軸圧縮力を受ける鋼管の塑性局部座屈耐力

概要

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The problem of the inelastic local buckling of steel circular tubes stressed beyond yield point is dealt with experimentally. Pure compression is applied on two series of stub columns, one of which consists of tubes without residual stresses, and another consists of tubes with residual stresses due to manufacturing process. Attention is paid to clarify the collapse state of tubes. Empirical formulae shown in the following were derived with reference to the current knowledge of stability in inelastic region. 1) Local buckling of tubes without residual stresses in the strain-hardening region. or [numerical formula] 2) Local buckling of tubes with residual stresses in inelastic region (following equations are applicable to the tubes with R/t less than 40). or [numerical formula] where σ_y=yield stress, ε_y=yield strain, σ_<max>=collapse stress, ε_<max>=collapse strain, R=radius of the tube, t=thickness of the tube.
社団法人日本建築学会の論文
1973-02-28