钢纤维混凝土内时损伤本构模型

本文在作者建立的普通混凝土内时损伤构型的基础上，引入纤维含量特征参数对损伤变量影响的系数。建立了钢纤维混凝土的内时损伤本构模型，该模型的特点是：把内时理论与损伤力学相结合，摆脱了古典塑性力学中屈服面的概念，又使模型中的参数和基本方程大大减少；考虑了不同纤维含量特征参数对本构模型的影响；使钢纤维混凝土和普通混凝土间的本构模型有机地联系在一起，便于应用。

Endochronic damage constitutive model for steel fiber reinforced concrete

Based on the endochronic damage constitutive model for concrete proposed by the authors and introducing fiber content coefficients affecting on damage variables, an endochronic damage constitutive model of steel fiber reinforced concrete (SFRC) is proposed. The model combines endochronic theory with damage mechanics and does not need the concept of yield surface. The effect of steel fiber content on the constitutive model is to be concerned. The model possesses form as that of normal concrete so that it is easy to apply.