Efficacy of Hollow Flanges In Economizing The Cold-Formed Steel Construction

Authors

  • P.S.Kumar, Dhamodhara Kannan

Abstract

In the practice of structural engineering, those composed of Cold-formed Steel (CFS) members are favored among thin-walled structures, primarily due to the increasing demand for prudent and efficient structural elements. The hollow rectangular flange sections are built to take advantage of the hot-rolled steel sections in which most of material is concentrated in the extreme stress locations. The present study deals with efficiency of the rectangular hollow flange sections for economical construction. A parametric study has been carried out and compared to the conventional cold formed steel section using direct strength method. Web depth to developed length ratio (0.3 to 0.8), flange width to lip depth ratio (1 to 6), thickness (1mm to 3mm) and developed length (400mm to 650mm) are the parameters taken in this study. Spans of 6 to 10m were adopted. The moment capacity is maximum at an intermediate value of web depth to developed length ratio and it is in increasing trend as the thickness and developed length increases. The hollow flange sections perform better than conventional sections because of its torsional rigidity.

Keywords- Hollow Flange Beams; Direct strength method; Finite strip method.

Published

2020-11-29

Issue

Section

Articles