Numerical Validation of Fire- Effected Reinforced Concrete Beam

Abstract

This study aims to validate experimental test results of post-fire reinforced concrete beams within a finite element environment while identifying temperature-related and structural response parameters. The comparison between finite element simulations and experimental findings demonstrated remarkable consistency. Through multiple trials, a viscosity range for 0.001 to 0.000001 was examined, with a viscosity of 0.000001 yielding satisfactory outcomes for the beam. Additionally, analysis revealed that a dilation angle of 31 degrees provided satisfactory results, with a range of 20 to 31 degrees being reliable and consistent. Mesh sizes ranging from 20 mm to 50 mm were utilized, with a 25 mm mesh size identified as the most suitable through finite element analysis. The validation approach demonstrated good agreement with experimental test results, particularly concerning thermocouple temperature during the fire and post-fire capacity of the reinforced concrete beam. This comprehensive validation process enhances confidence in the accuracy and reliability of finite element simulations for assessing post-fire behavior in reinforced concrete structures.