Avaliação de métodos de previsão de recalque em solos granulares do Nordeste do Brasil

Abstract

This work evaluates settlement prediction methods through a 50 cm diameter circular plate load test carried out at the Geotechnics and Foundations Experimental Field of the Federal University of Ceará. Laboratory and in situ investigations provided the geotechnical parameters, including physical characterization, direct shear, triaxial tests, and Standard Penetration Tests (SPT). Settlement estimates were obtained using both the classical Elasticity Theory and semi-empirical approaches proposed by Décourt (1992), Schmertmann (1978), Barata (1984), Burland & Burbidge (1985), Meyerhof (1965), and Sandroni (1991). The plate load test, executed in accordance with NBR 6489/19, was adopted as the benchmark for comparison. Results analyzed by the least squares method show that the Schmertmann (1978) and Sandroni (1991) methods achieved the closest agreement with the experimental curve, whereas the approaches of Burland & Burbidge (1985), Barata (1984), and Meyerhof (1965) exhibited greater deviations.