Evaluation of the Regional Bridge (DonHoiLord) for CFRP Structural Strengthening

Abstract

DonHoiLord Bridge or the Regional Bridge is located on a tourism/industrial rural road in Sumutsongkram province. The Sumutsongkram Rural Road Office, Department of Rural Roads evaluated the bridge structure by performing full load tests. The structural responses were measured by using both linear displacement transducers (LVDTs) and strain gages. The test results were then used as a part of information for design strengthening of the bridge using carbon fiber reinforced polymers (CFRP). The full load test was then performed after bridge strengthening. The test results showed that the mid-span deflections including strain levels were reduced. This may conclude that the CFRP strengthening method is the effective method to reduce both stress level and deflection imposed on the bridge structure.