In order to increase a stiffness of cold-formed steel (CFS) elements it is practised to built-up the cross-section. In the analysed case, a main element is strengthened by adding extra chord in ...
An infill component known as a "concrete-filled steel tube" (CFST) is a structural system consisting of an outer steel tube and a core filled with concrete 1. The most commonly used types of CFST ...
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