dc.contributor.advisor |
Gamage JCPH |
|
dc.contributor.author |
Senaratne SAMANI |
|
dc.date.accessioned |
2022 |
|
dc.date.available |
2022 |
|
dc.date.issued |
2022 |
|
dc.identifier.citation |
Senaratne, S.A.M.A.N.I, (2022). Retrofitting of reinforced concrete curved beams failed in shear under out of plane loading using carbon fibre reinforced polymer [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. http://dl.lib.uom.lk/handle/123/20120 |
|
dc.identifier.uri |
http://dl.lib.uom.lk/handle/123/20120 |
|
dc.description.abstract |
Carbon Fibre Reinforced Polymer (CFRP) strengthening techniques have gained
popularity compared to other retrofitting methods due to its superior performance.
While ample research had been done regarding retrofitting of straight beams that
have failed in shear, as per the author’s knowledge no research has been done
regarding the retrofitting of curved beams that have failed in shear under out of
plane loading. Due to the curvature of the beam, bending, shear and torsion all act
together in resisting loads and hence it is important to study the effects of these on
CFRP retrofitted curved beams.
An experimental study consisting of four curved beams of 2m and 4m radii of
curvature, which had previously failed under the combined effect of shear and
torsion for out of plane loading were selected and were externally retrofitted using
CFRP strips. The beams were then re-tested for their new failure loads and the load
carrying capacities were compared with their original values.
From the experimental program it was observed that two beams exhibited load
carrying capacities of 122% and 117% of their original value while the other two
exhibited load carrying capacities of 85% and 90%. The predominant mode of
failure was CFRP strip de-bonding from its substrate. Therefore it was identified
that by anchoring the CFRP strips to the substrate the carrying capacity could be
significantly increased by delaying de-bonding load by distributing stresses across
two of more CFRP strips. |
en_US |
dc.language.iso |
en |
en_US |
dc.subject |
FIBRE REINFORCED POLYMER COMPOSITES |
en_US |
dc.subject |
CARBON FIBRE REINFORCED POLYMER |
en_US |
dc.subject |
BEAM FAILURE |
en_US |
dc.subject |
REINFORCED CONCRETE CURVED BEAMS |
en_US |
dc.subject |
STRUCTURAL ENGINEERING - Dissertation |
en_US |
dc.subject |
CIVIL ENGINEERING – Dissertation |
en_US |
dc.title |
Retrofitting of reinforced concrete curved beams failed in shear under out of plane loading using carbon fibre reinforced polymer |
en_US |
dc.type |
Thesis-Abstract |
en_US |
dc.identifier.faculty |
Engineering |
en_US |
dc.identifier.degree |
MSc in Structural Engineering |
en_US |
dc.identifier.department |
Department of Civil Engineering |
en_US |
dc.date.accept |
2022 |
|
dc.identifier.accno |
TH4778 |
en_US |