単調載荷を受けるコンクリートの完全なる応力-ひずみ曲線の表示式について : 要素分布モデルを用いたコンクリートの応力-ひずみ曲線の解析その1

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In this paper, the distributed element model, which is consisting of a elastic-plastic elements with different yield and breaking strain, is applied to the expression of complete stress-strain curve for uniaxial compression of concrete. Brief of the result of this investigation was follows. (1) The following equation can be derived to express the complete stress-strain curve for uniaxial compression of concrete. S=E(x + x_y・αx^β)e^<αx^β>…(1) where, S=relative stress x=relative strain xy=relative yield strain E=Young's Modulus=[numerical formula] a=[numerical formula] Paramete β and relative yield strain xy is defined by experiment. (2) Parameter β is varied by mechanical and geometrical homogeneity, relative yield strain xy is defined by the first kink point of stress -strain curve of concrete. The complete stress-strain curve of concrete is sensitive to para-meter β and insensitive to rerative yield stra in xy. (3) The following equation is applied to the practical expression of complete stress-strain curve of concrete. S=Exe^<-αx^β>…(2) (4) When parameter β=1, equation (1) and (2) is equal to Smith & Young's eouation.
社団法人日本建築学会の論文
1986-07-30