论文部分内容阅读
为了研究矩形钢管混凝土梁在框架结构中的受力性能,并进一步分析全矩形钢管混凝土框架结构的抗震性能,对竖向荷载和低周反复水平荷载作用下的两榀单跨两层矩形钢管混凝土框架模型进行了抗震性能试验研究。以柱含钢率为变化参数,研究分析了矩形钢管混凝土框架结构的破坏机制、滞回特征、延性、强度及刚度退化等性能。结果表明:与钢筋混凝土、钢结构框架相比较,矩形钢管混凝土框架结构具有承载力高、耗能能力强、强度退化不明显、延性性能好等优点。由此可以推断:矩形钢管混凝土框架结构在承载力、抗震性能以及材料利用等方面有较多的优越性,有进一步研究和推广应用的价值。
In order to study the behavior of rectangular CFST beams in frame structure and to further analyze the seismic behavior of CFRF, the effect of vertical load and low-cycle repeated horizontal load on two layers of single-span concrete filled steel tube The frame model was tested on the seismic performance. Taking the column steel content as a parameter, the failure mechanism, hysteresis characteristics, ductility, strength and stiffness degradation of rectangular CFST frame structure were analyzed. The results show that compared with reinforced concrete and steel frame, the rectangular CFST frame structure has the advantages of high bearing capacity, strong energy dissipation capacity, insignificant strength degradation and good ductility. It can be inferred that: the rectangular CFST framework has more advantages in bearing capacity, seismic performance and material utilization, etc., and has the value of further research and popularization and application.