Axial capacity of stainless steel and conventional carbon steel square short columns retrofitted with CFRP sheets

被引：0
|
作者：
Tang H. [1 ]
Ge S. [1 ]
Fu X. [1 ]
Sun X. [1 ]
Li Z. [1 ]
机构：
[1] Institute of Structural Engineering, Xihua University, Chengdu
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2020年 / 41卷
关键词：
Axial bearing capacity; Axial compression; Conventional carbon steel; Square hollow section (SHS) short column; Stainless steel; Static test; Transverse strengthening by CFRP sheets;
D O I：
10.14006/j.jzjgxb.2020.S1.011
中图分类号：
学科分类号：
摘要：
The performance and bearing capacity of short columns of stainless steel and conventional carbon steel square tube strengthened by transverse carbon fiber reinforced polymer (CFRP) were studied through axial compression test and numerical simulation. The results show that the failure modes of control specimens and reinforced specimens of stainless steel and conventional carbon steel square tube short columns under axial compression are symmetrical local buckling. The ultimate bearing capacity of CFRP reinforced specimens is significantly improved compared with the control specimens. For specimens with the same width-thickness ratio, the reinforcement effect of four layers is better than that of two layers. With the increase of width-thickness ratio, the percentage of bearing capacity of members increases accordingly. At the same time, the bearing capacity of specimens with different width-thickness ratios strengthened by CFRP was studied by refined finite element simulation. Finally, based on the concept of effective section of compressed thin-walled section and the assumption of transverse CFRP only confining the effective section of square tube, the calculation method of ultimate bearing capacity of stainless steel and conventional carbon steel square short columns strengthened with CFRP sheets was deduced and compared with the experimental results, literature data and finite element simulation results to verify the validity and applicability. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
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页码：98 / 108
页数：10
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