Abstract:
Over the last twenty years, there has been considerable focus
on the use of fibre-reinforced polymer (FRP) composites as
confinement substances. The hybrid double-skin tubular
column (DSTC) represents an innovative construction approach,
comprising an external fibre-reinforced polymer (FRP) tube,
an inner steel tube, and a concrete infill. These columns are
primarily designed to offer corrosion and seismic resistance,
DSTCs have gained popularity in bridges and offshore
structures applications. This paper aims to provide an unbiased
evaluation of the experimental research efficiency of hybrid FRPconcrete-
steel double-skin tubular columns subjected to axial
compression while exploring various critical parameters, as well
as numerical and analytical studies. The examined parameters
include the buckling behavior of the inner steel tube, the
diameter of the inner steel tube, FRP tube thickness, the
orientation of fibres, failure modes, axial load-strain behavior,
FRP hoop rupture strain, concrete strength and concrete type,
the interaction between steel and FRP tubes, filling the inner
steel tube, stiffened DSTCs, and cross-sectional form. The review
findings emphasize the importance of future research in areas
such as non-circular column members, the use of natural fibres
for the outer FRP tube, and numerical and analytical studies.
These insights are valuable for researchers, practitioners, and
decision-makers involved in designing, constructing, and
retrofitting efficient and resilient structures as hybrid DSTCs