Proceeding of the 2018 DFI-EFFC International Conference on Deep Foundations and Ground Improvement, Rome, Italy, (DFI, EFFC)
Study on the Bearing Capacity of Bored Piles with Improvement Techniques
Ana B. A. N. Dias, Leonardo B. D. Brandão and Juliane A. F. Marques
The upper part of the city of Maceió began to develop rapidly in recent years. Because of its characteristics, the use of bored piles became very popular in the area, demanding new techniques that could increase the load bearing capacity of the piles. To meet these demands, a local geotechnical company developed two solutions: the execution of rings along the shaft and the consolidation of the pile toe, being the combination of them the subject of this paper. To determine the contribution of the toe consolidation two semi-empirical methods were used: the Aoki-Velloso and the Décourt-Quaresma methods; and two methods based on the extrapolation of the curve “load vs. settlement”: the Van der Veen and the Décourt methods. As a result, the Décourt-Quaresma method was the one that showed the most representative values of the contribution of the pile toe consolidation, when executed simultaneously with rings along the shaft.
|article #2967; publication #1040 (ROME-2018)|