日本建築学会構造系論文集
Online ISSN : 1881-8153
Print ISSN : 1340-4202
ISSN-L : 1340-4202
交番繰り返し軸力作用下で連成座屈を生じるH形鋼梁の塑性変形性能
鈴木 敦詞木村 祥裕笠井 和彦
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2018 年 83 巻 744 号 p. 297-307

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H-shaped beam installed in a braced structure are subjected to reversed axial force during the earthquake. In the previous paper, the evaluation index and formulae for beams collapse with dominant local buckling are reported. In this paper, additional experiments and numerical analyses are carried out to clarify the influences of combined (local and lateral) buckling for the ultimate strength, plastic deformation capacity, and cumulative plastic deformation capacity. Based on the obtained results, the new evaluation index and formulae are proposed here. Finally, the applicability of the previous equation of Bauschinger effect coefficient is investigated to calculate the hysteresic energy absorption.

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