Modelagem numérica de tensoestruturas: um estudo de caso

Abstract

This work proposes the shape design and stress analysis of the roofing in tensile structure for a footpath at the UNIPAMPA Alegrete campus, comparing the shape found numerically by using the finite element method, with the found experimentally by Rafaela Kluge. Initially, it was defined the roofing part to be used in the study and, with the ANSYS® software, the balanced shape of the membrane that most resembles the one found by Kluge. With the shape defined, the prestressing in the structural elements was done, to subsequently apply the wind pressures, considering two transverse and longitudinal directions. Thus, it was possible to check the stresses generated in the membrane and masts and the forces generated on the cable border and suspender cable. From the stresses and forces found, the forces acting on the foundation elements were defined. The results obtained in the principal stresses considering the two wind directions, show values compatible with a membrane structure. Furthermore, the values of the structural efforts are the same order of magnitude without significant changes in the different structures elements.