Análise do mecanismo de ruptura da estrutura de contenção da Comunidade do Jacó - Natal/RN
After two days of long-lasting and strong rain registered on 13 and 14 June 2014 with accumulated precipitation of 315mm, a soil nailing structure broke at São José do Jacó community. This paper aims to identify the factors involved in the retaining structure’s rupture via a numerical bidimensional...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/40471 |
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| Resumo: | After two days of long-lasting and strong rain registered on 13 and 14 June 2014 with accumulated precipitation of 315mm, a soil nailing structure broke at São José do Jacó community. This paper aims to identify the factors involved in the retaining structure’s rupture via a numerical bidimensional modelling using the finite elements method. To that, the modelling was done by simulating the retaining structure building process and analysing it under the presence of a high water table taking in account a facing with two states of permeability. For each condition, we analysed the pressures on the facing and the levels of deformation and displacements in order to justify the rupture via modelling. The site soil is characteristic of Formação Barreiras and the surroundings have a high potential for mass movements. The data originated from the elastoplastic analysis and limit analysis on the finite elements software OptumG2 version 2019. The comparison of the facing’s displacements, the forces acting on it and on the nails in the case where there is drainage and the case where there is not, as well as the comments made on other papers endorsed the conclusion that the curtain’s rupture shouldn’t have took place if it wasn’t for its inability of dissipating the pore pressures caused by the rainfall that infiltrated the terrain and were blocked by the facing, when the latter should’ve had draining capabilities. |
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