International Research Journal of Education and Technology

Developing and validating models that predict crack behavior in steel–concrete composite beams under fatigue loading. By incorporating the spacing of transverse reinforcement into the existing equations, the proposed formula offers a more realistic estimation of average crack spacing. This improvement could potentially enhance the accuracy of structural performance assessments. The beam–slab and reinforcement–concrete interface behaviors are critical under repeated loading. The model integrates fatigue behavior, a significant aspect for structural longevity, making it suitable for applications involving repetitive stress. The results derived from the model rely on efficient numerical methods, which ensure the practicality of the approach. These models can be highly beneficial for engineers in designing safer and more efficient composite structures by accurately predicting crack propagation and ensuring serviceability over the beam's lifespan. The experimental tests you conducted add substantial credibility to your models, as they show the real-world applicability of the numerical and analytical predictions.

Keywords: Crack behavior, Transverse reinforcement, Beam–slab and reinforcement, composite structures, serviceability