碳纤维布增强钢筋混凝土柱延性性能的评估与分析

在试验研究的基础上，对碳纤维布提高钢筋混凝土柱延性的机理进行了分析，确定了碳纤维布用量、轴压比、剪跨比、矩形截面柱转角部位的形状等试验因素对碳纤维布加固钢筋混凝土柱延性的影响规律。在此基础上，重点对碳纤维布加固钢筋混凝土柱延性性能的评估与分析方法进行了研究，提出了碳纤维布加固矩形截面钢筋混凝土柱位移延性比的理论计算方法和简化计算公式。计算结果与试验数据能较好地吻合。工程技术人员可以应用上述方法，对碳纤维布增强钢筋混凝土柱延性性能进行合理的评估与分析。

Evaluation on ductility of reinforced concrete columns strengthened with carbon fiber sheet

Based on the test results of fifteen reinforced concrete columns strengthened with continuous carbon fiber sheet (CFS) under cyclic loading, the factors affecting the ductility of the specimens are summarized. The confinement mechanism of CFS for reinforced concrete columns is discussed. Then the evaluation on the ductility of reinforced concrete columns strengthened with CFS is studied. A theoretical analysis method, based on the computer program, is presented to calculate and evaluate the displacement ductility of reinforced concrete columns with CFS. In order to meet the engineering requirements, a simplified method is also proposed. The calculating results with above two methods agree well with the test results. Both methods can be used to evaluate the ductility of reinforced concrete columns strengthened with CFS.