Título: | STRESS - STRAIN BEHAVIOR OF A GNEISS RESIDUAL SOIL USING THE CUBIC TRIAXIAL CELL | ||||||||||||
Autor: |
MARCONI SOARES ALEIXO |
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Colaborador(es): |
ALBERTO DE SAMPAIO FERRAZ JARDIM SAYAO - Orientador |
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Catalogação: | 23/ABR/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=1526&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1526&idi=2 [es] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1526&idi=4 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.1526 | ||||||||||||
Resumo: | |||||||||||||
The knowledge of the mechanical behaviour of residual soils
is of great importance in
geotechnical projects, because of its abundance in tropical
regions, such as Brazil and
particularly in the area of Rio de Janeiro. The present
work presents a study on the
fundamental stress-strain behaviour of a residual soil
resulting from a profile of a gneiss rock
in Rio de Janeiro. As the gneiss residual soils preservethe
bedding planes from the parent
rock, the relevance of considering anisotropy in the stress-
strain characteristics of these soils
was investigated.
The cubic triaxial equipment developed at PUC-Rio was used
in this research. This
equipment allows the independent control of the three
principal stresses, allowing the
reprodution of three-dimensional stress paths, usually
associated with geotechnical works in
the field.
The experimental program consisted of axial and hidrostatic
tests, under drained
loading conditions, using the cubic triaxial equipment. One-
dimensional oedometer tests were
also performed, in order to obtain the compressibility
characteristics of the residual soil.
Undisturbed specimens were prepared with the bedding planes
parallel or perpendicular to the
loading direction.
Analysis of the test results showed the effects of load
direction, confining stress level,
weathering degree, structural soil fabric and saturation
degree. It may be concluded that the
gneiss residual soils which were selected for this research
do not present significant effects of
anisotropy in the strength characteristics. In the stress-
strain characteristics, however, it may
be concluded that the young residual soil showed effects of
anisotropy.
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