|
Title |
Evaluation of Structural Performance of Reinforced Concrete Beams Retrofitted by Embedded FRP Rod and Metal Fittings
|
|
Keywords |
철근콘크리트 보 ; 매입형 FRP봉 ; 보강철물 ; 구조성능 ; 보강 R/C beam ; embedded FRP rod ; metal fitting ; structural performance ; retrofitting |
|
Abstract |
In this study, experimental research was carried out to evaluate the structural performance of the reinforced concrete beam using strengthening materials (embedded FRP rod, metal fittings) in existing reinforced concrete buildings. Seven reinforced concrete beams comprised of retrofitted embedded FRP rod (BCR series), embedded FRP rod with metal fittings (BCR-AC series), and standard specimen (BSS) were constructed and tested under monotonic loading. Design parameters of test specimens were amount of embedded FRP rod and metal fittings. The test results showed that the maximum load carrying capacity of specimens with embedded FRP rod (BCR series) and embedded FRP rod with metal fittings (BCR-AC series) increased by 21~55% and 21~63%, respectively, in comparison with the standard specimen BSS. BCR series test specimens failed by the adhesion slip and concrete cover separation. BCR-AC series test specimens failed by the adhesion slip due to the confining effect of metal fittings.
|