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本文用椭圆抛物面作为混凝土三向应力时的强度破坏面。该曲面能较好地描述和解释混凝土的数学力学特性。这一强度准则的应用仅需要两个或三个混凝土强度值,即抗压强度、抗拉强度和二向等值抗压强度;在二向等值抗压强度缺乏实验资料时也可不用。本方法的计算结果和混凝土二向、三向应力的实验研究数据符合得相当好。
In this paper, an elliptic paraboloid is used as the strength failure surface when the concrete is in triaxial stress. The curved surface can describe and explain the mathematical mechanical properties of concrete well. The application of this strength criterion requires only two or three concrete strength values, namely compressive strength, tensile strength, and bidirectional equivalent compressive strength; it is also not necessary when experimental data are lacking in the biaxial equivalent compressive strength. The calculated results of this method are in good agreement with the experimental data of concrete biaxial and triaxial stresses.