The compression shaft capacity of isolated piles embedded in sand is generally computed using semi-empirical correlations obtained by back-analysis of full-scale loading tests; due to the lack of full scale tension loading tests, the tension shaft capacity is commonly evaluated by reducing of about 10 to 25% the compression one. With the aim to obtain a deeper insight into this matter, a large amount of physical model tests on isolated, closed-ended, ideally non-displacement model piles, embedded in medium and high density specimens of fine silica sand, axially loaded in compression and in tension, using the ISMGEO geotechnical centrifuge, have been analysed. A large effort was paid to evaluate the effects of the grain size, the accelera-tion field and the arching, on the peak shear stress resistance mobilised at the pile – soil interface.

On the shaft capacity of non displacement piles in sand from centrifuge tests

FIORAVANTE, Vincenzo;GUERRA, Lara;
2010

Abstract

The compression shaft capacity of isolated piles embedded in sand is generally computed using semi-empirical correlations obtained by back-analysis of full-scale loading tests; due to the lack of full scale tension loading tests, the tension shaft capacity is commonly evaluated by reducing of about 10 to 25% the compression one. With the aim to obtain a deeper insight into this matter, a large amount of physical model tests on isolated, closed-ended, ideally non-displacement model piles, embedded in medium and high density specimens of fine silica sand, axially loaded in compression and in tension, using the ISMGEO geotechnical centrifuge, have been analysed. A large effort was paid to evaluate the effects of the grain size, the accelera-tion field and the arching, on the peak shear stress resistance mobilised at the pile – soil interface.
2010
CENTRIGUGE; PILE; TENSION SHAFT CAPACITY
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1389215
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