碳纤维钢骨-钢管混凝土柱抗震性能试验与有限元分析  

Experimental Study and Nonlinear FEM Analysis on Seismic Performance of CFRP Steel Tube Composite Columns Filled with Steel Reinforced Concrete

作　　者：徐亚丰[1] 王越[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2013年第4期612-620,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(90815020);辽宁省教育厅科学研究项目(LS2010131)

摘　　要：目的研究碳纤维钢骨-钢管混凝土柱在低周往复荷载作用下的力学性能,为实际工程应用提供参考.方法制作了3个试件并对其进行拟静力试验,分析不同轴压比下构件的荷载-位移滞回曲线、骨架曲线、延性系数等力学性能.同时采用ABAQUS对碳纤维钢骨-钢管混凝土柱的滞回性能进行了数值分析及试验验证.结果无论轴压比如何变化,滞回曲线均具有较好的稳定性,曲线都呈饱满的梭形或弓形,没有明显的捏缩现象出现,表明构件的塑性变形能力较强;随着轴压比增大,骨架曲线出现较明显的下降段且构件的极限承载力降低,极值点对应的位移变小;极限荷载、极限位移及延性系数皆随轴压比的增大而减小.模拟结果与试验结果吻合较好.结论碳纤维钢骨-钢管混凝土柱延性好,具有良好的抗震性能,可应用于实际工程中.In order to research the mechanical properties of carbon fiber steel tube composite columns filled with steel reinforced concrete under low frequency cyclic loads to provide a reference for practical engineering application,3 specimens of different axial compression ratio are on the pseudo-static test and load displacement component hysteretic curve,skeleton curve,ductility coefficient of mechanics performance is analyzed.At the same time,the large-scale general finite element analysis software ABAQUS is adopted to the numerical analysis and experimental verification of hysteretic performance of carbon fiber reinforced concrete filled steel tube columns.The simulation results of carbon fiber steel tube composite columns filled with steel reinforced concrete are in good agreement with experimental results.No matter how to change axial compression ratio,load-displacement hysteretic curves graphics has good stability and curve graph are plump spindle or arched without significant pinch phenomenon.It shows that the plastic deformation ability of the components is strong.As the axial compression ratio increases,the skeleton curve appears obvious decline and the ultimate bearing capacity of the component reduces and extreme value point corresponding to the displacement is smaller.Limit load and limit displacement and ductility coefficient decreases with the increasing of axial compression ratio.The carbon fiber steel tube composite columns filled with steel reinforced concrete has good ductility,good seismic performance,adaptation combined with practical engineering applications.

关 键 词：碳纤维钢骨-钢管混凝土柱 轴压比 抗震性能 延性 有限元分析 

分 类 号：TU398.9[建筑科学—结构工程]