Literature Study on the Compression Behaviour of Cold Formed Corrugated Steel Sections

With ever-advancing technology, cold-formed members are being fabricated with higher yield stress materials. With the use of higher-strength steels comes a reduction in thickness, which leads to the development of highly stiffened sections with more folds and stiffener noted that there would be a strong interest for the application of cold-formed framing systems in residential and low-rise buildings. Cold-formed steel sections are usually formed in channel sections, Z-sections, hat sections, angle sections and other sections due to the manufacture process, and these sections are categorized as open sections. These sections can be also formed by connecting two or more sections together, for examples, an I-section formed by connecting two channel sections back-to-back, and a box section formed by connecting two channel sections in the flanges. These sections may fail by local and/or distortional buckling due to their plate width-to-thickness ratio. However, cold-formed steel sections can be strengthened by forming edge and web stiffeners in the sections as well as using I-shaped sections. Therefore, the focus of this study is to investigate the cold-formed steel I-shaped open sections with edge and web stiffeners.