Loading...

Nonlinear seismic response of concrete gravity dams using damage mechanics including dam-reservoir interaction

Mirzabozorg, H ; Sharif University of Technology | 2004

148 Viewed
  1. Type of Document: Article
  2. DOI: 10.1201/9780203020678.ch75
  3. Publisher: shers , 2004
  4. Abstract:
  5. A local anisotropic damage mechanics model based on energy equivalence was used for evaluating the nonlinear static and dynamic response of concrete gravity dams. The cracks within the elements was formulated as coaxial rotating cracks and the effect of hydrodynamic pressure was included using the staggered displacement method. The features of strain rate effects; strain softening and closing/reopening of cracks were included in the model. The mesh objectivity of the nonlinear model was satisfied by the fracture energy conservation technique. The Pine Flat dam was chosen to investigate the performance of the proposed algorithms. It was found that the resulted crack profiles when including dam-reservoir interaction is less diffused in comparison when the reservoir is modeled as added mass and also there is not any numerical instability during dynamic analysis. © 2004 Taylor & Francis Group, London
  6. Keywords:
  7. Concrete gravity dams ; Staggered method ; Seismic energy response ; Nonlinear analysis ; Dam–Reservoir interaction
  8. Source: Proceedings of the 4th International Conference on Dam Engineering - New Developments in Dam Engineering, Nanjing, 18 October 2004 through 20 October 2004 ; 2004 , Pages 635-642 ; 0415362407 (ISBN); 9780415362405 (ISBN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0141029697002083