Dimensionamento à punção em apoios internos de lajes protendidas sem aderência
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Data
2015-08-14
Autores
Leite Junior, Jose Carlos Cirino
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Universidade Federal do Espírito Santo
Resumo
This work studies the punching shear in prestressed slabs with unbonded tendons, for internal columns, calculated by ABNT NBR 6118:2007, ABNT NBR 6118:2014, EN 1992-1-1:2004 and ACI 318-11. Punching shear calculations will be presented in order to obtain comparative results analysis. Also, there are three situations presented of non-destructive load tests for punching shear, in real slabs. The cases, calculated using the four compared regulation codes, provide a basis for assessments of the conservatism level among the formulations. After the theoretical analysis, in general, it is concluded that EC2:2004 and NBR 6118:2014 are the codes that generate less conservative results in punching shear calculation. However, ACI 318-11 and the NBR 6118:2007 obtain the most conservative results for this design. Considering the maximum loads without the use of punching shear reinforcement ACI 318 generates values comparable to EC2 and NBR 6118:2014. The most conservative results are always generated by NBR 6118:2007.
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Palavras-chave
prestressed slabs , punching shear , internal columnS , codes , lajes protendidas , punção , normas , pilar interno
Citação
LEITE JUNIOR, Jose Carlos Cirino. Dimensionamento à punção em apoios internos de lajes protendidas sem aderência. 2015. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2015.