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    The Effect of Steel Plates with Shear Studs for Weak Column-Strong Beam Connections in the Reinforced Concrete Structures under Earthquake Effect
    (Wiley, 2011) Buyukkaragoz, A.; Arslan, A.
    In this study, the effect of steel plates with shear studs used in the weak columnstrong beam connections was investigated both experimentally and analytically. Five RC specimens were tested under cyclic loading in the experimental programme. Steel plates with shear studs in the column were used along the connection area. The specimens were derived from the exterior joint of a frame. As the main parameters, the width of shear stud heads and their spacing on the steel plates were changed to investigate their effects on the weak column. The test results confirmed that shear studs improved the strength and stiffness of the specimens. The control specimen collapsed because of joint failure, while the other four specimens collapsed because of bending at the bottom of the beam showing ductile behaviour. The comparison of experimental results with the analytical results obtained from ANSYS finite element programme showed similar outputs from the aspects of behaviour.
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    NUMERICAL ANALYSIS OF AERATED CONCRETE AND HOLLOW BRICK WALLS STRENGTHENED WITH STEEL-FIBERED CONCRETE PANELS
    (Maik Nauka/Interperiodica/Springer, 2021) Buyukkaragoz, A.; Kalkan, I.
    Results of experimental and numerical investigations of walls reinforced with steel fibered concrete panels are reported. Eighteen walls produced by using hollow bricks and aerated concrete are studied in experiments; these walls are strengthened with concrete panels produced by using steel fibers at certain ratios. Six unreinforced reference specimens are also tested. Load-displacement curves are derived, the maximum stresses and displacements are determined, and the cracking process is studied. The experimental results are compared with those obtained from modeling.
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    A Numerical Study of the Flexural Behavior of Concrete Beams Reinforced with AFRP Bars
    (Springer, 2013) Buyukkaragoz, A.; Kalkan, I.; Lee, J. H.
    In this study, analytical and numerical investigations were extensively conducted to evaluate the flexural behavior of concrete beams reinforced with aramid fiber-reinforced polymer (AFRP) rebars. The AFRP-reinforced concrete beams were analyzed using the separated finite element method containing different elements for concrete and reinforcement. In addition, this study used two different effective moment of inertia expressions to estimate the load-deflection responses and the service-load deflections of the beams. The service-load deflections of the AFRP-reinforced concrete beams obtained from the finite element analysis were in close agreement with those from the effective moment of inertia expressions. The numerical ultimate moments also correlated well with the analytical values of concrete stress-strain models. Numerical analyses, which hardly predict the sudden reduction in the flexural rigidity of FRP-reinforced concrete beams due to the crushing of cover concrete, were shown to provide somewhat conservative deflection estimates.