Study of the influence of the foundation and the reservoir on the dynamic response in a concrete gravity dam profile

Abstract

This work aims to verify the influence of the foundation and the reservoir on the dynamic behavior of concrete gravity dams in terms of the natural frequencies, vibration modes for a free vibration analysis; and in terms of maximum displacements and maximum stresses at singular points of the structure for a seismic excitation. The dam-reservoir-foundation interaction was investigated through modal and transient analysis by the finite element method via ANSYS APDL software. For this study, we used a typical Brazilian dam profile and compatible data from a Brazilian earthquake for the seismic excitation. The results showed the influence of the reservoir and the foundation on the natural frequencies in the coupled system, as well as its repercussions on the response of the dam under seismic excitation.

Influência Do Uso De Aditivo Acelerador Do Tempo De Pega No Desempenho Do Concreto Sob Altas Temperaturas

“…In the works by Chopra et al (1981), Hall and Chopra (1982), Sharan (1987), Ftima and Léger (2006) and many others, analytical and FEM analyses involving the dynamic effects on DRI are presented. In Brazil, many studies on dams, dynamic structurefluid interaction and related studies have been developed, as for example, the works of Pedroso (2003), Silva (2007), Silveira et al (2018), Mendes et al (2021), Silveira et al (2021), among others.…”

Recursos Minerais E a Busca De Uma Economia De Baixo Carbono: Geração Termelétrica a Gás Natural

“…In the works by Chopra et al (1981), Hall and Chopra (1982), Sharan (1987), Ftima and Léger (2006) and many others, analytical and FEM analyses involving the dynamic effects on DRI are presented. In Brazil, many studies on dams, dynamic structurefluid interaction and related studies have been developed, as for example, the works of Pedroso (2003), Silva (2007), Silveira et al (2018), Mendes et al (2021), Silveira et al (2021), among others.…”