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Seismic fragility assessment of concrete gravity dams using nonlinear dynamic analysis with mass foundation

Ghaemian, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. Maintaining of concrete gravity dams in good conditions as one of the important infrastructures is significant concern for dam owners. These dams should able to continue their function after a disaster such as earthquake. But most of them are aged dams with some located near faults. Indeed, there are some concerns regarding the performance of these dams under the effect of seismic loads. In recent years some criteria about linear performance of these dams have been developed. But the same cannot be said about nonlinear behavior of these dams, which seem to lack well-developed criteria. In this paper we shall try to illustrate seismic fragility curves for concrete gravity dams by using nonlinear dynamic analysis and a continuum crack propagation model, smeared crack model. For this purpose largest monolith of Pine Flat dam has been used. The fragility curves show the dam is very vulnerable when an earthquake strikes it with the peak ground motion more than 0.19g
  5. Keywords:
  6. Concrete gravity dams ; Crack propagation model ; Fragility curves ; Ground motions ; Near fault ; Nonlinear behavior ; Seismic fragility ; Seismic load ; Smeared crack model ; Civil engineering ; Concrete dams ; Engineering geology ; Gravitation ; Gravity dams ; Tsunamis ; Earthquakes
  7. Source: 9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium, 25 July 2010 through 29 July 2010, Toronto, ON ; Volume 1 , 2010 , Pages 185-194 ; 9781617388446 (ISBN)