Title: GFRP INNOVATIVE SHAPES – HALLS RIVER BRIDGE REPLACEMENT PROJECT
Abstract: In recent years, the composites industry has been developing innovative production techniques that can be exploited to improve performance of Reinforced Concrete (RC) structures. The use of fiber-reinforced polymer (FRP) reinforcement in traffic railings complements the application of non-corrosive reinforcement in transportation structures taking on the high demand of sustainable construction practices. To demonstrate commitment to innovation and sustainability and as part of the international project SEACON funded by the EU agency INFRAVATION, the Florida Department of Transportation (FDOT) and the University of Miami (UM) engaged in a state of the art bridge construction project with concrete elements reinforced and prestressed with FRP composites. One of the innovations lies in the use of glass-FRP (GFRP) stirrup and bent shapes that became available recently. The design method relies on a combination of the AASHTO-LRFD Bridge Design Specification, the AASHTO LRFD Bridge Design Guide Specifications for GFRPReinforced Concrete Bridge Decks and Traffic Railings, and the latest development in construction specifications issued by FDOT for Reinforced Concrete Traffic Barriers. The objectives included design and construction of GFRP-RC traffic railings type FDOT 32” F–Shape (F32) for the Halls River Bridge Replacement Project. GFRP stirrups and bent rebars show the versatility of the FRP composite technology by allowing the fabrication of shapes that accommodate to project requirements. As a result of the non-corrosive nature of FRP, low maintenance costs and longer life of the structure are primary benefits.
Authors: Guillermo Claure, Paolo Rocchetti, Mamunur Siddiqui, Steven Nolan, and Antonio Nanni
Conference: CAMX 2017 –Orlando