HDPF加固钢筋混凝土柱抗震性能试验研究

为了研究高延性聚酯纤维加固钢筋混凝土柱的抗震性能，共进行了7根柱的低周反复试验，其中，3根在未加固状态下进行试验，4根柱粘贴高延性聚酯纤维加固后进行试验，针对位移延性系数、等效粘滞阻尼系数、总耗能、承载力和纤维带的应变进行了研究与分析。研究结果表明：未加固柱的承载力、耗能能力和延性都比较低，采用高延性聚酯纤维加固后的试件裂缝发展缓慢，加固后柱的承载能力、耗能能力、延性均有不同程度地提高；在塑性铰区域内增加局部配筋，能够提高纤维布的约束效果。

Seismic behavior of reinforced concrete column strengthened with HDPF

Seven RC columns were tested under cyclic lateral load and constant axial load to study the seismic behavior of reinforced concrete column strengthened with high ductility polyester fiber. Three unreinforced columns were tested, and four other columns were tested after strengthened with high ductility polyester fiber sheets. The bearing capacity of three unreinforced columns was low. And the energy dissipation capacity and ductility were also relatively low. The cracks of reinforced specimen appeared relatively late and the cracks developed slowly. The strength, ductility and energy dissipating capacity of the retrofitted columns were improved at different degrees. And the ductility increase was more obvious. The efficiency of the use of fiber cloth can be improved through adopting the measures of improving the reinforcement ratio the plastic hinge region and adopting the measures of improving the length of longitudinal reinforcement, and the seismic behavior of RC column strengthened with high ductility polyester fiber increased.