NUMERICAL STUDY OF THE BEHAVIOR OF RC BEAM AT HIGH TEMPERATURES

The numerical study focuses on analyzing the structural response of reinforced concrete (RC) beams at high temperatures. Gaining more insight into the behavior of reinforced concrete (RC) structures at high temperatures and the material properties of steel reinforcement and concrete are the main goals of this research. To conduct this analysis, finite element analysis (FEA) using the ABAQUS software package is adopted. FEA allows for the simulation of the behavior of the RC beam under fire by inputting relevant parameters, such as material properties, dimensions, and temperature. The program calculates the temperature distribution within the structure and predicts the resulting structural responses. Two phases are applied: before and afterexposure to fire. Both normal-strength concrete (NSC) beams and high-strength concrete (HSC)beams are considered. The results indicate that high temperatures have a detrimental effect on the overall behavior of concrete beams. At 600°C, the residual strength of HSC beams is shown to be twice that of NSC beams.