SHRINKAGE BEHAVIOUR MODELLING OF STEEL-CONCRETE COMPOSITE BEAMS WITH VARYING DEGREE OF CONNECTION

The work introduced in this article is a theoretical study of the behaviour of composite beams with respect to the shrinkage of concrete. In fact, our contribution resides essentially in consideration of the degree of connection (N/Nf) between the slab and steel beam. While using the theory of the linear viscoelasticity of the concrete, and on the basis of the Rate of Creep Method of concrete, in proposing an analytical model, made up by a system of two linear differential equations, emphasizing the effects caused by shrinkage on the resistance of a steel-concrete composite beams regardless degree of connection employed.