Seismic Assessment of Weighted Concrete Dams using Equivalent Nonlinear Static Analysis

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Abstract

Various equivalent nonlinear static analysis procedures have recently been introduced for seismic assessment of tall buildings. Here, iterative linear equivalent method is proposed for seismic analysis of concrete dams. Regarding important differences between the behavior of concrete dams and high-rise buildings, basic concepts and main steps of this analysis technique are developed to make it applicable for this kind of structures. In comparison with well-known push-over analysis, independency of the results from the lateral load pattern is one of the main advantages of this method. Other important achievements contain: estimating structure's damping and considering the interaction between water, structure and foundation. The proposed method is implemented and verified for Pine Flat dam which shows acceptable results.

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