繰返し荷重をうける鉄骨断面の弾塑性解析に関する研究 (第 5 報)

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In this paper, author analyzed rectanguler section subjected to constant bending moment and alternative axial forces, using the method descrived in the preceding paper (See part 1-4). Cases when the axial forces were unloaded at the elasto-plastic state (2), an incremental collapse phenomenon will occure, causing gradual increasing of bending curvature. As mentioned above, author propose "A hypothesis of Shake-Down Load", in cases of symmetrical sections subjected alternative loads. Then, in order to determine the differences due to the loading sequence, author analyzed the following cases; 12.1 Proportional loads. 12.2 Cases when bending moment is applied after the application of axial forces. 12.3 Cases when axial forces are applied after the application of bending moment, when the bending is within the elastic range. 12.4 Cases when axial forces are applied after the application of a bending moment, when the bending is in elasto-plastic range. The same results are obtained for 12.1, 12.2 and 12.3, but the results for 12.4 do not show correspondence because elasto-plastic antecedents are aplied by bendings.
社団法人日本建築学会の論文
1967-03-30