補剛材剛比がコンクリート充填鋼製橋脚の挙動に及ぼす影響

抄録

This study presents the behaviour of a concrete-filled steel box column under the cyclic load. The concrete-filled tube (CFT) are often used in civil structures and highrisebuildings. Although many studies on the CFT has been made focusing on the ultimate strength, ductility and optimal filled-in concrete depth, few studies have considered the rigidity of stiffener in the CFT. In this study, the numerical analysis of the concrete-filled steel box column with the stiffener under the cyclic load was performed in order to clear the influence of the rigidity of stiffener on the column behaviour. We found the rigidity of stiffener affects to the behaviour of the concrete-filled steel box column such as deformation shape, contact pressure.