钢-混凝土组合重载柱节点抗震性能试验研究  

Experiment Research on Seismic Behavior of Joints of Heavy-load Steel-concrete Composite Columns

作　　者：温宇平[1] 王清湘[1] 

机构地区：[1]大连理工大学土木水利学院,大连116024

出　　处：《武汉理工大学学报》2010年第11期27-30,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金资助项目(50378010);高等学校博士学科点专项科研基金资助项目(20030141007)

摘　　要：钢骨-钢管混凝土组合重载柱,是一种重载柱设计的新模式,具有很高的承载力和延性。重载柱的节点设计可以有效提高结构整体防倒塌能力。对该新型组合重载柱与混凝土梁的加强环-牛腿节点进行了低周反复荷载试验,分析了节点的破坏形态、滞回曲线和延性等性能,分析了轴压比对节点延性的影响。试验结果表明,新型重载柱节点均在混凝土梁上形成塑性铰,能够耗散更多的地震能量;节点连接可靠,具有较好的受力性能和抗震能力,能够满足延性抗震设计的要求。A steel tubular column filled steel-reinforced concrete,which has both very high bearing capacity and very high ductility,is a new design model of steel-concrete composite columns.The joint design of heavy-load column is very important to prevent the collapse of buildings.Repeat low cycle loading tests are carried out on enforced ring-bracket joints between a new type of heavy-load composite column and reinforced concrete beam.The failure pattern,hysteretic curve and ductility of the joints are analysed.The axial load ratio,which influences the ductility of joints,is also discussed.The test results reveal that a plastic hinge,which can absorb more earthquake energy,is formed on the reinforced concrete beam.The test results also show that the kind of joints can efficiently transfer the internal forces of beams to columns,and has superior mechanical behaviour and seismic capacity.

关 键 词：重载柱 节点 低周反复荷载 抗震性能 延性 

分 类 号：TU398[建筑科学—结构工程]