EXPERIMENTAL STUDY ON THE EFFECT OF THIN MORTAR LAYER AND STUD SPACING ON COMPOSITE ACTION BETWEEN MAIN GIRDER AND SLAB OF COMPOSITE GIRDER APPLYING PRECAST SLAB

Abstract

In this study, in order to clarify the composite action between main girder and precast slab with thin mortar layer, positive bending experiment was carried out with headed stud spacing as a parameter. As the result, it was proven that it had the same composite action as the composite girder with full interaction, even if the headed stud maximum interval was expanded to 1000 mm, if it is to the slip limit. In the future, this paper carries out analytical examination taking the thickness of thin mortar layer, headed stud spacing, headed stud design as parameters, and establishes a composite girder design method considering the composite action between main girder and floor slab in the precast floor slab with thin mortar layer.