Aakash Patil
M. Tech. Structural Engineering, Department of Civil Engineering, K. E. Society’s, Rajarambapu Institute of Technology, Rajaramnagar (Urun-Islampur), Sangli, Maharashtra, India.
Dr. Pramod Salgar, Assistant Professor
Department of Civil Engineering, K. E. Society’s, Rajarambapu Institute of Technology, Rajaramnagar (Urun-Islampur), Sangli, Maharashtra, India.
Investigation of flexural behaviour of cold-formed steel built-up section beams after exposure to elevated temperature.
Authors
Abstract
Recently worldwide industrial constructions have frequently been built
using light gauge materials like cold-formed steel (CFS) sections due to
their lightweight and affordable design systems. One important aspect of
building design and construction that must be considered is fire safety.
However, limited studies are reported on experimental and finite element
modelling (FEM) of back-to-back built-up channel sections of cold-formed
steel (CFS) under flexure behaviour. Four back-to-back built-up CFS
sections were considered for the preparation and the structural performance
was investigated. CFS test specimens were exposed to elevated
temperatures of 500 0 C, 600 0 C and 700 0 C in an electrical furnace to study the
effect of temperature on the structural performance of CFS. The thirty-six
FEM models were studied for different web-to-thickness ratios and the
results were validated. This paper investigates the load-carrying capacity,
bending moment and load mid-span deflection. The study concludes that
the load-carrying capacity for flexural behaviour is decreased by 56.04%
with reference temperature.