Repair of Earthquake Damaged Bridge Columns with Fractured Bars

2013PDFTech ReportNUTC R310DTRT06-G-0014Earthquake resistant designBridge designColumnsDefectsDeformationRepairingResearch HubMissouriUnited StatesMissouri University of Science and Technology. Center for Transportation Infrastructure and SafetySneed, LesleyMissouri University of Science and Technology. Center for Transportation Infrastructure and SafetyUnited States. Dept. of Transportation. Research and Innovative Technology AdministrationUS Transportation CollectionThe objective of this study is to repair three, half-scale RC bridge columns that will be tested to failure under slow cyclic loading. These columns will have fractured longitudinal and transverse steel. The ultimate goal is to develop repair methods for these columns using different techniques. In the first two columns, different Caltrans approved ultimate splices will be used, and in the third column, an enlarged section will be built in the plastic hinge area. The target performance for the repaired columns is to restore the lateral load and ductility capacity to the level that is comparable to that of the original columns