Tests of cold-formed high strength stainless steel compression members |
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| Authors: | Ben Young Wing-Man Lui |
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| Affiliation: | aDepartment of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China;bDepartment of Civil Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China |
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| Abstract: | The paper describes a test program on cold-formed high strength stainless steel compression members. The duplex stainless steel having the yield stress and tensile strength up to 750 and 850 MPa, respectively, was investigated. The material properties of the test specimens were obtained from tensile coupon and stub column tests. The test specimens were cold-rolled into square and rectangular hollow sections. The specimens were compressed between fixed ends at different column lengths. The initial overall geometric imperfections of the column specimens were measured. The strength and behaviour of cold-formed high strength stainless steel columns were investigated. The test strengths were compared with the design strengths predicted using the American, Australian/New Zealand and European specifications for cold-formed stainless steel structures. Generally, it is shown that the design strengths predicted by the three specifications are conservative for the cold-formed high strength stainless steel columns. In addition, reliability analysis was performed to evaluate the current design rules. |
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| Keywords: | Cold-formed steel Column Duplex stainless steel Experimental investigation High strength Material properties Stainless steel structures Structural design Tubular sections |
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