UPLIFT BEHAVIOR OF CONTINUOUS FLIGHT AUGER PILES IN SANDY-CLAY SOIL

Authors

  • João Victor Costa Araújo Centro Universitário Christus - Unichristus
  • Fernando F. Monteiro
  • Alfran S. Moura
  • Caio C. Scipião

Abstract

The bearing capacity estimation continuous flight auger (CFA) piles subjected to tension can be carried out through various field-testing methodologies, providing specific values for the pile-soil system. However, it is common among foundation engineers to adopt semi-empirical methods or consider that the ultimate tension load is equivalent to a portion of the shaft resistance to compression. Given this practice and the scarcity of available data in Fortaleza, Ceará, this article aims to analyze semi-empirical methodologies to estimate the tensile load capacity of continuous flight auger piles in characteristic stratigraphic profiles of the municipality. The study was conducted through static load tests on two continuous flight auger piles, with a diameter of 0.4 m and a length of 13.6 m, embedded in sandy soils in the city of Fortaleza/CE, Brazil. Based on the experimental results and load capacity estimates, it is observed that methodologies developed for piles subjected to compression, based on the Standard Penetration Test (SPT), prove to be suitable tools for estimating the load capacity of continuous flight auger piles.

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Published

2024-05-27

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Artigos