粘钢加固混凝土构件非线性有限元分析

Nonlinear finite element analysis of reinforced concrete beams strengthened with stick steel plates

对粘钢加固混凝土构件进行了非线性有限元分析,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、粘钢与混凝土的联结滑移的影响。通过实例对比分析表明,运用该方法得到的计算结果与试验分析结果非常接近,可有效替代试验分析方法。

The RC members strengthened with externally stick steel plates are studied with nonlinear finite element 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.