2020 Volume 26 Issue 63 Pages 549-554
When steel fibers is added into concrete mix, the tension stiffening effect of the resulting concrete is thought to be different from normal concrete. At first, pull-out tests of reinforcing bars from steel fiber reinforced and normal concretes were carried out. Subsequently, a 3D finite element analysis was conducted to verify softening characteristics of the steel fiber reinforced concretes. And then, a 3D finite element analysis of beam-column joints made of steel fiber reinforced and normal ultra-high strength concretes was conducted using a material model deduced from the pull-out tests. The analytical results generally agreed well with the experimental data.
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