Strength prediction methods in shear bond behaviour of composite slabs

Abstract

Composite deck slabs are gaining wide acceptance in many countries as they promote faster, lighter and economical construction in buildings. The shear behaviour of composite deck slab is a complex phenomenon. Strength of composite deck slabs can be analyzed by different methods for restrained and unrestrained conditions. In this work various methods for determining the shear bond capacity of composite deck slab are studied by modelling composite deck slab for various shear spans in finite element analysis software. The main objective is to understand the deflection as well as slip characteristics of composite deck slab and to apply these values for calculating shear strength using different methods of the composite deck slab. A comparison between methods are also done to find out the best possible prediction method. It is found that Partial Shear Connection (PSC) method performs better than that of other methods considered.