Abstract

This paper considered the continuous rigid frame bridge strengthening with prestressed CFRP sheets as the researched object. Through changing the tensioning value of the prestressed CFRP sheets, to analyze and compare the deflection and the inclined crack width of prestressed concrete box Girder Bridge. The comparison showed that the prestressed CFRP sheets can debase the inclined crack width and enhance the inclined carrying capacity of prestressed concrete box Girder Bridge, but cannot change stiffness of the structure largely in the long-span bridge.

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