Coupled Thermodynamic Analysis on the Fire Response and Improvement of Fire Resistance of Steel Buildings

The poor fire resistance of steel buildings threatens structural security, and severely limits the application of such buildings in many countries. The existing studies have not carried out whole-process analysis on the temperature field distribution and deformation law of steel building components under fire. To solve the problem, this paper performs coupled thermodynamic analysis on the fire response of steel buildings, and tries to improve their fire resistance. Firstly, the dynamical properties of steel buildings in response to fire were analyzed, and a coupled thermodynamic model was constructed for these buildings. Next, the whole process of thermodynamic coupling was investigated for the fire response of steel buildings. Through experiments, the authors obtained the results of coupled thermodynamic analysis, and presented suggestions on how to improve fire resistance.