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Ultra-High Performance Concrete (Uhpc) Deck-To-Girder Connection For Accelerated Bridge Construction, Mostafa Abo El-Khier
Ultra-High Performance Concrete (Uhpc) Deck-To-Girder Connection For Accelerated Bridge Construction, Mostafa Abo El-Khier
Department of Construction Engineering and Management: Dissertations, Theses, and Student Research
Precast concrete deck systems have been successfully used for Accelerated Bridge Construction. In most systems, special deck-to-girder connections are designed to achieve structurally composite sections. These connections require tight production/erection tolerances that complicate deck and girder fabrication and compromise the economics of these systems. This study presents a new precast concrete deck-to-girder connection that takes advantage of the excellent mechanical, workability, and durability properties of ultra-high performance concrete (UHPC) to simplify precast concrete deck and girder fabrication and erection. Typical girder shear reinforcement is terminated below the soffit of deck panels to eliminate any conflicts with deck reinforcement and relax …
Precast Concrete Deck-To-Girder Connection Using Uhpc, George Morcous, Mostafa Abo El-Khier
Precast Concrete Deck-To-Girder Connection Using Uhpc, George Morcous, Mostafa Abo El-Khier
Nebraska Department of Transportation: Research Reports
The implementation of ultra-high-performance concrete (UHPC) in bridge construction has been growing rapidly in the last two decades due to its excellent mechanical properties, workability, and durability. This report presents a new UHPC connection between precast concrete deck panels and bridge girders that eliminates changes to the design and production of girder shear connectors commonly used in conventional cast-in-place concrete deck construction. In conventional construction, girder shear reinforcement or studs are extended into the cast-in-place concrete deck to transfer interface shear and create composite section. In the new connection, girder shear reinforcement or studs are kept underneath the deck panels, …