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Viewing report
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Estimation of Seismic Response Demands for R/C
Framed Structures. Edition No. 1
VDM Publishing House, Sep 2008, Pages: 172
This work correlates the linear to the nonlinear
seismic responses. Different nonlinear effects were
evaluated, and predictions of the seismic demands
were made with acceptable reliability for two
performance levels. The first of which was the
UBC'97, which represents seismic events that have a
10% probability of exceedance in 50 years (10/50).
The other level was the Near-Field strong ground
motion (N-F).
A set of three correction bias factors were then
evaluated, which correct for individual nonlinear
effects. Four response parameters were investigated
which are the story displacements, drift angles,
ductility demands, and shears. It was found that the
response parameters are generally overestimated in
the linear elastic analysis, compared to the
bilinear models. The stiffness degradation and
strength deterioration reduce the difference between
the linear and nonlinear responses. The P-Delta
effects, however, were found to have negligible
participation to the response of the building under
both groups of earthquakes. It is believed that the
choice of structural system is causing this behavior.
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