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http://dx.doi.org/10.5000/EESK.2008.12.2.053

Configurations of the Friction Dampers Installed in a Reinforced Concrete Shear Wall-Moment Frame System  

Park, Ji-Hun (인천대학교 건축공학과)
Kim, Gil-Hwan ((주)동양구조안전기술 설계4팀)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.12, no.2, 2008 , pp. 53-67 More about this Journal
Abstract
In this study, seismic control performance of friction dampers installed in a reinforced concrete shear wall-moment frame system, of which main lateral force resisting system is a shear wall, is investigated. Three configurations of friction dampers are investigated. One is a diagonal brace type reinforcing the shear wall directly, another is a diagonal brace type reinforcing the moment frame without the shear wall, and the other one is a vertical boundary element type installed at both ends of the shear wall. In addition, various levels of the total friction force and its distribution methods are examined. Time history analysis considering material nonlinearity is conducted for seismic loads increased by the enhanced design code compared to the initial design loads, and energy dissipation, lateral loads and structural member damages are analyzed. As a result, the shear wall-reinforcing diagonal brace type with the total friction force of 30 % of the reference friction force gives the best performance on the whole, and the distribution methods of the friction force do not have remarkable difference in effects. Also, concentrated installation in adjacent four stories shows just a little compromised control performance compared to the entire story installation.
Keywords
friction damper; seismic control; seismic retrofit; reinforced concrete building; shear wall;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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