Analysis and design of concrete structures using strut and tie model by FEM : application in foundation blocks, short consoles, wall beams and rigid shoes.

Neste trabalho tem-se como objetivo realizar an?lises el?sticolineares a partir de um programa computacional destinado ? implementa??o num?rica do Modelo de Bielas e Tirantes, utilizando-se uma formula??o baseada no M?todo dos Elementos Finitos (MEF). Com este modelo ? poss?vel analisar o comportamento de elementos estruturais como blocos de funda??o, consolos curtos e sapatas r?gidas e realizar o dimensionamento das armaduras de a?o, representar os valores de tens?es, deforma??es e deslocamentos na regi?o de uma viga representada como o Modelo de Bielas desenvolvido por Montoya et al. [1], al?m de modelar numericamente via MEF uma viga-parede com uma grande abertura, desenvolvida por Schlaich et al. [2]. Com o fim de validar as implementa??es num?ricas, os resultados foram comparados com modelagens num?ricas realizadas com o aux?lio do software ANSYS 17 e com express?es normativas.The present work has as main objective to perform elastic-linear analyzes through a computational program with numerical approach of the strut-and-tie model using a formulation based on the Finite Element Method (FEM). In this model, it is possible to analyze the behavior of structural elements such as foundation blocks, wall beams, short consoles, also represent the values of tensions, deformations and displacements in the region of a beam represented as the Model of cranks developed by MONTOYA et al. [1], besides numerically modeling via FEM a wall beam with a large aperture, developed by SCHLAICH et al. [2]. In order to validate the numerical implementations, the results were compared with numerical modeling performed with the aid of ANSYS software 17 and with normative expressions