Abstract
The wide use of cold-formed sections (CFS) in the field of steel constructions, favored by the multiple advantages they offer (lightness, ease of installation, etc.), has led us to reflect on a new process for manufacture of metal beams allowing the design of very large span hangars and a reduction in instability problems. This paper presents a study of the theoretical and numerical behavior of a large span CFS beam with different webs, a solid web, a triangular corrugated web, and a trapezoidal corrugated web. These beams are stressed by a concentrated bending load at mid-span. Numerical modeling was done using the finite element software ABAQUS. The results were validated with those theoretically found, based on the effective width method adopted in standard EN1993-1-3. The load capacity and failure modes of the beams were discussed. According to numerical and analytical analysis, corrugated web beams perform better than all other sections.
Highlights
Structural elements in steel construction are classified into two categories: hot-rolled sections and cold-formed sections
Corrugated web beams are advantageous for the construction industry, due to the maximum lateral stiffness of the beam
The single web beam exhibited a significant lateral displacement compared to the corrugated web beams and a local buckling, this lateral displacement results in instability i.e a distortional lateral buckling
Summary
Structural elements in steel construction are classified into two categories: hot-rolled sections and cold-formed sections. Structural elements in CFS retain their position in the light construction sector This is due to the important advantages of CFS: high strength/weight ratio, ease of transport, the possibility of using all conventional assembly methods, cost efficiency, very good quality control, dimensional stability, and flexibility in the manufacture of profiles by compared to hot-rolled sections [5,6]. In thin-walled or cold-formed steel sections, the width/thickness ratio of the plate elements is always important and the bending failure occurs by buckling and not by deformation, which limits its loading capacity [7]. Many researchers have attempted to use corrugated plates in the webs of hot-rolled I-beams This overcomes the drawbacks of conventional stiffened flat cores. The use of these corrugated sheets will make it possible to lighten the beams, which will lead to a gain in weight (low thickness) and application to beams of great range
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
