Muthanna Journal of Engineering and Technology
Volume (12), Issue (1), Year (30 June 2024), Pages (86-95)
DOI:10.52113/3/eng/mjet/2024-12-01/86-95
Research Article By:
Zainab Hayder and Alaa S Al-Husainy
Corresponding author E-mail: zainab99hayder@gmail.com and Zainab.h.q@mu.edu.iq
ABSTRACT
Concrete filled steel tube (CFST) column has been widely used in multi-storey buildings, towers and bridges due to its exceptional structural capacity and high load bearing. As a result of the increase in human activity within the building space and the recent increase in the rate of fires, it is important to research the behavior of this important type of columns under the influence of the combined load of static and fire loads. In this research, an introduction to CFST columns and an overview of published studies on the fire performance of CFST columns is presented. In this research, the focus was on the mechanical properties of steel and concrete and its effect on the column under the influence of high temperatures. To learn about CFST columns and their characteristics, and to diagnose the scientific gap in the behavior of these columns and the characteristics that need to be studied more deeply. Through research, it was found that the yield strength of steel does not have that important effect on the column’s resistance to fire compared to the resistance of concrete. It was also found that increasing the percentage of thinness negatively affects fire resistance. The double-skin column is the least studied for its mechanical properties and behavior under high temperatures.
Keywords: Composite columns, fire loading, static and fire loading, numerical simulation, concrete-filled steel column, CFST, numerical simulation, Abaqus 2017.