新型自复位钢框架-复合墙连接节点研究

Research on new self⁃centering connection joint of steel frame⁃composite wall

内填RC复合墙钢框架结构在框架与内嵌墙之间设置开缝并安装耗能连接件能减小结构损伤,改善结构力学性能。提出在内填RC复合墙和钢框架结构之间采用新型折板型耗能连接件,并采用ABAQUS对连接件的受力性能进行分析,研究了节点的受力过程和破坏模式。将耗能连接件应用于两侧开缝的密肋复合墙-钢框架结构中实现滑移连接。结果显示:折板连接件在竖向拉压荷载和水平侧向荷载作用下的变形损伤模式存在差异,折板角和折板弯折数目对连接件受力性能影响显著。折板连接件用于结构中时,结构加载前期滞回曲线表现出残余变形小的特点,具有自复位性能,因此折板连接件是一种具有自复位能力的连接形式。

Reinforced concrete composite wall infilled steel frame with side slits and energy dissipation connectors between infill wall and frame members can reduce the damage of the structure and improve the mechanical property.A new type of folded⁃plate energy⁃dissipating connector between RC composite wall and steel frame was proposed,and ABAQUS was used to analyze the mechanical property of the connector,and the stress process and failure mode of the connector were studied.The application of energy⁃dissipating connectors in slotted multi⁃ribbed composite walls with steel frames enables slip connections on both sides.The results indicate that the deformation and damage patterns of folded⁃plate connectors differ under vertical tensile⁃compressive loads and horizontal lateral loads.The angles and the number of folds significantly impact the mechanical property of these connectors.When integrated into structures,folded⁃plate connectors exhibit characteristics of minimal residual deformation in the early loading stages,showcasing self⁃centering capabilities.Hence,folded⁃plate connectors represent a type of connector possessing self⁃centering capabilities when employed within structural frameworks.