Seismic analysis of concrete arch dams by combined discrete crack and non-orthogonal smeared crack technique

There are different techniques to examine the non-linear seismic behavior of concrete arch dams, among which, discrete crack (DC) method is the most popular. A more recent option introduced for this purpose is the non-orthogonal smeared crack (NOSC) approach. In this study, a special finite element...

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Bibliographic Details
Published in:Engineering structures 2004, Vol.26 (1), p.27-37
Main Authors: Lotfi, Vahid, Espandar, Radin
Format: Article
Language:English
Subjects:
Applied sciences
Building structure
Buildings. Public works
Concrete arch dam
Concrete structure
Construction (buildings and works)
Dams and subsidiary installations
Discrete crack
Exact sciences and technology
Hydraulic constructions
Nonlinear dynamic analysis
Smeared crack
Stresses. Safety
Structural analysis. Stresses
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Summary:There are different techniques to examine the non-linear seismic behavior of concrete arch dams, among which, discrete crack (DC) method is the most popular. A more recent option introduced for this purpose is the non-orthogonal smeared crack (NOSC) approach. In this study, a special finite element program is developed based on the combined discrete crack and non-orthogonal smeared crack (DC–NOSC) technique. The basic concepts of the method are explained initially. Later on, the non-linear dynamic behavior of a typical thin arch dam is considered based on this approach, and the results are compared against other simpler methods mentioned above. Overall, DC–NOSC model is found to be a more rigorous, consistent and realistic approach from different aspects in comparison with both DC and NOSC models alone.
ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2003.08.007