Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anchorage systems for masonry walls strengthened with FRP composite laminates
Out-of-plane strength and ductility of unreinforced masonry walls may be enhanced by externally bonded FRP reinforcement. In this study, an attempt was made to investigate the effectiveness of three anchorage systems to prevent premature failure due to FRP debonding which, in turn, would lead to significant increase in the load carrying capacity. Glass fiber fabric and carbon fiber sheet were used with epoxy resin. Fiber Reinforced Polymer system, consisting of fabrics of high performance fibers, externally bonded to masonry walls provides significant increases in load carrying capacity. Specimens without any anchorage measures failed prematurely by debonding of the FRP reinforcement from the masonry substrate while all other specimens with an appropriate anchorage system, that is, improved bond (surface grinding), fiber bolts or steel bar anchorage systems, failed either by crushing of brick in compression or by punching shear. It can be concluded that the combination of surface grinding and fiber bolt anchorage system would result in the highest strength enhancement. Steel bar anchorage system leads to lower strength as well as the ductility of the wall due to the localised failure along the steel bar.
Anchorage systems for masonry walls strengthened with FRP composite laminates
Out-of-plane strength and ductility of unreinforced masonry walls may be enhanced by externally bonded FRP reinforcement. In this study, an attempt was made to investigate the effectiveness of three anchorage systems to prevent premature failure due to FRP debonding which, in turn, would lead to significant increase in the load carrying capacity. Glass fiber fabric and carbon fiber sheet were used with epoxy resin. Fiber Reinforced Polymer system, consisting of fabrics of high performance fibers, externally bonded to masonry walls provides significant increases in load carrying capacity. Specimens without any anchorage measures failed prematurely by debonding of the FRP reinforcement from the masonry substrate while all other specimens with an appropriate anchorage system, that is, improved bond (surface grinding), fiber bolts or steel bar anchorage systems, failed either by crushing of brick in compression or by punching shear. It can be concluded that the combination of surface grinding and fiber bolt anchorage system would result in the highest strength enhancement. Steel bar anchorage system leads to lower strength as well as the ductility of the wall due to the localised failure along the steel bar.
Anchorage systems for masonry walls strengthened with FRP composite laminates
Verankerungssysteme für mit FRP-Verbundlaminaten verstärkte, gemauerte Wände
Tan, K.H. (Autor:in) / Patoary, M.K.H. (Autor:in) / Roger, C.S.K. (Autor:in)
Journal of Reinforced Plastics and Composites ; 22 ; 1353-1371
2003
19 Seiten, 5 Bilder, 3 Tabellen, 13 Quellen
Aufsatz (Zeitschrift)
Englisch
Mauerwerk , Festigkeitserhöhung , mechanische Verstärkung , carbonfaserverstärkter Kunststoff , glasfaserverstärkter Kunststoff , Epoxidharz , Anker (Verbindungselement) , Bolzenverbindung , Klebverbindung , Einbettung , Stange , Oberflächenbehandlung , Schleifen , Verbinden nichtartgleicher Werkstoffe , Mehrlagenlaminat , Verbundwerkstoff , tragende Mauer
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