高強度鉄筋SD50を用いた鉄筋コンクリート梁・柱断面の曲げ解析

概要

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The load-flexural deflection and the moment-flexural deflection relationships in test length of concrete beams and columns reinforced with high strength steel Grade SD 50 bars were studied analytically and compared with past test results. The analytical stress-strain curves for steel have been proposed on the experimental results of Grade SD 50 bars under alternatedly repeated loading. In this study, following conclusions were obtained. (1) The stress-strain curve proposed for steel seems to express experimental results of Grade SD 50 bars under alternatedly repeated loading. (2) For analysis of beam and column sections under monotonic loading, the overall strength and the stiffness, up to the maximum load seem to pursue the experimental results very well. But the analyses of column sections under large axial loading after maximum load were not in agreement with experimental results. (3) For analysis of beam and column sections under alternatedly repeated loading, the moment-flexural deflection relationships seem to pursue overall experimental results. Particulary, the assumptions of stress-strain curve for steel, that is, stiffness of strain hardening is E_s/50 and stiffness of unloading is E_s, seemed to be reasonable.
一般社団法人日本建築学会の論文
1989-01-30