Análise de métodos semi-empíricos para o cálculo da capacidade de carga de estacas raiz de pequeno e grande diâmetro em obras de Fortaleza

Abstract

This paper deals with the analysis between semi-empirical bearing capacity methods in root piles and the statics load tests results, at imobiliary market building at Fortaleza. This paper presents comparison between Lizzi (1982), Salioni (1985), Cabral (1986), Brasfond (1991), Aoki and Velloso (1975) and Décourt and Quaresma (1978) results and three static load tests results which failure values were obtained from Van der Veen (1953) method. For root piles with small diameter, the Salioni (1985), Cabral (1986) and Décourt and Quaresma (1978) methods presents the best results. Subsequently, estimates of bearing capacity using the Aoki and Velloso (1975), Décourt and Quaresma (1978) and Cabral (1986) methods, performed by Amancio et al. (2010) for larger than 250mm diameter piles, were compared with estimates made using the Salioni (1985) method. For root piles with small diameter, the Salioni (1985), Cabral (1986) and Décourt and Quaresma (1978) methods presented more consistent results. However, for large diameter piles, the Salioni (1985) method didn´t show satisfactory results and the Cabral (1986) method showed the best results.