Análise de desempenho de fundações rasas em sapatas isoladas por meio de correlações com ensaio SPT
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Data
2022
Tipo de documento
Artigo Científico
Título da Revista
ISSN da Revista
Título de Volume
Área do conhecimento
Engenharias
Modalidade de acesso
Acesso aberto
Editora
Autores
Ferreira, Samuell Ruan Silva
Barreto, Breno Brandão
Orientador
Souza Filho, Humberto Laranjeira de
Coorientador
Resumo
Os cálculos de recalques elásticos ou imediatos são muito importantes, principalmente para solos arenosos ou argilosos não saturados, e para essa determinação pode ser usada a teoria da elasticidade, que necessita da obtenção dos parâmetros de deformabilidade. Esses parâmetros são o coeficiente de Poisson e o módulo de elasticidade, entretanto, ao correlacionar esses parâmetros com o SPT, percebe-se variância nos valores do coeficiente de Poisson para alguns tipos de solo, cabe então observar o quanto essa discrepância implica nos resultados finais de recalques elásticos e o quão esses recalques acarretam em problemas com as distorções angulares para um determinado solo da cidade de Guanambi, situada no sudoeste do estado da Bahia. Trata-se de analisar pesquisas empíricas retiradas das literaturas sobre o tema, da implantação de uma edificação fictícia elaborada pelos autores e de um ensaio SPT para fazer as correlações necessárias. Com as devidas análises e cálculos executados, encontrou-se uma diferença máxima de 2,03 milímetros nos recalques elásticos, com isso, como já esperado, percebeu-se que a variação do coeficiente de Poisson não traz grandes divergências nos valores de recalques elásticos, além de que apesar da variação ser pequena, identificou que quanto maior for o coeficiente de Poisson, menor será o recalque do solo. Contudo, ressalta-se também que mesmo o recalque “total” sendo pequeno, a obra poderá ter consequências negativas por causa da distorção angular entre as sapatas, algo que aconteceu para essas circunstâncias estipuladas no presente trabalho.
The calculations of elastic or immediate settlements are very important, mainly for unsaturated sandy or clay soils, and for this determination the elasticity theory can be used, which requires obtaining the deformability parameters. These parameters are the Poisson's ratio and the modulus of elasticity, however, when correlating these parameters with the SPT, one perceives variance in the values of the Poisson's ratio for some types of soil, it is worth noting how much this discrepancy implies in the final results. of elastic settlements and how these settlements cause problems with the angular distortions for a given soil in the city of Guanambi, located in the southwest of the state of Bahia. It is about analyzing empirical research taken from the literature on the subject, the implantation of a fictitious building elaborated by the authors and an SPT essay to make the necessary correlations. With the due analysis and calculations performed, a maximum difference of 2.03 mm was found in the elastic settlements, with that, as expected, it was noticed that the variation of the Poisson's ratio does not bring great divergences in the values of elastic settlements, besides that although the variation is small, he identified that the higher the Poisson's ratio, the lower the settlement of the soil. However, it is also emphasized that even if the “total” repression is small, the work may have negative consequences because of the angular distortion between the shoes, something that happened for these circumstances stipulated in the present work.
The calculations of elastic or immediate settlements are very important, mainly for unsaturated sandy or clay soils, and for this determination the elasticity theory can be used, which requires obtaining the deformability parameters. These parameters are the Poisson's ratio and the modulus of elasticity, however, when correlating these parameters with the SPT, one perceives variance in the values of the Poisson's ratio for some types of soil, it is worth noting how much this discrepancy implies in the final results. of elastic settlements and how these settlements cause problems with the angular distortions for a given soil in the city of Guanambi, located in the southwest of the state of Bahia. It is about analyzing empirical research taken from the literature on the subject, the implantation of a fictitious building elaborated by the authors and an SPT essay to make the necessary correlations. With the due analysis and calculations performed, a maximum difference of 2.03 mm was found in the elastic settlements, with that, as expected, it was noticed that the variation of the Poisson's ratio does not bring great divergences in the values of elastic settlements, besides that although the variation is small, he identified that the higher the Poisson's ratio, the lower the settlement of the soil. However, it is also emphasized that even if the “total” repression is small, the work may have negative consequences because of the angular distortion between the shoes, something that happened for these circumstances stipulated in the present work.
Palavras-chave
Correlações empíricas com SPT, Distorção angular entre sapatas, Parâmetros de deformabilidade do solo, Recalque elástico