Experimental Study on Seismic Behavior of Recycled Aggregate Concrete Filled Circular Steel Tubular Long Column
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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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TU398.9

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    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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History
  • Received:December 10,2024
  • Revised:
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  • Online: November 25,2025
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