Estudo comparativo por análise computacional de fundações constituídas por diferentes elementos metálicos em aço

Abstract

The metallic foundations, of displacement, contribute for a bigger diversification in the civil construction, being essential to get themselves, through the varied geometry of the elements, the load capacity longed for with a bigger practical of execution. With this, the evaluation of foundations consisting of metallic elements becomes important. In this work structural elements consisting by steel profiles had been studied of geometry H and I, tubular profiles of circular section and national railroad tracks. Three developed distinct computational programs had been previously adapted (one for each structural element) to process five methods of calculation static half-empiricists and a method of dynamic calculation, aiming at the sizing of the load capacity of the foundation. They had been used in the given programs of a survey of construction with predominantly sandy soil and modified type of ground in its predominance for argillaceous. Two distinct static loads, 25tf and 75tf had been applied. Thus having resulted enough for the analysis of the behavior of the metallic props. The behaviors of the different metallic elements had been studied (having resistance and varied depths), carrying through a comparison of costs and parallel an analysis of the spiking tensions. The sizing methods had resulted in divergent values of load capacity. It could be determined that the metallic profiles had presented in both situations of types of ground, the lesser global costs forthe execution of the foundation. One also concluded that the deformation of the element of steel, which had to the spiking load excess, can be foreseen and be prevented through the calculation of the tension of spiking in projects of foundations.