Previsão da capacidade de carga de estacas: estudo de caso comparativo.

• Autor(a) principal: Oliveira, Pedro Augusto Silva
• Data de Publicação: 2021
• Outros Autores: Perez, Pedro Mussa Medeiros
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/216594
• topic: Geotechnical dimensioning; Piles; Load capacity; Admissible loading; Semiempirical methods; Dynamic load test; Static load test; Dimensionamento geotécnico; Estacas; Capacidade de carga; Carga admissível; Métodos semiempíricos; Prova de carga dinâmica; Prova de carga estática; Fundações (Engenharia); Engenharia geotécnica; Engenharia dos solos

The assertive dimensioning of the load capacity and, consequently, the admissible load of piles is essential for the safe execution of deep foundations of large buildings in different geotechnical profiles. In order to provide more studied analysis for each scenario of foundation, loading and soil, there are several methods for calculating the load capacity of piles. This work presents an analysis of the Aoki-Velloso, Décourt-Quaresma, Teixeira and Alonso methods, in addition to the CAPWAP method for the dynamic load test and the extrapolations of the load-uptake curve obtained from the static load test. The objective of the study is the comparative analysis of different methods of predicting load capacity applied to three real piles of different typology executed in three different geotechnical profiles: a continuous-helix pile, a precast tubular concrete pile and a metallic pile. The work is based on the existing bibliography for the models of the foundations studied, the methods and tests adopted. The analyzes carried out used as input data the SPT drill test bulletins of the piles and the reports of dynamic load tests and static load test. It was assumed that the different methods present different results even when determined on the same foundation, thus making it necessary to apply more than one method for the assertive dimensioning of the pile load capacity for each case. Therefore, in the comparative analysis of this report, it was found that the continuous helix pile (considering total cutting edge contribution) presented the results of less conservative semi-empirical methods, some even against safety, and for precast concrete piles and conservative results were presented, with the latter being the most conservative in this case study. Thus, in the comparative analysis of this report, it was found that the semiempirical method of Décourt-Quaresma presented the results closest to those collected by the load test tests