本文在讨论了目前规范中正截面计算方法所存在的问题后,提出一个利用平截面假定和简化的材料应力—应变曲线,以混凝土边缘压应变ε_h来确定其内力状态的正截面计算方法。按所建议的ε_h的近似值和附加挠度的近似计算法,计算了三个单位64个长细比为9—30的构件,无论是承载能力还是挠度值与试验值相比,符合程度均较好。 After discussing the problems existing in the normal section calculation method in the current specification, this paper proposes a normal section calculation method that uses the flat section assumption and the simplified material stress-strain curve to determine the internal force state of the concrete by its edge compressive strain ε_h. According to the approximate calculation method of the proposed ε_h approximation and additional deflection, three units of 64 components with a slenderness ratio of 9-30 are calculated. Both the bearing capacity and the deflection value are in good agreement with the experimental values. .