Experimental Investigation of the Structural Performance of Inclined Headed Shear Stud in Steel-Concrete Composite Construction

Abstract

In the building industry, steel-concrete composite constructions are becoming more important and popular for sustainable construction. A shear connector is used in steel-concrete composite structures to produce the full composite action between the two materials concrete and steel. The transverse shear that develops at the steel-concrete interface is transferred by the shear connector. The most popular kind of shear connector is headed shear stud, which is typically welded perpendicular to the steel beam's flange surface at a zero angle to the normal of the beam flanges as per current design standards including BS5400, Eurocode 4, CSA S6-14, BNBC-2020, AASHTO LRFD etc. In this study the structural performance of inclined headed shear stud in steel-concrete composite construction has been attempted to be investigated experimentally. 08(eight) test specimen were made at different inclination (0,15,30,45) degree using headed shear stud for investigating of their structural performance. The ultimate shear resistance of the 15, 30, and 45-degree inclined headed shear stud specimen is found to be reduced by 23.38%, 37.57%, and 50.45%, respectively, for inclinations along the direction of loading, in comparison to the perpendicularly oriented headed shear stud. The 15-degree, 30-degree and 45-degree inclined headed shear studs showed ductile behaviour with maximum slip values of 17.58 mm, 19.95mm and 16.29 mm; respectively will above the limiting value of 6 mm as suggested by BS5400 for ductile behaviour. Considering the shear resistance capacity, perpendicularly oriented shear stud is found better around 95.31 KN as compared to inclined oriented shear connector. Considering the ductility, inclined headed shear stud showed be their performance with the maximum slip of 19.95mm for 30º inclination.