JP6478832B2 - Seismic reinforcement structure - Google Patents

Seismic reinforcement structure Download PDF

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JP6478832B2
JP6478832B2 JP2015126545A JP2015126545A JP6478832B2 JP 6478832 B2 JP6478832 B2 JP 6478832B2 JP 2015126545 A JP2015126545 A JP 2015126545A JP 2015126545 A JP2015126545 A JP 2015126545A JP 6478832 B2 JP6478832 B2 JP 6478832B2
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steel
frame
upper side
steel plate
steel frame
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JP2017008630A (en
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太志 大堀
太志 大堀
平川　恭章
恭章 平川
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Takenaka Corp
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Description

本発明は、耐震補強構造に関する。   The present invention relates to a seismic reinforcement structure.

特許文献１には、既設梁柱架構の内面に増設するブレース部材が設けられた架構補強用面材に関する技術が開示されている。この先行技術では、架構補強用面材における既設梁柱架構の内面形状に合せて形成された枠部材の上面には、既設梁柱架構を構成する上梁部材を抱持する凹部を形成する取付金具が枠部材に固定されている。   Patent Document 1 discloses a technique related to a frame reinforcing face member provided with a brace member to be added on the inner surface of an existing beam column frame. In this prior art, the upper surface of the frame member formed in accordance with the inner surface shape of the existing beam column frame in the frame reinforcing face material is provided with a recess for holding the upper beam member constituting the existing beam column frame. The metal fitting is fixed to the frame member.

しかし、架構補強用面材の枠部材の上面の取付金具（凹部）は、既設架構の上梁部材との接着面積の増加には寄与するが、上梁部材の補強や剛性及び耐力の向上には殆ど寄与しない。   However, the mounting bracket (concave portion) on the upper surface of the frame member of the frame member for reinforcing the frame contributes to an increase in the bonding area with the upper beam member of the existing frame, but it can reinforce the upper beam member and improve rigidity and strength. Hardly contributes.

特開２００５−２２６２３８号JP 2005-226238 A

本発明は、上記事実を鑑み、耐震要素で耐震補強する架構の梁の剛性及び耐力を高めるための施工を容易にすることが目的である。   In view of the above facts, an object of the present invention is to facilitate construction for increasing the rigidity and proof strength of a beam of a frame that is seismically reinforced with seismic elements.

請求項１の発明は、架構内に設置され、耐震要素が設けられた鉄骨枠と、前記鉄骨枠の上辺部に設けられた鋼板部と、前記架構の既設鉄骨梁の周囲に配筋し、前記鋼板部を梁下部の型枠としてコンクリートを打設し構築された鉄骨鉄筋コンクリート梁と、を備えている。   The invention of claim 1 is arranged in a frame and provided with an anti-seismic element, a steel plate provided on the upper side of the steel frame, and arranged around the existing steel beam of the frame, A steel-framed reinforced concrete beam constructed by placing concrete with the steel plate portion as a formwork under the beam.

請求項１の発明では、耐震要素が設けられた鉄骨枠を架構内に設置して耐震補強する。また、架構の鉄骨梁の周囲に配筋し、鉄骨枠の上辺部の鋼板部を梁下部の型枠としてコンクリートを打設し、鉄骨鉄筋コンクリート梁とすることで梁の剛性及び耐力を向上させる。また、鉄骨枠の上辺部に設けられた鋼板部によって鉄骨鉄筋コンクリート梁が補強される。よって、架構の耐震性能が効果的に向上する。   In the invention of claim 1, the steel frame provided with the seismic element is installed in the frame to reinforce the earthquake. In addition, the steel frame is arranged around the steel beam of the frame, and the concrete is cast using the steel plate part on the upper side of the steel frame as the mold of the lower part of the beam, thereby improving the rigidity and proof stress of the steel frame. Further, the steel frame reinforced concrete beam is reinforced by a steel plate portion provided on the upper side of the steel frame. Therefore, the seismic performance of the frame is effectively improved.

また、コンクリートを打設する際に、鉄骨枠の上辺部に設けた鋼板部を型枠として利用するので、施工性が向上する。更に、例えば既設の鉄骨梁に鋼板を溶接して補強する場合と比較し、溶接箇所（特に上向き溶接）が減少するので、施工性がよい。   Moreover, since the steel plate part provided in the upper side part of the steel frame is utilized as a formwork when placing concrete, workability is improved. Furthermore, compared with the case where, for example, a steel plate is welded to an existing steel beam and reinforced, the number of welded portions (particularly upward welding) is reduced, so that workability is good.

したがって、耐震要素で耐震補強する架構の梁の剛性及び耐力を高めるための施工が容易である。   Therefore, the construction for increasing the rigidity and proof strength of the beam of the frame to be seismically reinforced with the seismic element is easy.

請求項２の発明は、前記鉄骨枠は前記架構内に開口部を残して設置され、前記鉄骨枠の前記上辺部及び前記鋼板部の少なくとも一方の開口側端部には、前記鉄骨鉄筋コンクリート梁に埋設される補強筋が設けられている。   According to a second aspect of the present invention, the steel frame is installed leaving an opening in the frame, and at least one opening side end of the upper side of the steel frame and the steel plate is formed on the steel reinforced concrete beam. A reinforcing bar to be buried is provided.

請求項２の発明では、鉄骨枠の上辺部及び前記鋼板部の少なくとも一方の開口側端部に、鉄骨鉄筋コンクリート梁に埋設される補強筋を設けることで、開口部分の剛性及び耐力が向上する。   In the invention of claim 2, the reinforcement and the proof stress of the opening portion are improved by providing the reinforcing bar embedded in the steel-framed reinforced concrete beam at the opening side end of at least one of the upper side portion of the steel frame and the steel plate portion.

請求項３の発明は、前記鉄骨枠の前記上辺部及び前記鋼板部の少なくとも一方には、前記鉄骨鉄筋コンクリート梁に埋設される応力伝達部材が設けられている。   According to a third aspect of the present invention, at least one of the upper side portion and the steel plate portion of the steel frame is provided with a stress transmission member embedded in the steel reinforced concrete beam.

請求項３の発明では、応力伝達部材を介して、鉄骨枠の上辺部と鉄骨鉄筋コンクリート梁との間で効果的に応力伝達することができる。   In the invention of claim 3, stress can be effectively transmitted between the upper side portion of the steel frame and the steel reinforced concrete beam via the stress transmission member.

本発明によれば、耐震要素で耐震補強する架構の梁の剛性及び耐力を高めるための施工を容易に行うことができる。   ADVANTAGE OF THE INVENTION According to this invention, the construction for improving the rigidity and proof strength of the beam of the frame which is seismically reinforced with an earthquake-resistant element can be performed easily.

本発明の一実施形態の耐震補強構造が適用された架構の正面図である。It is a front view of the frame to which the seismic reinforcement structure of one embodiment of the present invention was applied. （Ａ）は図１の２Ａ−２Ａ線に沿った縦断面図であり、（Ｂ）は図１の２Ｂ−２Ｂ線に沿った縦断面図であり、（Ｃ）は図１の２Ｃ−２Ｃ線に沿った縦断面図である。(A) is a longitudinal sectional view taken along line 2A-2A in FIG. 1, (B) is a longitudinal sectional view taken along line 2B-2B in FIG. 1, and (C) is 2C-2C in FIG. It is a longitudinal cross-sectional view along a line. （Ａ）は図１の隅部の拡大正面図であり、（Ｂ）は（Ａ）の３Ｂ−３Ｂ線に沿った縦断面図であり、（Ｃ）は（Ａ）の３Ｃ−３Ｃ線に沿った縦断面図である。(A) is an enlarged front view of the corner part of FIG. 1, (B) is a longitudinal cross-sectional view along the 3B-3B line of (A), (C) is the 3C-3C line of (A). It is the longitudinal cross-sectional view along.

本発明の一実施形態の耐震補強構造について説明する。なお、図１の正面図では、梁主筋３２などの一部の部材は判り易くするため実線で図示している。   The seismic reinforcement structure of one embodiment of the present invention will be described. In the front view of FIG. 1, some members such as the beam main reinforcing bars 32 are shown by solid lines for easy understanding.

＜構造＞
本発明の一実施形態の耐震補強構造について説明する。なお、上下方向をＺ方向とし、後述する架構１０の面外方向をＹ方向とし、Ｚ方向及びＹ方向と直交する架構１０の左右方向をＸ方向とする。 <Structure>
The seismic reinforcement structure of one embodiment of the present invention will be described. The vertical direction is the Z direction, the out-of-plane direction of the frame 10 described later is the Y direction, and the horizontal direction of the frame 10 orthogonal to the Z direction and the Y direction is the X direction.

図１に示す本発明の一実施形態の耐震補強構造が適用された架構１０は、鉄骨鉄筋コンクリート造の柱２０と鉄骨梁３０（図２を参照）とで構成された既設架構１２内に、Ｖ字状に配置されたブレース５０が設けられた正面視矩形状の鉄骨枠１００が設置されることで耐震補強されている。更に、既設架構１２の既設の鉄骨梁３０（図２を参照）を鉄骨鉄筋コンクリート造の梁４０とし剛性及び耐力を上げることで効果的に耐震補強されている。また、本実施形態では、鉄骨枠１００は既設架構１２（架構１０）内の図１における右側部分に、出入口となる開口部１４を残して設置されている。   A frame 10 to which the seismic reinforcement structure of one embodiment of the present invention shown in FIG. 1 is applied includes an existing frame 12 composed of a steel reinforced concrete column 20 and a steel beam 30 (see FIG. 2). Seismic reinforcement is provided by installing a steel frame 100 having a rectangular shape in front view provided with braces 50 arranged in a letter shape. Furthermore, the existing steel beam 30 (see FIG. 2) of the existing frame 12 is used as a steel reinforced concrete beam 40, and the seismic reinforcement is effectively performed by increasing the rigidity and the strength. Moreover, in this embodiment, the steel frame 100 is installed in the right side part in FIG. 1 in the existing frame 12 (frame 10), leaving the opening part 14 used as an entrance / exit.

なお、図１に示す本実施形態の鉄骨枠１００は、フランジ８２及びフランジ８４とウェブ８６とを有するＨ形鋼８０で構成されている（図２及び図３も参照）。   In addition, the steel frame 100 of this embodiment shown in FIG. 1 is comprised with the H-section steel 80 which has the flange 82, the flange 84, and the web 86 (refer also FIG.2 and FIG.3).

正面視で矩形枠状の鉄骨枠１００の上側の左右両側の隅部には、上側ガセットプレート５２が接合され（図３（Ａ）も参照）、鉄骨枠１００の下辺部１１０の左右方向（Ｘ方向）の中間部には、下側ガセットプレート５４が接合されている。これら上側ガセットプレート５２と下側ガセットプレート５４とにブレース５０が接合されている。   Upper gusset plates 52 are joined to the left and right corners on the upper side of the rectangular steel frame 100 in a front view (see also FIG. 3A), and the horizontal direction (X The lower gusset plate 54 is joined to an intermediate portion in the direction). A brace 50 is joined to the upper gusset plate 52 and the lower gusset plate 54.

鉄骨枠１００の図における左側の縦辺部１１２と柱２０との間には、コンクリートやモルタル等の充填材Ｊが充填され、この充填材Ｊが充填された充填部２２に縦辺部１１２に設けられたスタッド１１４が埋設されている。また、充填部２２と柱２０とは、後施工の接着系のアンカー２５で接合されている。   Between the vertical side portion 112 and the column 20 on the left side in the figure of the steel frame 100, a filler J such as concrete or mortar is filled, and the filling portion 22 filled with the filler J fills the vertical side portion 112. The provided stud 114 is embedded. Moreover, the filling part 22 and the pillar 20 are joined by the adhesive anchor 25 of the post construction.

同様に、鉄骨枠１００の下辺部１１０とスラブ４９（梁４８）との間には、充填材Ｊが充填され、この充填材Ｊが充填された充填部２４に下辺部１１０に設けられたスタッド１１５が埋設されている。また、充填部２４とスラブ４９（梁４８）とは、後施工の接着系のアンカー２７で接合されている。   Similarly, a filling material J is filled between the lower side portion 110 of the steel frame 100 and the slab 49 (beam 48), and a stud provided on the lower side portion 110 in the filling portion 24 filled with the filling material J. 115 is buried. Further, the filling portion 24 and the slab 49 (beam 48) are joined together by a post-installed adhesive anchor 27.

架構１０の上側の梁４０は、前述したように、図２に示すように、既設の鉄骨梁３０の周囲に梁主筋３２とせん断補強筋３４とが配筋され、コンクリートＫが打設されることで構築されている。また、図１に示すように、上側の梁４０と左右の柱２０とは、後施工の接着系のアンカー３６で接合されている（図２（Ｃ）も参照）。   As described above, the beam 40 on the upper side of the frame 10 has the beam main bar 32 and the shear reinforcement bar 34 arranged around the existing steel beam 30, and the concrete K is placed thereon as shown in FIG. It is built by that. Moreover, as shown in FIG. 1, the upper beam 40 and the left and right columns 20 are joined by a post-installed adhesive anchor 36 (see also FIG. 2C).

図１に示すように、鉄骨枠１００の上辺部１２０に設けられたスタッド１２２は、梁４０に埋設されている（図２（Ａ）も参照）。また、鉄骨枠１００の上辺部１２０の開口部１４側の端部には補強筋１２４が設けられると共に、補強筋１２４は梁４０に埋設されている。   As shown in FIG. 1, the stud 122 provided on the upper side 120 of the steel frame 100 is embedded in the beam 40 (see also FIG. 2A). Further, a reinforcing bar 124 is provided at the end of the upper side 120 of the steel frame 100 on the opening 14 side, and the reinforcing bar 124 is embedded in the beam 40.

図２（Ａ）、図２（Ｂ）及び図３に示すように、鉄骨枠１００の上辺部１２０には、断面形状がＵ字状（溝状）の鋼板部１５０が設けられている。鋼板部１５０は、Ｈ形鋼の上側のフランジ８２と、フランジ８２の面外方向（Ｙ方向）の両外側に接合された略Ｌ字形状のＬ字鋼板１５２と、で構成されている。図３に示すように、Ｌ字鋼板１５２は、側面部１５３と、フランジ８２に接合された底部１５４とで構成されている。   As shown in FIGS. 2A, 2 </ b> B, and 3, the upper side portion 120 of the steel frame 100 is provided with a steel plate portion 150 having a U-shaped (grooved) cross-sectional shape. The steel plate portion 150 includes an upper flange 82 of H-shaped steel and a substantially L-shaped steel plate 152 joined to both outer sides of the flange 82 in the out-of-plane direction (Y direction). As shown in FIG. 3, the L-shaped steel plate 152 includes a side surface portion 153 and a bottom portion 154 joined to the flange 82.

図１、図２（Ｃ）及び図３（Ｃ）に示すように、鉄骨枠１００の上辺部１２０の鋼板部１５０は、図１における右側の柱２０（図１参照）まで延在された延在部１５１が設けられている。なお、本実施形態では、図１に示すように、鋼板部１５０の延在部１５１の延在端部には、下側に延在する接合部１５５が形成されている。この接合部１５５は、後施工のアンカー３８で柱２０と接合されている。   As shown in FIGS. 1, 2C and 3C, the steel plate portion 150 of the upper side 120 of the steel frame 100 extends to the right column 20 (see FIG. 1) in FIG. A standing portion 151 is provided. In the present embodiment, as shown in FIG. 1, a joint portion 155 that extends downward is formed at the extending end portion of the extending portion 151 of the steel plate portion 150. The joint 155 is joined to the pillar 20 by a post-installed anchor 38.

なお、図２に示すように、鋼板部１５０は、梁４０の梁下部４０Ａの外側に接触配置され、後述するようにコンクリートＫを打設する際の型枠の一部として利用される。   As shown in FIG. 2, the steel plate portion 150 is disposed in contact with the outside of the beam lower portion 40A of the beam 40, and is used as a part of a formwork when placing concrete K as will be described later.

＜施工方法＞
次に、施工方法の一例について説明する。 <Construction method>
Next, an example of a construction method will be described.

図１に示すように、鉄骨鉄筋コンクリート造の柱２０と鉄骨梁３０（図２参照）とで構成された既設架構１２内に、Ｖ字状に配置されたブレース５０が設けられた正面視矩形状の鉄骨枠１００を設置する。   As shown in FIG. 1, a rectangular shape in front view in which braces 50 arranged in a V shape are provided in an existing frame 12 composed of steel reinforced concrete columns 20 and steel beams 30 (see FIG. 2). The steel frame 100 is installed.

鉄骨枠１００の左側の縦辺部１１２と柱２０との間に充填材Ｊを充填し、この充填材Ｊが充填された充填部２２に縦辺部１１２のスタッド１１４を埋設すると共に、充填部２２と柱２０とを後施工の接着系のアンカー２５で接合する。   A filler J is filled between the vertical side portion 112 on the left side of the steel frame 100 and the column 20, and the stud 114 of the vertical side portion 112 is embedded in the filling portion 22 filled with the filler J, and the filling portion 22 and the pillar 20 are joined together by a post-installed adhesive anchor 25.

同様に、鉄骨枠１００の下辺部１１０とスラブ４９（梁４８）との間に充填材Ｊを充填し、この充填材Ｊが充填された充填部２４に下辺部１１０のスタッド１１５を埋設すると共に、充填部２４とスラブ４９（梁４８）とを後施工の接着系のアンカー２７で接合する。   Similarly, the filler J is filled between the lower side 110 of the steel frame 100 and the slab 49 (beam 48), and the stud 115 of the lower side 110 is embedded in the filler 24 filled with the filler J. Then, the filling portion 24 and the slab 49 (beam 48) are joined by an adhesive anchor 27 for post-installation.

図２に示すように、鉄骨梁３０の周囲に梁主筋３２及びせん断補強筋３４を配筋すると共に型枠を設置し、コンクリートＫを打設し、鉄骨鉄筋コンクリート造の梁４０とする。このとき、鉄骨枠１００の上辺部１２０の鋼板部１５０を梁下部４０Ａの型枠として利用する。   As shown in FIG. 2, a beam main bar 32 and a shear reinforcement bar 34 are arranged around a steel beam 30 and a formwork is installed, and concrete K is cast to form a steel reinforced concrete beam 40. At this time, the steel plate part 150 of the upper side part 120 of the steel frame 100 is utilized as a formwork of the beam lower part 40A.

また、図１に示すように、鉄骨枠１００の上辺部１２０の鋼板部１５０の延在部１５１に延在端部に設けられた接合部１５５を後施工のアンカー３８で柱２０と接合する。   Further, as shown in FIG. 1, a joint portion 155 provided at an extended end portion of the steel plate portion 150 of the upper side portion 120 of the steel frame 100 is joined to the column 20 by a post-installed anchor 38.

＜作用及び効果＞
次に、本実施形態の作用及び効果について説明する。 <Action and effect>
Next, the operation and effect of this embodiment will be described.

ブレース５０が設けられた鉄骨枠１００を既設架構１２内に設置することで耐震補強される。また、既設架構１２の鉄骨梁３０の周囲に梁主筋３２及びせん断補強筋３４を配筋し、鉄骨枠１００の上辺部１２０の鋼板部１５０を梁下部４０Ａの型枠としてコンクリートＫを打設し、鉄骨鉄筋コンクリート造の梁４０とすることで剛性及び耐力が向上する。また、鉄骨枠１００の上辺部１２０の鋼板部１５０によって梁４０が補強される。よって、架構１０の耐震性能が効果的に向上する。   Seismic reinforcement is provided by installing the steel frame 100 provided with the braces 50 in the existing frame 12. Further, the main beam 32 and the shear reinforcement bar 34 are arranged around the steel beam 30 of the existing frame 12, and the concrete K is cast using the steel plate portion 150 of the upper side portion 120 of the steel frame 100 as a formwork of the beam lower portion 40A. By using the steel-frame reinforced concrete beam 40, rigidity and proof stress are improved. Further, the beam 40 is reinforced by the steel plate portion 150 of the upper side portion 120 of the steel frame 100. Therefore, the seismic performance of the frame 10 is effectively improved.

また、コンクリートＫを打設する際に、鉄骨枠１００の上辺部１２０に設けた鋼板部１５０を型枠として利用するので、施工性が向上する。また、例えば既設の鉄骨梁３０に鋼板を溶接して補強する場合と比較し、溶接箇所（特に上向き溶接）が減少するので、施工性がよい。   Moreover, since the steel plate part 150 provided in the upper side part 120 of the steel frame 100 is utilized as a formwork when placing concrete K, workability is improved. Moreover, compared with the case where a steel plate is welded and reinforce | strengthened to the existing steel beam 30, for example, since a welding location (especially upward welding) reduces, workability | operativity is good.

したがって、ブレース５０で耐震補強した架構１０の梁４０の剛性及び耐力を高めるための施工が容易である。   Therefore, the construction for enhancing the rigidity and the proof stress of the beam 40 of the frame 10 reinforced with the earthquake resistance by the brace 50 is easy.

また、鉄骨枠１００の上辺部１２０に、梁４０に埋設される補強筋１２４を設けることで、架構１０における開口部１４の剛性及び耐力が向上する。   Further, by providing the reinforcing bars 124 embedded in the beam 40 on the upper side portion 120 of the steel frame 100, the rigidity and proof stress of the opening portion 14 in the frame 10 are improved.

また、鉄骨枠１００の上辺部１２０に設けたスタッド１２２を介して、上辺部１２０と梁４０との間で効果的に応力伝達することができる。   In addition, stress can be effectively transmitted between the upper side 120 and the beam 40 via the stud 122 provided on the upper side 120 of the steel frame 100.

このように、既設架構１２内にブレース５０が設けられた鉄骨枠１００を設置して耐震補強すると共に、既設の鉄骨梁３０を鉄骨枠１００の上辺部１２０の鋼板部１５０を型枠の一部として利用して鉄骨鉄筋コンクリート造とすることで、梁４０の剛性及び耐力を向上させ且つ補強し、架構１０の耐震性能を効果的に向上させている。   In this manner, the steel frame 100 provided with the braces 50 is installed in the existing frame 12 to be seismically reinforced, and the steel beam 30 of the upper side 120 of the steel frame 100 is used as a part of the mold frame. As a result, the rigidity and proof strength of the beam 40 are improved and reinforced, and the seismic performance of the frame 10 is effectively improved.

＜その他＞
尚、本発明は上記実施形態に限定されない。 <Others>
The present invention is not limited to the above embodiment.

例えば、上実施形態では、鉄骨枠１００の上辺部１２０におけるＵ字形状（溝状）の鋼板部１５０部分が開口部１４に延在していたが、これに限定されない。上辺部１２０全体が開口部１４に延在していてもよい。また、延在部１５１が設けられていなくてもよい。   For example, in the above embodiment, the U-shaped (groove-shaped) steel plate portion 150 portion in the upper side portion 120 of the steel frame 100 extends to the opening portion 14, but is not limited thereto. The entire upper side 120 may extend to the opening 14. Further, the extending portion 151 may not be provided.

また、例えば、上実施形態では、鉄骨枠１００は既設架構１２（架構１０）内の図１における左右方向の右側部分に開口部１４を残して設置されているが、これに限定されない。図１における左右方向の左側部分に開口部１４を残すようにしてもよし、左右方向の中央部（中間部）に開口部１４を残すようにしてもよい。或いは、開口部１４を残さなくてもよい。   Further, for example, in the above embodiment, the steel frame 100 is installed in the existing frame 12 (frame 10) with the opening 14 left in the right side portion in the left-right direction in FIG. 1, but the present invention is not limited to this. The opening 14 may be left in the left side portion in the left-right direction in FIG. 1, or the opening 14 may be left in the central portion (intermediate portion) in the left-right direction. Alternatively, the opening 14 may not be left.

また、例えば、上記実施形態では、鉄骨枠１００の上辺部１２０のＵ字状（溝状）の鋼板部１５０を型枠として利用したが、これに限定されない。型枠となる鋼板部は、Ｕ字状（溝状）以外の構造であってもよい。例えば、側面部１５３がない、フランジ８２と底部１５４とで底型枠として機能する構成であってもよい。   For example, in the said embodiment, although the U-shaped (groove-shaped) steel plate part 150 of the upper side part 120 of the steel frame 100 was utilized as a formwork, it is not limited to this. The steel plate part to be a mold may have a structure other than a U shape (groove shape). For example, the structure which functions as a bottom mold form by the flange 82 and the bottom part 154 without the side part 153 may be sufficient.

また、例えば、上記実施形態では、鉄骨枠１００はＨ形鋼８０で構成されていたが、これに限定されない。Ｈ形鋼以外の鋼材、例えば、Ｔ形鋼、Ｉ形鋼、矩形鋼管等でもよい。   For example, in the said embodiment, although the steel frame 100 was comprised with the H-section steel 80, it is not limited to this. Steel materials other than H-shaped steel, for example, T-shaped steel, I-shaped steel, rectangular steel pipe, etc. may be used.

また、ブレース５０以外の耐震要素であってもよい。例えば波形鋼板などの鋼製壁でもよい。あるいは、制震ブレースなどの制震機能を有する耐震要素であってもよい。   Moreover, seismic elements other than the brace 50 may be used. For example, a steel wall such as a corrugated steel plate may be used. Alternatively, it may be an earthquake-resistant element having a vibration control function such as a vibration control brace.

更に、本発明の要旨を逸脱しない範囲において種々なる態様で実施し得ることは言うまでもない   Furthermore, it cannot be overemphasized that it can implement with a various aspect in the range which does not deviate from the summary of this invention.

１０ 架構
１４ 開口部
４０ 梁（鉄骨鉄筋コンクリート梁）
５０ ブレース（耐震要素の一例）
１００ 鉄骨枠
１２０ 上辺部
１２４ 補強筋
１２２ スタッド（応力伝達部材の一例）
１５０ 鋼板部 10 frame 14 opening 40 beam (steel reinforced concrete beam)
50 brace (an example of seismic element)
DESCRIPTION OF SYMBOLS 100 Steel frame 120 Upper side part 124 Reinforcement bar 122 Stud (an example of a stress transmission member)
150 Steel plate part

Claims (3)

架構内に設置され、耐震要素が設けられた鉄骨枠と、
前記鉄骨枠の上辺部に設けられた鋼板部と、
前記架構の既設鉄骨梁の周囲に配筋し、前記鋼板部を梁下部の型枠としてコンクリートを打設し構築された鉄骨鉄筋コンクリート梁と、
を備えた耐震補強構造。 A steel frame installed in the frame and provided with seismic elements;
A steel plate provided on the upper side of the steel frame;
Steel reinforced concrete beams constructed by placing concrete around the existing steel beam of the frame, and placing concrete with the steel plate part as a formwork at the bottom of the beam,
Seismic reinforcement structure with 前記鉄骨枠は前記架構内に開口部を残して設置され、
前記鉄骨枠の前記上辺部及び前記鋼板部の少なくとも一方の開口側端部には、前記鉄骨鉄筋コンクリート梁に埋設される補強筋が設けられた請求項１に記載の耐震補強構造。 The steel frame is installed leaving an opening in the frame,
The seismic reinforcement structure according to claim 1, wherein a reinforcing bar embedded in the steel-framed reinforced concrete beam is provided at at least one opening side end of the upper side part and the steel plate part of the steel frame. 前記鉄骨枠の前記上辺部及び前記鋼板部の少なくとも一方には、前記鉄骨鉄筋コンクリート梁に埋設される応力伝達部材が設けられた請求項１又は請求項２に記載の耐震補強構造。   The earthquake-proof reinforcement structure of Claim 1 or Claim 2 with which the stress transmission member embed | buried under the said steel frame reinforced concrete beam was provided in at least one of the said upper side part of the said steel frame, and the said steel plate part.
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