ANÁLISE DO ESTADO LIMITE DE SERVIÇO (ELS) EM TRELIÇAS PLANAS PARA A INSTALAÇÃO DE SISTEMAS FOTOVOLTAICOS EM GALPÕES METÁLICOS

Abstract

The competitiveness of the structures of general purpose warehouses demands solutions that are economical, efficient, durable and quick solutions to the consumer market. In this way, it is necessary to verify according to the recommendations prescribed in the technical standards for the design of steel structures, in order to in order to ensure visual comfort and avoid collapses in the structure. In this context, with the growing demand for photovoltaic system installations, it is necessary that the roofs and the roofs and structures of buildings to be adequately designed and executed to receive the additional load of the solar panels. the additional load of the solar panels. Therefore, the objective of this work was to verify the influence of the photovoltaic system load on the quasi-permanent service combination. For this, three considered three models of trapezoidal plane trusses, where model 1 and 2 were theoretical model 1 and 2 were theoretical structures with a free span of 20 m and model 2 was a structure already executed in Bairro Céu Azul in Rio Verde-GO, with free span of 16.31 m. All the loads that act on the structures were defined, including the structures, including the load of the photovoltaic system, and made the combination of quasi-permanent permanent service actions in two situations: with and without the addition of solar panels. The vertical displacements for each situation were verified by the FTOOL software. Model 1 obtained displacements greater than those recommended by the ABNT NBR 8800: 2008 standard for both situations (with and without solar panels), model 2 and 3 passed the SLS analysis. There was between 14 and 21% increase in the displacement of the structures after the application of the solar panels load. solar panels. It can be concluded from the structural point of view that the truss geometry, the profile area and the span influence the displacement of the structure. In addition, the application of the weight of the structures poorly executed and / or projected, can cause displacements above the allowed or even the allowed or even the collapse of the structure.