中文摘要：

通过4榀1∶2比例的高强钢筋混凝土框架低周反复加载试验,研究试验框架的破坏机制、破坏过程、滞回曲线、骨架曲线、位移延性、刚度退化和耗能等抗震性能,并对不同强度钢筋（500MPa和400MPa）、不同轴压比、不同截面尺寸的框架抗震性能进行对比分析,对骨架曲线进行了理论模拟,给出性能状态界限的建议值。研究表明,500MPa框架滞回曲线饱满呈梭形,有良好的耗能能力;破坏过程与400MPa钢筋框架的破坏过程相同,破坏机制仍为＂强柱弱梁＂;最大承载力高于400MPa框架,耗能能力略高于400MPa框架,延性系数低于400MPa框架。试验和理论的骨架曲线基本一致。轴压比变化（0.15-0.3）对屈服后的骨架曲线和延性系数略有影响。加大截面尺寸大,可提高最大承载力、刚度和耗能能力。采用位移角限值标定500MPa钢筋混凝土框架的抗震性能状态是合理的,可用于抗震性能化设计。

英文摘要：

Four pieces of 1 ： 2-scale high-strength reinforced concrete frame were tested under low-cycle repeated loading to study the seismic behaviors of high-strength reinforced concrete frame such as its failure mechanism, failure process, hysteretic curves, skeleton curves, displacement ductility, stiffness degradation and energy dissipation. The seismic behaviors of frames are compared and analyzed with different steel strength （400MPa and 500MPa） , axial compression ratio and section sizes. Furthermore, the limitation values of performance and the theoretical simulations of the skeleton curves are investingated. Research results show that the be plump and fusiform, and the frame exhibits a good pe damage process of 500MPa reinforced concrete frame is hysteretic curves of 500MPa reinforced concrete frame appear to rformance in energy dissipation. Apart from these behaviors, the identical to that of reinforced concrete frame with 400MPa steel bar, and its failure mechanism still can be classified as the failure mechanism of strong column and weak beam. Compared with the reinforced concrete frame with 400MPa steel bars, the reinforced concrete frame with 500MPa steel bars has a larger maximum bearing capacity , a slightly better capacity in energy dissipation, and a smaller ductility factor, and their theoretical skeleton curves basically conform with the experimental curves. The variation of axial compression ratio （from 0. 15 to 0.3 ） may slightly affect the post yielding skeleton curve and the ductility factor. Enlarging the section sizes may improve the maximum bearing capacity, the stiffness and the energy dissipation capability of reinforced concrete frame. Hence, in the performance-based seismic design, it is reasonable to use the allowable story drift ratio to demarcate the seismic performance of 500MPa reinforced concrete frame.