Publikationsdatum:
2004
Beschreibung:
A previously developed simplified model of ground motion amplification is
applied to the simulation of acceleration time histories at several soft-soil sites in
the Valley of Mexico, on the basis of the corresponding records on firm ground. The main
objective is to assess the ability of the model to reproduce characteristics such as
effective duration, frequency content and instantaneous intensity. The model is based on
the identification of a number of parameters that characterize the complex firm-ground
to soft-soil transfer function, and on the adjustment of these parameters in order to
account for non-linear soil behavior. Once the adjusted model parameters are introduced,
the statistical properties of the simulated and the recorded ground motions agree
reasonably well. For the sites and for the seismic events considered in this study, it
is concluded that non-linear soil behavior may have a significant effect on the
amplification of ground motion. The non-linear soil behavior significantly affects the
effective ground motion duration for the components with the higher intensities, but it
does not have any noticeable influence on the lengthening of the dominant ground period.
Schlagwort(e):
Site amplification
;
Peak ground acceleration
;
Earthquake engineering, engineering seismology
;
Non-linear effects
;
site
;
effects,
;
ground
;
motion,
;
transfer
;
function
;
non-linear
;
soil
;
response,
;
Monte
;
Carlo
;
simulation
;
Statistical investigations
;
Barcena
;
EESD
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