DefinePK

Abstract

The efficiency of composite beam systems heavily relies on the strength and ductility of shear connectors. This study investigates the mechanical performance of headed stud shear connectors through 42 push-out tests designed to evaluate their load-slip characteristics. Various parameters were considered including connector type, concrete strength, sheet thickness, and stud arrangement. The tests were performed using a 1000 kN Universal Testing Machine (UTM) with precise instrumentation for load and slip measurements. Results indicate a direct relationship between concrete grade and connector stiffness, while failure modes varied from stud shearing to concrete crushing. A three-stage load-slip behavior was identified, offering insights into the progressive damage and eventual failure of the interface bond. The findings support optimized connector design in composite structures for enhanced structural integrity.