Análise de estrutura com interação solo-estrutura e as molas de winkler

Abstract

The structure is the set formed by the soil, infrastructure and the superstructure. The soil is the basis of almost all civil works and is a complex environment due to its heterogeneity. The infrastructure is the structure that is in contact with the soil, it is the foundations. And the superstructure is the part that is in direct contact with external actions. These three parts interact with each other, the behavior of one reflects on the other. Knowing this, it is necessary to analyze an interaction between them. The so-called and well-known soilstructure interaction aims to bring the projected structure closer to reality, it does this considering that the components of the structure work together, it shows, for example, that the settlement that takes place in the soil causes a redistribution of efforts in the entire structure. This analysis does not admit that the parts of the structure are dimensioned separately. Your disregard can bring wrong results. Two ways to model a structure considering this interaction is through the Winkler method with identical, independent and equally spaced springs that represent the soil, and through discrete approximation methods which the boundary elements method receives emphasis for modeling in media finite or semi-infinite, for example: the soil. The first method mentioned is practical and widespread nowadays, but it is much more simplified than the second. Some computer programs, such as Ftool, are formulated based on matrix analysis and consider Winkler springs, when necessary.