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Ambiente Construído

versão impressa ISSN 1415-8876versão On-line ISSN 1678-8621

Resumo

CUNHA, Jesiel; CHAVES, Luciano Pereira; SANTOS, Leila Maria Soares dos  e  LOPES, Zigue Marley Furtado. Optimal distribution of carbon-fiber reinforcement in concrete slabs. Ambient. constr. [online]. 2015, vol.15, n.2, pp.153-167. ISSN 1415-8876.  http://dx.doi.org/10.1590/s1678-86212015000200019.

This study proposes a topology optimization procedure as a tool to find the region of application of carbon-fiber reinforcement in concrete slabs. Although the procedure is applied to slabs, the technique can be used for the reinforcement of any concrete structure. Numerical simulations were performed using the Finite Element Method in combination with an automated topology optimization procedure in order to indicate the optimal region for the placement of the reinforcement. The influence of some aspects of the structural behavior of the slab on the optimization results is presented: concrete cracking, load and support conditions and reinforcement rates. Gains were found in the stiffness and strength of the reinforced structures. A comparison with conventional reinforcement techniques demonstrates that topology optimization can be a useful tool for determining the region of reinforcement, allowing material cost savings.

Palavras-chave : Structural strengthening; Topology optimization; Carbon fibers; Composite materials; Concrete sla.

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