Rapid Restoration of Deteriorated Prestressed Concrete Bridges Using Mechanically Fastened Fiber Reinforced Polymer
ASCE Innovation Contest Event
Contributing USMA Research Unit(s)
Civil and Mechanical Engineering, Center for Innovation and Engineering
This presentation introduces a methodology to rapidly address deteriorated prestressed concrete bridge superstructures using prestressed mechanically-fastened fiberreinforced polymer (MF-FRP). Currently, departments of transportation (DOTs) must post load restrictions or closures on bridges with deteriorated prestressed concrete superstructures that can no longer carry original design loads. These posted restrictions and closures result in detours that increase travel time and vehicle operating costs for detoured vehicles, impacting commerce, public transportation, and emergency services. Often, load restrictions and closures must remain in place for several years to allow for budgeting, design, and contracting cycles prior to scheduling and completion of permanent repairs or superstructure replacement which must occur to remove posted restrictions. Therefore, a methodology which is capable of restoring prestress losses and strength reduction in mild to moderately deteriorated prestressed concrete bridge superstructures such that the useful service life of the bridge can be extended for 3 to 5 years while a permanent solution is planned and budgeted is desired. Further, a retrofit solution that can be installed rapidly by DOT maintenance personnel, can immediately restore traffic upon installation, and can be easily inspected and maintained is necessary for successful implementation into existing DOT policies and procedures.
McCoy, Brad C.; Seracino, Rudolf; and Lucier, Gregory W., "Rapid Restoration of Deteriorated Prestressed Concrete Bridges Using Mechanically Fastened Fiber Reinforced Polymer" (2019). West Point Presentations and Posters. 17.