Journal
JOURNAL OF BUILDING ENGINEERING
Volume 43, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jobe.2021.102811
Keywords
Hysteretic damper; Seismic behavior; Ductility; Energy dissipation; Resilience; FEM; OpenSees; ABAQUS
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This study introduces a novel hysteretic damper for beam-column steel connections to dissipate seismic energy, improving the ductility and seismic resilience of the entire building structure. The damper has high energy dissipation capacity without a significant decline in resistance, and is easy to fabricate, install, and replace.
In this study, a novel hysteretic damper is proposed for beam-column steel connections to dissipate seismic energy. The proposed system is classified as a low-damage device and the energy dissipation in the connection is provided through the bending deformations in hourglass shape steel pins inside the hysteretic damper. At the first stage, full-scale experimental prototypes have been fabricated and tested in the dynamic testing laboratory. In the next stage, micro- and macro-modelings of the proposed device calibrated through the experimental testing have been investigated using ABAQUS and OpenSees platforms, respectively. Both experimental and finite element simulations indicated that the proposed damper has a high capacity of energy dissipation without a significant decline in the resistance through loading cycles. Applying this damper to the connection helps all structural members including beams and columns to maintain in the elastic region, and will improve the ductility and seismic resilience of the whole building structure. The proposed damper has the easiness of fabrication, installation, and replacement.
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