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| Titel |
Non-linear finite element analysis for prediction of seismic response of buildings considering soil-structure interaction |
| VerfasserIn |
E. Çelebi, F. Göktepe, N. Karahan |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 11 ; Nr. 12, no. 11 (2012-11-26), S.3495-3505 |
| Datensatznummer |
250011205
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| Publikation (Nr.) |
 copernicus.org/nhess-12-3495-2012.pdf |
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| Zusammenfassung |
| The objective of this paper focuses primarily on the numerical approach
based on two-dimensional (2-D) finite element method for analysis of the
seismic response of infinite soil-structure interaction (SSI) system. This
study is performed by a series of different scenarios that involved comprehensive
parametric analyses including the effects of realistic material properties
of the underlying soil on the structural response quantities. Viscous
artificial boundaries, simulating the process of wave transmission along the
truncated interface of the semi-infinite space, are adopted in the
non-linear finite element formulation in the time domain along with
Newmark's integration. The slenderness ratio of the superstructure and the
local soil conditions as well as the characteristics of input excitations
are important parameters for the numerical simulation in this research. The
mechanical behavior of the underlying soil medium considered in this
prediction model is simulated by an undrained elasto-plastic Mohr-Coulomb
model under plane-strain conditions. To emphasize the important findings of
this type of problems to civil engineers, systematic calculations with
different controlling parameters are accomplished to evaluate directly the
structural response of the vibrating soil-structure system. When the
underlying soil becomes stiffer, the frequency content of the seismic motion
has a major role in altering the seismic response. The sudden increase of
the dynamic response is more pronounced for resonance case, when the
frequency content of the seismic ground motion is close to that of the SSI
system. The SSI effects under different seismic inputs are different for
all considered soil conditions and structural types. |
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