Numerical Simulation of Fire Resistance Performance for Planar Frame with Concrete Filled Steel Tubular Columns and Steel Beams
In this paper, the fire resistance performance of the unprotected two-layer and two-cross planar frame, which is composed of concrete filled steel tubular columns and steel beams, was analyzed under local fire by ANSYS. After analyzing the structure with the method of hot - structural coupling using standard heating curve ISO-834, some consequence were obtained such as the regularity of temperature field distribution of beams and columns and the fire endurance and critical temperature of the structure. It turned out that the bottom flange at the end of the beams appeared local buckling when the structure reached the limit state by fire, and the first plastic hinge appeared at the end of beams. Furthermore, because the horizontal displacement of column is small, the overall collapse of structure can be avoided effectively.
Y. Yin and T. Li, "Numerical Simulation of Fire Resistance Performance for Planar Frame with Concrete Filled Steel Tubular Columns and Steel Beams", Applied Mechanics and Materials, Vols. 94-96, pp. 755-758, 2011