Título: | A STUDY OF EXTERNAL SHEAR STRENGTHENING OF REINFORCED CONCRETE BEAMS USING CARBON FIBER COMPOSITES | ||||||||||||||||||||||||||||||||
Autor: |
BIANCA SALOMAO CONTARDO SILVINO PEREIRA |
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Colaborador(es): |
MARTA DE SOUZA LIMA VELASCO - Orientador RICARDO AMORIM EINSFELD - Coorientador |
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Catalogação: | 29/AGO/2005 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=6958&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=6958&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.6958 | ||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||
The increasing demand for reinforcement of concrete
structures using
carbon fiber composites was the main motivation of this
work. This study consists
of the comparison of different models that compute the
contribution of the
external reinforcement to the shear capacity of the beams,
and of the
implementation of a numerical procedure for the shear
design of strengthened
beams using the Brazilian code NBR 6118, the generalized
truss model and the
compression field theory. The objectives of this study are
to supply a better
knowledge of the materials used in the strengthening, to
promote a better
understanding of the parameters that act in the interaction
between the concrete
and the composite, and to systematize the design in order
to obtain the carbon
fiber composite cross-section area necessary for the
reinforcement. The analysis
of the shear reinforcement design models for determining
the cross-section area of
the carbon fiber composite was developed comparing the
analytical results with
the experimental results found in literature. The Chen and
Teng model, published
in 2003, for computing the contribution of the external
reinforcement to the shear
capacity of the beams, was used in the computational
implementation due to the
fact that it presented the best performance. Comparing the
analytical results
obtained by the theoretical model with the experimental
results found in literature,
the investigations showed the necessity of further studies
regarding the
implementation of a more appropriate model for the design
of the shear
reinforcement, and for a more precise computation of the
cross-section area of the
carbon fiber composite reinforcement.
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