JP5196643B2

JP5196643B2 - Through-hole reinforcement structure for steel reinforced concrete structures

Info

Publication number: JP5196643B2
Application number: JP2008037607A
Authority: JP
Inventors: 治克角屋; 貴章平山; 学村田; 政照久保
Original assignee: Kurimoto Ltd
Current assignee: Kurimoto Ltd
Priority date: 2008-02-19
Filing date: 2008-02-19
Publication date: 2013-05-15
Anticipated expiration: 2028-02-19
Also published as: JP2009197409A

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）。しかしながら、この従来技術の場合には、スリーブの両側の外側部の支持手段が別途必要とされるだけでなく、仮に鉄筋コンクリート用貫通孔補強部材に形成した内方へ突出した４個の突出部によって周囲から当接支持するように構成した場合には、それらの４個の突出部によって規制される内方の狭い空間に対してスリーブを挿通する必要から、鉄筋コンクリート用貫通孔補強部材の設置位置に関するずれに対する許容度は小さく、高い位置精度が要求されるとともに、その４個の突出部によって規制される狭い空間に対してスリーブを挿通する関係からスリーブの設置作業自体にも困難性が伴うという厄介な問題があった。
特開２００６−３４８６５１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). However, in the case of this prior art, not only support means for the outer portions on both sides of the sleeve are separately required, but also by four projecting portions projecting inwardly formed in the reinforced concrete through-hole reinforcing member. In the case of being configured to contact and support from the periphery, it is necessary to insert the sleeve into the narrow inner space restricted by the four projecting portions, and therefore the installation position of the reinforced concrete through-hole reinforcing member is related to The tolerance for deviation is small, high positional accuracy is required, and the sleeve installation operation itself is difficult due to the insertion of the sleeve into a narrow space restricted by the four protrusions. There was a serious problem.
JP 2006-348651 A

また、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）。この従来技術の場合にも、スリーブを４個の突出部によって規制される内方の狭い空間に対してスリーブを挿通する必要から、鉄筋コンクリート用貫通孔補強部材の設置位置に関するずれに対する許容度は小さく、高い位置精度が要求されるとともに、その４個の突出部によって規制される狭い空間に対してスリーブを挿通する関係からスリーブの設置作業自体にも困難性が伴うという厄介な問題があった。
特開２００７−２５７８号公報 In addition, 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). ). Also in the case of this prior art, since it is necessary to insert the sleeve into the narrow inner space restricted by the four projecting portions, the tolerance for the displacement regarding the installation position of the through-hole reinforcing member for reinforced concrete is small. In addition to the requirement for high positional accuracy, there has been a troublesome problem that the sleeve installation work itself is difficult due to the insertion of the sleeve into the narrow space restricted by the four protrusions.
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、鉄筋コンクリート用貫通孔補強部材の設置位置に関する融通性があり、かつ開孔用のスリーブの設置作業の作業性が良好で、しかも前記スリーブを的確に支持することができ、コンクリートの打設時に作用する圧力に対しても十分な支持強度を簡便に確保し得る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, and has a simple configuration and flexibility regarding the installation position of the reinforced concrete through-hole reinforcing member, and the installation of the sleeve for opening the hole. Through-hole reinforcement structure for steel reinforced concrete structure that has good workability, can support the sleeve accurately, and can easily ensure sufficient support strength against the pressure acting when placing concrete Is intended to provide.

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短筒状のリング体からな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金属線材を折曲げ形成してな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、前記スリーブは、前記鉄骨用貫通孔補強部材を形成する短筒状のリング体に挿通して中間部を支持するとともに、その両側の外側部を金属線材からなる両側の前記鉄筋コンクリート用貫通孔補強部材にそれぞれ折曲げ形成した２個の内方へ突出した突出部によって上方から２点のみで当接支持するという技術手段を採用した。すなわち、本発明では、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のウェブに形成される貫通孔を補強するための鉄骨用貫通孔補強部材を形成する短筒状のリング体を有効に活用して開孔用のスリーブの中間部を支持するとともに、そのスリーブの両側の外側部に関しては、それぞれ両側の鉄筋コンクリート用貫通孔補強部材に折曲げ形成した２個の内方への突出部により上方から２点のみで当接支持するという支持形態を採用したものである。つまり、開孔用のスリーブの中間部を鉄骨用貫通孔補強部材を形成する短筒状のリング体に挿通支持するとともに、そのスリーブの両側の外側部に対する前記突出部による当接支持の数をそれぞれ打設時のコンクリート圧に安定的に対抗するために最小限必要な２点のみとし、それらの２点の当接支持部に対向して広い空間を形成することにより、前記課題を解決した点に特徴を有するものである。 In the present invention, in order to solve the above-mentioned problems, a steel through-hole reinforcing member made of a short cylindrical ring body that reinforces a through-hole formed in a steel web and both sides of the steel through-hole reinforcing member are installed. A reinforced concrete through-hole reinforcing member formed by bending a metal wire that reinforces the through-hole formed in the reinforced concrete structure, the steel through-hole reinforcing member and the reinforced concrete through-hole reinforcing member A through-hole reinforcing structure for a steel reinforced concrete structure in which a sleeve for opening is provided so as to penetrate, wherein the sleeve is inserted into a short cylindrical ring body forming the through-hole reinforcing member for steel frame, to support the, protruding the outer portion of both sides to the two inward was bent form on both sides of the reinforced concrete through holes reinforcing member made of a metal wire butt Employing the technical means that contacts and supports only two points from above by parts. That is, in the present invention, a short cylindrical ring body that effectively forms a through-hole reinforcing member for steel to reinforce a through-hole formed in a steel web peculiar to a through-hole reinforcing structure for a steel reinforced concrete structure is effectively utilized. Then, while supporting the intermediate portion of the sleeve for opening, the outer portions on both sides of the sleeve are raised by two inwardly projecting portions formed by bending the reinforced concrete through-hole reinforcing members on both sides. From this, a support form in which the contact is supported at only two points is adopted . That is, the intermediate portion of the opening sleeve is inserted into and supported by the short cylindrical ring body forming the steel-steel through-hole reinforcing member, and the number of abutting supports by the protruding portions with respect to the outer portions on both sides of the sleeve is set. The above-mentioned problems have been solved by forming only two points that are the minimum necessary to stably oppose the concrete pressure at the time of placing, and forming a wide space facing the abutting support portions of these two points . It is characterized by a point.

（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側の外側部、すなわちスリーブの長手方向に間隔をあけた状態の３箇所においてスリーブを支持するように構成したので、前記鉄筋コンクリート用貫通孔補強部材に形成した２個の内方への突出部による当接支持という簡単な支持構造にも拘らず、前記スリーブの中間部の支持との組合わせからなる３点支持構造によって、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が得られる。
（２）すなわち、開孔用のスリーブの中間部を鉄骨用貫通孔補強部材を形成する短筒状のリング体に挿通支持することによるスリーブの取付け状態の保持と、前記開孔用のスリーブの両側の外側部に対する、両側の鉄筋コンクリート用貫通孔補強部材にそれぞれ折曲げ形成した２個の内方への突出部による上方からの当接支持との組合せが相俟って、簡単な構成により打設時のコンクリート圧に安定的に対抗し得るスリーブの支持構造を簡便に実現することができる。
（３）しかも、その開孔用のスリーブの両側の外側部に対しては、上方から鉄筋コンクリート用貫通孔補強部材に形成した２個の内方への突出部を当接支持するように構成したので、打設時のコンクリート圧、とりわけ打設コンクリートによって生じる浮力に対しても効果的に対抗することができる。
（４）開孔用のスリーブの外側部に対して上記２個の突出部を用いて上方から２点のみで当接支持するように構成したので、それらの２個の突出部による当接支持部に対向した下方の部分に広い作業空間を形成することが可能なことから、スリーブの設置作業の作業性が大幅に向上するとともに、鉄筋コンクリート用貫通孔補強部材の設置位置に関する融通性が増し、その設置位置に関する位置精度を緩和することができる。 (1) An effective combination of a through-hole reinforcing member for a steel frame and a through-hole reinforcing member for a reinforced concrete, which are unique to the through-hole reinforcing structure for a steel reinforced concrete structure, Since the sleeve is supported at three positions spaced apart in the longitudinal direction of the sleeve, a simple support of abutting support by two inwardly protruding portions formed in the reinforced concrete through-hole reinforcing member is provided. Regardless of the support structure, the three-point support structure comprising a combination with the support of the intermediate portion of the sleeve can provide a support strength that can stably resist the concrete pressure during placement.
(2) That is, maintaining the attachment state of the sleeve by inserting and supporting the intermediate portion of the opening sleeve through a short cylindrical ring body forming the through-hole reinforcing member for steel frame; Combined with a combination of abutment support from above by two inwardly protruding parts formed on the reinforced concrete through-hole reinforcing members on both sides with respect to the outer side parts on both sides, it has a simple structure. A sleeve support structure capable of stably resisting the concrete pressure at the time of installation can be easily realized.
(3) In addition, two inwardly projecting portions formed on the reinforced concrete through-hole reinforcing member from the upper side are configured to abut against and support the outer portions on both sides of the opening sleeve. Therefore, it is possible to effectively counter the concrete pressure at the time of placing, in particular, buoyancy generated by the placed concrete.
(4) Since the two protrusions are used to contact and support the outer portion of the opening sleeve at only two points from above, the contact support by these two protrusions is provided. Since it is possible to form a wide working space in the lower part facing the part, the workability of the sleeve installation work is greatly improved, and the flexibility regarding the installation position of the reinforced concrete through-hole reinforcing member is increased, Position accuracy regarding the installation position can be relaxed.

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。その開孔用のスリーブとしては、紙管、鋼管、塩ビ管などの適宜の断面形状からなる筒状体が使用される。筒状体であれば、必ずしも一体成形したものに限られない。また、前記鉄骨用貫通孔補強部材及び鉄筋コンクリート用貫通孔補強部材は、開孔用のスリーブを短筒状のリング体からなる鉄骨用貫通孔補強部材に挿通して中間部を支持するとともに、その両側の外側部を金属線材からなる鉄筋コンクリート用貫通孔補強部材に折曲げ形成した２個の内方へ突出した突出部により、それぞれ上方から２点のみで当接支持することによって、スリーブの中間部と両側部の３箇所を支持し得るものであればよい。とりわけ、スリーブの外側部を支持する両側の鉄筋コンクリート用貫通孔補強部材に関しては、それぞれ内方へ突出した２個の突出部によってスリーブの外側部を上方から２点のみで当接支持し得るものであれば、それ以上の具体的構成は問うところではない。すなわち、そのスリーブの外側部に対する突出部の当接支持の形態に関しては、打設時のコンクリート圧、とりわけ打設コンクリートによって生じる浮力に対抗するため、スリーブの上方から突出部を当接させて支持する形態が採用される。なお、スリーブ設置の際の作業空間を十分に確保するには、鉄筋コンクリート用貫通孔補強部材のすべての突出部が貫通孔の上半分の範囲内に位置する形態が望ましい。

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. As the opening sleeve, a cylindrical body having an appropriate cross-sectional shape such as a paper tube, a steel tube, or a vinyl chloride tube is used. If it is a cylindrical body, it is not necessarily restricted to what was integrally molded. Further, the steel through hole reinforcing member and the reinforced concrete through hole reinforcing member support an intermediate portion by inserting an opening sleeve through a steel through hole reinforcing member made of a short cylindrical ring , The middle part of the sleeve is supported by two inwardly projecting parts formed by bending the outer side parts of both sides into a reinforced concrete through-hole reinforcing member made of a metal wire , at only two points from above. As long as it can support three places on both sides. Especially, with respect to both sides of the reinforced concrete through hole reinforcing member that supports the outer portion of the sleeve, as it can contact supporting an outer portion of the sleeve only in two points from above by two protrusion protruding respectively inwardly If so, there are no more specific configurations to ask. In other words, with respect to the form of abutment support of the protrusion against the outer portion of the sleeve, the protrusion is abutted from above the sleeve to support the concrete pressure at the time of placing, especially buoyancy caused by the placed concrete. The form to do is adopted. In order to secure a sufficient working space when installing the sleeve, it is desirable that all the protruding portions of the reinforced concrete through-hole reinforcing member are located within the upper half of the through-hole .

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の周縁部に図示のように前記貫通孔８とほぼ同じ内径の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すなわち前記リング体の内部に対して開孔用のスリーブ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 is composed of flange portions 5 and 6 and a web 7 therebetween. A through hole 8 is formed in the center portion of the web 7, and is illustrated at a peripheral portion of the through hole 8. Thus, the periphery of the through-hole 8 of the web 7 is reinforced by welding the steel-hole through-hole reinforcing member 9 formed of a short cylindrical ring body having substantially the same inner diameter as the through-hole 8. . And the intermediate part of the sleeve 10 is supported by inserting the sleeve 10 for opening with respect to the through-hole 8 of this through-hole reinforcement member 9 for steel frames, ie, the inside of the said ring body . .

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している。そして、図１及び図２に示したように、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。また、スリーブが外管と内管とからなる伸縮構造のスリーブであるときは、鉄骨用貫通孔補強部材と前記スリーブの外管との間隙に楔状部材を差込む方法を採用することができる。この方法によれば、楔状部材によって外管と内管を固定して一体化できるため、位置調整時にスリーブが内管挿入部で腰折れせず、容易に両側の端部を鉄筋コンクリート用貫通孔補強部材により当接支持できる。

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. Two projecting 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, the protruding portions 13 and 14 are installed so as to be able to abut against the outer portions on both sides of the sleeve 10 from above. The buoyancy generated by the cast concrete can be countered. 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. Further, when the sleeve is a stretchable sleeve composed of an outer tube and an inner tube, a method of inserting a wedge-like member into the gap between the steel-through-hole reinforcing member and the outer tube of the sleeve can be employed. According to this method, since the outer tube and the inner tube can be fixed and integrated by the wedge-shaped member, the sleeve does not break at the inner tube insertion portion at the time of position adjustment, and the end portions on both sides can be easily reinforced concrete through-hole reinforcing members. Can be supported by contact.

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。なお、前述のように、鉄骨用貫通孔補強部材９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。 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. In addition, as above-mentioned, regarding the concrete structure of the through-hole reinforcement member 9 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.

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 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 ... Reinforcing hole reinforcing member for reinforced concrete, 13, 14 ... Projection

Claims

A through-hole reinforcing member for steel consisting of a short cylindrical ring body that reinforces a through-hole formed in a steel web, and a through-hole formed on both sides of the steel through-hole reinforcing member and formed in a reinforced concrete structure A reinforced concrete through-hole reinforcing member formed by bending a metal wire material that reinforces the steel, and an opening sleeve is installed so as to penetrate the through-hole reinforcing member for steel frame and the through-hole reinforcing member for reinforced concrete A through-hole reinforcing structure for a steel reinforced concrete structure, wherein the sleeve is inserted into a short cylindrical ring body forming the through-hole reinforcing member for a steel frame to support an intermediate portion, and outer portions on both sides thereof are supported. two Tose' upward from two points only by the projecting portion protruding inwardly of the bent respectively formed on the reinforced concrete through hole reinforcing member on both sides made of a metallic wire Steel reinforced concrete structures through holes reinforcing structure characterized by being configured to.