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Structural Engineering and Mechanics Volume 21, Number 4, November10 2005 , pages 423-435 DOI: https://doi.org/10.12989/sem.2005.21.4.423 |
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Frequency domain analysis of concrete arch dams by decoupled modal approach |
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Vahid Lotfi
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| Abstract | ||
| A modal approach is proposed for dynamic analysis of concrete arch dam-reservoir systems in frequency domain. The technique relies on mode shapes extracted by considering the symmetric parts of total mass and stiffness matrices. Based on this method, a previously developed program is modified, and the response of Morrow Point arch dam is studied for various conditions. The method is proved to be very effective and it is an extremely convenient modal technique for dynamic analysis of concrete arch dams. | ||
| Key Words | ||
| decoupled modal approach; concrete arch dams; dynamic analysis. | ||
| Address | ||
| Civil Engineering Department, Amirkabir University, Tehran, Iran | ||