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A platform for research: civil engineering, architecture and urbanism
FIREPROOF REINFORCING STRUCTURE
To provide a fireproof reinforcing structure sufficiently reinforcing fire resistance of a steel frame to which an existing fireproof coating layer is applied.SOLUTION: A fireproof reinforcing structure 1 for reinforcing fire resistance of a steel frame 3 having an existing fireproof coating layer 5 applied on a surface thereof is installed outside the existing fireproof coating layer 5 so as to cover at least a lower surface of a lower flange 15 of an H-steel constituting the steel frame 3, and comprises: a first sheet S1 comprising a foamable fireproof material 23 having a foamed layer 19 containing a foamed material and foamed by heating and a backing layer 21 backing the foamed layer 19; and a second sheet S2 disposed outside the first sheet S1 so as to cover at least the lower surface of the lower flange 15 of the H-steel. The second sheet S2 has a support layer for supporting the first sheet S1 in a state in which the foamed layer is foamed at heating without containing the foamed material.SELECTED DRAWING: Figure 1
【課題】本発明は、既存の耐火被覆層が施された鉄骨の耐火性を十分に補強する耐火補強構造を提供することを目的とする。【解決手段】耐火補強構造１は、既存の耐火被覆層５が表面に施された鉄骨３の耐火性を補強する耐火補強構造であって、鉄骨３を構成するＨ鋼の少なくとも下フランジ１５の下面を覆うように既存の耐火被覆層５の外側に設置され、発泡材を含み加熱によって発泡する発泡層１９と発泡層１９を裏打ちする裏打層２１とを有する発泡性耐火材２３からなる第１シートＳ１と、Ｈ鋼の少なくとも下フランジ１５の下面を覆うように第１シートＳ１の外側に設置された第２シートＳ２と、を備え、第２シートＳ２は、発泡材を含まず加熱時において発泡層が発泡した状態の第１シートＳ１を支持する支持層を有する。【選択図】図１
FIREPROOF REINFORCING STRUCTURE
To provide a fireproof reinforcing structure sufficiently reinforcing fire resistance of a steel frame to which an existing fireproof coating layer is applied.SOLUTION: A fireproof reinforcing structure 1 for reinforcing fire resistance of a steel frame 3 having an existing fireproof coating layer 5 applied on a surface thereof is installed outside the existing fireproof coating layer 5 so as to cover at least a lower surface of a lower flange 15 of an H-steel constituting the steel frame 3, and comprises: a first sheet S1 comprising a foamable fireproof material 23 having a foamed layer 19 containing a foamed material and foamed by heating and a backing layer 21 backing the foamed layer 19; and a second sheet S2 disposed outside the first sheet S1 so as to cover at least the lower surface of the lower flange 15 of the H-steel. The second sheet S2 has a support layer for supporting the first sheet S1 in a state in which the foamed layer is foamed at heating without containing the foamed material.SELECTED DRAWING: Figure 1
【課題】本発明は、既存の耐火被覆層が施された鉄骨の耐火性を十分に補強する耐火補強構造を提供することを目的とする。【解決手段】耐火補強構造１は、既存の耐火被覆層５が表面に施された鉄骨３の耐火性を補強する耐火補強構造であって、鉄骨３を構成するＨ鋼の少なくとも下フランジ１５の下面を覆うように既存の耐火被覆層５の外側に設置され、発泡材を含み加熱によって発泡する発泡層１９と発泡層１９を裏打ちする裏打層２１とを有する発泡性耐火材２３からなる第１シートＳ１と、Ｈ鋼の少なくとも下フランジ１５の下面を覆うように第１シートＳ１の外側に設置された第２シートＳ２と、を備え、第２シートＳ２は、発泡材を含まず加熱時において発泡層が発泡した状態の第１シートＳ１を支持する支持層を有する。【選択図】図１
FIREPROOF REINFORCING STRUCTURE
耐火補強構造
KAKAE NORICHIKA (author) / MIYAMOTO KEIICHI (author)
2020-09-17
Patent
Electronic Resource
Japanese
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