Metodologia de execução e determinação da capacidade de carga de estacas de pequeno diâmetro cravadas e injetadas

• Autor(a) principal: Benati, Juliano Bertelli
• Data de Publicação: 2007
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3702
• topic: Fundações; Estacas; Prova de carga; Foundations; Piles; Load capacity test; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::GEOTECNICA

The present work seeks to establish a carry out methodology for small diameter pile composed by seamless metallic tubes driven with a similar to SPT tripod equipment and with subsequent injection of cement paste at low pressures, being these piles a peculiar option in the state of Minas Gerais - Brazil. The composition of the constituent materials of the piles and their properties as: the fluidity, the compression resistance, the migration of water in cement paste dosages suggested in the literature and mechanical traction test of the tubes are presented as a form to understand the structural characteristics of this element. To verify the in situ performance of this type of deep foundation, three load capacity tests were executed in piles with different lengths and water/cement ratio, that were performed in a typical soil of a region denominated "Zona da Mata". The load capacity tests data were analyzed by NBR 6122/96 method and the conventional failure (10% of the diameter). The comparison of the obtained results with traditional pile load capacity prediction methods based on SPT allowed a re-evaluation of available correlations in order to characterize the load capacity of these piles supplying important performance information to the Geotechnical community.