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| Titel |
Nonlinear earthquake behaviour of highway tunnels |
| VerfasserIn |
B. Sevim |
| 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 ; 11, no. 10 ; Nr. 11, no. 10 (2011-10-13), S.2755-2763 |
| Datensatznummer |
250009730
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| Publikation (Nr.) |
 copernicus.org/nhess-11-2755-2011.pdf |
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| Zusammenfassung |
| This paper describes the Arhavi Highway Tunnel which has two tubes, its
geometrical properties, finite element model, and the nonlinear earthquake
behaviour under a huge ground motion considering soil-structure interaction.
The Arhavi Highway Tunnel is one of the tallest tunnels constructed in the
Black Sea region of Turkey as part of the Coast Road Project. The tunnel has
two tubes and each of them is about 1000 m tall. In the study, the modal
analyses of the tunnel considering soil-structure interaction are performed
and natural frequencies and mode shapes are obtained. Then, nonlinear transient analysis
of the tunnel using Drucker-Prager criteria is performed applying acceleration components of
1992 Erzincan, Turkey earthquake's ground motion. In
the time history analyses, Rayleigh damping coefficients are calculated
using main natural frequency obtained from modal analysis. Element matrices
are computed using the Gauss numerical integration technique. The Newmark
method is used in the solution of the equation of motion. Because
too much memory for the analyses is required, the first 7.5 s of the ground
motions, which is the most effective duration, is taken into account
in calculations. The displacement and stress results are observed to be
the allowable level of the concrete material. |
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