Avaliação do comportamento solo-estrutura de elementos de fundação tipo sapata estaqueada

• Autor(a) principal: Duarte, Leandro Neves
• Data de Publicação: 2012
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/828
• topic: Fundações; Sapatas; Simulação numérica; Foundations; Footing; Numerical simulation; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::GEOTECNICA

This work aims to study the behavior and interaction between soil, shallow footing and pile, based on the implementation and monitoring of four direct load tests performed on: a single shallow footing, a shallow footing with one pile, a shallow footing with four piles and a pile alone. During the load tests, vertical displacements were monitored at different depths, corresponding to different stress bulbs, using a special instrumentation which was called "BETAS devices. To determine the mechanical characteristics of gneiss residual soil, standard penetration tests (SPT), flat dilatometer tests (DMT) and Ménard pressuremeter tests (PMT) were performed in the field. In laboratory, tests were carried out to characterize and to determine the strength and deformability characteristics of the soil, using disturbed and undisturbed samples. Loading capacities and allowable settlements obtained in the field were compared with the ones provided by theoretical and empirical methodologies based on field and laboratory tests, to evaluate the validity of these methodologies. Furthermore, using the finite element method through the commercial software Abaqus, comparisons were made between the load-settlement curves obtained numerically and by the load-tests and, finally, a parametric study was realized to investigate the influence of the number of piles in the behavior of the shallow footing.