圆钢管再生混凝土长柱抗震性能试验研究

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中图分类号：TU398.9 文献标志码：A

Abstract： In order to further promote the application level of recycled concrete filled steel tube components in earthquake prone areas，1O 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 wallthickness as influencing parameters，and conducts in-depth research on the failure mechanism and hysteresis performance，skeleton curve and ductility coefcient， 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 O.49 to 1.07，indicating that they have good deformation performance and seismic resistance.The research results can provide guiding reference for the practical application of recycled concrete filed steel tube components.

Key Words： recycled concrete filled steel tube;low cycle reciprocating loading; hysteresis curve; skeleton curve; ductility

Citation format： ZHU M， CHEN Z， WU X G， et al. Experimental study on seismic behavior of recycled aggregateconcrete filledcircular steel tubular long column[J].JournalofEast China Jiaotong University，2025，42 （5）：21-29.

随着旧城改造、农村城镇化和基础设施建设的飞速发展，大量未经处理的建筑垃圾被丢弃在农村地区或垃圾填埋场[。（剩余10875字）