Dynamic response of steel beam-columns with square hollow section: Shaking table tests of steel beam-columns subjected to biaxial bending (Part 1)

摘要

This paper first introduces the results of the shaking table tests of steel cantilever beam-columns with square hollow section subjected to uniaxial or biaxial bending by the ground motion of the sinusoidal wave, with the results of the dynamic analysis. Then discussed is the elasto-plastic dynamic response behavior of steel beam-columns failing in the local buckling, the lateral-torsional buckling and/or the cracking, focusing on the effects of the experimental parameters; width-to-thickness ratio, direction of the ground motion, and amount of mass eccentricity.%1方向入力を受ける鋼骨組や鋼柱の振動実験が従来多くなされてきたが、2方向入力の振動実験や振れ振動実験に関する研究は少ない。本研究では1方向及び2方向の正弦波加速度入力を受ける角形網管柱の振動実験を行い、解析結果との比較を行う。また局部座屈、亀裂、加振方向、質量偏心及び幅厚比が応答に与える影響について考察する。