预应力碳纤维布加固RC梁抗弯性能研究

 在目前碳纤维布和预应力碳纤维布加固混凝土梁试验研究成果的基础上，对预应力碳纤维布加固梁的抗弯性能进行分析。提出了开裂荷载和屈服荷载的计算公式。计算公式中充分考虑了混凝土的非线性关系，利用等效转化原则提出将混凝土的非线性应力图形转化为等效矩形应力图形计算。提出的公式计算值与试验值比较吻合。

Study on Bending Capacity of RC Beams Strengthened with Pre-stressed CFRP Sheets

On basis of the test results of beams strengthened with CFRP sheets or pre-stressed CFRP sheets, the paper analyses on the bending capacity of beams strengthened with pre-stressed CFRP sheets and put forward the formulas for the calculation of the cracking loads and yielding loads. With the concreteg nonlinear property being fully considered in the calculation formulas, the paper suggests that the nonlinear stress graphics should be converted into equivalent rectangular stress graphics by means of equivalent conversion principle. The results calculated in accordance with the formulas suggested in the paper are in good agreement with the test results.