Análise da transferência de calor nos alvéolos de lajes pré-moldadas alveolares em situação de incêndio

Abstract

This study investigates the thermal behavior of prestressed concrete hollow core slabs under fire conditions using computational modeling in ANSYS. The work validates a numerical model based on experimental reference data, with the main objective of analyzing the thermal response of this structural system when subjected to fire. The study evaluated how the impact of hollow core performance on fire was assessed. The results demonstrate a significant correlation between the numerical and experimental data, validating the accuracy of the developed computational model. Additional analyses demonstrated that boundary conditions and construction characteristics significantly alter the thermal behavior of hollow core slabs under fire. It was found that the presence of convection in the hollow core substantially modifies the heat transfer mechanisms, influencing both the thermal distribution and the heat flux through the structure, with direct impacts on its fire performance.