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INTRODUCTION The aging or deterioration of existing R. C.(reinforced concrete) or P. C. (prestressed concrete)structures is one of the major problems that modernengineers have to face. If the flexural or shear strengthof R. C. or P. C. structures is not sufficient to maintaintheir service functions, strengthening of these struc-tures becomes necessary. To date, steel plates havebeen used to strengthen concrete members. Usingcomposite plates to strengthen R.C. or P.C. structures… 相似文献
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INTRODUCTION When the flexural load-carrying capacities of existing R. C. or P. C. structures are not sufficient for the service loads, structural strengthening becomes necessary. Using steel plates to strengthen concrete members is a traditional method (Raithby, 1980) and is still an important and popular way at the present time. Fiber-reinforced polymer (FRP) sheets and plates have been used recently as an alternative to steel plates for strengthening concrete structures be-cause th… 相似文献
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INTRODUCTION There is increased need in recent years for strengthening or rehabilitation of existing reinforced concrete structures adversely affected by overloading, construction material deterioration, seismic loads, structural deformation, etc. An effective method for increasing the shear capacity of reinforced concrete columns is the use of externally bonded carbon fiber reinforced plastic (CFRP) systems (ACI, 2002). FRP systems were first applied to reinforced concrete col-umns i… 相似文献