Análise comparativa entre o recalque de fundações rasas e profundas em edifício assentado sobre solo mole

Abstract

The design of foundations projects must be carried out in such a way as to ensure that these elements safely support the superstructure requests and do not present excessive displacements that may cause structural damage to the work. For the preparation of these projects, there are several types of foundations that, depending on the case, some are more indicated than others, and in order to identify which foundation to use it is necessary to analyze several fundamental aspects. One of the main factors that must be analyzed is the occurrence of soft ground at the site, since, if this type of soil requires the use of specific foundations for this terrain, in order to avoid excessive values of repression of structures, a major problem caused by soft soils. In this sense, the present work presents the comparison of the repression for two types of foundations that can be alternatives applicable to the case under study, shoes supported on mortar piles and deep precast piles. The work presents a scenario whose soil profile showed low load capacity in the equivalent depth between 0 and 2 meters of the surface and, also, between 7 and 15 meters of the surface of the terrain, in general, being characterized as a mole soil. The study pointed out that the shoes supported on cuttings, for the analyzed terrain profile, presented values of repression, in most cases, inferior to the values of the settlements obtained by the deep foundations. In addition, it was also possible to observe that both values of the recalculations calculated were within the safety standards, due to the economic issue, the work concluded that shoe-type foundations supported on piles was the most viable solution for the case in question.