塑性铰区ECC-钢管混凝土组合截面柱抗震性能研究  

Study on the seismic behavior of reinforced concrete columns with ECC-CFST composite sections in plastic hinge region

作　　者：汪潮源 李晰 WANG Chaoyuan;LI Xi(School of Civil Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学土木工程学院,青岛266525

出　　处：《青岛理工大学学报》2024年第5期10-17,26,共9页Journal of Qingdao University of Technology

基　　金：山东省自然科学基金重点项目(ZR2021ME094)。

摘　　要：为研究塑性铰区ECC-钢管混凝土组合截面柱的抗震性能,完成了2根ECC-钢管混凝土组合截面柱和1根普通钢筋混凝土柱对比的低周反复水平荷载试验,并对试验结果得到的滞回曲线、骨架曲线、延性系数、残余位移、耗能能力等抗震性能指标进行量化分析。试验结果表明,与普通钢筋混凝土柱相比,塑性铰区ECC-钢管混凝土组合截面柱的承载力、刚度及耗能能力均有较大程度提高,残余位移也得到有效控制,ECC材料能够与钢管及钢管内部填充材料协同工作和共同变形。In order to study the seismic behavior of reinforced concrete columns with ECC-CFST composite sections in plastic hinge region,two reinforced concrete columns with ECC-CFST composite sections in plastic hinge region and one normal steel-reinforced concrete comparison column were subjected to low cyclic horizontal loading tests.The seismic performance index obtained from the test results including hysteresis curves,skeleton curves,ductility coefficients,residual displacements and energy dissipation capacities were quantitatively analyzed.The test results showed that compared with the normal steel-reinforced concrete column,the bearing capacity,stiffness and energy dissipation capacity of reinforced concrete columns with ECC-CFST composite sections in plastic hinge region were greatly improved,and the residual displacements were also effectively controlled.In addition,ECC material can work and deform collaboratively with steel pipe and the filling material inside the steel pipe.

关 键 词：塑性铰区 ECC 组合截面桥墩 抗震性能 低周反复水平荷载 

分 类 号：U443.22[建筑科学—桥梁与隧道工程]