Seismic Fragility Evaluation of RC Frame Structures Retrofitted with Controlled Concrete Rocking Column and Damping Technique |
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Authors: | Hwasung Roh Gian Paolo Cimellaro |
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Affiliation: | 1. Department of Civil and Environmental Engineering , Hanyang University , Gyeonggi-do , Republic of Korea marsroh@hanyang.ac.kr;3. Department of Civil and Geotechnical Engineering , Politecnico di Torino , Torino , Italy |
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Abstract: | Acceleration response of simple yielding structure is proportional to its own weight, but it is limited by yield strength. Thus, using rocking columns that reduces global yield strength, a limited acceleration is achieved. However, the displacement becomes large due to lower strength and higher inelasticity, but it can be controlled by adding damping. Performing fragility analyses, the seismic response of R/C frame structures with rocking columns and viscous dampers is investigated. Near field MCEER ground motions are considered. The analyses show that the story accelerations are reduced by using rocking columns, while the story displacements are controlled by using viscous dampers. |
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Keywords: | Seismic Fragility Evaluation Controlled Concrete Rocking Columns Weakened Structures Viscous Damping MCEER Ground Motions Story Response Structural Control |
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