摘要
根据加固结构碳纤维布 ( CFRP)应变滞后的特点 ,提出了考虑二次受力时碳纤维布加固混凝土构件非线性有限元分析。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、CFRP与混凝土的联结滑移的影响。通过实例对比分析表明 ,理论计算值与试验结果吻合较好 。
According to the lag characteristic of the carbon fiber, the RC members strengthened with externally bonded carbon fiber sheets are studied with nonlinear finite element analysis method when considering the effect reforcing. 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 are 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.
出处
《武汉理工大学学报》
CAS
CSCD
2003年第9期43-45,共3页
Journal of Wuhan University of Technology
关键词
碳纤维布
混凝土
非线性有限元
carbon fiber sheets
reinforced concrete
nonlinear finite element
