REINFORCEMENT STRUCTURE FOR EXISTING STEEL FRAME

PROBLEM TO BE SOLVED: To provide a reinforcement structure for an existing steel frame, the reinforcement structure reinforcing a connection part between a connection member and a brace of the existing steel frame in a state where heat resistance exists, without using fire such as welding.SOLUTION: A reinforcement structure 1 for an existing steel frame reinforces a connection part 62 between a connection member 59 provided at part to which the existing steel frame 55's pillar 56 and beam 57 are fixed and a brace material 58 whose end 58a is connected to the connection member. The reinforcement structure comprises: a first reinforcement member 5 formed from steel material; a first connection part 15A that connects either of the pillar or the beam, a first shaft-like member 56, with the first reinforcement member using friction junction or engaging junction; and a second connection part 15B that connects the brace material with the first reinforcement member using friction junction or engaging junction.SELECTED DRAWING: Figure 1 【課題】溶接等の火気を使用することなく、既設鉄骨における接続部材とブレースとの接続部を耐熱性を有した状態で補強する既設鉄骨の補強構造を提供する。【解決手段】既設鉄骨５５における柱５６と梁５７とが固定された部分に設けられた接続部材５９と、接続部材に端部５８ａが接続されたブレース材５８との接続部６２を補強する既設鉄骨の補強構造１であって、鋼材で形成された第一補強部材５と、柱及び梁の一方である第一軸状部材５６と第一補強部材とを、摩擦接合又は係合接合により接続している第一接続部１５Ａと、ブレース材と第一補強部材とを、摩擦接合又は係合接合により接続している第二接続部１５Ｂと、を備える。【選択図】図１