Nonlinear analysis of reinforced concrete slabs subjected to fire

A nonlinear layered finite element procedure for predicting the structural response of reinforced concrete slabs subjected to fire is described. The p roposed procedure is based on the Mindlin/Raissner (thick plate) theory and an iterative, tangent stiffness formulation is employed. The complex featu res of structural behavior in fire conditions, such as thermal expansion, c racking or crushing, and change of material properties with temperature are considered but spalling of concrete is excluded. Predictions from the mode l are compared against experimental results by previous researchers.