碳纤维布加固混凝土梁时效变形分析

Analysis on Time-dependence Deformation of Concrete Beams Strengthened with CFRP Laminates

按换算截面法推导了CFRP加固混凝土梁时效变形计算公式,在此基础上编制了预测收缩、徐变变形的分析计算程序,考虑了混凝土强度等级、加载应力、配筋率的变化、混凝土开裂、混凝土收缩徐变等因素的影响,与其它计算方法比较表明,该方法能较精确预测CFRP加固混凝土梁的时效变形.

In this paper,formulas are deduced to calculate time-dependence deformation based on transformed section method,and an analytical procedure is given forecast the shrinkage and creep deformation,it considering such factors as concrete strength,stress,reinforcement ratios,concrete cracking,shrinkage and creep.The analytical method may be precise to predict and time dependment deformation of concrete beams strengthened with CFRP laminates.