Experimental Research on Seismic Performance of Four-Element Variable Cross-Sectional Concrete Filled Steel Tubular Laced Columns

3rd Annual International Workshop on Materials Science and Engineering

Ou, Zhijing^1 ; Lin, Jianmao^1 ; Chen, Shengfu^1 ; Lin, Wen^1

College of Civil Engineering, Fujian University of Technology, Fuzhou

350118, China^1

关键词: Concrete-filled steel tubular;    Displacement ductility;    Energy dissipation capacities;    Energy expenditure;    Experimental parameters;    Experimental research;    Seismic Performance;    Stiffness degradation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/250/1/012039/pdf
DOI  :  10.1088/1757-899X/250/1/012039

来源: IOP

【 摘 要 】

A total of 7 experimental tests were conducted to investigate seismic performance of four element variable cross-sectional Concrete Filled Steel Tubular (CFST) laced columns. The experimental parameters are longitudinal slope and arrangement type of lacing tubes. The rules on hysteresis loop, ductility, energy expenditure, and stiffness degradation of specimens are researched. Test results indicate that all specimens have good seismic performance; their hysteresis loops are full without obvious shrinkage. With the increase of longitudinal slope, the horizontal carrying capacity increases, energy dissipation capacity improve, and there is slightly increase in stiffness degradation. The influence of arrangement type of lacing tubes on displacement ductility of specimens is big.