JP4584088B2 - Reinforcing method and structure of existing steel member of steel structure - Google Patents

Reinforcing method and structure of existing steel member of steel structure Download PDF

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JP4584088B2
JP4584088B2 JP2005266005A JP2005266005A JP4584088B2 JP 4584088 B2 JP4584088 B2 JP 4584088B2 JP 2005266005 A JP2005266005 A JP 2005266005A JP 2005266005 A JP2005266005 A JP 2005266005A JP 4584088 B2 JP4584088 B2 JP 4584088B2
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plate
steel
reinforcing
steel member
face
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JP2007077643A (en
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時和 小島
豊人 荒井
武史 寺本
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Kumagai Gumi Co Ltd
Toda Corp
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Kumagai Gumi Co Ltd
Toda Corp
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本発明は、鉄骨建造物の鉄骨部材の補強を現場において無溶接により可能とする補強方法及び補強構造に関する。   The present invention relates to a reinforcing method and a reinforcing structure that enable reinforcement of a steel member of a steel structure building without welding at the site.

鉄骨建造物における鉄骨部材の補強方法は、鉄骨柱と鉄骨梁との接合部において鉄骨柱と鉄骨梁とを溶接によって互いに接合するとともに補強部材としての補強梁受けピースと鉄骨梁の下フランジとを溶接で接合することによって鉄骨柱と鉄骨梁との接合部の補強を行う。
特開２０００−１９２５４７号公報 The method of reinforcing a steel member in a steel structure is to join the steel column and the steel beam together by welding at the joint between the steel column and the steel beam, and to connect the reinforcing beam receiving piece as the reinforcing member and the lower flange of the steel beam. The joint between the steel column and the steel beam is reinforced by welding.
JP 2000-192547 A

しかしながら、自動車工場、塗装工場などのように火災の発生しやすい既設の鉄骨建造物における鉄骨部材の補強工事において、既設の鉄骨部材と補強用の鉄骨部材とを溶接によって接合する方法は、溶接の際に発生する火花が、火災の原因となったり、工場内の製造製品を損傷させる原因となる恐れがあるため、にわかに採用しがたいという欠点があり、現場溶接によらない補強方法が求められている。   However, in the reinforcement work of steel members in existing steel structures that are prone to fire, such as automobile factories and paint factories, the method of joining existing steel members and reinforcing steel members by welding is the method of welding. The sparks that occur during the process may cause a fire or cause damage to manufactured products in the factory. ing.

本発明による鉄骨建造物の既設鉄骨部材の補強方法は、既設鉄骨部材の面体の表裏面のうちの一方の面に一方板を設け、面体の両側部の端面にそれぞれ中板を設け、面体の両側部側の他方の面にそれぞれ他方板を設け、一方板と中板と他方板とで面体の両側部側における一方の面と端面と他方の面とを覆った状態で一方板と中板と他方板とをボルト及びナットによって互いに連結することによって、一方板と中板と他方板とを既設鉄骨部材の面体に固定し、さらに、他方板と補強鉄骨部材とをボルト及びナットによって互いに連結したことを特徴とする。
本発明による鉄骨建造物の既設鉄骨部材の補強構造は、既設鉄骨部材と、補強鉄骨部材と、既設鉄骨部材と補強鉄骨部材とを連結する連結部とを備え、既設鉄骨部材が表面及び裏面を有した面体を備え、連結部が、面体の表裏面のうちの一方の面に設けられる一方板と、面体の両側部の端面にそれぞれ設けられる中板と、面体の両側部側の他方の面にそれぞれ設けられる他方板とを備え、一方板と中板と他方板とで面体の両側部側における一方の面と端面と他方の面とが覆われた状態で一方板と中板と他方板とがボルト及びナットによって互いに連結されたことによって、一方板と中板と他方板とが既設鉄骨部材の面体に固定され、他方板と補強鉄骨部材とがボルト及びナットによって互いに連結されたことを特徴とする。一方板あるいは他方板が中板を備えた複合板により形成されたことや、既設鉄骨部材の延長方向に沿って複数の連結部が間欠的に設けられ、既設鉄骨部材と補強鉄骨部材とが複数の連結部により互いに連結されことも特徴とする。 The method for reinforcing an existing steel member of a steel structure according to the present invention is provided with one plate on one of the front and back surfaces of the face of the existing steel member, and an intermediate plate on each end face of the face, The other plate is provided on the other surface on both sides, and the one plate and the intermediate plate are covered with the one plate, the intermediate plate, and the other plate covering the one surface, the end surface, and the other surface on both sides of the face piece. And the other plate are connected to each other by bolts and nuts to fix the one plate, the middle plate and the other plate to the face of the existing steel member, and the other plate and the reinforcing steel member are connected to each other by bolts and nuts. It is characterized by that.
The reinforcing structure of an existing steel member of a steel structure according to the present invention includes an existing steel member, a reinforcing steel member, and a connecting portion that connects the existing steel member and the reinforcing steel member, and the existing steel member has a front surface and a back surface. And a connecting portion provided on one side of the front and back surfaces of the face piece, an intermediate plate provided on each end face of the face piece, and the other face on both sides of the face piece. The one plate, the middle plate, and the other plate in a state in which one side, the end surface, and the other side of the side face are covered with the one plate, the middle plate, and the other plate. Are connected to each other by bolts and nuts, so that the one plate, the middle plate, and the other plate are fixed to the face body of the existing steel member, and the other plate and the reinforcing steel member are connected to each other by the bolt and the nut. Features. The one plate or the other plate is formed of a composite plate provided with an intermediate plate, or a plurality of connecting portions are provided intermittently along the extending direction of the existing steel member, and a plurality of existing steel members and reinforcing steel members are provided. It is also characterized by being connected to each other by the connecting portion.

本発明による鉄骨建造物の既設鉄骨部材の補強方法によれば、鉄骨建造物の鉄骨部材の補強工事を溶接作業なしのボルト接合により行えるので、補強工事に起因する火災や工場内の製造製品の損傷を少なくできる。また、既設鉄骨部材に対して加工作業を何ら行うことなく補強工事が行える。また、ボルト接合による簡単な作業及び簡単な構造の補強構造が得られる。一方板あるいは他方板が中板を備えた複合板により形成されたものを用いることによって、連結部を構成する板を一方板と他方板との２つの板により構成でき、部品点数を減らせるので、連結作業を容易とできる。既設鉄骨部材の延長方向に沿って複数の連結部が間欠的に設けられ、既設鉄骨部材と補強鉄骨部材とが複数の連結部により互いに連結されたことにより、既設鉄骨部材の圧縮強度（座屈強度）を向上（補強）でき、既設鉄骨部材の早期座屈防止が図れる。   According to the method for reinforcing an existing steel member of a steel structure according to the present invention, the steel member of the steel structure can be reinforced by bolting without welding work. Damage can be reduced. Moreover, the reinforcement work can be performed without performing any processing work on the existing steel member. Further, a simple work by bolting and a reinforcing structure with a simple structure can be obtained. By using the one plate or the other plate formed by a composite plate having an intermediate plate, the plate constituting the connecting portion can be constituted by two plates, one plate and the other plate, and the number of parts can be reduced. The connection work can be made easy. A plurality of connecting portions are intermittently provided along the extending direction of the existing steel member, and the existing steel member and the reinforcing steel member are connected to each other by the plurality of connecting portions, so that the compressive strength (buckling) of the existing steel member is reduced. Strength) can be improved (reinforced), and early buckling of existing steel members can be prevented.

図１乃至図３は最良の形態を示し、図１は鉄骨建造物の補強構造を分解した斜視図、図２は鉄骨建造物の補強構造を分解した断面図、図３は鉄骨建造物の補強構造を示す断面図である。   1 to 3 show the best mode, FIG. 1 is an exploded perspective view of a steel structure reinforcement structure, FIG. 2 is an exploded sectional view of a steel structure reinforcement structure, and FIG. 3 is a reinforcement of a steel structure structure. It is sectional drawing which shows a structure.

図１を参照し、鉄骨建造物の補強構造を構成する構成要素を説明する。補強構造は、既設鉄骨部材１、連結部２、補強鉄骨部材３により構成される。既設鉄骨部材１は、屋根トラスの下弦材５、束材６、斜材７、その他図外の上弦材、柱、梁などである。ここでは、既設鉄骨部材１としての下弦材５の補強構造について説明する。下弦材５は、縦板１０と横板１１とを備えた断面Ｌ字形状のＬ形鋼と呼ばれる長尺鋼材１２を２つ用いることによって形成された断面逆Ｔ字形状の長尺な鉄骨部材である。つまり、下弦材５は、２つの長尺鋼材１２；１２の縦板１０；１０が背中合わせにされた状態で２つの長尺鋼材１２；１２が水平方向に配置され、２つの長尺鋼材１２；１２の縦板１０；１０間に接続板１３が介在され、縦板１０と接続板１３と縦板１０とがリベット１４のような連結具で互いに連結されて構成される。接続板１３は、２つの長尺鋼材１２；１２の延長方向に沿って所定の間隔を隔てて配置される。２つの長尺鋼材１２；１２の横板１１；１１の下面１５；１５により下弦材５の下面が形成される。２つの長尺鋼材１２；１２の横板１１；１１の上面１６；１６により下弦材５の上面が形成される。即ち、下弦材５を構する２つの長尺鋼材１２；１２の横板１１；１１により、表面及び裏面を有した面体が形成される。下弦材５の下面を形成する横板１１；１１の下面１５；１５が面体の表裏面のうちの一方の面に相当し、下弦材５の上面を形成する横板１１；１１の上面１６；１６が面体の他方の面に相当する。接続板１３には、束材６と斜材７とがリベット１７により接続される。束材６及び斜材７は、下弦材５と同じ形態である。即ち、縦板と横板とを備えた断面Ｌ字形状に形成されたＬ形鋼と呼ばれる長尺鋼材を２つ用いることによって形成された断面逆Ｔ字形状の長尺な鉄骨部材である。補強鉄骨部材３は、縦板３０と横板３１とを備えた断面Ｌ字形状のＬ形鋼と呼ばれる長尺鋼材により形成される。   With reference to FIG. 1, the component which comprises the reinforcement structure of a steel structure building is demonstrated. The reinforcing structure includes an existing steel member 1, a connecting portion 2, and a reinforcing steel member 3. The existing steel member 1 is a lower chord member 5, a bundle member 6, an oblique member 7, and other upper chord members, columns, beams and the like not shown in the figure. Here, the reinforcing structure of the lower chord material 5 as the existing steel member 1 will be described. The lower chord material 5 is a long steel member having an inverted T-shaped cross section formed by using two long steel materials 12 called L-shaped steels having an L-shaped cross section each having a vertical plate 10 and a horizontal plate 11. It is. In other words, the lower chord member 5 is composed of two long steel members 12; 12 in a state where the longitudinal plates 10 of the two long steel members 12; The connecting plate 13 is interposed between the twelve vertical plates 10; 10, and the vertical plate 10, the connecting plate 13, and the vertical plate 10 are connected to each other by a connecting tool such as a rivet 14. The connecting plate 13 is arranged at a predetermined interval along the extending direction of the two long steel members 12; 12. The bottom surface of the lower chord member 5 is formed by the two long steel members 12; The upper surface of the lower chord member 5 is formed by the two long steel members 12; That is, a face body having a front surface and a back surface is formed by the two long steel members 12; The lateral plate 11 forming the lower surface of the lower chord material 5; the lower surface 15; 11 of the 11 corresponds to one of the front and back surfaces of the face piece, and the upper surface 16 of the horizontal plate 11 forming the upper surface of the lower chord material 5; 16 corresponds to the other surface of the face piece. The bundle member 6 and the diagonal member 7 are connected to the connection plate 13 by rivets 17. The bundle material 6 and the diagonal material 7 have the same form as the lower chord material 5. That is, it is a long steel member having an inverted T-shaped cross section formed by using two long steel materials called L-shaped steels each having an L-shaped cross section including a vertical plate and a horizontal plate. The reinforcing steel frame member 3 is formed of a long steel material called L-shaped steel having an L-shaped cross section including a vertical plate 30 and a horizontal plate 31.

連結部２は、一方板としての下板２０、中板２１；２１、他方板としての上板２２；２２、下板２０と中板２１と上板２２とにそれぞれ形成された貫通孔２３；２４；２５を経由するボルト２６、貫通孔２３；２４；２５を経由したボルト２６に締結されて下板２０と中板２１と上板２２とを互いに連結するナット２７、上板２２と補強鉄骨部材３の横板３１とにそれぞれ形成された貫通孔３５；３６（図２参照）を経由するボルト３７、貫通孔３５；３６を経由したボルト３７に締結されて上板２２と補強鉄骨部材３の横板３１とを互いに連結するナット３８（図２参照）を備える。中板２１の板厚は長尺鋼材１２の横板１１の板厚と同じである。下板２０、中板２１、上板２２は、鋼板により形成される。   The connecting portion 2 includes a lower plate 20 and an intermediate plate 21; 21 as one plate, an upper plate 22 and 22 as the other plate, and through holes 23 formed in the lower plate 20, the intermediate plate 21 and the upper plate 22; 24, a bolt 26 passing through 25, a through hole 23; a nut 27 that is fastened to the bolt 26 passing through 24; 25 and connects the lower plate 20, the middle plate 21, and the upper plate 22 to each other, the upper plate 22 and the reinforcing steel frame The upper plate 22 and the reinforcing steel member 3 are fastened to the bolt 37 passing through the through holes 35; 36 (see FIG. 2) respectively formed in the horizontal plate 31 of the member 3 and the bolt 37 passing through the through holes 35; 36. The nut 38 (refer FIG. 2) which connects the horizontal plate 31 of each other is provided. The plate thickness of the intermediate plate 21 is the same as the plate thickness of the horizontal plate 11 of the long steel material 12. The lower plate 20, the middle plate 21, and the upper plate 22 are formed of steel plates.

次に補強方法を説明する。図２に示すように、２つの長尺鋼材１２；１２の横板１１；１１の下面１５；１５により形成される下弦材５の下面と下板２０の上面とを互いに対面させ、下板２０の両側部に形成された貫通孔２３；２３の部分を、下弦材５の下面の両側の端縁５ａ；５ａより外側に張り出すように位置させる。下板２０の両側部の上面にそれぞれ中板２１；２１を配置する。下弦材５を形成する２つの長尺鋼材１２；１２の横板１１；１１の上面１６；１６と中板２１；２１の上面とにそれぞれ上板２２；２２を配置する。中板２１の一端縁２１ａを下弦材５の端面５ａに突き付けて、上板２２の貫通孔２５、中板２１の貫通孔２４、下板２０の貫通孔２３が上下方向に連なるように各貫通孔２５；２４；２３の中心を一致させ、ボルト２６を上方から貫通孔２５；２４；２３に通して、ボルト２６の下端にナット２７を締結する。以上により、図３に示すように、下弦材５の両側部の端面５ａ；５ａ側において、端面５ａ；５ａと中板２１；２１の一端面２１ａ；２１ａとが互いに接触し、端面５ａ；５ａ側の上面と上板２２；２２の下面とが互いに接触し、端面５ａ；５ａ側の下面と下板２０の上面とが互いに接触した状態を維持するように、ボルト２６およびナット２７によって下板２０と中板２１と上板２２と下弦材５とが互いに連結されるので、連結部を形成する下板２０と中板２１；２１と上板２２；２２とが、図３の矢示Ａに示す方向に動かないように、下弦材５を形成する２つの長尺鋼材１２；１２の横板１１；１１（即ち、既設鉄骨部材１としての下弦材５の下部に設けられた面体）に固定された構造となる。そして、上板２２；２２の上面に補強鉄骨部材３；３の横板３１；３１を配置し、横板３１の貫通孔３６と上板２２の貫通孔３５とが上下方向に連なるように各貫通孔３６；３５の中心を一致させ、ボルト３７を上方から貫通孔３６；３５に通して、ボルト３７の下端にナット３８を締結する。以上により、図３に示すように、下弦材５における長尺鋼材１２；１２の横板１１；１１と補強鉄骨部材３；３の横板３１；３１とが連結部２により互いに連結され、下弦材５が補強鉄骨部材３；３によって補強された補強構造が形成される。   Next, a reinforcing method will be described. As shown in FIG. 2, the lower plate 20 is formed such that the lower surface of the lower chord member 5 formed by the two long steel members 12; The portions of the through holes 23; 23 formed on both sides of the lower chord member 5 are positioned so as to protrude outward from the end edges 5a; Intermediate plates 21; 21 are respectively arranged on the upper surfaces of both side portions of the lower plate 20. Upper plates 22; 22 are arranged on the upper surfaces 16; 16 of the two long steel members 12; 12 forming the lower chord member 5; One end edge 21a of the intermediate plate 21 is abutted against the end surface 5a of the lower chord member 5, and the through hole 25 of the upper plate 22, the through hole 24 of the intermediate plate 21, and the through hole 23 of the lower plate 20 are connected in the vertical direction. The centers of the holes 25; 24; 23 are made to coincide with each other, the bolt 26 is passed through the through holes 25; 24; 23 from above, and the nut 27 is fastened to the lower end of the bolt 26. Thus, as shown in FIG. 3, the end surfaces 5a; 5a and the one end surfaces 21a; 21a of the intermediate plate 21; 21 are in contact with each other on the end surfaces 5a; The lower plate is secured by bolts 26 and nuts 27 so that the upper surface on the side and the lower surface of the upper plate 22; 22 are in contact with each other, and the lower surface on the end surface 5a; 5a side and the upper surface of the lower plate 20 are maintained in contact with each other. 20, the middle plate 21, the upper plate 22, and the lower chord member 5 are connected to each other, so that the lower plate 20, the middle plate 21; 21 and the upper plate 22; The two long steel members 12 forming the lower chord member 5; the horizontal plates 11 of the two chord members 11; 11 (that is, the face provided at the lower portion of the lower chord member 5 as the existing steel member 1) It becomes a fixed structure. Further, the horizontal plates 31; 31 of the reinforcing steel frame members 3; 3 are arranged on the upper surface of the upper plate 22; The centers of the through holes 36; 35 are made to coincide with each other, the bolts 37 are passed through the through holes 36; 35 from above, and the nuts 38 are fastened to the lower ends of the bolts 37. As described above, as shown in FIG. 3, the horizontal plates 11; 11 of the long steel members 12; 12 and the horizontal plates 31; 31 of the reinforcing steel member 3; 3 in the lower chord member 5 are connected to each other by the connecting portion 2. A reinforcing structure in which the material 5 is reinforced by the reinforcing steel member 3; 3 is formed.

連結部２は、下弦材５の延長方向に沿って所定の間隔を隔てて設けられる。例えば、下弦材５の延長方向に沿って６００ｍｍ間隔（ピッチ）で連結部２が複数設けられ、この複数の連結部２；２・・・によって、下弦材５と補強鉄骨部材３；３とが互いに連結された補強構造を形成する。言い換えれば、下弦材５の延長方向に沿って複数の連結部２；２・・・が間欠的に設けられる。   The connecting portions 2 are provided at predetermined intervals along the extending direction of the lower chord material 5. For example, a plurality of connecting portions 2 are provided at intervals (pitch) of 600 mm along the extending direction of the lower chord material 5, and the lower chord material 5 and the reinforcing steel member 3; 3 are connected by the plurality of connecting portions 2; Reinforcing structures connected to each other are formed. In other words, a plurality of connecting portions 2; 2... Are intermittently provided along the extending direction of the lower chord material 5.

最良の形態によれば、自動車工場、塗装工場などの鉄骨建造物の鉄骨部材の補強工事を現場での溶接作業なしのボルト接合により行えるので、補強工事に起因する火災や工場内の製造製品の損傷を少なくできる。また、既設鉄骨部材である下弦材５に対して孔あけのような加工作業を何ら行うことなく補強構造が得られる。また、ボルト接合による簡単な作業及び簡単な構造の補強構造が得られる。また、下弦材５の延長方向に沿って複数の連結部２；２・・・が間欠的に設けられ、下弦材５と補強鉄骨部材３；３とが複数の連結部２により互いに連結され、下弦材５が補強鉄骨部材３；３によって補強されたので、図３の紙面に直交する方向の力に対する下弦材５の圧縮強度（座屈強度）を向上（補強）でき、下弦材５の早期座屈防止が図れる。   According to the best mode, the steel members of steel buildings such as automobile factories and paint factories can be reinforced by bolting without welding work on site. Damage can be reduced. Further, the reinforcing structure can be obtained without performing any machining operation such as drilling the lower chord member 5 which is an existing steel frame member. Further, a simple work by bolting and a reinforcing structure with a simple structure can be obtained. .. Are intermittently provided along the extending direction of the lower chord member 5, and the lower chord member 5 and the reinforcing steel member 3; 3 are connected to each other by the plurality of connecting portions 2. Since the lower chord material 5 is reinforced by the reinforcing steel frame members 3; 3, it is possible to improve (reinforce) the compressive strength (buckling strength) of the lower chord material 5 against the force in the direction orthogonal to the paper surface of FIG. Buckling can be prevented.

補強鉄骨部材３と上板２２とを現場外で溶接しておいたものを現場に搬入しても良い。下板２０と中板２１とを現場外で溶接しておいたものを現場に搬入しても良い。上板２２と中板２１とを現場外で溶接しておいたものを現場に搬入しても良い。つまり、一方板として下板あるいは他方板としての上板が中板２１を備えた複合板により形成されたものを用いることによって、連結部２を構成する板を一方板と他方板との２つの板により構成でき、部品点数を減らせるので、連結作業が容易となる。図１に示すように、既設接骨部材１としての束材６や斜材７も下弦材５と同様の面体を備えるので、束材６や斜材７に対しても本発明の補強方法を適用でき、既設接骨部材としての束材６や斜材７の補強構造を得ることが可能である。また、例えば、既設鉄骨部材１としての断面Ｈ字形状のＨ形鋼と呼ばれる長尺鋼材により形成された図外の鉄骨柱や鉄骨梁、あるいは上述した束材や斜材や下弦材にも本発明の補強方法を適用でき、本発明の補強構造を得ることができる。理由は、Ｈ形鋼も面体を備えるからである。補強鉄骨部材３としてＬ形鋼を用いたが、Ｈ形鋼やその他の形態の部材を用いてもよい。   What welded the reinforcing steel frame member 3 and the upper board 22 outside the field may be carried in to the field. What welded the lower board 20 and the intermediate | middle board 21 out of the field may be carried in to the field. What welded the upper board 22 and the intermediate | middle board 21 out of the field may be carried in to the field. That is, by using the lower plate as the one plate or the upper plate as the other plate formed by the composite plate provided with the middle plate 21, the plates constituting the connecting portion 2 are divided into two plates, one plate and the other plate. Since it can be comprised with a board and a number of parts can be reduced, a connection operation becomes easy. As shown in FIG. 1, the bundle member 6 and the diagonal member 7 as the existing bone member 1 also have the same face body as the lower chord member 5, so that the reinforcing method of the present invention is applied to the bundle member 6 and the diagonal member 7 as well. It is possible to obtain a reinforcing structure of the bundle member 6 and the diagonal member 7 as existing bone members. In addition, for example, this is also applied to an unillustrated steel column or steel beam formed by a long steel material called an H-shaped steel having an H-shaped cross section as the existing steel member 1 or the above-described bundle material, diagonal material or lower chord material. The reinforcing method of the invention can be applied, and the reinforcing structure of the invention can be obtained. The reason is that the H-section steel also has a face piece. Although L-shaped steel is used as the reinforcing steel frame member 3, H-shaped steel or other forms of members may be used.

鉄骨建造物の補強構造を分解した斜視図（最良の形態）。The perspective view which decomposed | disassembled the reinforcement structure of the steel structure building (best form). 鉄骨建造物の補強構造を分解した断面図（最良の形態）。The sectional view which decomposed | disassembled the reinforcement structure of the steel building (best form). 鉄骨建造物の補強構造を示す断面図（最良の形態）。Sectional drawing which shows the reinforcement structure of a steel structure building (best form).

符号の説明Explanation of symbols

１ 既設鉄骨部材、２ 連結部、３ 補強鉄骨部材、
１１；１１ 下弦材を形成する長尺鋼材の横板（面体）、
１５；１５ 横板の下面（一方の面）、１６；１６ 横板の上面（他方の面）、
２０ 下板（一方板）、２１ 中板、２２ 上板（他方板）、
２６；３７ ボルト、２７；３８ ナット。 1 Existing steel member, 2 connecting part, 3 reinforced steel member,
11; 11 A long steel horizontal plate (face) that forms the lower chord material,
15; 15 The lower surface of the horizontal plate (one surface), 16; 16 The upper surface of the horizontal plate (the other surface),
20 lower plate (one plate), 21 middle plate, 22 upper plate (other plate),
26; 37 bolt, 27; 38 nut.

Claims (4)

鉄骨建造物の既設鉄骨部材の補強方法であって、既設鉄骨部材の面体の表裏面のうちの一方の面に一方板を設け、面体の両側部の端面にそれぞれ中板を設け、面体の両側部側の他方の面にそれぞれ他方板を設け、一方板と中板と他方板とで面体の両側部側における一方の面と端面と他方の面とを覆った状態で一方板と中板と他方板とをボルト及びナットによって互いに連結することによって、一方板と中板と他方板とを既設鉄骨部材の面体に固定し、さらに、他方板と補強鉄骨部材とをボルト及びナットによって互いに連結したことを特徴とする鉄骨建造物の既設鉄骨部材の補強方法。   A method for reinforcing an existing steel member of a steel structure, wherein one plate is provided on one of the front and back surfaces of the face of the existing steel member, a middle plate is provided on each end face of the face, and both sides of the face are provided. The other plate is provided on the other surface of the part side, and the one plate, the middle plate, and the other plate cover the one surface, the end surface, and the other surface on both sides of the face piece, and the one plate, the middle plate, By connecting the other plate to each other by bolts and nuts, the one plate, the middle plate and the other plate are fixed to the face body of the existing steel member, and the other plate and the reinforcing steel member are connected to each other by bolts and nuts. A method for reinforcing an existing steel member of a steel structure characterized by the above. 鉄骨建造物の既設鉄骨部材の補強構造であって、既設鉄骨部材と、補強鉄骨部材と、既設鉄骨部材と補強鉄骨部材とを連結する連結部とを備え、既設鉄骨部材が表面及び裏面を有した面体を備え、連結部が、面体の表裏面のうちの一方の面に設けられる一方板と、面体の両側部の端面にそれぞれ設けられる中板と、面体の両側部側の他方の面にそれぞれ設けられる他方板とを備え、一方板と中板と他方板とで面体の両側部側における一方の面と端面と他方の面とが覆われた状態で一方板と中板と他方板とがボルト及びナットによって互いに連結されたことによって、一方板と中板と他方板とが既設鉄骨部材の面体に固定され、他方板と補強鉄骨部材とがボルト及びナットによって互いに連結されたことを特徴とする鉄骨建造物の既設鉄骨部材の補強構造。   A structure for reinforcing an existing steel member of a steel structure, comprising an existing steel member, a reinforcing steel member, and a connecting portion for connecting the existing steel member and the reinforcing steel member, and the existing steel member has a front surface and a back surface. The connecting portion is provided on one surface of the front and back surfaces of the face plate, on the middle plate provided on each end face of the face body, and on the other surface on both sides of the face body. Each of the other plates, and the one plate, the middle plate, and the other plate are covered with the one surface, the end surface, and the other surface on both sides of the face piece. Are connected to each other by bolts and nuts, so that the one plate, the middle plate, and the other plate are fixed to the face body of the existing steel member, and the other plate and the reinforcing steel member are connected to each other by the bolt and the nut. Existing steel members of steel structures Reinforcing structure. 一方板あるいは他方板が中板を備えた複合板により形成されたことを特徴とする請求項２に記載の鉄骨建造物の既設鉄骨部材の補強構造。   The reinforcing structure for an existing steel member of a steel structure building according to claim 2, wherein the one plate or the other plate is formed of a composite plate having an intermediate plate. 既設鉄骨部材の延長方向に沿って複数の連結部が間欠的に設けられ、既設鉄骨部材と補強鉄骨部材とが複数の連結部により互いに連結されたことを特徴とする請求項２又は請求項３に記載の鉄骨建造物の既設鉄骨部材の補強構造。   The plurality of connecting portions are provided intermittently along the extending direction of the existing steel member, and the existing steel member and the reinforcing steel member are connected to each other by the plurality of connecting portions. A reinforcing structure of an existing steel member of the steel structure described in 1.
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JPH10131131A (en) * 1996-10-28 1998-05-19 Sho Bond Constr Co Ltd Method for reinforcing rivet connection beam
JPH10252141A (en) * 1997-03-17 1998-09-22 Tomoe Corp Joint construction for truss structure
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JP2000110294A (en) * 1998-10-05 2000-04-18 Nippon Steel Corp Roof structure of building
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