对碳纤维布加固混凝土构件进行了非线性有限元分析 ,分析中考虑了混凝土开裂后切向刚度的折减 ,以及钢筋与混凝土、碳纤维布与混凝土的联结滑移的影响。通过实例对比分析表明 ,运用该方法计算的结果与试验分析结果非常接近 ,可在一定程度上有效替代试验分析方法 ,从而减少试验所需的时间和费用。

Nonlinear Finite Element Analysis on Reinforced Concrete Beams Strengthened with CFRP Wei Wenhui Zhuo BoThe RC members strengthened with externally bonded carbon fiber sheets are studied with nonlinear finite element analysis method. The discount of the tangential stiffness due to crack propagation in concrete is taken into account. In addition, the slip behavior of the sheet-to-concrete bonded joints and the steel-to-concrete joints is considered. It's shown that the predicted values by this analysis method have a close agreement with the experimental observations. So, this method is feasible and available in practical application, which can greatly reduce labour cost and other cost compared with experimental analysis method.fiber sheets; reinforced concrete; nonlinear finite element