ブレース付きCFT構造ラーメンの柱梁接合部における鋼管とコンクリートの応力伝達能力

概要

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With regard to moment-resistant frames installed by diagonal braces, the strong axial force is introduced into a column from diagonal braces at a beam-to-column connection. When the column is made of CFT (concrete-filled steel tube), the axial force firstly transferred to the steel tubular portion should transfer to the filled concrete in order to expect the composite action as a CFT. Two types of stress transfer mechanisms may be available in CFT columns. The one is the concrete bond to steel tube, and the other is a mechanical shear key functioned by the cut-through diaphragm for beam-to-column connections. The paper demonstrates the stress transfer capacity by a test of a realistic connection composed of a H-shaped beam, a CFT column and a diagonal brace.
2006-04-30