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[VI-465] Detailed investigation and repair design of re-degraded carbon fiber reinforced bridge

〇shingo kasai¹, hiroaki takamoto¹, ryosuke saho¹, yoshiyuki sugiura¹ (1.kisojibankonsarutantsu)

Keywords:Carbon fiber reinforced sheet, Bridge waterproofing, Water leakage, Prestressed concrete bridge

This bridge is a pretensioned hollow floor slab bridge located at the intersection in front of the park where there is heavy traffic for route buses and general vehicles. The main line of the main bridge (below the main girder) was reinforced with carbon fiber sheets in 2002 with the aim of improving the load carrying capacity against an increase in traffic volume. The occurrence of (swelling) etc. was confirmed. In this report, we report the cause of deformation of carbon fiber reinforced sheet and the repair plan for effective maintenance and management by detailed investigation.