Experimental study of seismic behavior of confined CFST columns at end zone

被引：0
|
作者：
Qin, Peng [1 ]
Li, Xiaowei [2 ]
Xiao, Yan [3 ]
Yi, Weijian [1 ]
Chen, Renpeng [4 ]
机构：
[1] College of Civil Engineering, Hunan Provincial Key Lab on Damage Diagnosis for Engineering Structures, Hunan University, Changsha, China
[2] College of Civil Engineering, Hunan University, Changsha, China
[3] Zhejiang University-University of Illinois Joint Institute, Zhejiang University, Haining, China
[4] Research Center for Advanced Underground Space Technologies of Hunan University, Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education, College of Civil Engineering, Hunan University, Changsha, China
来源：
Journal of Constructional Steel Research | 2024年 / 216卷
基金：
中国国家自然科学基金;
关键词：
Concretes - Cyclic loads - Energy dissipation - Hysteresis - Seismic response;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, the seismic behavior of confined concrete-filled steel tube (CFST) columns was investigated experimentally. Seven columns, including three conventional CFST columns and four CFRP confined CFST columns were tested subjected to cyclic loading under constant axial load. The effect of confined method and loading sequences on the hysteretic behavior (failure mode, degeneration performance, ductility and energy dissipation) was studied. Experimental results indicated that appropriate confined method improves the seismic performance and mechanical property of concrete-filled steel tube. It was shown that two-direction confinement method by setting cushion layer could largely increase the confined area and improve deformation of specimens. © 2024
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