Avaliação dos momentos fletores máximos em lajes de garagens com o uso das tabelas de Rüsch e o programa SAP2000

• Autor(a) principal: Peroza, Bruno Gustavo
• Data de Publicação: 2021
• Idioma: por
• Título da fonte: Manancial - Repositório Digital da UFSM
• dARK ID: ark:/26339/001300000wdwm
• Texto Completo: http://repositorio.ufsm.br/handle/1/22859
• topic: Momentos fletores; Lajes; Tabelas de Rüsch; Elementos finitos; Slabs; Rüsch tables; Finite elements; Bending moments; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL

This work contains an analysis of the maximum bending moments in garage slabs subjected to the concentrated and distributed loads from the ABNT NBR 6120 (2019), with the use of the Rüsch tables and the SAP2000 software. This work presents a viability study for the Rüsch tables, which are commonly used for bridge slabs, when they are used for the calculation of the positive and negative maximum bending moments of garage slabs, since the calculation tables for efforts and deflections are very used, mainly by the academic community. For the use of the Rüsch tables in garage slabs, a lot of compatibilizations had to be done, as a result of the differences between the application areas of the vehicles used by Rüsch’s concentrated loads and the application areas of these loads from the ABNT NBR 6120 (2019), generating uneconomical slabs’ geometries. However, the study continued in order to contribute with the analysis of the maximum bending moments in garage slabs through the comparation between the Rüsch’s results and the software SAP2000’s results. Therefore, to compare the Rüsch’s results, which also had a specific calculation to consider the continuity between slabs, numerical modelings were made with the SAP2000 software, using the finite element method, considering slabs supported by beams with total torsional rigidity, slabs supported by beams with 15 % of the total torsional rigidity and slabs with fully rigid supports. It was noticed, then, that the majority of the Rüsch modelings had its results close to the results of the numerical modelings of slabs supported by beams with total torsional rigidity and of slabs with fully rigid supports. Also, the majority of the Rüsch modelings subjected to the concentrated loads had positive bending moments which were different between each other in square slabs. However, due to the uneconomic factor of the slabs’ dimensions, it was concluded that the Rüsch tables are not effective for the calculation of the maximum bending moments in garage slabs.