Título: | EXPERIMENTAL STUDY ON THE FLEXURAL STRENGTH OF CONCRETE BEAMS PRESTRESSED WITH SYNTHETIC TENDONS | ||||||||||||||||
Autor: |
AELLINGTON FREIRE DE ARAUJO |
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Colaborador(es): |
GIUSEPPE BARBOSA GUIMARAES - Orientador |
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Catalogação: | 06/SET/2001 | 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=1927&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1927&idi=2 [es] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1927&idi=4 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.1927 | ||||||||||||||||
Resumo: | |||||||||||||||||
External prestressing has been used either in new
structures or in the repair and rehabilitation of existing
ones. The use of steel tendons has been the most usual
solution, but synthetic cables have also been used over the
last years. One example of these cables is a parallel-lay
rope known as Parafil, which is made from the high strength
(3700 MPa), high modulus (126000 MPa) and corrosion
resistant fiber commercially known as Kevlar. An
investigation on the behavior of beams prestressed with
external Parafil tendons is conducted with the purpose of
studying the flexural strength of these beams. The main
variables which affect the behavior of the beams are
firstly identified through a parametric analysis using an
existing computational model based on the finite element
method. Secondly, an experimental investigation of five
simple supported beams, in which the non-prestressed
reinforcement and type of loading are the main variables,
is presented. The results show that the non-prestressed
reinforcement, type of loading, elastic modulus of the
tendons, effective prestressing force level and concrete
strength have a significant affect on the flexural strength
of the beams. The comparison between the experimental
results and those obtained from equations developed for
steel tendons, shows that these equations could also be
used for beams prestressed with synthetic cables.
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