Structural Performance of Experimentally Investigated CFRP-Strengthened Cold-formed Steel Built-Up Columns

• Main Authors: Chakravarthy N., Naganathan S., Kalavagunta S., Mustapha K.N.B.
• Other Authors: 57194602818
• Format: Article
• Published: Springer Science and Business Media Deutschland GmbH 2023

This paper�presents the investigation on built-up cold-formed steel column sections strengthened with�carbon fibre-reinforced polymer�(CFRP). Here, box-shaped column sections were fabricated by screwing together with individual channels. Behaviour of twelve plain and twelve CFRP-strengthened box sections was studied under axial compression. Three lengths of 300�mm, 500�mm and 700�mm with section thickness of 0.6�mm, 0.75�mm and 1�mm�were studied in the investigation. The cold-formed steel design procedure suggested by North American specification AISI S100-16 and Euro code 3 (EC3) provisions was�applied and compared with the experimental results, which were in good agreement. The results�also indicate that the proposed strengthening technique is�effective�in repair and increasing the load-carrying capacity of�cold-formed steel built-up box column. � 2021, Shiraz University.