TY - GEN
T1 - Eccentric compression tests on high strength duplex stainless steel columns
AU - Lui, W. M.
AU - Young, B.
AU - Ashraf, M.
PY - 2012/10/26
Y1 - 2012/10/26
N2 - Attractive appearance, corrosion resistance and ease of maintenance are the obvious reasons for widespread use of stainless steel in a variety of structures, whilst beneficial mechanical properties such as high ductility, better fire resistance and high strength demonstrated by the duplex grades add significant value to the aesthetics of stainless steel. Reliable experimental investigations are a prerequisite to explore the full potential of stainless steel members and to evaluate the performance of the existing design rules. The current paper describes a test program on cold-formed stainless steel SHS columns subjected to eccentric compression to investigate beam-column interaction. Considered cross-sections were produced from high strength duplex stainless steel with the measured yield stress up to 700MPa. Material properties were obtained from the tensile coupons cut from within the cross-sections, whilst initial geometric imperfections were measured at mid-height of each of the pin-ended column specimens. Two different column lengths were considered with varying eccentricity for each specimen. The strength and behaviour of the cold-formed high strength stainless steel beam-columns were investigated.The test resistanceswere compared with those predicted using theAmerican and the Australian/New Zealand design specifications for cold-formed stainless steel structures. It is observed that the code predictions are mostly conservative for stainless steel beam-columns with rooms for improvement in the available design guidance.
AB - Attractive appearance, corrosion resistance and ease of maintenance are the obvious reasons for widespread use of stainless steel in a variety of structures, whilst beneficial mechanical properties such as high ductility, better fire resistance and high strength demonstrated by the duplex grades add significant value to the aesthetics of stainless steel. Reliable experimental investigations are a prerequisite to explore the full potential of stainless steel members and to evaluate the performance of the existing design rules. The current paper describes a test program on cold-formed stainless steel SHS columns subjected to eccentric compression to investigate beam-column interaction. Considered cross-sections were produced from high strength duplex stainless steel with the measured yield stress up to 700MPa. Material properties were obtained from the tensile coupons cut from within the cross-sections, whilst initial geometric imperfections were measured at mid-height of each of the pin-ended column specimens. Two different column lengths were considered with varying eccentricity for each specimen. The strength and behaviour of the cold-formed high strength stainless steel beam-columns were investigated.The test resistanceswere compared with those predicted using theAmerican and the Australian/New Zealand design specifications for cold-formed stainless steel structures. It is observed that the code predictions are mostly conservative for stainless steel beam-columns with rooms for improvement in the available design guidance.
UR - http://www.scopus.com/inward/record.url?scp=84867700263&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:84867700263
SN - 9780415621373
T3 - Tubular Structures XIV - Proceedings of the 14th International Symposium on Tubular Structures, ISTS 2012
SP - 431
EP - 438
BT - Tubular Structures XIV - Proceedings of the 14th International Symposium on Tubular Structures, ISTS 2012
T2 - 14th International Symposium on Tubular Structures, ISTS 2012
Y2 - 12 September 2012 through 14 September 2012
ER -