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http://dx.doi.org/10.5000/EESK.2002.6.3.087

Seismic Retrofit of Asymmetric.Elasto-Plastic Structure Using Viscous Dampers  

김진구 (성균관대학교 건축공학과)
방성혁 (한국기술신용정보)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.6, no.3, 2002 , pp. 87-93 More about this Journal
Abstract
A procedure for figuring out proper amount of additional viscous damping required to keep the inelastic deformation of a plan-wise asymmetric structure within a given target performance point was developed. To this end the behavior of an asymmetric nonlinear structure after yielding is investigated. Then a formula for the required amount of equivalent damping was derived based on the ductility demand of the structure. The procedure was applied to a five-story asymmetric structure subjected to an earthquake load. According to the comparison with the results from the dynamic time-history analysis, the structure with viscous dampers installed in accordance with the proposed procedure showed satisfactory seismic performance in both the stiff and the flexible edges.
Keywords
plan-wide symmetric structure; viscous damper; ductility demand; equivalent damping; displacement-based design;
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