Nonlinear Analysis of Reinforced Concrete Frame Subjected to Fire

Abstract—Reinforced concrete frames are one of most popular structures used in the world, but the research on their fire is at primary stage. In this thesis, the non-liner analysis of reinforced concrete frames at elevated temperature was analyzed by ANSYS, which included calculations and analysis of temperature field，structural deformation, and post-fire ultimate loadings, it was investigated in this paper with ANSYS．The analysis results indicate that the reinforced concrete frame members undergo internal force redistribution under a fire, and the super position of constraint internal forces with external loads causes destroy in beams and columns. Finally, the fire—resistance design of concrete structures was also discussed.In this thesis, by IS0834 Standard temperature-time curve ． At the same time ， th