Development of a Hybrid Posttensioning and Integrated Shear Connector Mechanism for Enhancing the Structural Performance of Composite Fiber Deck–Concrete Systems

ABSTRACT This study introduces a novel hybrid mechanism that integrates posttensioning tendons with advanced shear connectors to enhance the structural performance of composite fiber deck–concrete systems. The primary objective is to overcome challenges such as interface debonding, inefficient load transfer, and excessive deflection that often compromise the durability and efficiency of existing composite structures. To evaluate the proposed system, a series of experimental tests were conducted on scaled composite specimens incorporating the hybrid mechanism. Parameters such as load‐bearing capacity, midspan deflection, shear resistance, and energy absorption were systematically measured under both static and dynamic loading conditions. Finite element modeling and analytical simulations were also employed to validate and complement the experimental findings. The results demonstrated that the hybrid system achieved up to a 30% increase in load‐carrying capacity and a 20% reduction in deflection compared to traditional configurations. These findings confirm the effectiveness of the hybrid approach in enhancing structural stiffness, promoting uniform stress distribution, and improving the overall resilience and serviceability of fiber‐reinforced composite deck systems.