24 February 2006
24 February 2006
Fibrwrap has completed a large scale bridge strengthening project on the Jamestown - Verrazano Bridge in Rhode Island using the Tyfo SCH Carbon Fiber Fibrwrap System.
The bridge spans 7,350 feet (2,240 meters) over the west passage of the Narrangansett Bay connecting the towns of Jamestown and North Kingstown, RI.
“The Jamestown bridge project presented many difficulties, from access of the interior and exterior work area to inclement weather conditions. The field crew were especially creative in regard to overcoming these obstacles, which led to a successful completion of this high profile project.” Heath Carr, President, Fibrwrap Construction Inc.
The Verrazano bridge construction is a double cell post-tensioned girder which supports four lanes of traffic on State Highway 138. The bridge was found to be deficient in shear strength in several critical areas located near the existing column bents. Fyfe Company’s Tyfo SCH Carbon Fiber Fibrwrap System was specified to provide the additional required shear strength to the bridge structure. The SCH Fibrwrap System consists of high strength carbon fibres that are combined with an epoxy matrix and bonded to the existing structure to provide additional capacity.
The design for this project called for the FRP System to be installed to the internal and external faces of the concrete girder. This proved challenging as access to the inside of the girder was only available through manholes and the exterior of the bridge could be reached only by extensive scaffolding and lifts. The light-weight nature of the Tyfo Systems allowed for easier access by making it possible to carry all of the required materials by hand to the locations needing reinforcement.
Fibrwrap Construction Inc. uses advanced composites, or FRPs (Fibre Reinforced Polymers) to add strength and ductility to structures that are in need of upgrade, repair or rehabilitation. Structures include bridges, concrete and wood piers, buildings, pipes and other structures.
Toho Tenax is introducing a high-tensile, highly shock-resistant prepreg that incorporates carbon fibre developed for aerospace applications and carbon nanotubes (CNTs).
NTPT is collaborating with the Ecole polytechnique fédérale de Lausanne - Swiss Centre of Technology (EPFL) and other partners to research discontinuous fibre composite tubes for high performance applications.
Hexcel is promoting its range of composite materials for skis, snowboards and other high performance winter sports equipment at ISPO Munich 2018 on 28-31 January.