Título: | NUMERICAL ANALYSIS OF RAISING EARTH DAMS | ||||||||||||||||||||||||||||||||||||||||
Autor: |
ROBERTH APOLINAR AGUILAR CHUQUIMUNI |
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Colaborador(es): |
CELSO ROMANEL - Orientador |
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Catalogação: | 05/JUL/2006 | 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=8624&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=8624&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.8624 | ||||||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||||||
One of the activities related to dam constructions
involves the raising of the
existent structure, normally done with the objective of
increasing the water
storage capacity of the reservoirs, improving the safety
factor of the embankment
slopes or to ensure a better protection against possible
water flooding. The raising
of an earth dam can be predicted in the original dam plan,
but in mostly situations
consists of a new design, with the dam fully operational,
where the effects of a
new dam height and reservoir level should be assessed with
respect to flow
conditions, stability of the embankment soil slopes and
the response of the revised
structure under static and seismic loads, mainly in highly
seismic regions, as in
the South of Peru where the earth dam of Viña Blanca,
herein studied, was
constructed. In this dissertation, the finite element
method and the limit
equilibrium method were used for the static and dynamic
analyses of these earth
dams, in their original geometry as well after dam raising
with reinforced soil,
compacted soil and concrete or gabion structures, among
other options. From
studies of seismic risk analyses carried out at the dam
sites, the value of maximum
horizontal acceleration equal to 0.4g was chosen to be
used as the peak
acceleration in the Lima (1974) and Moquegua (2001)
acceleration time histories.
The numerical results indicate that all dam raising
options investigated in this
work do not affect the safety conditions of the dams
significantly, either under the
point of view of the hydraulic behavior as well as soil
slope stabilities or the
dynamic response of the earth dams to seismic loads.
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