Assembly supports and hangers have been widely used in engineering,but there are few researches on their seismic performance.To investigate the failure mechanism,seismic behavior and influence factors of assembly portal supports and hangers under earthquakes,reverse cyclic loading were subjected to two different typologies of specimens to acquire the influence of seismic bracing and joint connectors on their seismic behavior.The results showed that specimens without seismic bracing were easy to fail at the right-angle or channel base connectors,specimens with seismic bracing were easy to fail at the connection of pipe hoop.The seismic performance of the joints connected by interlocking was poor,while the joints connected by bolt-through was superior.The elastic stiffness,ultimate strength,yield strength,strength and stiffness degradation,and energy dissipation of specimens with seismic bracing were better than those of the specimens without seismic bracing.The main reason affecting the seismic behavior of specimens without seismic bracing was the performance of joint connectors,while the main reason for specimens with seismic bracing was seismic connectors.The research can provide reference for the engineering application,quality inspection and standard formulation of supports and hangers.
关键词
门型支吊架/抗震斜撑/节点连接件/抗震连接件/抗震性能
Key words
portal support and hanger/seismic bracing/joint connector/seismic connector/seismic performance
维普
万方数据