半刚性节点钢框架内填钢筋混凝土剪力墙结构滞回性能分析

钢筋混凝土内填墙弥补了钢框架侧向刚度不足的缺点,为钢框架采用相对经济的半刚性节点提供了可能。为了研究半刚性节点钢框架内填钢筋混凝土剪力墙结构的滞回性能,在一榀循环加载模型试验的基础上,建立了非线性有限元模型,并验证了模型的有效性。考虑影响结构滞回性能的6个主要因素:节点刚度、剪力墙厚度、栓钉的设置、剪力墙的配筋、竖向荷载及混凝土强度等级,进行了6个系列22个有限元模型的变参数分析。结果表明:降低节点刚度有利于提高结构的延性和耗能能力;增加内填墙的厚度可提高结构的初始刚度和承载力;增加水平向栓钉的数量,采用普通混凝土以及合理设置暗柱、暗梁,能够有效地提高结构的整体性能,在此基础上提出了相关的抗震设计建议。

Hysteretic behavior analysis of steel frame-reinforced concrete infill wall structure with semi-rigid joints

Reinforced concrete infill walls increase the lateral stiffness of steel frames,providing the opportunity to use partially-restrained connections.In order to study seismic behavior of the steel frame-reinforced concrete infill walls,test on a two-story one bay specimen under cyclic load was conducted,along with the non-linear finite element analysis.Parametric analyses of 6 series and 22 finite element models were performed,in which 6 main influential factors including rotational stiffness of connections,wi...