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| Titel |
Numerical earthquake response analysis of the Liyutan earth dam in Taiwan |
| VerfasserIn |
Z. Feng, P. H. Tsai, J. N. Li |
| 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 ; 10, no. 6 ; Nr. 10, no. 6 (2010-06-17), S.1269-1280 |
| Datensatznummer |
250008233
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| Publikation (Nr.) |
 copernicus.org/nhess-10-1269-2010.pdf |
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| Zusammenfassung |
| The dynamic response of the Liyutan earth dam to the 1999 Chi-Chi earthquake
(ML=7.3) in Taiwan was numerically analyzed. First, the staged
construction of the dam was simulated. Then, seepage analysis, considering a
60-m water level, was performed. After seepage analysis, the initial static
stress (prior to dynamic loading) was established in the dam. Both the
horizontal and vertical acceleration time histories recorded at the base of
the dam were used in the numerical simulations. The dynamic responses of the
dam were analyzed for 50 s in the time domain. The simulated results were in
agreement with the monitored data. The transfer function analysis and
Hilbert-Huang Transform (HHT) were used to compare the results and to
perceive the response characteristics of the dam. In particular, the
time-frequency-energy plots of the HHT can reveal the timing and time frame
of the dominant frequencies of the dynamic response. The influences of the
initial shear modulus and uni-axial earthquake loading were also
investigated. |
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