复合墙板与钢框架的连接节点抗震试验研究

EXPERIMENTAL STUDY ON SEISMIC TEST OF CONNECTIONS OF STEEL FRAMES AND SANDWICH COMPOSITE PANELS

带复合墙板钢框架结构体系在钢结构住宅中得到了广泛的应用,墙板与钢框架的连接节点对这种结构体系抗震性能有重要的影响。为研究连接节点的受力机理及破坏模式,对五榀带复合墙板钢框架结构试件进行水平反复荷载作用下的试验研究,系统对比连接节点骨架曲线与整体结构骨架曲线,分析墙板、节点预埋件、钢丝、混凝土的应力-应变曲线。试验结果表明:该节点有良好的承载力并能实现墙板与钢框架安全有效的连接,预埋件保证了钢框架与墙板之间的协同作用,斜向交叉钢板的设置提高了整体框架以及节点的极限承载力,改善了墙板与钢框架的协同作用。

Steel frame structures with sandwich composite panels(SCPs) have been widely applied in engineering practice. Connections between the steel frames and SCPs impose significant influence on the seismic behavior of the entire structure system. To investigate the failure modes and force mechanisms of the connections, five one-bay steel frames with SCPs were tested under cyclic loads. The skeleton curves of the connections and the entire structure were compared in order to analysis the stress strain curves of panels, embedded parts, steel wire and concrete. Results show that the connections have sufficient bearing capacity and provide effective connection to the steel frames and panels; the embedded parts ensure the synergy between the steel frames and panels, and the oblique cross steel plates improve the ultimate bearing capacity of the entire frame and the connections and the synergy between the steel frames and panels. This study lays a solid foundation for the engineering application of structure systems of this kind.