Experimental Study on the Hysteresis Performance ofStiffened Square CFST

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Zheng, Xinzhi^1^2^3 ; Z., Zhou ; S., Zheng ; T., Wang

Research Station of Civil Engineering, Chongqing Jiaotong University, Chongqing

40074, China^1

Henan Engineering Laboratory of Ecological Architecture and Environment Construction, Henan Polytechnic University, Jiaozuo

454000, China^2

Institute of Bridge Detection and Reinforcement Technology, Huanghe Jiaotong University, Jiaozuo

454950, China^3

School of Civil Engineering, Zhengzhou Institute of Technology, Zhengzhou

450044, China^4

关键词: Antiseismic performance;    Concrete filled steel tubular columns;    Diameter-to-thickness ratios;    Hysteresis performance;    Low cyclic loading tests;    Manufacturing methods;    Reciprocating loading;    Width-to-thickness ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012050/pdf
DOI  :  10.1088/1755-1315/218/1/012050

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Stiffened Square Concrete Filled Steel Tubular Columns (SSCFST) were proposed to solve the problem that ordinary square concrete-filled steel tubular columns (SCFST) are prone to appear local buckling and poor hysteresis performance before reaching the limits of carrying capacity in 3 cases such as the thin steel tubular wall, the larger diameter to thickness ratio or width to thickness ratio. In order to investigate its hysteresis behavior, based on introducing its basic concept, the manufacturing method was expounded, and the low cyclic loading tests of 15 SSCFST and 1 SCFST with binding bars were carried out. The author observed experimental phenomena, failure process and failure mode, then analyzed hysteresis loop area and energy dissipation of SSCFST columns under reciprocating loading, and discussed the effect of various factors to its anti-seismic behavior. Compared to SCFST with binding bars, SSCFST has superior anti-seismic performance.