华东交通大学学报2025，Vol.42Issue(5)：21-29,9.
圆钢管再生混凝土长柱抗震性能试验研究
Experimental Study on Seismic Behavior of Recycled Aggregate Concrete Filled Circular Steel Tubular Long Column
摘要
Abstract
In order to further promote the application level of recycled concrete filled steel tube components in earthquake prone areas,10 recycled aggregate concrete filled circular steel tubular long columns(RACSTC)were designed for low cycle reciprocating loading.The experiment considers axial compression ratio and steel pipe wall thickness as influencing parameters,and conducts in-depth research on the failure mechanism and hys-teresis performance,skeleton curve and ductility coefficient,energy dissipation and secant stiffness degradation of RACSTC.The experimental results show that the hysteresis curve of RACSTC is full without any pinching or shrinking,and the skeleton curve goes through the elastic stage,elastic-plastic stage,and descent stage,with good ductility.The yield displacement angle and ultimate displacement angle meet the standard specifications.The equivalent viscous damping coefficient of RACSTC during the failure stage ranges from 0.49 to 1.07,indi-cating that they have good deformation performance and seismic resistance.The research results can provide guiding reference for the practical application of recycled concrete filled steel tube components.关键词
钢管再生混凝土/低周往复加载/滞回曲线/骨架曲线/延性Key words
recycled concrete filled steel tube/low cycle reciprocating loading/hysteresis curve/skeleton curve/ductility分类
土木建筑引用本文复制引用
朱铭,陈正,吴香国,唐昀超,耿大新..圆钢管再生混凝土长柱抗震性能试验研究[J].华东交通大学学报,2025,42(5):21-29,9.基金项目
国家自然科学基金项目(52368028) （52368028）
江西省教育厅科学技术项目(GJJ2405302) （GJJ2405302）
