Reavaliação de método semi-empírico de previsão de capacidade de carga de estacas a partir de banco de dados

Abstract

This work presents a reassessment of the method by Aoki and Velloso, used in the prediction of the bearing capacity of piles of different types using the Standard Penetration Test. This was possible by the use of a data bank containing 172 loading tests stored in a microcomputer. The use of a microcomputer made possibile the study of the use of other SPTs for the point resistance besides those initially proposed by the method, trying to consider failure models proposed in the bibliography, as well as correlations between cone and SPT recommended by other authors. It was also analysed loading tests on instrumented, floating and point bearing piles. Scale and installation factors were adjusted. lt has been shown that the method proposed by Aoki and Velloso tends to underestimate the lateral resistance and to overestimate the point resistance of piles.