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Behaviour of demountable shear connectors in composite structures
Rehman, Naveed
Rehman, Naveed
Publication Date
2017
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The University of Bradford theses are licenced under a Creative Commons Licence.
Peer-Reviewed
Open Access status
Accepted for publication
Institution
University of Bradford
Department
Faculty of Engineering and Informatics
Awarded
2017
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Abstract
The research presented in this thesis is to evaluate the feasibility of
demountable shear connectors as an alternative to welded shear connectors
in composite structures through push off tests and composite beam tests.
Push off tests were conducted to examine the shear strength, stiffness and
ductility of demountable shear connectors in composite structures. The
experimental results showed that demountable shear connectors in
composite structures have very similar shear capacity to welded shear
connectors.
The shear capacity was compared against the prediction methods used for
the welded shear connections given in Eurocode 4 and AISC 360-10 and the
methods used for bolted connections in Eurocode 3 and ACI 318-08. It was
found that the AISC 360-10 and ACI 318-08 methods overestimated the
shear capacity in some cases. The Eurocode method is conservative and
can be utilised to predict the shear capacity of demountable connectors in
composite structures. The experimental studies of two identical composite beams using
demountable shear connectors and welded shear connectors showed very
similar moment capacity. However, the specimen with demountable shear
connectors was more ductile compared to the welded specimen. The experimental study suggests that the methods available in Eurocode 4 and
BS 5950 for predicting moment capacity and mid span deflection can be
adopted for composite beam with demountable shear connectors.
In addition, a finite element analysis of push off test and beam test with
demountable shear connectors was also conducted for parametric studies
and results are used to evaluate the behaviour of composite structures.
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Type
Thesis
Qualification name
PhD