Dynamic load tests on small diameter auger piles with modified tip / Provas de carga dinâmica em estacas escavadas de pequeno diâmetro com ponta modificada

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Auger pile foundations have been widely employed for light to medium loads. As the executive process can’t avoid the degradation of the bottom excavation in situ soil properties, the only reliable resistance is a lateral friction parcel. However, these tip piles, many times, reaches relatively resistant strata and can’t take advantage from these strata qualities. The present paper seems study the performance of this kind of piles in typical geotechnical profile of Londrina, by dynamic load tests on 16 piles with diameter equal 0,25 m and length of 12 m, when three traditional piles and on thirteen kinds with tip modification. Were made, also, static load tests on three traditional piles, tip investigation on all piles and soil resistance parameters determination. The results shaw that all modifications researched was able to use the nominal structural load of piles and that the more efficient of them was the soil improvement by soil stabilizer addition.

ASSUNTO(S)

fundações ponta modificada foundations modified tip colapsibilidade colapsibility

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