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増厚補強型柱梁接合部の弾塑性挙動と設計法

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川崎製鉄技報

KAWASAKI STEEL GIHO Vol.27 (1995) No.4

増厚補強型柱梁接合部の弾塑性挙動と設計法

Elastic-Plastic Behaviour and Design of Beam-to-Column Connections Reinforced by Increasing Thickness of Columns

村上 行夫(Yukio Murakami) 金子 忠男(Tadao Kaneko) 要旨 : 冷間成形角形鋼管柱とH形鋼梁接合部において,水平ダイアフラムを省略した増厚補強形 式の柱梁接合部の実挙動と設計法について検討した。十字形部分架構モデルによる実大構 造実験によって,以下の成果が得られた。(1)増厚補強型柱梁接合部は安定した復元力特 性と十分な変形性能を示す。(2)接合部の局部降伏耐力は降伏線理論によって予測が可能。 (3)増厚部の長さは降伏線理論によって計算される降伏線の距離以上とする。また,F EM弾塑性バラメータ解析により,設計資料としての梁端の回転剛性評価式を提案した。 Synopsis :

With regard to connections of cold-formed square tube and beam, behavior and design of the connection reinforced by increasing thickness of column have been investigated. Sub-assemblage tests were carried out under cyclic loadings. Test results show that the connection can absorb sufficient seismic energy and that yield strengths predicted by yield line theory agree well with experimentals. Parametric study using FE method as succeeded in obtaining empirical formulae and made it possible to estimate rotational rigidity of the connection.

(c)JFE Steel Corporation, 2003

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