本文讨论了确定钢筋混凝土受弯构件和偏心受压构件正截面上,混凝土压应力大小及其作用位置的方法,论证了“试配法”的优越性,并建议以试配法得出的R_W=0.8R作为规范规定值。 本文还讨论了混凝土极限压应变ε_(max),和混凝土压应力图形参数k_2,建议它们的合理取值分别为0.003和0.42。 This article discusses the method for determining the concrete compressive stress and its position on the positive section of reinforced concrete flexural members and eccentric compressive members. It demonstrates the superiority of the “test method” and suggests R_W obtained by trial fitting. = 0.8R as the specification value. The paper also discusses the ultimate compressive strain of concrete ε_(max), and the parameters k_2 of concrete compressive stress. It is recommended that their reasonable values ​​are 0.003 and 0.42, respectively.