邓宗才
    （山东建材学院  济南 250022）

[提要]  碳纤维混凝土是一种弹塑性材料，其力学行为与加载历史有关。对碳纤维混凝土棱柱体试件作了低周重复加、卸载试验，通过试验测试及变形参数研究，提出了碳纤维混凝土重复加、卸载应力  应变曲线方程及残余塑性变形的计算公式。这些数学表达式可根据材料特性进行调整，具有较广泛的适用性。
[关键词]  碳纤维混凝土  重复加、卸载  应力  应变关系

The mechanical behavior of carbon fiber reinforced concrete dominantly depends on its load history. Through parametric study and experimental investigation, the model of stress-strain and the formula of residual plastic deformation under repeated load are proposed. The presented model is initiated to provide flexibility mathematical expressions which can be changed according to the materials properties.
Keywords:  carbon fiber reinforced concrete; repeated loading; stress-strain relationship