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Abstract(s)
No intuito de analisar as principais diferenças entre códigos de procedimento de dimensionamento de estruturas em concreto armado, o trabalho apresentará um comparativo entre a norma brasileira NBR 6118/2014 e a norma portuguesa NP EN 1992-1-1:2010 (Eurocódigo 2 Parte 1-1). Para isso será realizado o dimensionamento à flexão de uma laje fungiforme ou laje lisa em betão armado através do método dos pórticos equivalentes e, será estudado o efeito do punçoamento nos pilares. Foi verificado que existe uma grande semelhança entre as duas normas quanto ao dimensionamento à flexão das lajes fungiformes. Porém, no punçoamento observaram diferentes critérios para o cálculo dos esforços atuantes sobre os pilares, sendo este o principal ponto observado. Assim, o Eurocódigo demonstrou-se mais conservador sendo necessário uma maior taxa de aço para garantir a segurança.
In order to study the main differences between the procedure codes for the design of structures in reinforced concrete, the dissertation will present a comparison between the standard NBR 6118/2014 and the Eurocode NP EN 1992-1-1 2010. This way, a design of the flat slabs in reinforced concrete using the equivalent frame analysis will be done and, in addition, the design of the punching in the columns of the project. As results, it was verified that there is a great similarity enters the two standards when it comes about the design of the flat slabs in the flexural reinforcement, however in the punching, it was observed different methods to calculation the operating tensions on the columns, being this the main point observed. Thus, the Eurocode demonstrated to be more conservative, demanding a higher steel rate to guarantee the security of the project.
In order to study the main differences between the procedure codes for the design of structures in reinforced concrete, the dissertation will present a comparison between the standard NBR 6118/2014 and the Eurocode NP EN 1992-1-1 2010. This way, a design of the flat slabs in reinforced concrete using the equivalent frame analysis will be done and, in addition, the design of the punching in the columns of the project. As results, it was verified that there is a great similarity enters the two standards when it comes about the design of the flat slabs in the flexural reinforcement, however in the punching, it was observed different methods to calculation the operating tensions on the columns, being this the main point observed. Thus, the Eurocode demonstrated to be more conservative, demanding a higher steel rate to guarantee the security of the project.
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Keywords
Lajes fungiformes Lajes lisas Punçoamento NBR 6118/2014 NP EN 1992-1-1:2010