Título: | STUDY OF THE APPLICABILITY OF THE AASHTO SIMPLIFIED METHOD FOR TRANSVERSAL LOAD DISTRIBUTION FOR BRIDGES IN BRAZIL | |||||||
Autor: |
MURILO SOARES SANTOS |
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Colaborador(es): |
ELISA DOMINGUEZ SOTELINO - Orientador JULIO JERONIMO HOLTZ SILVA FILHO - Coorientador |
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Catalogação: | 26/JUL/2016 | 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=27017&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=27017&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.27017 | |||||||
Resumo: | ||||||||
The dissemination of softwares that implement the Finite Element Method
(FEM) influences the way the structural projects are made. For bridge projects,
where the simplified methods have been for many years the main type of analysis,
the FEM has become an important tool in the process. Currently the simplified
methods complement the use of FEM in different ways, in the pre-dimensioning
of the structural elements and providing an estimate of the shear and bending
moments, reducing the possibility of errors during the design process. In the United
States, AASHTO LRFD (2012) provides a simplified method for transverse
wheel load distribution into their regulatory specifications that requires only the
calculation of a load distribution factor. The objective of this work is to evaluate if
this method can be used as a rational alternative for the design of bridges in Brazil.
For this purpose, it was necessary to understand the difference between Brazilian
and American standards, suggest a calculation model based on the American
standard that meets Brazilian regulation and validate this model with FEM analysis
and other simplified methods. The finite element models were validated by the
comparison of the results of its analysis with the results of actual load tests on
bridges performed by other authors. Safe results are obtained for all analyzed cases
when using the proposed calculation model, therefore it was able to determine
the transverse wheel load distribution and the maximum displacement of the
stringers of bridges with only one span and concrete beams. In bridges with steel
beams, the method also obtained safe results in the analysis of transverse wheel
load distribution, but just as the others simplified methods, it is not able to determine
the maximum displacements with high reliability. It follows, therefore, that
the proposed methodology can be used in the design of bridges with one span in
Brazil, if the applicability limits are specified.
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