Finite Element Analysis of Composite Deck Slab Under Fire Exposure

Abstract

The use of composite deck slabs with profiled steel decking is gaining wide-scale popularity because of its lightweight, easy installation, and high strength. This paper presents a study on the loads, stresses, and thermal performance of composite deck slabs with profiled steel sheeting using finite element analysis (FEA) in ANSYS software. The geometry of the composite slab specimen is developed with the aid of finite element modeling in the ANSYS. The central section of the steel slab web has been considered in the development of the finite element analysis model. The composite slab specimen with varied steel deck configurations has been used to address the 3D transient heat transformation problem. The study considers a simply supported slab and analyzes its load-carrying capacity by varying section parameters: sheet thickness, depth of concrete and profiled deck slab type. For the test, a composite slab with a trapezoidal shape has been chosen. A steel beam and shear connector were used to create the three-dimensional figure model. As a result, the same area of the slab was used to develop all shear connectors and steel beams in different material combinations. The concrete slab, profiled steel sheeting, and wire mesh fabric, which make up the three major components, have all been created separately. Later, all components were connected, primarily aiding in the development of the full model. Heat is transmitted from the fire through convection and radiation to the bottom of the slab. The goal is to ascertain how these parameters affect the composite deck slab's ability to carry a load.