【摘要】 该文通过6榀1/3缩尺的两层单跨梁柱四角钢连接钢框架内填钢筋混凝土剪力墙结构(简称PSRCW)试件模型的低周反复荷载试验,研究了PSRCW结构的传力机理及破坏模式,分析了PSRCW结构的滞回性能、刚度退化、变形及延性性能、耗能能力以及内力分配关系等。研究结果表明:PSRCW结构具有较高的承载力和较大的抗侧移刚度,耗能能力一般。设计荷载水平,与钢梁相连抗剪连接件分担约80%的水平剪力,钢框架分担约70%倾覆力矩。抗剪连接件在拉剪耦合受力状态下易发生低周疲劳破坏,改善抗剪连接件的性能是提高PSRCW结构延性的关键。更多还原

【Abstract】 The purpose of this study was to experimentally investigate the behavior of a partially-restrained steel frame with RC walls with top-and seat-angle with double web-angle connections (PSRCW) under cyclic lateral loads. A total of six 1/3 scaled one bay, and two story test specimens were built and tested. The hysteretic behavior, stiffness degradation, plastic deformation capacity, ductility and energy dissipation capacity, force transmission and failure modes were analyzed in detail. The results indicate that PSRCW shows large stiffness and lateral strength, while it shows moderate energy dissipation capacity. At the design load level, the shear connected connected with steel beam resist about 80% of the total lateral load, and steel frame resists approximately 70% of the overturning moment. Shear connectors subjected to combined cyclic shear and tension forces would induce low cyclic fatigue; the performance improvement of shear connectors would increase the ductility of PSRCW.更多还原