Solos moles
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Citações na Scopus
Tipo de produção
Trabalho de Conclusão de Curso
Data
2022-12-08
Autores
Gallera, Caroline Freitas
Modesto, Nicholas Casconi Melari
Araujo, Willian Meneses de
Modesto, Nicholas Casconi Melari
Araujo, Willian Meneses de
Orientador
Amann, Kurt André Pereira
Periódico
Título da Revista
ISSN da Revista
Título de Volume
Citação
Texto completo (DOI)
Palavras-chave
recalques,solos moles,adensamento,aterro de pré-carga,modelagem numérica,settlements,soft soils,compaction,preloading embankment,numerical modeling
Resumo
Solos moles são frequentemente encontrados nas regiões litorâneas brasileiras e, quando não compreendido seu comportamento com base em estudos e ensaios de caracterização, podem ser um problema à obra, principalmente em obras de infraestrutura, e um problema muito comum que ocorre devido a esse tipo de solo é o recalque. Costumeiramente, a solução de substituição total ou parcial dos solos moles fora praticada ao longo do tempo, contudo, novas metodologias foram surgindo e a
engenharia foi se atualizando, exemplos dessas novas soluções são os aterros leves,
aterros de sobrecarga temporária, aterros sobre geodrenos, entre outros, com especial atenção a solução de aterros de pré-carga que fora objeto de análise no estudo de caso. Visou-se analisar as diferentes metodologias em comparação com as soluções empregadas em obra, seus dados de solo e resultados analíticos, apresentando uma revisão bibliográfica baseados em artigos e um estudo de caso com dados reais de obra. Dos resultados colhidos e analisados dos documentos de obra, viu-se que o recalque de 10,2mm não será problema na fase de obras, mas na fase operacional, eles podem prejudicar de maneira significativa a operação do empreendimento, no caso de uma obra de infraestrutura. Considerando que a fase operacional pode ser prejudicada, por vezes opta – se por acelerar os recalques que acontecem posteriormente à construção do empreendimento (os chamados recalques secundários) com o tipo de aterro que seja mais adequado para acelerar o recalque secundário. Com a intenção de acelerar todos os recalques presentes na obra, este estudo sugeriu um aterro de pré-carga a ser alocado no ponto de interesse (na região onde há presença de solo mole). Por vezes, para prever melhor os recalques que surgirão, é comum o uso de softwares que a partir da modelagem do terreno possibilita essa análise. A modelagem realizada por este estudo estimou que a obra sofreria 10,2mm de recalque imediato sendo 232,7mm o recalque total. Em contrapartida, o recalque imediato causado pelo aterro de pré-carga resultou
em 351mm de recalque total, sendo 11,8mm recalque imediato.
Soft soils are often found in the Brazilian coastal regions and, when their behavior is not understood based on studies and characterization tests, they can be a problem for the work, mainly in infrastructure works, and a very common problem that occurs due to this type of soil. soil is repression. Usually, the solution of total or partial replacement of soft soils has been practiced over time, however, new methodologies have emerged and engineering has been updated, examples of these new solutions are light landfills, temporary overload landfills, landfills on geodrains, among others, with special attention to the solution of preload landfills that had been analyzed in the case study. The aim was to analyze the different methodologies in comparison with the solutions used in the work, their soil data and analytical results, presenting a bibliographic review based on articles and a case study with real work data. From the results collected and analyzed from the work documents, it was seen that the settlement of 10.2mm will not be a problem in the works phase, but in the operational phase, they can significantly harm the operation of the enterprise, in the case of a work of infrastructure. Considering that the operational phase can be harmed, sometimes it is decided to accelerate the settlements that occur after the construction of the project (the so-called secondary settlements) with the type of landfill that is most suitable to accelerate the secondary settlement. With the intention of accelerating all settlements present in the work, this study suggested a preload embankment to be allocated at the point of interest (in the region where there is presence of soft soil). Sometimes, to better predict the settlements that will arise, it is common to use software that, based on terrain modeling, makes this analysis possible. The modeling carried out in this study estimated that the work would suffer 10.2mm of immediate settlement, with 232.7mm of total settlement. In contrast, the immediate settlement caused by the preload embankment resulted in 351mm of total settlement, with 11.8mm being immediate settlement.
Soft soils are often found in the Brazilian coastal regions and, when their behavior is not understood based on studies and characterization tests, they can be a problem for the work, mainly in infrastructure works, and a very common problem that occurs due to this type of soil. soil is repression. Usually, the solution of total or partial replacement of soft soils has been practiced over time, however, new methodologies have emerged and engineering has been updated, examples of these new solutions are light landfills, temporary overload landfills, landfills on geodrains, among others, with special attention to the solution of preload landfills that had been analyzed in the case study. The aim was to analyze the different methodologies in comparison with the solutions used in the work, their soil data and analytical results, presenting a bibliographic review based on articles and a case study with real work data. From the results collected and analyzed from the work documents, it was seen that the settlement of 10.2mm will not be a problem in the works phase, but in the operational phase, they can significantly harm the operation of the enterprise, in the case of a work of infrastructure. Considering that the operational phase can be harmed, sometimes it is decided to accelerate the settlements that occur after the construction of the project (the so-called secondary settlements) with the type of landfill that is most suitable to accelerate the secondary settlement. With the intention of accelerating all settlements present in the work, this study suggested a preload embankment to be allocated at the point of interest (in the region where there is presence of soft soil). Sometimes, to better predict the settlements that will arise, it is common to use software that, based on terrain modeling, makes this analysis possible. The modeling carried out in this study estimated that the work would suffer 10.2mm of immediate settlement, with 232.7mm of total settlement. In contrast, the immediate settlement caused by the preload embankment resulted in 351mm of total settlement, with 11.8mm being immediate settlement.