Navegando por Autor "Santana, Vitor Carneiro de"

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Análise estrutural de placas retangulares submetidas a carregamentos estáticos trapezoidais
(2019-07-12) Santana, Vitor Carneiro de; Melo, Weslley Imperiano Gomes de; http://lattes.cnpq.br/4789771132461158; http://lattes.cnpq.br/6721685438361084
One of the fundamental steps in structural design is the internal force analysis and initial displacements of a given element when it is subject to an external loading. In the case of surface structural elements, this analysis becomes more complex due to the two-dimensional effect on bending forces, requiring the use of methods that describe the structure behavior in a simplified manner. One of the methods commonly used in plates is the static plate analysis according to Kirchoff's theory for thin plates, where, by solving the differential plate equation (also called the Sophie-Germain-Lagrange equation), tables are generated for the calculations of internal forces and deflections. One of the crucial parameters of differential stress and transverse displacement equations is the Poisson's ratio, which is commonly set at a value of 0.20 for concrete slabs. This study presents an analysis of the influence of Poisson’s ratio variation on internal forces and deflection of simply supported plates, subjected to linearly distributed loads (trapezoidal shape). For this, from the resolution of the Sophie-Germain-Lagrange differential equation by the Navier method, calculation tables were generated for constant and triangular loads, with the Poisson’s ratio ranging from 0.00 to 0.40. These tables were validated by comparative analysis of the results with established bibliographies and the ANSYS Student 2019 R1 software, obtaining percentage differences of up to 3.19% and 7.12% for constant and triangular loading, respectively. From the results, it was verified that the increase in Poisson’s ratio values resulted in larger bending moments and in the reduction of torsional moments and shear forces.
Gestão de resíduos de construção e demolição aplicada no município do Recife
(2017-08-08) Santana, Vitor Carneiro de; Galvão, Simone Perruci; http://lattes.cnpq.br/1523292800241605; http://lattes.cnpq.br/6721685438361084
Civil construction is one of the sectors with the largest participation in the Brazilian economy. However, the high dynamism of this activity leads to an increase in the generation of construction and demolition waste (RCD), promoting greater environmental impacts if managed improperly. For this reason, it becomes relevant to know the main measures adopted by civil construction companies and by the municipal bodies competent for the prevention and final destination of these wastes. This study presents an exposition of the main management policies of construction and demolition waste adopted by the public management of the city of Recife and in five works located in the municipality. In order to do this, we carried out on-site visits to buildings and to the Urban Maintenance and Cleaning Company (EMLURB), in order to obtain data pertinent to the research. The data were collected through interviews, using an electronic questionnaire associated to the virtual platform Google Forms as an instrument. The information acquired was verified according to the guidelines of CONAMA Resolution Nº 307/2002. Thus, it was verified the existence of municipal legislations on the adequate destination of RCD that assign responsibilities to the companies and the municipal organs of urban cleaning. Regarding waste management, it was verified that the type of disposal most adopted among the companies of this study was the collection and final disposal of private landfills, while one of the companies adopts the waste recycling service for reuse in the work.