Abstract
Abstract This paper presents the experimental behavior of plane, non-strengthened and glass fiber reinforced polymer (GFRP) strengthened infilled reinforced concrete (RC) frames with low strength concrete (LSC) and normal strength concrete (NSC) under lateral reversed cyclic loading. For this purpose, eight full-scale, one-bay, one-storey plane and infilled (brick and aerated concrete blocks which are commonly used in RC construction) RC frames with LSC and NSC were produced and in-plane lateral loading tests were carried out. Test results indicate that infill walls considerably change the behavior of frames by increasing rigidity and load carrying capacity. By contrast, GFRP fabric used for strengthening of infilled RC frames improves ductility, load carrying and energy dissipation capacity of infilled frames with LSC and NSC as well. After all the test results were evaluated together, a GFRP strengthened brick infilled frame demonstrated the best performance under cyclic lateral loading.
Highlights
This paper presents the experimental behavior of plane, non-strengthened and glass fiber reinforced polymer (GFRP) strengthened infilled reinforced concrete (RC) frames with low strength concrete (LSC) and normal strength concrete (NSC) under lateral reversed cyclic loading
Test results of plane and GFRP strengthened infilled RC frames with LSC and NSC under lateral reversed cyclic loading have been discussed in terms of load carrying capacity, energy dissipation capacity, displacement ductility and stiffness degradation
Brick infill walls were crushed under reverse cyclic loading, but none of the brick remained dispersed around owing to the GFRP sheet for RCF-2 and RCF-4 test frames
Summary
While structural analysis of frame system structures under lateral loads is performed, the contribution and/or effects of infill walls are neglected. Researchers investigated the effect of the type, amount, and pattern of FRP [6,7,8,9,10,11,12,13,14,15,16] Owing to these test results, specifications [17, 18] and numerical models have been developed to estimate the seismic behavior of deficient and strengthened RC buildings [2]. Most of these studies have been fulfilled using carbon fiber reinforced polymer (CFRP) sheets. At the end of the study, drift ratio, lateral load carrying and energy dissipation capacity, stiffness degradation and displacement ductility of the RC frame were determined and suggestions are made
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