Abstract
Technology Research Center, Samsung C&T Corporation, Seoul 137-956, KoreaABSTRACT High-strength concrete corbels with varying percentage of steel fibers and two different anchorage types (weldingto transverse bar, headed) for the main tension tie were constructed and tested. The results showed that performance in terms ofload carrying capacities, stiffness, ductility, and crack width was improved, as the percentage of steel fibers was increased. In addi-tion, the corbel specimens in which headed bars were used as the main tension tie reinforcements showed superior load carryingcapacities, stiffness, and ductility compared to the corbel specimens in which the main tension ties were anchored by welding tothe transverse bars. From the test results, it is expected that load carrying capacities, durability, and constructibility of high strengthconcrete corbels would be improved by using steel fibers and headed bars. Experimental results presented in this paper were alsocompared with various prediction models proposed by researchers and presented in codes. The truss model proposed by Fattuhiprovides fairly good predictions for fiber reinforced high-strength concrete corbels.Keywords : corbels, steel fibers, headed bars, high strength concrete
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