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In the majority of recent studies the dynamic behaviour of
significant elements in the system has been overlooked.
Furthermore, current codes are unable to suggest clear and
realistic approaches. Therefore a proven method of analysis needs
to be undertaken to provide better predict the vibration
characteristics in composite steel-concrete beam systems. This
research takes advantage of the finite element package ABAQUS to
describe a study of the dynamic behaviour of isolated and coupled
composite steel- concrete beam systems under free vibration
analysis. This report also includes several chapters describing
theoretical investigations, computer modelling, evaluation of the
results, and recommendations for further study. The first six
isolated beams of different lengths are simulated and analysed, and
then 24 coupled composite beams are simulated and analysed by
considering different length girders at differing distances. The
purpose of this study is to derive a theoretical and analytical
analysis to predict realistic concepts, and present an active mode
in composite steel-concrete beam systems instead of the combined
modes.
Many older structures were designed for static loads but more
recently there has been a growing awareness that some must be
designed to resist both dynamic impact and static loads. An
accidental impact load can be caused by mishaps in industry as well
as accidents stemming from transportation or man-made disasters.
Structural components can be subjected to a range of deliberate
impact loads such as military activity or terrorist attacks. A
large proportion of the surfaces of concrete structures are covered
by reinforced concrete slabs. Slabs are often slender elements,
which means they are vulnerable to flexural, shear, or a
combination of both modes of failure when subjected to impact
loading. There are a number of ways of predicting how an impact
load will affect a concrete slab, some of which may be impractical
or expensive but because there have been significant developments
in technology, numerical techniques rather than experimental
approaches have become popular methods for developing detailed
responses.
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