Proposta de uma ferramenta computacional para a previsão da capacidade de carga e recalque em estacas pré-moldadas cilíndricas de concreto

Abstract

In general, the buildings are subject to actions of permanent, accidental and exceptional loads (vertical, horizontal and thermal effects) that are responsible for producing internal efforts that induce reactions in the supports. These efforts must be transmitted to the soil through of foundation elements, that it could be superficial or deep. For the case in which soil does not present conditions of resistance in the superficial layers, it is necessary that the foundations reach deeper and more resistant layers, being able to be used deep foundations of the type pillars or piles. In the designing of deep foundations, it is necessary to know the resistant capacity of the element and the level of application that the soils resist without rupture or excessive strain. The correct determination of the load capacity of a foundation and the pressure are the basis for the development of a safe and economically viable project. There are currently several computer programs that do these calculations. However, most of them programs are paid and their do not plot the load x displacement curve, or that use foreign methods. The development of this research was justified for the possibility that the researchers of the area will have to evaluate the behaviour of the foundation element of the deep type through of pile, by using a computational routine of easy manipulation developed in the MATLAB language. AokiVelloso (1975) and Aoki (1979) method, respectively, using the soil profile obtained by simple recognition test and the pile geometric characteristics (diameter, length and material). The program is specific to cylindrical concrete precast piles in which it is possible to plot the load x displacement curve and compare the load-carrying capacity (Aoki-Velloso method (1975)) with load test values.