中文摘要：

预应力钢带加固技术是一种新型加固技术,采用预应力钢带加固技术对钢筋混凝土框架梁端、柱端和节点核心区进行约束加固,可以有效提高钢筋混凝土框架结构抗震性能。对一榀采用预应力钢带加固的1/2比例的单跨三层钢筋混凝土框架试件进行低周反复加载拟静力试验,结合试验研究结果,对预应力钢带加固钢筋混凝土框架试件的破坏形态、荷载-位移滞回曲线、骨架曲线、层间位移角、位移延性系数、耗能性能和刚度退化等抗震性能进行了深入分析。研究结果表明,试件最大层间弹塑性位移角可以达到1/28.8,预应力钢带加固钢筋混凝土结构具有良好的延性和耗能性能,是一种切实可行、效果良好的抗震加固技术。

英文摘要：

In order to improve the seismic behavior of reinforced concrete frames, a new retrofitting method using pre-stressed steel strips to strengthen both the ends of the beams and columns as well as the core areas of the joints was presented. A low cyclic reversed loading was applied at the top of the reinforced concrete frame with single-span and three-story, scaled 1/2, to investigate the seismic behavior of the specimens strengthened with pre-stressed steel strips. Based on the test results, the seismic behavior such as the final failure models, hysteretic curves, skeleton curves, inter-story drift ratio, displacement ductility coefficient, energy dissipation capacity and stiffness degradation, etc, of the specimen were fully analyzed. Test results show that the hysteretic curves of the specimen retrofitted by pre-stressed steel strips is plump, indicating the energy dissipation behavior of the specimen is favorable. The elastic-plastic deformation capacity of the strengthened specimen is also perfect with the maximum inter-story drift ratio of 1/28.8.