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Composite Strips with Various Anchor Systems for Retrofitting Concrete Beams
Yoshitake, Isamu,Yumikura, Keiyu,Mimura, Yoichi,Kim, Yail-J. Korea Concrete Institute 2011 International Journal of Concrete Structures and M Vol.5 No.1
This paper presents the performance of anchor systems for reinforced concrete beams retrofitted with carbon fiber reinforced polymer (CFRP) strips. Nine simply-supported beams are tested with various anchor systems such as steel hooks, steel plates with anchor bolts, CFRP anchor plates, and near-surface mounted (NSM) CFRP strip. The effects of these anchors on the behavior of the retrofitted beams are discussed, including load-carrying capacity, failure modes, and ductility characteristics. Test results indicate that end-anchorage is an important parameter when a CFRP-retrofit design is conducted. Mechanical bolts and NSM CRFP anchors are recommended.
Composite Strips with Various Anchor Systems for Retrofitting Concrete Beams
Isamu Yoshitake,Yail J. Kim,Keiyu Yumikura,Yoichi Mimura 한국콘크리트학회 2011 International Journal of Concrete Structures and M Vol.5 No.1
This paper presents the performance of anchor systems for reinforced concrete beams retrofitted with carbon fiber reinforced polymer (CFRP) strips. Nine simply-supported beams are tested with various anchor systems such as steel hooks, steel plates with anchor bolts, CFRP anchor plates, and near-surface mounted (NSM) CFRP strip. The effects of these anchors on the behavior of the retrofitted beams are discussed, including load-carrying capacity, failure modes, and ductility characteristics. Test results indicate that end-anchorage is an important parameter when a CFRP-retrofit design is conducted. Mechanical bolts and NSM CRFP anchors are recommended.