圧縮を受ける円形鋼管短柱の降伏棚上での安定性に関する研究＜象の足座屈における理論と実験事実の乖離＞
キーワード:
円形鋼管短柱,塑性流れ域,象の足座屈,圧縮実験
2003 年 10 巻 39 号 p. 51-61
詳細
2003 年 10 巻 39 号 p. 51-61
Maximum stress obtained by compression test of circular steel stub-columns were compared with deformation theory and incremental stress-strain theory. Each buckling analysis has a term of tangent modules Et in its solution. Therefore these solutions mean that all specimens buckle in the plastic-flow range before strain-hardening regionregardless of its diameter-to-thickness ratio. In spite of these theories, it is shown that specimens with small diameter-to-thickness ratio can be compressed into the strain-hardening range. Furthermore the efficiency of endurance of compressive force is referred between box-section and circular section steel stub-columns.
