高められ、前記貫通孔に対する補強作用を向上することが可能である。その突出量に関しては、鉄骨のフランジ部に並ぶ高さまでは、突出量が増えるほど、内側のコンクリートに対する拘束度合が高められ、突出量に応じて前記貫通孔に対する補強作用を強化することが可能である。因みに、開孔用のスリーブとしては、適宜の断面形状からなる紙管、鋼管、塩ビ管などが使用される。   The present invention is a through-hole reinforcing structure for a steel reinforced concrete structure, the steel through-hole reinforcing member for reinforcing the through-hole formed in the steel web, and installed on both sides of the steel through-hole reinforcing member, Reinforced concrete through-hole reinforcing member that reinforces the through-hole formed in the reinforced concrete structure, and an opening sleeve is installed so as to pass through those steel through-hole reinforcing member and reinforced concrete through-hole reinforcing member If it is a through-hole reinforcement structure for the steel reinforced concrete structure of the form to do, it can apply widely. In addition, regarding the outer peripheral shape of the reinforced concrete through-hole reinforcing member, that is, the outer shape forming the outer contour thereof, at least a part is radially outward of the through-hole from the outer shape of the steel-frame through-hole reinforcing member. And projecting radially outward of the through hole over a cone-shaped fracture surface formed at an inclination angle of approximately 45 degrees laterally from the joint between the flange portion of the steel frame and the web. If it exists, the restraint degree with respect to the inner concrete enclosed by the through-hole reinforcement member for reinforced concrete, the flange part of a steel frame, and a web can be raised, and the reinforcement effect | action with respect to the said through-hole can be improved. With regard to the amount of protrusion, at the height aligned with the flange portion of the steel frame, the degree of restraint on the inner concrete increases as the amount of protrusion increases, and it is possible to strengthen the reinforcing action on the through hole according to the amount of protrusion. is there. Incidentally, as the sleeve for opening, a paper tube, a steel tube, a PVC tube or the like having an appropriate cross-sectional shape is used.

図１は本発明の実施例の要部をコンクリートの打設前の状態で示した斜視図である。また、図２は前記実施例の正面図、図３はＹ−Ｙ断面図を示したものであり、図４は鉄筋コンクリート用貫通孔補強部材の部分を取出して示した正面図である。図中、１は鉄骨、２は前記鉄骨１に沿って配筋される主筋、３は前記主筋３を囲むように配筋される肋筋や帯筋などのせん断補強筋、４は打設後のコンクリートを示したものであり、これらの鉄骨１、主筋２、せん断補強筋３及びコンクリート４によって本発明の対象である鉄骨鉄筋コンクリート構造の建築物の基礎的構造が構築されることになる。図１〜図３に示したように、鉄骨１はフランジ部５，６とその間のウェブ７からなり、ウェブ７の中央部には貫通孔８が形成され、その貫通孔８の周縁部に短筒状のリング体からなる鉄骨用貫通孔補強部材９を溶接することにより、ウェブ７の貫通孔８の周辺を補強するように構成されている。そして、この鉄骨用貫通孔補強部材９の貫通孔８の部分に開孔用のスリーブ１０を挿通することにより、スリーブ１０の中間部が支持されるように構成している。   FIG. 1 is a perspective view showing a main part of an embodiment of the present invention in a state before placing concrete. 2 is a front view of the above embodiment, FIG. 3 is a YY cross-sectional view, and FIG. 4 is a front view showing a portion of the reinforced concrete through-hole reinforcing member. In the figure, 1 is a steel frame, 2 is a main reinforcing bar arranged along the steel frame 1, 3 is a shear reinforcing bar such as a barb or a reinforcing bar arranged to surround the main reinforcing bar 3, and 4 is after placing These steel frames 1, the main reinforcement 2, the shear reinforcement 3 and the concrete 4 form the basic structure of the steel reinforced concrete structure which is the object of the present invention. As shown in FIGS. 1 to 3, the steel frame 1 includes flange portions 5 and 6 and a web 7 therebetween. A through hole 8 is formed at the center of the web 7, and a short edge is formed around the peripheral portion of the through hole 8. It is configured to reinforce the periphery of the through-hole 8 of the web 7 by welding a steel-hole through-hole reinforcing member 9 made of a cylindrical ring body. Then, an intermediate portion of the sleeve 10 is supported by inserting the opening sleeve 10 into the through-hole 8 portion of the steel-frame through-hole reinforcing member 9.

また、図３に示したように、前記スリーブ１０の両側の外側部は、鉄筋コンクリート用貫通孔補強部材１１，１２によってそれぞれ当接支持されるように構成されている。それらの鉄筋コンクリート用貫通孔補強部材１１，１２は、本実施例では、図４に示したように、１本の金属線材を折曲げて図示のような形状に形成するとともに、その両端部を内側へ折曲げて２個の内方へ突出した突出部１３，１４を形成し、前記貫通孔８の近傍に位置するせん断補強筋３に溶接等により固着される。そして、図１及び図２示したように、本実施例の場合には、それらの突出部１３，１４をスリーブ１０の両側の外側部に対して上方から当接し得るように設置することにより、打設コンクリートによって生じる浮力に対抗し得るように構成している。なお、本実施例では鉄筋コンクリート用貫通孔補強部材１１，１２を１本の金属線材から折曲げ形成する場合を示したが、これに限定されるものではないことはいうまでもない。   Further, as shown in FIG. 3, the outer portions on both sides of the sleeve 10 are configured to be in contact with and supported by the reinforced concrete through-hole reinforcing members 11 and 12, respectively. In the present embodiment, these reinforced concrete through-hole reinforcing members 11 and 12 are formed by bending a single metal wire into a shape as shown in the figure as shown in FIG. The two protruding portions 13 and 14 projecting inwardly are formed by being bent inward, and are fixed to the shear reinforcing bar 3 located in the vicinity of the through hole 8 by welding or the like. As shown in FIGS. 1 and 2, in the case of the present embodiment, by installing the protruding portions 13 and 14 so as to be able to abut against the outer portions on both sides of the sleeve 10 from above, It is configured to be able to resist buoyancy caused by the cast concrete. In addition, although the present Example showed the case where the through-hole reinforcement members 11 and 12 for reinforced concrete were bent and formed from one metal wire, it cannot be overemphasized that it is not limited to this.

以上のように、本実施例によれば、開孔用のスリーブ１０は、その中間部が鉄骨用貫通孔補強部材９によって挿通支持されるとともに、両側の外側部が鉄筋コンクリート用貫通孔補強部材１１，１２の突出部１３，１４によって当接支持されることから、簡単な構成によって的確な支持が可能である。しかも、突出部１３，１４に対向するスリーブ１０の設置部分には大きな空間が形成されることから、スリーブ１０の設置作業が簡便であるとともに、鉄筋コンクリート用貫通孔補強部材１１，１２の設置位置に関する融通性が増し、設置位置に関する位置精度を緩和することができる。   As described above, according to this embodiment, the sleeve 10 for opening is inserted and supported at the intermediate portion thereof by the steel through-hole reinforcing member 9, and the outer portions on both sides are at the through-hole reinforcing member 11 for reinforced concrete. , 12 is supported by the projecting portions 13 and 14 and can be supported accurately with a simple configuration. Moreover, since a large space is formed in the installation portion of the sleeve 10 that faces the protruding portions 13 and 14, the installation operation of the sleeve 10 is simple and the installation position of the through-hole reinforcing members 11 and 12 for reinforced concrete is concerned. The flexibility is increased, and the position accuracy with respect to the installation position can be relaxed.

さらに、本発明においては、前記鉄筋コンクリート用貫通孔補強部材１１，１２の外形、すなわちその鉄筋コンクリート用貫通孔補強部材１１，１２の外側の輪郭を形成する外形の少なくとも一部は、前記鉄骨用貫通孔補強部材９の外形、すなわちその鉄骨用貫通孔補強部材９の外側の輪郭を形成する外形より前記貫通孔８の半径方向外方へ突出するように形成するとともに、かつ前記鉄骨１のフランジ部５，６とウェブ７との接合部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面を越えて前記貫通孔８の半径方向外方へ突出するように形成される。これによって、鉄筋コンクリート用貫通孔補強部材１１，１２と鉄骨１のフランジ部５，６とウェブ７とによってそれぞれ囲まれる内側のコンクリート４に対する拘束度合が高められることから、前記貫通孔８の周辺部に対する補強作用を更に向上することができ、この点でも特徴を有する。   Further, in the present invention, at least a part of the outer shape of the reinforced concrete through-hole reinforcing members 11, 12, that is, the outer shape forming the outer contour of the reinforced concrete through-hole reinforcing members 11, 12 is the steel through-hole. The outer shape of the reinforcing member 9, that is, the outer shape that forms the outer contour of the through hole reinforcing member 9 for the steel frame, is formed so as to protrude outward in the radial direction of the through hole 8, and the flange portion 5 of the steel frame 1 , 6 and the web 7 are formed so as to protrude outward in the radial direction of the through hole 8 beyond a cone-shaped fracture surface formed at an inclination angle of approximately 45 degrees laterally from the joint portion of the web 7. As a result, the degree of restraint on the inner concrete 4 surrounded by the reinforced concrete through-hole reinforcing members 11, 12, the flange portions 5, 6 of the steel frame 1, and the web 7 is increased. The reinforcing action can be further improved, and this is also characteristic.

図５及び図６は、前記鉄筋コンクリート用貫通孔補強部材１１，１２の奏する、該鉄筋コンクリート用貫通孔補強部材１１，１２と鉄骨１のフランジ部５，６とウェブ７とによって囲まれる内側のコンクリートに対する拘束作用を説明するための説明図である。因みに、図５の説明図は、貫通孔８の直径が比較的小さい場合を例示したものであり、鉄筋コンクリート用貫通孔補強部材１１，１２の外形が鉄骨１のフランジ部５，６とウェブ７との接合部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面をぎりぎりに越えて貫通孔８の半径方向外方へ突出した状態を示したものである。また、図６の説明図は、貫通孔８の直径が比較的大きい場合を例示したものであり、鉄筋コンクリート用貫通孔補強部材１１，１２の外形が鉄骨１のフランジ部５，６とウェブ７との接合部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面を越えるだけでなく、さらにフランジ部５，６の外端部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面も越えて貫通孔８の半径方向外方へ突出した状態を示したものである。この場合、前記コンクリートに対する拘束作用の大きさの点では、図６に示した状態の方が望ましいが、図５に示した状態でも拘束作用を得ることが可能である。   FIGS. 5 and 6 illustrate the inner concrete surrounded by the reinforced concrete through-hole reinforcing members 11, 12, the flange portions 5, 6 of the steel frame 1, and the web 7. It is explanatory drawing for demonstrating a restraint effect | action. 5 illustrates the case where the diameter of the through-hole 8 is relatively small, and the outer shape of the reinforced concrete through-hole reinforcing members 11 and 12 is the flange portions 5 and 6 of the steel frame 1 and the web 7. This shows a state of projecting outward in the radial direction of the through-hole 8 beyond the cone-shaped fracture surface formed at an inclination angle of approximately 45 degrees laterally from the joint portion. 6 illustrates the case where the diameter of the through-hole 8 is relatively large, and the outer shape of the reinforced concrete through-hole reinforcing members 11 and 12 is the flange portions 5 and 6 of the steel frame 1 and the web 7. In addition to exceeding the cone-shaped fracture surface formed at an angle of inclination of approximately 45 degrees laterally from the joint portion of the flange portion 5, it is further formed at an angle of inclination of approximately 45 degrees laterally from the outer ends of the flange portions 5 and 6. This shows a state in which the through hole 8 protrudes radially outward beyond the cone-shaped fracture surface. In this case, the state shown in FIG. 6 is desirable in terms of the magnitude of the restraining action on the concrete, but the restraining action can be obtained even in the state shown in FIG.

しかして、当該鉄骨鉄筋コンクリート構造の建築物に対して外力が作用すると、前記鉄骨１のフランジ部５，６とウェブ７の変形に伴って、鉄筋コンクリート用貫通孔補強部材１１，１２と鉄骨１のフランジ部５，６とウェブ７とによって囲まれる内側の部分（イ）のコンクリートに対して、図示のような分力Ａ〜Ｃが作用することになる。すなわち、フランジ部５，６の変形に伴って側方へ向けてほぼ４５度の傾斜角で作用するコーン状破壊力Ａと、同様にフランジ部５，６の変形に伴ってウェブ７に沿った方向に作用する圧縮力Ｂと、ウェブ７の面外方向の変形に伴って側方へ向けての押圧力Ｃが作用することになる。これに対して、本発明に係る鉄骨鉄筋コンクリート構造用貫通孔補強構造の場合には、前述のように、鉄筋コンクリート用貫通孔補強部材１１，１２の外形の少なくとも一部を、前記鉄骨用貫通孔補強部材９の外形より貫通孔８の半径方向外方へ突出するように形成するとともに、かつ鉄骨１のフランジ部５，６とウェブ７との接合部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面を越えて貫通孔８の半径方向外方へ突出するように形成することから、その突出した部分が、図示のように前記コーン状破壊力Ａ及び押圧力Ｃに対する拘束作用を高めることになる。なお、本実施例の場合には、前記圧縮力Ｂに対しては、図示のように鉄骨用貫通孔補強部材９が拘束作用を奏することになる。因みに、前記スリーブ１０の強度が大きい場合には、スリーブ１０自体も圧縮力Ｂに対抗する拘束作用を奏する。   Thus, when an external force is applied to the steel reinforced concrete structure building, the flanges 5 and 6 of the steel frame 1 and the web 7 are deformed, and the through-hole reinforcing members 11 and 12 for reinforced concrete and the flange of the steel frame 1 are combined. Component forces A to C as shown in the figure act on the concrete in the inner part (A) surrounded by the parts 5 and 6 and the web 7. That is, along the deformation of the flange portions 5 and 6, the cone-shaped breaking force A acting at an inclination angle of about 45 degrees toward the side, and similarly along the web 7 along with the deformation of the flange portions 5 and 6. The compressive force B acting in the direction and the pressing force C directed to the side act along with the deformation of the web 7 in the out-of-plane direction. On the other hand, in the case of the through-hole reinforcing structure for steel reinforced concrete structure according to the present invention, as described above, at least a part of the outer shape of the through-hole reinforcing members 11 and 12 for reinforced concrete is reinforced with the through-hole for steel frame. It is formed so as to protrude outward in the radial direction of the through-hole 8 from the outer shape of the member 9 and is formed at an inclination angle of approximately 45 degrees laterally from the joint between the flange portions 5 and 6 of the steel frame 1 and the web 7. Since it is formed so as to protrude outward in the radial direction of the through-hole 8 beyond the cone-shaped fracture surface to be formed, the projecting portion has a restraining action on the cone-shaped fracture force A and the pressing force C as shown in the figure. Will increase. In the case of the present embodiment, the steel through-hole reinforcing member 9 exerts a restraining action on the compressive force B as shown in the figure. Incidentally, when the strength of the sleeve 10 is high, the sleeve 10 itself exerts a restraining action against the compressive force B.

以上のように、本発明に係る鉄骨鉄筋コンクリート構造用貫通孔補強構造によれば、鉄筋コンクリート用貫通孔補強部材１１，１２の外形の少なくとも一部を、前記鉄骨用貫通孔補強部材９の外形より貫通孔８の半径方向外方へ突出するように形成するとともに、かつ鉄骨１のフランジ部５，６とウェブ７との接合部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面を越えて貫通孔８の半径方向外方へ突出するように形成するという簡単な構成によって、その突出した部分により前記コーン状破壊力Ａ及び押圧力Ｃに対する拘束度合を高めて、前記貫通孔８の周辺部に対する補強作用を更に向上することができる。   As described above, according to the through-hole reinforcing structure for a steel reinforced concrete structure according to the present invention, at least a part of the outer shape of the through-hole reinforcing members 11 and 12 for reinforced concrete penetrates from the outer shape of the through-hole reinforcing member 9 for steel frame. A cone-shaped fracture surface formed so as to protrude outward in the radial direction of the hole 8 and formed at an inclination angle of approximately 45 degrees laterally from the joint portion between the flange portions 5 and 6 of the steel frame 1 and the web 7. And the degree of restraint against the cone-shaped breaking force A and the pressing force C is increased by the protruding portion, so that the through hole 8 is protruded radially outward of the through hole 8. It is possible to further improve the reinforcing action on the peripheral portion of the.

図７は本発明の他の実施例の要部を示した拡大断面図である。図示のように、本実施例は、外周面に凹状の溝１５を形成した鉄骨用貫通孔補強部材１６を採用した場合を示したもので、他の構成に関しては前記実施例の場合と同じである。しかして、本実施例の場合には、鉄骨用貫通孔補強部材１６の外周面に形成した凹状の溝１５のコンクリート４に対する保持作用によって、より的確な拘束作用を得ることができる。なお、鉄骨用貫通孔補強部材９，１６や鉄筋コンクリート用貫通孔補強部材１１，１２の具体的構成に関しては、上記実施例に限定されるものではなく、種々の変形が可能である。   FIG. 7 is an enlarged cross-sectional view showing the main part of another embodiment of the present invention. As shown in the figure, the present embodiment shows a case where a steel-frame through-hole reinforcing member 16 having a concave groove 15 formed on the outer peripheral surface is employed, and other configurations are the same as those in the above-described embodiment. is there. Thus, in the case of the present embodiment, a more accurate restraining action can be obtained by the holding action of the concave groove 15 formed on the outer peripheral surface of the steel-frame through-hole reinforcing member 16 with respect to the concrete 4. In addition, about the concrete structure of the through-hole reinforcement members 9 and 16 for steel frames and the through-hole reinforcement members 11 and 12 for reinforced concrete, it is not limited to the said Example, A various deformation | transformation is possible.

本発明の実施例の要部をコンクリートの打設前の状態で示した斜視図である。It is the perspective view which showed the principal part of the Example of this invention in the state before placement of concrete. 同実施例を示した正面図である。It is the front view which showed the same Example. 同実施例のＹ−Ｙ断面図である。It is YY sectional drawing of the Example. 鉄筋コンクリート用貫通孔補強部材の部分を示した正面図である。It is the front view which showed the part of the through-hole reinforcement member for reinforced concrete. 鉄筋コンクリート用貫通孔補強部材の奏する、鉄骨のフランジ部とウェブ７とによって囲まれるコンクリートに対する拘束作用を説明するための説明図である。It is explanatory drawing for demonstrating the restraint effect | action with respect to the concrete surrounded by the flange part of a steel frame, and the web 7 which the through-hole reinforcement member for reinforced concrete plays. 他の実施例における鉄筋コンクリート用貫通孔補強部材の奏する同上の拘束作用を説明するための説明図である。It is explanatory drawing for demonstrating the same restraining effect which the through-hole reinforcement member for reinforced concrete in another Example show | plays. 本発明の他の実施例の要部を示した拡大断面図である。It is the expanded sectional view which showed the principal part of the other Example of this invention.

符号の説明Explanation of symbols

１…鉄骨、２…主筋、３…せん断補強筋、４…打設後のコンクリート、５，６…フランジ部、７…ウェブ、８…貫通孔、９…鉄骨用貫通孔補強部材、１０…スリーブ、１１，１２…鉄筋コンクリート用貫通孔補強部材、１３，１４…突出部、１５…溝、１６…鉄骨用貫通孔補強部材   DESCRIPTION OF SYMBOLS 1 ... Steel frame, 2 ... Main reinforcement, 3 ... Shear reinforcement, 4 ... Concrete after placement, 5, 6 ... Flange part, 7 ... Web, 8 ... Through-hole, 9 ... Through-hole reinforcement member for steel frames, 10 ... Sleeve , 11, 12 ... Reinforced concrete through-hole reinforcing member, 13, 14 ... Projection, 15 ... Groove, 16 ... Steel through-hole reinforcing member

Claims (1)

鉄骨のウェブに形成される貫通孔を補強する鉄骨用貫通孔補強部材と、その鉄骨用貫通孔補強部材の側方に設置され、鉄筋コンクリート構造物に形成される貫通孔を補強する鉄筋コンクリート用貫通孔補強部材とを備え、それらの鉄骨用貫通孔補強部材と鉄筋コンクリート用貫通孔補強部材とを貫通するように開孔用のスリーブを設置する鉄骨鉄筋コンクリート構造用貫通孔補強構造であって、前記鉄筋コンクリート用貫通孔補強部材の外形の少なくとも一部は、前記鉄骨用貫通孔補強部材の外形より前記貫通孔の半径方向外方へ突出するように形成するとともに、かつ前記鉄骨のフランジ部とウェブとの接合部から側方へほぼ４５度の傾斜角で形成されるコーン状破壊面を越えて前記貫通孔の半径方向外方へ突出するように形成したことを特徴とする鉄骨鉄筋コンクリート構造用貫通孔補強構造。   A through-hole reinforcing member for steel that reinforces the through-hole formed in the steel web, and a through-hole for reinforced concrete that is installed on the side of the through-hole reinforcing member for steel frame and reinforces the through-hole formed in the reinforced concrete structure A through-hole reinforcing structure for a steel reinforced concrete structure, comprising a reinforcing member, and a sleeve for opening so as to penetrate the through-hole reinforcing member for steel frame and the through-hole reinforcing member for reinforced concrete. At least a part of the outer shape of the through hole reinforcing member is formed so as to protrude outward in the radial direction of the through hole from the outer shape of the through hole reinforcing member for steel frame, and the flange portion of the steel frame and the web are joined to each other And formed so as to protrude outward in the radial direction of the through hole beyond the cone-shaped fracture surface formed at an inclination angle of approximately 45 degrees from the side to the side. Steel reinforced concrete structures through holes reinforcing structure to symptoms.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016008384A (en) * 2014-06-23 2016-01-18 株式会社フジタ Hybrid beam

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Publication number Priority date Publication date Assignee Title
JPH07238635A (en) * 1994-02-28 1995-09-12 Taisei Corp Web opening part reinforcing method of steel structural beam
JPH09203161A (en) * 1996-01-25 1997-08-05 Tokyu Constr Co Ltd Bored reinforcing material and reinforced structure for concrete structure
JPH10131396A (en) * 1996-10-31 1998-05-19 Hirao Tetsuken Kk Penetration hole reinforcing apparatus of reinforced concrete structure
JP2006348651A (en) * 2005-06-17 2006-12-28 Hitachi Metals Techno Ltd Reinforcing structure of steel framed reinforced concrete structural material, and its construction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07238635A (en) * 1994-02-28 1995-09-12 Taisei Corp Web opening part reinforcing method of steel structural beam
JPH09203161A (en) * 1996-01-25 1997-08-05 Tokyu Constr Co Ltd Bored reinforcing material and reinforced structure for concrete structure
JPH10131396A (en) * 1996-10-31 1998-05-19 Hirao Tetsuken Kk Penetration hole reinforcing apparatus of reinforced concrete structure
JP2006348651A (en) * 2005-06-17 2006-12-28 Hitachi Metals Techno Ltd Reinforcing structure of steel framed reinforced concrete structural material, and its construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016008384A (en) * 2014-06-23 2016-01-18 株式会社フジタ Hybrid beam

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