Enhancing Structural Performance of Steel-Concrete Composite Beams: A Review

Abstract

Steel-concrete composite beams combine steel’s tensile strength with concrete’s compressive strength, offering superior structural performance. This review highlights external post-tensioning, which enhances load capacity by up to 106%, and the importance of shear connection, recommending 80% or higher for optimal fatigue resistance. Fatigue behavior is critical, particularly for shear connectors, where failure often initiates at welded stud roots. Finite Element Modeling (FEM) aids in analyzing nonlinear behavior, validating experiments, and optimizing post-tensioning forces. Additionally, Fiber Reinforced Polymers (FRPs) improve durability and corrosion resistance. Future research should refine fatigue-resistant designs, optimize shear configurations, and integrate advanced materials for resilient composite structures.