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http://dx.doi.org/10.12989/smm.2020.7.3.167

Behavior of SFRC interior beam-column joints under cyclic loading  

Khalaf, Noor Ayaad (Department of Civil Engineering, Al-Nahrain University)
Qissab, Musab Aied (Department of Civil Engineering, Al-Nahrain University)
Publication Information
Structural Monitoring and Maintenance / v.7, no.3, 2020 , pp. 167-193 More about this Journal
Abstract
In this paper, the behavior of interior steel fiber reinforced concrete beam - column joints (BCJs) under cyclic loading is investigated. An experimental program including tests on twelve reinforced concrete (BCJs) specimens under cyclic loading was carried out. The test specimens are divided into two groups having different geometry: group (G1) (symmetrical BCJs specimens) and group (G2) (nonsymmetrical BCJs specimens). The parameters considered in this study are the steel fibers (SFs) content by volume of concrete (Vf), the spacing of shear reinforcement at the joint region, and the area of longitudinal flexural reinforcement. Test results show that the addition of 0.5% SFs with stirrups spacing S=Smax has effectively enhanced the overall performance of BCJs with respect to energy dissipation, ductility ratio, spreading and width of cracks. The failure of specimens is governed mainly by the formation of a plastic hinge at the face column and outside the beam-column junction. Secondary shear cracks were also observed in the beam-column junctions.
Keywords
interior beam - column joints; steel fibers; ductility ratio; energy dissipation capacity; cyclic loading;
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Times Cited By KSCI : 8  (Citation Analysis)
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