Bu çalışmada betonarme çerçeveye harçsız tuğlalı duvar etkisi nümerik analiz yoluyla araştırıldı. Harçsız tuğlalı duvarlar, geleneksel duvarlar kadar çerçeveyi rijitleştirmeden adeta bir sürtünmeli sönümleyici gibi görev yaparak, çerçevenin enerji tüketme kapasitesini arttırmaktadır ve bu konuda mevcut çalışmalar vardır. Bu çalışmada ayrıca duvarın çerçeveye bağlantısının rijit veya esnek olmasının çerçeve davranışına etkisi araştırılmıştır. Rijit birleşim için harç, esnek birleşim için ise poliüretan tabanlı yapıştırıcı kullanılmıştır. ABAQUS programı ile çerçevelere yapılan 20mm (%2.5 yanal öteleme oranı) itme analizlerinde esnek birleşim kullanılmasının kilitli duvarlı çerçevenin taşıdığı yükü arttırdığı, duvar ile çerçeve arasındaki bölgede gerilme yığılmalarını azaltarak duvarın daha az hasar almasını sağladığı görülmüştür. Duvarsız çerçeveye nazaran, harçsız tuğlalı çerçevenin enerji tüketim kapasitesi daha fazla olmuştur. In this study the effect of a wall with dry stack masonry to a RC frame was investigated through numerical analysis. Dry stacked walls increases the energy dissipation of frames by acting as frictional energy dissipation devices, without increasing the stiffness of frame like a traditional wall and many studies exist about this. In this study, also, the effect of the joint between wall and frame was investigated by using flexible and stiff joint. For stiff joint mortar was used, and for flexible joint, a polyurethane based adhesive was used. In the ABAQUS analysis in which the RC frames were pushed 20mm (%2.5 drift ratio), it was concluded that using flexible joint increases the load carried by frame, and decreased the damage in the wall by decreasing the stress concentrations in the region between wall and frame. When compared with the RC frame without walls, the energy dissipation of dry stacked masonry infilled frame is higher.
In this study, a practical seismic retrofit method for RC frames was proposed. For this purpose, a quasi-static loading was applied to 8 different type of RC frames in finite elements analysis software, Abaqus and frames were pushed 45mm laterally. High strength fiber reinforced lightweight concrete panels were used to strengthen infill walls inside the RC frames. To apply them to the walls, epoxy binder and polyurethane binder were used and their behaviour were compared. Using panels increased the lateral load capacity of whole frame according to the numerical analysis performed with Abaqus. In the worst case, retrofitted frame carried approximately 2 times of the capacity of traditionally infilled frame. In the best case, RC frame carried 4.29 times of the lateral load traditionally infilled frame carried. Polyurethane binder prevented the separation of panels from walls and provided a ductile behaviour to frames even in large drifts.
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