ANÁLISE DE VIABILIDADE TÉCNICO/ECONÔMICA ENTRE FUNDAÇÕES PROFUNDAS: estudo de caso entre estaca pré-moldada em concreto armado e tipo hélice contínua em um galpão industrial

Abstract

This work deals with a comparative study that aims to analyze the viability technical/cost between two types of indirect foundations or deep: the stakes of the type continuous helix and the stakes nailed of type pre-molded in reinforced concrete. For its realization, it was used project of an industrial shed already exists where its foundation, sized and executed using stakes of the type continuous helix, was confronted with the system of stakes pre-molded in reinforced concrete, which also meets the conditions established geotechnical. Using the methods of Aoki-Velloso (1975), Décourt-Quaresma (1978) and Teixeira (1996), among other literatures and normative references in accordance with the ABNT, was calculated the load capacity of geotechnical permissible foundation, taking into account the worst result of SPT combined with the largest project load for your area of influence. Already the permissible structural load of the stakes was provided by a catalog of company of stakes according to the varying cross sections available. Thus, we proceeded to the verification of three models of cross sections and the lifting of the quantitative of stakes per block, according to each model, opting to use the one that most proved to be. Finally, the crown blocks were designed for the proposed foundation type and a cost comparison was made between the models, in order to demonstrate the more financially favorable.