An experimental study of the mechanical behavior of steel planar tubular trusses in a fire

Experimental research has been conducted to study the mechanical behavior of two full-scale steel planar tubular trusses without fire-proof coating under fire conditions. The research aims to investigate the failure modes and temperature distribution of the steel planar tubular truss at elevated temperatures, as well as to validate the numerical related model. The experimental results demonstrate that the failure of the specimens was caused by local buckling of the brace members.