Estudo de viabilidade técnica e econômica de fundação em estacas para um projeto robusto ao colapso progressivo.

Abstract

With the advance of the computational simulation capacity and the development of alternatives to solve structural problems, it became possible the modeling of structures with behavior analogous to a real structure. Based on this premise, this paper aims to expose the feasibility study of the modeling of a building with stakes foundation, assuming that: in case any of the stakes rupture, adopting a robust design of the structure, designed with the objective of compensating the local failure, the building will not have its stability compromised. For this, it was used a program based on the Finite Element Method - FEM, being possible to observe, in case of an accident, the behavior of the efforts, moments and displacements of the conventional structure, interpreting the results of its contribution to the progressive collapse and thus dimensioning the robust structure capable of preventing this phenomenon. The estimated value of safety, considering only the execution costs of the conventional structure, compared to the robust structure, is 5.79%, but when the values covering all the steps for the construction of the conventional building and the robust building are verified, this percentage represents only 1.62% of increase to the initial costs. Thus, through the presented study, the execution of a building with stake foundation, for a project robust to progressive collapse, demonstrates to be feasible. However, further studies should be carried out in order to increase the quantity and quality of the results found.