Aplicação da análise da fiabilidade e do dimensionamento probabilístico ao reforço de taludes rochosos
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https://doi.org/10.14195/2184-8394_166_1Palavras-chave:
reforço de taludes, métodos probabilísticos, fiabilidade de sistemasResumo
Este artigo explora a aplicação de métodos probabilísticos na análise da fiabilidade e no dimensionamento do reforço de taludes rochosos sujeitos a mecanismos de rotura planar. O estudo incide no caso de um maciço rochoso intersetado por uma família de descontinuidades paralela à face do talude. O volume com potencial de instabilização é idealizado como um modelo de blocos, para o qual se desenvolve uma formulação em sistemas de componentes. Como termo de comparação, analisa-se igualmente um modelo simplificado que considera o mesmo volume como um bloco único. Os resultados evidenciam a influência da inclinação do plano de deslizamento. Verifica-se que o modelo constituído por múltiplos blocos conduz a índices de fiabilidade inferiores. Contudo, a sua utilização para o dimensionamento probabilístico do reforço tem vantagens apenas para inclinações baixas do plano de deslizamento. A análise sugere ainda que o modelo de blocos múltiplos pode ser adequadamente representado por um modelo simplificado de dois blocos.
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Direitos de Autor (c) 2026 Renato Pereira, José Muralha, Luís Lamas
Este trabalho encontra-se publicado com a Licença Internacional Creative Commons Atribuição 4.0.
