Título: | A COMPUTATIONAL TECHNIQUE FOR DEFINITION OF STRUT AND TIE MODELS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Autor: |
ELCIO CASSIMIRO ALVES |
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Colaborador(es): |
LUIZ ELOY VAZ - Orientador MARTA DE SOUZA LIMA VELASCO - Orientador |
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Catalogação: | 28/MAR/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=1404&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1404&idi=2 [es] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1404&idi=4 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.1404 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The present work has the aim of developing a formulation
and a computational system,
which should be used by the structural engineers an
auxiliary tool in the definition of strut and
tie models of bidimensional structures.
In the developed system the user can define initially a
very complex system with a great
number of bars and many different directions.
This initial solution can be based on both the stress
results of a linear elastic finite
element analysis and the experience of the engineer. As the
user may be in doubt about the best
model to be used he may superimpose in the initial model
all the allowable solutions he may
find.
The aim of the system is to choose among all the allowable
solution (these ones wich
satisfy equilibrium and strenght) the more economical one.
As more economical solution is
considered the one which correspond to the least
consumption of reinforcement.
The problem formulation leads to a linear programming
problem (LP) and the LINDO
program [2] is used for solving it.
The visualization of the model and results is also part of
the system. It is based on the
data generated by the LINDO program.
The work is basicaly divided in three parts. In the first
one a revision about strut and tie
models as well as the basic knowledge in linear programming
is presented. In the second part
the problem formulation is shown and the last the results
of the program are compared with
those old the technical literature.
The computational tool presented here may be of great
utility in the definition of strut
and tie models, but it has not by far the intention and the
feeling of the engineers which shall
ever prevail, inclusive in the critic analysis of the
program results.
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