Deformation studies on steel-concrete composite T beam sections

Abstract

The composite structures are extensively used for its high specific strength, structural stiffness and less weight. A composite beam comprises of concrete slab at the top with a steel beam of I shaped cross section beneath the slab. In this research a three dimensional composite beam is modelled to study the variation in thickness of concrete slab and steel section subjected to uniformly distributed load using finite element analysis. The support conditions of the structure are modelled as fixed beam on both the ends. Relative study is proposed on three different concrete slab thicknesses of 80,100 and 120mm respectively with steel I section beams. The parameters involves total deformation, maximum principal stress, shear stress, normal elastic strain and strain energy in the composite T beam at midspan are reported. It also attempt to conclude that the longitudinal compressive stresses in concrete slab had a non-uniform distribution of stresses along the cross section and it also produces positive bending moment. Shear stress across the sections must be checked to ensure that concrete components act compositely.The composite structures are extensively used for its high specific strength, structural stiffness and less weight. A composite beam comprises of concrete slab at the top with a steel beam of I shaped cross section beneath the slab. In this research a three dimensional composite beam is modelled to study the variation in thickness of concrete slab and steel section subjected to uniformly distributed load using finite element analysis. The support conditions of the structure are modelled as fixed beam on both the ends. Relative study is proposed on three different concrete slab thicknesses of 80,100 and 120mm respectively with steel I section beams. The parameters involves total deformation, maximum principal stress, shear stress, normal elastic strain and strain energy in the composite T beam at midspan are reported. It also attempt to conclude that the longitudinal compressive stresses in concrete slab had a non-uniform distribution of stresses along the cross section and it also produces positive bendin...