Performance Study of Cold-formed steel Channel joist with web opening subjected to flexural loading

Abstract

Abstract This study presents the structural behaviour of cold-formed steel joists with different web-opening shapes. The investigation incorporated both experimental and analytical approaches. The study involved the selection of square and circular web openings, and channel sections were chosen based on site-specific design considerations. In the experimental phase, channel joists were subjected to flexural loading and tested. An analytical investigation was conducted. Finite element (FE) models were developed using the FEM software ANSYS APDL version 16.2. FE models were used to simulate the structural response of the channel joist when subjected to flexural loading. A parametric study was conducted on the basis of simulation and experimental investigation. Factors that influence stiffness and load-carrying capacity considering variables in cold-formed steel channel joists were analyzed. Analytical investigations were conducted. Based on this result analysis, significant effects were observed, indicating a better agreement between the analytical and experimental results. In addition, it was shown that channel joists with circular web openings provide high efficiency in terms of load-carrying capacity and stiffness in web-opening shapes.