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http://dx.doi.org/10.5000/EESK.2018.22.7.361

Seismic Performance Evaluation of Structures Retrofitted with Viscoelastic-Slit Hybrid Dampers  

Kim, Minsung (Department of Civil and Architectural Engineering, Sungkyunkwan University)
Xu, Zhaodong (Department of Civil Engineering, Southeast University)
Kim, Jinkoo (Department of Civil and Architectural Engineering, Sungkyunkwan University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.22, no.7, 2018 , pp. 361-367 More about this Journal
Abstract
This study investigates the seismic performance of a hybrid seismic energy dissipation device composed of a viscoelastic damper and a steel slit damper connected in parallel. A moment-framed structure is designed without seismic load and is retrofitted with the hybrid dampers. The model structure is transformed into an equivalent simplified system to find out optimum story-wise damper distribution pattern using genetic algorithm. The effectiveness of the hybrid damper is investigated by fragility analysis of the structure with and without the dampers. The analysis results show that after seismic retrofit the probability of reaching damage states, especially the complete damage state, of the structure turn out to be significantly reduced.
Keywords
Energy dissipation device; Seismic retrofit; Optimum design; Fragility analysis;
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