RESUMO: O presente trabalho objetiva prever o comportamento da fundação do protótipo eólico EOL-10 por meio de modelagem numérica. Em atual funcionamento, o aerogerador está localizado na Gerência de Serviços e Suporte Tecnológico (GST.E) de Furnas em Aparecida de Goiânia (GO). O modelo numérico foi implementado no software Abaqus pelo Método dos Elementos Finitos, onde foram avaliados os deslocamentos do sistema, o comportamento estrutural da fundação e a interação solo-estrutura. O sistema eólico foi analisado para um carregamento de vento extremo cujas características foram medidas diretamente e fornecidas pelo fabricante. As geometrias das partes do modelo numérico foram idênticas às do protótipo eólico e o perfil de solo correspondeu às características do terreno estudado por ensaios de laboratório. O comportamento da fundação do EOL-10 foi determinado pelo cálculo dos diagramas de rotação, momento fletor e esforço cortante atuantes na estaca além das forças e dos módulos de reação do solo obtidos pela Teoria de Winkler. Finalmente, as previsões foram consideradas satisfatórias por evidenciarem características próprias de um radier estaqueado submetido a carregamento horizontal monotônico.
The present paper aims to investigate the effects of defective piles in horizontally loaded piled raft foundations. Close to real scale foundation models of defective and intact three-piled systems were submitted to horizontal load tests. The models used bored type piles drilled with 5 m in length and 0.25 m in diameter, connected to a concrete raft founded on a tropical soil pro le at the University of Campinas research site. Based on the experimental data, a tridimensional nite element analysis was initially calibrated and consequently used to study the effects of the defective element at the pile load distribution and the horizontal subgrade forces at the pile shaft. The results show that the presence of a defective pile increases the raft tilting, which affects both vertical and horizontal load distributions among the raft and the piles, and among trailing and leading piles.
The present paper aims to investigate the effects of defective piles in horizontally loaded piled raft foundations. Close to real scale foundation models of defective and intact three-piled systems were submitted to horizontal load tests. The models used bored type piles drilled with 5 m in length and 0.25 m in diameter, connected to a concrete raft founded on a tropical soil profile at the University of Campinas research site. Based on the experimental data, a tridimensional finite element analysis was initially calibrated and consequently used to study the effects of the defective element at the pile load distribution and the horizontal subgrade forces at the pile shaft. The results show that the presence of a defective pile increases the raft tilting, which affects both vertical and horizontal load distributions among the raft and the piles, and among trailing and leading piles.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.