コンクリート充填角形鋼管柱・鉄骨梁接合部局部の弾塑性性状に関する研究

－長締め及び短締めボルト併用接合部の荷重-変形関係モデル－

抄録

This paper proposes a simple model of a load-displacement relation for predicting the local tensile elasto-plastic behavior of moment connections between concrete filled square steel tube columns and steel beams using split-tee connections with both long-through and tensile-type bolts. This model is developed by superposing the load-deformation relations of steel tube, these bolts and split-tees in the connections. The tube flange and split-tee are modeled as beam elements with tetra-linear load-deformation relation, while the tube web and these bolts are modeled as tension members with tetra-linear or tri-linear load-deformation relation. This research verifies the analytical model by comparison with experiment results. The analytical results approximately reproduce the experimental results up to large deformations.