Abstract
To improve the brittle column behavior during seismic excitation, benefits of using steel fiber reinforced concrete in columns were investigated. For experimental study, eight specimens were used to evaluate the shear enhancement effect. The variables in this study were amount of shear reinforcement ratio (i.e., 0.26, 0.21 <TEX>$\%$</TEX>) and steel fiber volume fraction (i.e., 0.0, 1.0, 1.5, 2.0<TEX>$\%$</TEX>). The test results indicated that the maximum enhancement of shear capacity was shown in <TEX>$1.5\%$</TEX> steel fiber content. In addition, to predict the maximum shear strength, equations of ACI 318-99, AIJ MB, NZS 3101, Hirosawa and Priestley were reviewed. From the parametric and regression study, modified Priestely equation was proposed by adding steel fiber effect.
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