Evaluation Of Proper Supplemental Damping For A Multi-story Steel Frame Using Capacity Spectrum Method
Author(s)
H.H. Choi, J. Kim
Abstract
Evaluation of proper supplemental damping for a
multi-story steel frame using capacity spectrum
method
H.H. Choi, J. Kim
Dept. of Architectural Engineering, Sungkyunkwan University, Korea
Abstract
In this study a straightforward procedure was developed without carrying out
time-consuming dynamic nonlinear analysis to obtain the required amount of
viscous dampers to meet given performance objectives. To this end nonlinear
static response of a structure was obtained first using capacity spectrum method,
and the required effective damping ratio was computed from the difference
between the analysis result and the target displacement. Then the amount of
required viscous damping was obtained using the effective damping ratio. Three
different types of seismic story force were considered. The procedure was
applied to a 10-story steel frame with added viscous dampers. According to the
earthquake time history analysis results, the maximum displacement of the
model structure with
Keywords
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