Project Details

Abstract

Prefabricated deck panels have also been implemented in new constructions and redecking of existing bridges as part of the Accelerated Bridge Construction technique which offers numerous advantages such as rapid construction, enhanced safety, and reductions in traffic disruptions. A composite deck is proposed in this project comprising fiber-reinforced polymer (FRP) stay-in-place (SIP) forms as bottom reinforcement, the inner concrete core which could be made from a variety of materials to meet different strength and sustainability requirements and is to be reinforced with conventional steel bars, and ultra-high-performance concrete (UHPC) as a top overlay. The system is envisioned to be suitable for both prefabricated jointed and jointless field-cast applications, and applicable for new bridge constructions as well as redecking projects. The FRP SIP forms integrate the advantages of both SIP forms such as reduced construction costs, shorter timelines, enhanced safety; and FRP reinforcement including high strength, lightweight, and immunity to corrosion. The exceptional mechanical and durability characteristics of UHPC enable protection of the inner core and its steel reinforcement against environmental stressors and contribute to structural performance. The primary objective of this research is to evaluate the design, construction, and performance of the proposed deck system under service and ultimate conditions. Specific objectives include: (a) developing final designs including geometric, material, and reinforcement details of the deck and deck connections for prefabricated systems; (b) conducting experimental and analytical investigations to evaluate the deck and deck joint performance under mechanical loading and assess conformance to the design requirements in bridge design specifications; and (c) developing design, construction, and implementation guidelines for the proposed technology.

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