【作者】 王来； 王铁成； 尹燕霞； 邓芃；

【Author】 WANG Lai~(1,2) WANG Tie-cheng~2 YIN yan-xia~1 DENG Peng~1 (1.College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao 266510,China; 2.School of Civil Engineering,Tianjin University,Tianjin 300072,China)

【机构】 山东科技大学土木建筑学院； 天津大学建工学院；

【摘要】 为了研究方钢管混凝土框架的抗震性能,进行了一榀三层两跨方钢管混凝土框架模型的拟静力试验,得到了方钢管混凝土框架模型在低周反复荷载下的滞回曲线和 P-Δ骨架曲线,通过分析反复荷载下框架结构的滞回性能、变形性能和刚度退化等,得出方钢管混凝土框架具有初始刚度大、极限承载力高、延性和耗能性能良好的结论.在试验结果分析的基础上,建议方钢管混凝土框架恢复力模型采用退化三线型,并建立了恢复力模型,给出了恢复力模型各阶段刚度参数的计算公式,为方钢管混凝土框架结构的抗震性能分析提供了理论基础.更多还原

【Abstract】 In order to investigate the seismic resistant performance of concrete-filled rectangular steel tubular frame(CRSTF),the test was conducted on a two-span,three-storey concrete-filled rectangular steel tu- bular frame under repeated loading and cyclic loading,the hysteretic curve and theP-A framework curve were obtained.By means of further analyzing the hysteretic behavior,deformation behavior and stiffness degenera- tion,it is concluded that the frame has merits of large initial stiffness,high ultimate bearing capacity,good ductility and energy consumption property.Based on the test results and analysis,the three-linear restoring force model was proposed and established,and the calculation formulas of stiffness parameter in restoring force model at different stages of deformation were also presented.The proposed model can be applied to the aseis- matic analyses and design of concrete-filled rectangular steel tubular frame.更多还原