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Title |
Seismic Capacity of Non-seismic Designed RC Framed Building Retrofitted by CBD System
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Authors |
허무원(Moo-Won Hur) ; 이상현(Sang-Hyun Lee) ; 천영수(Young-Soo Chun) |
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DOI |
http://dx.doi.org/10.4334/JKCI.2015.27.6.625 |
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Keywords |
CBD 시스템 ; 강도저하 ; 강성저하 ; 에너지소산면적 ; 보강된 CBD system ; strength degradation ; stiffness degradation ; energy disspation ; strain distribution |
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Abstract |
In this study, a comparative analysis have been conducted to examine seismic reinforcement effect of a school building that is designed with a CBD (Channel Beam Damper) system supported by H-frame with existing non-seismic RC frame. As a result of experiment, seismic reinforcement specimen with CBD system showed hysteretic characteristics of a large ellipse with great energy dissipation ability and increased strength and stiffness, while non-seismic design specimen showed rapid reduction in strength and brittle shear failure at top and bottom of the left and right column. In addition, comparing the stiffness reduction between the two specimens, CBD system was effective in preventing the reduction of stiffness. Energy dissipation ability of specimen reinforced by CBD system was about 4.0 times higher than the non-reinforced specimen. Such enhancement in energy dissipation ability could be considered as the result of improved strength and deformation for further application in designing of seismic reinforcement.
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