ISC’2 experimental site – prediction & performance of instrumented axially loaded piles

Authors

  • Jaime Santos Univ. Técnica Lisboa
  • António Viana da Fonseca Faculdade Engenharia da Univ. Porto
  • Elisabete Esteves Faculdade Engenharia da Univ. Porto

DOI:

https://doi.org/10.14195/2184-8394_107_5

Abstract

This paper is part of a joint research project to study the behaviour of piles in residual soil. An experimental test site on residual (saprolitic) soil from granite was constructed at the Faculty of Engineering of the University of Porto. A very extensive site characterization has been held, including a large variety of in situ tests in order to develop an International Prediction Event (Class A) of Bored, CFA and Driven Piles. Researchers and designers were invited to deal with this investigation results in order to predict the real response of the pile foundations. Several in-situ testing techniques were used - penetration tests: SPT and CPTU; pressuremeter and dilatometer tests: PMT and DMT; seismic tests: cross-hole (CH) and down-hole (DH). Undisturbed samples were recovered and an extensive laboratory-testing program was carried out, including oedometric consolidation tests, Ck0D triaxial tests using local strain measuring devices and bender extender elements, as well as resonant column tests. This paper focuses on the axial pile load tests and an analysis of the predictions is presented.

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References

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Viana da Fonseca, A., Carvalho, J., Ferreira, C., Tuna, C., Costa, E. & Santos, J. (2004). Geotechnical characterization of a residual soil profile: the ISC’2 experimental site. Geotech. & Geophysical Site Charact. Ed.Viana da Fonseca & P.W.Mayne. Millpress, Rotterdam, vol. 2, 1361-1369.

Viana da Fonseca, A., Carvalho, J., Ferreira, C., Santos, J. A., Almeida, F., Pereira, E., Feliciano, J., Grade, J. & Oliveira, A. (2006). Characterization of a profile of residual soil from granite combining geological, geophysical and mechanical testing technique. Submetido e aceite em Junho de 2005 a "Geotechnical and Geological Engineering", International Journal of Springer Netherlands - ex-Kluwer (ISSN: 0960-3182) - Pub.: Mar 2006.

Published

2006-07-21

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Articles