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将再生粗骨料轻质墙板内填至柔性钢框架结构中,通过对4榀单层单跨1∶3缩尺试件的拟静力试验,分析了结构的破坏模式、承载力、延性及耗能能力,研究了节点刚度对结构性能的影响及再生混凝土墙板作为主要抗侧力构件的可行性,并对结构的内力分配进行了分析。研究结果表明:再生混凝土墙板在增加结构承载力和刚度的同时,能缓解梁柱节点的转动变形,改善节点受力;内置墙板后,结构的承载力提高140%,初始刚度提高330%~360%,位移延性系数为2.44~3.28,层间位移角为0.02 rad时,承载力退化系数仍大于0.8,表明该结构具有较高的安全储备;同时,内填取代率100%再生骨料墙板的试件比普通混凝土墙板试件屈服荷载提高22%,而峰值荷载基本一致,表明墙板与柔性钢框架组合后结构的整体性能退化较小,可以作为主要抗侧力构件使用;结构中内填墙板承担的水平剪力较多时,钢框架承担的倾覆弯矩较少。
Recycled coarse aggregate lightweight wall panels were filled into the flexible steel frame structure. The pseudo-static test of 4 榀 single layer single span 1: 3 scale specimen was carried out to analyze the failure modes, bearing capacity, ductility And energy dissipation capacity, the effect of joint stiffness on the structural performance and the feasibility of regenerated concrete wallboard as the main anti-lateral component are studied. The internal force distribution of the structure is also analyzed. The results show that the recycled concrete wall panels can reduce the rotational deformation of the beam-column joints and improve the stress of the joints while increasing the bearing capacity and stiffness of the structure. After the built-in wall panels, the bearing capacity of the structure increases by 140% and the initial stiffness by 330% ~ 360%, the displacement ductility coefficient is 2.44 ~ 3.28, and the displacement angle between layers is 0.02 rad, the degradation coefficient of the bearing capacity is still greater than 0.8, indicating that the structure has a high safety margin; meanwhile, The test specimens of wall panels show a 22% increase in yield load and a peak load of common wall specimens, which shows that the combined structure of wallboard and flexible steel frame has less degradation of the overall performance and can be used as the main anti-side force member. In the structure, when the horizontal shear force of the embedded wallboard is high, the steel frame assumes less overturning moment.