A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR REPAIRING AND REINFORCING STEEL STRUCTURE
PROBLEM TO BE SOLVED: To provide a method for repairing and reinforcing a steel structure in which a fiber sheet is bonded using an elastic putty material of high extensibility, and peeling of the fiber sheet may be prevented and the load transfer efficiency from the fiber sheet to steel members does not decline even at times of high stress and buckling deformation.SOLUTION: In a process (a) for surface preparation of a part on a steel member 10 to be worked, a process (b) for forming a putty layer (an elastic layer) 30 on the surface-prepared steel member 10 using a polyurea resin putty 30A, which is a putty material of high extensibility, and a process (c) for forming a plurality of fiber-reinforced resin layers 20 (20-1, 20-2, ...20-n) by laminating a plurality (n) of layers of fiber sheets 1a on the putty layer by bonding with a resin, the number of laminated fiber sheet layers (n) is determined to satisfy the following equation (1).
【課題】高伸度弾性パテ材を介して繊維シートを接着し、高応力時や座屈変形時においても繊維シートの剥離を防止でき、繊維シートから鋼部材への荷重伝達効率が低減しない鋼構造物の補修補強方法を提供する。【解決手段】（ａ）鋼部材１０における施工対象部分に対して下地処理する工程と、（ｂ）下地処理された鋼部材１０の表面に高伸度弾性パテ材であるポリウレア樹脂パテ材３０Ａによりパテ層（弾性層）３０を形成する工程と、（ｃ）パテ層の上に、複数（ｎ）層の繊維シート１ａを樹脂で接着して積層し、複数層の繊維強化樹脂層２０（２０−１、２０−２、・・・２０−ｎ）を形成する工程において、繊維シートの積層数（ｎ）は、下記式（１）を満足するように決定される。【選択図】図１４
METHOD FOR REPAIRING AND REINFORCING STEEL STRUCTURE
PROBLEM TO BE SOLVED: To provide a method for repairing and reinforcing a steel structure in which a fiber sheet is bonded using an elastic putty material of high extensibility, and peeling of the fiber sheet may be prevented and the load transfer efficiency from the fiber sheet to steel members does not decline even at times of high stress and buckling deformation.SOLUTION: In a process (a) for surface preparation of a part on a steel member 10 to be worked, a process (b) for forming a putty layer (an elastic layer) 30 on the surface-prepared steel member 10 using a polyurea resin putty 30A, which is a putty material of high extensibility, and a process (c) for forming a plurality of fiber-reinforced resin layers 20 (20-1, 20-2, ...20-n) by laminating a plurality (n) of layers of fiber sheets 1a on the putty layer by bonding with a resin, the number of laminated fiber sheet layers (n) is determined to satisfy the following equation (1).
【課題】高伸度弾性パテ材を介して繊維シートを接着し、高応力時や座屈変形時においても繊維シートの剥離を防止でき、繊維シートから鋼部材への荷重伝達効率が低減しない鋼構造物の補修補強方法を提供する。【解決手段】（ａ）鋼部材１０における施工対象部分に対して下地処理する工程と、（ｂ）下地処理された鋼部材１０の表面に高伸度弾性パテ材であるポリウレア樹脂パテ材３０Ａによりパテ層（弾性層）３０を形成する工程と、（ｃ）パテ層の上に、複数（ｎ）層の繊維シート１ａを樹脂で接着して積層し、複数層の繊維強化樹脂層２０（２０−１、２０−２、・・・２０−ｎ）を形成する工程において、繊維シートの積層数（ｎ）は、下記式（１）を満足するように決定される。【選択図】図１４
METHOD FOR REPAIRING AND REINFORCING STEEL STRUCTURE
鋼構造物の補修補強方法
MIYASHITA TAKESHI (author) / NAGAI MASATSUGU (author) / OKUYAMA YUSUKE (author) / AOKI KEIICHI (author) / WAKABAYASHI MASARU (author) / OGAKI KAZUO (author) / KOIDE NOBUO (author) / KOBAYASHI AKIRA (author) / KOMORI ATSUYA (author) / HIDEKUMA YUYA (author)
2015-07-06
Patent
Electronic Resource
Japanese
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