繰返し軸力を受ける円形鋼管の局部座屈挙動解析に関する研究

概要

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This paper presents the method to analyze the local buckling behavior of circular tubes under cyclic loading. The relation between the axial load and the longitudinal deformation is derived by using collapse mecha-nism. This mechanism is composed of elasto-plastic hinges and elasto-plastic straight bars which are subjected to radial component of circumferential stress. The numerical results are compared with the results of stub column tests and that of axially cyclic loading tests. According to the method proposed here, the numerical results cannot exactly predict the load-deformation relationship, but can well predict the maximum strength under monotonic loading and the gradually deteriorating behavior under axially cyclic loading.
社団法人日本建築学会の論文
2001-05-30