摘要
建立了钢管混凝土框架结构的三维非线性有限元分析模型,通过与在低周反复荷载作用下的方钢管混凝土框架结构试验所得的滞回曲线进行对比,可见该模型的计算结果较为精确,可以应用于框架的结构分析中.利用此模型对在低周反复荷载作用下的柱轴压比不同的钢管混凝土框架结构进行有限元分析,对比研究了其滞回曲线和位移延性系数,得出了随着框架柱轴压比的增大,框架延性降低的结论.
A 3-D nonlinear finite element analysis model of concrete-filled steel tubular frame is proposed. Compared with the experimental hysteretic curve, the computational results are found to be highly accurate; and it is shown that this model proposed can be applied to structural analysis of concretefilled steel tubular frames. So the model is used in the finite element analysis of concrete-filled rectangular tubular frames with different axial load levels under low-reversed cyclic loading. Compared the computational bysteretic curves and displacement ductility ratios, it can be concluded that the ductility of concrete-filled steel tubular frames reduces with the increasing of the axial load levels.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2005年第4期59-62,共4页
Engineering Journal of Wuhan University
关键词
轴压比
钢管混凝土
框架
滞回性能
有限元
axial load level
concrete-filled steel tube
frame
hysteretic behavior
finite element
