圆钢管再生混凝土长柱抗震性能试验研究
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1.华东交通大学土木建筑学院,江西 南昌 330013 ;2.广西大学工程防灾与结构安全教育部重点实验室,广西 南宁 530004 ;3.哈尔滨工业大学结构工程灾变与控制教育部重点实验室,黑龙江 哈尔滨 150090 ;4.东莞理工学院广东省城市生命线工程智慧防灾与应急技术重点实验室,广东 东莞 523000

作者简介:

朱铭(1992—),男,讲师,博士研究生,研究方向为钢-混组合结构。E-mail:2021019081400011@ecjtu.edu.cn。

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中图分类号:

TU398.9

基金项目:

国家自然科学基金项目(52368028);江西省教育厅科学技术项目(GJJ2405302)


Experimental Study on Seismic Behavior of Recycled Aggregate Concrete Filled Circular Steel Tubular Long Column
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Affiliation:

1.School of Civil Engineering and Architecture, East China JiaoTong University, Nanchang 530004 , China ; 2.Key Laboratory ofDisaster Prevention and Structural Safety of Ministry of Education, School of Civil Engineering and Architecture, GuangxiUniversity, Nanning 530004 , China ; 3.Key Lab of Structures Dynamic Behavior and Control of China Ministry of Education,Harbin Institute of Technology, Harbin 150090 , China ; 4.Guangdong Provincial Key Laboratory of Intelligent Disaster Preventionand Emergency Technologies for Urban Lifeline Engineering, Dongguan University of Technology, Dongguan 523000 , China

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    摘要:

    为进一步提升钢管再生混凝土构件在地震多发区域的应用水平,设计制作了10根圆钢管再生混凝土长柱试件(RACSTC),对其进行低周往复加载,以轴压比与钢管壁厚为影响参数,研究RACSTC的破坏机理,以及滞回性能、骨架曲线与延性系数、耗能与割线刚度退化等的变化规律。研究结果表明,RACSTC的滞回曲线饱满无捏缩,骨架曲线经历弹性阶段、弹塑性阶段和下降阶段,表现出良好的延性,屈服位移角和极限位移角均满足相关规范的要求。RACSTC在破坏阶段的等效粘滞阻尼系数介于0.49~1.07之间,表明其具有良好的变形性能和抗震能力。研究结果能够为钢管再生混凝土构件的实际应用提供参考依据。

    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 hysteresis 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, indicating 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.

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朱铭,陈正,吴香国,等. 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.

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  • 收稿日期:2024-12-10
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  • 在线发布日期: 2025-11-25
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