摘要
为了研究矩形钢管混凝土柱与交错桁架穿心螺栓端板式节点抗震性能,对2个节点试件进行了低周反复荷载试验,在此基础上对节点的受力过程、破坏形态、滞回曲线、骨架曲线、延性、强度退化、刚度退化和耗能能力等抗震性能进行了较为深入的研究与分析.试验结果表明:穿芯螺栓能够有效地传递桁架拉力;试件滞回曲线呈反S形;节点具有较好的承载力、耗能性能及滞回特征;在整个加载过程中节点的刚度退化明显;随着端板厚度的增加,节点的承载力增加,延性变差;节点转动能力满足抗震性能的要求.
In order to study the seismic behavior of CFT column and truss connections with steel bolt through tubular core and end plate, two connections specimen were tested under low reversed cyclic loading. Process of test was introduced and failure pattern, hysteretic behavior, skeleton curves, ductility, strength degeneration, rigidity degeneration and energy- dissipation of connections seismic behavior were all analyzed. The result indicated that steel bolt through tubular core could transmit truss tensile force effectively, hysteresis curves of connections in the shape of ＂S＂ can provide well bearing capacity and demonstrate excellent energy-dissipation capacity. During the experiment the connections rigidity degenerate significantly. Increasing the thickness of end plate could enhance the bearing capacity of connections but its ductility be- came poor. The conections rotation capacity may meet the requirement of the seismic performance.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2012年第2期170-176,共7页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
建设部研究开发项目(2007-K2-1)
江苏省青蓝工程资助项目
关键词
钢管混凝土柱
穿芯螺栓
端板
滞回性能
试验研究
concrete-filled tubular steel column
steel bolt through tubular core
end plate
hysteretic behavior
test
