中低層鋼骨組の耐震性に与える柱-はり接合部のせん断補強の効果について : その 2 パネルゾーンせん断強度が異なる骨組の動的弾塑性応答性状

概要

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One important problem concerned with an aseismic design of frame is to avoid damage concentration into a weak story in the frame during earthquake ground motions. The effect of shear strength of beam-to-column connections on the elasto-plastic response behavior, especially on the damage concentration, of low-rise steel frame is investigated herein. Some results are : (1) Plastic strain energy distribution absorbed, or damage distribution, in frame with shear stiffening connections based on the current design formula strongly depends on the distribution of story-shear strength of the frame. (2) Story-story coupling effects due to the shear plastification of beam-to-column connections in weak-panel frame, which have panel-column yielding ratio smaller than about 0.4, produce good distribution of maximum story displacement in the frame. (3) Independently of story-shear strength distribution in frame, damage concentration into weak stories in weak-panel frame, such as with no-shear stiffening connections, can be effectively avoided by story-story coupling effects.
社団法人日本建築学会の論文
1983-12-30