ESTUDO COMPARATIVO DE CAPACIDADE DE CARGA E PROBABILIDADE DE RUÍNA DE FUNDAÇÕES PROFUNDAS PARA UM EDIFÍCIO EM LAMBARI-MG

Abstract

This search has as main focus the comparative study of weight capacity and the ruin probability of the deep foundations for a building in Lambari-MG. The general objective is to show a practical study, comparing the types of foundations, to identify the best ones to be used and to analyze the reliability relationships and the ruin probability for the project. For this, the geotechnical profile is characterized with the data obtained in the Standard Penetration Test (SPT) and the structural dimension, load capacity, permessible load and the probability of ruin are dimensioned. We will also address the comparative analysis of weight capacity and the ruin probability of the deep foundations, which has the importance of avoiding problems after the execution or even before, in the project, because when it comes the beginning of the building, it is veryt important to avoid, or even that prevent errors in its design. With the survey of information throughout the research and the analysis of the information, it was possible to conclude that it would be feasible to use piles of easy execution, do not produce vibrations due to the presence of neighboring buildings, did not reach great depths and mainly respecting the municipality limits. So, the Augercast piles and Strauss piles were chosen, which have similar construction techniques, but different performances in the soil. With the data obtained from the study and calculations, a greater load capacity was reached for the Augercast piles and a higher reliability index, and consequently a lower ruin probability. Strauss piles, which for the present project should only be carried out if the soil variability is less than 5%, its load capacity will be lower and the reliability index lower, as a result, a greater likelihood of ruin.