Análise numérica de blocos sobre estacas considerando a influência do solo

Abstract

The foundation elements have the function of transferring the actions of the superstructure to the ground. To choose the ideal type of foundation, one must consider the type of soil, the topography of the region, economic conditions, the incidental actions and the foundations available in the locality. Crown blocks or blocks on piles have the function of transmitting the actions of the column to the piles. As it is an element that does not allow visual inspection, it is very important to know its behavior in service in depth, in order to be able to dimension it more efficiently and obtain the best performance from the element. This work aimed to carry out a case study of blocks on piles with associated columns, comparing them with models with equivalent column, through computational modeling, considering that the materials will have elastic and linear behavior. It was expected to analyze the reactions in the piles, the vertical displacements in the column, in the lower face of the block and in the tip of the central piles and the tensions of compression and tension. For this, 36 models of blocks on 12 piles were studied, varying some parameters, being them, the type of column, the height, the presence or not of soil and the characteristic compressive strength of the concrete. The main conclusions were that the blocks with the highest heights had the lowest values of displacement and compressive and tensile stresses and the blocks with the equivalent column had higher values of displacements and stresses compared to blocks with associated columns.