Q460高强型钢-混凝土组合柱抗震性能试验研究

EXPERIMENTAL STUDY ON THE SEISMIC BEHAVIOR OF Q460 HIGH STRENGTH STEEL SRC COLUMN

Q460钢是能够满足GB 50011—2010《建筑抗震设计规范》屈强比和延伸率要求的高强度建筑结构用钢,对Q460高强型钢-混凝土组合短柱抗震性能进行试验研究,通过2根Q460高强型钢-混凝土柱1∶3缩尺模型的滞回性能试验,对Q460高强型钢-混凝土柱的承载力、刚度、延性和耗能性能等抗震性能指标进行研究。结果表明,Q460高强型钢-混凝土组合短柱在试验中表现出优良的抗震性能,试件层间弹性位移角和弹塑性位移角平均值分别为1/87、1/25,优于GB 50011—2010对于多高层钢结构在多遇和罕遇地震下的要求。

Q460 steel is the high strength steel able to meet the yield ratio and elongation requirements of Code for Seismic Design of Buildings（ GB 50011—2010）. Based on the engineering practice,an experimental study on the seismic behavior of Q460 high strength steel reinforced concrete（ SRC） columns with a 1 ∶ 3 scaled model under constant compression and cyclic bending was conducted. The seismic performance including the bearing capacity,stiffness,ductility and energy dissipation of Q460 high strength steel SRC column was analyzed. The experimental results indicated that Q460 high strength steel SRC columns had a good seismic performance,the average elastic and inelastic displacement angle were1/87 and 1/25 respectively,which were superior to the value specified in GB 50011—2010.