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过去几十年里,美国和日本都对钢梁和钢筋混凝土组合框架进行了大量的试验和参数分析。大部分试验结果显示,与传统的钢混组合框架相比较,这种组合框架的性能更优越。然而,少量研究也发现,这种由高强混凝土柱和钢梁组成的框架结构,需要一个更精确的有限元模型来进行分析。与参考文献中提出的试验数据进行对比,从而验证此有限元模型的有效性。运用此有限元模型,文中还对这种钢梁和钢筋混凝土组合框架的性能进行了广泛的参数分析,并提出一个简化的滞回模型。
Over the past few decades, both the United States and Japan have conducted extensive tests and parametric analyzes of steel beam and RC frames. Most of the test results show that, compared with the traditional steel composite frame, the performance of this combination frame is superior. However, a small number of studies have also found that the frame structure composed of high-strength concrete columns and steel beams requires a more accurate finite element model for analysis. Contrasting with the experimental data presented in the references, the validity of this finite element model was verified. Using this finite element model, the parameters of this kind of steel beam and RC frame are extensively analyzed, and a simplified hysteresis model is proposed.