Research on cold-formed steel columns |
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Authors: | Ben Young |
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Affiliation: | aDepartment of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong |
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Abstract: | The paper summarises research on cold-formed steel columns performed by the author. Cold-formed steel members are either cold-rolled or brake-pressed into structural shapes. As a result, cold-formed steel open sections are usually singly-point- or non-symmetric. The most common types of singly-symmetric sections are channel and angle. The research focused on cold-formed steel open sections, such as plain and lipped channels, channels with simple and complex edge stiffeners as well as plain and lipped angles, and unequal angles. In addition, cold-formed steel built-up closed sections with intermediate stiffeners were investigated. Both experimental and numerical investigations into the strength and behaviour of cold-formed steel columns were conducted. The column strengths obtained from these investigations were compared with the design strengths obtained using various international standards for cold-formed steel structures. Furthermore, the behaviour and design of cold-formed steel lipped channel columns at elevated temperatures were also investigated. The paper also summarises the design recommendations for cold-formed steel columns. |
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Keywords: | Buckling Built-up section Closed section Cold-formed steel Column Elevated temperatures Experimental investigation Finite element analysis Open section Steel structures |
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