TY - JOUR
T1 - Experimental and numerical study of hot-rolled duplex stainless steel CHS columns
AU - Ning, Keyang
AU - Yang, Lu
AU - Wang, Jie
AU - Dai, Peng
AU - Sun, Yinan
N1 - Funding Information:
This work was supported by the Beijing Excellent Talent Training Support (Grant No. 2017000026833ZK26 ), and National Natural Science Foundation of China (Grant No. 51922001 and 51421005 ).
Publisher Copyright:
© 2021 Elsevier Ltd
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/5/31
Y1 - 2021/5/31
N2 - Stainless steel circular hollow section (CHS) members have been widely used in building structures because of their comparable strength to structural carbon steels, attractive appearance and excellent corrosion resistance. However, research on stainless steel CHS members has been limited to cold-formed members, whereas hot-rolled CHS columns have received less attention. To this end, the flexural buckling performance of hot-rolled duplex stainless steel CHS columns was investigated by a comprehensive experimental and numerical programme. A total of seven hot-rolled duplex stainless steel CHS columns covering two cross-sectional sizes with varying lengths have been tested under compression. Based on the test results, finite element (FE) models were developed and used in parametric studies to generate data points with a wider range of geometric dimensions. Comparing the test and FE results with current design guidance, it was found that the Chinese standard, CECS 410, and North American design guidance, AISC DG 27, underestimate significantly the flexural buckling resistance of such columns, while the design method in Eurocode 3: Part 1–4 might be unsafe in predicting the resistances for low slenderness values. New column buckling curves based on the Eurocode 3 and AISC DG 27 design formulae with improved accuracy and reduced scatters were also proposed and validated through careful reliability analysis.
AB - Stainless steel circular hollow section (CHS) members have been widely used in building structures because of their comparable strength to structural carbon steels, attractive appearance and excellent corrosion resistance. However, research on stainless steel CHS members has been limited to cold-formed members, whereas hot-rolled CHS columns have received less attention. To this end, the flexural buckling performance of hot-rolled duplex stainless steel CHS columns was investigated by a comprehensive experimental and numerical programme. A total of seven hot-rolled duplex stainless steel CHS columns covering two cross-sectional sizes with varying lengths have been tested under compression. Based on the test results, finite element (FE) models were developed and used in parametric studies to generate data points with a wider range of geometric dimensions. Comparing the test and FE results with current design guidance, it was found that the Chinese standard, CECS 410, and North American design guidance, AISC DG 27, underestimate significantly the flexural buckling resistance of such columns, while the design method in Eurocode 3: Part 1–4 might be unsafe in predicting the resistances for low slenderness values. New column buckling curves based on the Eurocode 3 and AISC DG 27 design formulae with improved accuracy and reduced scatters were also proposed and validated through careful reliability analysis.
KW - Circular hollow section
KW - Design method
KW - Flexural buckling
KW - Hot-rolled
KW - Stainless steel
UR - http://www.scopus.com/inward/record.url?scp=85101116304&partnerID=8YFLogxK
U2 - 10.1016/j.jcsr.2021.106579
DO - 10.1016/j.jcsr.2021.106579
M3 - Article
AN - SCOPUS:85101116304
SN - 0143-974X
VL - 180
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
M1 - 106579
ER -