Thermal numerical analysis of steel and steel and concrete composite columns in a fire situation aimed at the evaluation of the simplified method of ABNT NBR 14323:2013 - Rossi, Mariana Lavagnolli; Simões, Yagho de Souza; Munaiar Neto, Jorge; Castro, Alessandra Lorenzetti de (Revista IBRACON de Estruturas e Materiais, 2021)