H形鋼梁の塑性変形性能に及ぼす端部境界条件及び応力状態の影響に関する研究

Abstract

This study considers the influence which a plastic hinge position and rotation capacity affect the plastic deformation capacity of a beam. The position and rotation capacity of plastic hinge are changed according to beam end boundary condition. It is shown clearly that the plastic hinge is formed in position separated from the bending stress reduction domain, and the rotation capacity of plastic hinge is influenced by web local buckling strength. Finally, the plastic deformation capacity and maximum load of beam are estimated by the position of plastic hinge and the ratio of shear stress to bending stress.