4/1/2024 0 Comments Seismosignal last line limitHowever, computation of earthquake effects in design of special structures, such as concrete dams, aqueducts and nuclear power plants, has being done for decades, although in a simplified form. Associação Brasileira de Normas Técnicas - ABNT, 2006.). Projeto de Estruturas Resistentes a Sismos - Procedimento. The first design code dedicated exclusively to this type of analysis was approved in 2006 ( NBR15421, 2006 NBR15421 (2006). The last few years in Brazil have indicated a growing interest in national engineering for earthquake-resistant design. On the other hand, the proposed development is straightforward and in agreement with finite element results for general cases where dam flexibility plays an important role.Ĭoncrete gravity dams dynamic pseudo-dynamic seismic design It is verified that application of the traditional procedure should be done carefully and limited to extremely rigid dams. The authors propose a self-contained development and detailed examples of this latter method, including a comparison with finite element models using transient response of fluid-structure systems. A practical alternative arises with the Pseudo-Dynamic method, which considers a simplified spectrum response in the fundamental mode. Traditional procedures applied in design bureaus, such as the Pseudo-Static method, often neglect structural dynamic properties, as well as ground amplification effects. This paper presents a review of current techniques employed for dynamic analysis of concrete gravity dams under seismic action.
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