Shear-bond resistance of composite deck-slabs

Abstract

This paper presents an ultimate shear-bond equation for composite deck-slabs failing in shear-bond. The equation is based on recent experimental evidence of composite deck-slabs exhibiting early end-slip prior to ultimate load, and contains the steel deck thickness as a parameter, which other existing equations do not. The presence of the steel deck thickness parameter can result in a reduction of up to 75% of the presently required number of laboratory performance tests. A total of 196 test results was used to substantiate as well as to compare the results of the equation developed. The results of the developed equation were, in general, within the commonly accepted scatter range of ±15% of the corresponding experimental results. Key words: bonding, composite structures, shear strength, shear tests, slabs, structural engineering, ultimate strength, steel decking.