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Title |
Development of Frictional Wall Damper and Its Analytical Applications in R/C frame Structures
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Authors |
조창근 ; 박문호 ; 권민호 ; 강구수 ; 서상길 |
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Keywords |
벽식마찰감쇄기; 데프론 슬라이더; R/C 비탄성 골조모델; 내진성능개선; 동적해석; frictional wall damper; teflon slider; R/C inelastic frame model; seismic retrofit; dynamic analysis |
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Abstract |
A wall type friction damper is newly Proposed in this paper to improve the performance of R/C framed structures under earthquake loads. Although traditional dampers are usually placed as bracing members, the application ot bracing-type dampers into R/C structures is not as simple as those of steel structures due to the connection between R/C members and dampers and the stress concentration in connection region. Proposed damper is consisted of Teflon-sheet slider and R/C shear wall. The damper can also avoid stress concentration and reduce P-Δ effect. To evaluate the performance of proposed damper, nonlinear dynamic analyses are carried on 10 story and 3 bay R/C structures with numerical model for the damper. It is shown that the damper reduces the inter-story drifts and the time-historic responses; especially the damper prevents from forming plastic hinges on the lower columns.
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