Orthotropic Material and Anisotropic Damage Mechanics Approach for Numerically Seismic Assessment of Arch Dam-Reservoir-Foundation System
In contrast with modeling of the contraction joints, the performance and influence of lift joints are usually neglected in numerical analysis of concrete arch dams. In this paper, the seismic nonlinear response of a concrete arch dam– reservoir–foundation system is investigated with considerin...
Gespeichert in:
| Datum: | 2013 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут проблем міцності ім. Г.С. Писаренко НАН України
2013
|
| Schriftenreihe: | Проблемы прочности |
| Schlagworte: | |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/112677 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Orthotropic Material and Anisotropic Damage Mechanics Approach for Numerically Seismic Assessment of Arch Dam-Reservoir-Foundation System / M.A. Hariri-Ardebili, H. Mirzabozorg // Проблемы прочности. — 2013. — № 6. — С. 22-44. — Бібліогр.: 41 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | In contrast with modeling of the contraction
joints, the performance and influence of lift
joints are usually neglected in numerical analysis
of concrete arch dams. In this paper, the seismic
nonlinear response of a concrete arch dam–
reservoir–foundation system is investigated with
considering the effects of lift joints using
orthotropic-based material. An anisotropic damage
mechanics approach is introduced and modified
to take into account the effects of weak
horizontal planes between concrete lifts during
the construction phase. This model is capable to
consider the pre-softening behavior, the softening
initiation criterion and anisotropic cracking
behavior in mass concrete. The coupled equation
of motion in dam–reservoir system is
solved by staggered displacement method while
the foundation rock is assumed as a mass-less
and rigid mediums. The coupled system is excited
using three-component ground motion in
the maximum credible level. It is found that using
orthotropic-based material increases crest
displacements and also leads to more damage in
the dam body in comparison with the case using
the common isotropic-based material. |
|---|