Segmented flight auger piles: execution, integrity verification and behavior study. / Estacas hélice segmentada: execução, verificação de integridade e estudo do comportamento.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This work presents the history and development of segmented flight auger equipment, which appeared in 2002 in Brasil. Nowadays there is already a considerable number of equipments being operated in the market, confirming the well acceptance of the process in the technical field. The executive aspects on this type of foundation are detailed and it is investigated the risk of its execution in the operational aspect regarding the pile integrity, in case patterns or adequate rules are not observed by the pile companies. Pile integrity tests have been carried out in 10 segmented flight augers installed in São Bernardo do Campo SP, with executive particularities in diversified fields with distinguished characteristics, which allowed to check the reliability of monitoring graphs from the drilling machine. In addition, it is shown the result of an instrumented loading test, carried out on a segmented flight auger of 30 cm diameter and 12 m length, installed at the Experimental Field of Foundation and Soil Mechanics at UNICAMP. The pile was submitted to slow and quick static loading compression tests. A comparison is made with the results of load tests on continuous flight auguer, of the same length, done before on this site. Finally, some recommendations are presented based on the research and on the follow-up of constructions, allowing to evaluate patterns of good and bad execution.

ASSUNTO(S)

foundations (engineering) geothecnic fundações (engenharia) continuous flight auger and omega piles piles estacas estacas hélice contínua e ômega geotecnia

ACESSO AO ARTIGO

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