【摘要】 为研究复合焊接环式箍筋混凝土柱-蜂窝钢梁组合节点的受力性能。对四种不同连接形式的8个复合焊接环式箍筋混凝土柱-蜂窝钢梁组合节点试件进行了低周反复荷载作用下的拟静力试验,分析了各节点的破坏形态、承载力、受剪性能、延性、耗能性能、滞回特性等。试验结果表明:试件的承载力与节点核心区的配箍率有关,对于钢梁贯通型的梁柱节点,宜加强节点核心区的箍筋配置,有利于提高试件的承载力和延性;外伸式端板连接型试件的承载力最高,但在极限荷载之后出现严重的刚度退化,耗能能力差;核心区加设箍筋的钢梁贯通型试件的承载力、延性和耗能能力均比较好,抗震性能好,能够满足工程实践的要求。更多还原

【Abstract】 This paper presents research on loading behavior of welded compound-ring-hoop concrete column and honeycombed steel beam composite joints.Eight specimens of welded compound-ring-hoop concrete column and honeycombed steel beam composite joints,designed in 4 different types of connection,were studied through the pseudo-static tests under low cyclic loading.The failure modes,loading capacity,shear behavior,ductility,energy dissipation ability and hysteretic characteristics of the joints were analyzed.The results showed that the loading capacity of specimens is related to stirrup ratio in joint core area.For steel beam-through joint,stirrup ratio in joint core area should be increased,which can result in increased loading capacity and ductility of specimens.The test showed that the loading capacity of extended-end-plate connections was the highest,but their stiffness degraded seriously after ultimate load and their energy dissipation capacity was poor.The loading capacity,ductility and energy dissipation capacity of the steel beam-through joints with layout of stirrups in joint core area were all favorable,and their seismic behaviors were good enough to meet the requirement in engineering practice.更多还原