Oral Presentation

¹MOHAMED ABDELAZIM ; ²Sedky Abdallah Tohamy; ³khalid mohamed farah; ⁴Mohamed Ahmed Saifeldeen

¹Civil engineering, faculty of engineering, Aswan university, Aswan, Egypt

²civil engineering, faculty of engineering, Minia University, Minia, Egypt

³civil engineering, faculty of engineering, Aswan University, Aswan, Egypt

⁴Civil Engineering, Faculty of Engineering, Aswan University, Aswan, Egypt

The use of web openings in cold-formed C-channel steel beams is a promising technique for reducing material usage and cost in construction. However, the introduction of web openings can also affect the structural behavior of the beam. By incorporating stiffeners near the web openings, it becomes possible to recover the reduced flexural capacity. This study presents a numerical approach to investigate the influence of web openings on flexural behavior including the moment capacities and failure modes of cold-formed steel C-channels with edge-stiffened web openings, unstiffened web openings, and plain web under bending. The finite element method (FEM) is used to develop a numerical model that accurately simulates the behavior of CFS C-channel beams with circular web openings under four-point bending by using ABAQUS software. The numerical model is validated using experimental data from previous studies, and the results showed good agreement between the predicted and measured values. The validated model is then utilized to investigate the effect of various parameters, such as the size of the web openings and the length of edge-stiffener web openings on the bending behavior of the channels. It is shown that the presence of web openings significantly affects the bending behavior of the channels and the original flexural capacity of the CFS beams will be restored as a result of introducing stiffened openings into CFS members.

Cold-formed steel; web openings; Edge-stiffened; Finite element analyses; Bending

Structural and Construction Engineering