[pt] Este trabalho tem por objetivo estudar o comportamento de
lajes de concreto com fôrma permanente de bambu - LCFP -
simplesmente apoiadas e submetidas à flexão. Estas lajes
têm um vão de 350cm, alturas entre 11cm a 13cm e larguras
de 60cm a 71cm que dependem do diâmetro dos bambus
utilizados. Foram consideradas duas espécies de bambu
disponíveis, Dendrocalamus giganteus e Guadua
angustifolhia. Nas - LCFP - os conectores tem uma função
importante. Neste estudo utilizaram-se dois tipos de
conectores os quais consideram meio e diafragma inteiro
do colmo de bambu. Com o objetivo de impermeabilizar o
bambu e aumentar aderência entre os materiais foi
utilizado o produto SIKADUR-32 GEL.Para estabelecer a
eficiência dos conectores e do tratamento, realizaram-se
ensaios PUSH-OUT. Com os resultados, estes foram
caracterizados como flexíveis. Os ensaios de flexão foram
levados a cabo até as cargas de colapso. Pela
instrumentação das três lajes foram registrados e
analisados os diagramas dos principais parâmetros. Os
resultados foram comparados com os obtidos teoricamente.
Nas análises foram estudadas as cargas criticas e as de
serviço com base em critérios e metodologias
recomendadas. Finalmente algumas variáveis são
determinadas para estudos futuros. / [en] The main objective of this thesis is to study the behavior
of bamboo permanent shutter concrete slab BPSCS subjected
to four points bending test. The boundary conditions of the
slabs are simply supported and have 350cm free spans, with
the height between 11cm to 13cm and the widths of 60cm to
71cm respectively depending on the diameter of bamboo used.
Two most commonly available bamboo species Dendrocalamus
giganteus and Guadua angustifolhia are considered. In the
BPSCS the connectors have an important function. In this
study two types of connectors considering half and the
entire diaphragm of the whole bamboo culm was used. To
improve bonding between bamboo and concrete in addition to
create an impermeable surface of the bamboo SIKADUR-32 GEL
was applied.To establish the efficiency of the connectors
and the considered treatment PUSH-OUT tests were carried
out. The test results proved that both types of the
connectors are flexible. The tests were carried out up to
the failure loads. Through the instrumentation of the three
tested slabs the load deflections, stress- strain curves of
the slabs at different points were registered and analyzed.
The results in turn were compared with those obtained
theoretically. In the analyses both resistance and
serviceability criteria were studied. Based on the findings
preliminary design methods are recommended. Finally the
variables to be studied in future are given.
| Identifer | oai:union.ndltd.org:puc-rio.br/oai:MAXWELL.puc-rio.br:2794 |
| Date | 31 July 2002 |
| Creators | EDUARDO HUMBERTO ACHA NAVARRO |
| Contributors | KHOSROW GHAVAMI |
| Publisher | MAXWELL |
| Source Sets | PUC Rio |
| Language | Portuguese |
| Detected Language | English |
| Type | TEXTO |
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